Surface cleaning head

Abstract

The surface cleaning head comprises a shell, a brush cavity is defined in the front of the shell, and the brush cavity is provided with a bottom opening facing a surface to be cleaned; a suction tube assembly; the lower part of the rolling brush extends downwards from the bottom opening; and a scraping strip mechanism, the scraping strip mechanism is provided with a first working position and a second working position and comprises a front scraping strip supporting seat, a front scraping strip and a rear scraping strip supporting seat; the front scraping strip is fixed on the front scraping strip supporting seat and is positioned in front of the rolling brush; the rear scraping strip is fixed on the rear scraping strip supporting seat and is positioned behind the rolling brush; the scraping strip motor is used for driving the scraping strip mechanism to be switched between a first working position and a second working position; when the scraping strip mechanism is located at the first working position, a first gap can be formed between the front scraping strip and a to-be-cleaned surface, and the rear scraping strip can make interference contact with the to-be-cleaned surface. And when the scraping strip mechanism is located at the second working position, a second gap can be formed between the rear scraping strip and the to-be-cleaned surface, and the front scraping strip can be in interference contact with the to-be-cleaned surface.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning equipment, and in particular to a surface cleaning head. Background Art

[0002] Surface cleaning equipment with suction function, such as vacuum cleaners, suction floor scrubbers, etc., is equipped with a surface cleaning head that can move along the surface to be cleaned. The surface cleaning head carries a roller brush that can contact the surface to be cleaned. During the cleaning work of the surface cleaning equipment, the surface cleaning head moves along the surface to be cleaned, and the roller brush contacts the surface to be cleaned and continuously picks up dirt and / or dirty liquid on the surface to be cleaned.

[0003] In a common surface cleaning head, the roller brush is arranged at the front of the floor brush assembly. When the surface cleaning device is performing cleaning work, the user pushes the surface cleaning head to move forward from the back on the surface to be cleaned; if the user finds that there are still stains on the surface that the surface cleaning head has passed through, the surface cleaning head needs to be turned around and pushed in the opposite direction to pass through the surface again or multiple times to achieve repeated cleaning of the surface. Since turning the surface cleaning head around takes the user extra time, this solution will reduce the cleaning effect. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of the present application is to provide a surface cleaning head that can move reciprocally on the surface to be cleaned and perform cleaning work at the same time.

[0005] In order to achieve the above-mentioned purpose, the present application provides a surface cleaning head, comprising: a shell, the front part of which defines a brush chamber, and the brush chamber has a bottom opening facing the surface to be cleaned; a suction duct, the suction duct is arranged in the shell and is connected to the fluid of the brush chamber; a roller brush can be driven and rotated to be accommodated in the brush chamber, and the lower part of the roller brush extends downward from the bottom opening; a scraper mechanism, the scraper mechanism is installed on the shell and is constructed to be able to switch between a first working position and a second working position, and the scraper mechanism includes a front scraper support seat, a front scraper fixed on the front scraper support seat and located in front of the roller brush, a rear scraper support seat, and a front scraper fixed on the front scraper support seat. A rear scraper bar is located on a rear scraper bar support seat and behind the roller brush, and a scraper bar motor drives the scraper bar mechanism to switch between a first working position and a second working position; wherein, when the scraper bar mechanism is in the first working position, a first gap is formed between the front scraper bar and the surface to be cleaned, the rear scraper bar can be in interference contact with the surface to be cleaned, and garbage together with air can flow from the front of the rear scraper bar to the bottom opening; when the scraper bar mechanism is in the second working position, a second gap is formed between the rear scraper bar and the surface to be cleaned, the front scraper bar can be in interference contact with the surface to be cleaned, and garbage together with air can flow from the rear of the front scraper bar to the bottom opening.

[0006] In the above technical solution, preferably, the scraper strip mechanism also includes a driving connecting rod having a front end and a rear end, the front scraper strip support seat is rotatably connected to the front end of the driving connecting rod around a first axis, the front scraper strip support seat is rotatably supported on the shell around a second axis, the rear scraper strip support seat is rotatably connected to the rear end of the driving connecting rod around a third axis, the rear scraper strip support seat is rotatably supported on the shell around a fourth axis, and the first, second, third and fourth axes are parallel to each other.

