Floor brush and cleaning apparatus

Abstract

The present disclosure provides a floor brush and a cleaning device, and belongs to the technical field of cleaning devices. The floor brush comprises a shell, a rolling brush, a cutting assembly and a first driving assembly; the shell has a rolling brush cavity, and the rolling brush is rotatably arranged in the rolling brush cavity; the cutting assembly comprises at least one cutting blade closely attached to the surface of the rolling brush and arranged in the shell; the first driving assembly comprises a first motor and a deflection shaft segment connected to the output shaft of the first motor and capable of rotating with the output shaft, and there is a deflection angle between the axis of the deflection shaft segment and the axis of the output shaft; the deflection shaft segment is connected with the cutting blade; when the deflection shaft segment rotates, it can drive the cutting blade to reciprocate. The floor brush and the cleaning device provided by the present disclosure have low mechanical complexity, can improve the cleaning efficiency of hair, avoid the cleaning difficulty of frequent winding of traditional floor brushes, reduce the frequency of manual maintenance of users, and can improve the use experience of users.

Description

Technical Field

[0001] This disclosure belongs to the field of cleaning equipment technology, specifically relating to a floor brush and cleaning equipment. Background Technology

[0002] As a widely used cleaning device, the floor brush of a vacuum cleaner is the core component for cleaning floors. Floor brushes are usually equipped with rotating roller brushes, which pick up and suck up dust, debris, hair and other impurities from the floor into the vacuum cleaner.

[0003] However, when cleaning hair on the floor, the roller brush often gets tangled, especially with long hair or pet hair. This tangled hair not only adheres to the brush surface, reducing its cleaning efficiency, but can also obstruct its rotation and even cause a decrease in suction power, further reducing cleaning effectiveness. Users need to frequently stop the machine, remove the roller brush, and manually remove the tangled hair—a tedious and time-consuming process. Utility Model Content

[0004] The purpose of this disclosure is to provide a floor brush and cleaning device that can automatically cut hair tangled in the roller brush, improve the efficiency of hair cleaning, and eliminate the need for users to manually clean the hair, making operation more convenient.

[0005] To achieve the above objectives, the technical solution provided in this disclosure is as follows:

[0006] In a first aspect, this disclosure provides a floor brush, comprising: a housing, a roller brush, a cutting assembly, and a first drive assembly; the housing has a roller brush cavity; the roller brush is rotatably disposed within the roller brush cavity; the cutting assembly is disposed in the housing, the cutting assembly including at least one cutting blade disposed near the surface of the roller brush; the first drive assembly includes a first motor and a deflection shaft segment connected to the output shaft of the first motor and rotatable with the output shaft of the first motor, the axis of the deflection shaft segment forming a certain deflection angle with the axis of the output shaft of the first motor, the deflection shaft segment being connected to the cutting blade; wherein, when the deflection shaft segment rotates, it can drive the cutting blade to reciprocate along the axial direction of the output shaft of the first motor.

[0007] In one or more embodiments, a transmission ring is sleeved on the deflection shaft segment, the deflection shaft segment is rotatable relative to the transmission ring, the transmission ring is connected to the cutting blade, and a blocking member is provided on one side of the transmission ring to restrict the transmission from rotating around the axis of the output shaft of the first motor.

[0008] In one or more embodiments, the outer peripheral surface of the transmission ring extends radially outward to form a protrusion, and the blocking member includes a blocking rib disposed on the rotation path of the protrusion to limit the rotation of the transmission ring around the output shaft of the first motor.

[0009] In one or more embodiments, the cutting assembly further includes a connector connected to the cutting blade, the connector having a groove in which the protrusion of the drive ring is inserted.

[0010] In one or more embodiments, the size of the groove is larger than the size of the protrusion, and / or the size of the inlet side of the groove gradually decreases along the insertion direction of the protrusion.

[0011] In one or more embodiments, the cutting blade has a connecting portion, the connecting portion is provided with a positioning hole and a mounting hole, the connecting member is provided with a positioning post corresponding to the positioning hole and a screw hole corresponding to the mounting hole, the positioning post is inserted into the positioning hole, and screws are screwed into the mounting hole and the screw hole.

[0012] In one or more embodiments, the cutting blade is provided with a limiting groove extending along the axial direction of the roller brush, and the housing is provided with a limiting protrusion matching the limiting groove, the limiting protrusion protruding into the limiting groove.

[0013] In one or more embodiments, a gasket extending axially along the roller brush is fixedly installed inside the housing, the cutting blade is supported on the gasket, and the limiting protrusion protrudes from the top surface of the gasket toward the limiting groove.

[0014] In one or more embodiments, a limiting piece extending along the axial direction of the roller brush is fixedly installed inside the housing, and the cutting blade is disposed between the limiting piece and the gasket, the limiting piece and the gasket together defining the moving space of the cutting blade.

