Water surface cleaning robot

Abstract

A water surface cleaning robot comprises a shell, walking motor sealing cavities are formed in the two sides of the shell, paddles are arranged on the two sides of the shell respectively, walking motors used for driving the paddles are arranged in the corresponding walking motor sealing cavities respectively, and the axes of the walking motors are perpendicular to a walking driving shaft; the output shaft end of the walking motor is sleeved and fixed with a walking driving worm, the walking driving worm is meshed with a walking driving worm gear, the inner end head of a walking driving shaft is fixed in a center hole of the walking driving worm gear, the outer end head of the walking driving shaft extends out of a sealing cavity of the walking motor, and paddles are fixed on the outer end head of the walking driving shaft. According to the utility model, a majority of reduction gears are prevented from being adopted for transmission, the structure is reliable, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to a water surface cleaning robot, belonging to the technical field of intelligent household appliances. Background Art

[0002] Traditional pool cleaning robots usually install propulsion blades at the front or rear end of the body. Although this layout simplifies the structural design, when the blades are only on the same side, the steering flexibility is poor, affecting the maneuverability of the robot. Another design is to place the blades on both sides of the body and directly connect the walking motor with the output shaft through a reduction gear set to improve the steering efficiency. However, the problem with this type of design is that due to the low transmission ratio of the walking motor used, its output characteristics are high speed and low torque. Such power characteristics easily cause the roller brush or blade to get stuck due to encountering greater resistance, and the excessive blade speed may cause the robot to move too fast, thus reducing the effect of garbage cleaning. In addition, the horizontally arranged walking motor increases the demand for internal space, making the overall size of the robot relatively large, restricting its application in compact pools. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the problems existing in the prior art and provide a water surface cleaning robot with a simple structure, achieving a large speed ratio in a small space, being flexible and convenient to steer, and capable of realizing low rotational speed, low noise, and high torque of the blades and roller brush.

[0004] To solve the above technical problems, the water surface cleaning robot of the utility model includes a housing. There are walking motor sealing cavities on both sides of the housing. Blades are respectively arranged on both sides of the housing. The walking motors for driving the blades are respectively arranged in the corresponding walking motor sealing cavities. The axis of the walking motor is perpendicular to the walking drive shaft. A walking drive worm is sleeved and fixed at the output shaft end of the walking motor. The walking drive worm meshes with a walking drive worm gear. The inner end of the walking drive shaft is fixed in the central hole of the walking drive worm gear. The outer end of the walking drive shaft extends out of the walking motor sealing cavity. The blade is fixed on the outer end of the walking drive shaft.

[0005] Further, a pull-out storage item is arranged in the middle of the housing. One end of the storage item is provided with a roller brush. The roller brush is driven by a cleaning motor arranged in the corresponding cleaning motor sealing cavity. A cleaning drive worm is sleeved on the output shaft of the cleaning motor. The cleaning drive worm meshes with a cleaning drive worm gear. The cleaning drive shaft at the center of the cleaning drive worm gear extends out of the cleaning motor sealing cavity and is sealed with each other. The roller brush is fixed on the cleaning drive shaft.

[0006] Further, a fastening nut is screwed onto the output shaft end of the walking motor to axially fix the walking drive worm.

[0007] Further, the paddle or the rotary brush is locked to the output end of the corresponding drive shaft by fastening screws.

[0008] Further, the walking motor sealing cavity is composed of a walking motor sealing shell, an upper cover of the gearbox and a bottom cover of the gearbox. The walking drive worm and the walking drive worm gear are arranged inside the upper cover of the gearbox. The walking drive shaft of the walking drive worm gear extends out from the stepped hole of the upper cover of the gearbox, and a shaft seal is arranged in the stepped hole of the upper cover of the gearbox.

[0009] Further, a sealing ring is arranged at the joint of the upper cover of the gearbox, the bottom cover of the gearbox and the walking motor sealing shell.

[0010] Further, the walking drive worm gear is clamped between two bearings. The walking drive shaft passes through the shaft hole at the center of the walking drive worm gear and the inner rings of the two bearings, and is supported by the two bearings. The upper cover of the gearbox and the walking motor sealing shell respectively extend limiting plates towards the direction of the walking drive worm gear, and the outer rings of the bearings abut against the corresponding limiting plates to achieve axial positioning.

[0011] Further, the walking motor sealing shell is joined to the upper cover of the gearbox and the bottom cover of the gearbox respectively by a plurality of self-tapping screws.

[0012] Further, a washer is arranged between the output end of the walking drive shaft and the fastening screw.