[0007] In the above technical solution, preferably, the output shaft of the scraper strip motor is connected to the rear scraper strip support seat to drive the rear scraper strip support seat to rotate relative to the shell around the fourth axis.

[0008] In the above technical solution, preferably, the scraper mechanism is an integral component.

[0009] In the above technical solution, preferably, the front scraper strip support seat and the rear scraper strip support seat both extend horizontally, and the driving connecting rod extends horizontally.

[0010] In the above technical solution, preferably, the surface cleaning head is characterized in that it also includes: a direction judgment component, which is used to identify whether the surface cleaning head moves from back to front or from front to back, and the direction judgment component is connected to the controller signal of the scraper motor.

[0011] In the above technical solution, preferably, the surface cleaning head also includes: an operating switch, having a first gear position and a second gear position and being control-connected to the scraper motor; when the operating switch is switched to the first gear position, the scraper motor drives the scraper mechanism to switch to the first working position; when the operating switch is switched to the second gear position, the scraper motor drives the scraper mechanism to switch to the second working position.

[0012] In the above technical solution, preferably, the bottom opening has a front edge and a rear edge, the front scraper strip is located outside the brush cavity and adjacent to the front edge, and the rear scraper strip is located outside the brush cavity and adjacent to the rear edge.

[0013] In the above technical solution, preferably, the surface cleaning head is a surface cleaning head suitable for being attached to a vacuum cleaner for use.

[0014] In the above technical solution, preferably, the surface cleaning head further comprises: a liquid distributor for distributing the fluid to the roller brush.

[0015] In the floor brush device of the present application, a scraper mechanism that can move between a first position and a second position is provided, so that the surface cleaning head can send the dirt and / or dirty liquid on the surface to be cleaned into the suction pipe during the movement from front to back and from back to front; in this way, when the user encounters stubborn stains on the floor to be cleaned, the user can move the surface cleaning head back and forth on the surface to be cleaned, thereby cleaning the stubborn stains. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a surface cleaning head provided in an embodiment of the present application when moving from back to front; Figure 2 A schematic diagram of the positional relationship between a roller brush, a front scraper strip, a rear scraper strip and a surface to be cleaned when a surface cleaning head provided in an embodiment of the present application moves from back to front; Figure 3 for Figure 1 A schematic diagram of the structure of the middle surface cleaning head when it moves from front to back; Figure 4A schematic diagram of the positional relationship between a roller brush, a front scraper strip, a rear scraper strip and a surface to be cleaned when a surface cleaning head provided in an embodiment of the present application moves from front to back; Figure 5 A schematic diagram of the structure of the scraper mechanism provided in the embodiment of the present application; Figure 6 A schematic side view of a scraper mechanism provided in an embodiment of the present application.

[0017] Wherein: 100, surface cleaning head; 1, shell; 2, roller brush; 3, scraper mechanism; 4, moving wheel; 11, bottom opening; 12, brush chamber; 13, suction duct; 31, front scraper support seat; 32, front scraper; 33, rear scraper support seat; 34, rear scraper; 35, driving connecting rod; 351, front end; 352, rear end; 36, scraper motor; 200, surface to be cleaned. DETAILED DESCRIPTION

[0018] In order to explain in detail the technical content, structural features, objectives and effects of the present application, 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 part of the embodiments of the present application, not all of the embodiments.

[0019] In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or embodiments of the present application. However, various exemplary embodiments may also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but not necessarily exclusive. For example, without departing from the present application's concept, the specific shape, configuration and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0020] Reference Figure 1 , Figure 3 , which shows a surface cleaning head 100 designed according to the technical solution of the present application. The surface cleaning head 100 can be assembled or attached to a vacuum cleaner, a suction-type floor scrubber and the like for use. The user pushes the surface cleaning head 100 to move on a surface to be cleaned, such as the ground, so that the surface cleaning head 100 cleans the surface area it passes through. The embodiment of the present application is described by taking the embodiment that can be assembled on a suction-type floor scrubber as an example, which is not limited to this.

