Office chair with seat ventilation function

Abstract

An office chair with a seat ventilation function comprises a ventilation device, chair legs and a cushion arranged at the upper ends of the chair legs, the ventilation device comprises an air uniformizing box and a ventilation fan, and an air uniformizing cavity used for uniformizing air is formed in the air uniformizing box; a fan mounting position is arranged at the bottom of the air uniformizing box, an air inlet communicated with the air uniformizing cavity is formed in the fan mounting position, the ventilation fan is mounted in the fan mounting position, and the air outlet end of the ventilation fan corresponds to the air inlet; a plurality of air outlet holes communicated with the air uniformizing cavity are formed in the top of the air uniformizing box; the cushion comprises a sponge cushion located at the top of the air uniformizing box and a flexible wrapping cover arranged on the sponge cushion in a covering mode, and air exhaust holes corresponding to the air outlet holes are formed in the sponge cushion; and ventilation holes corresponding to the exhaust holes are formed in the flexible wrapping cover. When the ventilation fan is started, air blown out by the ventilation fan enters the air uniformizing cavity and then is uniformized by the air uniformizing cavity, so that the air blown to the buttocks of a user is more uniform, the user can feel a softer and more comfortable ventilation effect in the office process, and the use comfort of the user is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of office chair technology, specifically to an office chair with seat ventilation. Background Technology

[0002] To improve comfort during office work, existing office chairs typically integrate ventilation functions in their seat cushions. A ventilated office chair, as disclosed in patent number ZL202322187259.9, includes a hollow seat surface with a heat dissipation mechanism inside. This mechanism includes a cooling fan fixedly installed inside the hollow seat surface. The top of the hollow seat surface has uniformly distributed first ventilation holes, and a sponge pad is fixedly mounted on the top of the hollow seat surface. The sponge pad has uniformly distributed third ventilation holes, with each of the first and third ventilation holes corresponding one-to-one. When the cooling fan is turned on, air can be blown out from inside the hollow seat surface through the first and third ventilation holes, providing ventilation and cooling to the user's buttocks, thus improving comfort.

[0003] However, the heat dissipation mechanism of this technical solution does not have the function of uniform airflow. When the air generated by the cooling fan blows towards the first ventilation hole, due to the combined influence of various factors such as the layout and shape of the ventilation hole and the unevenness of the airflow from the cooling fan, it is very easy for some of the first ventilation holes to have high pressure and some to have low pressure. This uneven pressure distribution directly leads to uneven airflow, resulting in better heat dissipation in some ventilation hole areas and poor heat dissipation in others. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides an office chair with seat ventilation.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An office chair with ventilated seat includes a ventilation device, chair legs, and a seat cushion located on the upper part of the chair legs. The ventilation device comprises an air distribution box and a ventilation fan. The air distribution box has an air distribution cavity for equalizing airflow. The bottom of the air distribution box has a fan mounting position with an air inlet communicating with the air distribution cavity. The ventilation fan is installed in the fan mounting position, with its outlet corresponding to the air inlet. The top of the air distribution box has several air outlets communicating with the air distribution cavity. The seat cushion includes a sponge pad located on top of the air distribution box and a flexible cover covering the sponge pad. The sponge pad has exhaust holes corresponding to the exhaust holes. The flexible cover has ventilation holes corresponding to the exhaust holes.

[0007] In this utility model, the air distribution box includes an air distribution bottom shell and an air distribution seat plate. The fan is mounted on the bottom of the air distribution bottom shell, and the top of the air distribution bottom shell is provided with an air distribution groove with an upper opening. The air distribution seat plate is fixedly installed on the upper part of the air distribution bottom shell and closes and blocks the upper opening of the air distribution groove. The air distribution groove and the bottom of the air distribution seat plate are combined to form the air distribution cavity. The air outlet is opened on the air distribution seat plate.

[0008] In this invention, the air distribution cavity is provided with an air distribution module, and the air distribution module is provided with air distribution holes for air distribution.

[0009] In this utility model, the air distribution module includes a first air distribution plate and a second air distribution plate arranged at intervals from bottom to top in the air distribution cavity. The first air distribution plate and the second air distribution plate divide the air distribution cavity into three air distribution chambers arranged from bottom to top. Each of the first air distribution plate and the second air distribution plate is provided with a plurality of air distribution holes arranged in a longitudinal and transverse manner. The air distribution chambers that are adjacent to each other are connected through the air distribution holes.

[0010] In this utility model, the groove wall of the air distribution groove is provided with a first annular support groove and a second annular support groove arranged sequentially from bottom to top. The bottom edge of the second air distribution plate abuts against the bottom surface of the second annular support groove, and the top surface of the second air distribution plate is pressed and limited by the air distribution seat plate. The first air distribution plate is located in the first annular support groove, the bottom edge of the first air distribution plate abuts against the top surface of the first annular support groove, and the top surface of the first air distribution plate is pressed and limited by the second air distribution plate.

