Dust cup arrangement for a vacuum cleaner

Abstract

The utility model relates to a dust cup device for vacuum cleaner, include: dust cup, define dust collecting chamber, cover subassembly can be removed to the upper portion of dust cup and be installed on the upper portion of dust cup upwards relative to dust cup, cover subassembly defines the airflow channel to the outside of dust collecting chamber, scrape ash subassembly can be removed to the inner wall surface of the upper portion of dust cup upwards and be located the downside of cover subassembly, scrape ash subassembly presents ring and includes the fixed seat for with the inner wall surface of the upper portion of dust cup joint and scrape ash spare installed on fixed seat, and filter subassembly, be located in dust collecting chamber and be used for filtering the airflow from dust collecting chamber to airflow channel, filter subassembly is located the inside of scrape ash subassembly and includes filter screen and the filter screen support of support filter screen, filter screen support has the bottom end portion of outer diameter greater than filter screen outer diameter and fixed seat inner diameter, filter subassembly is connected on cover subassembly, to can follow cover subassembly together upwards relative to dust cup and remove. The case has realized the work of scraping dust on filter screen in taking out filter subassembly process simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, and in particular to a dust cup device for a vacuum cleaner. Background Technology

[0002] Vacuum cleaners are indispensable cleaning equipment in modern homes and commercial environments. Their core working principle involves a motor driving a high-speed airflow that draws dirty air containing dust and debris into a dust cup inside the machine. Inside the dust cup, there is usually a filter assembly with a screen. The core function of this filter is to achieve air-solid separation, allowing air to pass through while trapping and collecting solid particles such as dust and debris in the dust cup. This prevents particles from entering the motor and causing damage or secondary pollution of the environment with the exhaust.

[0003] However, during this gas-solid separation process, the mesh on the filter surface is easily clogged by fine dust, hair, or fibrous debris. As the clogging worsens, the effective area of ​​the vacuum cleaner's airflow channel decreases, leading to a significant increase in airflow resistance. This directly causes the vacuum cleaner's suction power to rapidly decline, resulting in lower cleaning efficiency; moreover, it forces the vacuum motor to operate at high load for extended periods to maintain suction power, which not only increases noise but also shortens the motor's lifespan.

[0004] To address the aforementioned filter clogging issue, existing solutions rely on manual cleaning by the user. For example, when a user notices a significant decrease in suction power, they first stop the machine, remove the filter assembly from the dust cup, and then attempt to remove the blockages adhering to the filter surface by tapping, brushing, or rinsing with water. These methods are extremely inconvenient and provide a poor user experience. Utility Model Content

[0005] To address the aforementioned problems, the purpose of this invention is to provide a dust cup device solution that allows for convenient and efficient removal of filter blockages without frequent disassembly or direct contact with dirty parts. This dust cup device is used in vacuum cleaners and can significantly improve the continuous working efficiency of the vacuum cleaner, extend the life of components, and fundamentally improve the user experience.

[0006] Therefore, this utility model provides a dust cup device for a vacuum cleaner, comprising: a dust cup, cylindrical in shape and defining a dust collection chamber with an air inlet; a cover assembly, removably mounted on the upper part of the dust cup relative to the dust cup, the cover assembly defining an airflow passage leading to the exterior of the dust collection chamber; a scraper assembly, removably engaged with the inner wall surface of the upper part of the dust cup and located below the cover assembly, the scraper assembly being annular and including a fixing seat for engaging with the inner wall surface of the upper part of the dust cup and a scraper mounted on the fixing seat; and a filter assembly, located in the dust collection chamber and used to filter the airflow flowing from the dust collection chamber to the airflow passage, the filter assembly being located inside the scraper assembly and including a filter screen and a filter screen support supporting the filter screen, the filter screen support having a bottom end, the outer diameter of the bottom end being larger than the outer diameter of the filter screen and the outer diameter of the filter screen. The inner diameter of the fixing base; the filter assembly is connected to the cover assembly so as to move upward relative to the dust cup from a first position to a second position, from the second position to a third position, and from the third position to a fourth position, together with the cover assembly; in the first position, the filter assembly is located in the dust collection chamber, and the scraper is located above the filter screen; in the second position, at least a portion of the filter assembly is located in the dust collection chamber, the scraper contacts the filter screen, and the bottom end is located below and away from the scraper assembly; in the third position, a portion of the filter assembly is located in the dust collection chamber, and the bottom end abuts against the fixing base from below; in the fourth position, the filter assembly is removed from the dust collection chamber, and the scraper assembly is sleeved on the outside of the filter assembly and supported at the bottom end.

