Efficient handheld grass trimmer

Abstract

The utility model discloses an efficient handheld grass trimmer which comprises a folding rod, a mounting plate is fixedly arranged at one end of the folding rod, a motor is arranged on the upper end face of the mounting plate, rotating shafts are rotationally arranged on the two sides of the output end of the motor and located on the lower end face of the mounting plate, and straight gears are arranged at the output ends of the rotating shafts and the motor. The two sets of straight gears are installed in a meshed mode, first bevel gears are arranged at the lower ends of the rotating shafts correspondingly, vertical plates are fixedly arranged on the lower end face of the mounting plate and located on the two sides correspondingly, connecting shafts are rotationally arranged on the vertical plates correspondingly, second bevel gears are arranged on the connecting shafts correspondingly, and the first bevel gears and the second bevel gears are installed in a meshed mode. Therefore, in the using process, the output end of the motor can drive the straight gear and the rotating shaft to rotate, at the moment, the first bevel gear on the rotating shaft can drive the connecting shaft and the first blade to rotate through the second bevel gear, wound weeds are cut off, and the situation that the grass mowing efficiency is affected due to the clamping phenomenon is prevented.

Description

Technical Field

[0001] This utility model relates to the field of lawn mower technology, and more specifically, to a high-efficiency handheld lawn mower. Background Technology

[0002] Handheld lawn mowers, also known as handheld lawn trimmers or handheld lawn cutters, are portable gardening tools mainly used for trimming lawn edges, small lawns, or areas that are difficult to reach with large lawn mowers. They can also be used to cut weeds in gardens, pastures, and other places. Generally, handheld lawn mowers can be divided into hydraulic, electric, and manual types according to their power source; and into front-powered and rear-powered types according to their power head structure. The main components are the cutting head, power source, and handle.

[0003] However, existing handheld lawn mowers rely on a rotating shaft to drive the blades, which makes it easy for weeds to get tangled on the outer surface of the shaft, causing the lawn mower to jam and affecting its mowing efficiency.

[0004] Furthermore, existing handheld lawn mowers are not convenient to carry because of their long handle length, which affects their ease of use. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the problems existing in the prior art, this utility model provides a high-efficiency handheld grass cutter to solve the technical problem mentioned in the background art, in which existing handheld grass cutters rely on a rotating shaft to drive the blades to rotate, so that weeds easily get tangled on the outer surface of the rotating shaft during use, which leads to the grass cutter getting stuck.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency handheld lawn mower, comprising a folding rod, a mounting plate fixedly mounted at one end of the folding rod, a motor mounted on the upper surface of the mounting plate, rotating shafts rotatably mounted on both sides of the motor output end and on the lower surface of the mounting plate, spur gears mounted on both the rotating shafts and the motor output end, the two sets of spur gears meshing together, a first bevel gear mounted on the lower end of each rotating shaft, upright plates fixedly mounted on both sides of the lower surface of the mounting plate, a connecting shaft rotatably mounted on each upright plate, a second bevel gear mounted on each connecting shaft, the first bevel gear and the second bevel gear meshing together, a first blade mounted on one end of each connecting shaft, a second blade mounted between the two first blades, the second blade being connected to the motor output end, a handheld handle rotatably mounted on the other end of the folding rod, a storage slot being formed at the bottom of the handheld handle, the folding rod being able to enter the storage slot.

[0009] The present invention is further provided in that the outer wall of the handheld rod is provided with grooves on both sides, and a pin is slidably provided inside the groove. One end of the pin is provided with a pull block, and a connecting spring is fixedly provided on the inner wall of the pull block. The other end of the connecting spring is fixedly connected to the inner wall of the groove, which facilitates the folding and storage of the handheld rod.

[0010] The present invention is further provided that slots are provided on the outer wall of the folding rod on both sides, and one end of the pin is located inside the slot, which facilitates the fixing of the hand handle and the folding rod.

