Surface cleaning apparatus

Abstract

The utility model discloses surface cleaning equipment which comprises a shell, a suction cavity is defined in the shell, and a rolling brush used for cleaning a surface to be cleaned is installed in the suction cavity. The suction device further comprises a connecting piece, at least part of the connecting piece is arranged above the suction cavity, and the connecting piece is installed on the shell in a pivoted mode. The scraping strip is installed on the connecting piece and located in front of the rolling brush in the advancing direction. The driving structure drives the connecting piece to rotate around the pivotal shaft, so that the scraping strip moves between a first position and a second position, and the scraping strip is configured as follows: in the first position, the scraping strip is far away from a to-be-cleaned surface; and at the second position, the scraping strip is in contact with the surface to be cleaned. And the pivotable connecting piece is arranged on the shell, so that the movement stability of the scraping strip is realized through the integrity of the connecting piece, and the cost can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, and in particular to a surface cleaning device. Background Technology

[0002] As living standards improve, people have increasingly higher requirements for floor cleaning. Currently, the market offers a variety of surface cleaning equipment, such as vacuum cleaners, floor scrubbers, and robotic vacuum cleaners, to meet different needs. To improve cleaning efficiency (by controlling the suction nozzle size or enhancing wet cleaning capabilities), a retractable squeegee is installed in front of the suction nozzle.

[0003] In the existing technology, in order to keep the entire scraper blade balanced (avoiding a situation where one end is higher than the other), a relatively complex structure is adopted (controlling the lifting and lowering of the scraper blade through a tension spring or setting drive motors at both ends of the scraper blade), which increases the cost and also reduces the stability. Utility Model Content

[0004] To address the shortcomings of the aforementioned technologies, this invention provides a surface cleaning device that offers more stable control over the front scraper while also reducing costs.

[0005] On the one hand, this utility model provides a surface cleaning device, including

[0006] A housing that defines a suction chamber in which a roller brush for cleaning a surface to be cleaned is installed;

[0007] A connector, at least partially disposed above the suction chamber, is pivotally mounted to the housing;

[0008] A scraper strip is installed on the connector and is located in front of the roller brush along the forward direction;

[0009] A drive structure drives the connector to rotate about a pivot axis to move the scraper between a first position and a second position, the scraper being configured such that: in the first position, the scraper is away from the surface to be cleaned; and in the second position, the scraper is in contact with the surface to be cleaned.

[0010] Optionally, along the axial direction of the roller brush, the width of the connector is greater than one-third of the length of the roller brush.

[0011] Optionally, the drive structure includes a drive motor and a push rod that is drively connected to the drive motor, the push rod being used to push the connecting member to rotate about the pivot axis.

[0012] Optionally, the push rod is positioned above the connector to generate a downward thrust on the connector, and the pivot shaft is positioned behind the roller brush along the travel direction.

[0013] Optionally, the push rod is disposed below the connector to generate a downward thrust on the connector, and the pivot axis is disposed in front of the push rod along the direction of travel.

[0014] Optionally, a reset device is included, configured to hold the connector in a first position or a second position when the drive structure does not apply force to the connector.

[0015] On the other hand, this utility model also provides a surface cleaning device, which includes a main unit and a cleaning head, wherein the cleaning head includes:

[0016] A housing that defines a suction chamber in which a roller brush for cleaning a surface to be cleaned is installed;

[0017] A cover body, which covers the suction chamber, includes a main body and an upper cover plate mounted on the main body;

[0018] A scraper is provided on the upper cover plate, the scraper is located in front of the roller brush, and the upper cover plate is pivotally mounted on the main body;

[0019] A drive structure drives the upper cover plate to rotate about a pivot axis to move the scraper between a first position and a second position, wherein the scraper is configured such that in the first position, the scraper is away from the surface to be cleaned, and in the second position, the scraper is in contact with the surface to be cleaned.

[0020] Optionally, the upper cover plate includes a top wall and a side wall, and the upper cover plate is disposed on the main body and covers the upper surface of the main body.

[0021] Optionally, the housing defines a receiving space for accommodating the drive structure, which includes a drive motor and a push rod, and is disposed below the cover.

[0022] Optionally, the pivot is located between the push rod and the scraper.