[0007] In some embodiments, a limiting protrusion is provided on the inner wall surface of the upper part of the dust cup, and a limiting groove is provided on the outer peripheral surface of the fixing seat to cooperate with the limiting protrusion; when the dust scraping assembly is engaged with the inner wall surface of the dust cup, the limiting protrusion is located in the limiting groove.

[0008] In some embodiments, the cover assembly engages with the mounting base when the cover assembly is mounted on the upper part of the dust cup and the dust scraper assembly is engaged with the inner wall surface of the upper part of the dust cup.

[0009] In some embodiments, a plurality of snap-fit ​​structures are provided between the cover assembly and the fixing base.

[0010] In some embodiments, when the cover assembly is mounted on the upper part of the dust cup, the cover assembly is located inside the dust cup and the top surface of the cover assembly is flush with the top surface of the dust cup.

[0011] In some embodiments, the cover assembly includes a cover support, a handle rotatably mounted on the cover support in a folded position and an unfolded position, and a sealing ring supported on the cover support. The sealing ring abuts against the inner wall of the dust cup. The handle is provided with a pair of abutment portions capable of contacting the upper part of the dust cup. The pair of abutment portions are configured to transmit the force applied by the user to the handle from the folded position to the unfolded position to the upper part of the dust cup, causing the dust cup to displace downward relative to the cover assembly.

[0012] In some embodiments, the upper part of the dust cup is provided with a pair of notches, and the pair of abutting portions engage with the pair of notches.

[0013] In some embodiments, the handle is rotatably supported on the cover bracket via a pair of pivots, the handle having a grip portion, and the pair of abutment portions and the grip portion being located on opposite sides of the pair of pivots.

[0014] In some embodiments, the air inlet is located at the lower part, and the air inlet is provided with a one-way valve that can rotate between an open position and a closed position.

[0015] In some embodiments, a biasing spring is provided between the one-way valve and the lower part of the dust cup, the biasing spring being configured to provide a biasing force to hold the one-way valve in the closed position.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: the cover assembly, the dust scraping assembly, and the filter assembly in the dust cup device of this application can be removed as a whole, making it convenient for users to perform deep cleaning or replacement; and when the user moves the cover assembly upward, the filter assembly can be removed and the dust on the filter screen can be scraped off at the same time, so that the user no longer needs to manually knock, wipe or touch the dirty filter screen; which effectively improves the user experience. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a vacuum cleaner according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a dust cup device according to an embodiment of this application; Figure 3 for Figure 2 Schematic cross-sectional view along the AA direction; Figure 4 for Figure 3 A schematic diagram showing the dust cup device's handle rotated to the unfolded position; Figure 5 This is a cross-sectional schematic diagram of a scraping component according to an embodiment of this application; Figure 6 for Figure 2 A schematic diagram of the dust cup device after dust removal; Figure 7 for Figure 6 Cross-sectional view along the BB direction; Figure 8 for Figure 2 Cross-sectional view along the CC direction; Figure 9 for Figure 8 An enlarged view at point D; Figure 10 for Figure 4 A cross-sectional view of the dust cup device when the filter component moves upward to the second position; Figure 11 for Figure 10 A cross-sectional view of the dust cup device when the filter component moves upward to the third position; Figure 12 for Figure 11 A cross-sectional view of the dust cup device when the filter component moves upward to the fourth position. Detailed Implementation

[0018] This application relates to a dust cup device for a vacuum cleaner, which can be used to intercept and store dust and debris from a dust-laden airflow. The dust cup device is typically detachably mounted on the body of the vacuum cleaner, allowing the user to empty the dust from the cup after removing it from the body.

[0019] See Figure 1 The illustration shows a stick vacuum cleaner 100 according to this application. The lower part of the vacuum cleaner 100 has a cleaning head 1 that contacts the ground. This cleaning head 1 is equipped with a suction nozzle 2 and a support plate 3 for detachably attaching a cleaning cloth. This stick vacuum cleaner can both vacuum and wipe floors. The upper part of the vacuum cleaner 100 has a dust cup device 4, a suction motor 5, and a handle assembly 6. The dust cup device 4 is detachable.

[0020] See Figure 2 , Figure 3 The diagram illustrates the specific structure of the dust cup device 4. In this embodiment, the dust cup device 4 is a cylindrical component. The dust cup device 4 mainly includes a dust cup 41, a cover assembly 42, a dust scraping assembly 43, and a filter assembly 44.

