Rotating structure of grass trimmer handle

Abstract

The utility model belongs to the technical field of gardening tools, and particularly relates to a rotating structure of a grass trimmer handle, which comprises a connecting rod, a grass trimming head arranged at the bottom of the connecting rod, an auxiliary handle arranged on the connecting rod and a main handle rotationally arranged at the top of the connecting rod, a connecting part is arranged on the connecting rod, and a mounting part is arranged at the top end of the connecting part. The main handle is provided with a rotating part rotationally connected with the mounting part, the main handle can rotate relative to the connecting part, the structure is simple, and the main handle on the grass trimmer can rotate, so that a user can change the posture of holding the grass trimmer; the situation that a user keeps a holding posture for operation for a long time is avoided, wrist ache can be prevented, and therefore the working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of garden tool technology, and specifically refers to a rotating structure for a lawn mower handle. Background Technology

[0002] Green vegetation is an essential environmental element for humankind, and the awareness of greening is increasingly gaining popularity. Whether it's golf courses, football fields, estates, villa courtyards, or ordinary residential areas, green lawns are ubiquitous, bringing vitality and life to people's lives. However, without human maintenance, these lawns become uneven and messy. Lawn trimmers, as a gardening tool for lawn maintenance, are gaining popularity. Users typically hold the main handle and auxiliary handle of the lawn trimmer with both hands. However, the main handle of most lawn trimmers on the market cannot be rotated to adjust the angle between the trimmer and the user, forcing users to maintain only one grip posture. Maintaining this posture for extended periods can cause wrist pain, affecting normal work and reducing efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a simple structure in which the main handle of the lawn mower can rotate, allowing the user to change the posture of holding the lawn mower, avoiding the situation where the user maintains one grip posture for a long time, preventing wrist pain, and thus increasing work efficiency.

[0004] The purpose of this utility model is achieved as follows:

[0005] A rotating structure for a lawn mower handle includes a connecting rod, a mowing head disposed at the bottom of the connecting rod, a secondary handle disposed on the connecting rod, and a main handle rotatably disposed at the top of the connecting rod. The connecting rod has a connecting part, and the top end of the connecting part has a mounting part. The main handle has a rotating part rotatably connected to the mounting part, and the main handle can rotate relative to the connecting part.

[0006] Furthermore, the mounting part has a mounting cavity, the rotating part is disposed in the mounting cavity, the rotating part has a rotating tooth groove, and the side wall of the mounting cavity has a snap-fit ​​tooth groove. The snap-fit ​​tooth groove and the rotating tooth groove are positioned opposite each other. The connecting part has a pressing member, and the pressing member has a retaining tooth portion around it. The pressing member is located in the snap-fit ​​tooth groove and the rotating tooth groove, and the retaining tooth portion on the pressing member engages with the snap-fit ​​tooth groove and the rotating tooth groove. At this time, the mounting part and the rotating part are locked. Pressing the pressing member can drive the retaining tooth portion to move inward, so that the retaining tooth portion disengages from the rotating tooth groove. At this time, the mounting part and the rotating part are released from the locked state, and the main handle can rotate relative to the connecting part.

[0007] Furthermore, a limiting post is provided in the rotating tooth groove, and a mounting post is provided on the inner side of the pressing member. A return spring is provided between the mounting post and the limiting post, and the two ends of the return spring are respectively sleeved on the limiting post and the mounting post.

[0008] Furthermore, the inner wall of the snap-fit ​​groove is provided with a limiting boss, and the snap-fit ​​part includes a plurality of snap-fit ​​blocks arranged around the pressing member, and each snap-fit ​​block can abut against the limiting boss.

[0009] Furthermore, the secondary handle is rotatably mounted on the connecting part. The secondary handle is provided with a first connecting plate and a second connecting plate. The connecting part is provided with a rotating block, which is located between the first connecting plate and the second connecting plate. The rotating block is provided with a through hole. Both the first and second connecting plates are provided with connecting holes. A nut is fixedly installed in the connecting hole of the first connecting plate. The rotating block is provided with a threaded rod. One end of the threaded rod passes through the connecting hole and the through hole of the first connecting plate and is threadedly connected to the nut. The other end of the threaded rod is provided with a knob. The inner side of the knob can abut against the second connecting plate.