[0023] Optionally, a reset device is included, configured to hold the scraper in a first position or a second position when the push rod does not apply force to the upper cover plate.

[0024] Optionally, the scraper is detachably mounted on the upper cover plate.

[0025] This invention provides a surface cleaning device, including a housing defining a suction chamber, within which a roller brush for cleaning a surface to be cleaned is installed. It also includes a connector, at least partially disposed above the suction chamber, pivotally mounted to the housing. A scraper is mounted to the connector, positioned in front of the roller brush along the forward direction. A drive structure drives the connector to rotate about a pivot axis, moving the scraper between a first position and a second position. The scraper is configured such that in the first position, it is away from the surface to be cleaned; and in the second position, it is in contact with the surface to be cleaned. By employing a pivotable connector on the housing, the integrity of the connector ensures smooth scraper movement and effectively reduces costs.

[0026] This invention provides a surface cleaning device, comprising a main unit and a cleaning head. The cleaning head includes a housing and a cover. The housing defines a suction chamber, within which a roller brush is installed. The cover covers the suction chamber and includes a main body and an upper cover plate mounted on the main body. A scraper is disposed on the upper cover plate, positioned in front of the roller brush. The upper cover plate is pivotally mounted on the main body. A drive structure drives the upper cover plate to rotate about a pivot axis, causing the scraper to move between a first position and a second position. In the first position, the scraper is away from the surface to be cleaned; in the second position, the scraper is in contact with the surface to be cleaned. The movement of the scraper is driven by the pivotable upper cover plate, simplifying the transmission structure between the scraper and the drive structure, ensuring the stability of the scraper movement, and effectively reducing costs. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a sweeping robot according to one embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of a floor scrubber in one embodiment;

[0029] Figure 3 This is a schematic diagram of the structure of a handheld vacuum cleaner in one embodiment;

[0030] Figure 4 This is a schematic diagram of the cleaning head in one embodiment;

[0031] Figure 5 This is a schematic diagram of the cleaning head in another embodiment;

[0032] Figure 6 For along Figure 5 The cross-section along the AA direction is shown in the figure, with the arrow indicating the direction of the cleaning head's retraction.

[0033] Figure 7 Figure 6 Enlarged view of the structure of region B in the middle;

[0034] Figure 8 For along Figure 5 The cross-section along the AA direction is shown in the figure, with the arrow indicating the direction of the cleaning head's movement.

[0035] Figure 9 This is a schematic diagram of the structure in one embodiment where the scraper is in a second position when the cleaning head retracts;

[0036] Figure 10 This is a schematic diagram of the structure in one embodiment where the scraper is in a first position when the cleaning head moves forward;

[0037] Figure 11 This is a schematic diagram of the upper cover plate in one embodiment;

[0038] Figure 12 This is a schematic diagram of the structure after the cleaning head is hidden behind the top cover in one embodiment;

[0039] Figure 13 This is a schematic diagram of the internal structure of the cleaning head hidden portion of the outer shell in one embodiment;

[0040] Figure 14 for Figure 13 Enlarged view of the structure of region C in the middle;

[0041] Figure 15 This is a schematic diagram of the cover structure in one embodiment. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] It should be noted that if the embodiments of this utility model involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0044] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0045] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] refer to Figure 1-3 This application discloses a surface cleaning device 100, which can be a vacuum cleaner, a robotic vacuum cleaner, a floor scrubber, or other cleaning equipment. The surface cleaning device 100 includes a housing 1. When the surface cleaning device 100 is an upright surface cleaning device 100 such as a vacuum cleaner or a floor scrubber, the housing 1 serves as the outer shell of a cleaning head 102. The cleaning head 102 is connected to a host unit 101, and the user controls the cleaning head 102 by controlling the host unit 101.

[0047] refer to Figure 4 , 6 -8. The housing 1 defines a suction chamber 5, and a roller brush 4 for cleaning the surface 7 to be cleaned is installed in the suction chamber 5. The structure and material of the roller brush 4 will not be described in detail here, as they are well known to those skilled in the art.

[0048] The connector 2 is at least partially disposed above the suction chamber 5, and the connector 2 is pivotally mounted to the housing 1. The connector 2 can be disposed inside the surface cleaning device 100 or outside the surface cleaning device 100, that is, the outer surface of the connector 2 is part of the outer surface of the surface cleaning device 100.

