Convenient and fast replacement structure for grass trimming rope of handheld mower

Abstract

The utility model discloses a structure for conveniently replacing a grass trimming rope of a handheld mower, which belongs to the technical field of mowers and is characterized by comprising a connecting rod, a motor is fixedly connected to the front side of the connecting rod, a rotating plate is fixedly connected to the bottom of the motor, a limiting assembly is movably connected to the bottom of the rotating plate, and the limiting assembly is fixedly connected to the rotating plate. The problems that according to an existing handheld mower, the fixing effect of a grass trimming rope is poor, the grass trimming rope is greatly influenced by the material of the grass trimming rope through the meshing fixing mode of a movable rack and a fixed rack, and under high-frequency vibration generated by high-speed running of the mower, the grass trimming rope is extremely prone to being squeezed into the deep position of a rack gap, and the grass trimming rope is prone to being damaged are solved. The problems that due to the fact that an effective fixing structure is lacked, in the continuous mowing operation process, due to the fact that a grass mowing rope is not stably fixed, the position of the grass mowing rope is frequently changed, the long-time stable working state is difficult to maintain, the mowing effect is seriously affected, and the practicability of the device is reduced are solved.

Description

Technical Field

[0001] This utility model relates to the field of lawnmower technology, and in particular to a structure for easy replacement of the mowing rope on a handheld lawnmower. Background Technology

[0002] In the agricultural sector, lawnmowers are widely used for harvesting crops such as hay and grain stalks. Handheld lawnmowers, as practical small garden tools, are lightweight and portable. They are operated by hand and can flexibly reach into narrow corners such as the edge of the lawn and the corner of the wall. Some can also be equipped with different working heads to take on various tasks such as shrub trimming.

[0003] Most existing lawnmowers use a retaining ring to press and fix the mowing rope, making it easy to replace.

[0004] An existing patent (publication number: CN222674982U) discloses a lawnmower aluminum disc that facilitates the replacement of trimming ropes. By setting a fixing structure, the trimming rope is first installed between the movable rack and the fixed rack. The engagement between the two is used to fix the trimming rope. A pull-down spring drives the drive rod to rotate around the fixing block. This action will drive the movable rack away from the fixed rack, thereby removing the trimming rope from between the movable rack and the fixed rack, realizing the quick replacement of the trimming rope.

[0005] Existing patents offer solutions to the aforementioned problems, but their effectiveness in securing the mowing rope is poor. The method of securing the rope through the meshing of the movable and fixed racks is highly dependent on the material of the rope. Under the high-frequency vibrations generated by the high-speed operation of the lawnmower, the rope is easily squeezed deep into the gaps between the racks, causing the fixed position to shift. Due to the lack of an effective fixing structure, the rope frequently changes position during continuous mowing operations, making it difficult to maintain a stable working state for a long time. This seriously affects the mowing effect and reduces the practicality of the device.

[0006] To address this, a convenient replacement structure for the grass trimming rope on a handheld lawnmower is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a convenient replacement structure for the trimming rope of a handheld lawnmower. This solves the problem of poor rope fixation in existing handheld lawnmowers, where the rope is fixed by the meshing of a movable rack and a fixed rack. This method is greatly affected by the material of the trimming rope, and under the high-frequency vibration generated by the high-speed operation of the lawnmower, the rope is easily squeezed into the gap between the racks, causing the fixed position to shift. Due to the lack of an effective fixing structure, the trimming rope frequently changes position during continuous mowing operations, making it difficult to maintain a stable working state for a long time. This seriously affects the mowing effect and reduces the practicality of the device.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a convenient replacement structure for the grass trimming rope of a handheld lawnmower, including a connecting rod, a motor fixedly connected to the front side of the connecting rod, a rotating plate fixedly connected to the bottom of the motor, a limiting component movably connected to the bottom of the rotating plate, and a fixing component fixedly connected inside the limiting component, the limiting component including a storage disc, a U-shaped block fixedly connected to the front and rear sides of the storage disc, and a sliding rod fixedly connected to both sides of the inner wall of the U-shaped block;

[0009] The fixing component includes a fixed circular plate, a rotating block is rotatably connected inside the fixed circular plate, and positioning rods are fixedly connected to the front and rear sides of the top of the fixed circular plate. A threaded rod is fixedly connected to the top of the rotating block, and a rotating ring is fixedly connected to the other end of the threaded rod. A threaded sleeve is threadedly connected to the surface of the threaded rod, and a pressing plate is rotatably connected to the surface of the threaded sleeve.