[0011] The present invention is further configured such that the output end of the motor is fixedly provided with a mounting sleeve, and both the mounting sleeve and the connecting shaft are provided with mounting grooves. One end of the first blade and the second blade are fixedly provided with mounting rods, and the mounting rods are located inside the mounting grooves. The mounting sleeve, the connecting shaft and the mounting rods are all provided with through holes, and the through holes are all provided with slidable limit pins to facilitate the installation of the first blade and the second blade.

[0012] The present invention is further provided with limiting rings on the outer walls of the mounting sleeve and the connecting shaft. The limiting rings are threadedly connected to the mounting sleeve and the connecting shaft, and the limiting pins are in contact with the inner walls of the limiting rings, so as to cover the limiting pins and prevent them from slipping out.

[0013] The present invention is further provided with a pull ring fixed on the outer wall of the hand handle at one end, so as to facilitate the taking out of the device.

[0014] The present invention is further provided with a handrail fixed on the outer wall of the hand handle at the other end, so as to facilitate shaking the lower end of the device.

[0015] The present invention is further configured such that positioning blocks are provided on the outer wall of the mounting rod on both sides, and positioning grooves are correspondingly provided on the inner wall of the mounting groove. The positioning blocks are located inside the positioning grooves, which facilitates the positioning and installation of the mounting rod.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a high-efficiency handheld lawn mower with the following advantages:

[0018] 1. By setting up a motor, spur gear, connecting shaft and first blade, the output end of the motor will drive the spur gear and rotating shaft to rotate during use. At this time, the first bevel gear on the rotating shaft will drive the connecting shaft and the first blade to rotate through the second bevel gear, so as to cut the tangled weeds and prevent jamming, which would affect the weed cutting efficiency.

[0019] 2. By setting up a storage slot, a pin, and a connecting spring, when the device needs to be carried, the folding rod can be rotated to enter the storage slot at the lower end of the hand handle. Then, the pull block can be pulled to make one end of the pin enter the slot on the folding rod to fix the folding rod and the hand handle, thereby reducing the space occupied by the device and making it easier to carry later.

[0020] 3. By setting up an installation sleeve, installation rod, limit pin, and limit ring, the user can disassemble it by rotating the limit ring. At this time, the limit pin can be taken out from the inside of the through hole, and then the installation rod can be taken out from the inside of the installation groove to disassemble the first blade and the second blade for easy replacement. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a high-efficiency handheld lawn mower in its unused state.

[0022] Figure 2 This is a schematic diagram showing the mounting positions of the motor, spur gear, first blade, and second blade on the mounting plate.

[0023] Figure 3 This is a schematic diagram showing the installation positions of the rotating shaft, spur gear, first bevel gear, vertical plate, connecting shaft, second bevel gear, first blade, and second blade on the mounting plate.

[0024] Figure 4 Exploded view of the installation of the connecting shaft, the first blade, the mounting rod, and the limit pin;

[0025] Figure 5 Exploded view of the installation of the hand lever and pin.

[0026] In the diagram: 1. Folding rod; 2. Mounting plate; 3. Motor; 4. Rotating shaft; 5. Spur gear; 6. First bevel gear; 7. Vertical plate; 8. Connecting shaft; 9. Second bevel gear; 10. First blade; 11. Second blade; 12. Hand handle; 13. Storage slot; 14. Pin; 15. Pull block; 16. Connecting spring; 17. Slot; 18. Mounting sleeve; 19. Mounting groove; 20. Mounting rod; 21. Through hole; 22. Limiting pin; 23. Limiting ring; 24. Pull ring; 25. Handrail; 26. Positioning block; 27. Positioning groove. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] 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.