[0015] In one or more embodiments, the deflection shaft segment includes a first shaft segment and a second shaft segment with different deflection directions, the cutting assembly includes a first cutting blade and a second cutting blade that are in close contact, the first shaft segment is connected to the first cutting blade, the second shaft segment is connected to the second cutting blade, and the first shaft segment and the second shaft segment are used to drive the first cutting blade and the second cutting blade to move along the axial direction of the output shaft of the first motor.

[0016] In one or more embodiments, a first transmission ring is sleeved on the first shaft segment, and a second transmission ring is sleeved on the second shaft segment. The first shaft segment is rotatable relative to the first transmission ring, and the second shaft segment is rotatable relative to the second transmission ring. The first transmission ring is connected to the first cutting blade, and the second transmission ring is connected to the second cutting blade.

[0017] In one or more embodiments, the first shaft segment and the second shaft segment have the same deflection angle, and the first shaft segment and the second shaft segment are used to drive the first cutting blade and the second cutting blade to move in opposite directions.

[0018] In one or more embodiments, the deflection shaft segment is rotatably connected to the transmission ring via a bearing; and / or the cutting blade has a comb-shaped cutting edge on the side close to the roller brush.

[0019] In one or more embodiments, a second drive assembly for driving the roller brush to rotate is further included. The second drive assembly includes a second motor, a track drive mechanism, and a roller. The output shaft of the second motor is connected to the roller through the track drive mechanism, and the roller is aligned with the roller brush along the axial direction of the roller brush.

[0020] Secondly, this disclosure provides a cleaning device including a body and a floor brush as described above, connected to the body.

[0021] The floor brush and cleaning device disclosed herein convert rotational motion into axial reciprocating motion through the linkage between the deflection shaft and the transmission ring, thereby driving the cutting blade to efficiently cut tangled hair. This structure not only has low mechanical complexity but also significantly improves the efficiency of hair cleaning, avoids the cleaning problem of frequent tangling of traditional floor brushes, reduces the frequency of manual maintenance by users, and improves the user experience. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural diagram of a floor brush in one embodiment of the present disclosure;

[0024] Figure 2 This is a schematic diagram of the internal structure of the floor brush in one embodiment of the present disclosure;

[0025] Figure 3This is a cross-sectional view of a ground brush according to an embodiment of the present disclosure;

[0026] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 This is a schematic diagram of the assembly of the first driving component and the cutting component in one embodiment of the present disclosure;

[0028] Figure 6 This is a three-dimensional structural diagram of the first driving component in one embodiment of the present disclosure;

[0029] Figure 7 This is a cross-sectional view of a first driving component in one embodiment of this disclosure;

[0030] Figure 8 This is an exploded view of the cutting component in one embodiment of the present disclosure;

[0031] Figure 9 This is a schematic diagram of the rotation state of the deflection shaft segment in one embodiment of this disclosure.

[0032] Explanation of key figure labels:

[0033] 1-Housing, 11-Roller brush cavity, 2-Roller brush, 3-Cutting assembly, 31-Cutting blade, 31a-First cutting blade, 31b-Second cutting blade, 311-Connecting part, 312-Positioning hole, 313-Mounting hole, 314-Cutting edge, 315-Limiting groove, 32-Connecting piece, 321-Groove, 322-Positioning post, 323-Screw hole, 33-Fasting screw, 4-First drive assembly, 41-Secondary drive assembly 1. Motor, 42-shaft sleeve, 43-deflection shaft section, 431-first shaft section, 432-second shaft section, 44-transmission ring, 44a-first transmission ring, 44b-second transmission ring, 441-protrusion, 45-blocking component, 451-blocking rib, 46-bearing, 5-shield, 51-limiting protrusion, 6-limiting plate, 7-second drive assembly, 71-second motor, 72-track transmission mechanism, 73-roller. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0035] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0036] With the widespread use of vacuum cleaners in home, office, and industrial cleaning, the floor brush, as an important cleaning accessory, directly affects the overall cleaning effect. However, in actual use, vacuum cleaner floor brushes often experience hair entanglement. This entanglement not only reduces cleaning efficiency but can also cause the brush to jam, affecting motor operation, and in severe cases, even requiring manual disassembly of the brush for cleaning. This operation is cumbersome, affects the user experience, and can easily damage the brush structure.

[0037] Based on the analysis of the aforementioned technical shortcomings, this disclosure provides a novel floor brush technology solution, aiming to simplify the structural design while significantly improving hair removal efficiency and effectively avoiding cleaning blind spots and cumbersome manual disassembly operations inherent in traditional solutions. Its core idea lies in utilizing the rotational motion output from a single drive source, and through a transmission conversion mechanism, transforming the rotational motion into the reciprocating movement of blades along the surface of the roller brush. In this way, the hair entangled on the roller brush can be continuously sheared during operation, causing it to automatically detach and achieving a self-cleaning function.