[0010] Furthermore, both sides of the rotating block are provided with limiting grooves, and several limiting blocks are provided in the inner ring of the limiting grooves. Both sides of the limiting blocks are provided with snap-fit ​​inclined surfaces. The inner sides of the first connecting plate and the second connecting plate are provided with several snap-fit ​​blocks. Both sides of the snap-fit ​​blocks are provided with rotating inclined surfaces that are adapted to the snap-fit ​​inclined surfaces. The snap-fit ​​blocks snap into the limiting blocks, and at this time the rotating inclined surfaces are in contact with the snap-fit ​​inclined surfaces.

[0011] Furthermore, the outer side of the second connecting plate is provided with an abutment groove, the connecting hole is provided at the bottom of the abutment groove, the inner side of the knob is provided with an abutment part, the abutment part is located in the abutment groove and abuts against the second connecting plate, and both the main handle and the auxiliary handle are provided with gripping space.

[0012] Furthermore, the trimming head includes a mounting base, blades mounted on the mounting base, and a power assembly within the mounting base for controlling the rotation of the blades. The power assembly includes a drive motor, a power spindle, and a transmission assembly. The transmission assembly is located between the drive motor and the power spindle. After the drive motor operates, it can drive the power spindle to rotate via the transmission assembly. The bottom of the mounting base has an extension portion with a rotating cavity. The power spindle passes through the rotating cavity and protrudes outside the mounting base. An upper clamping plate is located within the rotating cavity, and the upper clamping plate is sleeved on and fixedly connected to the power spindle. The bottom of the upper clamping plate has an extension boss, and the blades are sleeved on the extension boss and located below the upper clamping plate. The power spindle is also fitted with a lower clamping plate, which is located below the blade. Both ends of the blade can abut against the upper and lower clamping plates respectively. The bottom of the power spindle is provided with a threaded rod, and a clamping assembly is threadedly connected to the threaded rod. The clamping assembly can abut against the bottom surface of the lower clamping plate. The side wall of the extension is provided with a snap-fit ​​notch that communicates with the rotating cavity. The bottom of the mounting base is also provided with a snap-fit ​​platform, which is located on one side of the snap-fit ​​notch. A fixing assembly is slidably mounted on the snap-fit ​​platform. The upper clamping plate is provided with a fixing hole. When the fixing hole aligns with the snap-fit ​​notch, pushing the fixing assembly will allow one end of the fixing assembly to enter the fixing hole, thereby restricting the rotation of the upper clamping plate.

[0013] Furthermore, the fixing component includes a fixing rod, a limiting piece and a pushing piece disposed on the fixing rod, and a pushing spring sleeved on the fixing rod. The locking platform has a sliding hole, the fixing rod is slidably disposed in the sliding hole, the limiting piece can abut against the inner side of the locking platform, and the two ends of the pushing spring abut against the outer side of the locking platform and the pushing piece, respectively.

[0014] Furthermore, the transmission assembly includes a driving gear and a driven gear meshing with the driving gear. The driven gear is mounted on the power main shaft. The drive motor has a motor shaft, and the driving gear is mounted on the motor shaft. The clamping assembly includes a chassis and a nut. The chassis has a mounting hole, and the threaded rod can be mounted in the mounting hole. At this time, the chassis abuts against the lower clamping plate, and the nut is threadedly connected to the threaded rod. The nut is located below the chassis and abuts against the chassis.

[0015] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0016] This utility model belongs to the field of garden tool technology, specifically referring to a rotating structure for a lawnmower handle. It includes a connecting rod, a lawnmower head located at the bottom of the connecting rod, a secondary handle located on the connecting rod, and a main handle rotatably located at the top of the connecting rod. The lawnmower head is similar to those found on commercially available lawnmowers; when in operation, it rotates through the blades. Users simply hold the secondary handle with one hand and the main handle with the other to lift the lawnmower off the ground. Because the connecting rod has a connecting part with a mounting part at its top, and the rotating part on the main handle is rotatably connected to the mounting part at the top of the connecting part, the main handle can rotate relative to the connecting part. When the user rotates the main handle, the angle between the main handle and the connecting rod changes, thus altering the user's grip on the lawnmower and changing their wrist grip. This prevents users from maintaining a single grip posture for extended periods, avoiding wrist pain that could affect normal work and reduce efficiency. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 This is an exploded view of the connecting rod and the grass trimmer of this utility model.

[0019] Figure 3 This is an exploded view of the connecting part and the main handle of this utility model.