[0021] The dust cup 41 is cylindrical and has an upper part 411 and a lower part 412. The dust cup 41 defines a dust collection chamber 410 with an air inlet 4101. Dust-laden airflow can enter the dust collection chamber 410 through the air inlet 4101 and undergo gas-solid separation in the dust collection chamber 410. The separated air is discharged to the outside of the dust collection chamber 410. In this example, the air inlet 4101 is located at the lower part 412 of the dust cup 41, and a one-way valve 413 is disposed at the air inlet 4101 that can rotate between an open position and a closed position. A biasing spring (not shown) is also provided between the one-way valve 413 and the lower part of the dust cup 41. The biasing spring is configured to provide a biasing force to hold the one-way valve 413 in the closed position of the air inlet 4101. In addition, the one-way valve 413 is also configured to be able to overcome the bias force and rotate to the open position of opening the air inlet 4101 under the suction action of the suction motor 5, and return to the closed position under the bias force of the bias spring after the suction action of the suction motor 5 is removed.

[0022] The cover assembly 42 is removably mounted on the upper portion 411 of the dust cup 41 relative to the dust cup 41. The cover assembly 42 defines an airflow passage 420 leading to the outside of the dust collection chamber 410. In this example, when the cover assembly 42 is mounted on the upper portion 411 of the dust cup 41, the cover assembly 42 is located inside the dust cup 41 and the top surface of the cover assembly 42 is flush with the top surface of the dust cup 41; that is, the cover assembly 42 acts like a "plug" and can be inserted into the upper portion 411 of the dust cup 41, sealing the dust collection chamber 410; the air inside the dust collection chamber 410 flows to the outside through the airflow passage 420.

[0023] See Figure 3 and Figure 4 The cover assembly 42 includes a cover bracket 421, a handle 422 rotatably mounted on the cover bracket 421 in a folded and unfolded position, and a sealing ring 423 supported on the cover bracket 421. The sealing ring 423 can abut against the inner wall surface of the upper part 411 of the dust cup 41 to seal the dust collection chamber 410.

[0024] The handle 422 is rotatably supported on the cover bracket 421 via a pair of pivots 424. The handle 422 is provided with a gripping portion 4221 and a pair of abutting portions 4222, which are located on opposite sides of the pivots 424. The abutting portions 4222 can contact the upper part 410 of the dust cup 41. In this example, the upper part 410 of the dust cup 41 is provided with a pair of notches 414, and the abutting portions 4222 engage with the notches 414 respectively.

[0025] When the user applies force to the handle 422 via the grip 4221, it moves it from the folded position ( Figure 3 Location) Go to expanded location ( Figure 4When the force is applied to the dust cup 41, a pair of abutting parts 4222 will transfer this force to the upper part 411 of the dust cup 41 and cause the dust cup 41 to move downward relative to the cover assembly 42. This structure, by rotating the handle 422, causes the cover assembly 42 and the dust cup 41 to move relative to each other, thereby helping the user reduce the force required to remove the cover assembly 42 upward, that is, the user can remove the cover assembly 42 from the upper part 411 of the dust cup 41 with less effort.

[0026] See Figure 3 , Figure 4 and Figure 5 As shown, the dust scraper assembly 43 is removably engaged upwards to the inner wall of the upper portion 411 of the dust cup 41. The dust scraper assembly 43 is located below the cover assembly 42. The dust scraper assembly 43 is annular and includes a mounting base 431 for engaging with the inner wall of the upper portion 411 of the dust cup 41, and a scraper element 432 mounted on the mounting base 431. The mounting base 431 is typically a plastic component, and the scraper element 432 is a soft component such as a flexible scraper or bristles.

[0027] See Figure 6 , Figure 7 As shown, when the cover assembly 42 is installed on the upper part 411 of the dust cup 41 and the scraper assembly 43 is engaged with the inner wall surface of the upper part 411 of the dust cup 41, the cover assembly 42 engages with the fixing seat 431 of the scraper assembly 43. Several snap-fit ​​structures 45 exist between the cover assembly 42 and the fixing seat 431. It should be noted that when the cover assembly 42 moves upward relative to the dust cup 41, the cover assembly 42 automatically separates from the fixing seat 431 of the scraper assembly 43; these snap-fit ​​structures 45 must be designed to achieve the effect of automatic separation.