[0038] Please refer to Figures 1 to 5 As shown, a floor brush in one embodiment of this disclosure includes a housing 1, a roller brush 2, a cutting assembly 3, and a first drive assembly 4. The housing 1 has a roller brush cavity 11, and the roller brush 2 is rotatably disposed within the roller brush cavity 11. The cutting assembly 3 is disposed in the housing 1 and includes at least one cutting blade 31 disposed near the surface of the roller brush 2. The first drive assembly 4 includes a first motor 41 and a deflection shaft segment 43 connected to the output shaft of the first motor 41 and rotatable with the output shaft of the first motor 41. The axis of the deflection shaft segment 43 forms a first deflection angle with the axis of the output shaft of the first motor 41, and the deflection shaft segment 43 is connected to the cutting blade 31. When the deflection shaft segment 43 rotates, it can drive the cutting blade 31 to reciprocate along the axial direction of the output shaft of the first motor 41.

[0039] In one exemplary embodiment, a transmission ring 44 is sleeved on the deflection shaft segment 43. The deflection shaft segment 43 is rotatable relative to the transmission ring 44. The rotation axis of the transmission ring coincides with the axis of the deflection shaft segment. The transmission ring 44 is connected to the cutting blade 31. A blocking member 45 is provided on one side of the transmission ring 44 to limit the rotation of the transmission ring 44 around the axis of the output shaft of the first motor 41. Specifically, a bushing 42 that can rotate synchronously with the output shaft of the first motor 41 is sleeved on the output shaft of the first motor 41, and the deflection shaft segment 43 is disposed on the bushing 42.

[0040] The housing 1 serves as the supporting part of the overall structure, providing a stable support frame for other functional components. Inside, there is a roller brush chamber 11, which is used to accommodate and restrict the rotational movement of the roller brush 2. The roller brush 2 is the core cleaning component of the floor brush. Its outer surface is covered with bristles, which contact the ground through high-speed rotation, rolling up dust, debris, and hair so that the vacuum cleaner can suck them into the vacuum cleaner.

[0041] The housing 1 contains a cutting assembly 3, which includes at least one cutting blade 31 arranged in close contact with the surface of the roller brush 2. The cutting blade 31 is designed to continuously cut the hair wrapped around the roller brush 2, thereby preventing hair accumulation. The cutting blade 31 is a movable structure driven by the first drive assembly 4, and can reciprocate as the roller brush 2 rotates, ensuring that the wrapped hair can be quickly cut off.

[0042] The first drive assembly 4 is used to convert the rotational motion of the first motor 41 into the axial reciprocating motion of the cutting blade 31. This assembly includes the first motor 41, a bushing 42 fixed to the motor output shaft, a deflection shaft section 43 on the bushing 42, a transmission ring 44 sleeved on the deflection shaft section 43, and a blocking member 45 that restricts the rotation of the transmission ring 44. The first motor 41 provides rotational power, and its output shaft drives the bushing 42 to rotate synchronously. The bushing 42 has a partially deflected deflection shaft section 43, the axis of which forms a certain deflection angle relative to the output shaft axis of the first motor 41. When the first motor 41 operates, the bushing 42 rotates synchronously with the output shaft, and the deflection angle of the deflection shaft section 43 causes its cross-section perpendicular to the axis of the deflection shaft section 43 to exhibit a reciprocating oscillating motion trajectory relative to the output shaft axis of the first motor 41 during rotation. Preferably, the output shaft axis of the first motor 41 is parallel to the axis of the roller brush 2.

[0043] A transmission ring 44 is sleeved on the deflection shaft section 43. The transmission ring 44 can rotate freely relative to the deflection shaft section 43 and is connected to the cutting blade 31 through structural design. A blocking member 45 is provided on one side of the transmission ring 44 to restrict the rotation of the transmission ring 44 around the axis of the deflection shaft section 43. This limiting mechanism is to convert the rotational motion into axial reciprocating oscillation. Specifically, when the bushing 42 rotates, the surface of the deflection shaft section 43 generates a thrust on the transmission ring 44 along the output shaft axis of the first motor 41 due to the angular deflection. Due to the restriction of the blocking member 45, the transmission ring 44 can oscillate back and forth along the output shaft axis of the first motor 41 under the thrust of the deflection shaft section 43, but cannot rotate around the axis of the deflection shaft section 43. This oscillation directly drives the cutting blade 31 to move back and forth along the axis of the roller brush 2, thereby realizing the dynamic cutting of hair on the surface of the roller brush 2.

