Single-source double-brush split drive system

Abstract

The utility model relates to cleaning equipment technical field and disclose a single source double -faced brush partial -drive type drive system, including the casing, the inside installation of casing has drive motor and rolling brush axle, and drive motor is connected through the band transmission subassembly between the output of rolling brush axle, still be provided with gear box in the casing, the support axle is set up along longitudinal activity in gear box, the support axle is connected through gear transmission mechanism between rolling brush axle, the upper end of support axle is provided with spring between gear box, and the lower extreme of support axle extends to the casing outside and is connected with the side brush subassembly. Rolling brush and side brush subassembly are driven rotary work by same drive motor, need not increase motor and reach the purpose of ground cleaning and wall side cleaning simultaneously, guarantee better local cleaning effect, the support axle is designed as the slidable structure of axial, under the action of spring, ensure that side brush subassembly always presses down and fits on the ground, ensure the effect of wall side cleaning.

Description

Technical Field

[0001] This utility model relates to the field of cleaning technology, specifically to a single-source dual-brush split-drive system. Background Technology

[0002] The roller brush and side brush components in the floor brush structure of a vacuum cleaner are key components for achieving efficient cleaning. The two complement each other and are designed for different cleaning scenarios. The roller brush is used for cleaning large areas, while the side brush components are used for cleaning details and hard-to-reach corners. The combination of the two allows the vacuum cleaner to efficiently handle large spaces while also taking care of edge details, which can significantly improve cleaning efficiency and thoroughness.

[0003] Currently, in the existing vacuum cleaner floor brush structures on the market, the roller brush and side brush components are each equipped with a separate drive motor, which means that two power sources are needed to drive the roller brush and side brush components respectively. This not only occupies more space inside the floor brush and affects the normal working space, but also makes the wiring more complicated and increases the difficulty of control. At the same time, for cleaning surfaces with different thicknesses or unevenness, the existing technology will cause the side brush components to be suspended and unable to clean.

[0004] Therefore, there is an urgent need to propose a drive system suitable for vacuum cleaner floor brushes, so that the roller brush and side brush assemblies can share a single power source to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a single-source dual-brush split-drive system in which the side brush assembly and the roller brush are driven by the same motor, simplifying the structure. The side brush assembly can float along the axial direction to ensure that it always fits the cleaning surface and adapts to carpets of different thicknesses or uneven floors.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A single-source dual-brush split-drive system includes a housing. A drive motor and a roller brush shaft are installed inside the housing. The output end of the drive motor is connected to the roller brush shaft via a belt drive assembly. A gearbox is also provided inside the housing. A support shaft is movably mounted on the gearbox along its longitudinal direction. The support shaft is connected to the roller brush shaft via a gear transmission mechanism. A spring is provided between the upper end of the support shaft and the gearbox. The lower end of the support shaft extends to the outside of the housing and is connected to a side brush assembly.

[0008] Optionally, the side brush assembly has a slot, and a magnet is installed at the bottom of the slot. The lower end of the support shaft is inserted into the slot and then comes into contact with and is attracted to the magnet.

[0009] Optionally, the slot is an anti-rotation groove, and the lower contour of the support shaft corresponds to the anti-rotation groove.

[0010] Optionally, a mounting groove is provided on the top of the inner side of the gearbox, the spring is disposed in the mounting groove, and the spring, the mounting groove and the bracket shaft are coaxial.

[0011] Optionally, the gear transmission mechanism includes a driving gear set and a driven bevel gear. The driving gear set is coaxially connected to the roller brush shaft. The driven bevel gear is rotatably mounted in the gearbox. The support shaft passes through the driven bevel gear. The driven bevel gear and the driving gear set are sequentially connected through a primary intermediate gear set and a secondary intermediate gear set.

[0012] Optionally, the drive wheel assembly includes a first gear fixedly connected to the roller brush shaft, and a second gear is coaxially arranged at one end of the first gear opposite to the roller brush shaft, and the second gear is meshed with the primary intermediate wheel assembly.

[0013] Optionally, the primary intermediate gear set includes a third gear that meshes with the second gear, and the end of the third gear is coaxially provided with a driving bevel gear that meshes with the secondary intermediate gear set.

