Floor brush arrangement for a vacuum cleaner

Abstract

The utility model relates to a ground brush device for vacuum cleaner, include: casing, have lower cover, be equipped with first, second opening on the lower cover, roll brush, roll brush pressure plate, can be rotatably installed in the first opening and be located the downside of roll brush in the closed position and completely open position, and roll brush pressure plate has the first end part of hinge joint with lower cover and the second end part releasably engaged in lower cover, locking mechanism, be movably arranged on lower cover between the locking position of locking second end part at lower cover and the release position of releasing second end part from lower cover, locking mechanism has the sliding release button that can be operated by hand forward and backward sliding, part sliding release button exposes from second opening, and sealing structure is configured for sealing the gap between the sliding release button and part lower cover that defines second opening. The case can effectively prevent sand and other pollutants from invading by setting sealing structure, and improve locking mechanism reliability and durability.

Description

Technical Field

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

[0002] Vacuum cleaners, as a common household cleaning appliance, typically feature a roller brush in their floor brush section. This roller brush rubs against the floor as it rolls, removing dust and debris. For easy cleaning and replacement of the roller brush, the bottom of the floor brush housing has a chamber to house it, and is equipped with an openable / closable roller brush plate. This plate is usually secured in the closed position by a locking mechanism to ensure stable operation of the roller brush.

[0003] Currently, common roller brush plate locking mechanisms include a sliding button located on the bottom housing of the floor brush. By sliding this button, the user can disengage the locking mechanism (such as a hook or latch) from the mating part on the roller brush plate, thus unlocking the brush and allowing the plate to be lifted for removal. However, this design has a significant drawback: because the sliding button is inevitably located on the bottom housing of the floor brush, its operating surface directly faces the surface to be cleaned. In actual use, the bottom of the floor brush continuously rubs against the ground and is exposed to a harsh environment filled with fine particles such as dust, sand, and hair. These particles, especially hard sand, can easily penetrate the locking mechanism through the gap between the sliding button and the housing. These intruding particles accumulate in the sliding button's track or become stuck in the movement path of the locking component, increasing sliding resistance and hindering operation. In severe cases, sand particles can completely obstruct the sliding button's movement or prevent the hook from disengaging properly, causing the locking function to fail and preventing the user from easily opening the roller brush plate for maintenance.

[0004] Therefore, while the existing sliding button locking solution facing the ground is straightforward to operate, its special working environment makes it susceptible to contaminant intrusion, leading to operational malfunctions, locking failures, and low reliability. Improvements are urgently needed. Utility Model Content

[0005] In order to solve the problems mentioned above, the purpose of this utility model is to provide a floor brush device that can effectively improve the reliability and durability of the locking mechanism.

[0006] Therefore, this application provides a floor brush device for a vacuum cleaner, comprising: a housing defining a roller brush cavity, the housing having a lower cover facing the floor to be cleaned, the lower cover having a first opening directly below the roller brush cavity and a second opening away from the first opening; a roller brush rotatably disposed in the roller brush cavity; a roller brush pressure plate rotatably mounted at the first opening and located below the roller brush in a closed position and a fully open position, the roller brush pressure plate having a first end hinged to the lower cover and a second end releasably engaged with the lower cover; and a locking mechanism capable of locking the second end in a locked position at the lower cover and releasing the second end from the lower cover. The upper release position is movably disposed on the lower cover, the locking mechanism having a sliding release button that can be operated by hand to slide back and forth, a portion of the sliding release button protruding from the second opening; and a sealing structure configured to seal the gap between the sliding release button and the portion of the lower cover defining the second opening, the sealing structure being arranged along the opening of the second opening and disposed on the inner surface of the lower cover, the sealing structure including a soft rubber component and a hard film component adhered to the soft rubber component, the soft rubber component being adhered to the inner surface of the lower cover, the sliding release button abutting against the hard film component and sliding along the hard film component when sliding back and forth.

[0007] In some embodiments, the sliding release button is provided with an annular rib that matches the shape of the second opening, and the annular rib abuts against the rigid film component.

[0008] In some embodiments, the rigid film component is a PET rigid film component.

[0009] In some embodiments, the sliding release button is provided with a locking hook portion, and the second end is provided with a groove; when the locking mechanism is in the locked position, the locking hook portion engages with the groove. In some embodiments, a spring is provided between the sliding release button and the lower cover.

[0010] In some embodiments, the second opening is located behind the first opening.

