Improved vacuum cleaner attachment

Abstract

To provide an improved vacuum cleaner attachment that avoids hair entanglement, ensures reliable rotation of the rotary brush body, and guarantees the reliability of the operation of the vacuum cleaner attachment. 【Solution means】The improved vacuum cleaner attachment includes an attachment base 100 having a rotary brush chamber 120, a rotary brush body 300 provided in the rotary brush chamber and having a rotary brush body chamber, a drive assembly 400 for driving the rotary brush body to rotate, a drive-side end cover member 500 provided at the drive end of the rotary brush body, a non-drive-side end cover member provided at the non-drive end of the rotary brush body, an attachment cover plate 200 located on the attachment base, a connection head 600 movably connected to the attachment base and located downstream of the rotary brush chamber, a rotary brush strip assembly 700 provided on the rotary brush body, and a bearing cover member engaging with the non-drive-side end cover member.

Description

Technical Field

[0001] The present invention relates to the technical field of household cleaning, and particularly to an improved vacuum cleaner attachment.

Background Art

[0002] A vacuum cleaner utilizes a motor to rotate the blades at high speed, generates a negative air pressure in the dust cup, then uses vacuum to generate suction force, sucks in air and dust simultaneously, and finally separates the dust in the air through cyclone separation and filtration by a filter to achieve the cleaning effect of the indoor environment. A vacuum cleaner attachment is for sucking up dust on the floor according to the use of the vacuum cleaner, and often includes a rotating brush body that rotates around an axis. During the use process of the rotating brush body, dust is likely to get entangled with the rotating shaft and bearings of the rotating brush body, which affects the use of the rotating brush body and may even cause damage to the rotating brush motor in severe cases. Similar technologies can refer to Chinese Utility Model CN203506608U, so there is a need for improvement.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The object of the present invention is to provide an improved vacuum cleaner attachment that can effectively solve the above technical problems, prevent hair from entering the bearing by the end cover flange, move the hair in a direction away from the end cover to avoid entanglement of the hair, ensure the reliable rotation of the rotating brush body, and guarantee the reliability of the operation of the vacuum cleaner attachment.

Means for Solving the Problems

[0004] To achieve the object of the present invention, the present invention provides the following first technical means. The improved vacuum cleaner attachment includes an attachment base having a rotating brush chamber, a rotating brush body provided in the rotating brush chamber and having a rotating brush body chamber, a drive assembly for driving the rotating brush body to rotate, a non-driven side end cover member provided at one end of the rotating brush body, and a non-driven side bearing cover member engaged with the non-driven side end cover member. The non-driven side end cover member includes a non-driven side end cover base and a non-driven side end cover extension that extends along its axial direction from one end of the non-driven side end cover base and can be inserted into the rotating brush body chamber. The bearing cover member includes a bearing cover groove, a connecting shaft located at the center of the bearing cover groove, a bearing fitted on the connecting shaft, and a bearing cover side wall provided so as to surround the bearing cover groove. The non-driven side end cover base has a non-driven side end cover flange that prevents hair from entering the bearing cover member.

[0005] Based on the above technical means, it further includes the following additional technical means.

[0006] The bearing cover member includes a bearing cover groove, a connecting shaft located at the center of the bearing cover groove, a bearing fitted on the connecting shaft, and a bearing cover side wall provided so as to surround the bearing cover groove. The extending direction of the non-driven side end cover flange is away from the non-driven side bearing cover groove.

[0007] The non-driven side end cover base has an axial gap with the bearing cover member in the axial direction of the rotating brush body, and a radial gap between the non-driven side end cover flange and the bearing cover side wall. The radial gap is smaller than the axial gap.

[0008] The non-driven side end cover base is provided with a non-driven side end cover annular wall surrounding the non-driven side end cover extension and located inside the non-driven side end cover flange, and a plurality of non-driven side end cover engaging arms located inside the non-driven side end cover annular wall.

[0009] An attachment cover plate located on the attachment base, a connection head movably connected to the attachment base and located downstream of the rotary brush chamber, and a rotary brush strip assembly provided on the rotary brush body, further comprising, the rotary brush strip assembly includes a plurality of first rotary brush strips and a plurality of second rotary brush strips, and the first rotary brush strip is provided adjacent to the corresponding second rotary brush strip.

