A low-noise electric lawnmower

Abstract

This utility model discloses a low-noise electric lawnmower, relating to the field of lawnmower technology. It includes a frame with a U-shaped structure and a drive assembly at the bottom. A motor is mounted inside the frame, moving vertically, and a mowing assembly is fixedly mounted on the motor's output shaft. The mowing assembly includes a fixed cover, an adjusting post, and mowing blades. The upper surface of the fixed cover is fixedly connected to the motor's output shaft, and the adjusting post is fixedly mounted at the bottom. Three mowing blades are slidably mounted on the bottom side of the adjusting post. This utility model utilizes a rotating shaft, worm gear, worm, and adjusting disc. Rotating the adjusting disc drives the rotating disc via the worm gear, causing the connecting rod to slide along the guide groove, simultaneously adjusting the spacing between the three sets of mowing blades. This allows for free adjustment of the mowing range, enabling efficient handling of large lawns while precisely trimming corner areas, reducing repetitive trimming, optimizing the work path, and achieving energy-efficient and intelligent lawn maintenance.

Description

Technical Field

[0001] This utility model relates to the field of lawnmower technology, and in particular to a low-noise electric lawnmower. Background Technology

[0002] Lawn trimmers are mainly used for garden decoration trimming, lawn greening trimming, urban street, green scenic spot, field trimming, especially lawns and grasslands in parks, football fields and other grass-using areas, private villa gardens, and vegetation trimming in agricultural, forestry and livestock farms.

[0003] A lawn maintenance device disclosed in Chinese Patent CN221553958U includes a maintenance vehicle, a height-adjustable mower, and a spraying device. The maintenance vehicle has a drive chamber, and the height-adjustable mower is located in the drive chamber. The height-adjustable mower includes a fixed frame, a lifting plate, a lifting screw, a lifting nut, a drive gear, a lifting motor, and an electric mower. The lifting plate has sliding collars on both sides, which are slidably mounted on the fixed frame. The electric mower is mounted on the lifting plate, and the lifting nut is rotatably mounted on the fixed frame. The lifting screw is mounted on the lifting plate and is threaded through the fixed frame and the lifting nut. The outer side of the lifting nut is gear-shaped.

[0004] The existing lawnmowers mentioned above can only adjust the mowing height to a limited extent through their mechanical structure, and cannot flexibly adjust the mowing range according to actual needs. This greatly limits the practicality and efficiency of the equipment. Traditional lawnmowers typically have a fixed cutting width, forcing operators to repeatedly adjust their routes or change to different sizes of equipment when dealing with lawns of varying sizes and shapes. This increases workload and wastes time. Especially when dealing with narrow passages, corner areas, or complex terrain, equipment with a fixed mowing range often struggles to achieve precise trimming, easily leaving untrimmed blind spots or causing over-trimming. Furthermore, when maintaining landscaped lawns, the inability to freely adjust the mowing width makes it difficult to achieve diverse horticultural effects. These functional limitations not only affect the quality of work but also restrict the applicability of the equipment, forcing users to equip themselves with multiple machines of different sizes to meet diverse lawn maintenance needs, increasing operating costs and storage space requirements.

[0005] To address the aforementioned problems, this utility model proposes a low-noise electric lawnmower. Utility Model Content

[0006] To address the problems existing in the background technology, this utility model proposes a low-noise electric lawnmower.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a low-noise electric lawnmower, comprising a frame, the frame having an overall U-shaped structure, and a drive assembly at the bottom of the frame; a motor is installed inside the frame that moves up and down, and a mowing assembly is fixedly installed on the output shaft of the motor; the mowing assembly includes a fixed cover, an adjusting column, and mowing blades; the upper end of the fixed cover is fixedly connected to the output shaft of the motor, and the adjusting column is fixedly installed at the bottom of the fixed cover, with three mowing blades slidably mounted on the bottom side of the adjusting column; an adjusting assembly for adjusting the distance between the three mowing blades is provided on the fixed cover and the adjusting column.

