Efficient and stable brushless roller motor for gardens
By designing a brush in the garden mower to clean the dust on the heat dissipation cover and using the reciprocating motion of the spiral blades to expel hot air, the problems of motor heating and cutting blade clogging are solved, achieving efficient and stable motor heat dissipation and cutting blade cleaning, and extending the life of the equipment.
Patent Information
- Application Number
- CN202422898837.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-27
AI Technical Summary
The motors of existing garden mowers easily overheat and have poor heat dissipation, which leads to reduced performance and affects overall efficiency.
A high-efficiency and stable brushless drum motor for gardening has been designed. A brush is used to clean the dust on the heat dissipation cover. The reciprocating motion of the spiral blade pushes the hot air into the paint spray chamber and exhausts it. The hot air is sprayed to soften and blow away the grass clippings on the cutting blade to prevent clogging.
Effectively clean the dust on the heat dissipation cover to ensure heat dissipation efficiency, prevent the cutting blade from clogging, extend the life of the equipment, improve system stability and efficient operation of the cutting blade.
Smart Images
Figure CN223379661U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field related to garden brushless motors, and more specifically, relates to a high-efficiency and stable brushless roller motor for gardens. Background Art
[0002] The development of garden lawn mowers has undergone a transition from manual to mechanized operation. Initially, people relied primarily on hand tools for lawn mowing, which was not only inefficient but also labor-intensive. With technological advancements, internal combustion engine-powered lawn mowers emerged, greatly improving lawn mowing efficiency. However, existing garden lawn mowers were prone to overheating during use, and the heat dissipation cavity was easily blocked. This seriously affected the heat dissipation of the mower, causing the internal temperature to rise, further exacerbating the overheating of the motor. This overheating also led to performance degradation, such as reduced power and slower speed, which affected the overall performance and efficiency of the mower.
[0003] Therefore, in view of this, the existing structure and defects are studied and improved, and a high-efficiency and stable brushless drum motor for gardening is provided, in order to achieve the purpose of having more practical value. Utility Model Content
[0004] The utility model provides a high-efficiency and stable brushless roller motor for gardening, which is used to overcome the above-mentioned defects in the prior art.
[0005] The purpose and effect of the utility model of a high-efficiency and stable brushless roller motor for gardening are achieved by the following specific technical means:
[0006] A high-efficiency and stable brushless roller motor for gardening comprises: a lawn mower mounting frame, a diesel power engine and a motor housing assembly, wherein the diesel power engine and the motor housing assembly are mounted on the outside of the lawn mower mounting frame, the diesel power engine is arranged behind the motor housing assembly, the motor housing assembly comprises a heat dissipation cover and a motor mounting cylinder, the heat dissipation cover is arranged above the motor mounting cylinder, the heat dissipation cover is connected to the motor mounting cylinder to form a mounting cavity, a heat dissipation outer cylinder is installed inside the mounting cavity, a heat dissipation inner cylinder is provided inside the heat dissipation outer cylinder, a closed ring is provided at the front end of the heat dissipation inner cylinder, the closed ring is in contact with the inner wall of the heat dissipation outer cylinder, an inner cavity is provided inside the heat dissipation inner cylinder, a stator is mounted inside the inner cavity, a rotor is provided inside the stator, a rotating shaft is provided inside the rotor, a spiral blade is connected to the end of the rotating shaft, a reciprocating helical gear is provided on the outer side of the end of the rotating shaft, and the heat dissipation inner cylinder moves on the reciprocating helical gear.
[0007] According to a further technical solution, a paint spraying chamber is provided in the heat dissipation outer cylinder, and the paint spraying chamber is arranged below the heat dissipation inner cylinder.
[0008] According to a further technical solution, an annular plate is installed at the bottom of the heat dissipation outer cylinder, and a plurality of jet valves are provided in an annular array on the surface of the annular plate, and the jet valves are connected to the paint spray chamber.
[0009] According to a further technical solution, a plurality of air intake valves are arranged in an array on the outer side surface of the heat dissipation inner cylinder, the air intake valves are connected to the inner cavity, and the inner cavity is connected to the paint spraying cavity.
[0010] According to a further technical solution, a plurality of contact blocks are arranged in an annular and staggered manner on the inner wall of the heat dissipation inner cylinder, and a through groove communicating with the inner cavity is provided inside the contact block.
[0011] According to a further technical solution, a top plate is fixedly mounted on the outer side of the spiral blade, and a plurality of brushes are arranged in an array on the surface of the top plate.
[0012] A further technical solution is that a sealed bearing is provided on the outside of the rotating shaft, the sealed bearing is installed on the inner side of the annular plate, the output end of the rotating shaft is fixedly connected to a drive connecting shaft, the lower part of the drive connecting shaft is provided with a cutting blade, and the cutting blade is connected to the drive connecting shaft through a fixing bolt.