[0020] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0021] Figure 5 This is a perspective view of the pressing component of this utility model.

[0022] Figure 6 This is a schematic diagram of the structure of the first connecting plate, the second connecting plate, and the rotating block of this utility model.

[0023] Figure 7 This is an exploded view of the auxiliary handle and connecting part of this utility model.

[0024] Figure 8 yes Figure 7 A magnified view of a section at point B in the middle.

[0025] Figure 9 This is an exploded view of the auxiliary handle and connecting part of this utility model.

[0026] Figure 10 This is a three-dimensional view of the grass trimming head of this utility model.

[0027] Figure 11 yes Figure 9 A magnified view of a section at point C.

[0028] Figure 12 This is a cross-sectional view of the grass trimming head of this utility model.

[0029] Figure 13 yes Figure 12 A magnified view of a section at point D.

[0030] Figure 14 This is a schematic diagram of the structure of the grass trimming head of this utility model.

[0031] Figure 15 This is a structural schematic diagram of the fixing component and the upper pressure plate of this utility model.

[0032] Figure 16 This is a schematic diagram of the internal structure of the mounting base of this utility model.

[0033] Figure 17 This is a schematic diagram of the structure of the card-connecting platform of this utility model.

[0034] Figure 18 This is a perspective view of the fixing component of this utility model.

[0035] Figure 19 This is a schematic diagram of the structure of the driving gear and the driven gear of this utility model.

[0036] Figure 20 This is an exploded view of the upper pressure plate and the power spindle of this utility model.

[0037] The labels in the diagram represent the following meanings: 1-Connecting rod; 2-Grass trimmer head; 3-Secondary handle; 4-Main handle; 5-Connecting part; 6-Mounting part; 7-Rotating part; 8-Mounting cavity; 9-Rotating tooth groove; 10-Snapping tooth groove; 11-Pressing part; 12-Snapping tooth part; 13-Limiting post; 14-Mounting post; 15-Return spring; 16-Fixing component; 17-Limiting boss; 18-Snapping tooth block; 19-First connecting plate; 20-Second connecting plate; 21-Rotating block; 22-Through hole; 23-... - Connecting hole; 24- Nut; 25- Threaded rod; 26- Knob; 27- Limiting groove; 28- Limiting block; 29- Snap-fit ​​bevel; 30- Snap-fit ​​block; 31- Rotating bevel; 32- Abutment groove; 33- Abutment part; 34- Grip space; 35- Mounting base; 36- Blade; 37- Drive motor; 38- Power spindle; 39- Extension part; 40- Rotating cavity; 41- Upper clamping plate; 42- Extension boss; 43- Lower clamping plate; 44- Threaded connecting rod; 45- Snap-fit ​​notch;

[0038] 46-Clamping platform; 47-Fixing hole; 48-Fixing rod; 49-Limiting piece; 50-Push piece;

[0039] 51-Push spring; 52-Sliding hole; 53-Driving gear; 54-Driven gear;

[0040] 55 - Motor shaft; 56 - Chassis; 57 - Nut; 58 - Mounting hole. Detailed Implementation

[0041] The present invention will be further described below with reference to specific embodiments:

[0042] This utility model belongs to the field of garden tool technology, specifically referring to a rotating structure for a lawnmower handle. It includes a connecting rod 1, a lawnmower head 2 located at the bottom of the connecting rod 1, a secondary handle 3 located on the connecting rod 1, and a main handle 4 rotatably located at the top of the connecting rod 1. The lawnmower head 2 is the same as those found on commercially available lawnmowers; when in operation, it rotates through the blades. Users simply hold the secondary handle 3 with one hand and the main handle 4 with the other, lifting the lawnmower off the ground to begin operation. The connecting rod 1 has a connecting part 5, with a mounting part 6 at its top. The rotating part 7 on the main handle 4 is rotatably connected to the mounting part 6 at the top of the connecting part 5, allowing the main handle 4 to rotate relative to the connecting part 5. When the user rotates the main handle 4, the angle between the main handle 4 and the connecting rod 1 changes, altering the user's grip posture and wrist position. This prevents users from maintaining a single grip posture for extended periods, avoiding wrist pain that could affect normal work and reduce efficiency.