[0011] In this utility model, the bottom protrusion of the wind distribution seat plate is provided with a top shell mounting ring, which is inserted into the second annular groove, and the outer periphery of the top shell mounting ring is adapted to the contour of the second annular groove.

[0012] In this invention, the bottom of the top shell mounting ring abuts against the top surface of the second wind distribution plate.

[0013] In this utility model, the bottom of the second air distribution plate is provided with an air distribution pressing part, which is inserted into the first annular groove and its bottom abuts against the top surface of the first air distribution plate.

[0014] In this invention, the air distribution holes on the first air distribution plate and the air distribution holes on the second air distribution plate are staggered.

[0015] In this invention, the air distribution holes and the air outlet holes on the second air distribution plate are staggered.

[0016] The beneficial effects of this utility model are as follows: This utility model enables the office chair to have a seat ventilation function through a ventilation fan and an air distribution box. When the ventilation fan is turned on, the air it blows out enters the air distribution box and is then processed by the air distribution box, making the air blown towards the user's buttocks more even. This can effectively remove heat and moisture from the user's buttocks, keeping them dry and comfortable. The even airflow avoids the discomfort and stimulation caused by strong local winds, allowing the user to experience a gentler and more comfortable ventilation effect during office work, greatly improving the user's comfort. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 For the three-dimensional office chair Figure 1 ;

[0019] Figure 2 For the three-dimensional office chair Figure 2 ;

[0020] Figure 3 This is a diagram of the internal structure after the ventilation system and seat cushion are combined.

[0021] Figure 4 A three-dimensional view of the ventilation system;

[0022] Figure 5 Explosion of ventilation equipment Figure 1 ;

[0023] Figure 6 Explosion of ventilation equipment Figure 2 ;

[0024] Figure 7 This is a schematic diagram of the control device. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0026] Reference Figure 1-7An office chair with ventilated seat includes a ventilation device, a chair leg 1, and a seat cushion located on the upper part of the chair leg 1. The ventilation device includes an air distribution box 2 and a ventilation fan 3. The air distribution box 2 has an air distribution cavity for air distribution. The bottom of the air distribution box 2 has a fan mounting position 201, and the fan mounting position 201 has an air inlet 202 communicating with the air distribution cavity. The ventilation fan 3 is installed in the fan mounting position 201, and the air outlet of the ventilation fan 3 corresponds to the air inlet 202. The top of the air distribution box 2 has a plurality of air outlets 203 communicating with the air distribution cavity. The seat cushion includes a sponge pad 4 located on the top of the air distribution box 2 and a flexible cover 5 covering the sponge pad 4. The sponge pad 4 has exhaust holes 41 corresponding to the exhaust holes 203. The flexible cover 5 is preferably leather, and the flexible cover 5 has ventilation holes 51 corresponding to the exhaust holes 41. When the ventilation fan 3 is turned on, the air enters the air distribution chamber from the air inlet 202, and after being distributed evenly in the air distribution chamber, it passes through the exhaust hole 41 and the ventilation hole 51 in sequence to ventilate and cool the user's buttocks, improving the comfort of the person.

[0027] In a preferred embodiment, the air distribution box 2 includes an air distribution base shell 21 and an air distribution seat plate 22. The fan mounting position 201 is located on the bottom of the air distribution base shell 21. The top of the air distribution base shell 21 is provided with an air distribution groove 211 with an upper opening. The air distribution seat plate 22 is fixedly installed on the upper part of the air distribution base shell 21 by bolt connection and closes and blocks the upper opening of the air distribution groove 211. The air distribution groove 211 and the bottom of the air distribution seat plate 22 combine to form the air distribution cavity. The air outlet 203 is opened on the air distribution seat plate 22.

[0028] In a preferred embodiment, the air distribution cavity is provided with an air distribution module, and the air distribution module is provided with air distribution holes 10 for air distribution. The air distribution module can further distribute the air evenly. The air distribution module includes a first air distribution plate 6 and a second air distribution plate 7 arranged at intervals from bottom to top in the air distribution cavity. The first air distribution plate 6 and the second air distribution plate 7 divide the air distribution cavity into three air distribution chambers arranged from bottom to top. The first air distribution plate 6 and the second air distribution plate 7 are each provided with a plurality of air distribution holes 10 arranged in a longitudinal and transverse manner. The air distribution chambers that are adjacent to each other are connected through the air distribution holes 10. The first air distribution plate 6 and the second air distribution plate 7 can make the air distribution more even.