[0013] According to a further technical solution, heat dissipation holes are provided on the outside of the heat dissipation cover, and the heat dissipation holes are in contact with the brush.
[0014] A further technical solution is that a hand push frame assembly is installed on the outside of the lawn mower mounting frame, and the hand push frame assembly includes a first-level hand push frame and a second-level hand push frame. One end of the first-level hand push frame is connected to the lawn mower mounting frame, and the other end of the first-level hand push frame is rotatably connected to the outside of the second-level hand push frame. A scheduling adjustment bolt is provided at the connection between the second-level hand push frame and the first-level hand push frame.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] This utility model discloses a high-efficiency and stable brushless roller motor for gardening. It features a brush, inner heat sink, and outer heat sink. As the spiral blades rotate, the brushes attached to their outer sides come into contact with the inner wall of the heat sink hood, effectively cleaning dust from the hood during rotation and discharging it. Regular dust removal ensures the heat dissipation efficiency of the hood is not affected, extending the life of the equipment and improving the overall system stability. As the shaft rotates, the heat sink inner barrel performs a spiral reciprocating motion on its surface. This motion also causes the heat sink inner barrel to reciprocate inside the heat sink outer barrel. This reciprocating motion compresses the hot air within the inner chamber and pushes it into the paint spray chamber. When the gas in the paint spray chamber reaches a certain volume, it is discharged through an air jet valve. The discharged gas then sprays the cutting blade. This hot air injection softens and removes grass clippings left on the cutting blade during mowing, preventing clogging on the blade surface, ensuring normal use of the cutting blade and avoiding any problems. Furthermore, through the spiral reciprocating motion of the heat dissipation inner cylinder on the rotating shaft, the hot air in the inner cavity is effectively squeezed and pushed into the spray chamber. Once a certain amount of hot air has been pushed into the spray chamber, it is discharged through the air jet valve and sprayed onto the cutting blade. This hot air injection softens and removes grass clippings left on the cutting blade during mowing, effectively preventing clogging on the cutting blade surface and ensuring the continued efficient operation of the cutting blade. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the top view of the structure of the utility model;
[0018] Figure 2 It is a schematic diagram of the overall structure of the utility model;
[0019] Figure 3 This is a schematic diagram of the overall side structure of the utility model;
[0020] Figure 4 This is a schematic diagram of the overall side sectional structure of the utility model;
[0021] Figure 5 It is a schematic diagram of the internal overall structure of the utility model;
[0022] Figure 6 This is a schematic diagram of the overall internal front view structure of the utility model;
[0023] Figure 7 This is a schematic diagram of the overall internal top view of the utility model;
[0024] Figure 8This is a schematic diagram of the internal overall side sectional structure of the utility model;
[0025] Figure 9 It is a schematic side sectional view of the overall structure of the heat dissipation outer cylinder 18 and the heat dissipation inner cylinder 19 in the present invention.
[0026] Description of reference numerals:
[0027] Mower mounting frame 11, diesel engine 12, motor housing assembly 13, hand push frame assembly 14, heat dissipation cover 15, air intake valve 16, cutting blade 17, heat dissipation outer cylinder 18, heat dissipation inner cylinder 19, top plate 20, brush 21, spiral blade 22, mounting cavity 23, motor mounting cylinder 24, first-level hand push frame 25, scheduling adjustment bolt 26, second-level hand push frame 27, stator 28, rotor 29, rotating shaft 30, contact block 31, drive connecting shaft 32, inner cavity 33, paint spraying cavity 34, sealed ring 35, annular plate 36, jet valve 37, heat dissipation hole 38, sealed bearing 39, fixing bolt 40. DETAILED DESCRIPTION
[0028] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0029] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0030] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances. Example
[0031] As attached Figure 1 To the attached Figure 9 As shown:
[0032] The utility model provides a high-efficiency and stable brushless roller motor for gardening.
[0033] Refer to the attached Figure 1 To the attached Figure 9 , including: a lawn mower mounting frame 11, a diesel engine 12 and a motor housing assembly 13, the diesel engine 12 and the motor housing assembly 13 are installed on the outside of the lawn mower mounting frame 11, the diesel engine 12 is arranged behind the motor housing assembly 13, the motor housing assembly 13 includes a heat dissipation cover 15 and a motor mounting cylinder 24, the heat dissipation cover 15 is arranged above the motor mounting cylinder 24, the heat dissipation cover 15 and the motor mounting cylinder 24 are connected to form a mounting cavity 23, and a heat dissipation outer cylinder 18 is installed inside the mounting cavity 23 A heat dissipation inner cylinder 19 is provided inside the heat dissipation outer cylinder 18, and a sealed ring 35 is provided at the front end of the heat dissipation inner cylinder 19. The sealed ring 35 contacts the inner wall of the heat dissipation outer cylinder 18, and an inner cavity 33 is provided inside the heat dissipation inner cylinder 19. A stator 28 is installed inside the inner cavity 33, and a rotor 29 is provided inside the stator 28. A rotating shaft 30 is provided on the inner side of the rotor 29, and a spiral blade 22 is connected to the end of the rotating shaft 30. A reciprocating helical gear is provided on the outer side of the end of the rotating shaft 30, and the heat dissipation inner cylinder 19 moves on the reciprocating helical gear.