[0044] In one exemplary embodiment, please refer to Figure 6 and Figure 7As shown, the outer circumferential surface of the transmission ring 44 protrudes radially outward to form a protrusion 441. The blocking member 45 includes a blocking rib 451, which is disposed on the rotation path of the protrusion 441 to limit the rotation of the transmission ring 44 around the output shaft of the first motor 41. The design of the protrusion 441 enables the transmission ring 44 to effectively capture the axial thrust of the deflection shaft section 43 and transmit this axial thrust to the connected cutting blade 31, thereby realizing the reciprocating cutting of the cutting blade 31 on the surface of the roller brush 2.

[0045] In this embodiment, a blocking rib 451 is provided on the movement path of the transmission ring 44. The blocking rib 451 is fixed inside the housing 1 and located on the rotation path of the protrusion 441. The function of the blocking rib 451 is to restrict the rotation of the transmission ring 44 around the output shaft of the first motor 41 in the first circumferential direction, so that when the deflection shaft section 43 rotates, the transmission ring 44 cannot rotate synchronously with it, but instead generates a reciprocating oscillation relative to the axial direction of the roller brush 2 under the action of the deflection shaft section 43.

[0046] Specifically, when the output shaft of the first motor 41 rotates, the bushing 42 rotates synchronously, and the deflection shaft section 43, due to its unique deflection angle, has a reciprocating oscillating motion trajectory relative to the output shaft axis L of the first motor 41. Figure 9 The diagram shows the positional relationship of the section S perpendicular to the axis of the deflection shaft 43 when rotated 0° and 180° about the axis L, relative to the output shaft axis L of the first motor 41. Because the transmission ring 44 has a protrusion 441 on its outer circumference, during rotation, the protrusion 441 is blocked by the blocking rib 451 and cannot rotate with the deflection shaft 43. Therefore, under the oscillating action of the rotation surface S of the deflection shaft 43, it can oscillate in the axial direction of the output shaft of the first motor 41. It is this restricted oscillation that drives the connected cutting blade 31 to reciprocate along the surface of the roller brush 2, achieving the cutting of hair.

[0047] Specifically, please refer to Figures 2 to 5 As shown, the cutting assembly 3 also includes a connector 32 connected to the cutting blade 31. The connector 32 has a groove 321, and the protrusion 441 of the transmission ring 44 is inserted into the groove 321. When the output shaft of the first motor 41 moves upward, the protrusion 441 drives the connector 32 and the cutting blade 31 to move through the interference with the groove 321.

[0048] The main structure of the connector 32 is fastened to the cutting blade 31, ensuring that the cutting blade 31 can move synchronously under the drive of the connector 32. A groove 321 is designed on the connector 32, with its opening facing the protrusion 441 of the drive ring 44, and its dimensions matching those of the protrusion 441. This design allows the protrusion 441 to smoothly insert into the groove 321 when the drive ring 44 undergoes axial reciprocating motion.

[0049] When the output shaft of the first motor 41 rotates, the bushing 42 rotates synchronously, driving the deflection shaft section 43 to deflect along a predetermined trajectory. At this time, the transmission ring 44 cannot rotate synchronously due to the limitation of the blocking rib 45, but instead generates a reciprocating motion along the axial direction of the roller brush 2. The protrusion 441 of the transmission ring 44 continuously pushes the connecting member 32 inside the groove 321 in the motion trajectory. Due to the certain interference between the protrusion 441 and the inside of the groove 321, the protrusion 441 can reliably drive the connecting member 32 to move in the axial direction of the roller brush 2 during the movement. The movement of the connecting member 32 directly drives the cutting blade 31 to move synchronously along the surface of the roller brush 2, ensuring that the tangled hair is cut while the roller brush 2 rotates, achieving efficient cleaning.

[0050] Further, please refer to Figure 7 As shown, the size of the groove 321 is larger than the size of the protrusion 441. The inlet side of the groove 321 is preferably gradually reduced in size along the insertion direction of the protrusion 441, forming a tapered insertion port that is wider on the outside and narrower on the inside. This insertion port provides space for the protrusion 441 to swing within the groove 321.

[0051] The tapered insertion port acts as an automatic guide during the insertion of the protrusion 441 into the groove 321. When the transmission ring 44 moves axially, the protrusion 441 does not require extremely high precision alignment with the opening of the groove 321; the tapered inlet gradually converges, smoothly guiding the protrusion 441 into the interior of the groove 321. This design not only reduces the difficulty of alignment during movement but also effectively prevents impacts and wear caused by deviations, thereby improving the durability and smoothness of the entire transmission structure.

[0052] The tapered inlet design also provides a certain degree of motion buffering within the groove 321. When the drive ring 44 reciprocates along the axial direction of the roller brush 2 under the drive of the deflection shaft section 43, the protrusion 441 will oscillate slightly within the groove 321. The structure, wider on the outside and narrower on the inside, effectively absorbs the impact force from this oscillation, avoiding metal fatigue and wear caused by rigid collisions. This buffering effect can significantly extend the service life of the cutting assembly 3 and improve the overall stability of the machine.