[0028] See Figure 8 , Figure 9 As shown, a limiting protrusion 461 is provided on the inner wall surface of the upper part 411 of the dust cup 410. A limiting groove 462 that mates with the limiting protrusion 461 is provided on the outer peripheral surface of the fixing seat 431. When the dust scraping assembly 43 is engaged with the inner wall surface of the upper part 411 of the dust cup 41, the limiting protrusion 461 is located in the limiting groove 462. The engagement between the limiting protrusion 461 and the limiting groove 462 helps to keep the dust scraping assembly 43 at the inner wall surface of the upper part 411 of the dust cup 410.

[0029] See also Figure 3The filter assembly 44 is located in the dust collection chamber 410 and is used to filter the airflow flowing from the dust collection chamber 410 to the airflow channel 420. The filter assembly 44 is located inside the dust scraping assembly 43. The filter assembly 44 includes a filter screen 441 and a filter screen support 442 supporting the filter screen 441. The filter screen support 442 has a top portion 4421 and a bottom portion 4422, with the filter screen 441 located between the top portion 4421 and the bottom portion 4422. In this example, the outer diameter of the top portion 4421 is approximately the same as the outer diameter of the filter screen 441, and the outer diameter of the bottom portion 4422 is larger than the outer diameter of the filter screen 441. The outer diameter of the bottom portion 4422 is also larger than the inner diameter of the mounting base 431.

[0030] Combination Figure 10 , Figure 11 and Figure 12 As shown, the filter assembly 44 is connected to the cover assembly 42 so that it can move with the cover assembly 42 relative to the dust cup 41 from a first position ( Figure 3 Move the position (currently in) upwards to the second position ( Figure 4 , Figure 10 The current position), moving upwards from the second position to the third position ( Figure 11 The position of the middle) and moving from the third position to the fourth position ( Figure 12 (Location within).

[0031] like Figure 3 As shown, in the first position, the filter assembly 44 is completely located in the dust collection chamber 410, and the scraper 432 is located above the filter screen 441 and contacts the top end 4421 of the filter screen support 442.

[0032] like Figure 4 , Figure 10 As shown, in the second position, the filter assembly 44 or part of the filter assembly 44 is located in the dust collection chamber 410, the scraper 432 contacts the filter screen 441, and the bottom end 4422 of the filter screen support 442 is located below the scraper assembly 43 and away from the scraper assembly 43.

[0033] like Figure 11 As shown, when the filter assembly 44 is in the third position, part of the filter assembly 44 is still located in the dust collection chamber 410, and the bottom end 4222 of the filter support 442 abuts against the fixing seat 431 from the lower side of the fixing seat 431.

[0034] like Figure 12 As shown, when the filter assembly 44 is in the fourth position, the filter assembly 44 leaves the dust collection chamber 410, and the dust scraping assembly 43 is sleeved on the outside of the filter assembly 44 and supported at the bottom end 4422.

[0035] Thus, as the filter assembly 44 moves upward relative to the dust cup 41 from the first position to the second position along with the cover assembly 42, the scraper assembly 43 remains on the inner wall of the upper part 411 of the dust cup 41. The filter screen 441 moves upward relative to the scraper 432 and contacts the scraper 432. The scraper 432 scrapes along the surface of the filter screen 441 to remove accumulated debris from the outer surface of the filter screen 441. This debris will fall into the lower part of the dust collection chamber 410. Therefore, the filter assembly 44 completes the wiping of the filter screen 441 as it moves upward relative to the cover assembly 42 from the first position to the second position.

[0036] As the filter assembly 44 moves upward relative to the dust cup 41 from the second position to the third position along with the cover assembly 42, the bottom end 4222 of the filter support 442 will abut against the underside of the mounting base 431.

[0037] As the filter assembly 44 moves upward from the third position to the fourth position relative to the dust cup 41 along with the cover assembly 42, since the outer diameter of the bottom end 4222 is larger than the inner diameter of the fixing seat 431, the bottom end 4222 cannot escape from the inside of the fixing seat 431. The bottom end 4222 will push the dust scraper assembly 43 to move upward together, thereby achieving separation from the dust cup 41 along with the cover assembly 42.

[0038] Afterwards, the cover assembly 42, the scraper assembly 43, and the filter assembly 44 can be reattached to the dust cup 41. After the assembly is completed, the groove 462 on the fixing seat 431 of the scraper assembly 43 will engage with the limiting protrusion 461 on the dust cup 41, the cover assembly 42 will seal the upper part 411 of the dust cup 41, the handle 422 will be rotated to the folded position, and the filter assembly 44 will return to the first position to continue using the dust cup device 4.