[0014] Optionally, the secondary intermediate gear set includes a connecting shaft passing through the gearbox, with intermediate bevel gears fixedly installed at both ends of the connecting shaft. The outer intermediate bevel gear meshes with the driving bevel gear, and the inner intermediate bevel gear meshes with the driven bevel gear.

[0015] Optionally, the axes of the primary intermediate rotating wheel assembly and the support shaft are both perpendicular to the axis of the connecting shaft, and the axis of the primary intermediate rotating wheel assembly is perpendicular to the axis of the support shaft in a different plane.

[0016] Optionally, the pitch circle diameter of the third gear is larger than that of the second gear.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] (1) In this utility model, the drive motor drives the roller brush shaft to rotate through the belt transmission assembly, thereby driving the roller brush to rotate. At the same time, the roller brush shaft drives the bracket shaft to rotate through the gear transmission mechanism, thereby driving the side brush assembly to rotate. That is, the roller brush and the side brush assembly are driven to rotate by the same drive motor, without the need to add a motor to achieve the purpose of cleaning the ground and cleaning the wall at the same time, thus ensuring a better local cleaning effect.

[0019] (2) In this utility model, the bracket shaft is designed as an axially sliding structure. Under the action of the spring, it can adapt to carpets of different thicknesses or uneven ground, ensuring that the side brush assembly is always pressed down and attached to the ground, ensuring the cleaning effect of the wall side;

[0020] (3) In this utility model, the side brush assembly is connected to the bracket shaft by magnetic attraction, making the side brush assembly easier to disassemble and replace. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the single-source dual-brush split-drive system in an embodiment of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the single-source dual-brush split-drive system in this embodiment of the present invention;

[0023] Figure 3 This is an exploded structural diagram of the single-source dual-brush split-drive system in an embodiment of this utility model;

[0024] Figure 4 This is a schematic diagram of the assembly structure of the bracket shaft and the side brush assembly in an embodiment of this utility model;

[0025] The components include: 1. housing; 2. drive motor; 3. roller brush shaft; 4. belt drive assembly.

[0026] 5. Drive gear assembly; 501. First gear; 502. Second gear;

[0027] 6. First-stage intermediate gear set; 601. Third gear; 602. Driving bevel gear; 7. Gearbox;

[0028] 8. Secondary intermediate transfer gear set; 801. Connecting shaft; 802. Intermediate transfer bevel gear;

[0029] 9. Support shaft; 10. Driven bevel gear; 11. Side brush assembly; 12. Roller brush body; 13. Spring; 14. Magnet block. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0031] like Figures 1-4 As shown, a single-source dual-brush split-drive system includes a housing 1, a drive motor 2, a roller brush shaft 3, a gear transmission mechanism, a belt transmission assembly 4, a gearbox 7, and a support shaft 9. The drive motor 2, roller brush shaft 3, gear transmission mechanism, belt transmission assembly 4, and gearbox 7 are all installed inside the housing 1. One end of the roller brush shaft 3 is connected to the roller brush body 12, and the other end is connected to the output end of the drive motor 2 through the belt transmission assembly 4. The support shaft 9 is longitudinally mounted on the gearbox 7 and is connected to the roller brush shaft 3 through the gear transmission mechanism. The lower end of the support shaft 9 extends to the outside of the housing 1 and is connected to the side brush assembly 11.

[0032] The support shaft 9 is perpendicular to the top and bottom surfaces of the gearbox 7. The drive motor 2 drives the roller brush shaft 3 to rotate through the belt transmission assembly 4, which in turn drives the roller brush body 12 to rotate. At the same time, the roller brush shaft 3 drives the support shaft 9 to rotate through the gear transmission mechanism, which in turn drives the side brush assembly 11 to rotate. That is, the roller brush body 12 and the side brush assembly 11 are driven to rotate by the same drive motor 2 (power source). This system can achieve the purpose of floor cleaning and wall cleaning without adding an extra motor, ensuring better local cleaning effect.

[0033] Specifically, the housing 1 has a partition inside, which divides the inner cavity of the housing 1 into a transmission area and a cleaning area. The drive motor 2, the roller brush shaft 3 and the gear transmission mechanism are all connected to the partition. The drive motor 2 and the roller brush body 12 are located in the cleaning area, the gear transmission mechanism with transmission component 4 and gearbox 7 are located in the transmission area, and the roller brush shaft 3 passes through the partition, with its two ends connected to the roller brush body 12 and the gear transmission mechanism, respectively.

