Spiral rolling brush

Abstract

The utility model discloses a spiral rolling brush and relates to the technical field of cleaning equipment. The rolling brush comprises a first rolling brush body and a second rolling brush body, a gap exists between the first rolling brush body and the second rolling brush body, the first rolling brush body and the second rolling brush body are each of a spiral structure, and when the first rolling brush body and the second rolling brush body rotate, garbage attached to the first rolling brush body and the second rolling brush body can be transferred from the two sides to the gap in the middle; the device further comprises a driving shaft, a telescopic device and a driving mechanism. The driving shaft is arranged in the first rolling brush and is used for driving the first rolling brush to rotate together; the telescopic device is assembled at one end, close to the second rolling brush, of the driving shaft and is driven by rotation of the driving shaft to do linear motion in the axial direction, when the telescopic device is placed in the second rolling brush, the second rolling brush is driven to rotate together, and after the telescopic device is separated from the second rolling brush, the telescopic device is separated from the second rolling brush through power; the driving mechanism is used for driving the driving shaft to rotate. By the adoption of the technical scheme, hair winding is reduced, cost is reduced, and it is guaranteed that the first rolling brush and the second rolling brush rotate synchronously.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent cleaning equipment, in particular to a spiral roller brush. Background Art

[0002] A robot vacuum, also known as an automatic sweeper, smart vacuum, or robot vacuum, is a type of smart home appliance that uses artificial intelligence to automatically clean floors. It typically uses a brushing and vacuuming method to collect debris into its own trash collection bin, completing the cleaning process. Generally speaking, any robot that performs sweeping, vacuuming, and mopping is also categorized as a robot vacuum.

[0003] In the prior art, the roller brush rods of sweeping machines mostly adopt a complete cylindrical structure. During the sweeping process, hair is easily entangled on the roller brush rod. After each cleaning, the user needs to manually clean the hair on the roller brush, which is unhygienic and affects the user experience.

[0004] In this regard, the Chinese utility model patent with authorization announcement number CN216932986U discloses a roller brush rod, which is equipped with two independently set roller brush rods on the left and right, and the roller brush rods adopt a spiral structure. When the roller brush rods rotate, the garbage attached to the roller brush rods can be transferred from both sides to the middle gap, thereby solving the problem of hair being entangled on the roller brush rods. The left and right roller brush rods can confine the hair in the middle, ensuring that the hair is sucked into the dust box, avoiding the need for users to manually clean the roller brush rods, and improving the user experience.

[0005] However, in this solution, two motors are required to drive the left and right roller brush rods respectively, which is costly and has poor synchronization, and needs to be improved urgently. Utility Model Content

[0006] The purpose of the utility model is to provide a spiral roller brush to address the defects and shortcomings of the existing technology, which has the advantages of reducing hair entanglement, lowering costs, and ensuring that the first roller brush and the second roller brush rotate synchronously.

[0007] To achieve the above-mentioned object, the present invention adopts a technical solution: a spiral roller brush, comprising: a first roller brush and a second roller brush, wherein a gap exists between the first roller brush and the second roller brush, and the first roller brush and the second roller brush both adopt a spiral structure, and when the first roller brush and the second roller brush rotate, garbage attached to the first roller brush and the second roller brush can be transferred from both sides to the middle gap; and further comprising:

[0008] a drive shaft, built into the first roller brush, for driving the first roller brush to rotate together;

[0009] a telescopic device, mounted on one end of the drive shaft near the second roller brush, and moving linearly along the axial direction under the rotation of the drive shaft. When the telescopic device is placed in the second roller brush, it drives the second roller brush to rotate together. After the telescopic device is removed from the second roller brush, it is separated from the power of the second roller brush; and

[0010] The driving mechanism is used to drive the driving shaft to rotate.

[0011] The utility model is further provided that the telescopic device includes:

[0012] a clutch pin, radially disposed at one end of the drive shaft close to the second roller brush, with both ends extending through the drive shaft; and

[0013] a sliding pin movably sleeved on one end of the drive shaft close to the second roller brush, the sliding pin being provided with an internal thread that cooperates with the clutch pin;

[0014] When the driving shaft rotates, the clutch pin rotates accordingly, and the sliding pin performs a linear reciprocating motion along the driving shaft under the action of the spiral transmission.