[0010] Preferably, both slide rods are movably connected to sliders, and a movable plate is fixedly connected between the opposite sides of the two sliders. A spring is fixedly connected to the top of the slider, and the spring is sleeved on the surface of the slide rod.

[0011] Preferably, the top of the movable plate is provided with a slot, and the bottom of the movable plate is fixedly connected with a rubber block.

[0012] Preferably, the storage disk has connecting grooves on both the front and rear sides for use with the U-shaped block, and a wire harness plate is fixedly connected to the side of the connecting groove away from the U-shaped block.

[0013] Preferably, the fixed circular plate has a rotating groove inside for use with the rotating block, and the surface of the rotating block is in contact with the inner wall of the rotating groove. The top of the fixed circular plate has a rotating hole for use with the threaded rod, and the rotating hole is connected to the rotating groove.

[0014] Preferably, the pressing plate has a connecting hole for use with a threaded sleeve, and the surface of the threaded sleeve is in contact with the inner wall of the connecting hole. The pressing plate also has moving holes for use with a positioning rod on both the front and rear sides, and the surface of the positioning rod is in contact with the inner wall of the moving hole.

[0015] Preferably, both sides of the storage disc are fixedly connected to L-shaped fixing plates, and the L-shaped fixing plates are internally threaded with bolts.

[0016] Preferably, a battery is fixedly connected to the side of the connecting rod away from the motor, and the battery is electrically connected to the motor. A handle is fixedly connected to the top of the connecting rod, and the surface of the handle is provided with anti-slip texture.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. By setting a limiting component, this application can restrict the weeding rope to prevent it from shifting during rotation, thus ensuring the normal operation of weeding and improving the stability of the device.

[0019] 2. By setting a fixing component, this application can apply pressure evenly to the weeding rope, thereby firmly fixing the weeding rope and keeping it stable during movement. This achieves efficient weeding operations, greatly increases the efficiency and quality of weeding, and improves the practicality of the device. Attached Figure Description

[0020] Figure 1 The overall structural diagram of the handheld lawnmower with convenient replacement of the grass trimming rope of this utility model is shown.

[0021] Figure 2 Side view of the structure for easy replacement of the grass trimming rope in the handheld lawnmower of this utility model;

[0022] Figure 3 This is a schematic diagram showing the connection between the rotating plate, the limiting component, and the fixing component of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the limiting component of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the fixing component of this utility model.

[0025] In the diagram, 1. Connecting rod; 2. Motor; 3. Rotating plate; 4. Limiting component; 401. Storage disc; 402. U-shaped block; 403. Sliding rod; 404. Sliding block; 405. Moving plate; 406. Spring; 5. Fixing component; 501. Fixing plate; 502. Rotating block; 503. Positioning rod; 504. Threaded rod; 505. Threaded sleeve; 506. Pressing plate; 507. Rotating ring; 6. Slot; 7. Rubber block; 8. Connecting slot; 9. Cable management plate; 10. Rotating slot; 11. Rotating hole; 12. Connecting hole; 13. Moving hole; 14. L-shaped fixing plate; 15. Bolt; 16. Battery; 17. Handle. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5The present invention provides the following technical solution:

[0028] A handheld lawnmower with a convenient replacement structure for the mowing rope includes a connecting rod 1. A motor 2 is fixedly connected to the front side of the connecting rod 1, and a rotating plate 3 is fixedly connected to the bottom of the motor 2. A limiting component 4 is movably connected to the bottom of the rotating plate 3, and a fixing component 5 is fixedly connected inside the limiting component 4. The limiting component 4 includes a storage disc 401. U-shaped blocks 402 are fixedly connected to the front and rear sides of the storage disc 401, and sliding rods 403 are fixedly connected to both sides of the inner wall of the U-shaped blocks 402.

