Cleaning device for office swivel chair universal wheels

Abstract

The invention relates to a cleaning device for a universal wheel of an office swivel chair. The technical problems that an existing universal wheel cleaning device needs to be detached, and the cleaning efficiency is low are solved. According to the technical scheme, the interior of the device is divided into a water storage chamber, a cleaning chamber, two water pump chambers and a garbage recycling chamber, the water storage chamber is located on the rear side, the cleaning chamber is located in the middle of the front side of the water storage chamber, the water pump chambers are located on the two sides of the cleaning chamber, and the garbage recycling chamber is located at the bottom; a motor box is arranged in the water storage chamber; a motor is fixedly arranged in the motor box; water pumps are installed in the water pump chamber and connected with the water storage chamber, each water pump is connected with two sprayers, and the four sprayers are fixedly arranged on the side wall of the cleaning chamber. Driving rollers, an outer side cleaning brush and an inner side cleaning brush are arranged in the cleaning chamber, the two driving rollers are arranged at the bottoms of the left side and the right side in the cleaning chamber in parallel, the two side cleaning brushes are fixedly arranged on the front side wall and the rear side wall of the cleaning chamber, the two side cleaning brushes are fixedly arranged on the bottom face of the cleaning chamber, an arc-shaped shaft hole is formed in the inner side cleaning brush, and a water outlet is formed in the face of the cleaning chamber; according to the cleaning device, disassembly-free cleaning of the universal wheels is achieved, automatic comprehensive cleaning is achieved, and the cleaning efficiency is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of office equipment maintenance equipment, and in particular relates to a cleaning device for universal wheels of an office swivel chair. Background Art

[0002] As a core piece of furniture in modern office environments, the caster wheels of office swivel chairs are key components for flexible movement. These casters typically consist of a plastic or rubber wheel body, a metal bearing, and a hub, with varying numbers of circular or strip-shaped holes distributed across the wheel body. These holes were designed to reduce wheel weight to reduce rotational resistance, while also enhancing air permeability and preventing aging caused by frictional heat generation during long-term use. However, in everyday office environments, the use of caster wheels on office swivel chairs is quite unique: they are easily stained by light impurities such as coffee stains, tea stains, food crumbs, hair, and fiber lint. These impurities can easily become lodged in the gaps between the caster axles. Dust from the office floor, mixed with mud and sand from shoe soles, can form sticky dirt within the gaps. As the swivel chair rotates frequently, the dirt gradually compacts, causing the caster wheels to stall, make unusual noises, and even "deviate."

[0003] When it comes to cleaning the caster wheels of office swivel chairs, manual scrubbing has significant shortcomings in terms of efficiency, cleanliness, safety, and cost-effectiveness. First, due to the precise structure of the caster wheels, including bearings, balls, and dust covers, manual cleaning requires a tedious process of disassembly, wiping, and assembly. Treatment of a single chair can take 15-20 minutes, making it extremely inefficient for batch cleaning tasks. This makes it difficult to maintain the dozens or even hundreds of swivel chairs typically found in office settings, and can disrupt normal office work. Second, cleaning effectiveness is significantly limited. Daily accumulation of hair, fibers, dust, and oil easily lodges in the gaps between the wheel axles and the joints, making it difficult to reach deep enough for manual cleaning with tools like rags and brushes. Residual stains accelerate component wear, especially grease, which attracts dust, creating a vicious cycle that significantly shortens the caster wheel's lifespan. Furthermore, the operation carries significant risks. Improper force during disassembly can easily lead to component damage, such as breakage of the plastic wheel frame and loss of the metal bearing balls. Misaligned assembly can cause stalling, unusual noises, and even compromise the chair's load-bearing stability, posing a safety hazard. In addition, the long-term use of manual cleaning mode will incur high labor costs. The continuous investment of full-time personnel in the accumulated annual cost of working hours far exceeds the investment in professional cleaning equipment. In addition, the cleaning quality is significantly affected by personal experience and sense of responsibility, making it difficult to achieve standardized maintenance. Summary of the Invention

