Dust cup assembly for a vacuum cleaner

Abstract

The utility model discloses a dust collector rolling brush assembly for the tubular casing that is rotatably installed in the dust suction casing and extends along the length direction of the dust suction casing, which is provided with a reciprocating screw rod extending along the axial direction of the tubular casing, one end of the reciprocating screw rod mounted on the tubular casing through at least two bearings arranged at intervals extends to the outside of one end of the tubular casing and is used for cooperating with the dust suction casing through a flat position, one end of a slider cooperating with the reciprocating screw rod is embedded in the spiral groove of the reciprocating screw rod, the other end of the slider is connected with a moving blade through a movable seat and is used for driving the moving blade to reciprocate along the axial direction of the tubular casing. The utility model can not only avoid the situation that the rotating part is stuck or the dust suction air duct is blocked due to the entanglement of long hair, but also can avoid the situation that the cutting efficiency is low due to the long cutting interval or the invalid cutting due to the short cutting interval.

Description

Technical Field

[0001] This utility model relates to the field of cleaning tools, and in particular to a vacuum cleaner roller brush assembly. Background Technology

[0002] The cleaning ability of a vacuum cleaner is heavily reliant on the design of its front-end actuator—the suction head assembly. The cleaning roller brush, a crucial moving component within the suction head, directly intervenes in the cleaning of surfaces such as carpets and floors. Most vacuum cleaner heads on the market today are equipped with a rotary cleaning roller brush. Its basic working principle involves a motor driving the brush to rotate at high speed. The brush bristles then beat and scrape, loosening dust, hair, and other debris embedded in fibers or crevices, which is then carried away by airflow. However, hair (especially long hair) is problematic. Once sucked into the vacuum cleaner, it easily becomes tangled on the floor brush, making it difficult to clean. Furthermore, hair sucked into the vacuum cleaner can cause malfunctions, negatively impacting the user experience. Utility Model Content

[0003] The purpose of this utility model is to provide a vacuum cleaner roller brush assembly that can avoid the situation where long hair gets tangled and causes the rotating parts to jam or block the suction duct, and can also avoid the situation where the cutting interval is too long, resulting in low cutting efficiency, or the cutting interval is too short, resulting in ineffective cutting.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a vacuum cleaner roller brush assembly, for rotatably installed in a cylindrical housing that extends along the length of the vacuum cleaner housing, and further includes: a movable blade and a stationary blade, each extending axially along the cylindrical housing. A blade hole is provided on the side wall of the cylindrical housing to cooperate with the movable blade and the stationary blade. Each of the movable blade and the stationary blade stacked in the cylindrical housing has a plurality of movable blade teeth and stationary blade teeth that are spaced apart along their length and pass through the blade hole. The plurality of stationary blade teeth of the stationary blade fixedly installed on the cylindrical housing are equally spaced along their length. The plurality of movable blade teeth of the movable blade that can reciprocate along the axial direction of the cylindrical housing are divided into several movable blade tooth groups in pairs. The distance between the two movable blade teeth in each movable blade tooth group is the same as the distance between adjacent stationary blade teeth. The distance between adjacent movable blade tooth groups is greater than the distance between adjacent stationary blade teeth.

[0005] The following are further improvements to the above technical solution: 1. In the above scheme, a reciprocating screw extending along its axial direction is provided inside the cylindrical housing. One end of the reciprocating screw, which is mounted on the cylindrical housing through at least two spaced bearings, extends to the outside of one end of the cylindrical housing and is used to cooperate with the dust collection housing through a flat part. One end of a slider that cooperates with the reciprocating screw is embedded in the helical groove of the reciprocating screw. The other end of the slider is connected to the moving blade through a movable seat and is used to drive the moving blade to reciprocate along the axial direction of the cylindrical housing.

[0006] 2. In the above scheme, a guide post extending along the axial direction of the cylindrical shell is installed inside the cylindrical shell and on both sides of the slider, and a guide hole that slides with the guide post is opened on the movable seat.

[0007] 3. In the above scheme, the cutting teeth of both the moving blade and the stationary blade are trapezoidal cutting teeth.

[0008] 4. In the above scheme, both opposite sides of the blade tooth are set as cutting edges.

[0009] 5. In the above scheme, the cylindrical shell of the roller brush is formed by splicing together at least two injection molded parts to form a plastic shell.

[0010] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This utility model relates to a vacuum cleaner roller brush assembly. The cylindrical housing has a blade hole on its side wall for engaging with a moving blade and a stationary blade. Each of the moving and stationary blades, stacked within the cylindrical housing, has several moving and stationary blade teeth spaced along its length and extending through the blade hole. The stationary blade, fixedly mounted on the cylindrical housing, has several stationary blade teeth spaced evenly along its length. The moving blade teeth, capable of reciprocating along the axial direction of the cylindrical housing, are divided into pairs into several moving blade tooth groups. The distance between the two moving blade teeth in each group is the same as the distance between adjacent stationary blade teeth. The distance between adjacent moving blade tooth groups is greater than the distance between adjacent stationary blade teeth. This design allows for the cutting and decomposition of hair through the interaction of the moving and stationary blades, facilitating subsequent negative pressure suction and preventing long hair from tangling and causing rotating parts to jam or clogging the suction duct. It also maintains a suitable cutting interval, avoiding situations where the cutting interval is too long, resulting in low cutting efficiency, or too short, resulting in ineffective cutting. Attached Figure Description