[0029] The fixing component 5 includes a fixing circular plate 501, a rotating block 502 is rotatably connected inside the fixing circular plate 501, and positioning rods 503 are fixedly connected to the front and rear sides of the top of the fixing circular plate 501. A threaded rod 504 is fixedly connected to the top of the rotating block 502, and a rotating ring 507 is fixedly connected to the other end of the threaded rod 504. A threaded sleeve 505 is threadedly connected to the surface of the threaded rod 504, and a pressing plate 506 is rotatably connected to the surface of the threaded sleeve 505.

[0030] In this embodiment: by rotating the rotating ring 507, the threaded rod 504 is driven to rotate smoothly under the constraint of the rotating block 502, which simultaneously drives the threaded sleeve 505 to rotate within the pressing plate 506, thereby driving the pressing plate 506 to move smoothly, so that the pressing plate 506 contacts the straw rope, which can evenly apply pressure to the straw rope, realize the fixing of straw rope of a specific specification, improve the convenience of using the fixing component 5, and under the action of the positioning rod 503, the movement of the pressing plate 506 can be restricted, so that it can apply pressure to the straw rope smoothly, and the straw rope can also be wound around the surface of the positioning rod 503, further increasing the fixing effect of the straw rope, so that the straw rope can move smoothly during the movement. Maintaining stability enables efficient weeding operations, improving both efficiency and quality. Then, by moving the moving plate 405, the operator causes the slider 404 to move smoothly under the constraint of the sliding rod 403, compressing the spring 406. This releases the fixing of the weeding rope by the limiting component 4, allowing the weeding rope to extend smoothly out of the storage disc 401. Simultaneously, the spring 406 generates a reaction force, causing the slider 404 and moving plate 405 to smoothly reset, fixing the weeding rope within the U-shaped block 402. This restraint of the weeding rope prevents it from shifting during rotation, ensuring the normal operation of the weeding process and improving the ease of use of the limiting component 4.

[0031] Specifically, such as Figure 4 As shown, sliders 404 are movably connected to the surfaces of both sliders 403, and a movable plate 405 is fixedly connected between the opposite sides of the two sliders 404. A spring 406 is fixedly connected to the top of the slider 404, and the spring 406 is sleeved on the surface of the slider 403.

[0032] Specifically, such as Figure 4 As shown, the top of the movable plate 405 is provided with a slot 6, and the bottom of the movable plate 405 is fixedly connected with a rubber block 7.

[0033] Specifically, such as Figure 4 As shown, the storage disk 401 has connection slots 8 on both the front and rear sides for use with the U-shaped block 402, and a cable tray 9 is fixedly connected to the side of the connection slot 8 away from the U-shaped block 402.

[0034] In this embodiment: the U-shaped block 402 and the connecting groove 8 work together to make the surface of the U-shaped block 402 contact the inner wall of the connecting groove 8, so that the U-shaped block 402 and the storage disc 401 are tightly connected. At the same time, under the action of the cable tie plate 9, the grass trimming rope can pass smoothly through the cable tie plate 9, which can constrain the grass trimming rope, thereby making the grass trimming rope connection more stable and improving the convenience of using the limiting component 4. Then, under the action of the slot 6, the operator can easily move the moving plate 405 to release the grass trimming rope from the fixed state of the limiting component 4, realizing the installation of the grass trimming rope. At the same time, under the action of the rubber block 7, the friction with the grass trimming rope can be increased, making the grass trimming rope connection more stable, and some of the impact force can be dispersed to ensure the stability of the grass trimming rope during the movement process, thus improving the practicality of the device.

[0035] Specifically, such as Figure 5 As shown, the fixed circular plate 501 has a rotating groove 10 inside that is used to cooperate with the rotating block 502, and the surface of the rotating block 502 is in contact with the inner wall of the rotating groove 10. The top of the fixed circular plate 501 has a rotating hole 11 that is used to cooperate with the threaded rod 504, and the rotating hole 11 is connected to the rotating groove 10.