[0011] Compared with the prior art, the beneficial effects of this application are as follows: by setting a sealing structure in the gap between the sliding release button and the lower cover that defines the second opening, it can effectively prevent contaminants such as sand from entering; and since the sliding release button slides on a hard film component, the resistance is small and the operation of the sliding release button itself is not affected; it can improve the reliability and durability of the locking mechanism without affecting the user's use. Attached Figure Description

[0012] Figure 1 This is a side view schematic diagram of a floor brush device according to the present invention; Figure 2 for Figure 1 A diagram showing the vacuum brush in the picture taken from below; Figure 3 for Figure 2 Cross-sectional view along the AA direction; Figure 4 for Figure 3 Enlarged view of point B in the middle; Figure 5 for Figure 2 A schematic diagram showing the brush plate being opened. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0014] See Figures 1 to 5 A preferred embodiment of this utility model provides a floor brush device 100 for a vacuum cleaner. This floor brush device 100 solves the problem of locking failure caused by sand intrusion in the prior art by improving the dustproof sealing performance of the locking mechanism 6.

[0015] The floor brush device 100 mainly includes a housing 1, roller brushes 2 arranged side by side, and roller brush pressure plates 3. The housing 1 consists of a lower cover 11 and an upper cover 12, which together form a roller brush cavity 10. The lower cover 11 has a first opening 111 and a second opening 112. The first opening 111 is located directly below the roller brush cavity 11. The roller brush 2 is rotatably mounted in the roller brush cavity 10, and its bristles are exposed through the first opening 111, directly contacting the ground for cleaning. The second opening 112 is located away from the first opening 111. Preferably, in this embodiment, the second opening 112 is located behind the first opening 111.

[0016] The roller brush pressure plate 3 is rotatably mounted on the first opening 111 via a hinge and is located below the roller brush 2. After the roller brush pressure plate 3 is opened, the user can remove the roller brush 2 from the roller brush cavity 10 for cleaning or replacement.

[0017] The roller brush plate 3 has a front end 31 and a rear end 32. The front end 31 is hinged to the lower cover 11, allowing the roller brush plate 3 to open and close like a door. The rear end 32 is releasably engaged with the lower cover 11 by a locking mechanism 4. When the roller brush plate 3 is in the closed position (e.g., Figure 2 , Figure 3 As shown), it closes the roller brush 2 inside the roller brush cavity 10. When it is necessary to clean tangled hair or replace the roller brush, the roller brush pressure plate 3 can be unlocked and lifted (as shown). Figure 5 (As shown).

[0018] The locking mechanism 4 is mounted on the lower cover 11 and can move between a locked position and a released position. In the locked position, it locks the rear end 32 of the roller brush plate 3 onto the lower cover 11; in the released position, it releases the rear end 32 of the roller brush plate 3, allowing the roller brush plate 3 to be opened.

[0019] The locking mechanism 4 mainly includes a slide release button 41 that can be operated by sliding it back and forth with a hand. Part of the slide release button 41 protrudes from the second opening 112 on the lower cover 11 so that the user can operate it with his / her finger.

[0020] like Figure 4 As shown, a sealing structure 5 is provided between the locking mechanism 4 and the lower cover 11 to seal the gap between the sliding release button 41 and the portion of the lower cover 11 that defines the second opening 112. This design fundamentally prevents fine contaminants such as sand particles from the ground from entering the interior of the locking mechanism 4 through the gap, thereby avoiding the sliding release button 41 from getting stuck and malfunctioning.

[0021] The sealing structure 5 is arranged along the opening of the second opening 112 and on the inner surface of the lower cover 11 (i.e., the side facing away from the ground). This "inner sealing" method prevents the seal from directly contacting the ground, avoiding wear and effectively utilizing the internal space.

[0022] The sealing structure 5 includes a soft rubber component 51 and a rigid film component 52. The soft rubber component 51 is fixedly bonded to the inner surface of the lower cover 11 by means of adhesive bonding, interference fit, or integral overmolding. The rigid film component 52 is bonded to the soft rubber component 51. The inner part of the sliding release button 41 abuts against the rigid film component 52 and slides smoothly along the surface of the rigid film component 52 when the user slides it back and forth.

[0023] In a preferred embodiment, the rigid film component 52 is a PET (polyethylene terephthalate) rigid film component. PET film has the advantages of smooth surface, wear resistance, high hardness and low coefficient of friction, which can effectively seal and ensure smooth operation of the sliding release button 41.