[0049] refer to Figure 12-15The scraper 3 is installed on the connector 2, positioned in front of the roller brush 4 along the forward direction. For easy replacement, the scraper 3 can be detachably installed on the connector 2. The scraper 3 is generally made of soft rubber material and has the functions of sealing openings and scraping away stains. Of course, it can also be in other forms, such as a brush, depending on the requirements. To drive the connector 2 to pivot, the surface cleaning device 100 also includes a drive structure 8. The drive structure 8 includes a drive motor 81 and a push rod 82 that is driven by the drive motor 81. The push rod 82 is used to push the connector 2 to rotate around the pivot shaft 6. The output shaft of the drive motor 81 is provided with a gear 83, and the push rod 82 is provided with a toothed condition 84 that meshes with the gear 83. Thus, when the gear 83 rotates, it can drive the toothed condition 84 to move up and down, thereby driving the connector 2. Of course, the drive structure 8 can also be in other forms to achieve the goal of driving the connector 2 to rotate around the pivot shaft 6. The drive motor 81 can perform related actions according to the control signal. The control signal can be issued by the controller installed on the surface cleaning device 100. The technology for detecting whether the surface cleaning device 100 moves forward or backward is conventional technology, such as: installing a sensor on the roller of the cleaning head 102, or installing a sensor in other positions to detect the direction of movement relative to the ground, or detecting the direction of movement through the position of the movable handle, etc., which will not be described in detail here.

[0050] The drive structure 8 drives the connector 2 to rotate about a pivot axis 6. There are generally two pivot axes 6, spaced far apart to ensure the connector 2 remains balanced during pivoting and prevents lateral shifting. The pivoting of the connector 2 allows the scraper 3 to move between a first position and a second position. The scraper 3 is configured such that in the first position, it is away from the surface 7 to be cleaned; and in the second position, it is in contact with the surface 7. In one embodiment, when the surface cleaning device 100 moves forward, the drive structure 8 drives the scraper 3 to remain in the first position, and when the surface cleaning device 100 moves backward, the drive structure 8 drives the scraper 3 to remain in the second position. In another opposite embodiment (not shown), when the surface cleaning device 100 moves forward, the drive structure 8 drives the scraper 3 to remain in the second position, and when the surface cleaning device 100 moves backward, the drive structure 8 drives the scraper 3 to remain in the first position. Using a pivotable connector 2 simplifies the structure, achieves stable raising and lowering of the scraper 3, and effectively reduces costs.

[0051] Along the axial direction of roller brush 4 ( Figure 4 (In the X direction), the width of connector 2 is greater than one-third of the length of roller brush 4. Using a wider connector 2 can further increase the stability of the scraper 3's lifting and lowering (ensuring consistency on both sides).

[0052] In one embodiment, if there is sufficient space above the connector 2, the push rod 82 is positioned above the connector 2 to generate a downward thrust on the connector 2. A pivot shaft 6 along the direction of travel can be positioned behind the roller brush 4, between the roller brush 4 and the push rod 82.

[0053] In another embodiment, if there is sufficient space below the connector 2, the push rod 82 is positioned below the connector 2 to generate a downward thrust on the connector 2. A pivot shaft 6 along the direction of travel is positioned in front of the push rod 82.

[0054] The positional relationship between push rod 82, scraper 3 and pivot shaft 6 can be adjusted according to the lever principle depending on the specific structure, which will not be described in detail here.

[0055] The push rod 82 can be driven to the connector 2, so that regardless of whether the push rod 82 moves upward or downward, it can drive the connector 2 to move about the pivot axis 6. The drive structure 8 can control the movement of the scraper 3 between a first position and a second position. For example, the push rod 82 can be detachably snapped to the connector 2 by a mechanical structure; the specific structure will not be detailed here. In other embodiments, if the push rod 82 can only push the connector 2 in one direction, then a reset device (not shown in the figure) is also required. The reset device is configured to hold the connector 2 in the first or second position when the push rod 82 does not apply force to the connector 2. The reset device can be an elastic reset structure (spring, torsion spring, etc.) or other forms of reset device.