[0010] A plurality of rotary brush body grooves for accommodating corresponding non-driven side end cover engaging arms are provided circumferentially on the rotary brush body, and a first rotary brush strip or a second rotary brush strip is provided between two adjacent rotary brush body grooves.

[0011] The present invention provides the following second technical means. The improved vacuum cleaner attachment includes an attachment base having a rotary brush chamber, a rotary brush body provided in the rotary brush chamber and having a rotary brush body chamber, a drive assembly for driving the rotary brush body to rotate, a drive side end cover member provided at one end of the rotary brush body, and a drive side bearing cover member engaging with the drive side end cover member, the drive side end cover member includes a drive side end cover base and a drive side end cover extension portion that extends along its axial direction from one end of the drive side end cover base and can be inserted into the rotary brush body chamber, and the drive side end cover base has a drive side end cover flange for preventing hair from entering the bearing cover member.

[0012] The bearing cover member includes a bearing cover groove, a connecting shaft located at the center of the bearing cover groove, a bearing fitted on the connecting shaft, and a bearing cover side wall provided so as to surround the bearing cover groove. The extending direction of the drive side end cover flange is away from the bearing cover groove. The drive side end cover base has an axial clearance from the bearing cover member in the axial direction of the rotary brush body. There is a radial clearance between the drive side end cover flange and the bearing cover side wall, and the radial clearance is smaller than the axial clearance.

[0013] The drive side end cover base is provided with a drive side end cover annular wall surrounding the drive side end cover extending portion and located inside the non-drive side end cover flange, and a plurality of drive side end cover engaging arms located inside the drive side end cover annular wall.

[0014] It further includes an attachment cover plate located on the attachment base, a connection head movably connected to the attachment base and located downstream of the rotary brush chamber, and a rotary brush strip assembly provided on the rotary brush body. The rotary brush strip assembly includes a plurality of first rotary brush strips and a plurality of second rotary brush strips, and the first rotary brush strips are provided adjacent to the corresponding second rotary brush strips.

Advantages of the Invention

[0015] The beneficial effect of the present invention is that the end cover flange prevents hair from entering the bearing, and by moving the hair in a direction away from the end cover, entanglement of the hair is avoided, reliable rotation of the rotary brush body is ensured, and the reliability of the operation of the vacuum cleaner attachment can be guaranteed.

Brief Description of the Drawings

[0016] The drawings are provided for a further understanding of the present invention, form a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not limit the present invention.

[0017]

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Mode for Carrying Out the Invention

[0018] In order to more clearly clarify the object, technical means and advantages of the embodiments of the present invention, hereinafter, the technical means in the embodiments of the present invention will be combined and described clearly and completely. Obviously, the described embodiments are some of the embodiments of the present invention, not all of the embodiments.

[0019] In the description of the present invention, the orientation or positional relationship indicated by terms such as "center", "lateral direction", "longitudinal direction", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for facilitating the description of the present invention and simplifying the description, and does not indicate or suggest that the device or element mentioned must have a specific orientation and be configured and operated in a specific orientation. Therefore, it should not be understood that the protection scope of the present invention is limited. When an assembly is referred to as being "fixed to" another assembly, it may be directly fixed to the other assembly or may be fixed to the other assembly via an intermediate medium. When an assembly is recognized as being "connected to" another assembly, it may be directly connected to the other assembly or there may be an intermediate medium present at the same time. When an assembly is recognized as being "provided on" another assembly, it may be directly installed on the other assembly or there may be an intermediate medium present at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are only for the purpose of explanation.

[0020] Example: As shown in FIGS. 1 to 9, the present invention discloses a first embodiment of an improved vacuum cleaner attachment, which includes an attachment base 100 having a rotating brush chamber 120, a rotating brush body 300 provided in the rotating brush chamber 120 and having a rotating brush body chamber 320, a drive assembly 400 for driving the rotating brush body 300 to rotate, a drive side end cover member 500 provided at the drive end of the rotating brush body 300, a non-drive side end cover member 510 provided at the non-drive end of the rotating brush body 300, an attachment cover plate 200 located on the attachment base 100, a connection head 600 movably connected to the attachment base 100 and located downstream of the rotating brush chamber 120, a rotating brush strip assembly 700 provided on the rotating brush body 300, and a bearing cover member 800 engaged with the non-drive side end cover member 510.

