Office chair with ventilation function

Abstract

The utility model provides an office chair with ventilation function, which is used to solve the technical problem that dust is easy to accumulate in the ventilation hole of the sitting plate of the existing office chair with ventilation function, and the dust is blown out from the ventilation hole along with the airflow when the office chair is turned on, affecting the health of the user. The utility model discloses an office chair with ventilation function, which comprises a sitting plate, chair legs arranged at the bottom of the sitting plate, baffle plates arranged between the chair legs and the front and rear parts of the sitting plate, a cavity arranged in the sitting plate, an air inlet hole arranged at the bottom of the sitting plate, an air outlet hole arranged at the top of the sitting plate, the air inlet hole and the air outlet hole being communicated with the cavity, and a blower assembly arranged in the cavity of the sitting plate.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, and in particular to an office chair with ventilation function. Background Technology

[0002] Office chairs refer to all chairs used in offices, including executive chairs, mid-level chairs, guest chairs, staff chairs, conference chairs, visitor chairs, training chairs, ergonomic chairs, etc.

[0003] In the existing technology, some office chairs also have ventilation functions. The top surface of the seat of these office chairs is usually equipped with ventilation holes. Airflow flows from the ventilation holes of the seat to the user's buttocks, thereby achieving the effect of ventilation and heat dissipation for the user's buttocks. However, under normal circumstances, office chairs are placed under the desk for two-thirds of the day. Therefore, a lot of dust often accumulates in the ventilation holes on the top surface of the seat of such office chairs with ventilation functions. Every time the user turns on the ventilation function, this dust will be blown out of the ventilation holes with the airflow. Over time, it will affect the user's health. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an office chair with ventilation function, which solves the technical problem that dust easily accumulates in the ventilation holes of existing office chairs with ventilation function, and that this dust is dispersed from the ventilation holes with the airflow when the office chair's ventilation function is turned on, affecting the user's health.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: An office chair with ventilation function includes a seat, chair legs located at the bottom of the seat, and baffles located at the front and rear of the seat and between the chair legs. The seat has an internal cavity, an air inlet at the bottom, and an air outlet at the top. Both the air inlet and outlet are connected to the cavity. An air supply component is installed inside the seat cavity, which drives airflow from the air inlet to the air outlet. Through holes are provided on both sides of the seat. A rotating component is located between the two baffles. A dust-shielding cloth is movably mounted on the rotating component, passing through the two through holes. The dust-shielding cloth has an opening. When the opening on the dust-shielding cloth is rotated to the top of the seat, it connects with the air outlet, allowing airflow to reach the user's buttocks. When the opening on the dust-shielding cloth is rotated to the bottom of the seat, it covers the air outlet, preventing dust from falling into it.

[0006] Working principle: When the user turns on the ventilation function, the rotating component is activated, which drives the dust cover to rotate, so that the opening on the dust cover rotates to the top of the seat plate. At this time, the opening on the dust cover is connected to the air outlet. Then the air supply component is activated, which drives the airflow from the air inlet to the air outlet, thereby delivering airflow to the user's buttocks. When users do not sit in the office chair for an extended period of time (such as after work or while on a business trip), the rotating component is activated, causing the opening on the dust cover to rotate to the bottom of the seat. At this point, the dust cover covers the air vent, preventing dust from falling into the air vent.

[0007] Beneficial effects: 1. In this solution, by setting a rotating component, a through hole, a dust-shielding cloth, and an opening on the dust-shielding cloth, the rotating component is rotated. When the opening on the dust-shielding cloth rotates to the top of the seat, the opening on the dust-shielding cloth is connected to the air outlet, and the airflow can flow to the user's buttocks, thereby achieving the ventilation effect by activating the air supply component. When the opening on the dust-shielding cloth rotates to the bottom of the seat, the dust-shielding cloth covers the air outlet, and dust cannot fall into the air outlet. Therefore, every time the user turns on the ventilation function, little or no dust is blown out of the air outlet with the airflow, reducing the impact on the user's health. 2. By setting a rotating component to drive the dust cover to rotate and adjust the position of the opening on the dust cover, the ventilation and air outlet vents can be covered. Therefore, users do not need to set up additional covering cloths or other coverings to cover the air outlets. At the same time, the dust cover can also remind users to cover the air outlets when leaving their office chairs for a long time (such as after work or on a business trip), which is very practical. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 for Figure 1 A side view of the cross-sectional structure; Figure 3 for Figure 1 A schematic diagram of the structure of the middle dust-shielding cloth.