[0004] The purpose of the present invention is to solve the above technical problems and provide a cleaning device for the universal wheels of an office swivel chair.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A cleaning device for the universal wheels of an office swivel chair. The device has an overall rectangular parallelepiped structure and is internally divided into several functional chambers, including a water storage chamber, a cleaning chamber, two water pump chambers, and a garbage collection chamber. The water storage chamber is located at the rear side, the cleaning chamber is located in the middle of the front side of the water storage chamber, the two water pump chambers are located on the left and right sides of the cleaning chamber, and the garbage collection chamber is located at the bottom of the water storage chamber, the cleaning chamber, and the two water pump chambers.

[0007] A sealed motor box is provided in the middle of the bottom surface of the water storage chamber, and two motors are fixed symmetrically in the motor box. A water inlet is provided on the top surface of the water storage chamber, and the water inlet is connected to a water pipe.

[0008] Water pumps are symmetrically installed in the two water pump rooms, the water inlets of the water pumps are connected to the water storage chamber, and the water outlets of each water pump are connected to two nozzles. The four nozzles of the two water pump rooms are respectively fixed on the left and right side walls of the cleaning chamber;

[0009] The cleaning chamber is provided with two driving rollers, two outer side cleaning brushes and two inner side cleaning brushes, the two driving rollers are arranged in parallel at the bottom of the left and right sides of the cleaning chamber, and one end of the two driving rollers is connected to the output shafts of the two motors respectively, the two outer side cleaning brushes are symmetrically fixed in the middle of the front and rear side walls of the cleaning chamber, the two inner side cleaning brushes are vertically fixed on the front and rear sides of the bottom of the cleaning chamber, and one brush side thereof faces the outer side cleaning brushes, an arc-shaped shaft hole is opened in the middle of the top of the inner side cleaning brush for placing the axle of a universal wheel, the distance between the two inner side cleaning brushes is smaller than the gap between the two wheels of the universal wheel, the distance between the driving roller and the central axis of the outer side cleaning brush is equal to the diameter of the universal wheel, and a drain outlet with a plug is provided on the bottom surface of the cleaning chamber;

[0010] When the universal wheel is directly placed in the cleaning chamber in a non-disassembly manner, the brush surfaces of the two outer cleaning brushes contact the outer side of the universal wheel, and the brush surfaces of the two inner cleaning brushes contact the inner side of the universal wheel, and the wheel edge of the universal wheel presses against the driving roller;

[0011] The garbage collection chamber is connected to the cleaning chamber through a drain port. A drain pipe is provided at the lower portion of the rear side wall of the garbage collection chamber, and the drain pipe is connected to a sewage pool.

[0012] The motor and water pump are externally connected to a power supply and a switch.

[0013] Furthermore, the four nozzles are all horizontally deflected at an angle θ, so that the two nozzles on one side are respectively directed toward the outer side and inner side of one side of the universal wheel, and the two nozzles on the other side are respectively directed toward the outer side and inner side of the other side of the universal wheel.

[0014] Furthermore, the deflection angle θ of the nozzle is 10-15°.

[0015] Furthermore, a drying chamber is provided on the left and right sides of the cleaning chamber and below the two water pump chambers. A vent with a sealed door is provided on the partition between the cleaning chamber and the drying chamber. A fan is horizontally provided in the drying chamber. The sealed door of the vent is linked to the fan for control. The vent is automatically opened and the fan is started after cleaning is completed. An arc-shaped wind guide plate is provided at the vent so that when the fan rotates, the blown wind is collected in the vent through the wind guide plate.

[0016] Furthermore, a detachable filter screen is provided at the inlet of the drainage pipe of the garbage recycling chamber.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This invention uses dual motors to drive the universal wheel's rotation, combined with the synchronized friction of internal and external cleaning brushes and the directional spraying of multiple nozzles, to achieve automated, comprehensive cleaning of the inner and outer surfaces and rim of the universal wheel. A single operation requires only placement of the wheel and activation of a switch; no manual removal or wiping is required. This significantly improves cleaning efficiency compared to manual operation (single-wheel cleaning time is reduced to 3-5 minutes), making it particularly suitable for centralized maintenance of large quantities of office swivel chairs.