[0034] The belt drive assembly 4 includes a driving pulley, a driven pulley, and a synchronous belt. The driving pulley is installed at the output end of the drive motor 2, and the driven pulley is installed at one end of the roller brush shaft 3 located in the transmission area. The synchronous belt is fitted onto the driving pulley and the driven pulley, and the outer diameter of the driving pulley is smaller than the outer diameter of the driven pulley.

[0035] The torque output by the drive motor 2 is transmitted to the roller brush shaft 3 in sequence through the driving pulley, the synchronous belt and the driven pulley. The belt drive structure is a speed reduction transmission, which can provide a sufficiently large torque to the roller brush shaft 3 to drive the roller brush body 12 to rotate.

[0036] As described above, a mounting groove is provided on the top of the inner side of the gearbox 7, and a spring 13 is installed in the mounting groove. The bracket shaft 9 slides axially through the bottom of the gearbox 7, with its upper end embedded in the mounting groove and abutting against the end of the spring 13. Its lower end passes through the bottom of the gearbox 7 and the housing 1 and is connected to the side brush assembly 11. The spring 13, the mounting groove and the bracket shaft 9 are coaxial.

[0037] The bracket shaft 9 here is designed as an axially sliding structure. Under the action of the spring 13, it ensures that the side brush assembly 11 is always pressed down and attached to the ground. It floats up and down through the cooperation with the spring 13 to adapt to carpets of different thicknesses or uneven ground, ensuring the cleaning effect of the wall.

[0038] When encountering a raised surface, the ground exerts a thrust on the side brush assembly 11 onto the support shaft 9, causing it to compress the spring 13 and move upward. When encountering a recessed surface, the spring 13 exerts a thrust on the support shaft 9, causing it to push the side brush assembly 11 downward, ensuring that the side brush assembly 11 is always pressed down and adhered to the ground.

[0039] Furthermore, the top of the side brush assembly 11 has a slot, and a magnet 14 is fixedly installed at the bottom of the slot. After the lower end of the support shaft 9 is inserted into the slot, it contacts and attracts the magnet 14. Here, the support shaft 9 is made of a material that can attract magnets. The side brush assembly 11 is connected to the support shaft 9 by magnetic attraction, making the side brush assembly 11 easier to disassemble and replace, thus improving the user experience.

[0040] When the magnet 14 is attracted to the bracket shaft 9, it is necessary to ensure that the torque of the bracket shaft 9 can be better transmitted to the side brush assembly 11, so that the side brush assembly 11 can rotate synchronously. Therefore, the slot is designed as a rotation-stopping groove structure, and the lower contour of the bracket shaft 9 corresponds to the rotation-stopping groove.

[0041] For example, a notch is provided on the outer side of the lower end of the bracket shaft 9. The slot has the same outer contour as the bracket shaft 9, and a boss corresponding to the notch is provided in the slot. This can not only limit the installation of the side brush assembly 11, but also transmit torque through the contact between the notch and the side of the boss. Moreover, during disassembly and assembly, the side brush assembly 11 can be pulled out along the axial direction or put on the lower part of the bracket shaft 9.

[0042] In addition, the gear transmission mechanism includes a driving gear set 5, a first-stage intermediate gear set 6, a second-stage intermediate gear set 8, and a driven bevel gear 10. The driven bevel gear 10 is rotatably mounted inside the gearbox 7. The support shaft 9 is axially movably inserted into the inner hole of the driven bevel gear 10. The driving gear set 5 is coaxially connected to the brush shaft 3. The first-stage intermediate gear set 6 is rotatably mounted on the partition plate and meshes with the driving gear set 5. The second-stage intermediate gear set 8 is inserted into the side wall of the gearbox 7, such that the outer end of the second-stage intermediate gear set 8 meshes with the first-stage intermediate gear set 6, and the inner end meshes with the driven bevel gear 10.

[0043] Among them, the support shaft 9 adopts a stepped shaft structure, and it has a limit structure at the bottom of the housing 1 to prevent it from falling out of the housing 1; the support shaft 9 passes through the driven bevel gear 10, and the driven bevel gear 10 can be rotatably installed inside the gearbox 7 through the bearing. At this time, the driven bevel gear 10 can drive the support shaft 9 to rotate through the anti-rotation structure, and the support shaft 9 can also move axially relative to the driven bevel gear 10.