[0015] The utility model is further provided that the telescopic device also includes: a pin cover movably sleeved on the drive shaft and assembled on the end of the sliding pin away from the second roller brush and moving with the sliding pin; the gap between the pin cover and the drive shaft is smaller than the length of the clutch pin passing through the drive shaft.

[0016] The utility model is further configured such that the cross section of the sliding pin is polygonal, the end of the first roller brush in which the sliding pin is built-in has a corresponding first polygonal inner cavity, and the end of the second roller brush close to the sliding pin has a corresponding second polygonal inner cavity;

[0017] When the drive shaft rotates, the clutch pin rotates accordingly, and the sliding pin and the pin cover make a linear motion toward the direction of the second roller brush under the action of the spiral transmission, and the sliding pin is placed in the second polygonal inner cavity; then the pin cover is blocked by the clutch pin, and the sliding pin and the pin cover no longer move forward; then the sliding pin and the pin cover rotate along with the drive shaft, thereby driving the first roller brush and the second roller brush to rotate.

[0018] The utility model is further provided with a retaining ring inside the second roller brush and close to one end of the first roller brush, and a movable cavity is formed between the retaining ring and the second roller brush; the spiral roller brush also includes:

[0019] a spring pin movably inserted into the movable cavity, the spring pin comprising: an end portion located in the movable cavity and having a diameter larger than the inner diameter of the retaining ring; a head portion located in the second roller brush and on the other side of the retaining ring and having a diameter larger than the inner diameter of the retaining ring; and an insert portion connecting the head portion and the end portion and having a diameter smaller than the inner diameter of the retaining ring; and

[0020] a spring, movably placed in the movable cavity and sleeved on the insertion portion, wherein the diameter of the spring is larger than the inner diameter of the retaining ring but smaller than the diameter of the end portion;

[0021] When the sliding pin moves toward the direction of the second roller brush, the sliding pin pushes the spring pin to move away from the first roller brush, the spring is in a compressed state, and the sliding pin drives the second roller brush to rotate together with the first roller brush; when the sliding pin moves toward the direction of the first roller brush, the spring is reset, and the end of the spring pin closes one end of the active cavity.

[0022] The present invention is further provided with that the end of the sliding pin close to the second roller brush is a closed structure.

[0023] The utility model is further configured that the spiral roller brush further comprises: a first bracket and a second bracket;

[0024] The first bracket includes: a first inner cylinder movably sleeved between the driving shaft and the first roller brush and located at one end away from the second roller brush; and a first support arm connected to the first inner cylinder and extending outward;

[0025] The second bracket includes: a second inner cylinder movably inserted into the second roller brush and located at one end away from the first roller brush; and a second support arm connected to the second inner cylinder and extending outward;

[0026] The first support arm and the second support arm are used to support the spiral roller brush in mid-air.

[0027] The present invention is further provided with that the first roller brush includes: a first roller; a first soft rubber which is sleeved on the first roller and has a spiral structure on its circumference; and a first implanted bristle which is arranged on the circumference of the first soft rubber and also has a spiral structure; the second roller brush includes: a second roller; a second soft rubber which is sleeved on the second roller and has a spiral structure on its circumference; and a second implanted bristle which is arranged on the circumference of the second soft rubber and also has a spiral structure.

[0028] The utility model is further provided with a convex strip parallel to the first roller brush on the outer peripheral side of the sliding pin; the end of the first roller brush in which the sliding pin is built-in has a corresponding first groove, and the end of the second roller brush close to the sliding pin has a corresponding second groove;

[0029] When the sliding pin and the pin cover rotate along with the driving shaft, the first rolling brush and the second rolling brush are driven to rotate under the cooperation of the convex strip and the first groove and the second groove.