[0019] 2. The four nozzles of the present invention are horizontally deflected by 10°-15°, and the water flow directly covers the gaps and bearing areas on the inner and outer sides of the universal wheel, effectively flushing the hair, fibers and oil embedded between the wheel axles. The arc-shaped shaft hole of the inner cleaning brush fixes the wheel axle, ensuring that the bristles fit tightly against the concave surface of the wheel body; the spacing between the outer cleaning brush and the drive roller is customized according to the diameter of the universal wheel to ensure full contact with the brush surface. The two work together to thoroughly remove sticky dirt that is difficult to reach manually;

[0020] 3. The garbage collection chamber of the present invention is used to collect sewage and precipitate solid impurities. The filter screen prevents the drain pipe from being blocked, reducing the burden of subsequent sewage treatment. The fan converges the airflow to the vent through the air guide plate, quickly drying the universal wheel after cleaning, avoiding residual water stains that cause rust or secondary pollution, and improving maintenance efficiency.

[0021] 4. The present invention realizes direct cleaning of the universal wheel without disassembly, eliminating damage such as wheel frame breakage and bearing shedding caused by manual operation; the automated process reduces the input of full-time manpower, saves maintenance costs, and standardizes the cleaning quality, thereby extending the service life of the universal wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the present invention in use;

[0023] Figure 2 This is a schematic diagram of the structure of the universal wheel of an office swivel chair;

[0024] Figure 3It is a structural schematic diagram of the present invention;

[0025] Figure 4 Schematic diagram of the internal structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the water storage chamber from the rear side perspective of the present invention;

[0027] Figure 6 It is a schematic diagram of the top view of the structure of the present invention;

[0028] Figure 7 When cleaning the universal wheel Figure 6 AA cross-sectional structural diagram;

[0029] Figure 8 This is a schematic diagram of the working principle structure of the nozzle when cleaning the universal wheel;

[0030] In the diagram: 1 - swivel chair, 2 - universal wheels, 3 - water storage chamber, 4 - water inlet, 5 - cleaning chamber, 6 - water pump chamber, 7 - air drying chamber; 8 - garbage collection chamber; 9 - motor box; 10 - motor; 11 - water pump; 12 - nozzle; 13 - drive roller; 14 - outer cleaning brush; 15 - inner cleaning brush; 16 - fan; 17 - air guide plate; 18 - vent; 19 - filter; 20 - drain pipe.

[0031] 2.1. Outer surface; 2.2. Inner surface. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the embodiments and the accompanying drawings.

[0033] like Figure 1-8 As shown, a cleaning device for the universal wheel of an office swivel chair has an overall rectangular parallelepiped structure, and its interior is divided into several functional chambers, including a water storage chamber 3, a cleaning chamber 5, two water pump chambers 6, and a garbage recovery chamber 8. The water storage chamber 3 is located at the rear side, the cleaning chamber 5 is located in the middle of the front side of the water storage chamber 3, the two water pump chambers 6 are respectively located on the left and right sides of the cleaning chamber 5, and the garbage recovery chamber 8 is located at the bottom of the water storage chamber 3, the cleaning chamber 5, and the two water pump chambers 6;

[0034] A sealed motor box 9 is provided in the middle of the bottom surface of the water storage chamber 3. Two motors 10 are fixed symmetrically in the motor box 9. A water inlet 4 is provided on the top surface of the water storage chamber 3. The water inlet 4 is connected to a water pipe.