[0056] refer to Figure 2 and 3 An upright vacuum cleaner (floor scrubber) generally consists of a main unit 101 and a cleaning head 102. (Reference) Figure 5-15 The cleaning head 102 includes a housing 1 and a cover 9 disposed on the housing 1. The housing 1 and cover 9 are generally molded from plastic material, a mature technology, and will not be described in detail here. The housing 1 defines a suction chamber 5, within which a roller brush 4 is installed; the roller brush 4 is used to clean the surface 7 to be cleaned. The roller brush 4 is a commonly used roller brush in the prior art, and will not be described in detail here. The cover 9 covers the suction chamber 5 and is detachably disposed on the housing 1 for easy removal and cleaning. The cover 9 includes a main body 91 and an upper cover plate 92 mounted on the main body 91.

[0057] Continue to refer to Figure 5-15The upper cover plate 92 is provided with a scraper 3, which is located in front of the roller brush 4. The upper cover plate 92 is pivotally mounted on the main body 91. The scraper 3 is generally made of soft rubber material and has the function of sealing the opening in front of the roller brush 4 and scraping away stains and water stains. Of course, depending on the needs, the scraper 3 can also be in other forms, such as a brush. In order to drive the upper cover plate 92 to pivot, the surface cleaning device 100 also includes a drive structure 8. In the embodiment shown in the figure, the drive structure 8 includes a drive motor 81 and a push rod 82 that is driven by the drive motor 81. The push rod 82 is used to push the upper cover plate 92 to rotate around the pivot axis 6. The output shaft of the drive motor 81 is provided with a gear 83, and the push rod 82 is provided with a tooth condition 84 that meshes with the gear 83. In this way, when the gear 83 rotates, it can drive the tooth condition 84 to move up and down, thereby driving the upper cover plate 92. The housing 1 has a through hole 11, through which the push rod 82 can pass and contact the upper cover plate 92, driving the upper cover plate 92. A seal is provided at the through hole 11 to prevent liquid from entering the housing 1 and damaging the drive motor 81. Of course, the drive structure 8 can also be other forms of structure, as long as it drives the upper cover plate 92 to rotate around the pivot axis 6. The drive motor 81 can perform related actions according to the control signal, which can be issued by the controller installed on the surface cleaning device 100. The technology for detecting the forward or backward movement of the surface cleaning device 100 is conventional, such as: installing a sensor on the roller of the cleaning head 102, or installing a sensor in other positions to detect the direction of movement relative to the ground, or detecting the direction of movement through the position of the movable handle, etc., which will not be described in detail here.

[0058] The drive structure 8 drives the upper cover 92 to rotate around the pivot axis 6, allowing the scraper 3 to move between a first position and a second position. There are generally two pivot axes 6, spaced far apart to ensure the upper cover 92 remains balanced during pivoting and prevents lateral shifting. The pivoting of the upper cover 92 allows the scraper 3 to move between the first and second positions. In the first position, the surface cleaning device 100 is moving forward, and the scraper 3 is moving away from the surface 7 to be cleaned. When the scraper 3 is away from the surface 7, the front suction port can be opened, while simultaneously preventing dirt on the floor from being pushed forward by the scraper 3. In the second position, the surface cleaning device 100 is moving backward, and the scraper 3 is in contact with the surface 7 to be cleaned. The front suction port is closed, increasing suction power and effectively removing water stains from the floor.

[0059] refer to Figure 15The top cover 92 includes a top wall 93 and a side wall 94. The top cover 92 is disposed on the body 91 and covers the upper surface of the body 91. At least a portion of the outer surface of the top cover 92 forms part of the outer surface of the entire cleaning head 102. The integrated design of the top cover 92 improves the integrity of the product and enhances its waterproof performance.

[0060] refer to Figure 6-7 12-13, In one embodiment, if there is sufficient space below the connector 2, the push rod 82 is positioned below the connector 2 to generate a downward thrust on the connector 2, and the pivot shaft 6 is positioned in front of the push rod 82 along the direction of travel. To make the connection of the upper cover plate 92 more stable, the pivot shaft 6 is located between the push rod 82 and the scraper 3. The positional relationship between the push rod 82, the scraper 3, and the pivot shaft 6 can be adjusted according to the lever principle depending on the specific structure, and will not be described in detail here.