[0039] The dust collection device in this case intelligently and efficiently integrates the user action of "removing the filter assembly" with the maintenance function of "automatic filter cleaning." Through a mechanically linked design of the cover assembly, filter assembly, and dust scraping assembly, it achieves a contactless, automated, and mess-free filter cleaning experience. Specifically, during automatic filter cleaning, the user only needs to "lift the cover assembly upwards" to simultaneously complete the two operations of "removing the filter assembly" and "scraping dust off the filter." The dust scraped off the filter remains in the dust collection chamber inside the dust cup, ensuring cleanliness and hygiene.

[0040] The above embodiments are merely illustrative examples, and those skilled in the art can make equivalent substitutions or improvements within the scope of the claims. Other embodiments, besides the exemplary embodiments shown and described herein, are also covered within the scope of this invention.

Claims

1. A dust cup device for a vacuum cleaner, characterized in that, The dust cup device includes: Dust cup, cylindrical in shape and defining a dust collection chamber with an air inlet; A cover assembly is removably mounted on the upper part of the dust cup relative to the dust cup, and the cover assembly defines an airflow passage to the outside of the dust collection chamber; A dust scraper assembly, removably engaged upwards with the inner wall surface of the upper part of the dust cup and located below the cover assembly, the dust scraper assembly being annular and including a mounting base for engaging with the inner wall surface of the upper part of the dust cup and a scraper element mounted on the mounting base; and A filter assembly, located in the dust collection chamber and used to filter the airflow from the dust collection chamber to the airflow channel, is located inside the dust scraper assembly and includes a filter screen and a filter screen support supporting the filter screen. The filter screen support has a bottom end, the outer diameter of which is larger than the outer diameter of the filter screen and the inner diameter of the fixing base. The filter assembly is connected to the cover assembly so that it can move upward relative to the dust cup from a first position to a second position, from the second position to a third position, and from the third position to a fourth position, along with the cover assembly. In the first position, the filter assembly is located in the dust collection chamber, and the scraper is located above the filter screen; in the second position, at least a portion of the filter assembly is located in the dust collection chamber, the scraper contacts the filter screen, and the bottom end is located below and away from the scraper assembly; in the third position, a portion of the filter assembly is located in the dust collection chamber, and the bottom end abuts against the fixing base from below; in the fourth position, the filter assembly is removed from the dust collection chamber, and the scraper assembly is sleeved on the outside of the filter assembly and supported at the bottom end.

2. The dust cup device according to claim 1, characterized in that, A limiting protrusion is provided on the inner wall surface of the upper part of the dust cup, and a limiting groove is provided on the outer peripheral surface of the fixing seat to cooperate with the limiting protrusion; when the dust scraping component is engaged with the inner wall surface of the dust cup, the limiting protrusion is located in the limiting groove.

3. The dust cup device according to claim 1, characterized in that, When the cover assembly is installed on the upper part of the dust cup and the dust scraper assembly is engaged with the inner wall surface of the upper part of the dust cup, the cover assembly engages with the fixing seat.

4. The dust cup device according to claim 3, characterized in that, Several snap-fit ​​structures are provided between the cover assembly and the fixing base.

5. The dust cup device according to claim 3, characterized in that, When the cover assembly is installed on the upper part of the dust cup, the cover assembly is located inside the dust cup and the top surface of the cover assembly is flush with the top surface of the dust cup.

6. The dust cup device according to claim 1, characterized in that, The cover assembly includes a cover bracket, a handle rotatably mounted on the cover bracket in a folded and unfolded position, and a sealing ring supported on the cover bracket. The sealing ring abuts against the inner wall of the dust cup. The handle is provided with a pair of abutment portions that can contact the upper part of the dust cup. The pair of abutment portions are configured to transmit the force applied by the user to the handle from the folded position to the unfolded position to the upper part of the dust cup, causing the dust cup to displace downward relative to the cover assembly.

7. The dust cup device according to claim 6, characterized in that, The upper part of the dust cup is provided with a pair of notches, and the pair of abutting parts are engaged with the pair of notches.

8. The dust cup device according to claim 6, characterized in that, The handle is rotatably supported on the cover bracket via a pair of pivots. The handle has a grip portion, and the pair of abutment portions and the grip portion are located on opposite sides of the pair of pivots.

9. The dust cup device according to claim 1, characterized in that, The air inlet is located at the lower part, and a one-way valve is provided at the air inlet that can rotate between an open position and a closed position.

10. The dust cup device according to claim 9, characterized in that, A biasing spring is provided between the one-way valve and the lower part of the dust cup. The biasing spring is configured to provide a biasing force to keep the one-way valve in the closed position.

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