[0030] The utility model is further provided with a groove parallel to the first roller brush on the outer peripheral side of the sliding pin; the end of the first roller brush in which the sliding pin is built-in has a corresponding first convex strip, and the end of the second roller brush close to the sliding pin has a corresponding second convex strip;

[0031] When the sliding pin and the pin cover rotate along with the driving shaft, the first rolling brush and the second rolling brush are driven to rotate under the cooperation of the groove and the first convex strip and the second convex strip.

[0032] After adopting the above technical solution, the beneficial effects of the utility model are:

[0033] In the present invention, a first roller brush and a second roller brush are arranged at intervals, and both the first roller brush and the second roller brush adopt a spiral structure, so that when the first roller brush and the second roller brush rotate, garbage attached to the first roller brush and the second roller brush can be transferred from both sides to the middle gap, greatly reducing the probability of hair entanglement; and a drive shaft is provided in the first roller brush, and a telescopic device is provided at one end of the drive shaft, and the second roller brush is inserted through the telescopic device to ensure that the first roller brush and the second roller brush rotate synchronously, and since only one motor is required, the cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0035] Figure 1 It is a structural diagram of a spiral roller brush;

[0036] Figure 2 It is a cross-sectional view of the spiral roller brush in one direction;

[0037] Figure 3 This is a cross-sectional view of the spiral roller brush in the other direction;

[0038] Figure 4 It is a schematic diagram of the structure of the drive shaft and the telescopic device;

[0039] Figure 5 It is a structural diagram of the spring pin and the spring;

[0040] Figure 6 2. It is a schematic structural diagram of the first roller and the second roller;

[0041] Figure 7 It is a structural schematic diagram of the first bracket and the second bracket.

[0042] Description of reference numerals:

[0043] 100, first roller brush; 110, first roller; 111, first polygonal inner cavity; 120, first soft rubber; 130, first hair transplantation;

[0044] 200, second roller brush; 210, second roller; 211, second polygonal inner cavity; 212, retaining ring; 220, second soft rubber; 230, second hair transplantation;

[0045] 300, drive shaft;

[0046] 400, telescopic device; 410, clutch pin; 420, sliding pin; 430, pin cover; 440, spring pin; 441, end; 442, head; 443, insertion portion; 450, spring;

[0047] 500, motor;

[0048] 600, gear transmission mechanism;

[0049] 700, first bracket; 710, first inner cylinder; 720, first support arm;

[0050] 800, second bracket; 810, second inner tube; 820, second support arm. DETAILED DESCRIPTION

[0051] The present invention will be described in further detail below with reference to the accompanying drawings.

[0052] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0053] This embodiment relates to a spiral roller brush, referring to Figure 1-Figure 3The robot vacuum cleaner comprises a first roller brush 100 and a second roller brush 200, each of which has a spiral structure. A gap exists between the first and second roller brushes 100 and 200. As the first and second roller brushes 100 and 200 rotate, hair and other debris adhering to the first and second roller brushes 100 and 200 are transferred from the sides to the gap in the middle, significantly reducing the chance of hair becoming entangled. In the robot vacuum cleaner, hair is drawn into the dust bin through the gap between the first and second roller brushes 100 and 200.

[0054] In order to reduce costs and ensure that the first roller brush 100 and the second roller brush 200 rotate synchronously; Figure 1-Figure 3 The spiral roller brush also includes a drive shaft 300, a telescopic device 400, and a drive mechanism. The drive shaft 300 is internally mounted within the first roller brush 100 and is configured to rotate the first roller brush 100. The telescopic device 400 is mounted on the end of the drive shaft 300 adjacent to the second roller brush 200. Driven by the drive shaft 300, the telescopic device 400 moves linearly along the axial direction. When the telescopic device 400 is inserted into the second roller brush 200, it rotates with the second roller brush 200. After the telescopic device 400 is removed from the second roller brush 200, it is decoupled from the second roller brush 200. The drive mechanism is configured to rotate the drive shaft 300. The telescopic device 400 is used to realize that a motor 500 drives the first roller brush 100 and the second roller brush 200 to rotate synchronously. After the telescopic device 400 is retracted, it will not affect the hair passing through the disconnection point between the first roller brush 100 and the second roller brush 200 and being sucked into the dust box. While ensuring the synchronous rotation of the first roller brush 100 and the second roller brush 200, the cost is reduced because only one driving mechanism is required.