[0009] In the above-mentioned attached figures: 1. Seat plate; 2. Chair leg; 3. Baffle; 4. Cavity; 5. Air inlet; 6. Air outlet; 7. Through hole; 8. Dust cover; 9. Opening; 10. Mounting bracket; 11. Motor; 12. Drive shaft; 13. Main blade; 14. Main gear; 15. Secondary shaft; 16. Secondary gear; 17. Rack; 18. Secondary blade; 19. Rotating shaft; 20. Roller; 21. Operating block; 22. Rotating rod; 23. Limiting rod; 24. Sliding groove; 25. Sliding block; 26. Limiting threaded hole; 27. Locking rod; 28. Disc. Detailed Implementation

[0010] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0011] Example: like Figure 1As shown, an office chair with ventilation function includes a seat 1, chair legs 2 located at the bottom of the seat 1, and a baffle 3 located between the front and rear of the seat 1 and the chair legs 2. The seat 1 has a cavity 4 inside, an air inlet 5 at the bottom, and an air outlet 6 at the top. There are multiple air inlets 5 evenly distributed. Both the air inlets 5 and the air outlets 6 are connected to the cavity 4. An air supply component is installed in the cavity 4 of the seat 1. The air supply component drives the airflow from the air inlets 5 to the air outlets 6.

[0012] like Figure 1 As shown, a mounting bracket 10 is fixed to the bottom surface of the seat plate 1, and a motor 11 is fixed to the mounting bracket 10. The output end of the motor 11 faces upward and is connected to a vertical drive shaft 12. The top end of the drive shaft 12 rotatably passes through the bottom of the seat plate 1 and is rotatably disposed within the cavity 4 of the seat plate 1. The air supply assembly includes a main blade 13, which is fixed to the end of the drive shaft 12 located in the cavity 4 of the seat plate 1. This method of driving the main blade 13 to rotate by starting the motor 11 is mechanized and automated, and easy to operate.

[0013] like Figure 1 As shown, the transmission shaft 12 is provided with two vertically arranged main gears 14 fixed on the outer periphery of the rod segment below the seat plate 1. The seat plate 1 is also provided with two vertical secondary shafts 15 rotatably mounted on it via bearings. It should be noted that the bearing configuration is existing technology, and those skilled in the art should be clear about its structure, principle, and usage, etc., which will not be described in detail here. The two secondary shafts 15 are located on both sides of the transmission shaft 12, and the bottom ends of the two secondary shafts 15 are located below the seat plate 1. The outer periphery of the rod segment of the two secondary shafts 15 located below the seat plate 1 is fixed with secondary gears 16. The two main gears 14 and the two secondary gears 16 correspond one-to-one and are meshed with racks 17. The racks 17 are provided with dust covers to prevent dust from affecting the transmission. It should be noted that the dust cover configuration is existing technology, and its structure and principle will not be described in detail here. The top ends of the two secondary shafts 15 are located in the cavity 4 of the seat plate 1, and the ends of the two secondary shafts 15 located in the cavity 4 of the seat plate 1 are fixed with secondary blades 18. By setting two secondary blades 18, the airflow inside the cavity 4 is further accelerated, and the blowing effect is improved.

[0014] like Figure 1 and Figure 3As shown, the seat 1 has through holes 7 on both the left and right sides. A rotating assembly is provided between the two baffles 3. A dust-proof cloth 8 is movably mounted on the rotating assembly. The size of the dust-proof cloth 8 is larger than the distribution range of the air outlets 6, and can completely cover the multiple air outlets 6. The dust-proof cloth 8 passes through two through holes 7. The dust-proof cloth 8 has an opening 9. The size of the opening 9 is adapted to the distribution range of the air outlets 6, and can completely communicate with the multiple air outlets 6. The dust-proof cloth 8 is an elastic textile, and the two ends of the dust-proof cloth 8 are connected together by linear stitching to form a closed loop. When the opening 9 on the dust-proof cloth 8 rotates to the top of the seat 1, the opening 9 on the dust-proof cloth 8 communicates with the air outlets 6, and the airflow can flow to the user's buttocks. When the opening 9 on the dust-proof cloth 8 rotates to the bottom of the seat 1, the dust-proof cloth 8 covers the air outlets 6, and dust cannot fall into the air outlets 6.