[0036] Specifically, such as Figure 5 As shown, the inside of the pressing plate 506 is provided with a connecting hole 12 for use with the threaded sleeve 505, and the surface of the threaded sleeve 505 is in contact with the inner wall of the connecting hole 12. The front and rear sides of the inside of the pressing plate 506 are provided with moving holes 13 for use with the positioning rod 503, and the surface of the positioning rod 503 is in contact with the inner wall of the moving hole 13.

[0037] In this embodiment: the rotating block 502 and the rotating groove 10 work together to make the rotating block 502 rotate smoothly under the restriction of the rotating groove 10. At the same time, the rotating hole 11 communicates with the rotating groove 10, so that the threaded rod 504 rotates smoothly inside the rotating hole 11 under the constraint of the rotating block 502. This makes the rotation of the threaded rod 504 more stable and improves the stability of the fixing component 5. Then, the threaded sleeve 505 and the connecting hole 12 work together to make the threaded sleeve 505 rotate smoothly under the restriction of the connecting hole 12, which drives the pressing plate 506 to move smoothly. At the same time, the positioning rod 503 and the moving hole 13 work together to make the pressing plate 506 move smoothly under the restriction of the positioning rod 503. This allows the pressing plate 506 to move smoothly and apply pressure to the straw rope, thereby fixing the straw rope of a specific specification and improving the convenience of using the fixing component 5.

[0038] Specifically, such as Figure 3 , Figure 4 As shown, L-shaped fixing plates 14 are fixedly connected to both sides of the storage disk 401, and bolts 15 are threadedly connected to the inside of the L-shaped fixing plates 14.

[0039] Specifically, such as Figure 1 , Figure 2 As shown, a battery 16 is fixedly connected to the side of the connecting rod 1 away from the motor 2, and the battery 16 is electrically connected to the motor 2. A handle 17 is fixedly connected to the top of the connecting rod 1, and the surface of the handle 17 is provided with anti-slip texture.

[0040] In this embodiment: the battery 16 provides real-time and precise power to the motor 2, enabling the motor 2 to drive the storage disc 401 and the weeding rope to rotate smoothly. Simultaneously, the handle 17 allows the operator to move the device smoothly and flexibly adjust the position of the weeding rope, achieving comprehensive and precise weeding operations and improving the efficiency of garden weeding. Furthermore, the L-shaped fixing plate 14 and bolt 15 work together, with the bolt 15 threaded through the L-shaped fixing plate 14 and the rotating plate 3, tightly connecting the limiting component 4 and the rotating plate 3. This ensures the weeding rope remains stable during movement, achieving efficient weeding operations and improving both efficiency and quality.