[0035] Water pumps 11 are symmetrically installed in the two water pump chambers 6. The water inlet of the water pump 11 is connected to the water storage chamber 3. The water outlet of each water pump 11 is connected to two nozzles 12. The four nozzles 12 of the two water pump chambers 6 are respectively fixed on the left and right side walls of the cleaning chamber 5. The four nozzles 12 are all horizontally deflected at an angle θ=12°, so that the two nozzles 12 on one side are respectively directed towards the outer side surface 2.1 and the inner side surface 2.2 of one side of the universal wheel 2, and the two nozzles 12 on the other side are respectively directed towards the outer side surface 2.1 and the inner side surface 2.2 of the other side of the universal wheel 2;

[0036] The cleaning chamber 5 is provided with two driving rollers 13, two outer side cleaning brushes 14 and two inner side cleaning brushes 15, the two driving rollers 13 are arranged in parallel at the bottom of the left and right sides of the cleaning chamber 5, and one end of the two driving rollers 13 is connected to the output shafts of the two motors 10 respectively, the two outer side cleaning brushes 14 are symmetrically fixed in the middle of the front and rear side walls of the cleaning chamber 5, the two inner side cleaning brushes 15 are vertically fixed on the front and rear sides of the bottom of the cleaning chamber 5, and one side of the brush faces the outer side cleaning brush 14, an arc-shaped shaft hole is opened in the middle of the top of the inner side cleaning brush 15 for placing the axle of the universal wheel 2, the distance between the two inner side cleaning brushes 15 is smaller than the gap between the two wheels of the universal wheel 2, the distance between the driving roller 13 and the central axis of the outer side cleaning brush 14 is equal to the diameter of the universal wheel 2, and a drain outlet with a plug is provided on the bottom surface of the cleaning chamber 5;

[0037] When the universal wheel 2 is directly placed in the cleaning chamber 5 in a non-disassembly manner, the brush surfaces of the two outer cleaning brushes 14 are in contact with the outer side surface 2.1 of the universal wheel 2, and the brush surfaces of the two inner cleaning brushes 15 are in contact with the inner side surface 2.2 of the universal wheel 2, and the wheel edge of the universal wheel 2 is against the driving roller 13;

[0038] An air drying chamber 7 is further provided on the left and right sides of the washing chamber 5 and below the two water pump chambers 6. A vent 18 with a sealed door is provided on the partition between the washing chamber 5 and the air drying chamber 7. A fan 16 is horizontally provided in the air drying chamber 7. The sealed door of the vent 18 is linked to the fan 16 for control. After the cleaning is completed, the vent 18 is automatically opened and the fan 16 is started. An arc-shaped air guide plate 17 is provided at the vent 18 so that when the fan 16 rotates, the wind blown out is collected in the vent 18 through the air guide plate 17;

[0039] The garbage recovery chamber 8 is connected to the cleaning chamber 5 through a drain port. A drain pipe 20 is provided at the lower portion of the rear side wall of the garbage recovery chamber 8. A detachable filter screen 19 is provided at the entrance. The drain pipe 20 is connected to a sewage pool.

[0040] The motor 10 and the water pump 11 are externally connected to a power supply and a switch.

[0041] The deflection angle θ of the nozzle 12 may also be any value between 10° and 15°.

[0042] This embodiment uses 30 universal wheels of the same type of office swivel chair, divided into five groups: deflection angles of 0°, 10°, 12°, 15°, and 30°. Each group has 6 universal wheels for testing to determine the optimal spray angle.

[0043] The test results are shown in Table 1:

[0044] Deflection angle θ Internal and external surface cleaning rate Effective water flow coverage Sidewall splash loss rate 0° 58.2% 1.8mm 12% 10° 89.7% 3.5mm 5% 12° 95.3% 4.2mm 3% 15° 92.1% 3.8mm 4% 30° 76.4% 2.1mm 15%

[0045] From the experimental results in Table 1, it can be seen that when θ = 12°, the cleaning efficiency is the highest (95.3%), and the cleaning rate drops significantly when the angle is greater than 15° or the angle is less than 10°.

[0046] This embodiment conducts a cleaning test on a standard office swivel chair, and the types of dirt include dust, coffee stains, hair fibers, and mixed oil sludge;

[0047] The test conditions are as follows: The office swivel chairs in the three research groups' offices were divided into three groups, each with 30 chairs, and the cleaning was tracked for three months;

[0048] Fault judgment: abnormal rotation noise, jamming or wheel falling off.

