Floor brush device

Abstract

The utility model discloses a floor brush device which comprises a shell, a first rolling brush, a second rolling brush, a motor and a transmission mechanism, wherein the first rolling brush and the second rolling brush are adjacently distributed front and back; the motor simultaneously drives the first rolling brush and the second rolling brush to rotate; the transmission mechanism comprises a bracket assembly formed by assembling a motor bracket and a motor bracket cover, and a first rolling brush transmission shaft and a second rolling brush transmission shaft which are rotationally supported on the bracket assembly; the first rolling brush transmission wheel is fixedly arranged at one shaft end of the first rolling brush transmission shaft and is fixedly connected with the first rolling brush; the second rolling brush transmission wheel is fixedly arranged at one shaft end of the second rolling brush transmission shaft and is fixedly connected with the second rolling brush; the motor support is provided with a left side wall part and a right side wall part which are oppositely arranged, the two shaft ends of the first rolling brush transmission shaft are assembled on the left side wall part and the motor support cover respectively, the two shaft ends of the second rolling brush transmission shaft are assembled on the left side wall part and the right side wall part respectively, and the motor support is an integrally-injection-molded component.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cleaning equipment, in particular to a floor brush device for a vacuum cleaner. BACKGROUND

[0002] In the floor brush device of the vacuum cleaner, there is a kind of floor brush device adopting a double-roller brush structure, that is, two roller brushes driven by one motor; the floor brush device realizes efficient cleaning through the double-roller brush.

[0003] In the double-roller brush floor brush device driven by the gear assembly, the conventional gear box is composed of a gear box upper cover and a gear box lower cover, and since the gear box upper cover and the gear box lower cover are two separate parts, the concentricity of the shafts assembled on the upper cover and the lower cover cannot be guaranteed, especially in the double-roller brush gear box, the intermediate gear bears a large torque, and if the concentricity does not meet the requirements, the motor load will be too large and the noise will exceed the standard. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a floor brush device capable of effectively guaranteeing the concentricity of the roller brush shafts.

[0005] The utility model adopts the following technical scheme: a floor brush device, comprising a shell, first and second roller brushes distributed adjacent to each other in front and back, a motor for simultaneously driving the first and second roller brushes to rotate, and a transmission mechanism arranged between the motor and the first and second roller brushes, the radius of the second roller brush being greater than that of the first roller brush; the transmission mechanism comprises a bracket assembly composed of a motor bracket and a motor bracket cover, first and second roller brush transmission shafts rotatably supported on the bracket assembly, a first roller brush transmission wheel fixed to one shaft end of the first roller brush transmission shaft, and a second roller brush transmission wheel fixedly installed at one shaft end of the second roller brush transmission shaft, the first roller brush transmission wheel being configured to be fixedly coupled with the first roller brush, and the second roller brush transmission wheel being configured to be fixedly coupled with the second roller brush; the motor bracket has a left side wall portion close to the first and second roller brushes and a right side wall portion away from the first and second roller brushes, both shaft ends of the first roller brush transmission shaft are assembled on the left side wall portion and the motor bracket cover respectively, and both shaft ends of the second roller brush transmission shaft are assembled on the left side wall portion and the right side wall portion respectively, wherein the motor bracket is an integrally injection-molded component.

[0006] In the technical scheme, preferably, the output shaft of the motor is supported on the motor support, the output shaft is provided with a motor gear, the second roller brush transmission shaft is supported with a large gear, and the motor gear and the large gear are provided with a first synchronous belt.

[0007] In the technical scheme, preferably, the first roller brush transmission shaft is supported with a small gear, and the small gear and the large gear are provided with a second synchronous belt.

[0008] In the technical scheme, preferably, the two shaft ends of the first roller brush transmission shaft are respectively provided with a first bearing and a second bearing between the motor support and the motor support cover.

[0009] In the technical scheme, preferably, the two shaft ends of the second roller brush transmission shaft are respectively provided with a third bearing and a fourth bearing between the motor support.

[0010] In the technical scheme, preferably, the motor support cover and the motor support are fixedly connected through a plurality of screws.

[0011] In the technical scheme, preferably, the plurality of screws are evenly distributed around the axis of the first roller brush transmission shaft.

