Seat leg stretching device

Abstract

The utility model belongs to the technical field of seat leg stretching devices, and discloses a seat leg stretching device which comprises a hollow plate, a bearing plate is arranged on one side of the hollow plate, an electric telescopic rod is installed in the hollow plate, an installation box is arranged on the side, away from the hollow plate, of the upper end face of the bearing plate, and a fan is installed in the installation box. The two ends of the fan are connected with an air inlet pipeline and an air outlet pipeline respectively, a heating box is installed at the air outlet end of the air outlet pipeline, an electric heating block is installed in the heating box, the air outlet end of the heating box is connected with an air guide pipeline, and filtering assemblies are installed on the air inlet pipeline and the air guide pipeline. When the legs and the feet of a user are cold in winter, the fan and the electric heating block are started, hot air is blown out through the air guide pipeline to heat the legs and the feet of the user, when the legs and the feet are hot in summer, air flow is blown out through the air guide pipeline to facilitate heat dissipation, and more comfort and health benefits are provided according to the requirements of the user.

Description

Technical Field

[0001] The utility model belongs to the technical field of seat leg stretching devices, and in particular relates to a seat leg stretching device. Background Art

[0002] The seat leg extension device is a device designed to improve sitting comfort and support physical health. This device is especially suitable for people who sit for long periods of time to work or who need to improve leg blood circulation and relieve pressure on the lower limbs. It reduces the pressure on the legs and waist caused by sitting for long periods of time, thereby providing a more comfortable and healthy sitting experience.

[0003] When the existing seat leg extension device is in use, the legs and feet are supported by the extended frame. In winter and summer, the user's legs and feet are easily cold and hot due to the external environment, and the temperature of the frame is difficult to adjust, resulting in poor comfort of the device. In addition, when the device is folded, it is easy for the device to collide with each other, causing the device to be easily damaged, thereby affecting the service life of the device. Utility Model Content

[0004] The purpose of the utility model is to provide a seat leg extension device to solve the problems raised in the above-mentioned background technology that in winter and summer, the user's legs and feet are prone to cold and heat due to the external environment, the temperature of the frame is difficult to adjust, making the equipment less comfortable, and when the equipment is folded, collisions are likely to occur between the devices, causing the equipment to be easily damaged, thereby affecting the service life of the equipment.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a seat leg extension device, comprising: a hollow plate, a supporting plate is provided on one side of the hollow plate, and a part of the supporting plate is located in the hollow plate, an electric telescopic rod is installed in the hollow plate, the output end of the electric telescopic rod is connected to the side wall of the supporting plate, an installation box is provided on the side of the upper end surface of the supporting plate away from the hollow plate, a fan is installed in the installation box, the two ends of the fan are respectively connected to an air inlet duct and an air outlet duct, a heating box is installed at the air outlet end of the air outlet duct, an electric heating block is installed in the heating box, the air outlet end of the heating box is connected to an air guide duct, and filter components are installed on the air inlet duct and the air guide duct.

[0006] Preferably, the filter assembly includes a filter pipe and a filter element, the filter pipe is installed on the air inlet end of the air inlet pipe and the air outlet end of the air guide pipe, the filter element is installed in the filter pipe, the inner wall of the filter pipe is provided with a first thread groove, the outer walls of the air inlet pipe and the air guide pipe are provided with external threads, and the first thread groove and the external thread are adapted to each other.

[0007] Preferably, a fixed plate is installed on the lower end surface of the supporting plate, a movable groove is opened on the side wall of the fixed plate, a movable plate is arranged in the movable groove, an anti-slip assembly is arranged between the fixed plate and the movable plate, a transverse spring is installed between the fixed plate and the movable plate, a foam plate is installed on the side wall of the movable plate, and a rubber pad is installed on the side wall of the hollow plate.

[0008] Preferably, the anti-slip assembly comprises an anti-slip groove and an anti-slip block, the anti-slip groove is provided on the inner wall of the fixed plate, the anti-slip block is mounted on the outer wall of the movable plate, and the anti-slip groove and the anti-slip block are matched.

[0009] Preferably, a hollow column is installed on the side of the lower end surface of the supporting plate away from the hollow plate, a threaded column is provided below the hollow column, a second threaded groove is opened on the inner wall of the hollow column, the threaded column and the second threaded groove are adapted to each other, and a rolling wheel is installed at the bottom end of the threaded column.

[0010] Preferably, a rolling groove is provided on the inner wall of the hollow plate, a rolling ball is installed in the rolling groove, and the bearing plate moves on the rolling ball.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The utility model improves the comfort level by providing a fan, an electric heating block and an air duct. When the user's legs and feet are cold in winter, the fan and the electric heating block are started to blow hot air through the air duct to heat the user's legs and feet. When the legs and feet are hot in summer, the fan is started and the air duct blows out air to facilitate heat dissipation. According to user needs, more comfort and health benefits can be provided, and the filter component filters the incoming and outgoing gases, thereby reducing the cleaning and maintenance frequency of the equipment and extending the service life of the equipment.