[0021] Combination Figure 2 and Figure 4The surface cleaning head 100 includes a housing 1, a roller brush 2, a scraper mechanism 3 and a moving wheel 4. The front portion of the housing 1 defines a brush chamber 12 having a bottom opening 11 facing the surface to be cleaned. The roller brush 2 can be driven to rotate around its own axis and accommodated in the brush chamber 12; the lower portion 21 of the roller brush 2 will extend downward from the bottom opening 11 to contact the surface to be cleaned. When the roller brush 2 is driven to rotate around its own axis, the lower portion of the roller brush 2 continuously contacts the surface to be cleaned, thereby cleaning the surface to be cleaned.

[0022] A suction pipe assembly in fluid communication with the suction source is also provided inside the housing 1 . The suction pipe assembly includes a suction pipe 13 in fluid communication with the brush chamber 1 .

[0023] In some embodiments of the surface cleaning head for attachment to wet surface cleaning equipment such as a suction floor scrubber, a liquid distributor is also provided on the surface cleaning head; the liquid distributor is used to distribute the fluid to the roller brush 2. The liquid distributor has a plurality of liquid spraying ports, which are usually facing the roller brush 2 and distributed along the axial direction of the roller brush 2, so that the liquid distribution range of these liquid spraying ports can cover the entire axial direction of the roller brush 2. In some embodiments, a liquid scraping strip abutting the roller brush is also provided on the surface cleaning head; in terms of the rotation direction of the roller brush, the liquid scraping strip is usually downstream of the suction nozzle.

[0024] like Figure 5 and Figure 6 As shown, the scraper strip mechanism 3 includes a front scraper strip support seat 31, a front scraper strip 32 fixed on the front scraper strip support seat 31, a rear scraper strip support seat 33, a rear scraper strip 34 fixed on the rear scraper strip support seat 33, and a driving connecting rod 35 connecting the front scraper strip support seat 31 and the rear scraper strip support seat 33.

[0025] The driving link 35 has a front end 351 and a rear end 352, and the front scraper strip support seat 31 is connected to the front end 351 of the driving link 35 so as to be rotatable around the first axis X1; a pair of left and right side ends 311 of the front scraper strip support seat 31 will be supported on the shell 1 so as to be rotatable around the second axis X1.

[0026] The rear scraper support 33 is rotatably connected to the rear end 352 of the driving link 35 around the third axis X3. A pair of left and right end portions 331 of the rear scraper support 33 are rotatably supported on the housing 1 around the fourth axis X4.

[0027] In this example, the front scraper support seat 31 and the rear scraper support seat 33 are both extended in the horizontal lateral direction (lateral direction, i.e., left-right direction). The driving connecting rod 35 is extended in the horizontal longitudinal direction (longitudinal direction, i.e., front-back direction). The first axis X1, the second axis X2, the third axis X3, and the fourth axis X4 are all extended in the left-right direction and are parallel to each other.

[0028] The scraper mechanism 3 further includes a scraper motor 36. The output shaft of the scraper motor 36 is connected to the rear scraper support seat 33 to automatically drive the rear scraper support seat 33 to rotate around the fourth axis X4 relative to the housing 1. In this way, when the drive motor 36 drives the support seat 33 to rotate around the fourth axis X4, it will drive the drive link 35 to drive the front scraper support seat 31 to move, thereby driving the front scraper 32 to rise and leave the surface to be cleaned or to fall and make interference contact with the surface to be cleaned.

[0029] In some embodiments, the scraper mechanism 3 can be designed as an integrated component; this integrated component solution can reduce the number of parts and components, and is more convenient for assembly and maintenance.