[0012] In the technical scheme, preferably, the first roller brush has a first length measured in the axial direction, and the second roller brush has a second length measured in the axial direction, and the first length is greater than the second length.

[0013] In the technical scheme, preferably, the second roller brush transmission wheel and the first roller brush transmission wheel are located on the same side of the motor support.

[0014] In the floor brush device of the application, the motor support is as large as possible to be injection molded as a single part, and the two ends of the second roller brush transmission shaft which bears a large torque are assembled on the motor support, which can greatly ensure the concentricity of the shaft, thereby avoiding the occurrence of excessive motor load and excessive noise. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A top view schematic diagram of a floor brush device provided by the embodiment of the application;

[0016] Figure 2 A three-dimensional structure schematic diagram of the motor and the transmission mechanism assembly in Figure 1 ;

[0017] Figure 3 An internal structure schematic diagram of the motor and the transmission mechanism assembly in Figure 2 ;

[0018] Wherein: 10, the shell; 20, the first roller brush; 30, the second roller brush; 40, the motor; 50, the transmission mechanism; 1, the support assembly; 11, the motor support; 111, the left side wall part; 112, the right side wall part; 12, the motor support cover; 13, the screw; 2, the first roller brush transmission shaft; 21, the first bearing; 22, the second bearing; 3, the first roller brush transmission wheel; 4, the second roller brush transmission shaft; 41, the third bearing; 42, the fourth bearing; 5, the second roller brush transmission wheel; 61, the output shaft; 62, the motor gear; 63, the large gear; 64, the first synchronous belt; 65, the small gear; 66, the second synchronous belt. DETAILED DESCRIPTION

[0019] To describe the technical contents, structural features, purposes and effects of the present application in detail, the technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments.

[0020] In the following description, for the purpose of explanation, numerous specific details are set forth in order to provide a thorough understanding of various exemplary embodiments or implementations of the present application. However, it is apparent that various exemplary embodiments can be practiced without these specific details, or in an implementation that is different from one or more of the specific details. In other instances, various exemplary embodiments can be different from what is described in the following written description, but nevertheless, within the scope of the present application.

[0021] The embodiment of the present application provides a floor brush device, which is used for moving back and forth on the ground to clean the ground.

[0022] As Figure 1 shown, the floor brush device comprises a shell 10, a first roller brush 20 and a second roller brush 30 which are adjacent to each other in front and back, a motor 40 which drives the first roller brush 20 and the second roller brush 30 to rotate at the same time, and a transmission mechanism 50 which is arranged between the motor 40 and the first roller brush 20 and the second roller brush 30, wherein the radius of the second roller brush 30 is greater than the radius of the first roller brush 20, the first roller brush 20 and the second roller brush 30 are parallel to each other, and both extend in the left-right direction. In the embodiment of the present application, the first roller brush 20 and the second roller brush 30 rotate in the same rotational direction under the driving of the motor 40, and in other embodiments, the first roller brush 20 and the second roller brush 30 can rotate in different rotational directions under the driving of the motor 40.

[0023] As Figure 2 , 3As shown, the transmission mechanism 50 comprises the bracket assembly 1, the first roller brush transmission shaft 2, the first roller brush transmission wheel 3, the second roller brush transmission shaft 4 and the second roller brush transmission wheel 5. The first roller brush transmission shaft 2 and the second roller brush transmission shaft 4 are both rotationally supported on the bracket assembly 1. The first roller brush transmission wheel 3 is coaxially fixed on one end of the first roller brush transmission shaft 2 and fixedly coupled with the first roller brush 20. The second roller brush transmission wheel 5 is coaxially fixed on one end of the second roller brush transmission shaft 4 and fixedly coupled with the second roller brush 30. The first roller brush transmission wheel 3 and the second roller brush transmission wheel 5 are located on the same side of the bracket assembly 1. The first roller brush transmission shaft 2 and the second roller brush transmission shaft 4 are both in transmission connection with the motor 40 and rotate simultaneously under the driving of the motor 40. In order to improve the transmission efficiency and stability between each transmission shaft and the corresponding roller brush, the first roller brush transmission shaft 2 is coaxially arranged with the first roller brush 20, and the second roller brush transmission shaft 4 is coaxially arranged with the second roller brush 30.