[0013] (2) The utility model reduces the impact force by providing a foam plate, a rubber pad and a spring. When in use, the foam plate contacts the rubber pad. The porous structure of the foam plate disperses the impact energy inside the material, reducing local stress concentration. The rubber pad absorbs and dissipates energy during deformation, effectively reducing the impact force. The spring converts kinetic energy into its own elastic potential energy, thereby absorbing the energy during the impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a cross-sectional view of the installation box of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the fixing plate of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the hollow column of the utility model;

[0018] In the figure: 1. hollow plate; 2. bearing plate; 3. electric telescopic rod; 4. installation box; 5. fan; 6. air inlet duct; 7. air outlet duct; 8. heating box; 9. electric heating block; 10. air guide duct; 11. filter duct; 12. filter element; 13. first thread groove; 14. external thread; 15. fixed plate; 16. movable groove; 17. movable plate; 18. spring; 19. foam plate; 20. anti-slip groove; 21. anti-slip block; 22. rubber pad; 23. hollow column; 24. threaded column; 25. second thread groove; 26. rolling wheel; 27. rolling groove; 28. rolling ball. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 2 As shown, the utility model provides the following technical solutions: a seat leg extension device, comprising: a hollow plate 1, a supporting plate 2 is provided on one side of the hollow plate 1, and a part of the supporting plate 2 is located in the hollow plate 1, an electric telescopic rod 3 is installed in the hollow plate 1, and the output end of the electric telescopic rod 3 is connected to the side wall of the supporting plate 2, and a mounting box 4 is provided on the side of the upper end surface of the supporting plate 2 away from the hollow plate 1, a fan 5 is installed in the mounting box 4, and the two ends of the fan 5 are respectively connected to an air inlet duct 6 and an air outlet duct 7, a heating box 8 is installed at the air outlet end of the air outlet duct 7, an electric heating block 9 is installed in the heating box 8, and the air outlet end of the heating box 8 is connected to an air guide duct 10, and filter components are installed on the air inlet duct 6 and the air guide duct 10.

[0021] Furthermore, the filter assembly includes a filter pipe 11 and a filter element 12. The filter pipe 11 is installed on the air inlet end of the air inlet pipe 6 and the air outlet end of the air guide pipe 10. The filter element 12 is installed in the filter pipe 11. The inner wall of the filter pipe 11 is provided with a first thread groove 13. The outer walls of the air inlet pipe 6 and the air guide pipe 10 are provided with external threads 14. The first thread groove 13 and the external threads 14 are adapted to each other.

[0022] Furthermore, a rolling groove 27 is formed on the inner wall of the hollow plate 1 , a rolling ball 28 is installed in the rolling groove 27 , and the supporting plate 2 moves on the rolling ball 28 .

[0023] Through the above technical solution:

[0024] When in use, the hollow plate 1 is installed horizontally on the leg of the seat. When the legs need to be raised, the electric telescopic rod 3 is started, and the electric telescopic rod 3 drives the load-bearing plate 2 to move, thereby increasing the leg raising area. When the user's legs and feet are cold in winter, the fan 5 and the electric heating block 9 are started, and hot air is blown out through the air duct 10 to heat the user's legs and feet to improve comfort. When the legs and feet are hot in summer, the fan 5 is started, and the air duct 10 blows out air flow to dissipate heat. Providing air flow according to user needs can provide more comfort and health benefits. The filter component filters the incoming and outgoing gas, thereby improving the air quality, removing pollutants such as dust and particulate matter in the gas, and preventing Prevent these substances from accumulating inside the fan 5, heating box 8 and other equipment, thereby reducing the frequency of cleaning and maintenance of the equipment, extending the service life of the equipment, and reducing maintenance costs. When the filter pipe 11 needs to be disassembled, screw the filter pipe 11, separate the first thread groove 13 from the external thread 14, and then remove the filter pipe 11, so as to facilitate timely cleaning and replacement of the filter element 12 to ensure the working effect of the filter assembly. When the supporting plate 2 moves in the hollow plate 1, it drives the rolling ball 28 to roll in the rolling groove 27, thereby converting the sliding friction between the hollow plate 1 and the supporting plate 2 into rolling friction, reducing friction, saving effort, and thus reducing energy consumption.

[0025] See also Figure 1 and Figure 3 As shown, a fixed plate 15 is installed on the lower end surface of the bearing plate 2, a movable groove 16 is opened on the side wall of the fixed plate 15, a movable plate 17 is arranged in the movable groove 16, an anti-slip component is arranged between the fixed plate 15 and the movable plate 17, a transverse spring 18 is installed between the fixed plate 15 and the movable plate 17, a foam plate 19 is installed on the side wall of the movable plate 17, and a rubber pad 22 is installed on the side wall of the hollow plate 1.

[0026] Furthermore, the anti-slip assembly includes an anti-slip groove 20 and an anti-slip block 21 . The anti-slip groove 20 is provided on the inner wall of the fixed plate 15 , and the anti-slip block 21 is installed on the outer wall of the movable plate 17 . The anti-slip groove 20 and the anti-slip block 21 are adapted to each other.