[0053] The conical insertion port also has a certain self-adjusting capability. Since the groove 321 is slightly larger than the protrusion 441, a small swing space can be generated inside the groove 321 after the protrusion 441 enters the groove 321. This swing space allows for a certain motion tolerance. Its purpose is that when the cutting assembly 3 reciprocates, if the slightly arc-shaped swing trajectory of the transmission ring 44 causes path instability, the space inside the groove 321 can provide a certain absorption capacity, making the motion trajectory of the cutting assembly 3 smoother and reducing the impact of mechanical vibration.

[0054] Specifically, please refer to Figure 4 and Figure 8 As shown, the cutting blade 31 has a connecting part 311, the connecting part 311 is provided with a positioning hole 312 and a mounting hole 313, the connecting member 32 is provided with a positioning post 322 corresponding to the positioning hole 312 and a screw hole 323 corresponding to the mounting hole 313, the positioning post 322 is inserted into the positioning hole 312, and a screw 33 is screwed into the mounting hole 313 and the screw hole 323.

[0055] In terms of specific structure, the cutting blade 31 has an extended connecting portion 311 on one side, and the connecting portion 311 has a positioning hole 312 and a mounting hole 313. The presence of the positioning hole 312 and the mounting hole 313 allows the cutting blade 31 to be more securely fixed to the connecting member 32, preventing loosening or displacement during high-speed reciprocating motion.

[0056] Corresponding to the positioning holes 312 and mounting holes 313 on the connecting part 311, the main structure of the connector 32 is provided with a positioning post 322 and a screw hole 323 that cooperate with it. The position and size of the positioning post 322 match the positioning holes 312 on the connecting part 311, and the cutting blade 31 and the connector 32 are initially fixed by insertion. The main function of the positioning post 322 is that, during installation, it can quickly align with the positioning holes 312 on the connecting part 311, making assembly faster and more accurate, reducing errors caused by human alignment. The cutting blade 31 experiences significant force during reciprocating motion; if fixed only by screws, it may loosen over time. The positioning post 322 effectively suppresses the rotational deviation of the blade, ensuring its movement trajectory remains stable.

[0057] To further enhance the reliability of the connection, the mounting hole 313 of the connecting part 311 and the screw hole 323 of the connector 32 are reinforced with screws 33. This screw connection design ensures that the two remain tightly connected during high-speed reciprocating motion without loosening. The screw connection not only facilitates installation but also makes subsequent disassembly and maintenance easier. When the equipment needs to replace the blades or be cleaned, disassembly can be completed simply by loosening the screws, without any destructive operation to the overall structure.

[0058] In one exemplary embodiment, please refer to Figure 5 and Figure 8 As shown, the cutting blade 31 is provided with a limiting groove 315 extending along the axial direction of the roller brush 2, and the housing 1 is provided with a limiting protrusion 521 that matches the limiting groove 315, with the limiting protrusion 521 protruding into the limiting groove 315. Through the cooperation of the limiting protrusion 521 and the limiting groove 315, the path of the cutting blade 31 moving along the axial direction of the roller brush 2 is limited.

[0059] Specifically, a limiting groove 315 is provided on the cutting blade 31 along a direction parallel to the axis of the roller brush 2. The extending direction of the limiting groove 315 is parallel to the rotation axis of the roller brush 2, so that the movement trajectory of the cutting blade 31 can always maintain a parallel relationship with the axis of the roller brush 2, ensuring that the blade can closely adhere to the surface of the roller brush 2 for cutting operations.

[0060] Corresponding to the limiting groove 315 is a limiting protrusion 521 installed inside the housing 1. This limiting protrusion 521 is typically made of a high-strength, wear-resistant material. The shape of the limiting protrusion 521 matches the limiting groove 315. When the cutting blade 31 is assembled into the housing 1, the limiting protrusion 521 is embedded in the limiting groove 315, forming a stable mechanical guiding structure. This design ensures that the cutting blade 31 is clearly restricted in its movement, preventing deviation caused by inertia or impact.

[0061] When the drive ring 44 drives the connecting piece 32 to reciprocate, the connecting piece 32 pushes the cutting blade 31 to reciprocate axially in the roller brush 2. The engagement of the limiting groove 315 and the limiting protrusion 521 constrains this movement. Throughout the reciprocating motion, the cutting blade 31 can only move along the direction of the limiting groove 315, avoiding the possibility of wobbling or deviation. Therefore, the blade always maintains close contact with the surface of the roller brush 2, ensuring effective cutting.

[0062] Specifically, please refer to Figure 4 and Figure 8 As shown, a gasket 52 extending axially along the roller brush 2 is fixedly installed inside the housing 1, the cutting blade 31 is supported on the gasket 52, and the limiting protrusion 521 protrudes from the top surface of the gasket 52 toward the limiting groove 315.

