Dust-suction floor brush

Abstract

The utility model relates to a dust absorption floor brush, include: casing, including floor brush lower cover, rolling brush, rolling brush pressure plate have opposite first, second end, the floor brush lower cover is equipped with rotating shaft, is equipped with the shaft hole at first end portion, rotating shaft is worn in the shaft hole, second end portion releasably joint to floor brush lower cover, when rolling brush pressure plate opens, the outer wall surface of first end portion and one rotation limit point on floor brush lower cover abut and first end portion is hindered by rotation limit point and continues to rotate along the first direction, floor brush lower cover sets up the limit lug, first end portion is set up on radial direction and is equipped with the gap of leading to the shaft hole, the narrowest diameter of gap is equal to or greater than the outer diameter of rotating shaft, the outer wall surface of first end portion is equipped with abutment, and abutment is adjacent to gap, when rolling brush pressure plate opens completely, the gap is located on the upside of rotating shaft and abutment abuts with limit lug. The rolling brush pressure plate, rotating shaft, floor brush lower cover of the case are not easy to be destroyed in the rolling brush pressure plate rotation process, and the rework rate is low.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, and in particular to a vacuum cleaner floor brush for use in vacuum cleaners. 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. To facilitate cleaning, replacement, or maintenance of the roller brush, existing floor brush designs often include an openable roller brush pressure plate. This pressure plate is usually located at the bottom of the floor brush housing, with one end hinged to the housing at the bottom of the brush and the other end secured to the housing at the bottom of the brush via a clip or other releasable mechanism.

[0003] When users need to clean or remove the roller brush, they only need to release the fixing structure at one end of the roller brush pressure plate. The pressure plate can then be rotated around the hinge axis to open, exposing the roller brush for easy operation. However, because the roller brush pressure plate itself is small and lightweight, it is easy for users to over-rotate it with slight force during opening, causing the roller brush pressure plate to collide violently or be excessively squeezed against the shell at the bottom of the floor brush. Repeatedly performing this operation over a long period can easily cause damage, cracks, or deformation to the roller brush pressure plate or the shell structure at the bottom of the floor brush. It may also affect the connection stability of the hinge, thereby reducing the product's lifespan and user experience. Utility Model Content

[0004] In order to solve the problems mentioned above, the purpose of this utility model is to provide a vacuuming floor brush that can effectively prevent damage to the roller brush pressure plate and the housing at the bottom of the floor brush when the roller brush pressure plate rotates excessively.

[0005] Therefore, this application provides a vacuum floor brush, comprising: a housing including a floor brush lower cover, the two defining a roller brush cavity; a roller brush, rotatably disposed within the roller brush cavity; and a roller brush pressure plate, rotatably engaged with the floor brush lower cover in a closed position and a fully open position about a horizontal axis; the roller brush pressure plate rotates about the horizontal axis in a first direction when rotating from the closed position to the fully open position, the roller brush pressure plate having a first end and a second end opposite to each other, a rotating shaft defining the horizontal axis is mounted on the floor brush lower cover, the first end is provided with a shaft hole adapted to the rotating shaft, the rotating shaft passes through the shaft hole, and the second end is releasably engaged with the floor brush lower cover. The floor brush lower cover; when the roller brush pressure plate rotates to the fully open position along the first direction, the outer wall surface of the first end abuts against a rotation limit point on the floor brush lower cover, and the first end is prevented from continuing to rotate along the first direction by the rotation limit point; the floor brush lower cover is provided with a limiting rib, and a notch leading to the shaft hole is opened in the radial direction on the first end, the narrowest diameter of the notch being greater than or equal to the outer diameter of the rotating shaft, and an abutting part is provided on the outer wall surface of the first end, the abutting part being adjacent to the notch; when the roller brush pressure plate is in the fully open position, the notch is located on the upper side of the rotating shaft and the abutting part abuts against the limiting rib.

