A lifting and swinging page structure

Abstract

A lifting swing page structure, comprising a panel, a swing page structure and a lifting housing. Lifting grooves are formed at the left and right ends of the lifting housing, a driving rod is arranged in the lifting grooves, and guide columns are vertically arranged at the left and right ends of the front and rear walls of the lifting housing; The swing page structure is arranged in the lifting housing and comprises a swing page and a swing page bracket. The swing page is arranged in the swing page bracket. Driving columns are arranged on the left and right side walls of the swing page bracket corresponding to the lifting grooves, and the driving columns are driven to move up and down by the driving rod; The swing page includes a first swing page connecting rod, a second swing page connecting rod, a first swing page and a second swing page. A plurality of first swing pages are arranged at intervals on the first connecting rod. The second swing page connecting rod is a round groove-shaped connecting rod with an open upper end, and a plurality of second swing pages are arranged at intervals on the second connecting rod; The lower part of the swing page is cylindrical, and a triangular prism-shaped upper part of the swing page extends upward from the top end of the lower part of the swing page; The first swing page connecting rod is embedded in the second swing page connecting rod to form a swing page connecting rod; The swing page connecting rod passes through the swing page bracket and is connected to the swing page motor; An air inlet for the swing page is formed at the upper end of the swing page bracket.

Description

Technical Field

[0001] The present invention relates to an electrical appliance structure, in particular to a lifting and swinging blade structure. Background Art

[0002] With the development of society, people's living standards are getting higher and higher. Air conditioning devices have become an essential product in daily life. In order to make the air outlet of the air conditioning device more comfortable, a swinging blade structure is usually provided in the air outlet. However, the swinging blade structures on the market currently can only meet the up-and-down swinging or left-and-right swinging, and adjust the air flow rate by adjusting the fan speed. When the user changes the air flow rate, the fan must change the output power, resulting in frequent changes and reducing the service life of the fan.

[0003] At the same time, in order to make the air outlet of the air conditioning device more comfortable, a swinging blade structure is usually provided in the air inlet. The commonly used swinging blade structures can usually only achieve the change of the air direction, but the air guiding effect of the air outlet is not ideal, usually causing a certain obstruction to the air flow, resulting in problems such as air flow backflow.

[0004] The Coanda Effect, also known as the wall attachment effect or the Coandă effect, is the tendency of a fluid (water flow or air flow) to change from a direction deviating from its original flow direction to flow along the surface of a convex object. When there is surface friction (which can also be said to be fluid viscosity) between the fluid and the surface of the object it flows over, as long as the curvature is not large, the fluid will flow along the surface of the object. According to Newton's third law, when an object exerts a deflecting force on the fluid, the fluid must also exert a reverse deflecting force on the object. This force is very obvious on light objects. Therefore, how to combine the air outlet structure with the Coanda effect to control the air outlet direction has become the research direction of each manufacturer.

[0005] Therefore, how to combine the Coanda effect and achieve the air flow rate by modifying the swinging blade structure is an urgent problem to be solved by the products on the market. Summary of the Invention

[0006] To solve the above problems, the present invention provides the following solutions:

[0007] A lifting and swinging page structure, comprising a panel, a swinging page structure and a lifting housing. Lifting grooves are formed at the left and right ends of the lifting housing. A driving rod is arranged in the lifting groove. The lower end of the driving rod is rotatably connected to the side wall of the lifting housing and is connected to a driving motor. The upper end of the driving rod is provided with a waist-shaped hole and is located in the lifting groove. Guide columns are vertically arranged at the left and right ends of the front and rear walls of the lifting housing. The swinging page structure includes a swinging page and a swinging page bracket. The swinging page is arranged in the swinging page bracket. Driving columns are correspondingly arranged on the left and right side walls of the swinging page bracket for the lifting grooves. The driving columns pass through the waist-shaped holes of the driving rod. Guide sleeves are correspondingly arranged on the swinging page bracket for the guide columns. The swinging page bracket is arranged in the lifting housing. The guide sleeve is sleeved outside the guide column. The driving motor drives the driving column to move up and down so that the swinging page bracket moves up and down along the guide column. The swinging page structure is arranged in the lifting housing and then embedded in the air outlet of the panel.