[0063] The shim 52 can be made of high-strength and wear-resistant engineering plastics or alloys, which can withstand the impact of the cutting blade 31 during high-speed reciprocating motion, and also reduce wear caused by friction, thus extending its service life. Its surface can be smoothed to ensure that the cutting blade 31 remains smooth and fluid during reciprocating motion, without jamming or jumping. At the same time, the design of the shim 52 extending along the axial direction of the roller brush 2 provides sufficient support for the movement path of the blade, effectively avoiding deviation caused by uneven distribution of force.

[0064] A limiting protrusion 521, integrally formed with the gasket 52, is provided on the top surface of the gasket 52. The limiting protrusion 521 is arranged along the axial direction of the roller brush 2. The height and position of the limiting protrusion 521 are designed to be embedded in the limiting groove 315 of the cutting blade 31. When the cutting blade 31 is assembled onto the gasket 52, the limiting protrusion 521 can be inserted into the limiting groove 315.

[0065] Further, please refer to Figure 2 , Figure 4 and Figure 8 As shown, a limiting piece 6 extending along the axial direction of the roller brush 2 is fixedly installed inside the housing 1, and the cutting blade 31 is disposed between the limiting piece 6 and the gasket 52. The limiting piece 6 and the gasket 52 together define the moving space of the cutting blade 31 to limit the up and down floating of the cutting blade 31 when it moves along the axial direction of the roller brush 2.

[0066] Specifically, the limiting plate 6 is a rigid component fixedly installed inside the housing 1 along the axial direction of the roller brush 2. Its material is generally high-strength metal or engineering plastic to ensure that it does not wear or deform during long-term operation. The purpose of the limiting plate 6 is to constrain the top movement of the cutting blade 31. It forms a clamping space with the pad 52 to firmly clamp the cutting blade 31 therein.

[0067] The pad 52 is arranged at the bottom of the cutting blade 31, opposite to the limiting plate 6, and fixedly installed inside the housing 1. This clamping structure ensures that the cutting blade 31 always maintains parallel contact with the roller brush 2 during high-speed reciprocating motion, and will not float up and down or misalign due to inertia or external forces. In the cutting mechanism of a traditional floor brush, the blade is easily affected by inertial forces during reciprocating motion, resulting in slight floating, which leads to unstable hair cutting effect, and may even cause the blade to collide with the roller brush 2 during high-speed operation. In this embodiment, the limiting plate 6 presses down from above, and the pad 52 supports from below. The double restraint makes the movement trajectory of the blade more stable and precise.

[0068] When the transmission ring 44 drives the connecting piece 32 to push the cutting blade 31 to swing back and forth along the axis of the roller brush 2, the synergistic effect of the limiting piece 6 and the shim 52 can effectively prevent the blade from shifting vertically. Especially under high-speed reciprocating motion, due to the influence of inertia and reaction force, the blade will inevitably be subjected to a certain amount of vibration. The presence of the limiting piece 6 can firmly constrain this vertical vibration within the set space, avoiding affecting the cutting effect on the hair.

[0069] In one exemplary embodiment, please refer to Figure 7As shown, the deflection shaft segment 43 includes a first shaft segment 431 and a second shaft segment 432 with different deflection directions. The cutting assembly 3 includes a first cutting blade 31a and a second cutting blade 31b that are in close contact. The first shaft segment 431 is connected to the first cutting blade 31a, and the second shaft segment 432 is connected to the second cutting blade 31b. The first shaft segment 431 and the second shaft segment 432 are used to drive the first cutting blade 31a and the second cutting blade 31b to move along the axial direction of the output shaft of the first motor 41.

[0070] Specifically, a first transmission ring 44a is sleeved on the first shaft segment 431, and a second transmission ring 44b is sleeved on the second shaft segment 432. The first shaft segment 431 can rotate relative to the first transmission ring 44a, and the second shaft segment 432 can rotate relative to the second transmission ring 44b. The first transmission ring 44a is connected to the first cutting blade 31a, and the second transmission ring 44b is connected to the second cutting blade 31b.

[0071] When the output shaft of the first motor 41 rotates, due to the different deflection directions of the first shaft segment and the second shaft segment, the first transmission ring 44a and the second transmission ring 44b reciprocate in different ways along the axial direction of the output shaft of the first motor 41. This results in different movement directions, strokes, or speeds for the first cutting blade 31a and the second cutting blade 31b during their reciprocating motion. Preferably, the first shaft segment 431 and the second shaft segment 432 are arranged sequentially along the axial direction of the bushing 42. The deflection angles of the first shaft segment 431 and the second shaft segment 432 are the same, and when they rotate, they can drive the first cutting blade 31a and the second cutting blade 31b to move in opposite directions.