[0043] Preferably, the mounting part 6 has a mounting cavity 8, the rotating part 7 is disposed in the mounting cavity 8, the rotating part 7 has a rotating tooth groove 9, and the side wall of the mounting cavity 8 has a snap-fit ​​tooth groove 10, the snap-fit ​​tooth groove 10 and the rotating tooth groove 9 are positioned correspondingly, the connecting part 5 has a pressing member 11, the pressing member 11 has a snap-fit ​​tooth part 12 around it, the pressing member 11 is located in the snap-fit ​​tooth groove 10 and the rotating tooth groove 9, and the snap-fit ​​tooth part 12 on the pressing member 11 is aligned with the snap-fit ​​tooth groove. 10. When the rotating tooth groove 9 engages, the mounting part 6 and the rotating part 7 enter a locked state. Pressing the pressing member 11 can drive the locking tooth part 12 to move inward, causing the locking tooth part 12 to disengage from the rotating tooth groove 9. At this time, the mounting part 6 and the rotating part 7 are released from the locked state, and the main handle 4 can rotate relative to the connecting part 5. Since the rotating part 7 on the main handle 4 is rotatably set in the mounting cavity 8 of the mounting part 6, the main handle 4 can be smoothly rotatably connected to the connecting part 5. The mounting cavity 7 has a rotating toothed groove 9, and the mounting cavity 8 has a snap-fit ​​toothed groove 10 on its side wall. The snap-fit ​​toothed groove 10 corresponds to the rotating toothed groove 9. The pressing member 11 on the connecting part 5 has a snap-fit ​​toothed part 12. When the pressing member 11 is located in the snap-fit ​​toothed groove 10 and the rotating toothed groove 9, the snap-fit ​​toothed part 12 on the pressing member 11 engages with the snap-fit ​​toothed groove 10 and the rotating toothed groove 9. The snap-fit ​​toothed part 12 also engages with the mounting part 6 and the rotating part 7. At this time, the mounting part 6 and the rotating part 7 are locked together. Since part 7 cannot rotate relative to the mounting part 6, when the user needs to adjust the grip posture, the user can press the pressing member 11 to move it inward, so that the locking tooth part 12 on the pressing member 11 moves inward synchronously with the pressing member 11. At this time, the locking tooth part 12 will disengage from the rotating tooth groove 9 and release the locking from the mounting part 6, so that the mounting part 6 and the rotating part 7 are released from the locked state. At this time, the main handle 4 can rotate relative to the connecting part 5, so that the user's grip posture can be changed.

[0044] Preferably, a limiting post 13 is provided in the rotating tooth groove 9, and a mounting post 14 is provided on the inner side of the pressing member 11. A return spring 15 is provided between the mounting post 14 and the limiting post 13. The two ends of the return spring 15 are respectively sleeved on the limiting post 13 and the mounting post 14. The two ends of the return spring 15 are respectively sleeved on the limiting post 13 in the rotating tooth groove 9 and the mounting post 14 on the inner side of the pressing member 11, thereby restricting the free movement of the return spring 15. When the user releases the pressing member 11 and moves it inward, the return spring 15 will be in a compressed state. After the angle of the handle 4 is adjusted, the compressed return spring 15 will push the pressing part 11 to move outward, so that the locking teeth 12 on the pressing part 11 re-engage with the locking teeth 10 and the rotating teeth 9, preventing the main handle 4 from continuing to rotate to adjust the angle between it and the connecting rod 1. This ensures that the user's normal operation will not be affected by the rotation of the main handle when holding it. Furthermore, the setting of the return spring 15 means that when the user releases the pressing part 11, the pressing part 11 can automatically return to its initial position without the user having to manually reset the pressing part 11.

[0045] Preferably, the inner wall of the locking groove 10 is provided with a limiting boss 17, and the locking part 12 includes a plurality of locking blocks 18 arranged around the pressing member 11, and each locking block 18 can abut against the limiting boss 17. Since the locking part 12 is composed of a plurality of locking blocks 18, and the locking blocks 18 can abut against the limiting boss 17, the return spring 15 can be prevented from directly pushing the pressing member 11 out of the locking groove 10 and the rotating groove 9, thereby preventing the rotating part 7 from separating from the connecting part 5 and causing the main handle 4 to fall off the connecting part 5.