[0034] Preferably, refer to the attached Figure 8 A paint spraying chamber 34 is provided in the heat dissipation outer cylinder 18 , and the paint spraying chamber 34 is provided below the heat dissipation inner cylinder 19 .
[0035] Preferably, refer to the attached Figure 8 An annular plate 36 is installed at the bottom of the heat dissipation outer cylinder 18 , and a plurality of jet valves 37 are arranged in an annular array on the surface of the annular plate 36 , and the jet valves 37 are connected to the paint spray chamber 34 .
[0036] Preferably, refer to the attached Figure 8 A plurality of air intake valves 16 are arranged in an array on the outer side of the heat dissipation inner cylinder 19 . The air intake valves 16 are connected to the inner cavity 33 , and the inner cavity 33 is connected to the paint spraying cavity 34 .
[0037] Preferably, refer to the attached Figure 8 The inner wall of the heat dissipation inner cylinder 19 is provided with a plurality of contact blocks 31 arranged in an annular staggered manner, and a through groove communicating with the inner cavity 33 is provided inside the contact block 31.
[0038] Preferably, refer to the attached Figure 8 A top plate 20 is fixedly mounted on the outer side of the spiral blade 22 , and a plurality of brushes 21 are arrayed on the surface of the top plate 20 .
[0039] Preferably, refer to the attached Figure 8A sealed bearing 39 is provided on the outside of the rotating shaft 30, and the sealed bearing 39 is installed on the inside of the annular plate 36. A drive connecting shaft 32 is fixedly connected to the output end of the rotating shaft 30, and a cutting blade 17 is provided at the lower part of the drive connecting shaft 32. The cutting blade 17 is connected to the drive connecting shaft 32 by a fixing bolt 40.
[0040] Preferably, refer to the attached Figure 2 and attached Figure 4 The heat dissipation cover 15 is provided with heat dissipation holes 38 on the outside, and the heat dissipation holes 38 are in contact with the brush 21.
[0041] Preferably, refer to the attached Figure 4 A hand push frame assembly 14 is installed on the outside of the lawn mower mounting frame 11. The hand push frame assembly 14 includes a first-level hand push frame 25 and a second-level hand push frame 27. One end of the first-level hand push frame 25 is connected to the lawn mower mounting frame 11, and the other end of the first-level hand push frame 25 is rotatably connected to the outside of the second-level hand push frame 27. A scheduling adjustment bolt 26 is provided at the connection between the second-level hand push frame 27 and the first-level hand push frame 25.
[0042] Specific usage of this utility model:
[0043] In the process of using the present invention, it is first necessary to add diesel to the diesel engine 12. After the diesel is added, the motor housing assembly 13 is then started. Once the motor housing assembly 13 starts running, the stator 28 will first be energized, thereby driving the rotor 29 to rotate. The rotation of the rotor 29 will drive the rotating shaft 30 to rotate, and the rotation of the rotating shaft 30 will further drive the spiral blade 22 to rotate. The rotation of the spiral blade 22 will generate strong wind force and discharge it to the outside. At the same time, during the rotation of the spiral blade 22, the brush 21 installed on its outside will contact the inner wall of the heat dissipation cover 15, so that the brush 21 can clean the dust on the heat dissipation cover 15 during rotation and effectively discharge the dust. When the spiral blade rotates, the brush installed on its outside will contact the inner wall of the heat dissipation cover. This design realizes the cleaning of the dust on the heat dissipation cover. Regular dust cleaning can ensure that the heat dissipation efficiency of the heat dissipation cover is not affected, thereby extending the service life of the equipment and improving the stability of the overall system.