[0049] Control group: Professional cleaners followed the standard process (disassembly → scrubbing → assembly);

[0050] Experimental group: Clean 30 universal wheels of the same specifications continuously and take the average value.

[0051] The test results are as follows:

[0052] Table 1 Comparison of cleaning efficiency results

[0053] Test indicators control group Experimental group Improvement effect Single round cleaning time 18.5±2.3 minutes 4.3±0.6 minutes 76.76% Batch processing (30 swivel chairs) 555 minutes 129 minutes 76.76% Number of operators 1 person / chair 1 person / 10 chairs Save 90% of manpower

[0054] Table 2 Comparison of surface cleaning rate results (endoscope + naked eye observation)

[0055] Test Area Residual rate of control group Residual rate of experimental group Improvement effect Outer side 12.7% 0.9% 92.9% inner side 34.5% (gap remaining) 1.2% 96.5%

[0056] The present invention works as follows:

[0057] Fill the water storage chamber 3 with water through the water filling port 4. When the universal wheels 2 of the office swivel chair 1 need to be cleaned, one of the universal wheels 2 is placed in the cleaning chamber 5. The axle of the universal wheel 2 is clamped on the arc-shaped shaft hole of the inner side cleaning brush 15. The brush surface of the inner side cleaning brush 15 is in close contact with the two inner side surfaces 2.2 of the universal wheel 2, and the outer side cleaning brush 14 is in close contact with the two outer side surfaces 2.1 of the universal wheel 2. The rim of the universal wheel 2 is tightly pressed against the driving roller 13 under the overall gravity of the office swivel chair 1.

[0058] After the preparation is completed, unplug the drain port at the bottom of the cleaning chamber 5, and then turn on the water pump 11. The water in the water storage chamber 3 is sprayed to each surface of the universal wheel 2 through the four nozzles 12 through the water pump 11;

[0059] The motor 10 is turned on to drive the driving roller 13 to rotate. The driving roller 13 drives the wheel of the universal wheel 2 to rotate, so that the brush surface of the inner side cleaning brush 15 rubs against the inner side surface 2.2, and the outer side cleaning brush 14 rubs against the outer side surface 2.1. At the same time, the four nozzles 12 spray water onto the two inner sides 2.2 and the two outer sides 2.1 respectively, so as to clean the inner and outer sides of the universal wheel 2 simultaneously. The rim of the universal wheel 2 is also cleaned at the same time under the action of the driving roller 13. The sewage generated during the cleaning process and the dirt cleaned are discharged into the garbage collection chamber 8 through the drain outlet;

[0060] After cleaning is completed, the motor 10 is turned off first, and then the water pump 11 is turned off. The sewage in the garbage collection chamber 8 is filtered by the filter 19 and discharged into the sewage pool through the drain pipe 20;

[0061] After cleaning is completed, the vents 18 on both sides of the cleaning chamber 5 are opened, and the fan 16 is turned on. The wind blown by the fan passes through the air guide plate 17 and is collected through the vents 18 to dry the parts in the cleaning chamber 5. After drying, the sealing door of the vents 18 and the fan 16 are closed;

[0062] After a period of cleaning, the dirt that has been filtered and precipitated in the garbage recovery chamber 8 accumulates more. At this time, the garbage recovery chamber 8 is opened by the handle, the filter 19 is removed, the dirt inside is cleaned, and then the garbage recovery chamber 8 is installed and closed.

[0063] After cleaning one universal wheel 2 of the office swivel chair 1, rotate the swivel chair chassis, switch to another universal wheel 2 for cleaning, and repeat the above steps.