[0006] In some embodiments, the outer wall surface of the first end is provided with an arc-shaped recess; the central angle corresponding to the arc-shaped recess is consistent with the angle through which the roller brush plate rotates from the closed position to the fully open position; during the process of the roller brush plate rotating from the closed position to the fully open position, the rib engages with the arc-shaped recess.

[0007] In some embodiments, the central angle of the arcuate concave portion is greater than or equal to 90° and less than or equal to 120°.

[0008] In some embodiments, the notch is funnel-shaped.

[0009] In some embodiments, the floor brush cover is provided with a locking mechanism having an unlocked position and a locked position. The locking mechanism includes an unlocking block that can be moved by a user in a forward or backward or left or right direction and a latch that is triggered to move by the movement of the unlocking block. When the locking mechanism is in the locked position, the latch is placed in a groove at the second end.

[0010] Compared with the prior art, the beneficial effects of this application are as follows: by setting a notch, the roller brush plate will disengage from the rotating shaft at the notch when the roller brush plate rotates excessively, thereby ensuring that the roller brush plate, rotating shaft, and floor brush cover will not be damaged, which greatly reduces the repair work after the sale. Attached Figure Description

[0011] Figure 1 This is a three-dimensional schematic diagram of a vacuum floor brush according to the present invention;

[0012] Figure 2 for Figure 1 A diagram showing the vacuum brush in the picture taken from below;

[0013] Figure 3 for Figure 2 Cross-sectional view along the AA direction;

[0014] Figure 4 for Figure 3 A schematic diagram showing the roller brush pressure plate rotating to the fully open position;

[0015] Figure 5 for Figure 4 A schematic diagram showing the roller brush pressure plate rotating a certain angle along the first direction from its fully open position.

[0016] Figure 6 for Figure 5 A schematic diagram showing the brush plate after it has detached from the metal rotating shaft. Detailed Implementation

[0017] The dust-collecting floor brush of this utility model will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the following description is exemplary and not a limitation thereof.

[0018] The floor brush of this application is the part of the vacuum cleaner that directly contacts the surface being cleaned during operation. Through the high-speed rotation of the roller brush, it effectively "rolls" dust, hair, debris, etc., from the surface to be cleaned into the suction channel within the floor brush. Because a small amount of hair may become entangled on the roller brush during the process of rolling up pet hair and long hair, it is a routine operation to disassemble the roller brush to clean the entangled hair after a period of use when using this type of vacuum cleaner. The following technical solution of this application is proposed to better meet this routine operation requirement.

[0019] See Figure 1 and Figure 2As shown, a vacuum floor brush designed according to the technical solution of this application is illustrated. The vacuum floor brush 100 mainly includes a housing 1, a roller brush 2, and a roller brush pressure plate 3. The housing 1 consists of a lower cover 11 and an upper cover 12, which together form a roller brush cavity 10, which has a lower opening 101. The roller brush 2 is rotatably mounted inside the roller brush cavity 10 and can be driven to rotate by a drive device (such as a motor). The bristles of the roller brush 2 extend downwards from the lower opening 101 to contact the surface to be cleaned. The housing 1 also has a suction channel (not shown) in fluid communication with the roller brush cavity 10. Dust and debris rolled up by the roller brush 2 can be sucked into the roller brush cavity 10 through the lower opening 101 and enter the suction channel.

[0020] The roller brush pressure plate 3 is rotatably connected to the lower cover 1 of the floor brush 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.

[0021] like Figure 3-5 As shown, the roller brush plate 3 has a first end 31 and a second end 32 that are spaced apart from each other in the front-rear direction. The roller brush plate 3 is rotatably connected to the metal rotating shaft 4 on the floor brush cover 11 via the first end 31. Specifically, the first end 31 of the roller brush plate 3 is provided with a shaft hole 30. The metal rotating shaft 4 passes through the shaft hole 30, allowing the roller brush plate 3 to rotate about the horizontal axis X between a closed position and a fully open position. The second end 32 of the roller brush plate 3 is connected by a locking mechanism 5 (see...). Figure 2 It can be releasably engaged with the bottom cover 11 of the floor brush.