[0029] In a preferred embodiment, the wall of the air-equalizing groove 211 is provided with a first annular support groove 212 and a second annular support groove 213 arranged sequentially from bottom to top. The bottom edge of the second air-equalizing plate 7 abuts against the bottom surface of the second annular support groove 213, and the top surface of the second air-equalizing plate 7 is pressed and limited by the air-equalizing seat plate 22. The first air-equalizing plate 6 is located in the first annular support groove 212, and the bottom edge of the first air-equalizing plate 6 abuts against the top surface of the first annular support groove 212. The top surface of the first air-equalizing plate 6 is pressed and limited by the second air-equalizing plate 7. In this way, the first air-equalizing plate 6 and the second air-equalizing plate 7 are pressed together by the air-equalizing seat plate 22. The structure is simple and the installation is convenient, which can improve the ease of installation of the first air-equalizing plate 6 and the second air-equalizing plate 7.

[0030] In this embodiment, the bottom of the wind distribution seat plate 22 is provided with a top shell mounting ring 221. The top shell mounting ring 221 is inserted into the second annular groove 213. The outer periphery of the top shell mounting ring 221 is adapted to the contour of the second annular groove 213, so that the top shell mounting ring 221 and the second annular groove 213 can cooperate and position each other, restricting the wind distribution seat plate 22 from moving forward, backward, left, and right. The bottom of the top shell mounting ring 221 abuts against the top surface of the second wind distribution plate 7, so that the top shell mounting ring 221 presses and fixes the second wind distribution plate 7. Furthermore, the top shell mounting ring 221 is provided with a mounting screw hole 222, and the side wall of the wind distribution bottom shell 21 is provided with a mounting through hole 214 corresponding to the mounting screw hole 222. The screw of the mounting bolt passes through the mounting through hole 214 and is threaded into the mounting screw hole 222, so as to fix the wind distribution bottom shell 21 and the wind distribution seat plate 22 together. Furthermore, the bottom of the seat plate is provided with a grid-shaped reinforcing rib 224, which is integrally formed and connected with the top shell mounting ring 221. The grid-shaped reinforcing rib 224 is set to avoid the air outlet 203, and the grid-shaped reinforcing rib 224 is used to improve the structural strength of the air distribution seat plate 22.

[0031] In this embodiment, the bottom of the second air distribution plate 7 is provided with an air distribution pressing part 71. The air distribution pressing part 71 is inserted into the first annular groove 212 and its bottom is pressed against the top surface of the first air distribution plate 6, so that the top shell mounting ring 221 presses and fixes the first air distribution plate 6.

[0032] In a preferred embodiment, the air distribution holes 10 on the first air distribution plate 6 and the second air distribution plate 7 are staggered, and the air distribution holes 10 on the second air distribution plate 7 are staggered from the air outlet 203, so that the air in the air distribution cavity undergoes secondary air distribution through the first air distribution plate 6 and the second air distribution plate 7, thereby improving the uniformity of the airflow. The air distribution holes 10 are round holes, square holes, oblong holes, or irregularly shaped holes, preferably round holes.

[0033] In a preferred embodiment, the bottom of the air distribution shell 21 is provided with at least two fan mounting positions 201, which are arranged in a ring. Each fan mounting position 201 corresponds to one ventilation fan 3, thereby improving the efficiency of air entering the air distribution chamber through multiple ventilation fans 3.

[0034] In this embodiment, the bottom of the uniform air distribution shell 21 is connected to the connecting seat of the chair leg 1 by bolts. The connecting seat of the chair leg 1 is also equipped with a backrest 8 located at the rear end of the seat cushion. Furthermore, the sponge pad 4 is disposed on the top of the uniform air distribution seat 22. The outer periphery of the sponge pad 4 is provided with a downwardly extending sponge edging 42. The sponge edging 42 surrounds at least the outer periphery of the uniform air distribution box 2, thereby improving the comfort of the office chair. The flexible wrapping cover 5 surrounds the sponge edging 42 and is connected to the bottom of the uniform air distribution box 2. For example, when the uniform air distribution box 2 is made of wood, the flexible wrapping cover 5 is fixed to the bottom of the uniform air distribution box 2 with nails. When the uniform air distribution box 2 is made of plastic, the flexible wrapping cover 5 is fixed to the bottom of the uniform air distribution box 2 with bolts.

[0035] In this embodiment, the bottom of the air distribution shell 21 is provided with a control device 9 for controlling the operation of the ventilation fan 3. The control device 9 includes a control box 91, a battery, and a circuit board. The control box 91 is installed at the bottom of the air distribution shell 21, and the battery and circuit board are both installed inside the control box 91. The circuit board is electrically connected to the battery and the ventilation fan 3. The circuit board integrates a charging interface for connecting an external power source to charge the battery and a speed control switch for controlling the speed and on / off state of the ventilation fan 3. The control box 91 is provided with a clearance opening 911 corresponding to the charging interface to facilitate the charging of the external power source's charging cable. The rotation adjustment end of the speed control switch is equipped with a control knob 92 located outside the control box 91. By rotating the control knob 92, the user can start the ventilation fan 3 and adjust its speed. The battery and circuit board are not shown in the accompanying drawings.