[0008] The swinging page structure is arranged in the lifting housing and includes a first swinging page connecting rod, a second swinging page connecting rod, a first swinging page and a second swinging page. A plurality of first swinging pages are arranged at intervals on the first connecting rod. The second swinging page connecting rod is a round groove-shaped connecting rod with an open upper end. A plurality of second swinging pages are arranged at intervals on the second connecting rod. The lower part of the swinging page is cylindrical, and a triangular prism-shaped upper part of the swinging page extends upward from the top end of the lower part of the swinging page. The first swinging page connecting rod is embedded in the second swinging page connecting rod to form a swinging page connecting rod. The first swinging page and the second swinging page are alternately sleeved outside the swinging page connecting rod. Mounting brackets are arranged at the left and right ends of the swinging page bracket. Connecting rod through holes are formed in the mounting brackets. The swinging page connecting rod passes through the connecting rod through holes and is connected to a swinging page motor. The swinging page motor includes a first swinging page motor and a second swinging page motor. The first swinging page motor is connected to the first swinging page connecting rod, and the second swinging page is connected to the second swinging page connecting rod. An air inlet for the swinging page is formed at the upper end of the swinging page bracket.

[0009] Further, the lifting groove includes an upper cover and a lower cover. An air inlet for the lifting structure is formed on the top surface of the upper cover. Upper cover lifting grooves are formed at the left and right ends of the upper cover. The driving rod is arranged at one end of the upper cover lifting groove. The upper end of the driving rod is provided with a waist-shaped hole. The lower cover is correspondingly provided with a lower cover lifting groove for the upper cover lifting groove. An air outlet for the lifting structure is formed on the bottom surface of the lower cover. A limiting ring with the same inner diameter as the guide column is arranged in the guide sleeve. A spring is sleeved outside the guide column. The upper end of the spring abuts against the limiting ring, and the lower end of the spring abuts against the bottom surface of the clamping groove.

[0010] Further, fixing columns are arranged on the side wall at one end of the upper cover lifting groove corresponding to the fixing holes on the motor housing. The fixing columns and the fixing holes are screwed with screws to fix the motor.

[0011] Further, guide sleeve connecting columns are arranged on the front and rear walls of the swinging page bracket. The guide sleeve and the guide sleeve connecting columns are fixedly connected by screws. The top end of the guide column passes through the guide sleeve and is screwed with a limiting screw. When the guide sleeve reaches the highest position, the top surface of the guide sleeve abuts against the nut of the limiting screw.

[0012] Further, the panel air outlet is provided with an upper cover connection column corresponding to the side wall of the upper cover and a lower cover connection column corresponding to the side wall of the lower cover. After the upper cover is buckled to the lower cover, the lower end of the side wall of the upper cover is fixed to the upper cover connection column by screws, and the lower end of the side wall of the lower cover is fixed to the lower cover connection column by screws.

[0013] Further, the first swing leaf and the second swing leaf are formed by the mutual buckling of a swing leaf front housing and a swing leaf rear housing with the same structure; a plurality of first fixing surfaces are arranged at intervals at the upper end of the first swing leaf connecting rod; a plurality of second fixing surfaces are arranged at intervals at the bottom of the second swing leaf connecting rod, and the first fixing surfaces and the second fixing surfaces are arranged in an alternating manner; the upper inner end of the lower part of the first swing leaf is fixed to the first fixing surface by screws, and the lower inner end of the lower part of the second swing leaf is fixed to the second fixing surface by screws.

[0014] Further, a first connection column is arranged on the right end face of the lower part of the first swing leaf at the right end of the first swing leaf connecting rod, and the output end of the first swing leaf motor is fixedly connected to the first connection column; a second connection column is arranged on the left end face of the lower part of the second swing leaf at the left end of the second swing leaf connecting rod, and the output end of the second swing leaf motor is fixedly connected to the second connection column.

[0015] Further, a first fixing hole is formed in the first fixing surface, and a first fixing column is arranged corresponding to the first fixing hole at the upper inner end of the lower part of the first swing leaf. The first fixing column and the first fixing hole are fixed by screws; a second fixing hole is formed in the second fixing surface, and a second fixing column is arranged corresponding to the second fixing hole at the lower inner end of the lower part of the second swing leaf. The second fixing column and the second fixing hole are fixed by screws.