[0022] The locking mechanism 5 includes an unlocking block 51 that can be moved by the user in a forward-backward or left-right direction, a latch 52 that moves when triggered by the unlocking block 51, and a spring 53 located between the unlocking block 51 and the lower cover 11 of the floor brush. In this example, the unlocking block 51 can be moved by the user in a forward-backward direction. When the locking mechanism 5 is in the locked position, the latch 52 is inserted into the groove 33 of the second end 32 of the roller brush plate 3, fixing the roller brush plate 3 in the closed position; when the user moves the unlocking block 51, the latch 52 is disengaged from the groove 33, unlocking the mechanism, at which point the roller brush plate 3 can be rotated about the horizontal axis X.

[0023] When the locking mechanism 5 is unlocked, the user can rotate the roller brush plate 3 from the closed position to the fully open position in the first direction (e.g., counterclockwise). In this example, when the roller brush plate 3 is rotated to the fully open position, part of the outer wall surface of its first end 31 abuts against the rotation limit point 112 on the floor brush cover 1, preventing it from continuing to rotate in the first direction.

[0024] An abutment portion 36 is provided on the outer wall surface of the first end 31. A limiting rib 111 is provided on the lower cover 1 of the floor brush. When the roller brush pressure plate 3 rotates to the fully open position, the abutment portion 36 abuts against the limiting rib 111; together with the rotation limit point 112, it further increases the action of preventing it from continuing to rotate in the first direction. In this way, by means of the limiting rib 111 working in coordination with the abutment portion 36, the roller brush pressure plate 3 can be accurately positioned and stably supported in the fully open position.

[0025] In this example, an arc-shaped recess 35 is also provided on the outer wall surface of the first end 31. The abutment portion 36 defines one end of the arc-shaped recess 35. The central angle corresponding to the recess 35 is consistent with the angle rotated by the roller brush plate 3 from the closed position to the fully open position, preferably 90° to 120°. During the rotation of the roller brush plate 3, the limiting rib 111 is always engaged in the arc-shaped recess 35, playing a guiding and auxiliary limiting role, making the rotation process more stable.

[0026] The first end 31 of the roller brush plate 3 is C-shaped, and a notch 34 is formed radially thereon. This notch 34 communicates with the shaft hole 30, and its narrowest diameter is greater than or equal to the outer diameter of the metal rotating shaft 4, so that the metal rotating shaft 4 can move radially within the notch 34. Figure 4 As shown, when the roller brush pressure plate 3 is in the closed position, the notch 34 is located below it; as Figure 5 As shown, when the roller brush plate 3 is in the fully open position, the notch 34 is located above it.

[0027] The abutment portion 36 and the notch 34 are adjacent in the circumferential direction; viewed along the first direction, the notch 34 is located upstream of the abutment portion 36. This design allows the brush plate 3 to move to the position opposite the limiting rib 111 when it reaches the fully open position. If a force continues to be applied to the brush plate 3, causing it to continue rotating in the first direction (i.e., the brush plate 3 rotates excessively), the notch 34 of the brush plate 3 will move away from the notch 34 and disengage from the metal rotating shaft 4. Figure 5 As shown.

[0028] To further optimize assembly and user experience, the notch 34 can be designed in a flared shape. This shape facilitates the smooth disengagement of the metal rotating shaft 4 from the notch 34, while reducing wear and jamming when the brush plate 3 detaches from the metal rotating shaft.

[0029] like Figure 5-6As shown, when the roller brush plate 3 rotates to the fully open position, the force continues to act on the roller brush plate 3, and the first end 31 will abut against the rotation limit point 112 on the bottom cover 11 of the floor brush. The roller brush plate 3 will use the rotation limit point 112 as a lever support point, and the abutting part 36 of the roller brush plate 3 will pass over the limiting rib 111. The roller brush plate 3 will be able to disengage from the rotating metal shaft 4 at the notch 34, thereby avoiding problems such as the roller brush plate 3, the rotating metal shaft 4, and the ground crust 1 breaking due to compression, thus greatly reducing the rework.