[0008] The present invention is further configured such that the adjusting component includes a connecting rod and a rotating disk; three guide grooves are evenly opened around the axis of the adjusting column, and a connecting rod is slidably installed inside each guide groove; a grass cutter is fixedly installed at the bottom end of the connecting rod; a rotating disk is rotatably installed on the upper end face of the adjusting column; an arc-shaped guide groove is opened on the rotating disk at the position corresponding to the three connecting rods; and the top end of the connecting rod slides in cooperation with the corresponding arc-shaped guide groove.

[0009] The present invention is further configured such that a first sliding groove is provided on the inner wall of each guide groove, a first slider is slidably installed inside each first sliding groove, the first slider is fixedly connected to the corresponding connecting rod, and a spring is fixedly installed inside each first sliding groove, the other end of the spring being fixedly connected to the corresponding connecting rod.

[0010] The present invention is further configured such that a rotating shaft is rotatably mounted on the upper end face of the adjusting column, a rotating disk is fixedly mounted on the outside of the rotating shaft, a worm gear is fixedly mounted on the top end of the rotating shaft, a worm is rotatably mounted inside the fixed cover, the worm is meshed with the worm gear, and one end of the worm extends out of the inside of the fixed cover and is fixedly mounted on the adjusting disk.

[0011] The present invention is further configured such that a second sliding groove is provided on both sides of the inner wall of the frame, and a second slider is slidably installed inside the second sliding groove, and the second slider is fixedly connected to the motor.

[0012] The present invention is further configured such that a hydraulic telescopic rod is fixedly installed at the top of the frame, and the telescopic end of the hydraulic telescopic rod is fixedly connected to the top of the motor.

[0013] The present invention is further configured such that the drive assembly includes wheels and a dual-axis motor, and a support plate is fixedly installed at each of the four corners at the bottom of the frame, and a wheel is rotatably installed on each support plate. The dual-axis motor is fixedly installed on the opposite surface of one side of the support plate, and the output shafts on both sides of the dual-axis motor are fixedly connected to the corresponding wheels.

[0014] The present invention is further provided that both sides of the frame are provided with storage slots, and multiple storage racks are fixedly installed inside the storage slots.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This low-noise electric lawnmower features a rotating shaft, worm gear, worm, and adjustment disc. The rotating adjustment disc, driven by the worm gear, rotates a central disc, causing a connecting rod to slide along a guide groove, simultaneously adjusting the spacing between the three sets of mowing blades. This allows for free adjustment of the mowing range, enabling efficient handling of large lawns as well as precise trimming of corner areas. It solves the problem of blind spots caused by the fixed mowing width in traditional models, improving operational adaptability, reducing repetitive mowing, optimizing the mowing path, and achieving energy-efficient and intelligent lawn maintenance. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the motor structure of this utility model;

[0020] Figure 3 This is a partial cross-sectional view of the present invention.

[0021] Reference numerals in the attached diagram: 1. Frame; 2. Motor; 3. Fixed cover; 4. Adjusting column; 5. Grass cutter; 6. Connecting rod; 7. Rotating disc; 8. Guide groove; 9. Arc-shaped guide groove; 10. First slide groove; 11. First slider; 12. Rotating shaft; 13. Worm gear; 14. Worm; 15. Adjusting disc; 16. Second slide groove; 17. Second slider; 18. Hydraulic telescopic rod; 19. Wheel; 20. Dual-axis motor; 21. Support plate; 22. Storage slot; 23. Storage rack; 24. Spring. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0025] Please see Figure 1-3 This utility model provides a technical solution: a low-noise electric lawnmower, including a frame 1, which has an overall U-shaped structure, and a drive assembly is provided at the bottom of the frame 1. The drive assembly includes wheels 19 and a dual-axis motor 20. Support plates 21 are fixedly installed at the four corners of the bottom of the frame 1, and wheels 19 are rotatably mounted on each support plate 21. The dual-axis motor 20 is fixedly installed on the opposite surface of one side of the support plate 21, and the output shafts on both sides of the dual-axis motor 20 are fixedly connected to the corresponding wheels 19.