[0072] Optionally, in a specific structure, the bushing 42 is connected to the output shaft of the first motor 41, and its surface is provided with a first shaft segment 431 and a second shaft segment 432. The two shaft segments are arranged in a geometric layout with opposite deflection directions and the same deflection angle along the length direction of the bushing 42. The difference in deflection direction means that when the first motor 41 drives the bushing 42 to rotate, the motion trajectories of the first shaft segment 431 and the second shaft segment 432 will produce displacement changes in opposite directions. Driven by the same motor output shaft, two axial swings in different directions are realized, thereby driving the first cutting blade 31a and the second cutting blade 31b to move synchronously in opposite directions.

[0073] To convert the rotational deflection into reciprocating motion along the axis of the roller brush 2, independent first transmission rings 44a and second transmission rings 44b are respectively sleeved on the first shaft segment 431 and the second shaft segment 432. Driven by the first motor 41, they oscillate back and forth by the thrust of the deflection trajectory. The outer circumferential surfaces of the first transmission rings 44a and 44b are provided with protrusions 441, and are equipped with corresponding limiting structures, such as single-sided blocking ribs 451 or sliding groove limiting devices, to ensure that they always move along the axial direction and do not rotate with the bushing 42 around the output shaft of the first motor 41.

[0074] When the first motor 41 starts, the bushing 42 drives two shaft segments with different deflection directions to rotate synchronously. The first transmission ring 44a on the first shaft segment 431 will reciprocate in one way, while the second transmission ring 44b on the second shaft segment 432 will reciprocate in another way. This different motion mode is directly transmitted to the first cutting blade 31a and the second cutting blade 31b. The first cutting blade 31a and the second cutting blade 31b are connected to their respective transmission rings 44 by the connector 32 and are arranged close to the surface of the roller brush 2. When the transmission rings 44 reciprocate, the two blades will move alternately in opposite directions, similar to the cutting effect of scissors, continuously rubbing against the surface of the roller brush 2 and cutting the tangled hair during its rotation. The reverse oscillation design effectively prevents the hair from repeatedly tangling. While one blade pushes the hair off the roller brush 2, the other blade can simultaneously perform a second cut, thereby achieving a more thorough cleaning effect.

[0075] Multiple deflection shaft segments 43 can be set on the output shaft of the first motor 41. By adjusting the deflection angle and the position of the protrusion 441, one motor can drive multiple cutting blades 31 with different strokes to move simultaneously.

[0076] Specifically, please refer to Figure 5 and Figure 7 As shown, the deflection shaft section 43 is rotatably connected to the transmission ring 44 via the bearing 46 to improve the flexibility of the deflection shaft section 43 in rotating relative to the transmission ring 44. The cutting blade 31 has a comb-shaped cutting edge 314 on the side close to the roller brush 2. The comb-shaped cutting edge 314 is used to increase the contact area with the hair wrapped around the surface of the roller brush 2, and can also comb the hair before cutting to improve the cutting effect.

[0077] As a rolling friction component, bearing 46 can significantly reduce friction during movement, allowing the deflection shaft section 43 to rotate more flexibly and smoothly relative to the transmission ring 44. At the same time, the high rotational flexibility of bearing 46 prevents the deflection shaft section 43 from twisting and pulling on the transmission ring 44 during high-speed operation, reducing running resistance and improving the smoothness and durability of the transmission.

[0078] The comb-like cutting blade 314 not only increases the contact area with the hair, but also serves to comb and position it. When the roller brush 2 rotates, the hair is usually tightly tangled, making it difficult for a straight blade to penetrate completely. The comb-like structure can better penetrate the tangled area, lifting the hair onto the cutting path of the blade and improving the cutting effect.

[0079] In one exemplary embodiment, please refer to Figure 2 As shown, the floor brush also includes a second drive assembly 7 for driving the roller brush 2 to rotate. The second drive assembly 7 includes a second motor 71, a track transmission mechanism 72 and a roller 73. The output shaft of the second motor 71 is connected to the roller 73 through the track transmission mechanism 72. The roller 73 is aligned with the roller brush 2 along the axial direction of the roller brush 2.

[0080] One end of the track drive mechanism 72 is connected to the output shaft of the second motor 71, while the other end is connected to the roller 73. The roller 73 is arranged along the axial direction of the roller brush 2 and precisely engages with the internal transmission structure of the roller brush 2. When the second motor 71 is running, the track drive smoothly transmits the rotational motion of the motor to the roller 73, and the synchronous rotation of the roller 73 directly drives the roller brush 2 to rotate at high speed within the roller brush cavity 11.

[0081] This disclosure also provides a cleaning device including a body and the aforementioned floor brush attached to the body.

[0082] Specifically, the main structure of this cleaning equipment consists of a body and a floor brush. The floor brush integrates the aforementioned first and second drive components, responsible for the reciprocating motion of the cutting blades and the rotational cleaning of the roller brush, respectively. In operation, the first drive component, through the linkage between the deflection shaft and the transmission ring, drives the cutting blades to cut back and forth along the surface of the roller brush, effectively removing hair entanglement. The second drive component, through an independent second motor and a track transmission mechanism, transmits stable power to the roller brush, achieving continuous high-speed rotational cleaning, allowing dust and debris to be quickly adsorbed and transported to the dust collection chamber.