[0016] Further, limit surfaces extend downward at the front and rear ends of the swing leaf bracket, and the upper parts of the first swing leaf and the second swing leaf abut against the limit surfaces when rotated to the maximum angle.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The slow and urgent of the air outlet can be effectively controlled through the lifting swing leaf structure;

[0019] 2. The swing leaf lifting function is realized through the cooperation of the motor, the driving rod, the driven rod and the driving column;

[0020] 3. The lifting direction of the swing leaf structure is restricted through the cooperation of the guide post and the guide sleeve, and a spring is also arranged in the guide post and the guide sleeve to increase the smoothness of the swing leaf lifting process.

[0021] 4. The swing leaf is designed in a water droplet-like shape combined with a cylinder and a triangular prism, and the Coanda effect is utilized to effectively guide the air flow for the air outlet, so as to facilitate the control of the air outlet direction;

[0022] 5. The first swing leaf and the second swing leaf are respectively controlled to rotate by the first swing leaf motor and the second swing leaf motor, and the diversion direction is controlled through various swing leaf rotation forms. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the present invention;

[0024] Figure 2 is a side view of the upper cover;

[0025] Figure 3 is a schematic structural diagram of the connection between the lower cover and the panel;

[0026] Figure 4 is a schematic structural diagram of the present invention;

[0027] Figure 5 is a perspective view of the present invention;

[0028] Figure 6 is a schematic diagram of an air outlet mode;

[0029] Figure 7 is a schematic diagram of another air outlet mode.

[0030] In the figure: 1. Upper cover; 2. Swing leaf bracket; 3. Lower cover; 4. Panel; 5. Lift structure air outlet; 6. Upper cover lift slot; 7. Motor; 8. Fixed column; 9. Driving column; 10. Guide sleeve; 11. Fixed surface; 12. Lower cover lift slot; 13. Guide post; 14. Driving rod; 15. Oval hole; 16. Driven rod; 17. Spring; 18. Lower end face of the guide post; 19. Lower cover connection column; 20. Upper cover connection column; 21. Swing leaf frame; 22. Installation bracket; 23. First swing leaf connecting rod; 24. Second swing leaf connecting rod; 25. First fixed surface; 26. Lower part of the first swing leaf; 27. Upper part of the first swing leaf; 28. First fixed column; 29. First connecting column; 30. First swing leaf motor; 31. Second fixed surface; 32. Lower part of the second swing leaf; 33. Upper part of the second swing leaf; 34. Second fixed column; 35. Second connecting column; 36. First swing leaf; 37. Second swing leaf; 38. Second swing leaf motor. Detailed implementation manners

[0031] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0032] Embodiment 1: As Figures 1 - 6 shown,

[0033] A lifting swing page structure, comprising a panel 4, a swing page structure and a lifting housing. The lifting housing includes an upper cover 3 and a lower cover 1. An air outlet of the lifting structure is provided on the top surface of the upper cover 1. Upper cover lifting grooves 6 are provided at the left and right ends of the upper cover 1. A driving rod 14 is provided at one end of the upper cover lifting groove 6. A waist-shaped hole 15 is provided at the upper end of the driving rod 14. The lower end of the driving rod 14 is rotatably connected to the side wall of the upper cover lifting groove 6 and is driven to rotate by a motor 7. The upper end of the driving rod 14 is located within the upper cover lifting groove 6. The lower cover 3 is provided with a lower cover lifting groove 12 corresponding to the upper cover lifting groove 6, and an air inlet of the lifting structure is provided on the bottom surface of the lower cover 3. The lower cover 3 is embedded within the upper cover 1, and the upper cover lifting groove 6 and the lower cover lifting groove 12 coincide to form a lifting groove. Guide columns 13 are vertically provided at the left and right ends of the front and rear walls of the lower cover 3. The swing page structure includes a swing page and a swing page bracket 2. The swing page is arranged within the swing page bracket 2. Driving columns 9 are provided on the left and right side walls of the swing page bracket 2 corresponding to the lifting groove. The driving columns 9 pass through the waist-shaped holes 15 of the driving rod 14. Guide sleeves 10 are provided on the swing page bracket 2 corresponding to the guide columns 13. The swing page bracket 2 is embedded within the lower cover 3. The guide sleeves 10 are sleeved outside the guide columns 13, and the motor 7 drives the driving columns 9 to move up and down, causing the swing page bracket 2 to move up and down along the guide columns 13. After the swing page structure is arranged within the lifting housing, it is embedded within the air outlet of the panel 4.

