Propeller and underwater swimming pool cleaning robot with same

Abstract

The utility model discloses a propeller and an underwater swimming pool cleaning robot with the propeller, and the propeller comprises a central rotating shaft sleeve and blades. Part or all of the upper part of the central rotating shaft sleeve is arranged as a paddle mounting section; the center rotating shaft sleeve extends in the preset first direction and is perpendicular to the preset first plane. According to the propeller, the at least three blades are fixedly connected to the blade mounting section through the first ends of the blades, and the distances between the first ends of the blades are consistent, so that the stress of the propeller in operation is more uniform, and the structural strength and durability of the propeller are improved. The included angle formed by the first end part and the first plane is larger than that formed by the second end part and the first plane, and the length of the first end part is smaller than that of the second end part, so that a curved surface is formed on the paddle, and the shape of the paddle is further optimized and the fluid mechanical property of the paddle is improved by forming the curved surface; and the device can also be applied to a lower swimming pool cleaning robot with a smaller size.

Description

Technical Field

[0001] The utility model relates to the technical field of propellers, in particular to a propeller and an underwater swimming pool cleaning robot having the same. Background Art

[0002] Propellers are key components of underwater pool cleaning robots. Their design and performance directly impact the robot's cleaning efficiency and operability. The basic working principle of a propeller is to generate propulsion through rotation. As the propellers rotate, they generate thrust in the water, propelling the cleaning robot toward its target. This propulsion method provides sufficient thrust while enabling the robot to maintain a stable trajectory.

[0003] Existing propeller structures suffer from excessive bulk, high energy consumption, and low efficiency. Due to the inappropriate shape and placement of the blades, propellers can become unstable during operation. Oversized propellers also make underwater pool cleaning robots bulky, making it difficult for them to clean small, corners, and other areas of a pool. Utility Model Content

[0004] The technical problem solved by the present invention is to address the defects in the above-mentioned prior art and provide a propeller and an underwater pool cleaning robot having the same, so as to solve at least one problem raised in the above-mentioned background technology. The specific technical solutions adopted are as follows:

[0005] In a first aspect, a propeller is provided, comprising a central rotating shaft sleeve and blades. A portion or the entirety of the central rotating shaft sleeve is a blade mounting section. The central rotating shaft sleeve extends along a predetermined first direction and is perpendicular to a predetermined first plane. The blades include a first end and a second end distal to the first end. At least three blades are fixedly connected to the blade mounting section via the first ends, and the first ends of the blades are uniformly spaced apart.

[0006] An angle formed by the first end and the first plane is greater than an angle formed by the second end and the first plane, and a length of the first end is less than a length of the second end, so as to form a curved surface on the blade.

[0007] In some specific embodiments, it further includes at least one axial hole that passes through the central rotating sleeve in the extension direction of the central rotating sleeve, and the axial hole is symmetrical with respect to the axis of the central rotating sleeve, for allowing external structures to enter.

[0008] In some specific embodiments, the inner side wall of the shaft hole further includes a special-shaped engaging section covering a portion of the length of the shaft hole, and the special-shaped engaging section is used to allow the external structure to enter and be fixedly engaged in the central shaft sleeve.

[0009] In some specific embodiments, a blade structure is provided along part or all of the protruding edge of the second end facing outward. In practical applications, when a propeller is operating in water, it is prone to unexpected situations such as the propeller becoming entangled in foreign matter such as waterweed or garbage. These foreign matter not only damages the blades but also reduces or prevents further operation of the propeller, shortening the life of the propeller. By providing a blade structure along the outward edge of the second end of the propeller, the propeller can quickly cut through foreign matter such as waterweed or garbage when it becomes entangled, ensuring that the propeller's operation is not interfered with by foreign matter in the water.

[0010] In some specific embodiments, the blade mounting section covers a portion of the length of the central rotating shaft sleeve, with one end of the blade mounting section overlapping with one end of the central rotating shaft sleeve. One end of the special-shaped engaging section overlaps with the end of the central rotating shaft sleeve away from the blade mounting section; and the length of the special-shaped engaging section corresponding to the length of the central rotating shaft sleeve covered partially overlaps with the blade mounting section.

[0011] In some specific embodiments, a mounting hole is further provided on one end of the central rotating shaft sleeve away from the blade mounting section, and the mounting hole passes through the special-shaped engaging section of the shaft hole in a direction perpendicular to the first direction.

[0012] In some specific embodiments, the blades further include an upper side and a lower side, wherein the upper side of each blade is located on a predetermined second plane; the lower side of each blade is located on a predetermined third plane; the second plane and the third plane are parallel to each other; or the second plane and the third plane are parallel to the first plane.