[0055] In a specific embodiment, the driving mechanism is a motor 500 , and the motor 500 drives the driving shaft 300 to rotate through a gear transmission mechanism 600 .

[0056] In one embodiment, referring to Figure 2-Figure 4 The telescopic device 400 includes a clutch pin 410 and a sliding pin 420. The clutch pin 410 is radially disposed at the end of the drive shaft 300 near the second roller brush 200, with both ends extending through the drive shaft 300. The sliding pin 420 is movably mounted on the end of the drive shaft 300 near the second roller brush 200 and has an internal thread that mates with the clutch pin 410. When the drive shaft 300 rotates, the clutch pin 410 rotates accordingly. When the clutch pin 410 rotates, the internally threaded sliding pin 420, driven by a spiral drive, performs a linear reciprocating motion along the drive shaft 300.

[0057] When the spiral roller brush needs to clean the floor, the sliding pin 420 is placed in the second roller brush 200, causing the first roller brush 100 and the second roller brush 200 to rotate synchronously; when hair and other garbage need to be sucked into the dust box through the middle gap between the first roller brush 100 and the second roller brush 200, the sliding pin 420 retracts into the first roller brush 100, exposing the middle gap.

[0058] Based on the above scheme, refer to Figure 2-Figure 4 The retractable device 400 further includes a pin cover 430 that is movably mounted on the drive shaft 300 and assembled to the end of the sliding pin 420 away from the second roller brush 200, moving with the sliding pin 420. The gap between the pin cover 430 and the drive shaft 300 is less than the length of the clutch pin 410 extending through the drive shaft 300; that is, when the sliding pin 420 is mounted with the pin cover 430, the sliding pin 420 will not separate from the first roller brush 100 in the direction closer to the second roller brush 200.

[0059] When the drive shaft 300 rotates, the clutch pin 410 rotates with it. The sliding pin 420 and the pin cover 430, driven by the screw drive, move linearly toward the second roller brush 200, inserting the sliding pin 420 into the second roller brush 200. The pin cover 430 is then blocked by the clutch pin 410, preventing the sliding pin 420 and the pin cover 430 from advancing. The sliding pin 420 and the pin cover 430 then rotate with the drive shaft 300, in turn driving the first roller brush 100 and the second roller brush 200 to rotate. During this process, the sliding pin 420 first moves linearly, while the first and second roller brushes 100 and 200 remain stationary. The sliding pin 420 then rotates, driving the first and second roller brushes 100 and 200 to rotate.

[0060] In order to make the sliding pin 420 better drive the first roller brush 100 and the second roller brush 200 to rotate, refer to Figure 4 and Figure 6 The cross-section of the sliding pin 420 is polygonal. The end of the first roller brush 100 in which the sliding pin 420 is embedded has a corresponding first polygonal inner cavity 111, and the end of the second roller brush 200 near the sliding pin 420 has a corresponding second polygonal inner cavity 211. Specifically in this embodiment, the cross-section of the sliding pin 420 is a regular hexagon, and the first polygonal inner cavity 111 and the second polygonal inner cavity 211 are also regular hexagons. When the sliding pin 420 rotates, the polygonal sliding pin 420 and the polygonal inner cavity cooperate to drive the first roller brush 100 and the second roller brush 200 to rotate. In some embodiments, the cross-section of the sliding pin 420 can also be a regular triangle, a regular quadrilateral, a regular pentagon, etc., or it can be an irregular polygon.

[0061] To better enable the sliding pin to drive the rotation of the first and second roller brushes, the following embodiment (not shown) can also be employed: a ridge parallel to the first roller brush is provided on the outer circumference of the sliding pin; the end of the first roller brush housing the sliding pin has a corresponding first groove, and the end of the second roller brush proximate the sliding pin has a corresponding second groove. Thus, when the sliding pin and the pin cover rotate with the drive shaft, the ridge cooperates with the first and second grooves to drive the rotation of the first and second roller brushes.