[0041] Working Principle: When replacing the hay trimming rope, the operator first loosens bolt 15 to remove the storage disc 401. Then, the operator rotates the rotating ring 507, causing the threaded rod 504 to rotate smoothly under the constraint of the rotating block 502. Simultaneously, the threaded sleeve 505 rotates within the pressing plate 506, causing the pressing plate 506 to move smoothly. This releases the fixing component 5 from the hay trimming rope. Simultaneously, moving the moving plate 405 causes the slider 404 to move smoothly under the constraint of the sliding rod 403, compressing the spring 406. This releases the constraint component 4 from the hay trimming rope, allowing the old hay trimming rope to be pulled out, completing the disassembly operation. Then, the new hay trimming rope is taken out and wound around the surface of the positioning rod 503. Simultaneously, the rotating ring 507 is rotated in the opposite direction, causing the pressing plate 506 to move smoothly downward under the constraint of the positioning rod 503. This allows the pressing plate 506 to contact the hay trimming rope, applying pressure evenly to the rope and achieving the desired effect. The grass trimming rope is fixed, and the moving plate 405 is moved again to release the fixed state of the limiting component 4, allowing the grass trimming rope to smoothly extend through the cable tie plate 9 to the outside of the storage disc 401. Then, the external force applied to the moving plate 405 is removed, and under the action of the spring 406, it generates a reaction force, which drives the slider 404 and the moving plate 405 to smoothly return to their original positions, fixing the grass trimming rope in the U-shaped block 402, thereby constraining the grass trimming rope and completing the replacement of the grass trimming rope. This prevents the grass trimming rope from shifting during rotation, ensuring the normal operation of weeding. After the grass trimming rope is replaced, the storage disc 401 is installed back in its original position and the bolts 15 are tightened. Finally, when using the lawnmower, the operator can hold the handle 17 to flexibly adjust the position of the grass trimming rope. At the same time, with the help of the battery 16, power can be supplied to the motor 2 in real time and accurately, so that the motor 2 can drive the storage disc 401 and the grass trimming rope to rotate smoothly, thereby realizing a comprehensive and precise weeding operation.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A handheld lawnmower with a convenient replacement rope structure, comprising a connecting rod (1), characterized in that: A motor (2) is fixedly connected to the front side of the connecting rod (1), and a rotating plate (3) is fixedly connected to the bottom of the motor (2). A limiting component (4) is movably connected to the bottom of the rotating plate (3), and a fixing component (5) is fixedly connected inside the limiting component (4). The limiting component (4) includes a storage disk (401). A U-shaped block (402) is fixedly connected to the front and rear sides inside the storage disk (401), and a sliding rod (403) is fixedly connected to both sides of the inner wall of the U-shaped block (402). The fixing component (5) includes a fixing circular plate (501), a rotating block (502) is rotatably connected inside the fixing circular plate (501), and a positioning rod (503) is fixedly connected to the front and rear sides of the top of the fixing circular plate (501). A threaded rod (504) is fixedly connected to the top of the rotating block (502), and a rotating ring (507) is fixedly connected to the other end of the threaded rod (504). A threaded sleeve (505) is threadedly connected to the surface of the threaded rod (504), and a pressing plate (506) is rotatably connected to the surface of the threaded sleeve (505).

2. The handheld lawnmower rope replacement structure according to claim 1, characterized in that: Both slide rods (403) are movably connected to sliders (404), and a movable plate (405) is fixedly connected between the opposite sides of the two sliders (404). A spring (406) is fixedly connected to the top of the slider (404), and the spring (406) is sleeved on the surface of the slide rod (403).

3. The handheld lawnmower rope replacement structure according to claim 2, characterized in that: The top of the movable plate (405) is provided with a slot (6), and the bottom of the movable plate (405) is fixedly connected with a rubber block (7).

4. The handheld lawnmower rope replacement structure according to claim 1, characterized in that: The storage disk (401) has a connecting groove (8) on both the front and rear sides for use with the U-shaped block (402), and a wire harness plate (9) is fixedly connected to the side of the connecting groove (8) away from the U-shaped block (402).

5. The handheld lawnmower rope replacement structure according to claim 1, characterized in that: The fixed circular plate (501) has a rotating groove (10) inside for use with the rotating block (502), and the surface of the rotating block (502) is in contact with the inner wall of the rotating groove (10). The top of the fixed circular plate (501) has a rotating hole (11) for use with the threaded rod (504), and the rotating hole (11) is connected to the rotating groove (10).

6. The handheld lawnmower rope replacement structure according to claim 1, characterized in that: The pressing plate (506) has a connecting hole (12) inside for use with a threaded sleeve (505), and the surface of the threaded sleeve (505) is in contact with the inner wall of the connecting hole (12). The pressing plate (506) has moving holes (13) inside the front and rear sides for use with a positioning rod (503), and the surface of the positioning rod (503) is in contact with the inner wall of the moving hole (13).

7. The handheld lawnmower rope replacement structure according to claim 1, characterized in that: Both sides of the storage disk (401) are fixedly connected to L-shaped fixing plates (14), and bolts (15) are threaded inside the L-shaped fixing plates (14).

8. The handheld lawnmower rope replacement structure according to claim 1, characterized in that: A battery (16) is fixedly connected to the side of the connecting rod (1) away from the motor (2), and the battery (16) is electrically connected to the motor (2). A handle (17) is fixedly connected to the top of the connecting rod (1), and the surface of the handle (17) is provided with anti-slip texture.

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