[0011] Appendix Figure 1 This is a schematic diagram of the structure of the vacuum cleaner roller brush assembly of this utility model; Appendix Figure 2 This is a cross-sectional view of the structure of the vacuum cleaner roller brush assembly of this utility model; Appendix Figure 3This is a schematic diagram of the internal structure of the vacuum cleaner roller brush assembly of this utility model; Appendix Figure 4 This is a partial enlarged schematic diagram of the vacuum cleaner roller brush assembly of this utility model; Appendix Figure 5 This is an exploded view of the moving and stationary blades in the vacuum cleaner roller brush assembly of this utility model; Appendix Figure 6 for Figure 5 A magnified schematic diagram of the structure at point A in the middle.

[0012] In the above figures: 1. Cylindrical shell; 2. Blade hole; 3. Moving blade; 31. Moving body part; 32. Moving blade tooth part; 33. Connecting part; 4. Stationary blade; 41. Stationary body part; 42. Stationary blade tooth part; 5. Guide post; 8. Reciprocating screw; 81. Helical groove; 9. Bearing; 10. Slider; 11. Movable seat; 111. Guide hole; 121. Pin shaft; 122. Pin hole. Detailed Implementation

[0013] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0014] Example 1: A vacuum cleaner roller brush assembly for rotatably installing a cylindrical housing 1 within a vacuum cleaner housing and extending along the length of the vacuum cleaner housing. It further includes: a movable blade 3 and a stationary blade 4, each extending axially along the cylindrical housing 1. A blade hole 2 is provided on the side wall of the cylindrical housing 1 to mate with the movable blade 3 and the stationary blade 4. Each of the main bodies 31 and 41 of the movable blade 3 and the stationary blade 4, stacked within the cylindrical housing 1, is provided with several movable blade teeth 32 and stationary blade teeth 42, spaced apart along their length and extending through the blade hole 2. Several stationary blade teeth 42 of the stationary blade 4, fixedly installed on the cylindrical housing 1, are equally spaced along their length. Several movable blade teeth 32 of the movable blade 3, capable of reciprocating along the axial direction of the cylindrical housing 1, are sequentially divided into several movable blade tooth groups in pairs. The distance between the two movable blade teeth 32 in each movable blade tooth group is the same as the distance between adjacent stationary blade teeth 42, and the distance between adjacent movable blade tooth groups is greater than the distance between adjacent stationary blade teeth 42.

[0015] The cylindrical housing 1 is provided with a reciprocating screw 8 extending along its axial direction. One end of the reciprocating screw 8, which is mounted on the cylindrical housing 1 by at least two spaced bearings 9, extends to the outside of one end of the cylindrical housing 1 and is used to cooperate with the dust collection housing through a flat part. One end of a slider 10 that cooperates with the reciprocating screw 8 is embedded in the helical groove 81 of the reciprocating screw 8. The other end of the slider 10 is connected to the moving blade 3 through a movable seat 11 and is used to drive the moving blade 3 to reciprocate along the axial direction of the cylindrical housing 1.

[0016] The main body 31 of the moving blade 3 has a connecting part 33 that mates with the movable seat 11 on the side opposite to its toothed part 32. The connecting part 33 is embedded in the movable seat 11 and connected to the movable seat 11 through at least one set of mating pins 121 and pin holes 122.

[0017] Inside the cylindrical shell 1 and on both sides of the slider 10, there are guide posts 5 extending along the axial direction of the cylindrical shell 1. The movable seat 11 is provided with guide holes 111 that slide with the guide posts 5.

[0018] Example 2: A vacuum cleaner roller brush assembly for rotatably installing a cylindrical housing 1 inside a vacuum cleaner housing and extending along the length of the vacuum cleaner housing, further comprising: a movable blade 3 and a stationary blade 4, each extending axially along the cylindrical housing 1. A blade hole 2 is provided on the side wall of the cylindrical housing 1 to mate with the movable blade 3 and the stationary blade 4. Each of the main bodies 31 and 41 of the movable blade 3 and the stationary blade 4, stacked inside the cylindrical housing 1, is provided with a plurality of movable blade teeth 32 and stationary blade teeth 42, spaced apart along their length and extending through the blade hole 2. The plurality of stationary blade teeth 42 of the stationary blade 4, fixedly installed on the cylindrical housing 1, are equally spaced along their length. The plurality of movable blade teeth 32 of the movable blade 3, which can reciprocate along the axial direction of the cylindrical housing 1, are sequentially divided into several movable blade tooth groups in pairs. The distance between the two movable blade teeth 32 in each movable blade tooth group is the same as the distance between adjacent stationary blade teeth 42, and the distance between adjacent movable blade tooth groups is greater than the distance between adjacent stationary blade teeth 42.