[0034] A limiting ring having the same inner diameter as the guide column 13 is provided within the guide sleeve 10. A spring 17 is sleeved outside the guide column 10. The upper end of the spring 17 abuts against the limiting ring, and the lower end of the spring 17 abuts against the lower end surface 18 of the guide column. A fixing column 8 is provided on the side wall at one end of the upper cover lifting groove 6 corresponding to the fixing hole on the motor 7 housing. The fixing column 8 and the fixing hole are screwed with screws to fix the motor 7. Lower cover connection columns 19 and upper cover connection columns 20 are provided on the edge of the air outlet of the panel 4 corresponding to the side walls of the upper cover and the lower cover. The bottom end of the side wall of the upper cover is fixed to the upper cover connection column 20 by screws, and the bottom end of the side wall of the lower cover is fixed to the lower cover connection column 19 by screws.

[0035] Guide sleeve connection columns 16 are provided on the front and rear walls of the swing page bracket 2. The guide sleeve 10 and the guide sleeve connection columns 16 are fixedly connected by screws. The top end of the guide column 13 passes through the guide sleeve 10 and is screwed with a limit screw. When the guide sleeve 10 reaches the highest position, the top surface of the guide sleeve 10 abuts against the nut of the limit screw. After the upper cover 1 is buckled with the lower cover 3, the bottom end of the side wall of the upper cover 1 is fixed to the panel 4 by screws.

[0036] The page swinging structure includes a page swinging bracket 21 and a page swinging assembly. The page swinging assembly includes a first page swinging link 23, a second page swinging link 24, a first page 36 and a second page 37. A plurality of first fixing surfaces 25 are arranged at intervals at the upper end of the first page swinging link 23; the second page swinging link 24 is a circular groove-shaped link with an open upper end. A plurality of second fixing surfaces 31 are arranged at intervals at the bottom of the second page swinging link 24, and the first fixing surfaces 25 and the second fixing surfaces 31 are arranged alternately; the first page 36 and the second page 37 are formed by buckling a page front housing and a page rear housing with the same structure. The lower part of the page is cylindrical, and a triangular prism-shaped upper part of the page extends upward from the top end of the lower part of the page; the first page swinging link 23 is embedded in the second page swinging link 24 to form a page swinging link. The first page 36 and the second page 37 are alternately sleeved outside the page swinging link. The upper end inside the lower part 26 of the first page is fixed to the first fixing surface 25 by screws, and the lower end inside the lower part 32 of the second page is fixed to the second fixing surface 31 by screws; mounting brackets 22 are arranged at the left and right ends of the page swinging bracket 21. The mounting brackets 22 are provided with link through holes, and the page swinging link passes through the link through holes and is connected to a page swinging motor; the page swinging motor includes a first page swinging motor 30 and a second page swinging motor 38. The first page swinging motor 30 is connected to the first page swinging link 23, and the second page swinging motor 38 is connected to the second page swinging link 24; an air inlet for page swinging is provided at the upper end of the page swinging bracket 21.

[0037] A first connecting column 29 is provided on the right end face of the lower part of the first page 36 located at the right end of the first page swinging link 23, and the output end of the first page swinging motor 30 is fixedly connected to the first connecting column 29; a second connecting column 35 is provided on the left end face of the lower part 32 of the second page located at the left end of the second page swinging link 24, and the output end of the second page swinging motor 38 is fixedly connected to the second connecting column 35.

[0038] The first fixing surface 25 is provided with a first fixing hole, and a first fixing column 28 is provided at the upper end inside the lower part 26 of the first page corresponding to the first fixing hole. The first fixing column 28 and the first fixing hole are fixed by screws; the second fixing surface 31 is provided with a second fixing hole, and a second fixing column 34 is provided at the lower end inside the lower part 32 of the second page corresponding to the second fixing hole. The second fixing column 34 and the second fixing hole are fixed by screws.

[0039] Limit surfaces extend downward at the front and rear ends of the page swinging bracket 21. When the upper parts 27 of the first page and 23 of the second page rotate to the maximum angle, they abut against the limit surfaces.