[0021] The attachment base 100 is placed on the surface to be cleaned and is reciprocally movable. It is integrally injection-molded and includes a dust collection port 124 that communicates with the rear end of the rotary brush chamber 120 and is located upstream of the connection head 600. The dust collection port 124 and the connection head 600 are connected by a hose so as to convey the dust-containing airflow.

[0022] The attachment cover plate 200 covers the rear end of the attachment base 100 and is for covering at least partially the connection head 600. It is integrally injection-molded.

[0023] The rotary brush body 300 has its central axis direction parallel to the surface to be cleaned. It includes a rotary brush body chamber 320 located inside and extending axially, a plurality of rotary brush body grooves 340 located outside and provided spirally along the axial direction with circumferential intervals therebetween, and a plurality of rotary brush strip accommodation grooves located between two adjacent rotary brush body grooves 340. There are two sets of the rotary brush strip accommodation grooves.

[0024] The drive assembly 400 is a DC motor. Its output is connected to one end of the transmission assembly 440, and the other end of the transmission assembly 440 is connected to the drive end of the rotary brush body 300.

[0025] The drive-side end cover member 500 includes a drive-side end cover base 520, a drive-side end cover hole 540 located on one side of the drive-side end cover base 520, a plurality of drive claws 544 provided in the end cover hole 540, and a drive-side end cover extending portion 560 that extends along the axial direction from one end of the drive-side end cover base 520 and can be inserted into the rotating brush body chamber 320. The drive-side end cover base 520 is provided with a drive-side end cover annular wall 524 surrounding the drive-side end cover extending portion 560, a drive-side end cover flange 526 located outside the drive-side end cover annular wall 524, and a plurality of drive-side end cover engaging arms 528 located inside the drive-side end cover annular wall 524 and engaging in the corresponding rotating brush body grooves 340. The drive-side end cover extending portion 560 is substantially hollow cylindrical, and has a drive-side extending portion chamber 564, a drive-side end cover member shaft hole 566 with one end communicating with the drive-side extending portion chamber 564 and the other end communicating with the end cover hole 540, and a plurality of drive-side end cover ribs 568 located on the outer surface and provided at intervals in the circumferential direction.

[0026] The non-drive-side end cover member 510 includes a non-drive-side end cover base 530, a non-drive-side end cover hole 550 located on one side of the non-drive-side end cover base 530, and a non-drive-side end cover extending portion 570 that extends along the axial direction from one end of the non-drive-side end cover base 530 and can be inserted into the rotating brush body chamber 320. Inside the non-drive-side end cover extending portion 570, there are a non-drive-side extending portion chamber 574, a plurality of non-drive-side end cover ribs 578 located on the outer surface and provided at intervals in the circumferential direction, and a non-drive-side shaft-shaped portion 590 located in the non-drive-side extending portion chamber 574 and having a non-drive-side shaft hole 594. The non-drive-side shaft hole 594 communicates with the non-drive-side end cover hole 550.

[0027] The bearing cover member 800 includes a bearing cover groove 804, a bearing cover shaft hole 808 located at the center of the bearing cover groove 804, a connecting shaft 820 located within the bearing cover shaft hole 808, a bearing 840 fitted onto the connecting shaft 820, and a bearing cover side wall 860 provided so as to surround the bearing cover groove 804. The non-driving side end cover base 530 has a non-driving side end cover flange 536 located inside the bearing cover side wall 860. The extending direction of the non-driving side end cover flange 536 is away from the non-driving side bearing cover groove 804. The non-driving side end cover base 530 has an axial clearance from the bearing cover member 800 in the axial direction of the rotary brush body 300, and a radial clearance between the non-driving side end cover flange 536 and the bearing cover side wall 860, and the radial clearance is smaller than the axial clearance. The non-driving side end cover base 530 is provided with a non-driving side end cover annular wall 534 surrounding the non-driving side end cover extending portion 570 and located inside the non-driving side end cover flange 536, and a plurality of non-driving side end cover engaging arms 538 located inside the non-driving side end cover annular wall 534. The central axes of the bearing cover shaft hole 808, the driving side end cover member shaft hole 566, and the non-driving side shaft hole 594 are on the same straight line.

[0028] The rotary brush strip assembly 700 includes a plurality of first rotary brush strips 720 and a plurality of second rotary brush strips 740. The second rotary brush strip 740 corresponding to the first rotary brush strip 720 is provided adjacent thereto to form a set, and in this embodiment, three sets are preferred. The bottoms of the first rotary brush strip 720 and the second rotary brush strip 740 are respectively received and fixed in the corresponding rotary brush strip receiving grooves.