[0046] Preferably, the secondary handle 3 is rotatably mounted on the connecting part 5. The secondary handle 3 is provided with a first connecting plate 19 and a second connecting plate 20. The connecting part 5 is provided with a rotating block 21, which is located between the first connecting plate 19 and the second connecting plate 20. The rotating block 21 is provided with a through hole 22. Both the first connecting plate 19 and the second connecting plate 20 are provided with connecting holes 23. A nut 24 is fixedly installed in the connecting hole 23 of the first connecting plate 19. The rotating block 21 is provided with a threaded rod 25. One end of the threaded rod 25 passes through the connecting hole 23 and the through hole 22 of the first connecting plate 19 and is threadedly connected to the nut 24. The other end of the threaded rod 25 is provided with a knob 26. The inner side of the knob 26 can abut against the second connecting plate 20. Since the threaded rod 25 on the knob 26 passes through the connecting hole 23 of the first connecting plate 19 and the through hole 22 on the rotating block 21 and is threadedly connected to the nut 24 in the connecting hole 23 of the first connecting plate 19, when the user continues to rotate the knob 26, the first... When the first connecting plate 19 and the second connecting plate 20 approach each other, they clamp the rotating block 21, thus locking the first connecting plate 19, the second connecting plate 20, and the rotating block 21. At this time, the auxiliary handle 3 cannot rotate relative to the rotating block 21. When the user wants to adjust the angle between the auxiliary handle 3 and the connecting part 5, the user can turn the knob 26 in the opposite direction to release the locking state between the first connecting plate 19, the second connecting plate 20, and the rotating block 21. At this time, the user can rotate the auxiliary handle 3, and the angle between the auxiliary handle 3 and the connecting part 5 can be adjusted by rotating the auxiliary handle 3. This works in conjunction with the rotation structure of the main handle 4. Compared with existing lawnmowers on the market that can only adjust the angle of the auxiliary handle 3, this utility model can adjust the angle of the main handle 4 alone, as well as the angle of the auxiliary handle 3. This allows both the auxiliary handle 3 and the main handle 4 to rotate, changing the grip posture of both wrists and preventing wrist pain after long-term work.

[0047] Preferably, both sides of the rotating block 21 are provided with limiting grooves 27, and a plurality of limiting blocks 28 are provided in the inner ring of the limiting grooves 27. Both sides of the limiting blocks 28 are provided with snap-fit ​​inclined surfaces 29. The inner sides of the first connecting plate 19 and the second connecting plate 20 are each provided with a plurality of snap-fit ​​blocks 30. Both sides of the snap-fit ​​blocks 30 are provided with rotating inclined surfaces 31 that are adapted to the snap-fit ​​inclined surfaces 29. The snap-fit ​​blocks 30 snap with the limiting blocks 28, at which time the rotating inclined surfaces 31 are in contact with the snap-fit ​​inclined surfaces 29. The snap-fit ​​blocks 30 on the inner side of the first connecting plate 19 are located in the limiting groove 27 on the left side of the rotating block 21 and snap with the limiting blocks 28 in the limiting groove 27. The snap-fit ​​blocks 30 on the inner side of the second connecting plate 20 are located in the limiting groove 27 on the right side of the rotating block 21. The first connecting plate 19, the second connecting plate 20, and the rotating block 21 are locked together, making the first connecting plate 19, the second connecting plate 20, and the rotating block 21 more tightly locked. This ensures that the auxiliary handle 3 cannot rotate when the first connecting plate 19, the second connecting plate 20, and the rotating block 21 are locked together. The rotating inclined surfaces 31 on both sides of the locking block 30 are adapted to the locking inclined surfaces 29 on both sides of the limiting block 28. When the locking block 30 is locked together with the limiting block 28, the rotating inclined surfaces 31 and 29 are in contact. Therefore, when the first connecting plate 19, the second connecting plate 20, and the rotating block 21 are released from the locked state, the user can apply a little force to drive the auxiliary handle 3 to rotate, ensuring that the auxiliary handle 3 can be adjusted normally.

[0048] Preferably, the outer side of the second connecting plate 20 is provided with an abutment groove 32, the connecting hole 23 is provided at the bottom of the abutment groove 32, and the inner side of the knob 26 is provided with an abutment part 33. The abutment part 33 is located in the abutment groove 32 and abuts against the second connecting plate 20. When the user rotates the knob 26, the knob 26 will move inward together with the threaded rod 25. At this time, the abutment part 33 on the inner side of the knob 26 will enter the abutment groove 32 on the outer side of the second connecting plate 20 and abut against the second connecting plate 20, thereby making the locking force between the second connecting plate 20 and the rotating block 21 stronger.