[0044] Specifically, there is a certain gap between the anti-rotation part (with a notch on the outside of the shaft) of the support shaft 9 and the corresponding inner hole of the driven bevel gear 10. This gap does not affect the synchronous rotation of the support shaft 9 and the driven bevel gear 10, while ensuring the axial movement of the support shaft 9 relative to the driven bevel gear 10.

[0045] The drive gear set 5 includes a first gear 501 and a second gear 502, both of which are coaxial with the roller brush shaft 3. The first gear 501 is fixedly connected to the roller brush shaft 3, and the second gear 502 is fixedly installed at one end of the roller brush shaft 3 opposite to the first gear 501.

[0046] The first-stage intermediate gear set 6 includes a third gear 601 and a driving bevel gear 602, which are coaxial. The third gear 601 is rotatably mounted on the partition plate, and the driving bevel gear 602 is fixedly mounted on one end of the partition plate opposite to the third gear 601.

[0047] The secondary intermediate gear set 8 includes a connecting shaft 801, with intermediate bevel gears 802 fixedly installed at both ends of the connecting shaft 801. The intermediate bevel gears 802 are coaxial with the connecting shaft 801, and the connecting shaft 801 passes through the gearbox 7. The two intermediate bevel gears 802 mesh with the driving bevel gear 602 and the driven bevel gear 10, respectively.

[0048] Specifically, the second gear 502 meshes with the third gear 601, the driving bevel gear 602 meshes with the intermediate bevel gear 802 on the outside of the gearbox 7, and the driven bevel gear 10 meshes with the intermediate bevel gear 802 on the inside of the gearbox 7. The meshing transmission of the two bevel gears on the outside of the gearbox 7 makes the gears less susceptible to heat, extends their service life, and makes them easier to maintain and replace.

[0049] The torque of the drive motor 2 is transmitted to the roller brush shaft 3 via belt drive. Part of the torque is transmitted to the roller brush body 12 via the roller brush shaft 3, and the other part is transmitted to the side brush assembly 11 via the roller brush shaft 3, the first gear 501, the second gear 502, the third gear 601, the driving bevel gear 602, the external intermediate bevel gear 802, the connecting shaft 801, the internal intermediate bevel gear 802, the driven bevel gear 10, and the bracket shaft 9.

[0050] The axes of the active bevel gear 602 and the support shaft 9 are both perpendicular to the axis of the connecting shaft 801. The axis of the active bevel gear 602 is perpendicular to the axis of the support shaft 9 in opposite planes, and the axis of the active bevel gear 602 is parallel to the axis of the roller brush shaft 3. That is, the active wheel set 5 provides lateral rotational force to drive the first-stage intermediate wheel set 6. The first-stage intermediate wheel set 6 and the second-stage intermediate wheel set 8 rotate laterally by 90° through bevel gear meshing. The second-stage intermediate wheel set 8 and the driven bevel gear 10 rotate laterally by 90° through bevel gear meshing, and the rotational force rotates 90° longitudinally. Finally, the support shaft 9 drives the side brush assembly 11 to rotate.

[0051] The pitch circle diameter of the second gear 502 is smaller than that of the first gear 501. The end face of the first gear 501 can provide a positioning reference for the installation of the second gear 502. The pitch circle diameter of the third gear 601 is larger than that of the second gear 502, which realizes speed reduction transmission, thereby increasing the torque obtained by the side brush assembly 11 and improving its cleaning power for corner dirt.

[0052] Working principle:

[0053] The drive motor 2 drives the roller brush shaft 3 to rotate via the belt drive assembly 4. The roller brush shaft 3 then drives the roller brush body 12 to rotate. At the same time, the roller brush shaft 3 also transmits torque to the side brush assembly 11 via the first gear 501, the second gear 502, the third gear 601, the driving bevel gear 602, the external intermediate bevel gear 802, the connecting shaft 801, the internal intermediate bevel gear 802, the driven bevel gear 10, and the support shaft 9. The roller brush body 12 and the side brush assembly 11 are driven to rotate by the same drive motor 2, which can achieve the purpose of floor cleaning and wall cleaning without adding an additional motor, ensuring better local cleaning effect.