[0040] The working principle is as follows: start the driving motor, the motor 7 drives the driving rod 14 to rotate clockwise, drives the driving column 9 to move upward, and the driven rod 16 follows the driving column 9 to move upward at the same time, and the driving column 9 then drives the swing leaf structure to move upward along the guide column 13 until it reaches the maximum swing leaf movement distance, at which time the distance between the swing leaf and the air outlet of the panel 4 is the largest, so that the air outlet is smooth. On the contrary, the motor 7 reverses, the motor 7 drives the driving rod 14 to rotate counterclockwise, drives the driving column 9 to move downward, and the driven rod 16 follows the driving column 9 to move downward at the same time, and the driving column 9 then drives the swing leaf structure to move downward along the guide column 13 until it reaches the minimum swing leaf movement distance, at which time the distance between the swing leaf and the air outlet of the panel 4 is the smallest, so that the air outlet is rapid. In the process of the swing leaf structure moving up and down, the spring 17 arranged on the outer surface of the guide column 13 is balanced to ensure that the swing leaf structure is lifted and lowered smoothly.

[0041] The first swing leaf 36 and the second swing leaf 37 are sleeved outside the swing leaf connecting rod, the first swing leaf 36 is fixed to the first swing leaf connecting rod 23 through the first fixed surface 25, and the second swing leaf 37 is fixed to the second swing leaf connecting rod 24 through the second fixed surface 31. The first swing leaf motor 30 controls the first swing leaf 36 to rotate around the first swing leaf connecting rod 23, and the second swing leaf motor 38 controls the second swing leaf 37 to rotate around the second swing leaf connecting rod 24. The first swing leaf 36 and the second swing leaf 37 can rotate synchronously in the same direction. By using the Coanda effect, when the first swing leaf 36 and the second swing leaf 37 rotate to the vertical direction, the air outlet direction is vertical air outlet along the air inlet (such as Figure 7 When the first swing leaf 36 and the second swing leaf 37 are turned to one side of the air inlet, the air outlet direction is the other side of the air inlet (as shown); Figure 6 When the first swing leaf 36 and the second swing leaf 37 swing crosswise, the air outlet direction is cross air outlet.

[0042] The outer swing leaf 3 of the present invention swings forward and backward to achieve the forward and backward change of the wind direction angle, and the inner swing leaf 4 swings left and right to achieve the left and right change of the wind direction angle. The combination of the two can achieve the multi-directional change of the wind direction angle.

[0043] Finally, it should be noted that the above examples are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above examples, and many variations are possible. All variations that can be directly derived or associated with the content disclosed by a person skilled in the art should be considered as the protection scope of the present invention.

