A leaf blower based on a lithium battery

Abstract

This utility model discloses a leaf blower based on a lithium battery, aiming to solve the technical problem that the handle structure of existing handheld lithium battery leaf blowers is generally fixed, which cannot be adjusted according to the user's height and body proportions. This forces users to operate in unnatural postures such as bending over or raising their arms, resulting in shoulder and neck muscle strain and reduced work efficiency. The invention includes a housing, an air nozzle, and a U-shaped handle. The housing includes an impeller assembly housing and a cylindrical drive motor assembly housing. The impeller assembly housing includes a first housing and a second housing. The drive motor assembly housing includes a third housing and a fourth housing. An annular dovetail groove is provided at the joint between the outer walls of the third housing and the outer walls of the fourth housing. The U-shaped handle includes a U-shaped body. The U-shaped body includes two connecting ends and a first dovetail slider. The first dovetail slider is slidably embedded in the dovetail groove. An arc-shaped connecting bridge is provided between the two connecting ends. The arc-shaped connecting bridge is threadedly fixed to the dovetail groove.

Description

Technical Field

[0001] This utility model relates to the field of leaf blowing machine technology, and in particular to a leaf blowing machine based on a lithium battery. Background Technology

[0002] A leaf blower is a gardening tool used to clean up outdoor litter such as fallen leaves, grass clippings, and debris. It uses a high-speed airflow to sweep and collect the scattered debris for easy disposal. Common leaf blowers can be categorized by their usage method (handheld or wheeled) and by their power source (electric or fuel-powered).

[0003] The handle structure of existing handheld lithium-ion leaf blowers generally adopts a fixed design. This rigid connection method has significant technical defects: the fixed handle cannot be adjusted according to the user's height and body proportions. When facing special working conditions such as clearing branches and leaves at heights or operating in narrow spaces, users of different body types are forced to adopt unnatural postures such as bending over or raising their arms. Maintaining abnormal postures for a long time can lead to shoulder and neck muscle strain, reduced work efficiency, and the risk of occupational musculoskeletal diseases. Utility Model Content

[0004] The purpose of this invention is to provide a leaf blower based on a lithium battery to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A lithium battery-based leaf blower includes a housing, an air nozzle detachably connected to the housing, and a U-shaped handle with an adjustable angle connected to the housing.

[0007] The housing includes an impeller assembly housing and a cylindrical drive motor assembly housing, which are fixedly connected; the air outlet of the impeller assembly housing is connected to an air nozzle.

[0008] The impeller assembly housing includes a first housing and a second housing, which are threadedly connected; the drive motor assembly housing includes a third housing and a fourth housing, which are threadedly connected; the second housing and the third housing are fixedly connected.

[0009] The outer wall of the third housing and the outer wall of the fourth housing are joined together with an annular dovetail groove; the U-shaped handle includes a U-shaped body; the U-shaped body includes two connecting ends that match the outer wall of the drive motor assembly housing and a first dovetail slider that matches the dovetail groove and is fixedly disposed on the end face of the connecting ends; the first dovetail slider is slidably embedded in the dovetail groove.

[0010] An arc-shaped connecting bridge matching the outer wall of the drive motor assembly housing is provided between the two connecting ends; the arc-shaped connecting bridge is fixedly connected to the dovetail groove thread.

[0011] When adjusting the U-shaped handle, simply loosen the threaded connection between the arc-shaped connecting bridge and the dovetail groove. By sliding the first dovetail slider embedded in the dovetail groove, the angle of the U-shaped handle can be infinitely adjusted. After adjusting the U-shaped handle to the desired position, tighten the threaded connection between the arc-shaped connecting bridge and the dovetail groove.

[0012] Preferably, the U-shaped handle includes a positioning bolt assembly and a through hole on the arc-shaped connecting block that matches the positioning bolt assembly; the positioning bolt assembly includes a second dovetail slider nut that matches the dovetail groove and a locking bolt that matches the second dovetail slider nut; during connection, the locking bolt passes through the through hole and is threadedly connected to the second dovetail slider nut in the dovetail groove, thereby achieving a stable and reliable connection of the U-shaped handle using the positioning bolt assembly.

[0013] Preferably, the locking bolt includes a screw and a wing head. Compared with traditional bolts, the wing head can improve the ease of adjustment and effectively improve the connection strength.

[0014] Preferably, the wing surface of the wing of the wing-shaped screw head is covered with an anti-slip layer to increase friction and facilitate the tightening of the locking bolt.

[0015] Preferably, the U-shaped body has a square cross-section; the four corners of the square cross-section are rounded for easy gripping.

[0016] Preferably, the radii of the two rounded corners at the top of the square cross-section are not less than twice the radii of the two rounded corners at the bottom, which better fits the ergonomics of the palm and improves grip comfort and reliability.