[0049] Preferably, both the main handle 4 and the auxiliary handle 3 are provided with a gripping space 34; the gripping space 34 on the main handle 4 and the gripping space 34 on the auxiliary handle 3 make it easier for the user to hold the main handle 4 and the auxiliary handle 3, making it easier and more convenient for the user to control the lawn mower.

[0050] Preferably, the trimmer head 2 includes a mounting base 35, a blade 36 mounted on the mounting base 35, and a power assembly for controlling the rotation of the blade 36 within the mounting base 35. The power assembly includes a drive motor 37, a power spindle 38, and a transmission assembly. The transmission assembly is located between the drive motor 37 and the power spindle 38. After the drive motor 37 operates, it can drive the power spindle 38 to rotate through the transmission assembly. The bottom of the mounting base 35 has an extension portion 39, and a rotating cavity 40 is formed on the extension portion 39. The power spindle 38 passes through the rotating cavity 40 and protrudes outside the mounting base 35. An upper clamping plate 41 is provided inside the rotating cavity 40. The upper clamping plate 41 is sleeved on the power spindle 38 and fixedly connected to it. The bottom of the upper clamping plate 41 has an extension boss 42. The blade 36 is sleeved on the extension boss 42 and located below the upper clamping plate 41. A lower clamping plate 43 is also fitted on the power spindle 38. The lower clamping plate 43 is located below the blade 36. The two ends of the blade 36 can respectively abut against the upper clamping plate 41 and the lower clamping plate 43. A threaded connecting rod 44 is provided at the bottom of the power spindle 38. A clamping component is threadedly connected to the threaded connecting rod 44. The clamping component can abut against the bottom surface of the lower clamping plate 43. A snap-fit ​​notch 45 communicating with the rotating cavity 40 is opened on the side wall of the extension 39. A snap-fit ​​platform 46 is also provided at the bottom of the mounting base 35. The snap-fit ​​platform 46 is located on one side of the snap-fit ​​notch 45. A fixing component 16 is slidably provided on the snap-fit ​​platform 46. A fixing hole 47 is opened on the upper clamping plate 41. After the fixing hole 47 corresponds to the snap-fit ​​notch 45, pushing the fixing component 16 can make one end of the fixing component 16 enter the fixing hole 47, thereby restricting the rotation of the upper clamping plate 41.The extension 39 at the bottom of the mounting base 35 contains a rotating cavity 40. The rotating cavity 40 allows the power spindle 38 to pass smoothly through the rotating cavity 40 and protrude outside the mounting base 35. The upper clamping plate 41 inside the rotating cavity 40 is sleeved on the power spindle 38 and fixedly connected to it. The blade 36 is sleeved on the extension boss 42 at the bottom of the upper clamping plate 41. The clamping assembly is threadedly connected to the threaded connecting rod 44 at the bottom of the power spindle 38. The user can rotate the clamping assembly to make it abut against the bottom surface of the lower clamping plate 43. Thus, the blade 36 is clamped by the mutual cooperation between the lower clamping plate 43 and the upper clamping plate 41. Locking: When the user controls the drive motor 37 to start working, the drive motor 37 will drive the power spindle 38 to rotate through the transmission assembly. The power spindle 38 will drive the upper pressure plate 41, lower pressure plate 43, and blade 36 to rotate synchronously, enabling the lawn mower to work normally. However, after the blade 36 has been used for a long time, the user needs to replace the blade 36. To remove the blade 36, the user needs to manually rotate the blade 36 first, so that the blade 36 drives the lower pressure plate 43 and upper pressure plate 41 to rotate synchronously, so that the fixing hole 47 on the upper pressure plate 41 aligns with the snap-fit ​​notch 45 on the side wall of the extension 39. Due to the snap-fit... Notch 45 is connected to rotating cavity 40, and upper clamping plate 41 is disposed inside rotating cavity 40. The snap-fit ​​platform 46 at the bottom of mounting base 35 is located on one side of snap-fit ​​notch 45. A fixing component 16 is slidably mounted on snap-fit ​​platform 46. When the fixing component 16 on snap-fit ​​platform 46 is moved inward, one end of the fixing component 16 enters the fixing hole 47 of upper clamping plate 41, thereby restricting the rotation of upper clamping plate 41. At this point, the user can smoothly rotate the clamping component to remove it from threaded connecting rod 44, allowing lower clamping plate 43 and blade 36 to be sequentially removed from power spindle 38 for installation of new... When installing the blade 36, the user needs to first place the blade 36 and the lower clamping plate 43 onto the power spindle 38 in sequence. During this process, one end of the fixing component 16 remains in the fixing hole 47 of the upper clamping plate 41, allowing the user to smoothly rotate the clamping component onto the threaded connecting rod 44, so that the clamping component can smoothly abut against the lower clamping plate 43. This allows the new blade 36 to be locked by the lower clamping plate 43 and the upper clamping plate 41, enabling the lawnmower to operate normally. The fixing component 16 on the snap-fit ​​platform 46 eliminates the need for the user to carry a separate tool for fixing the upper clamping plate 41, facilitating the disassembly and installation of the blade 36.