Claims

1. A cleaning device for the universal wheel of an office swivel chair, characterized in that: The device is a rectangular parallelepiped structure, and is internally divided into several functional chambers, including a water storage chamber (3), a cleaning chamber (5), two water pump chambers (6) and a garbage recovery chamber (8). The water storage chamber (3) is located at the rear side, the cleaning chamber (5) is located in the middle of the front side of the water storage chamber (3), the two water pump chambers (6) are respectively located on the left and right sides of the cleaning chamber (5), and the garbage recovery chamber (8) is located at the bottom of the water storage chamber (3), the cleaning chamber (5) and the two water pump chambers (6). A sealed motor box (9) is provided in the middle of the bottom surface of the water storage chamber (3), and two motors (10) are fixedly provided in the motor box (9) symmetrically on the left and right. A water inlet (4) is provided on the top surface of the water storage chamber (3), and the water inlet (4) is connected to an external water pipe. Water pumps (11) are symmetrically installed in the two water pump chambers (6), the water inlets of the water pumps (11) are connected to the water storage chamber (3), and the water outlets of each water pump (11) are connected to two nozzles (12). The four nozzles (12) of the two water pump chambers (6) are respectively fixed on the left and right side walls of the cleaning chamber (5); The cleaning chamber (5) is provided with two driving rollers (13), two outer side cleaning brushes (14) and two inner side cleaning brushes (15), the two driving rollers (13) are arranged in parallel at the bottom of the left and right sides of the cleaning chamber (5), and one end of the two driving rollers (13) is connected to the output shafts of the two motors (10), the two outer side cleaning brushes (14) are symmetrically fixed in the middle of the front and rear side walls of the cleaning chamber (5), the two inner side cleaning brushes (15) are vertically fixed on the front and rear sides of the bottom of the cleaning chamber (5), and their brushes face the outer side cleaning brushes (14), an arc-shaped shaft hole is opened in the middle of the top of the inner side cleaning brush (15) for accommodating the wheel axle of the universal wheel (2), the distance between the two inner side cleaning brushes (15) is smaller than the gap between the two wheels of the universal wheel (2), the distance between the driving roller (13) and the central axis of the outer side cleaning brush (14) is equal to the diameter of the universal wheel (2), and a drain outlet with a plug is provided on the bottom surface of the cleaning chamber (5); When the universal wheel (2) is directly placed in the cleaning chamber (5) in a non-disassembly manner, the brush surfaces of the two outer cleaning brushes (14) are in contact with the outer side surface (2.1) of the universal wheel (2), and the brush surfaces of the two inner cleaning brushes (15) are in contact with the inner side surface (2.2) of the universal wheel (2), and the wheel edge of the universal wheel (2) is pressed against the driving roller (13); The garbage recovery chamber (8) is connected to the cleaning chamber (5) through a drain port. A drain pipe (20) is provided at the lower portion of the rear side wall of the garbage recovery chamber (8), and the drain pipe (20) is externally connected to a sewage tank. The motor (10) and the water pump (11) are externally connected to a power supply and a switch.

2. A cleaning device for universal wheels of office swivel chairs according to claim 1, characterized in that: The four nozzles (12) are all horizontally deflected at an angle θ, so that the two nozzles (12) on one side respectively face the outer side surface (2.1) and the inner side surface (2.2) on one side of the universal wheel (2), and the two nozzles (12) on the other side respectively face the outer side surface (2.1) and the inner side surface (2.2) on the other side of the universal wheel (2).

3. A cleaning device for universal wheels of office swivel chairs according to claim 2, characterized in that: The deflection angle θ of the nozzle (12) is 10-15°.

4. The cleaning device for the universal wheel of an office swivel chair according to claim 1, characterized in that: An air drying chamber (7) is provided on the left and right sides of the cleaning chamber (5) and below the two water pump chambers (6). A vent (18) with a sealed door is provided on the partition between the cleaning chamber (5) and the air drying chamber (7). A fan (16) is provided horizontally in the air drying chamber (7). The sealed door of the vent (18) is linked to the fan (16) for control. After cleaning is completed, the vent (18) is automatically opened and the fan (16) is started. An arc-shaped air guide plate (17) is provided at the vent (18), so that when the fan (16) rotates, the blown air is collected at the vent (18) through the air guide plate (17).

5. The cleaning device for the universal wheel of an office swivel chair according to claim 1, characterized in that: A detachable filter screen (19) is provided at the inlet of the drainage pipe (20) of the garbage recycling chamber (8).

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