[0044] As the rotating shaft 30 rotates, the heat dissipation inner cylinder 19 performs a spiral reciprocating motion on its surface. This motion also causes the heat dissipation inner cylinder 19 to reciprocate inside the heat dissipation outer cylinder 18. This reciprocating motion squeezes the hot air within the inner cavity 33 and pushes it into the paint spray chamber 34. When the air in the paint spray chamber 34 reaches a certain volume, it is discharged through the air jet valve 37. The discharged air then sprays the cutting blade 17. This hot air injection softens and removes grass clippings left on the cutting blade 17 during mowing, preventing clogging on the cutting blade 17 surface, ensuring proper operation and avoiding any problems. Furthermore, the spiral reciprocating motion of the heat dissipation inner cylinder on the rotating shaft effectively squeezes the hot air in the inner cavity and pushes it into the paint spray chamber. Once the hot air reaches a certain volume, it is discharged through the air jet valve and sprays the cutting blade. This hot air jet can soften and blow away the grass clippings left by the cutting blade during the mowing process, effectively preventing clogging on the cutting blade surface and ensuring the continuous and efficient operation of the cutting blade.
[0045] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.
Claims
1. A high-efficiency and stable brushless drum motor for gardening, comprising a lawn mower mounting frame (11), a diesel engine (12) and a motor housing assembly (13), characterized in that: A diesel engine (12) and a motor housing assembly (13) are installed on the outside of the lawn mower mounting frame (11). The diesel engine (12) is arranged behind the motor housing assembly (13). The motor housing assembly (13) includes a heat dissipation cover (15) and a motor mounting cylinder (24). The heat dissipation cover (15) is arranged above the motor mounting cylinder (24). The heat dissipation cover (15) and the motor mounting cylinder (24) are connected to form a mounting cavity (23). A heat dissipation outer cylinder (18) is installed inside the mounting cavity (23). A heat dissipation inner cylinder is provided inside the heat dissipation outer cylinder (18). (19), a sealed ring (35) is provided at the front end of the heat dissipation inner cylinder (19), the sealed ring (35) contacts the inner wall of the heat dissipation outer cylinder (18), an inner cavity (33) is provided inside the heat dissipation inner cylinder (19), a stator (28) is installed inside the inner cavity (33), a rotor (29) is provided inside the stator (28), a rotating shaft (30) is provided inside the rotor (29), a spiral blade (22) is connected to the end of the rotating shaft (30), a reciprocating helical gear is provided on the outer side of the end of the rotating shaft (30), and the heat dissipation inner cylinder (19) moves on the reciprocating helical gear.
2. The high-efficiency and stable brushless drum motor for gardening according to claim 1, characterized in that: A paint spraying chamber (34) is provided in the heat dissipation outer cylinder (18), and the paint spraying chamber (34) is arranged below the heat dissipation inner cylinder (19).
3. The high-efficiency and stable brushless drum motor for gardening according to claim 2, characterized in that: An annular plate (36) is installed at the bottom of the heat dissipation outer cylinder (18). A plurality of jet valves (37) are arranged in an annular array on the surface of the annular plate (36). The jet valves (37) are communicated with the paint spraying chamber (34).
4. The high-efficiency and stable brushless drum motor for gardening according to claim 3, characterized in that: A plurality of air intake valves (16) are arranged in an array on the outer side surface of the heat dissipation inner cylinder (19); the air intake valves (16) are in communication with the inner cavity (33); and the inner cavity (33) is in communication with the paint spraying cavity (34).
5. The high-efficiency and stable brushless drum motor for gardening according to claim 4, characterized in that: A plurality of contact blocks (31) are arranged in an annular and staggered manner on the inner wall of the heat dissipation inner cylinder (19), and a through groove communicating with the inner cavity (33) is provided inside the contact block (31).
6. The high-efficiency and stable brushless drum motor for gardening according to claim 5, characterized in that: A top plate body (20) is fixedly mounted on the outer side of the spiral blade (22), and a plurality of brushes (21) are arranged in an array on the surface of the top plate body (20).
7. The high-efficiency and stable brushless drum motor for gardening according to claim 6, characterized in that: A sealed bearing (39) is provided on the outside of the rotating shaft (30), and the sealed bearing (39) is installed on the inside of the annular plate (36). A driving connecting shaft (32) is fixedly connected to the output end of the rotating shaft (30), and a cutting blade (17) is provided at the lower part of the driving connecting shaft (32), and the cutting blade (17) is connected to the driving connecting shaft (32) through a fixing bolt (40).
8. The high-efficiency and stable brushless drum motor for gardening according to claim 7, characterized in that: The heat dissipation cover (15) is provided with heat dissipation holes (38) on the outside, and the heat dissipation holes (38) are in contact with the brush (21).
9. The high-efficiency and stable brushless drum motor for gardening according to claim 1, characterized in that: A push frame assembly (14) is installed on the outer side of the mower mounting frame (11), and the push frame assembly (14) includes a primary push frame (25) and a secondary push frame (27). One end of the primary push frame (25) is connected to the mower mounting frame (11), and the other end of the primary push frame (25) is rotatably connected to the outer side of the secondary push frame (27). A scheduling adjustment bolt (26) is provided at the connection between the secondary push frame (27) and the primary push frame (25).