[0062] To better enable the sliding pin to drive the rotation of the first and second roller brushes, the following embodiment (not shown) can also be employed: a groove parallel to the first roller brush is defined on the outer circumference of the sliding pin; a corresponding first ridge is formed on the end of the first roller brush housing the sliding pin, and a corresponding second ridge is formed on the end of the second roller brush proximate the sliding pin. When the sliding pin and pin cover rotate with the drive shaft, the groove cooperates with the first and second ridges to drive the rotation of the first and second roller brushes.

[0063] In one embodiment, referring to Figure 5 and Figure 6 A retaining ring 212 is provided inside the second roller brush 200 and near one end of the first roller brush 100, and a movable cavity is formed between the retaining ring 212 and the second roller brush 200. The movable cavity is also the second polygonal inner cavity 211 mentioned above. The spiral roller brush also includes a spring pin 440 and a spring 450. The spring pin 440 is movably inserted into the movable cavity. The spring pin 440 includes an end 441 located in the movable cavity and having a diameter greater than the inner diameter of the retaining ring 212, a head 442 located inside the second roller brush 200 and on the other side of the retaining ring 212 and having a diameter greater than the inner diameter of the retaining ring 212, and an insertion portion 443 connecting the head 442 and the end 441 and having a diameter smaller than the inner diameter of the retaining ring 212. The spring 450 is movably inserted into the movable cavity and sleeved on the insertion portion 443. The diameter of the spring 450 is greater than the inner diameter of the retaining ring 212 but smaller than the diameter of the end 441. Due to the provision of the retaining ring 212 , the spring pin 440 will not separate from the second roller brush 200 , thereby ensuring the overall stability of the second roller brush 200 .

[0064] When the sliding pin 420 is not inserted into the second roller brush 200, the end 441 of the spring pin 440 closes one end of the active cavity, effectively protecting the internal structure of the second roller brush 200 and preventing dust, hair, etc. from entering the second roller brush 200. When the sliding pin 420 moves toward the second roller brush 200, the sliding pin 420 pushes the spring pin 440 away from the first roller brush 100, and the spring 450 is compressed. When the sliding pin 420 moves toward the first roller brush 100 (i.e., when the sliding pin 420 retracts), the spring 450 returns to its original position, and the end 441 of the spring pin 440 recloses one end of the active cavity.

[0065] In one embodiment, referring to Figure 2-Figure 4 The end of the sliding pin 420 near the second roller brush 200 is a closed structure, so that the sliding pin 420 can better push the spring pin 440, better protect the internal structure of the first roller brush 100, and effectively prevent dust, hair, etc. from entering the first roller brush 100. More specifically, the end of the sliding pin 420 near the second roller brush 200 is set as a pointed end, so as to better push the spring pin 440 and better prevent hair from being entangled.

[0066] Reference Figure 1 and Figure 7 The spiral roller brush also includes: a first bracket 700 and a second bracket 800. Among them, the first bracket 700 includes: a first inner cylinder 710 that is movably mounted between the drive shaft 300 and the first roller brush 100 and is located at one end away from the second roller brush 200; and a first support arm 720 that is connected to the first inner cylinder 710 and extends outward. The second bracket 800 includes: a second inner cylinder 810 that is movably inserted into the second roller brush 200 and is located at one end away from the first roller brush 100; and a second support arm 820 that is connected to the second inner cylinder 810 and extends outward. The first support arm 720 and the second support arm 820 are used to support the spiral roller brush in the air in the sweeper, so that the first roller brush 100 and the second roller brush 200 can rotate freely to clean the floor. More specifically, the first support arm 720 and the second support arm 820 each include two L-shaped structures.

[0067] In one embodiment, referring to Figure 1-Figure 3 The first roller brush 100 includes: a first roller 110; a first soft rubber 120 with a spiral structure surrounding it, which is mounted on the first roller 110; and first bristles 130 with a spiral structure surrounding the first soft rubber 120. The second roller brush 200 includes: a second roller 210; a second soft rubber 220 with a spiral structure surrounding it, which is mounted on the second roller 210; and second bristles 230 with a spiral structure surrounding the second soft rubber 220. Both the first and second roller brushes 100 and 200 have a double-helix structure, which is more effective in guiding hairs toward the center than a single-helix structure.