[0015] like Figure 1 and Figure 2 As shown, the rotating assembly includes two rotating shafts 19. The rotating assembly can be driven manually or electrically. Specifically, in this solution, it is driven manually. One rotating shaft 19 is rotatably connected to two baffles 3 at both ends via bearings. It should be noted that the bearings are existing technology, and their structure and principle will not be elaborated here. The other rotating shaft 19 is connected to the two baffles 3 via a moving assembly, which can drive the other rotating shaft 19 to move horizontally. Rollers 20 are fixed to the outer periphery of both rotating shafts 19, and the dust-shielding cloth 8 is located between the two rollers 20. Since the dust-shielding cloth 8 is elastic, the dust-shielding cloth 8 can be tensioned by moving the other rotating shaft 19 horizontally, preventing the dust-shielding cloth 8 from loosening and affecting its normal rotation.

[0016] like Figure 1 and Figure 2 As shown, the moving assembly includes two operating blocks 21. The two ends of another rotating shaft 19 are rotatably connected to the two operating blocks 21 via bearings. It should be noted that the bearings are existing technology, and their structure and principle will not be elaborated here. A rotating rod 22, parallel to the seat width direction of the seat plate 1, is rotatably mounted on the chair leg 2. The rotating rod 22 is a threaded rod, and one of the operating blocks 21 is threadedly connected to the rotating rod 22. A limiting rod 23, parallel to the rotating rod 22 and on the same horizontal plane, is also fixed on the chair leg 2. The limiting rod 23 is a smooth round rod, and the other operating block 21 is slidably connected to the limiting rod 23. Both baffles 3 are provided with sliding grooves 24, and both operating blocks 21 are fixed with sliders 25 near the baffles 3. The two sliders 25 are horizontally slidably disposed within the two sliding grooves 24. The limiting rod 23, sliding grooves 24, and sliders 25 enhance the stability of the other rotating shaft 19 during horizontal movement.

[0017] like Figure 1 and Figure 2As shown, the chair leg 2 is provided with a ring of limiting threaded holes 26. The end of the rotating rod 22 away from the operating block 21 is fixed with a disc 28. A locking rod 27 is rotatably inserted through the disc 28. The locking rod 27 is used to rotatably insert through the disc 28 and be threaded into one of the limiting threaded holes 26, thereby locking the rotating rod 22 and preventing the locking rod 27 from rotating and driving the rotating rod 22 to rotate when the other rotating shaft 19 needs to be in a stationary state.

[0018] Working principle: When the user turns on the ventilation function, one of the rotating shafts 19 is rotated. The rotation of the rotating shaft 19 drives the roller 20 connected to it to rotate. The rotation of the roller 20 drives the dust cover 8 to move. At the same time, the other rotating shaft 19 and the roller 20 rotate together, so that the opening 9 on the dust cover 8 rotates to the top of the seat plate 1. At this time, the opening 9 on the dust cover 8 is connected to the air outlet 6. Then, the motor 11 is started. The output of the motor 11 drives the transmission shaft 12 to rotate. The rotation of the transmission shaft 12 drives the main blade 13 to rotate. The rotation of the transmission shaft 12 simultaneously drives the two main gears 14 to rotate. The rotation of the two main gears 14 drives the two racks 17 to move. The movement of the two racks 17 drives the two auxiliary gears 16 to rotate. The rotation of the two auxiliary gears 16 drives the two auxiliary shafts 15 to rotate. The rotation of the two auxiliary shafts 15 drives the two auxiliary blades 18 to rotate. Thus, the main blade 13 and the two auxiliary blades 18 rotate simultaneously, driving the airflow from the air inlet 5 to the air outlet 6, delivering air to the user's buttocks. When a user does not sit in the office chair for an extended period of time (such as after work or while on a business trip), one of the rotating shafts 19 is turned. The rotation of the rotating shaft 19 drives the roller 20 connected to it to rotate. The rotation of the roller 20 causes the dust cover 8 to move. At the same time, the other rotating shaft 19 and the roller 20 rotate together, so that when the opening 9 on the dust cover 8 rotates to the bottom of the seat 1, the dust cover 8 covers the air outlet 6, preventing dust from falling into the air outlet 6.