[0030] Continue as Figure 1 , Figure 2 As shown, after the scraper mechanism 3 is installed on the housing 1, the scraper mechanism 3 is located near the roller brush 2; wherein the front scraper support seat 31 and the front scraper 32 are located in front of the roller brush 2, and the rear scraper support seat 33 and the rear scraper 34 are located behind the roller brush 2; and the front scraper support seat 31, the front scraper 32, the rear scraper support seat 33 and the rear scraper 34 are all located outside the brush chamber 12. The bottom opening 11 has a front side edge 111 and a rear side edge 112. The front scraper 32 is preferably adjacent to the front side edge 111 of the bottom opening 11; the rear scraper 34 is preferably adjacent to the rear side edge 112 of the bottom opening 11.

[0031] Driven by the scraper motor 35, the scraper mechanism 3 will be able to Figure 1 The first working position shown and Figure 2 Switching between the second working position shown.

[0032] Continue as Figure 1 , Figure 2 As shown, when the scraper mechanism 3 is in the first working position, the front scraper 32 is located above the lower portion 21 of the roller brush 2, and there is a gap G1 between the front scraper 32 and the surface 200 to be cleaned. The rear scraper 34 is roughly flush with the lower portion 21 of the roller brush 2 and can be in interference contact with the surface to be cleaned, and garbage can flow from the front of the rear scraper 34 to the bottom opening 11 together with the air.

[0033] Continue as Figure 3 , Figure 4 As shown, when the scraper mechanism 3 is in the second working position, the front scraper 32 is roughly flush with the lower portion 21 of the roller brush 2 and can be in interference contact with the surface to be cleaned; the rear scraper 34 is located above the lower portion 21 of the roller brush 2, and there is a gap G2 between the rear scraper 34 and the surface 200 to be cleaned, and garbage can flow from the rear of the front scraper 32 to the bottom opening 11 together with the air.

[0034] When the surface cleaning head 100 is working, when the surface cleaning head 100 is pushed to move from back to front, the scraper mechanism 3 is adapted to switch to the first working position; that is, the front scraper 32 is opened, the rear scraper 34 is closed to block dust, and garbage can only enter the bottom opening 11 from the front of the rear scraper 34 and be sent into the brush chamber 12. When the surface cleaning head 100 is pulled to move from front to back, the scraper mechanism 3 is adapted to switch to the second working position; that is, the front scraper 32 is closed to block dust, and the rear scraper 34 is opened, and garbage can only enter the bottom opening 11 from the rear of the front scraper 32 and be sent into the brush chamber 12.

[0035] In order to enable the scraper mechanism 3 to automatically adapt and switch to the first working position or the second working position, in some embodiments, the surface cleaning head 100 also includes a direction judgment component. The direction judgment component is used to identify whether the surface cleaning head 100 moves in the direction from back to front or from front to back, and the direction judgment component is connected to the controller signal of the scraper motor 36; that is, the scraper motor 36 can automatically switch the scraper mechanism 3 to the first working position or the second working position based on the judgment result signal of the direction judgment component. The direction judgment component may include an angle sensor (such as a Hall sensor, an optical encoder, etc.), which is installed at the moving wheel 4 of the surface cleaning head 100; the angle sensor determines whether the moving wheel 4 is moving forward or backward by monitoring the rotation direction of the wheel relative to the surface to be cleaned; the direction judgment component may also include an acceleration sensor installed in the housing 1, and the acceleration sensor detects the change in acceleration to determine the direction of movement of the surface cleaning head.

[0036] In addition, in some embodiments of the surface cleaning head, the surface cleaning head 100 may further include an operating switch. The operating switch is configured to have a first gear position and a second gear position, and the operating switch is controlled and connected to the scraper motor 36. When the operating switch is switched to the first gear position, the scraper motor 36 drives the scraper mechanism 3 to switch to the first working position; when the operating switch is switched to the second gear position, the scraper motor 36 drives the scraper mechanism 3 to switch to the second working position. By setting the operating switch, the user can manually choose to switch the scraper mechanism 3 to the first working position or the second working position to perform work.