[0068] The working principle of the present invention is roughly as follows:

[0069] The motor 500 drives the first roller brush 100 and the second roller brush 200 to rotate synchronously during the movement process: the motor 500 drives the drive shaft 300 to rotate through the gear transmission mechanism 600; when the drive shaft 300 rotates, the clutch pin 410 rotates accordingly, and the sliding pin 420 and the pin cover 430 make a linear motion toward the second roller brush 200 under the action of the spiral transmission; the sliding pin 420 pushes the spring pin 440 to move away from the first roller brush 100, and the sliding pin 420 is placed in the second roller brush 200, and then the pin cover 430 is blocked by the clutch pin 410, and the sliding pin 420 and the pin cover 430 no longer move forward; the sliding pin 420 and the pin cover 430 rotate with the drive shaft 300, driving the first roller brush 100 and the second roller brush 200 to rotate synchronously.

[0070] When the sliding pin 420 moves toward the first roller brush 100 , the sliding pin 420 retreats into the first roller brush 100 , the spring 450 is reset, and the end 441 of the spring pin 440 closes one end of the movable cavity again.

[0071] The above is only used to illustrate the technical solution of the present invention and is not intended to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A spiral roller brush comprising: A first roller brush (100) and a second roller brush (200), wherein a gap exists between the first roller brush (100) and the second roller brush (200), and both the first roller brush (100) and the second roller brush (200) adopt a spiral structure, and when the first roller brush (100) and the second roller brush (200) rotate, garbage attached to the first roller brush (100) and the second roller brush (200) can be transferred from both sides to the middle gap; characterized in that it also includes: A driving shaft (300) is built into the first rolling brush (100) and is used to drive the first rolling brush (100) to rotate together; A telescopic device (400) is mounted on one end of the drive shaft (300) close to the second roller brush (200), and moves linearly along the axial direction under the rotational drive of the drive shaft (300). When the telescopic device (400) is placed in the second roller brush (200), it drives the second roller brush (200) to rotate together. After the telescopic device (400) is separated from the second roller brush (200), it is powered and separated from the second roller brush (200); and A driving mechanism is used to drive the driving shaft (300) to rotate.

2. The spiral roller brush according to claim 1, characterized in that: The telescopic device (400) comprises: a clutch pin (410) radially disposed at one end of the drive shaft (300) close to the second roller brush (200), with both ends passing through the drive shaft (300); and a sliding pin (420) movably sleeved on one end of the drive shaft (300) close to the second roller brush (200), the sliding pin (420) being provided with an internal thread that cooperates with the clutch pin (410); When the driving shaft (300) rotates, the clutch pin (410) rotates accordingly, and the sliding pin (420) performs a linear reciprocating motion along the driving shaft (300) under the action of the spiral transmission.

3. The spiral roller brush according to claim 2, characterized in that: The telescopic device (400) further comprises: a pin cover (430) movably sleeved on the drive shaft (300), assembled on the end of the sliding pin (420) away from the second roller brush (200), and moving following the sliding pin (420); a gap between the pin cover (430) and the drive shaft (300) is smaller than the length of the clutch pin (410) passing through the drive shaft (300).

4. The spiral roller brush according to claim 3, characterized in that: The cross section of the sliding pin (420) is polygonal, the end of the first roller brush (100) in which the sliding pin (420) is built has a corresponding first polygonal inner cavity (111), and the end of the second roller brush (200) close to the sliding pin (420) has a corresponding second polygonal inner cavity (211); When the driving shaft (300) rotates, the clutch pin (410) rotates accordingly, and the sliding pin (420) and the pin cover (430) perform linear motion toward the second roller brush (200) under the action of the spiral transmission, and the sliding pin (420) is placed in the second polygonal inner cavity (211); then the pin cover (430) is blocked by the clutch pin (410), and the sliding pin (420) and the pin cover (430) no longer move forward; then the sliding pin (420) and the pin cover (430) rotate along with the driving shaft (300), thereby driving the first roller brush (100) and the second roller brush (200) to rotate.