[0013] Compared with the prior art, the utility model has the following beneficial effects: Generally, the transmission ratio of a single-stage parallel gear is within 4. To obtain a larger transmission ratio, multi-stage gear transmission is required. However, through the walking drive worm gear and walking drive worm structure of this surface cleaning robot, a single-stage transmission ratio of more than 10 is achieved, providing a large torque to the paddle, and preventing the paddle / rotary brush from jamming. Compared with the multi-stage parallel shaft gear transmission, this solution has the advantages of reliable structure, reduced cost, high transmission efficiency, stable transmission, small gearbox space, low noise, convenient assembly and simple process. Description of the Drawings

[0014] The following further elaborates on the present utility model in detail in conjunction with the drawings and specific embodiments. The drawings are only for reference and illustration, and are not used to limit the present utility model.

[0015] Figure 1 It is the bottom view of the present utility model with the bottom cover removed;

[0016] Figure 2 It is the exploded view of the paddle / rotary brush drive structure of the present utility model;

[0017] Figure 3 It is the cross-sectional view of the paddle / rotary brush drive structure of the present utility model;

[0018] Figure 4 This is a cross-sectional view of another perspective of the blade / rotating brush drive structure in the present utility model;

[0019] In the figure: 1. housing, 2. traveling motor seal cavity, 3. traveling motor, 4. blade, 5. traveling drive shaft, 6. traveling drive worm, 7. traveling drive worm gear, 8. traveling motor seal housing, 9. upper cover of the gearbox, 10. bottom cover of the gearbox, 11. bearing, 12. shaft seal, 13. sealing ring; 14. limit plate, 15. self-tapping screw, 16. storage object, 17. rotating brush, 18. fastening nut, 19. fastening screw, 20. washer. Detailed implementation manners

[0020] In the following description of the present utility model, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating that the device must have a specific orientation.

[0021] In order to make the technical means, creative features, achieved purposes and functions implemented by the present utility model easy to understand, the present utility model will be further described below with reference to specific drawings.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model in this specification are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model.

[0023] The present utility model aims to provide a water surface cleaning robot, including: a housing 1, traveling motor seal cavities 2 are respectively arranged on both sides of the housing 1, and blades 4 are respectively arranged on both sides of the housing 1. Traveling motors 3 for driving the blades 4 are respectively arranged in the corresponding traveling motor seal cavities 2. The axis of the traveling motor 3 is perpendicular to the traveling drive shaft 5. A traveling drive worm 6 is sleeved and fixed on the output shaft of the traveling motor 3. A fastening nut 18 is screwed onto the shaft end of the output shaft of the traveling motor 3 to fix the traveling drive worm 6. The traveling drive worm 6 meshes with a traveling drive worm gear 7. The traveling drive shaft 5 at the center of the traveling drive worm gear 7 extends outside the traveling motor seal cavity 2. The blade 4 outside the housing 1 is fixed to the outer end of the traveling drive shaft 5. The blade is locked to the output end of the cleaning drive shaft 5 by a fastening screw 19. A washer 20 is arranged between the fastening screw 19 and the output end of the cleaning drive shaft 5.

[0024] The traveling motor sealing cavity 2 is composed of a traveling motor sealing housing 8, an upper cover 9 of the gearbox, and a bottom cover 10 of the gearbox. The traveling drive worm 6 and the traveling drive worm gear 7 are arranged inside the upper cover 9 of the gearbox. The traveling drive shaft 5 at the center of the traveling drive worm gear 7 extends out from the stepped hole of the upper cover 9 of the gearbox, and a shaft seal 12 is provided in the stepped hole of the upper cover 9 of the gearbox.

[0025] The traveling motor sealing housing 8 is respectively joined with the upper cover 9 of the gearbox and the bottom cover 10 of the gearbox through a plurality of self-tapping screws 15, and a sealing ring 13 is provided at the joint of the upper cover 9 of the gearbox, the bottom cover 10 of the gearbox and the traveling motor sealing housing 8.

[0026] The traveling drive worm gear 7 is clamped between two bearings 11. The traveling drive shaft 5 passes through the shaft hole at the center of the traveling drive worm gear 7 and the inner rings of the two bearings 11, and is supported by the two bearings 11. The upper cover 9 of the gearbox and the traveling motor sealing housing 8 respectively extend in the direction towards the traveling drive worm gear 7 with limiting plates 14, and the outer rings of the bearings 11 abut against the limiting plates 14 to achieve axial positioning.