[0013] In some embodiments, the width of the upper side is consistent with the width of the lower side. In one embodiment, the upper side and the lower side include rounded edges.

[0014] In one specific embodiment, the projections of the blades along the first direction onto the first plane do not overlap. In practical applications, by arranging the blades to not overlap in the first direction, a more stable and uniform flow environment can be provided for each blade, allowing each blade to operate in a relatively undisturbed fluid. The thrust generated by the fluid can be more evenly distributed across the blade surfaces of each blade, thereby improving the balance and stability of the propeller. Furthermore, due to less interference between the blades, stress distribution is more uniform, which can extend the service life of the propeller.

[0015] In some specific embodiments, the angle formed by the first end and the first plane is greater than or equal to 45 degrees; the angle formed by the second end and the first plane is less than or equal to 30 degrees.

[0016] In a second aspect, an underwater pool cleaning robot is provided, comprising a robot body, a drive device, and any propeller according to the aforementioned technical solution, wherein the propeller is used to provide thrust to the robot body under the drive of the drive device.

[0017] Beneficial Effects: This application provides a propeller and an underwater pool cleaning robot equipped with the same. The propeller comprises a central rotating shaft sleeve and blades. By providing a portion or the entirety of the central rotating shaft sleeve as a blade mounting section, the blades are evenly positioned and their shapes are optimized. This effectively improves the stability of the propeller during operation, makes the force applied to the propeller more uniform during operation, and improves the structural strength and durability of the propeller. It also reduces noise and vibration during operation, improving its fluid dynamics performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0020] Figure 2 This is a side structural schematic diagram of the present utility model.

[0021] Figure 3 This is a schematic diagram of a top view structure of the utility model;

[0022] Figure 4 This is another schematic diagram of the top view structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the angle and height marking of the utility model;

[0024] Figure 6 This is a schematic diagram of the preset plane position of the utility model.

[0025] The reference numerals and names in the figure are as follows: 1-center shaft sleeve; 11-blade mounting section; 12-axis hole; 121-special-shaped engaging section; 13-mounting hole; 2-blade; 21-first end; 22-second end; 23-upper side; 24-lower side; 3-blade structure; A-preset first direction. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings to fully understand the purpose, characteristics and effects of the present invention.

[0027] Various embodiments of the present invention will be described more fully below. The present invention can have various embodiments, and modifications and variations can be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present invention to the specific embodiments disclosed herein, but rather that the present invention should be construed to encompass all modifications, equivalents, and / or alternatives falling within the spirit and scope of the various embodiments of the present invention.

[0028] Hereinafter, the terms "include" or "may include" used in various embodiments of the present invention indicate the presence of disclosed functions, operations, or elements, and do not limit the addition of one or more functions, operations, or elements. In addition, as used in various embodiments of the present invention, the terms "include", "have" and their cognates are intended only to indicate specific features, numbers, steps, operations, elements, components, or combinations of the foregoing, and should not be understood as first excluding the presence of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing or the possibility of adding one or more features, numbers, steps, operations, elements, components, or combinations of the foregoing.

[0029] In various embodiments of the present invention, the expression "or" or "at least one of A or / and B" includes any or all combinations of the words listed simultaneously. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0030] The expressions (such as "first", "second", etc.) used in the various embodiments of the present invention may modify the various components in the various embodiments, but may not limit the corresponding components. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used to distinguish one element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, without departing from the scope of the various embodiments of the present invention, the first element may be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0031] It should be noted that, in this utility model, unless otherwise specified or defined, terms such as "installation," "connection," and "fixation" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0032] In the present invention, those skilled in the art need to understand that the terms indicating orientation or positional relationships herein are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] The terms used in the various embodiments of the present invention are only used to describe the purpose of specific embodiments and are not intended to limit the various embodiments of the present invention. As used herein, the singular form is intended to also include the plural form, unless the context clearly indicates otherwise. Unless otherwise specified, all terms used herein (including technical terms and scientific terms) have the same meaning as those generally understood by those skilled in the art of the various embodiments of the present invention. The terms (such as those defined in generally used dictionaries) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning, unless clearly specified in the various embodiments of the present invention.

[0034] Example 1

[0035] This embodiment provides a propeller that can solve the problems of existing propellers being too large and having insufficient stability. The details are as follows:

[0036] In the first aspect, a propeller is provided, comprising a central rotating shaft sleeve 1 and blades 2. Part or all of the central rotating shaft sleeve 1 is a blade 2 mounting section 11; the central rotating shaft sleeve 1 extends along a preset first direction and is perpendicular to a preset first plane, and the blade 2 comprises a first end 21 and a second end 22 away from the first end 21; at least three blades 2 are fixedly connected to the blade 2 mounting section 11 via the first end 21, and the distance between the first end 21 of each blade 2 is consistent. Wherein, the preset first direction is as follows: Figure 6 Shown in direction A.