[0051] Preferably, the fixing assembly 16 includes a fixing rod 48, a limiting piece 49 and a pushing piece 50 disposed on the fixing rod 48, and a pushing spring 51 sleeved on the fixing rod 48. The locking platform 46 has a sliding hole 52, and the fixing rod 48 is slidably disposed within the sliding hole 52. The limiting piece 49 can abut against the inner surface of the locking platform 46, and the two ends of the pushing spring 51 abut against the outer surface of the locking platform 46 and the pushing piece 50, respectively. The fixing assembly 16 is composed of the limiting piece 49 and the pushing piece 50 disposed on the fixing rod 48, and the pushing spring 51 sleeved on the fixing rod 48. The sliding hole 52 on the locking platform 46 allows the fixing rod 48 to slide smoothly on the locking platform 46, while the limiting piece 49 on the fixing rod 48 abuts against the inner surface of the locking platform 46. This prevents the fixed rod 48 from disengaging from the sliding hole 52. Since the two ends of the push spring 51 abut against the outer side of the locking platform 46 and the push plate 50 respectively, when the user presses the fixed rod 48, the push spring 51 will enter the compressed state, and the fixed rod 48 will enter the fixed hole 47 of the upper pressure plate 41 through the locking notch 45 on the side wall of the extension 39, thereby restricting the rotation of the upper pressure plate 41. When the blade 36 is installed, the fixed rod 48 is released, and the compressed push spring 51 will push the fixed rod 48 to automatically reset, so that one end of the fixed rod 48 disengages from the fixed hole 47, and the blade 36 on the lawnmower can rotate normally. The push spring 51 makes it more convenient for the user to remove one end of the fixed rod 48 from the fixed hole 47 without having to manually pull it out.

[0052] Preferably, the transmission assembly includes a driving gear 53 and a driven gear 54 meshing with the driving gear 53. The driven gear 54 is mounted on the power spindle 38. The drive motor 37 has a motor shaft 55, and the driving gear 53 is mounted on the motor shaft 55. The clamping assembly includes a chassis 56 and a nut 57. The chassis 56 has a mounting hole 58, and the threaded connecting rod 44 can be disposed in the mounting hole 58. At this time, the chassis 56 abuts against the lower clamping plate 43, and the nut 57 is threadedly connected to the threaded rod 25, and the nut 57 is located below the chassis 56 and abuts against the chassis 56. When the drive motor 37 starts working, the drive motor 37 will drive the motor shaft 55 to rotate, and the motor shaft 55 will drive the motor. The drive gear 53 on shaft 55 rotates synchronously. Since the driven gear 54 is located on the power main shaft 38 and meshes with the drive gear 53, when the drive gear 53 rotates, it will drive the driven gear 54 to rotate. The driven gear 54 drives the power main shaft 38 to rotate smoothly, so that the blade 36 can rotate smoothly. The clamping assembly consists of a base 56 and a nut 57. The user can rotate the nut 57 to make the nut 57 abut against the lower clamping plate 43, so that the lower clamping plate 43 and the blade 36 are locked. When disassembling the blade 36, the user only needs to rotate the nut 57 off the threaded connecting rod 44. At this time, the base 56, the lower clamping plate and the blade 36 can be disassembled in sequence. The operation is simple, quick and convenient.

[0053] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A rotating structure for a mower handle, comprising a connecting rod (1), a mowing head (2) disposed at the bottom of the connecting rod (1), a secondary handle (3) disposed on the connecting rod (1), and a main handle (4) rotatably disposed at the top of the connecting rod (1), characterized in that: The connecting rod (1) is provided with a connecting part (5), the top end of the connecting part (5) is provided with a mounting part (6), the main handle (4) is provided with a rotating part (7) that is rotatably connected to the mounting part (6), and the main handle (4) can rotate relative to the connecting part (5).