[0026] The frame 1 is equipped with a motor 2 that moves up and down inside. Specifically, the inner walls of the frame 1 are provided with second slide grooves 16 on both sides. Second sliders 17 are slidably installed inside the second slide grooves 16 and are fixedly connected to the motor 2.

[0027] In this embodiment of the utility model: a hydraulic telescopic rod 18 is fixedly installed at the top of the frame 1, and the telescopic end of the hydraulic telescopic rod 18 is fixedly connected to the top of the motor 2.

[0028] A mowing assembly is fixedly mounted on the output shaft of motor 2. The mowing assembly includes a fixed cover 3, an adjusting post 4, and mowing blades 5. The upper end of the fixed cover 3 is fixedly connected to the output shaft of motor 2, and the adjusting post 4 is fixedly mounted on the bottom end of the fixed cover 3. Three mowing blades 5 are slidably mounted on the bottom side of the adjusting post 4.

[0029] An adjustment assembly for adjusting the distance between the three mower blades 5 is provided on the fixed cover 3 and the adjusting column 4. The adjustment assembly includes a connecting rod 6 and a rotating disk 7. Three guide grooves 8 are evenly formed around the axis of the adjusting column 4. The connecting rod 6 is slidably installed inside each guide groove 8. The mower blade 5 is fixedly installed at the bottom end of the connecting rod 6. The rotating disk 7 is rotatably mounted on the upper end surface of the adjusting column 4. An arc-shaped guide groove 9 is formed on the rotating disk 7 at the position corresponding to the three connecting rods 6. The top end of the connecting rod 6 slides in the corresponding arc-shaped guide groove 9. The inner wall of the arc-shaped guide groove 9 is smooth to reduce frictional wear of the connecting rod 6.

[0030] Specifically, a first sliding groove 10 is provided on the inner wall of the guide groove 8, and a first slider 11 is slidably installed inside the first sliding groove 10. The first slider 11 is fixedly connected to the corresponding connecting rod 6. A spring 24 is fixedly installed inside the first sliding groove 10, and the other end of the spring 24 is fixedly connected to the corresponding connecting rod 6.

[0031] In this embodiment of the invention: a rotating shaft 12 is rotatably mounted on the upper end face of the adjusting column 4. The rotating shaft 12 is supported by bearings to reduce rotational resistance. A rotating disk 7 is fixedly mounted on the outside of the rotating shaft 12. A worm gear 13 is fixedly mounted on the top end of the rotating shaft 12. A worm 14 is rotatably mounted inside the fixed cover 3. The worm 14 meshes with the worm gear 13. One end of the worm 14 extends out of the interior of the fixed cover 3 and is fixedly mounted on the adjusting disk 15. The surface of the adjusting disk 15 is provided with anti-slip texture to increase friction during operation and prevent hand slippage.

[0032] In this embodiment of the utility model: both sides of the frame 1 are provided with storage slots 22, and multiple storage racks 23 are fixedly installed inside the storage slots 22.

[0033] Working principle:

[0034] In use, the dual-axis motor 20 is activated to rotate the wheels 19, causing the entire device to move. The extension and retraction of the hydraulic telescopic rod 18 ensures accurate adjustment of the mowing height. The hydraulic telescopic rod 18 drives the motor 2 and the mowing assembly to move up and down. After the mowing height is adjusted, the mowing assembly remains in a fixed position to prevent changes in height from affecting the mowing effect during operation.

[0035] When the mowing range needs to be adjusted, the adjustment disc 15 is rotated. The rotation of the adjustment disc 15 drives the worm gear 14 to rotate, and the worm gear 14 meshes with the worm wheel 13. The rotation of the worm wheel 13 drives the rotating disc 7 to rotate synchronously through the rotating shaft 12. The rotation of the rotating disc 7 causes a sliding engagement between the connecting rod 6 and the arc-shaped guide groove 9. The connecting rod 6 slides inside the guide groove 8, which adopts a limiting structure to prevent the connecting rod 6 from derailing and ensure the stability of the adjustment process. The connecting rod 6 drives the mowing blades 5 to move. The three mowing blades 5 move closer or further apart, realizing stepless adjustment of the mowing range to adapt to different width operation needs. The synchronous adjustment of the three mowing blades 5 avoids the noise generated by asymmetrical movement.