[0037] The angle formed between the first end 21 and the first plane is greater than the angle formed between the second end 22 and the first plane, and the length of the first end 21 is less than the length of the second end 22 , so as to form a curved surface on the blade 2 .

[0038] In some specific embodiments, at least one axial hole 12 is further included, which passes through the central rotating sleeve 1 in the extension direction of the central rotating sleeve 1. The axial hole 12 is symmetrical with respect to the axis of the central rotating sleeve 1 and is used to allow external structures to enter.

[0039] In some specific embodiments, the inner wall of the shaft hole 12 further includes a special-shaped engaging section 121 covering a portion of the length of the shaft hole 12. The special-shaped engaging section 121 is used to allow the external structure to enter and be fixedly engaged in the central shaft sleeve 1. The shape of the special-shaped engaging section 121 is as follows: Figure 1 or Figure 3 By providing the special-shaped engaging section 121, the external connecting member that matches the special-shaped engaging section 121 will not rotate relative to the shaft hole 12 after entering the shaft hole 12, and can be connected to the shaft hole 12 more stably.

[0040] In some specific embodiments, Figure 4 As shown, a blade structure 3 is provided along part or all of the outward-facing edge of the second end portion 22. In actual use, when a propeller is operating in the water, it is prone to accidents such as the propeller becoming entangled in foreign matter such as waterweed or garbage. These foreign objects not only damage the blades 2 but also reduce or prevent further operation of the propeller, shortening the propeller's lifespan. By providing the blade structure 3 along the outward-facing edge of the second end portion 22 of the propeller, the propeller can quickly cut through foreign matter such as waterweed or garbage, ensuring that the propeller's operation is not interfered with by foreign matter in the water.

[0041] In some specific embodiments, the blade 2 mounting section 11 covers a portion of the length of the central rotating shaft sleeve 1, and one end of the blade 2 mounting section 11 coincides with one end of the central rotating shaft sleeve 1, such as Figure 2 One end of the special-shaped engaging section 121 overlaps with the end of the central rotating shaft sleeve 1 away from the blade 2 mounting section 11; a portion of the length of the special-shaped engaging section 121 corresponding to the length of the central rotating shaft sleeve 1 overlaps with the blade 2 mounting section 11.

[0042] In some specific embodiments, a mounting hole 13 is further provided on the end of the central rotating shaft sleeve 1 away from the mounting section 11 of the blade 2. The mounting hole 13 extends perpendicularly to the first direction through the special-shaped engaging section 121 of the shaft hole 12. By providing the mounting hole 13 extending through the special-shaped engaging section 121, the central rotating shaft sleeve 1 can be fixedly mounted to the external structure in more directions, further enhancing the installation stability of the propeller.

[0043] In some specific embodiments, the blades 2 further include an upper side 23 and a lower side 24. The upper side 23 of each blade 2 lies on a predetermined second plane, and the lower side 24 of each blade 2 lies on a predetermined third plane. The second and third planes are parallel to each other, or are parallel to the first plane.

[0044] In a specific embodiment, the third plane may coincide with the first plane, such as Figure 6 By arranging the upper side 23 or the lower side 24 of each blade 2 on the same plane, the edge of the propeller can be made more regular, and the volume of the propeller can be reduced without affecting the propulsion force provided by the propeller. This makes the space required for the propeller to rotate smaller, thereby reducing the space occupied by the underwater pool cleaning robot.

[0045] In some embodiments, the width of the upper side 23 is the same as the width of the lower side 24. In one embodiment, the upper side 23 and the lower side 24 include rounded edges.

[0046] In one specific embodiment, the projections of the blades 2 along the first direction onto the first plane do not overlap. In practical applications, by arranging that the blades 2 do not overlap in the first direction, a more stable and uniform flow environment can be provided for each blade 2, so that each blade 2 can operate in a relatively undisturbed fluid. The thrust generated by the fluid can be more evenly distributed on the blade surface of each blade 2, which can improve the balance and stability of the propeller. Furthermore, since there is less interference between the blades 2, the stress distribution is more uniform, which can extend the service life of the propeller.