[0017] Compared with the prior art, the lithium battery-based leaf blower of this application has the following advantages:

[0018] 1. Enhanced Ergonomics: Through the sliding engagement of the dovetail groove and the first dovetail slider, combined with the threaded locking mechanism of the arc-shaped connecting bridge, the U-shaped handle achieves stepless angle adjustment. Users can freely adjust the grip angle according to their height and work environment, ensuring the operating posture conforms to the natural standing posture of the human body, effectively reducing the static load on the shoulder and neck muscles and lowering the risk of muscle strain. Especially when clearing branches and leaves from high places, the handle can be tilted upwards to avoid deltoid muscle fatigue caused by prolonged arm raising.

[0019] 2. Enhanced structural stability: The unique double dovetail locking system (the first dovetail slider and the second dovetail slider nut work together) enables the handle to form a three-point mechanical support at any angle. This structure has improved rigidity compared to the traditional single bolt fixing method, ensuring that the reaction force generated by high-speed airflow will not cause the handle to shift.

[0020] 3. Quick adjustment and reliable locking: The wing-shaped screw head, combined with the anti-slip layer design, allows for easy one-handed operation to adjust the tightness, making it quick and efficient.

[0021] 4. Modular design and improved ease of maintenance: The modular split-type casing design, combined with the detachable structure of the U-shaped handle, allows the entire machine to be completely disassembled into multiple basic modules, significantly improving the efficiency of cleaning and replacing internal components.

[0022] 5. Innovative Comfort Features: The U-shaped handle with its square cross-section and differentiated rounded corners precisely fits the anatomical curve of the palm. This design reduces palm pressure and enhances grip comfort and reliability.

[0023] The synergistic effect of the above-mentioned technologies gives this leaf blower significant advantages in garden operations: reduced fatigue, improved work efficiency, and suitability for widespread use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0025] Figure 2 This is a structural schematic diagram from another perspective of an embodiment of the present utility model;

[0026] Figure 3 This is an exploded view of the structure of an embodiment of the present utility model;

[0027] Figure 4 This is a schematic diagram of the U-shaped handle in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the dovetail groove structure in an embodiment of this utility model;

[0029] Figure 6 This is a schematic diagram illustrating the angle adjustment of the U-shaped handle in an embodiment of this utility model;

[0030] Figure 7 This is a schematic diagram of the embedded connection structure between the dovetail groove, the first dovetail slider, and the second dovetail slider nut in an embodiment of this utility model.

[0031] Figure 8 This is a schematic diagram of the U-shaped handle with a square cross-section and differentiated rounded corners in an embodiment of this utility model.

[0032] Reference numerals: 1. Housing; 11. Impeller assembly housing; 111. First housing; 112. Second housing; 12. Drive motor assembly housing; 121. Third housing; 122. Fourth housing; 13. Dovetail groove; 2. Air nozzle; 3. U-shaped handle; 31. U-shaped body; 311. Connecting end; 312. First dovetail slider; 313. Square cross-section; 32. Arc-shaped connecting bridge; 321. Through hole; 33. Positioning bolt assembly; 331. Second dovetail slider nut; 332. Locking bolt; 333. Screw; 334. Winged screw head. Detailed Implementation

[0033] The following detailed description illustrates the specific implementation method:

[0034] Example 1

[0035] like Figure 1-8 As shown in the figure, this embodiment demonstrates a leaf blower based on a lithium battery, including a housing 1, an air nozzle 2 detachably connected to the housing 1, and a U-shaped handle 3 angle-adjustable connected to the housing 1. The housing 1 is preferably made of high-strength and lightweight engineering plastic, such as ABS; the air nozzle 2 is preferably conical or cylindrical to concentrate airflow and enhance blowing force.

[0036] In this embodiment, the housing 1 includes an impeller assembly housing 11 and a cylindrical drive motor assembly housing 12, which are fixedly connected. The impeller assembly housing 11 houses an impeller, and compressed air is formed inside the impeller assembly housing 11 to form a high-speed airflow, which flows out from the air outlet. The air outlet of the impeller assembly housing 11 is connected to one end of the air nozzle 2. The drive motor assembly housing 12 houses a brushless motor that converts electrical energy into mechanical energy, drives the impeller to rotate at high speed to generate airflow, and is powered by a lithium battery pack.

[0037] In this embodiment, the impeller assembly housing 11 includes a first housing 111 and a second housing 112, which are threadedly connected; the drive motor assembly housing 12 includes a third housing 121 and a fourth housing 122, which are threadedly connected; the second housing 112 and the third housing 121 are fixedly connected. The overall modular split housing 1 design facilitates maintenance.

[0038] In this embodiment, an annular dovetail groove 13 is provided at the joint between the outer wall of the third housing 121 and the outer wall of the fourth housing 122; the U-shaped handle 3 includes a U-shaped body 31; the U-shaped body 31 includes two connecting ends 311 that match the outer wall of the drive motor assembly housing 12 and a first dovetail slider 312 that matches the dovetail groove 13 and is respectively fixedly disposed on the end face of the connecting ends 311; Figure 7 As shown, the first dovetail slider 312 is slidably embedded in the dovetail groove 13.