[0036] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A low-noise electric lawn mower comprising a frame (1), characterized in that: The frame (1) is U-shaped in shape, and a drive assembly is provided at the bottom of the frame (1). A motor (2) is installed inside the frame (1) to move up and down. A mowing assembly is fixedly installed on the output shaft of the motor (2). The mowing assembly includes a fixed cover (3), an adjusting column (4), and mowing blades (5). The upper end of the fixed cover (3) is fixedly connected to the output shaft of the motor (2). An adjusting column (4) is fixedly installed at the bottom of the fixed cover (3). Three mowing blades (5) are slidably installed on the bottom side of the adjusting column (4). An adjusting assembly for adjusting the distance between the three mowing blades (5) is provided on the fixed cover (3) and the adjusting column (4).

2. A low noise electric lawn mower according to claim 1, wherein: The adjustment assembly includes a connecting rod (6) and a rotating disk (7); three guide grooves (8) are evenly provided on the adjusting column (4) around the axis of the adjusting column (4), and the connecting rod (6) is slidably installed inside the guide groove (8). The grass cutter (5) is fixedly installed at the bottom end of the connecting rod (6). The rotating disk (7) is rotatably provided on the upper end surface of the adjusting column (4). The rotating disk (7) is provided with arc-shaped guide grooves (9) at the positions corresponding to the three connecting rods (6), and the top end of the connecting rod (6) slides in cooperation with the corresponding arc-shaped guide groove (9).

3. A low noise electric lawn mower according to claim 2 wherein: The inner wall of the guide groove (8) is provided with a first sliding groove (10), and a first slider (11) is slidably installed inside the first sliding groove (10). The first slider (11) is fixedly connected to the corresponding connecting rod (6). A spring (24) is fixedly installed inside the first sliding groove (10), and the other end of the spring (24) is fixedly connected to the corresponding connecting rod (6).

4. A low-noise electric lawnmower according to claim 1, characterized in that: A rotating shaft (12) is rotatably mounted on the upper end face of the adjusting column (4), and a rotating disk (7) is fixedly mounted on the outside of the rotating shaft (12). A worm wheel (13) is fixedly mounted on the top end of the rotating shaft (12), and a worm (14) is rotatably mounted inside the fixed cover (3). The worm (14) meshes with the worm wheel (13), and one end of the worm (14) extends out of the interior of the fixed cover (3) and is fixedly mounted on the adjusting disk (15).

5. A low-noise electric lawnmower according to claim 1, characterized in that: The inner walls of the frame (1) are provided with second slide grooves (16) on both sides. Second sliders (17) are slidably installed inside the second slide grooves (16). The second sliders (17) are fixedly connected to the motor (2).

6. A low-noise electric lawnmower according to claim 1, characterized in that: A hydraulic telescopic rod (18) is fixedly installed at the top of the frame (1), and the telescopic end of the hydraulic telescopic rod (18) is fixedly connected to the top of the motor (2).

7. A low-noise electric lawnmower according to claim 1, characterized in that: The drive assembly includes wheels (19) and a dual-axis motor (20). A support plate (21) is fixedly installed at each of the four corners at the bottom of the frame (1). Wheels (19) are rotatably installed on each support plate (21). The dual-axis motor (20) is fixedly installed on the opposite surface of the support plate (21) on one side. The output shafts on both sides of the dual-axis motor (20) are fixedly connected to the corresponding wheels (19).

8. A low-noise electric lawnmower according to claim 1, characterized in that: The frame (1) has storage slots (22) on both sides, and multiple storage racks (23) are fixedly installed inside the storage slots (22).

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