[0047] In some specific embodiments, the angle formed between the first end 21 and the first plane is greater than or equal to 45 degrees; the angle formed between the second end 22 and the first plane is less than or equal to 30 degrees. Figure 5 As shown, the portion on the center rotating shaft sleeve 1 is the blade 2 mounting section 11, and the length h of the center rotating shaft sleeve 1 is greater than the length d of the blade 2 mounting section 11. The angle formed by the second end 22 and the first plane is α. In a specific embodiment, the angle α is 28.1°, and the ratio of the length h to the length d can be 8:5. In a specific embodiment, the length of the center rotating shaft sleeve 1 is 28 cm, the length of the blade 2 mounting section 11 covering the center rotating shaft sleeve 1 is 17.5 cm, and the overall diameter of the propeller is 42 cm, wherein the diameter of the shaft hole 12 on the center rotating shaft sleeve 1 is 4 cm. It should be noted that this embodiment does not specifically limit the length and width parameters of each component, but only provides one of the solutions. In actual applications, these specific parameters can be adaptively adjusted according to actual conditions to achieve the best effect.

[0048] This embodiment proposes a propeller, which, by setting part or all of the central rotating shaft sleeve as a blade mounting section, evenly setting the position of the blades and optimizing the shape of the blades, can effectively improve the stability of the propeller during operation, make the force applied to the propeller during operation more uniform, reduce the overall volume of the propeller, and make it easy to install while also having high structural strength and durability. It can also reduce the noise and vibration of the propeller during operation and improve its fluid dynamic performance.

[0049] Example 2

[0050] This embodiment provides an underwater pool cleaning robot, comprising a robot body, a driving device, and any one of the propellers mentioned in the above technical solutions, wherein the propeller is used to provide thrust to the robot body under the drive of the driving device.

[0051] The driving device is located inside the robot body. In a specific embodiment, the robot body is provided with a accommodating cavity in the direction of the position where it needs to be propelled, with one end connected to the position where the driving device is located and the other end leading to the outside of the robot body. The propeller is placed in the accommodating cavity and further connected to the driving device in the robot body. The propeller can rotate under the drive of the driving device during underwater operation, thereby generating a driving force for the robot body.

[0052] This embodiment provides an underwater pool cleaning robot. A propeller is placed within a housing cavity within the robot, allowing the propeller to propel the robot. This propeller occupies less space within the robot, further reducing the size of the underwater pool cleaning robot.

[0053] The above is a specific description of the preferred implementation of the present invention, but the invention of the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A propeller, characterized in that: Including center shaft sleeve and blades; Part or all of the central rotating shaft sleeve is a blade mounting section; the central rotating shaft sleeve extends along a preset first direction and is perpendicular to a preset first plane; the blade includes a first end and a second end away from the first end; at least three blades are fixedly connected to the blade mounting section via the first ends, and the first ends of the blades are uniformly spaced. An angle formed by the first end and the first plane is greater than an angle formed by the second end and the first plane, and a length of the first end is less than a length of the second end, so as to form a curved surface on the blade.

2. A propeller according to claim 1, characterized in that: It also includes at least one axial hole that passes through the central rotating shaft sleeve in the extension direction of the central rotating shaft sleeve, and the axial hole is symmetrical with respect to the axis of the central rotating shaft sleeve, for allowing external structures to enter.

3. A propeller according to claim 2, characterized in that: The inner side wall of the shaft hole also includes a special-shaped engaging section covering a partial length range of the shaft hole, and the special-shaped engaging section is used to allow the external structure to enter and be fixedly engaged in the central rotating shaft sleeve.

4. A propeller according to claim 2, characterized in that: A blade structure is provided along part or all of the protrusion of the edge of the second end facing outward.

5. A propeller according to claim 3, characterized in that: The blade mounting section covers a portion of the length of the central rotating shaft sleeve, and one end of the blade mounting section coincides with one end of the central rotating shaft sleeve; One end of the special-shaped engaging section overlaps with an end of the central rotating shaft sleeve away from the blade mounting section; a portion of the special-shaped engaging section corresponding to the length range covering the central rotating shaft sleeve overlaps with the blade mounting section.

6. A propeller according to claim 5, characterized in that: A mounting hole is further provided on one end of the central rotating shaft sleeve away from the blade mounting section, and the mounting hole passes through the special-shaped engaging section of the shaft hole in a direction perpendicular to the first direction.

7. A propeller according to claim 1, characterized in that: The blade further includes an upper side and a lower side; The upper side of each blade is located on a preset second plane; The lower side of each blade is located on a preset third plane; The second plane and the third plane are parallel to each other; or The second plane and the third plane are parallel to the first plane.

8. A propeller according to claim 1, characterized in that: The projections of the blades on the first plane along the first direction do not overlap.

9. A propeller according to claim 1, characterized in that: An angle formed between the first end and the first plane is greater than or equal to 45 degrees; an angle formed between the second end and the first plane is less than or equal to 30 degrees.

10. An underwater swimming pool cleaning robot, characterized in that: comprising a robot body, a driving device, and a propeller according to any one of claims 1 to 9; The propeller is used to provide thrust to the robot body under the drive of the driving device.

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