[0030] Thus, when the user needs to open the roller brush plate 3, he first pushes the unlocking block 51 to disengage the latch 52 from the groove 33 of the second end 32 of the roller brush plate 3; then, he rotates the roller brush plate 3 in the first direction to the fully open position. During this process, the arc-shaped recess 35 of the first end 31 of the roller brush plate 3 slides along the limiting rib 111 until the outer wall surface of the first end 31 abuts against the rotation limit point 112, and the abutting part 36 abuts against the limiting rib 111. At this time, the roller brush plate 3 will stay in the fully open position, and the user can easily clean or replace the roller brush. If the rotational force applied by the user to the roller brush plate 3 is too large, the first end 31 of the roller brush plate 3 may continue to rotate in the first direction. When the abutting part 36 of the roller brush plate 3 passes the limiting rib 111, the limiting rib 111 will face the notch 34 on the roller brush plate 3. If it continues to rotate, the roller brush plate 3 will disengage from the rotating metal shaft 4 at the notch 34 (i.e., the roller brush plate 3 is removed from the floor brush cover 11). If it is necessary to close the roller brush plate 3, rotate the roller brush plate 3 in the opposite direction to the first direction to the closed position. The locking mechanism 5 will automatically lock, and the operation will be completed.

[0031] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A floor vacuum brush, comprising: The housing includes a floor brush cover, which defines a roller brush chamber; A roller brush is rotatably disposed within the roller brush cavity; as well as A roller brush plate is rotatably engaged with the lower cover of a floor brush in a closed position and a fully open position about a horizontal axis. When the roller brush plate rotates from the closed position to the fully open position, it rotates along a first direction about the horizontal axis. The roller brush plate has a first end and a second end opposite to each other. A rotating shaft defining the horizontal axis is mounted on the lower cover of the floor brush. A shaft hole adapted to the rotating shaft is provided at the first end, and the rotating shaft passes through the shaft hole. The second end is releasably engaged with the lower cover of the floor brush. When the roller brush plate rotates along the first direction to the fully open position, the outer wall surface of the first end abuts against a rotation limit point on the lower cover of the floor brush, and the first end is prevented from continuing to rotate along the first direction by the rotation limit point. Its characteristic is... The lower cover of the floor brush is provided with a limiting rib, and a notch leading to the shaft hole is provided on the first end in the radial direction. The narrowest diameter of the notch is greater than or equal to the outer diameter of the rotating shaft. An abutting part is provided on the outer wall surface of the first end, and the abutting part is adjacent to the notch. When the roller brush pressure plate is in the fully open position, the notch is located on the upper side of the rotating shaft and the abutting part abuts against the limiting rib.

2. The vacuum floor brush according to claim 1, characterized in that, The outer wall surface of the first end is provided with an arc-shaped recess; the central angle corresponding to the arc-shaped recess is the same as the angle through which the roller brush plate rotates from the closed position to the fully open position; during the process of the roller brush plate rotating from the closed position to the fully open position, the rib engages with the arc-shaped recess.

3. The floor vacuum brush according to claim 2, characterized in that, The central angle of the arc-shaped concave portion is greater than or equal to 90° and less than or equal to 120°.

4. The floor vacuum brush according to claim 1, characterized in that, The notch is funnel-shaped.

5. The floor vacuum brush according to claim 1, characterized in that, The floor brush cover is provided with a locking mechanism having an unlocked position and a locked position. The locking mechanism includes an unlocking block that can be moved by the user in a forward or backward or left or right direction and a latch that is triggered to move by the movement of the unlocking block. When the locking mechanism is in the locked position, the latch is placed in a groove at the second end.

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