[0024] The motor 40 is in belt transmission connection with the first roller brush transmission shaft 2 and the second roller brush transmission shaft 4. The motor 40 has an output shaft 61 extending into the bracket assembly 1. A motor gear 62 is coaxially sleeved on the output shaft 61. A large gear 63 is supported on the second roller brush transmission shaft 4. The motor gear 62 and the large gear 63 are tensioned with a first synchronous belt 64. When the motor gear 62 rotates, the large gear 63 rotates following the transmission of the first synchronous belt 64. A small gear 65 is supported on the first roller brush transmission shaft 2. The small gear 65 and the large gear 63 are tensioned with a second synchronous belt 66. When the large gear 63 rotates, the small gear 65 rotates following the transmission of the second synchronous belt 66. When the motor 40 works, the output shaft 61 drives the coaxial motor gear 62 to rotate. The motor gear 62 drives the large gear 63 to rotate through the first synchronous belt 64. The large gear 63 drives the first roller brush transmission shaft 2 to rotate, so that the first roller brush 20 coaxially arranged with the first roller brush transmission wheel 3 and the first roller brush transmission shaft 2 rotates. At the same time, the large gear 63 drives the small gear 65 to rotate through the second synchronous belt 66. The small gear 65 drives the second roller brush transmission shaft 4 to rotate, so that the second roller brush 30 coaxially arranged with the second roller brush transmission wheel 5 and the second roller brush transmission shaft 4 rotates. The motor 40 drives the first roller brush 20 and the second roller brush 30 to rotate through the transmission mechanism 50. In order to ensure the stable transmission of the transmission mechanism 50, the second roller brush transmission shaft 4 and the first roller brush transmission shaft 2 need to have appropriate concentricity, so as to improve the problem of excessive motor load and excessive noise.

[0025] The bracket assembly 1 is fixed in the housing 10 and comprises a motor bracket 11 and a motor bracket cover 12. The motor bracket 11 comprises a left side wall portion 111 close to the first roller brush 20 and the second roller brush 30 and a right side wall portion 112 away from the first roller brush 20 and the second roller brush 30. The output shaft 61 of the motor 40 is supported on the left side wall portion 111 of the motor bracket 11.

[0026] The motor support cover 12 can be assembled on the motor support 11 to form a first installation cavity with the left side wall part 111 for installing the first roller brush transmission shaft 2 and the pinion 65. The two shaft ends of the first roller brush transmission shaft 2 are respectively supported on the left side wall part 111 and the motor support cover 12 through the first bearing 21 and the second bearing 22, and the first roller brush transmission shaft 2 is supported on the support assembly 1 to freely rotate around its own axis through the first bearing 21 and the second bearing 22. The motor support cover 12 is fixedly connected to the motor support 11 through a plurality of screws 13, which are evenly distributed around the axis of the first roller brush transmission shaft 2 in the circumferential direction. The plurality of screws 13 play a positioning role in the assembly of the first roller brush transmission shaft 2 on the support assembly 1 in the circumferential direction of the first roller brush transmission shaft 2, ensuring the concentricity of the first roller brush transmission shaft 2 when assembled on the support assembly 1, and avoiding excessive eccentricity of the first roller brush transmission shaft 2 during installation, thereby affecting the transmission of the transmission mechanism 50.

[0027] The left side wall part 111 and the right side wall part 112 form a second installation cavity for installing the second roller brush transmission shaft 4 and the large gear 63. The two shaft ends of the second roller brush transmission shaft 4 are respectively supported on the left side wall part 111 and the right side wall part 112 through the third bearing 41 and the fourth bearing 42, and the second roller brush transmission shaft 4 is supported on the support assembly 1 to freely rotate around its own axis through the third bearing 41 and the fourth bearing 42. The motor support 11 is an integrally injection molded component, so the left side wall part 111 and the right side wall part 112 are fixedly connected to each other and remain in opposite positions. The fixed left side wall part 111 and the right side wall part 112 ensure that the second roller brush transmission shaft 4 transmission mechanism always remains in a position extending in the left-right direction during assembly, thereby greatly ensuring the concentricity of the second roller brush transmission shaft 4.