5. The spiral roller brush according to any one of claims 2 to 4, characterized in that: A retaining ring (212) is provided inside the second roller brush (200) and close to one end of the first roller brush (100), and a movable cavity is formed between the retaining ring (212) and the second roller brush (200); The spiral roller brush also includes: A spring pin (440) is movably inserted into the movable cavity, and the spring pin (440) comprises: an end portion (441) located in the movable cavity and having a diameter greater than the inner diameter of the retaining ring (212); a head portion (442) located in the second roller brush (200) and on the other side of the retaining ring (212) and having a diameter greater than the inner diameter of the retaining ring (212); and an insertion portion (443) connecting the head portion (442) and the end portion (441) and having a diameter smaller than the inner diameter of the retaining ring (212); and a spring (450) movably inserted into the movable cavity and sleeved on the inserting portion (443); the diameter of the spring (450) is larger than the inner diameter of the retaining ring (212) but smaller than the diameter of the end portion (441); When the sliding pin (420) moves toward the second roller brush (200), the sliding pin (420) pushes the spring pin (440) to move away from the first roller brush (100), the spring (450) is in a compressed state, and the sliding pin (420) drives the second roller brush (200) to rotate together with the first roller brush (100); when the sliding pin (420) moves toward the first roller brush (100), the spring (450) is reset, and the end (441) of the spring pin (440) closes one end of the movable cavity.

6. The spiral roller brush according to claim 5, characterized in that: One end of the sliding pin (420) close to the second roller brush (200) is a closed structure.

7. The spiral roller brush according to any one of claims 2 to 4, characterized in that: The spiral roller brush further comprises: a first bracket (700) and a second bracket (800); The first bracket (700) comprises: a first inner cylinder (710) movably sleeved between the driving shaft (300) and the first roller brush (100) and located at one end away from the second roller brush (200); and a first support arm (720) connected to the first inner cylinder (710) and extending outward. The second bracket (800) comprises: a second inner cylinder (810) movably inserted into the second roller brush (200) and located at one end away from the first roller brush (100); and a second support arm (820) connected to the second inner cylinder (810) and extending outward. The first support arm (720) and the second support arm (820) are used to support the spiral roller brush in mid-air.

8. The spiral roller brush according to any one of claims 1 to 4, characterized in that: The first roller brush (100) comprises: a first roller (110); a first soft rubber (120) sleeved on the first roller (110) and provided with a spiral structure on the circumference thereof; and a first bristle (130) provided on the circumference thereof and also having a spiral structure; the second roller brush (200) comprises: a second roller (210); a second soft rubber (220) sleeved on the second roller (210) and provided with a spiral structure on the circumference thereof; and a second bristle (230) provided on the circumference thereof and also having a spiral structure.

9. The spiral roller brush according to claim 3, characterized in that: The outer peripheral side of the sliding pin (420) is provided with a convex strip parallel to the first roller brush (100); the end of the first roller brush (100) in which the sliding pin (420) is built has a corresponding first groove, and the end of the second roller brush (200) close to the sliding pin (420) has a corresponding second groove; When the sliding pin (420) and the pin cover (430) rotate along with the driving shaft (300), the first roller brush (100) and the second roller brush (200) are driven to rotate in cooperation with the protruding strip and the first groove and the second groove.

10. The spiral roller brush according to claim 3, characterized in that: The outer peripheral side of the sliding pin (420) is provided with a groove parallel to the first roller brush (100); the end of the first roller brush (100) in which the sliding pin (420) is built has a corresponding first convex strip, and the end of the second roller brush (200) close to the sliding pin (420) has a corresponding second convex strip; When the sliding pin (420) and the pin cover (430) rotate along with the driving shaft (300), the first roller brush (100) and the second roller brush (200) are driven to rotate in cooperation with the groove and the first and second convex strips.

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