Claims

1. A lifting and swinging page structure, characterized in that: It includes a panel, a swing leaf structure and a lifting housing. Lifting grooves are provided at the left and right ends of the lifting housing. The lifting grooves include an upper cover and a lower cover. An air inlet for the lifting structure is provided on the top surface of the upper cover, and upper cover lifting grooves are provided at the left and right ends of the upper cover. A driving rod is provided at one end of the upper cover lifting groove, and a waist-shaped hole is provided at the upper end of the driving rod; the lower cover is provided with a lower cover lifting groove corresponding to the upper cover lifting groove, and an air outlet for the lifting structure is provided on the bottom surface of the lower cover; a driving rod is arranged in the lifting groove, the lower end of the driving rod is rotatably connected to the side wall of the lifting housing and connected to a driving motor, and a waist-shaped hole is provided at the upper end of the driving rod and is located in the lifting groove; guide columns are vertically arranged at the left and right ends of the front and rear walls of the lifting housing; the swing leaf structure includes a swing leaf and a swing leaf bracket. The swing leaf is arranged in the swing leaf bracket. Driving columns are provided on the left and right side walls of the swing leaf bracket corresponding to the lifting grooves, and the driving columns pass through the waist-shaped holes of the driving rod; guide sleeves are provided on the swing leaf bracket corresponding to the guide columns. The swing leaf bracket is arranged in the lifting housing, and the guide sleeve is sleeved outside the guide column, and the driving motor drives the driving column to move up and down so that the swing leaf bracket moves up and down along the guide column; a limiting ring with the same inner diameter as the guide column is arranged in the guide sleeve, a spring is sleeved outside the guide column, the upper end of the spring abuts against the limiting ring, and the lower end of the spring abuts against the bottom surface of the clamping groove; the swing leaf structure is arranged in the lifting housing and then embedded in the air outlet of the panel; The swing leaf structure is arranged in the lifting housing and includes a first swing leaf connecting rod, a second swing leaf connecting rod, a first swing leaf and a second swing leaf. A plurality of first swing leaves are arranged at intervals on the first swing leaf connecting rod. The second swing leaf connecting rod is a circular groove-shaped connecting rod with an open upper end, and a plurality of second swing leaves are arranged at intervals on the second connecting rod; the lower part of the swing leaf is cylindrical, and a triangular prism-shaped upper part of the swing leaf extends upward from the top end of the lower part of the swing leaf; the first swing leaf connecting rod is embedded in the second swing leaf connecting rod to form a swing leaf connecting rod, and the first swing leaf and the second swing leaf are alternately sleeved outside the swing leaf connecting rod; mounting brackets are arranged at the left and right ends of the swing leaf bracket, a connecting rod through hole is provided in the mounting bracket, and the swing leaf connecting rod passes through the connecting rod through hole and is connected to a swing leaf motor; the swing leaf motor includes a first swing leaf motor and a second swing leaf motor. The first swing leaf motor is connected to the first swing leaf connecting rod, and the second swing leaf is connected to the second swing leaf connecting rod; a swing leaf air inlet is provided at the upper end of the swing leaf bracket. The first swing leaf and the second swing leaf are formed by buckling a swing leaf front housing and a swing leaf rear housing with the same structure; a plurality of first fixing surfaces are arranged at intervals at the upper end of the first swing leaf connecting rod; a plurality of second fixing surfaces are arranged at intervals at the bottom of the second swing leaf connecting rod, and the first fixing surfaces and the second fixing surfaces are arranged alternately; the upper inner end of the lower part of the first swing leaf is fixed to the first fixing surface by screws, and the lower inner end of the lower part of the second swing leaf is fixed to the second fixing surface by screws.

2. The lifting and swinging page structure according to claim 1, characterized in that: A fixing column is provided on the side wall at one end of the upper cover lifting groove corresponding to the fixing hole on the motor housing, and the fixing column and the fixing hole are screwed with screws to fix the motor.

3. The lifting and swinging page structure according to claim 1, wherein: Guide sleeve connecting columns are provided on the front and rear walls of the swing leaf bracket. The guide sleeve and the guide sleeve connecting column are fixedly connected by screws; the top end of the guide column passes through the guide sleeve and is screwed with a limit screw. When the guide sleeve reaches the highest position, the top surface of the guide sleeve abuts against the nut of the limit screw.

4. The lifting and swinging page structure according to claim 1, characterized in that: The panel air outlet is provided with an upper cover connecting column corresponding to the side wall of the upper cover and a lower cover connecting column corresponding to the side wall of the lower cover. After the upper cover is buckled on the lower cover, the lower end of the side wall of the upper cover is fixed to the upper cover connecting column by screws, and the lower end of the side wall of the lower cover is fixed to the lower cover connecting column by screws.

5. The lifting and swinging page structure according to claim 1, wherein: A first connecting column is provided on the lower right end face of the first swing blade, which is located at the right end of the first swing blade connecting rod. The output end of the first swing blade motor is fixedly connected to the first connecting column; a second connecting column is provided on the lower left end face of the second swing blade, which is located at the left end of the second swing blade connecting rod. The output end of the second swing blade motor is fixedly connected to the second connecting column.

6. The lifting and swinging page structure according to claim 1, wherein: The first fixing surface is provided with a first fixing hole, and a first fixing column is provided corresponding to the first fixing hole at the upper inner end of the lower part of the first swing blade. The first fixing column is fixed to the first fixing hole by screws; the second fixing surface is provided with a second fixing hole, and a second fixing column is provided corresponding to the second fixing hole at the lower inner end of the lower part of the second swing blade. The second fixing column is fixed to the second fixing hole by screws.

7. The lifting and swinging page structure according to claim 1, wherein: The swing blade bracket extends downward at the front and rear ends to form limit surfaces, and the upper parts of the first swing blade and the second swing blade abut against the limit surfaces when rotated to the maximum angle.

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