[0029] The rotary brush body 300 is provided with a plurality of rotary brush body grooves 340 circumferentially for receiving the corresponding non-driving side end cover engaging arms 538, and a set of rotary brush strips is provided between two adjacent rotary brush body grooves 340.

[0030] This invention discloses a second embodiment of an improved vacuum cleaner attachment. The improved vacuum cleaner attachment includes an attachment base 100 having a rotary brush chamber 120, an attachment cover plate 200 positioned on the attachment base 100, a rotary brush body 300 provided in the rotary brush chamber 120 and having a rotary brush body chamber 320, a drive assembly 400 for driving the rotary brush body 300 to rotate, a drive-side end cover member 500 provided at one end of the rotary brush body 300, a connection head 600 connected to the rotary brush chamber 120, a rotary brush strip assembly 700 provided on the rotary brush body 300, and a bearing cover member 800 engaging with the drive-side end cover member 500.

[0031] The drive-side end cover member 500 includes a drive-side end cover base 520 and a drive-side end cover extension 560 extending along its axial direction from one end of the drive-side end cover base 520 and insertable into the rotary brush body chamber 320. The bearing cover member 800 includes a bearing cover groove 804, a bearing cover shaft hole 808 located at the center of the bearing cover groove 804, a connection shaft 820 located in the bearing cover shaft hole 808, a bearing 840 fitted on the connection shaft 820, and a bearing cover side wall 860 provided to surround the bearing cover groove 804. The drive-side end cover base 520 has a drive-side end cover flange 526 located inside the bearing cover side wall 860. The extending direction of the drive-side end cover flange 526 is away from the bearing cover groove 804. The drive-side end cover base 520 has an axial clearance with the bearing cover member 800 in the axial direction of the rotary brush body 300, and there is a radial clearance between the drive-side end cover flange 526 and the bearing cover side wall 860, and the radial clearance is smaller than the axial clearance. The drive-side end cover base 520 is provided with a drive-side end cover annular wall 524 surrounding the drive-side end cover extension 560 and located inside the non-drive-side end cover flange 526, and a plurality of drive-side end cover engaging arms 528 located inside the drive-side end cover annular wall 524.

[0032] The rotary brush strip assembly 700 includes a plurality of first rotary brush strips 720 and a plurality of second rotary brush strips 740. The first rotary brush strips 720 are provided adjacent to the corresponding second rotary brush strips 740. The first rotary brush strips 720 and the second rotary brush strips 740 are made of different materials, and in this embodiment, the number is three.

[0033] During operation, under the high-speed rotation of the drive assembly 400, the first rotary brush strips 720 and the second rotary brush strips 740 of the rotary brush body 300 rotate accordingly and strike the surface to be cleaned to generate a dust-containing airflow. The dust-containing airflow enters the rotary brush chamber 120, enters the hose through the dust collection port 124 on the rear side of the rotary brush chamber 120, and then flows in the direction of the dust cup of the vacuum cleaner through the connection head 600. Finally, it is filtered and discharged to the outside. Since the extending directions of both the drive-side end cover flange 526 and the non-drive-side end cover flange 536 are towards the middle of the rotary brush body 300 and away from the groove where the bearing is located, hair is less likely to enter the bearing.

[0034] The advantage of the present invention is that the end cover flange prevents hair from entering the bearing and moves the hair in a direction away from the end cover, thereby avoiding entanglement of the hair, ensuring reliable rotation of the rotary brush body, and guaranteeing the reliability of the operation of the vacuum cleaner attachment.

[0035] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited thereto. Those skilled in the art can make various modifications and improvements without departing from the creative idea of the present invention, and all of these belong to the protection scope of the present invention.