[0039] In this embodiment, an arc-shaped connecting bridge 32 matching the outer wall of the drive motor assembly housing 12 is provided between the two connecting ends 311; the arc-shaped connecting bridge 32 is threadedly fixed to the dovetail groove 13.

[0040] When adjusting the U-shaped handle 3, simply loosen the threaded connection between the arc-shaped connecting bridge 32 and the dovetail groove 13, and slide the first dovetail slider 312 embedded in the dovetail groove 13 to achieve stepless adjustment of the angle of the U-shaped handle 3. After adjusting the U-shaped handle 3 to the desired position, tighten the threaded connection between the arc-shaped connecting bridge 32 and the dovetail groove 13.

[0041] Example 2

[0042] like Figure 1-8 As shown, another embodiment, based on embodiment 1, illustrates a leaf blower based on a lithium battery. The U-shaped handle 3 includes a positioning bolt assembly 33 and a through hole 321 on the arc-shaped connecting block that matches the positioning bolt assembly 33. The positioning bolt assembly 33 includes a second dovetail slider nut 331 that matches the dovetail groove 13 and a locking bolt 332 that matches the second dovetail slider nut 331. Figure 7 As shown, the second dovetail slider nut 331 is slidably embedded in the dovetail groove 13. During connection, the locking bolt 332 passes through the through hole 321 and is threadedly connected to the second dovetail slider nut 331 in the dovetail groove 13, achieving a stable and reliable connection to the U-shaped handle 3 using the positioning bolt assembly 33. Specifically, the unique double dovetail locking system (the first dovetail slider 312 and the second dovetail slider nut 331 working together) provides three-point mechanical support for the handle at any angle. This structure offers increased rigidity compared to the traditional single-bolt fixing method, ensuring that the reaction force generated by high-speed airflow will not cause handle displacement.

[0043] To further explain, in a further possible implementation of this embodiment, such as Figure 1-4 As shown, the locking bolt 332 includes a screw 333 and a wing head 334. Compared with traditional bolts, the wing head 334 can improve the ease of adjustment and effectively improve the connection strength.

[0044] Furthermore, in these embodiments, the wing surface of the wing of the wing-shaped screw head 334 is covered with an anti-slip layer, such as a silicone layer, to increase friction and facilitate the tightening of the locking bolt 332.

[0045] Example 3

[0046] like Figure 1-8As shown, another embodiment, based on embodiment 1, demonstrates a leaf blower based on a lithium battery. The U-shaped body 31 includes a square cross-section 313; the four corners of the square cross-section 313 are rounded for easy gripping.

[0047] To further explain, in a further possible implementation of this embodiment, such as Figure 8 As shown, the radii of the two rounded corners at the top of the square cross-section 313 are not less than twice the radii of the two rounded corners at the bottom. The differentiated rounded corner treatment of the square cross-section 313 of the U-shaped handle 3 precisely fits the anatomical curve of the palm. This design reduces palm pressure and improves grip comfort and reliability.

[0048] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A leaf blower based on a lithium battery, characterized in that: Includes a housing, an air nozzle detachably connected to the housing, and a U-shaped handle with an adjustable angle connected to the housing; The housing includes an impeller assembly housing and a cylindrical drive motor assembly housing, which are fixedly connected; the air outlet of the impeller assembly housing is connected to an air nozzle. The impeller assembly housing includes a first housing and a second housing, which are threadedly connected; the drive motor assembly housing includes a third housing and a fourth housing, which are threadedly connected; the second housing and the third housing are fixedly connected. The third housing outer wall and the fourth housing outer wall are joined together with an annular dovetail groove; the U-shaped handle includes a U-shaped body; the U-shaped body includes two connecting ends that match the outer wall of the drive motor assembly housing and a first dovetail slider that matches the dovetail groove and is fixedly disposed on the end face of the connecting ends; the first dovetail slider is slidably embedded in the dovetail groove. An arc-shaped connecting bridge matching the outer wall of the drive motor assembly housing is provided between the two connecting ends; the arc-shaped connecting bridge is fixedly connected to the dovetail groove thread.

2. The leaf blower based on a lithium battery according to claim 1, characterized in that: The U-shaped handle includes a positioning bolt assembly and a through hole on the arc-shaped connecting block that matches the positioning bolt assembly; the positioning bolt assembly includes a second dovetail slider nut that matches the dovetail groove and a locking bolt that matches the second dovetail slider nut; when connected, the locking bolt passes through the through hole and is threadedly connected to the second dovetail slider nut in the dovetail groove.

3. A leaf blower based on a lithium battery according to claim 2, characterized in that: The locking bolt includes a screw and a wing head.

4. A leaf blower based on a lithium battery according to claim 3, characterized in that: The surface of the butterfly-shaped screw head is covered with an anti-slip layer.

5. A leaf blower based on a lithium battery according to claim 1, characterized in that: The U-shaped body has a square cross-section; the four corners of the square cross-section are rounded.

6. A leaf blower based on a lithium battery according to claim 5, characterized in that: The radii of the two rounded corners at the top of the square cross-section are not less than twice the radii of the two rounded corners at the bottom.

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