[0054] The bracket shaft 9 is designed with an axially sliding structure. Under the action of the spring 13, it ensures that the side brush assembly 11 is always pressed down and attached to the ground. It floats up and down through the cooperation with the spring 13 to adapt to carpets of different thicknesses or uneven ground, ensuring the cleaning effect of the wall.

[0055] In summary, this invention proposes a single-source dual-brush split-drive system, in which a single power source simultaneously drives the side brush and roller brush to rotate. The side brush rotation is achieved by converting the lateral driving force by 90° into a longitudinal force, thus reducing the high lateral rotational speed to a low speed. The support shaft 9 is axially slidable to ensure that the side brush assembly 11 is always pressed down and in contact with the ground. Furthermore, the side brush assembly 11 is magnetically connected to the support shaft 9, making it easier to disassemble and replace, thus improving the user experience.

[0056] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0057] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0058] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A single-source dual-brush split-drive system, comprising a housing (1), wherein a drive motor (2) and a roller brush shaft (3) are installed inside the housing (1), and the output end of the drive motor (2) is connected to the roller brush shaft (3) via a belt drive assembly (4), characterized in that: The housing (1) is also provided with a gearbox (7), and a support shaft (9) is movably inserted through the gearbox (7) along the longitudinal direction. The support shaft (9) is connected to the roller brush shaft (3) through a gear transmission mechanism. A spring (13) is provided between the upper end of the support shaft (9) and the gearbox (7), and the lower end of the support shaft (9) extends to the outside of the housing (1) and is connected to a side brush assembly (11).

2. The single-source dual-brush split-drive system according to claim 1, characterized in that: The side brush assembly (11) has a slot, and a magnet (14) is installed at the bottom of the slot. The lower end of the support shaft (9) is inserted into the slot and then comes into contact with and is attracted to the magnet (14).

3. The single-source dual-brush split-drive system according to claim 2, characterized in that: The slot adopts an anti-rotation groove, and the lower contour of the support shaft (9) corresponds to the anti-rotation groove.

4. The single-source dual-brush split-drive system according to claim 3, characterized in that: The gearbox (7) has an installation groove on the top of its inner side. The spring (13) is located in the installation groove, and the spring (13), the installation groove and the bracket shaft (9) are coaxial.

5. The single-source dual-brush split-drive system according to claim 1, characterized in that: The gear transmission mechanism includes a drive gear set (5) and a driven bevel gear (10). The drive gear set (5) is coaxially connected to the roller brush shaft (3). The driven bevel gear (10) is rotatably installed in the gearbox (7). The support shaft (9) passes through the driven bevel gear (10). The driven bevel gear (10) and the drive gear set (5) are connected in sequence through a first-stage intermediate gear set (6) and a second-stage intermediate gear set (8).

6. The single-source dual-brush split-drive system according to claim 5, characterized in that: The drive wheel assembly (5) includes a first gear (501) fixedly connected to the roller brush shaft (3). A second gear (502) is coaxially arranged at one end of the first gear (501) opposite to the roller brush shaft (3), and the second gear (502) meshes with the first-stage intermediate wheel assembly (6).

7. The single-source dual-brush split-drive system according to claim 6, characterized in that: The first-stage intermediate gear set (6) includes a third gear (601) that meshes with the second gear (502), and the end of the third gear (601) is coaxially provided with a driving bevel gear (602) that meshes with the second-stage intermediate gear set (8).

8. The single-source dual-brush split-drive system according to claim 7, characterized in that: The secondary intermediate gear set (8) includes a connecting shaft (801) passing through the gearbox (7). Both ends of the connecting shaft (801) are fixedly installed with intermediate bevel gears (802), and the outer intermediate bevel gear (802) meshes with the driving bevel gear (602), while the inner intermediate bevel gear (802) meshes with the driven bevel gear (10).

9. The single-source dual-brush split-drive system according to claim 8, characterized in that: The axes of the primary intermediate rotating wheel assembly (6) and the support shaft (9) are both perpendicular to the axis of the connecting shaft (801), and the axis of the primary intermediate rotating wheel assembly (6) is perpendicular to the axis of the support shaft (9) in opposite planes.

10. The single-source dual-brush split-drive system according to claim 9, characterized in that: The pitch circle diameter of the third gear (601) is greater than that of the second gear (502).

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