Claims

**Claim 1** An attachment base (100) having a rotary brush chamber (120), a rotary brush body (300) provided in the rotary brush chamber (120) and having a rotary brush body chamber (320), a drive assembly (400) for driving and rotating the rotary brush body (300), a non-driven side end cover member (510) provided at one end of the rotary brush body (300), and a bearing cover member (800) engaging with the non-driven side end cover member (510), wherein the non-driven side end cover member (510) includes a non-driven side end cover base (530) and a non-driven side end cover extending portion (570) that extends along the axial direction from one end of the non-driven side end cover base (530) and can be inserted into the rotary brush body chamber (320), and the non-driven side end cover base (530) has a non-driven side end cover flange (536) that prevents hair from entering the bearing cover member (800), characterized in that it is an improved vacuum cleaner attachment. **Claim 2** The bearing cover member (800) includes a bearing cover groove (804), a connecting shaft (820) located at the center of the bearing cover groove (804), a bearing (840) fitted on the connecting shaft (820), and a bearing cover side wall (860) provided so as to surround the bearing cover groove (804), and the extending direction of the non-driven side end cover flange (536) is away from the bearing cover groove (804), characterized in that it is the improved vacuum cleaner attachment according to Claim 1. **Claim 3** The non-driven side end cover base (530) has an axial gap with the bearing cover member (800) in the axial direction of the rotary brush body (300), and there is a radial gap between the non-driven side end cover flange (536) and the bearing cover side wall (860), and the radial gap is smaller than the axial gap, characterized in that it is the improved vacuum cleaner attachment according to Claim 2. **Claim 4** The non-driven side end cover base (530) is provided with a non-driven side end cover annular wall (534) surrounding the non-driven side end cover extending portion (570) and located inside the non-driven side end cover flange (536), and a plurality of non-driven side end cover engaging arms (538) located inside the non-driven side end cover annular wall (534), characterized in that it is the improved vacuum cleaner attachment according to Claim 3. **Claim 5** An attachment cover plate (200) located on the attachment base (100), a connection head (600) movably connected to the attachment base (100) and located downstream of the rotary brush chamber (120), and a rotary brush strip assembly (700) provided on the rotary brush body (300). The rotary brush strip assembly (700) further includes a plurality of first rotary brush strips (720) and a plurality of second rotary brush strips (740), and the first rotary brush strip (720) is provided adjacent to the corresponding second rotary brush strip (740). The improved vacuum cleaner attachment according to claim 4, characterized in that.

6. A plurality of rotary brush body grooves (340) for accommodating corresponding non-driven side end cover engagement arms (538) are provided circumferentially on the rotary brush body (300), and a first rotary brush strip (720) or a second rotary brush strip (740) is provided between two adjacent rotary brush body grooves. The improved vacuum cleaner attachment according to claim 5, characterized in that.

7. An attachment base (100) having a rotary brush chamber (120), a rotary brush body (300) provided in the rotary brush chamber (120) and having a rotary brush body chamber (320), a drive assembly (400) for driving the rotary brush body (300) to rotate, a drive side end cover member (500) provided at one end of the rotary brush body (300), and a bearing cover member (800) engaged with the drive side end cover member (500). The drive side end cover member (500) includes a drive side end cover base (520) and a drive side end cover extension (560) extending along its axial direction from one end of the drive side end cover base (520) and insertable into the rotary brush body chamber (320). The drive side end cover base (520) has a drive side end cover flange (526) for preventing hair from entering the bearing cover member (800). The improved vacuum cleaner attachment, characterized in that.

8. The bearing cover member (800) includes a bearing cover groove (804), a connection shaft (820) located at the center of the bearing cover groove (804), a bearing (840) fitted on the connection shaft (820), and a bearing cover side wall (860) provided so as to surround the bearing cover groove (804). The extending direction of the drive-side end cover flange (526) is away from the bearing cover groove (804). The drive-side end cover base (520) has an axial clearance from the bearing cover member (800) in the axial direction of the rotary brush body (300). There is a radial clearance between the drive-side end cover flange (526) and the bearing cover side wall (860), and the radial clearance is smaller than the axial clearance. The improved vacuum cleaner attachment according to claim 7 is characterized by this.

9. The drive-side end cover base (520) is provided with a drive-side end cover annular wall (524) that surrounds the drive-side end cover extending portion (560) and is located inside the non-drive-side end cover flange (526), and a plurality of drive-side end cover engaging arms (528) located inside the drive-side end cover annular wall (524). The improved vacuum cleaner attachment according to claim 8 is characterized by this.

10. The improved vacuum cleaner attachment according to claim 9 further includes an attachment cover plate (200) located on the attachment base (100), a connection head (600) connected to the rotary brush chamber (120), and a rotary brush strip assembly (700) provided on the rotary brush body (300). The rotary brush strip assembly (700) includes a plurality of first rotary brush strips (720) and a plurality of second rotary brush strips (740), and the first rotary brush strips (720) are provided adjacent to the corresponding second rotary brush strips (740).

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