[0027] Through the above technical solution:

[0028] When the carrying plate 2 is to be folded up, the electric telescopic rod 3 is started, and the electric telescopic rod 3 drives the carrying plate 2 to move into the hollow plate 1. Before it is completely folded up, the foam plate 19 touches the rubber pad 22. The porous structure of the foam plate 19 can not only absorb energy, but also disperse the impact energy inside the material, reduce local stress concentration, and avoid damage concentrated in a small area. The rubber pad 22 has high elasticity and can be significantly deformed when impacted, and restore to its original state after the external force is removed. The rubber pad 22 absorbs and dissipates energy during the deformation process, effectively reducing the impact force, and then drives the movable plate 1 7 moves in the movable groove 16, the spring 18 expands and contracts, and the spring 18 converts kinetic energy into its own elastic potential energy, thereby absorbing the energy in the impact process. After the impact force disappears, the spring 18 can release or gradually dissipate this part of the potential energy, reducing the direct impact on the equipment, thereby effectively reducing the collision force between the equipment, protecting the equipment, and increasing the service life of the equipment. When the movable plate 17 moves, it drives the anti-dropping block 21 to move in the anti-dropping groove 20, thereby limiting the position between the fixed plate 15 and the movable plate 17, so that the movable plate 17 is not easy to fall off from the movable groove 16.

[0029] For further information, see Figure 1 and Figure 4 As shown, a hollow column 23 is installed on the side of the lower end surface of the supporting plate 2 away from the hollow plate 1, a threaded column 24 is provided below the hollow column 23, a second threaded groove 25 is opened on the inner wall of the hollow column 23, the threaded column 24 and the second threaded groove 25 are adapted to each other, and a rolling wheel 26 is installed at the bottom end of the threaded column 24.

[0030] Specifically, by screwing the threaded column 24, the threaded column 24 interacts with the second threaded groove 25, so that the rolling wheel 26 moves until the rolling wheel 26 contacts the ground, supports the supporting plate 2, and thereby enhances the stability of the device. When not in use, the threaded column 24 is screwed in the reverse direction to retract the rolling wheel 26, thereby reducing space occupancy and facilitating collection.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chair leg stretching device, characterized in that: include: A hollow plate (1), a bearing plate (2) is provided on one side of the hollow plate (1), and a part of the bearing plate (2) is located inside the hollow plate (1), an electric telescopic rod (3) is installed inside the hollow plate (1), the output end of the electric telescopic rod (3) is connected to the side wall of the bearing plate (2), an installation box (4) is provided on the side of the upper end surface of the bearing plate (2) away from the hollow plate (1), a fan (5) is installed in the installation box (4), the two ends of the fan (5) are respectively connected to an air inlet pipe (6) and an air outlet pipe (7), a heating box (8) is installed at the air outlet end of the air outlet pipe (7), an electric heating block (9) is installed in the heating box (8), the air outlet end of the heating box (8) is connected to an air guide pipe (10), and filter components are installed on both the air inlet pipe (6) and the air guide pipe (10).

2. A chair leg stretching device according to claim 1, characterized in that: The filter assembly comprises a filter pipe (11) and a filter element (12); the filter pipe (11) is installed on the air inlet end of the air inlet pipe (6) and the air outlet end of the air guide pipe (10); the filter element (12) is installed in the filter pipe (11); the inner wall of the filter pipe (11) is provided with a first thread groove (13); the outer walls of the air inlet pipe (6) and the air guide pipe (10) are provided with external threads (14); the first thread groove (13) and the external threads (14) are matched.

3. A chair leg stretching device according to claim 2, characterized in that: A fixed plate (15) is installed on the lower end surface of the bearing plate (2), a movable groove (16) is opened on the side wall of the fixed plate (15), a movable plate (17) is arranged in the movable groove (16), an anti-slip component is arranged between the fixed plate (15) and the movable plate (17), a transverse spring (18) is installed between the fixed plate (15) and the movable plate (17), a foam plate (19) is installed on the side wall of the movable plate (17), and a rubber pad (22) is installed on the side wall of the hollow plate (1).

4. A chair leg stretching device according to claim 3, characterized in that: The anti-slip assembly comprises an anti-slip groove (20) and an anti-slip block (21); the anti-slip groove (20) is arranged on the inner wall of the fixed plate (15); the anti-slip block (21) is installed on the outer wall of the movable plate (17); and the anti-slip groove (20) and the anti-slip block (21) are matched.

5. A chair leg stretching device according to claim 4, characterized in that: A hollow column (23) is installed on the side of the lower end surface of the bearing plate (2) away from the hollow plate (1), a threaded column (24) is provided below the hollow column (23), a second threaded groove (25) is opened on the inner wall of the hollow column (23), the threaded column (24) and the second threaded groove (25) are matched, and a rolling wheel (26) is installed at the bottom end of the threaded column (24).

6. A chair leg stretching device according to claim 5, characterized in that: A rolling groove (27) is provided on the inner wall of the hollow plate (1), a rolling ball (28) is installed in the rolling groove (27), and the bearing plate (2) moves on the rolling ball (28).

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