[0036] The above description is only a preferred embodiment of the present utility model. Any technical solution that achieves the purpose of the present utility model by essentially the same means shall fall within the protection scope of the present utility model.

Claims

1. An office chair with ventilated seat, comprising a ventilation device, a chair leg (1) and a seat cushion arranged at the upper end of the chair leg (1), characterized in that: The ventilation device comprises an air equalizing box (2) and a ventilation fan (3), the air equalizing box (2) is internally provided with an air equalizing cavity for air equalization; the bottom of the air equalizing box (2) is provided with a fan mounting position (201), the fan mounting position (201) is provided with an air inlet (202) communicated with the air equalizing cavity, the ventilation fan (3) is mounted in the fan mounting position (201), and the air outlet end of the ventilation fan (3) corresponds to the air inlet (202); the top of the air equalizing box (2) is provided with a plurality of air outlets (203) communicated with the air equalizing cavity; the cushion comprises a sponge pad (4) located at the top of the air equalizing box (2) and a flexible wrapping cover (5) wrapped on the sponge pad (4), and the sponge pad (4) is provided with air outlets (41) corresponding to the air outlets (203); the flexible wrapping cover (5) is provided with air-permeable holes (51) corresponding to the air outlets (41).

2. An office chair with seat ventilation according to claim 1, characterized in that: The air equalizing box (2) comprises an air equalizing bottom shell (21) and an air equalizing seat plate (22), the fan mounting position (201) is arranged on the bottom of the air equalizing bottom shell (21), and the top of the air equalizing bottom shell (21) is provided with an air equalizing groove (211) with an open upper end; the air equalizing seat plate (22) is fixedly mounted on the upper portion of the air equalizing bottom shell (21) and closes and shields the open upper end of the air equalizing groove (211), the air equalizing groove (211) and the bottom of the air equalizing seat plate (22) are combined to form the air equalizing cavity, and the air outlets (203) are arranged on the air equalizing seat plate (22).

3. An office chair with seat ventilation according to claim 2, characterized in that: The air equalizing cavity is provided with an air equalizing module, and the air equalizing module is provided with air equalizing holes (10) for air equalization.

4. An office chair with seat ventilation according to claim 3, characterized in that: The air equalizing module comprises a first air equalizing plate (6) and a second air equalizing plate (7) which are arranged and mounted in the air equalizing cavity in a spaced manner from bottom to top, the first air equalizing plate (6) and the second air equalizing plate (7) divide the air equalizing cavity into three air equalizing chambers arranged from bottom to top in a spaced manner, the first air equalizing plate (6) and the second air equalizing plate (7) are both provided with a plurality of air equalizing holes (10) arranged in a longitudinal and transverse manner, and adjacent air equalizing chambers in the upper and lower directions are communicated through the air equalizing holes (10).

5. An office chair with seat ventilation according to claim 4, characterized in that: The groove wall of the air equalizing groove (211) is provided with a first annular groove (212) and a second annular groove (213) arranged in a sequential manner from bottom to top, the bottom surface edge of the second air equalizing plate (7) is abutted on the groove bottom surface of the second annular groove (213), and the top surface of the second air equalizing plate (7) is limited by the abutment of the air equalizing seat plate (22); the first air equalizing plate (6) is located in the first annular groove (212), the bottom edge of the first air equalizing plate (6) is abutted on the top surface of the first annular groove (212), and the top surface of the first air equalizing plate (6) is limited by the abutment of the second air equalizing plate (7).

6. An office chair with seat ventilation according to claim 5, characterized in that: The bottom of the air equalizing seat plate (22) is provided with a top shell mounting ring portion (221) in a protruding manner, the top shell mounting ring portion (221) is inserted into the second annular groove (213), and the outer peripheral contour of the top shell mounting ring portion (221) is matched with the contour of the second annular groove (213).

7. An office chair with seat ventilation according to claim 6, characterized in that: The bottom of the top shell mounting ring portion (221) is abutted on the top surface of the second air equalizing plate (7).

8. The chair of claim 4, wherein: The bottom of the second uniform air distribution plate (7) is provided with a uniform air distribution pressing part (71) which is inserted into the first annular supporting groove (212) and the bottom of which is pressed against the top surface of the first uniform air distribution plate (6).

9. The chair of claim 4, wherein: The uniform air distribution holes (10) on the first uniform air distribution plate (6) and the second uniform air distribution plate (7) are staggered.

10. The chair of claim 4, wherein: The uniform air distribution holes (10) on the second uniform air distribution plate (7) are staggered with the air outlet holes (203).

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