[0019] The cutting teeth 32 and 42 of the moving blade 3 and stationary blade 4 mentioned above are both trapezoidal cutting teeth.

[0020] The two opposite sides of the aforementioned toothed portions 32 and 42 are both configured as cutting blades.

[0021] The cylindrical shell 1 of the roller brush 6 is a plastic shell formed by splicing together at least two injection molded parts.

[0022] A reciprocating lead screw is a precision component that achieves mechanical transmission through a helical groove structure. Its core feature is that when the main shaft rotates in one direction, it drives the slider to complete axial reciprocating motion. It can be obtained by purchasing and falls within the scope of existing technology, so it will not be elaborated here.

[0023] Working principle: When in use, it is installed inside the vacuum cleaner housing as part of the vacuum cleaner, and the cylindrical housing can rotate relative to the vacuum cleaner housing under the drive of the vacuum cleaner drive assembly, while the worm gear that engages with the vacuum cleaner housing through the flat part remains stationary relative to the vacuum cleaner housing; As the cylindrical shell rotates, it drives the moving and stationary blades and the turbine teeth to rotate as well. This causes the turbine teeth to move along the continuous guide grooves on the worm gear, which remains stationary relative to the dust collection housing. This drives the moving blades to reciprocate along the axial direction of the cylindrical shell while rotating. The moving and stationary blades work together to cut the hair that is wrapped between adjacent stationary blades, cutting long hair into small segments that are easy to be sucked out by negative pressure, thus preventing the roller from getting stuck due to long hair tangling. The roller brush rotates at a relatively high speed. The first stage of deceleration is achieved through the worm gear, and the second stage of deceleration is achieved by setting the distance between adjacent moving blade teeth. This ensures that the time interval between reciprocating cuts is appropriate (80 reciprocations per minute). This avoids situations where the cutting interval is too long, resulting in low cutting efficiency and a large amount of hair entanglement, while also avoiding situations where the cutting interval is too short, resulting in ineffective cutting and interference with hair entering the cutting area.

[0024] When using the above-mentioned vacuum cleaner roller brush assembly, it can cut and decompose hair through the cooperation of moving and stationary blades to facilitate subsequent negative pressure suction, avoiding the situation where long hair gets tangled and causes rotating parts to jam or block the suction duct. It can also maintain a suitable cutting interval to avoid the situation where the cutting interval is too long, resulting in low cutting efficiency, or the cutting interval is too short, resulting in ineffective cutting.

[0025] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A vacuum cleaner roller brush assembly, comprising: A cylindrical housing (1) for rotatably mounted inside a vacuum cleaner housing and extending along the length of the vacuum cleaner housing, characterized in that: it further includes: a movable blade (3) and a stationary blade (4), each extending axially along the cylindrical housing (1), wherein a blade hole (2) is provided on the side wall of the cylindrical housing (1) to cooperate with the movable blade (3) and the stationary blade (4), and each of the movable blade (3) and the stationary blade (4) stacked inside the cylindrical housing (1) has a plurality of blade holes (2) spaced apart along its length and extending out of the blade hole (2) on its body portion (31, 41). Moving cutter teeth (32) and stationary cutter teeth (42): The stationary cutter teeth (4) fixedly installed on the cylindrical shell (1) are arranged at equal intervals along their length. The moving cutter teeth (32) of the moving cutter (3) that can reciprocate along the axial direction of the cylindrical shell (1) are divided into several moving cutter tooth groups in pairs. The distance between the two moving cutter teeth (32) in each moving cutter tooth group is the same as the distance between adjacent stationary cutter teeth (42). The distance between adjacent moving cutter tooth groups is greater than the distance between adjacent stationary cutter teeth (42).

2. The vacuum cleaner roller brush assembly according to claim 1, characterized in that: The cylindrical housing (1) is provided with a reciprocating screw (8) extending along its axial direction. One end of the reciprocating screw (8) is mounted on the cylindrical housing (1) by at least two spaced bearings (9) and extends to the outside of one end of the cylindrical housing (1) and is used to cooperate with the dust collection housing through a flat position. One end of a slider (10) that cooperates with the reciprocating screw (8) is embedded in the spiral groove (81) of the reciprocating screw (8). The other end of the slider (10) is connected to the moving blade (3) through a movable seat (11) and is used to drive the moving blade (3) to reciprocate along the axial direction of the cylindrical housing (1).

3. The vacuum cleaner roller brush assembly according to claim 2, characterized in that: Inside the cylindrical shell (1) and on both sides of the slider (10), there is a guide post (5) extending along the axial direction of the cylindrical shell (1). The movable seat (11) is provided with guide holes (111) that slide with the guide post (5).

4. The vacuum cleaner roller brush assembly according to claim 1, characterized in that: The moving blade (3) and the stationary blade (4) each have trapezoidal cutting teeth (32, 42).

5. The vacuum cleaner roller brush assembly according to claim 4, characterized in that: The two opposite sides of the blade teeth (32, 42) are both set as cutting blades.

6. The vacuum cleaner roller brush assembly according to claim 1, characterized in that: The cylindrical shell (1) of the roller brush (6) is a plastic shell formed by splicing together at least two injection molded parts.

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