[0030] Please see Figure 1-5 A high-efficiency handheld lawn mower includes a folding rod 1. A mounting plate 2 is fixedly mounted on one end of the folding rod 1. A motor 3 is mounted on the upper surface of the mounting plate 2. Rotating shafts 4 are rotatably mounted on both sides of the output end of the motor 3 and on the lower surface of the mounting plate 2. Spur gears 5 are mounted on both the rotating shafts 4 and the output end of the motor 3, and the two sets of spur gears 5 mesh together. A first bevel gear 6 is mounted on the lower end of the rotating shafts 4. Vertical plates 7 are fixedly mounted on both sides of the lower surface of the mounting plate 2. A connecting shaft 8 is rotatably mounted on each vertical plate 7. A second bevel gear 9 is mounted on each connecting shaft 8, and the first bevel gear 6 and the second bevel gear 9 mesh together. A first blade 10 is mounted on one end of each connecting shaft 8, and a second blade 11 is positioned between the two first blades 10. The second blade 11 is connected to the output end of the motor 3. A handheld handle 12 is rotatably mounted on the other end of the folding rod 1. A storage slot 13 is opened at the bottom of the handheld handle 12, allowing the folding rod 1 to enter the storage slot 13.

[0031] In this embodiment, grooves are provided on the outer wall of the handheld rod 12 on both sides, and pins 14 are slidably provided inside the grooves. One end of each pin 14 is provided with a pull block 15, and a connecting spring 16 is fixedly provided on the inner wall of each pull block 15. The other end of each connecting spring 16 is fixedly connected to the inner wall of the groove. Slots 17 are provided on the outer wall of the folding rod 1 on both sides, and one end of the pin 14 is located inside the slot 17.

[0032] More specifically, during use, the output of motor 3 drives spur gear 5 and rotating shaft 4 to rotate. At this time, the first bevel gear 6 on rotating shaft 4 drives connecting shaft 8 and first blade 10 to rotate through the second bevel gear 9, so as to cut the tangled weeds and prevent jamming. When the device needs to be carried, the folding rod 1 can be rotated to enter the storage slot 13 at the lower end of the hand handle 12. Then, the pull block 15 is pulled to let one end of the pin 14 enter the slot 17 on the folding rod 1 to fix the folding rod 1 and the hand handle 12, thereby reducing the space occupied by the device and facilitating subsequent carrying.

[0033] Please see Figures 2-4 As an embodiment for disassembling and assembling the first blade 9 and the second blade 10: the output end of the motor 3 is fixedly provided with a mounting sleeve 18, and mounting slots 19 are provided on both the mounting sleeve 18 and the connecting shaft 8. One end of the first blade 10 and the second blade 11 is fixedly provided with a mounting rod 20, which is located inside the mounting slot 19. Through holes 21 are provided on the mounting sleeve 18, the connecting shaft 8 and the mounting rod 20. Limiting pins 22 are slidably provided inside the through holes 21. Limiting rings 23 are provided on the outer walls of the mounting sleeve 18 and the connecting shaft 8. The limiting rings 23 are threadedly connected to the mounting sleeve 18 and the connecting shaft 8. The limiting pins 22 are in contact with the inner walls of the limiting rings 23. Positioning blocks 26 are provided on both sides of the outer wall of the mounting rod 20. Positioning slots 27 are correspondingly provided on the inner walls of the mounting slots 19. The positioning blocks 26 are located inside the positioning slots 27.

[0034] Specifically, the user can disassemble the limiting ring 23 by rotating it. At this time, the limiting pin 22 can be removed from the inside of the through hole 21, and then the mounting rod 20 can be removed from the inside of the mounting groove 19 to disassemble the first blade 10 and the second blade 11 for easy replacement.

[0035] Please refer to Figure 1 As a further embodiment for picking up and shaking the device: a pull ring 24 is fixedly provided on the outer wall of the hand handle 12 at one end, and a handrail 25 is fixedly provided on the outer wall of the hand handle 12 at the other end.

[0036] Specifically, users can pick up the device using the pull ring 24 and shake it using the handle 25 for easy use.