[0024] To further enhance the sealing effect, an annular rib 411 matching the shape of the second opening 112 is provided on the sliding release button 41. Once assembled, the annular rib 411 always abuts against the inner surface of the rigid diaphragm component 52. This design reduces the sliding interface from the entire side of the sliding button to the precise annular rib 411, increasing contact pressure and improving sealing reliability. Simultaneously, the reduced contact area also lowers sliding friction.

[0025] Regarding the specific coordination methods of locking and releasing, such as Figure 3 and Figure 4 As shown, the sliding release button 41 is provided with a locking hook part 412, and a corresponding groove 33 is provided on the rear end 32 of the roller brush plate 3. When the locking mechanism 4 is in the locked position, the locking hook part 412 is precisely engaged in the groove 33, thereby achieving mechanical locking. When the user slides the sliding release button 41 backward, the locking hook part 412 moves accordingly and disengages from the groove 33, reaching the release position, and the roller brush plate 3 can then be opened.

[0026] To ensure that the locking mechanism 4 can be stably held in the locked position when not in operation and can automatically reset after operation, a spring 42 is also provided between the sliding release button 41 and the lower cover 11. The spring 42 provides a biasing force that causes the sliding release button 41 to tend towards the locked position.

[0027] Under normal cleaning conditions, the spring force of spring 42 keeps the sliding release button 41 in the front (locked) position, and the locking hook 412 engages with the groove 33 of the roller brush pressure plate 3, locking it in place. At this time, the PET rigid film component 52 of the sealing structure 5, supported by the soft rubber component 51, fits tightly against the annular protrusion 411 on the sliding release button 41, effectively preventing dust and sand particles from entering through the gaps in the second opening 112.

[0028] When the roller brush plate 3 needs to be opened, the user uses their finger to push the sliding release button 41, which protrudes from the second opening 112, backward, compressing the spring 42 and causing the locking hook 412 to retract and disengage from the groove 33. During this sliding process, the annular rib 411 always slides on the smooth PET rigid film component 52, ensuring smooth operation and effective sealing. After releasing the hand, the sliding release button 41 automatically returns to the locked position under the action of the spring 42.

[0029] This invention effectively solves the technical problem of sand particles easily getting stuck at the sliding release button at the bottom of the floor brush by setting a sealing structure composed of "soft rubber components combined with PET hard film" on the inner side, and cooperating with the annular rib on the sliding release button, thereby improving the reliability and service life of the floor brush locking mechanism.

[0030] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A floor brush device for a vacuum cleaner, characterized in that, The floor brush device includes: A housing defining a roller brush chamber, the housing having a lower cover facing the surface to be cleaned, the lower cover having a first opening located directly below the roller brush chamber and a second opening away from the first opening; A roller brush is rotatably disposed within the roller brush cavity; A roller brush plate is rotatably mounted at the first opening and located below the roller brush in both a closed and fully open position. The roller brush plate has a first end hinged to the lower cover and a second end releasably engaged with the lower cover. A locking mechanism is movably disposed on the lower cover between a locked position in which the second end is locked at the lower cover and a released position in which the second end is released from the lower cover. The locking mechanism has a sliding release button that can be operated by sliding it back and forth by hand, a portion of which protrudes from the second opening. A sealing structure is configured to seal the gap between the sliding release button and a portion of the lower cover defining the second opening. The sealing structure is arranged along the opening of the second opening and on the inner surface of the lower cover. The sealing structure includes a soft rubber component and a hard film component adhered to the soft rubber component. The soft rubber component is adhered to the inner surface of the lower cover. The sliding release button abuts against the hard film component and slides along the hard film component when sliding back and forth.

2. The floor brush device according to claim 1, characterized in that, The sliding release button is provided with an annular rib that matches the shape of the second opening, and the annular rib abuts against the rigid film component.

3. The floor brush device according to claim 1, characterized in that, The rigid film component is a PET rigid film component.

4. The floor brush device according to claim 1, characterized in that, The sliding release button is provided with a locking hook portion, and the second end is provided with a groove; when the locking mechanism is in the locked position, the locking hook portion engages with the groove.

5. The floor brush device according to claim 1, characterized in that, A spring is provided between the sliding release button and the lower cover.

6. The floor brush device according to claim 1, characterized in that, The second opening is located behind the first opening.

Images