[0027] A slidable storage member 16 is provided in the middle of the housing. A rotary brush 17 is provided at one end of the storage member 16. The rotary brush 17 is driven by a cleaning motor arranged in a corresponding cleaning motor sealing cavity. The output shaft of the cleaning motor is sleeved with a cleaning drive worm, and the cleaning drive worm meshes with a cleaning drive worm gear. The cleaning drive shaft at the center of the cleaning drive worm gear extends outside the cleaning motor sealing cavity, and the central hole of the rotary brush 17 is fixed on the cleaning drive shaft.

[0028] In the utility model, the traveling motor 3 rotates to drive the traveling drive worm 6 to rotate. The traveling drive worm 6 meshes with the traveling drive worm gear 7. The traveling drive worm 6 drives the traveling drive worm gear 7 to transmit power. The transmission ratio of the traveling drive worm gear 7 to the traveling drive worm 6 is greater than 10, ensuring that the paddle 4 of the pool robot achieves the effect of low speed and high torque.

[0029] The utility model has the advantages of low cost, high transmission efficiency, stable transmission, small space of the gearbox, low noise, convenient assembly and simple processes.

[0030] The above are only the preferred and feasible embodiments of the present utility model, which show and describe the basic principles, main features and advantages of the present utility model. The patent protection scope of the present utility model is not limited thereby. Those skilled in the art should understand that the present utility model is not restricted by the above embodiments. Except for the above embodiments, without departing from the spirit and scope of the present utility model, the present utility model may have other implementation manners. The present utility model will also have various changes and improvements. All technical solutions formed by means of equivalent substitution or equivalent transformation fall within the protection scope required by the present utility model. The protection scope required by the present utility model is defined by the appended claims and their equivalents. The technical features not described in the present utility model can be realized by or adopted the existing technologies, and will not be elaborated herein.

Claims

1. A water surface cleaning robot, comprising a shell, with travel motor sealed chambers provided on both sides of the shell, characterized in that: Paddles are respectively provided on both sides of the shell, and travel motors for driving the paddles are respectively arranged in corresponding travel motor sealing cavities, the axis of the travel motor is perpendicular to the travel drive shaft, the output shaft end of the travel motor is sleeved and fixed with a travel drive worm, the travel drive worm is meshed with the travel drive worm wheel, the inner end of the travel drive shaft is fixed in the center hole of the travel drive worm wheel, the outer end of the travel drive shaft extends out of the travel motor sealing cavity, and the paddles are fixed on the outer end of the travel drive shaft.

2. The water surface cleaning robot according to claim 1, characterized in that: A pull-out storage piece is provided in the middle of the shell, and a roller brush is provided at one end of the storage piece. The roller brush is driven by a cleaning motor arranged in a corresponding cleaning motor sealing cavity. The output shaft of the cleaning motor is sleeved with a cleaning drive worm, and the cleaning drive worm is meshed with a cleaning drive worm wheel. The cleaning drive shaft at the center of the cleaning drive worm wheel extends out of the cleaning motor sealing cavity and is sealed with each other, and the roller brush is fixed on the cleaning drive shaft.

3. The water surface cleaning robot according to claim 1 or 2, characterized in that: The fastening nut is screwed onto the output shaft end of the travel motor to axially fix the travel drive worm.

4. The water surface cleaning robot according to claim 2, characterized in that: The paddle blades or roller brushes are locked on the output ends of the corresponding drive shafts by means of fastening screws.

5. The water surface cleaning robot according to claim 1 or 2, characterized in that: The travel motor sealing chamber is composed of a travel motor sealing shell, a gear box upper cover and a gear box bottom cover. The travel drive worm and the travel drive worm wheel are arranged in the gear box upper cover. The travel drive shaft of the travel drive worm wheel extends out from the step hole of the gear box upper cover, and a shaft seal is provided in the step hole of the gear box upper cover.

6. The water surface cleaning robot according to claim 5, characterized in that: A sealing ring is arranged at the joints of the gear box upper cover, the gear box bottom cover and the travel motor sealing shell.

7. The water surface cleaning robot according to claim 6, characterized in that: The travel drive worm wheel is clamped between two bearings, and the travel drive shaft passes through the axial hole in the center of the travel drive worm wheel and the inner rings of the two bearings and is supported by the two bearings. The gear box upper cover and the travel motor sealing shell respectively extend limit plates toward the direction of the travel drive worm wheel, and the outer ring of the bearing abuts against the corresponding limit plate to achieve axial positioning.

8. The water surface cleaning robot according to claim 6, characterized in that: The travel motor sealing shell is respectively connected with the gear box upper cover and the gear box bottom cover by a plurality of self-tapping screws.

9. The water surface cleaning robot according to claim 4, characterized in that: A washer is provided between the output end of the travel drive shaft and the fastening screw.

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