[0037] Therefore, according to the surface cleaning head 100 of the embodiment of the present invention, the scraper mechanism 3 that can switch between two working positions is used, so that the surface cleaning head 100 can be pushed to move forward along the surface to be cleaned in the traditional moving direction from back to front, and can also be pulled to move backward along the surface to be cleaned in the direction from front to back. Regardless of the movement mode, the scraper mechanism 3 can ensure that the surface cleaning head 100 has excellent cleaning ability, and it is very convenient for the user to operate when stubborn stains that need to be wiped repeatedly by a roller brush appear on the surface to be cleaned.

[0038] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, and the scope of protection required by the present application is defined by the attached claims, description and their equivalents.

Claims

1. A surface cleaning head, characterized in that: include: a housing, the front portion of the housing defining a brush chamber, the brush chamber having a bottom opening facing the surface to be cleaned; A suction duct, the suction duct is disposed in the housing and is in fluid communication with the brush chamber; A roller brush is driven and rotatably accommodated in the brush chamber, and the lower portion of the roller brush extends downward from the bottom opening; as well as A scraper mechanism, wherein the scraper mechanism is installed on the shell and is constructed to be switchable between a first working position and a second working position, and the scraper mechanism includes a front scraper support seat, a front scraper fixed on the front scraper support seat and located in front of the roller brush, a rear scraper support seat, a rear scraper fixed on the rear scraper support seat and located behind the roller brush, and a scraper motor driving the scraper mechanism to switch between the first working position and the second working position; wherein, when the scraper mechanism is in the first working position, the front scraper can form a first gap with the surface to be cleaned, the rear scraper can be in interference contact with the surface to be cleaned, and garbage together with air can flow from the front of the rear scraper to the bottom opening; when the scraper mechanism is in the second working position, the rear scraper can form a second gap with the surface to be cleaned, the front scraper can be in interference contact with the surface to be cleaned, and garbage together with air can flow from the rear of the front scraper to the bottom opening.

2. The surface cleaning head according to claim 1, characterized in that The scraper strip mechanism also includes a driving connecting rod having a front end and a rear end, the front scraper strip support seat is rotatably connected to the front end of the driving connecting rod around a first axis, the front scraper strip support seat is rotatably supported on the shell around a second axis, the rear scraper strip support seat is rotatably connected to the rear end of the driving connecting rod around a third axis, the rear scraper strip support seat is rotatably supported on the shell around a fourth axis, and the first, second, third and fourth axes are parallel to each other.

3. The surface cleaning head according to claim 2, characterized in that The output shaft of the scraper strip motor is connected to the rear scraper strip support seat to drive the rear scraper strip support seat to rotate relative to the shell around the fourth axis.

4. The surface cleaning head according to claim 1, characterized in that The scraper mechanism is an integral component.

5. The surface cleaning head according to claim 1, characterized in that The front scraper strip support seat and the rear scraper strip support seat both extend horizontally, and the driving connecting rod extends horizontally and longitudinally.

6. The surface cleaning head according to claim 1, characterized in that Also includes: The direction judging component is used to identify whether the surface cleaning head moves from back to front or from front to back. The direction judging component is connected to the controller signal of the scraper motor.

7. The surface cleaning head according to claim 1, characterized in that Also includes: An operating switch, the operating switch having a first gear position and a second gear position and being control-connected to the scraper motor; When the operating switch is switched to the first gear, the scraper motor drives the scraper mechanism to switch to the first working position; when the operating switch is switched to the second gear, the scraper motor drives the scraper mechanism to switch to the second working position.

8. The surface cleaning head according to claim 1, characterized in that The bottom opening has a front edge and a rear edge, the front scraping strip is located outside the brush cavity and adjacent to the front edge, and the rear scraping strip is located outside the brush cavity and adjacent to the rear edge.

9. The surface cleaning head according to claim 1, characterized in that The surface cleaning head is a surface cleaning head suitable for being attached to a vacuum cleaner for use.

10. The surface cleaning head according to claim 1, characterized in that Also includes: The liquid distributor is used for distributing the fluid to the roller brush.

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