[0037] In summary, when using the entire device: the motor 3 can be turned on to rotate the second blade 10. The second blade 10 is then brought into contact with the lawn to be trimmed, thus achieving the effect of mowing. During use, the output of the motor 3 drives the spur gear 5 and the rotating shaft 4 to rotate. At this time, the first bevel gear 6 on the rotating shaft 4, through the second bevel gear 9, drives the connecting shaft 8 and the first blade 10 to rotate, cutting off tangled weeds and preventing jamming. When the device needs to be carried, it can be moved by rotating the folding lever 1. Insert the pin 14 into the storage slot 13 at the lower end of the handheld lever 12, and then pull the pull block 15 to insert one end of the pin 14 into the slot 17 on the folding lever 1 to fix the folding lever 1 and the handheld lever 12, thereby reducing the space occupied by the device and making it easier to carry later. The user can also disassemble it by rotating the limiting ring 23. At this time, the limiting pin 22 can be taken out from the inside of the through hole 21, and then the mounting rod 20 can be taken out from the inside of the mounting slot 19 to disassemble the first blade 10 and the second blade 11 for easy replacement.

[0038] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency handheld lawn mower, comprising a folding pole (1), characterized in that: One end of the folding rod (1) is fixedly provided with a mounting plate (2). A motor (3) is provided on the upper surface of the mounting plate (2). Rotating shafts (4) are rotatably provided on both sides of the output end of the motor (3) and on the lower surface of the mounting plate (2). Spur gears (5) are provided on both the rotating shafts (4) and the output end of the motor (3). The two sets of spur gears (5) are meshed together. A first bevel gear (6) is provided on the lower end of the rotating shafts (4). Vertical plates (7) are fixedly provided on both sides of the lower surface of the mounting plate (2). Connecting shafts (7) are rotatably provided on the vertical plates (7). 8) Each of the connecting shafts (8) is provided with a second bevel gear (9), and the first bevel gear (6) and the second bevel gear (9) are meshed together. One end of each of the connecting shafts (8) is provided with a first blade (10), and a second blade (11) is provided in the middle of the two first blades (10). The second blade (11) is connected to the output end of the motor (3). The other end of the folding rod (1) is provided with a hand handle (12), and a storage slot (13) is provided at the bottom of the hand handle (12). The folding rod (1) can enter the interior of the storage slot (13).

2. The high-efficiency handheld lawn mower according to claim 1, characterized in that: The handheld lever (12) has grooves on its outer wall and on both sides. Each groove has a sliding pin (14) inside it. Each pin (14) has a pull block (15) at one end. Each pull block (15) has a connecting spring (16) fixedly installed on its inner wall. The other end of each connecting spring (16) is fixedly connected to the inner wall of the groove.

3. The high-efficiency handheld lawn mower according to claim 2, characterized in that: The folding rod (1) has slots (17) on its outer wall and on both sides, and one end of the pin (14) is located inside the slot (17).

4. The high-efficiency handheld lawn mower according to claim 1, characterized in that: The output end of the motor (3) is fixedly provided with a mounting sleeve (18). The mounting sleeve (18) and the connecting shaft (8) are both provided with mounting grooves (19). One end of the first blade (10) and the second blade (11) is fixedly provided with a mounting rod (20). The mounting rods (20) are all located inside the mounting grooves (19). The mounting sleeve (18), the connecting shaft (8) and the mounting rods (20) are all provided with through holes (21). The through holes (21) are all slidably provided with limit pins (22).

5. A high-efficiency handheld lawn mower according to claim 4, characterized in that: The mounting sleeve (18) and the connecting shaft (8) are both provided with limiting rings (23), and the limiting rings (23) are threadedly connected to the mounting sleeve (18) and the connecting shaft (8), and the limiting pins (22) are in contact with the inner wall of the limiting rings (23).

6. The high-efficiency handheld lawn mower according to claim 1, characterized in that: A pull ring (24) is fixedly provided on the outer wall of the handheld lever (12) at one end.

7. The high-efficiency handheld lawn mower according to claim 1, characterized in that: A handrail (25) is fixedly provided on the outer wall of the hand handle (12) at the other end.

8. A high-efficiency handheld lawn mower according to claim 4, characterized in that: Positioning blocks (26) are provided on the outer wall of the mounting rod (20) and on both sides. Positioning grooves (27) are provided on the inner wall of the mounting groove (19). The positioning blocks (26) are located inside the positioning grooves (27).

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