[0061] To facilitate the installation of the drive structure 8, the housing 1 defines a receiving space for the drive structure 8, which includes a drive motor 81 and a push rod 82, and is located below the cover 9. Placing the drive structure 8 inside the housing 1, and utilizing the sealing performance of the housing 1, can effectively improve its safety performance and reduce costs.

[0062] The push rod 82 can be driven to the upper cover plate 92, thus controlling the movement of the scraper 3 between a first position and a second position. For example, the push rod 82 can be snapped onto the upper cover plate 92 via a detachable snap-fit ​​structure. When the cover 9 is installed onto the housing 1, the push rod 82 is engaged with the upper cover plate 92. When the cover 9 is removed from the housing 1, the push rod 82 is disengaged from the upper cover plate 92.

[0063] In other embodiments, if the push rod 82 can only push the upper cover plate 92 in one direction, then a reset device (not shown in the figure) is also required. The reset device is configured to hold the upper cover plate 92 in a first position or a second position when the push rod 82 does not apply force to the upper cover plate 92. The reset device may be an elastic element with rebound properties, or other structures that can realize the reset function, etc., which will not be described in detail here.

[0064] During use, the scraper 3 will gradually accumulate dirt or wear. To facilitate cleaning or replacement, the scraper 3 is detachably mounted on the upper cover plate 92.

[0065] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A surface cleaning device, characterized in that, include: A housing that defines a suction chamber in which a roller brush for cleaning a surface to be cleaned is installed; A connector, at least partially disposed above the suction chamber, is pivotally mounted to the housing; A scraper strip is installed on the connector and is located in front of the roller brush along the forward direction; A drive structure drives the connector to rotate about a pivot axis to move the scraper between a first position and a second position, the scraper being configured such that: in the first position, the scraper is away from the surface to be cleaned; and in the second position, the scraper is in contact with the surface to be cleaned.

2. The surface cleaning equipment as described in claim 1, characterized in that, Along the axial direction of the roller brush, the width of the connector is greater than one-third of the length of the roller brush.

3. The surface cleaning equipment as described in claim 1, characterized in that, The drive structure includes a drive motor and a push rod that is drively connected to the drive motor. The push rod is used to push the connecting member to rotate around the pivot axis.

4. The surface cleaning equipment as described in claim 3, characterized in that, The push rod is positioned above the connector and is used to generate a downward thrust on the connector. The pivot shaft is positioned behind the roller brush along the direction of travel.

5. The surface cleaning equipment as described in claim 3, characterized in that, The push rod is located below the connector and is used to generate a downward thrust on the connector. The pivot shaft is located in front of the push rod along the direction of travel.

6. The surface cleaning equipment as described in claim 1, characterized in that, It includes a reset device configured to hold the connector in a first position or a second position when the drive structure does not apply force to the connector.

7. A surface cleaning device, comprising a main unit and a cleaning head, characterized in that, The cleaning head includes: A housing that defines a suction chamber in which a roller brush for cleaning a surface to be cleaned is installed; A cover body, which covers the suction chamber, includes a main body and an upper cover plate mounted on the main body; A scraper is provided on the upper cover plate, the scraper is located in front of the roller brush, and the upper cover plate is pivotally mounted on the main body; A drive structure drives the upper cover plate to rotate about a pivot axis to move the scraper between a first position and a second position, wherein the scraper is configured such that in the first position, the scraper is away from the surface to be cleaned, and in the second position, the scraper is in contact with the surface to be cleaned.

8. The surface cleaning equipment as described in claim 7, characterized in that, The upper cover plate includes a top wall and a side wall, and the upper cover plate is disposed on the main body and covers the upper surface of the main body.

9. The surface cleaning equipment as described in claim 7, characterized in that, The housing defines a receiving space for accommodating the drive structure, which includes a drive motor and a push rod, and is disposed below the cover.

10. The surface cleaning equipment as described in claim 9, characterized in that, The pivot shaft is located between the push rod and the scraper.

11. The surface cleaning equipment as described in claim 10, characterized in that, It includes a reset device configured to hold the scraper in a first position or a second position when the push rod does not apply force to the upper cover plate.

12. The surface cleaning equipment as described in claim 7, characterized in that, The scraper is detachably mounted on the upper cover plate.

Images