[0083] In summary, the floor brush and cleaning device provided in this disclosure converts rotational motion into axial reciprocating motion through the linkage between the deflection shaft and the transmission ring, driving the cutting blade to achieve efficient shearing of tangled hair. This structure not only simplifies the drive system and reduces mechanical complexity, but also significantly improves the efficiency of hair cleaning, avoids the cleaning problem of frequent tangling of traditional floor brushes, reduces the frequency of manual maintenance by users, and improves the user experience.

[0084] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0085] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A floor brush, characterized in that, include: The housing has a brush chamber; A roller brush is rotatably disposed within the roller brush cavity; A cutting assembly is disposed in the housing, the cutting assembly including at least one cutting blade disposed near the surface of the roller brush; The first drive assembly includes a first motor and a deflection shaft segment connected to the output shaft of the first motor and capable of rotating with the output shaft of the first motor. The axis of the deflection shaft segment forms a first deflection angle with the axis of the output shaft of the first motor, and the deflection shaft segment is connected to the cutting blade. When the deflection shaft rotates, it can drive the cutting blade to reciprocate along the axial direction of the output shaft of the first motor.

2. The floor brush according to claim 1, characterized in that, A transmission ring is sleeved on the deflection shaft section, and the deflection shaft section can rotate relative to the transmission ring. The transmission ring is connected to the cutting blade, and a blocking member is provided on one side of the transmission ring to limit the rotation of the transmission ring around the output shaft of the first motor.

3. The floor brush according to claim 2, characterized in that, The outer circumferential surface of the transmission ring extends radially outward to form a protrusion. The blocking member includes a blocking rib, which is disposed on the rotation path of the protrusion to restrict the transmission ring from rotating around the output shaft of the first motor.

4. The floor brush according to claim 3, characterized in that, The cutting assembly also includes a connector connected to the cutting blade, the connector having a groove, and the protrusion of the transmission ring being inserted into the groove.

5. The floor brush according to claim 4, characterized in that, The size of the groove is larger than the size of the protrusion, and / or the size of the groove at the entrance gradually decreases along the insertion direction of the protrusion.

6. The floor brush according to claim 4, characterized in that, The cutting blade has a connecting part, which is provided with a positioning hole and a mounting hole. The connecting part is provided with a positioning post corresponding to the positioning hole and a screw hole corresponding to the mounting hole. The positioning post is inserted into the positioning hole, and screws are screwed into the mounting hole and the screw hole.

7. The floor brush according to claim 1, characterized in that, The cutting blade is provided with a limiting groove extending along the axial direction of the roller brush, and the housing is provided with a limiting protrusion that matches the limiting groove, the limiting protrusion extending into the limiting groove.

8. The floor brush according to claim 7, characterized in that, A gasket extending axially along the roller brush is fixedly installed inside the housing. The cutting blade is supported on the gasket, and the limiting protrusion protrudes from the top surface of the gasket toward the limiting groove.

9. The floor brush according to claim 8, characterized in that, A limiting piece extending along the axial direction of the roller brush is fixedly installed inside the housing. The cutting blade is disposed between the limiting piece and the gasket. The limiting piece and the gasket together define the moving space of the cutting blade.

10. The floor brush according to claim 1, characterized in that, The deflection shaft segment includes a first shaft segment and a second shaft segment with different deflection directions. The cutting assembly includes a first cutting blade and a second cutting blade that are in close contact. The first shaft segment is connected to the first cutting blade, and the second shaft segment is connected to the second cutting blade. The first shaft segment and the second shaft segment are used to drive the first cutting blade and the second cutting blade to move along the axial direction of the output shaft of the first motor.

11. The floor brush according to claim 10, characterized in that, A first transmission ring is sleeved on the first shaft segment, and a second transmission ring is sleeved on the second shaft segment. The first shaft segment can rotate relative to the first transmission ring, and the second shaft segment can rotate relative to the second transmission ring. The first transmission ring is connected to the first cutting blade, and the second transmission ring is connected to the second cutting blade.

12. The floor brush according to claim 10, characterized in that, The first shaft segment and the second shaft segment have the same deflection angle, and the first shaft segment and the second shaft segment are used to drive the first cutting blade and the second cutting blade to move in opposite directions.

13. The floor brush according to claim 2, characterized in that, The deflection shaft section is rotatably connected to the transmission ring via a bearing; and / or The cutting blade has a comb-shaped cutting edge on the side close to the roller brush.

14. A cleaning device, characterized in that, It includes a body and a floor brush attached to the body as described in any one of claims 1 to 13.

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