[0028] The left end of the first roller brush transmission shaft 2 passes through the left side wall part 111 and is coaxially fixed with the first roller brush transmission wheel 3, and the left end of the second roller brush transmission shaft 4 passes through the left side wall part 111 and is coaxially fixed with the second roller brush transmission wheel 5. The first roller brush transmission wheel 3 and the second roller brush transmission wheel 5 located on the left side of the motor support 11 facilitate fixed coupling with the first roller brush 20 and the second roller brush 30, improving installation efficiency. In the embodiment of the present application, the first roller brush 20 has a first length measured in the axial direction, and the second roller brush 30 has a second length measured in the axial direction. The first length is greater than the second length, so the first roller brush transmission wheel 3 is located to the right of the second roller brush transmission wheel 5 on the motor support 11. The transmission mechanism 50 of the present application ensures stable transmission of each component while simplifying the installation space, making the floor brush device compact and reducing the floor area.

[0029] The application is integrally molded with the motor support 11, which ensures the concentricity of the second roller brush transmission shaft 4 during assembly of the transmission mechanism 50, and avoids the situation that the motor is overloaded and the noise exceeds the standard due to the second roller brush transmission shaft 4 not being assembled in place.

[0030] The above shows and describes the basic principles, main features and advantages of the application. Those skilled in the art should understand that the application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the application. Without departing from the spirit and scope of the application, various changes and improvements can be made to the application, and the scope of protection of the application is defined by the appended claims, the specification and their equivalents.

Claims

1. A floor brush device comprising a housing, a first roller brush and a second roller brush arranged adjacent to each other in front and back, a motor for simultaneously driving the first and second roller brushes to rotate, and a transmission mechanism arranged between the motor and the first and second roller brushes, the radius of the second roller brush being greater than that of the first roller brush; characterized in that, The transmission mechanism comprises a bracket assembly composed of a motor bracket and a motor bracket cover, a first roller brush transmission shaft and a second roller brush transmission shaft rotatably supported on the bracket assembly, a first roller brush transmission wheel fixed on one shaft end of the first roller brush transmission shaft, and a second roller brush transmission wheel fixedly installed on one shaft end of the second roller brush transmission shaft, the first roller brush transmission wheel is configured to be fixedly connected with the first roller brush, and the second roller brush transmission wheel is configured to be fixedly connected with the second roller brush; the motor bracket has a left side wall portion close to the first roller brush and the second roller brush and a right side wall portion away from the first roller brush and the second roller brush, both shaft ends of the first roller brush transmission shaft are assembled on the left side wall portion and the motor bracket cover respectively, and both shaft ends of the second roller brush transmission shaft are assembled on the left side wall portion and the right side wall portion respectively, wherein the motor bracket is an integrally injection molded component.

2. The floor brush device of claim 1, wherein, The output shaft of the motor is supported on the motor bracket, the output shaft is provided with a motor gear, the second roller brush transmission shaft is supported with a large gear, and the motor gear and the large gear are tensioned with a first synchronous belt.

3. The floor brush device of claim 2, wherein, The first roller brush transmission shaft is supported with a small gear, and the small gear and the large gear are tensioned with a second synchronous belt.

4. The floor brush device of claim 1, wherein, Both shaft ends of the first roller brush transmission shaft are respectively provided with first and second bearings between the motor bracket and the motor bracket cover.

5. The brush device of claim 1, wherein, Both shaft ends of the second roller brush transmission shaft are respectively provided with third and fourth bearings between the motor bracket.

6. The floor brush device of claim 1, wherein, The motor bracket cover and the motor bracket are fixedly connected through a plurality of screws.

7. The brush device of claim 6, wherein The plurality of screws are uniformly distributed around the axis of the first roller brush transmission shaft.

8. The floor brush device of claim 1, wherein, The first roller brush has a first length measured in the axial direction, and the second roller brush has a second length measured in the axial direction, and the first length is greater than the second length.

9. The brush device of claim 1, wherein, The second roller brush transmission wheel and the first roller brush transmission wheel are located on the same side of the motor bracket.

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