[0019] When the dust-covering cloth 8 is in a relaxed state, hold the disc 28 and rotate the rotating rod 22. The operating block 21 connected to the rotating rod 22 moves, so that the two sliders 25 move in the corresponding grooves 24 in the direction of approaching or moving away from the fixed rotating shaft 19 to tension the dust-covering cloth 8. Then, screw the locking rod 27 into the disc 28 and the corresponding limiting threaded hole 26 to lock the rotating rod 22.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An office chair with ventilation function, comprising a seat (1), chair legs (2) disposed at the bottom of the seat (1), and baffles (3) disposed at the front and rear of the seat (1) and between the chair legs (2), characterized in that: The seat (1) has a cavity (4) inside, an air inlet (5) at the bottom, and an air outlet (6) at the top. The air inlet (5) and the air outlet (6) are both connected to the cavity (4). An air supply component is installed inside the cavity (4) of the seat (1), which drives the airflow from the air inlet (5) to the air outlet (6). The seat (1) has through holes (7) on both the left and right sides. A rotating component is installed between the two baffles (3). The rotating component is movably mounted on the rotating component. There is a dust-proof cloth (8) through which two through holes (7) are passed. The dust-proof cloth (8) has an opening (9). When the opening (9) on the dust-proof cloth (8) is rotated to the top of the seat (1), the opening (9) on the dust-proof cloth (8) is connected to the air outlet (6), and the airflow can flow to the user's buttocks. When the opening (9) on the dust-proof cloth (8) is rotated to the bottom of the seat (1), the dust-proof cloth (8) covers the air outlet (6), and dust cannot fall into the air outlet (6).

2. The office chair having a ventilation function according to claim 1, wherein: The bottom surface of the seat plate (1) is fixedly provided with a mounting bracket (10), and a motor (11) is fixedly provided on the mounting bracket (10). The output end of the motor (11) faces upward and is connected to a vertical transmission shaft (12). The top end of the transmission shaft (12) rotates through the bottom of the seat plate (1) and is rotatably disposed in the cavity (4) of the seat plate (1). The air supply assembly includes a main blade (13), and the main blade (13) is fixedly disposed at the end of the transmission shaft (12) located in the cavity (4) of the seat plate (1).

3. The office chair having a ventilation function according to claim 2, wherein: The transmission shaft (12) is provided with two vertically arranged main gears (14) fixed on the outer periphery of the rod segment below the seat plate (1). The seat plate (1) is also provided with two vertical secondary shafts (15) rotatably via bearings. The two secondary shafts (15) are located on both sides of the transmission shaft (12). The bottom ends of the two secondary shafts (15) are located below the seat plate (1). The outer periphery of the rod segment of the two secondary shafts (15) below the seat plate (1) is provided with secondary gears (16). The two main gears (14) and the two secondary gears (16) correspond one-to-one and are meshed with racks (17). The top ends of the two secondary shafts (15) are located in the cavity (4) of the seat plate (1). The ends of the two secondary shafts (15) located in the cavity (4) of the seat plate (1) are provided with secondary blades (18).

4. The office chair with a ventilation function according to claim 1, wherein: The rotating assembly includes two rotating shafts (19), one of which is rotatably connected to two baffles (3) at both ends by bearings, and the other rotating shaft (19) is connected to the two baffles (3) by a moving assembly. The moving assembly can drive the other rotating shaft (19) to move horizontally. Rollers (20) are fixed on the outer periphery of both rotating shafts (19), and the dust-shielding cloth (8) is placed between the two rollers (20).

5. The office chair having a ventilation function according to claim 4, wherein: The moving assembly includes two operating blocks (21), and the two ends of another rotating shaft (19) are rotatably connected to the two operating blocks (21) through bearings. A rotating rod (22) parallel to the seat width direction of the seat plate (1) is rotatably passed through the chair leg (2). The rotating rod (22) is a threaded rod. One of the operating blocks (21) is threadedly connected to the rotating rod (22). A limiting rod (23) parallel to the rotating rod (22) and at the same horizontal plane is also fixed on the chair leg (2). The limiting rod (23) is a smooth round rod. The other operating block (21) is slidably connected to the limiting rod (23). Both of the baffles (3) are provided with sliding grooves (24). Both of the operating blocks (21) are fixed with sliders (25) on the side near the baffles (3). The two sliders (25) are horizontally slidably disposed in the two sliding grooves (24).

6. The office chair having a ventilation function according to claim 5, wherein: The chair leg (2) is provided with a ring of limiting threaded holes (26). The end of the rotating rod (22) away from the operating block (21) is fixed with a disc (28). A locking rod (27) is rotatably passed through the disc (28). The locking rod (27) is used to rotatably pass through the disc (28) and is threadedly connected to one of the limiting threaded holes (26).

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