2. The rotating structure of a lawn mower handle according to claim 1, characterized in that: The mounting part (6) has a mounting cavity (8), the rotating part (7) is disposed in the mounting cavity (8), the rotating part (7) has a rotating tooth groove (9), the side wall of the mounting cavity (8) has a snap-fit ​​tooth groove (10), the snap-fit ​​tooth groove (10) is positioned corresponding to the rotating tooth groove (9), the connecting part (5) has a pressing member (11), the pressing member (11) has a circumferential snap-fit ​​tooth part (12), and the pressing member (11) is located in the snap-fit ​​tooth groove (10). The toothed part (12) on the pressing member (11) engages with the locking toothed part (10) and the rotating toothed part (9). At this time, the mounting part (6) and the rotating part (7) are locked. Pressing the pressing member (11) can drive the toothed part (12) to move inward, so that the toothed part (12) disengages from the rotating toothed part (9). At this time, the mounting part (6) and the rotating part (7) are unlocked, and the main handle (4) can rotate relative to the connecting part (5).

3. The rotating structure of a lawn mower handle according to claim 2, characterized in that: The rotating tooth groove (9) is provided with a limiting post (13), and the pressing member (11) is provided with a mounting post (14) on its inner side. A reset spring (15) is provided between the mounting post (14) and the limiting post (13). The two ends of the reset spring (15) are respectively sleeved on the limiting post (13) and the mounting post (14).

4. The rotating structure of a lawn mower handle according to claim 3, characterized in that: The inner wall of the snap-fit ​​groove (10) is provided with a limiting boss (17), and the snap-fit ​​part (12) includes a plurality of snap-fit ​​blocks (18) arranged around the pressing member (11), and each snap-fit ​​block (18) can abut against the limiting boss (17).

5. The rotating structure of a lawn mower handle according to any one of claims 1-4, characterized in that: The secondary handle (3) is rotatably mounted on the connecting part (5). The secondary handle (3) is provided with a first connecting plate (19) and a second connecting plate (20). The connecting part (5) is provided with a rotating block (21), which is located between the first connecting plate (19) and the second connecting plate (20). The rotating block (21) is provided with a through hole (22). The first connecting plate (19) and the second connecting plate (20) are both provided with connecting holes (23). A nut (24) is fixedly provided in the connecting hole (23) of the first connecting plate (19). The rotating block (21) is provided with a threaded rod (25). One end of the threaded rod (25) passes through the connecting hole (23) and the through hole (22) of the first connecting plate (19) and is threadedly connected to the nut (24). The other end of the threaded rod (25) is provided with a knob (26). The inner side of the knob (26) can abut against the second connecting plate (20).

6. The rotating structure of a lawn mower handle according to claim 5, characterized in that: The rotating block (21) has limiting grooves (27) on both sides, and a number of limiting blocks (28) are arranged in the inner ring of the limiting grooves (27). The limiting blocks (28) have snap-fit ​​inclined surfaces (29) on both sides. The inner sides of the first connecting plate (19) and the second connecting plate (20) are arranged with a number of snap-fit ​​blocks (30). The snap-fit ​​blocks (30) have rotating inclined surfaces (31) on both sides that are adapted to the snap-fit ​​inclined surfaces (29). The snap-fit ​​blocks (30) snap-fit ​​with the limiting blocks (28). At this time, the rotating inclined surfaces (31) are in contact with the snap-fit ​​inclined surfaces (29).

7. The rotating structure of a lawn mower handle according to claim 5, characterized in that: The outer side of the second connecting plate (20) is provided with an abutment groove (32), the connecting hole (23) is provided at the bottom of the abutment groove (32), the inner side of the knob (26) is provided with an abutment part (33), the abutment part (33) is located in the abutment groove (32) and abuts against the second connecting plate (20), and both the main handle (4) and the auxiliary handle (3) are provided with a grip space (34).

8. The rotating structure of a lawn mower handle according to claim 1, characterized in that: The grass trimmer (2) includes a mounting base (35), a blade (36) mounted on the mounting base (35), and a power assembly for controlling the rotation of the blade (36) within the mounting base (35). The power assembly includes a drive motor (37), a power spindle (38), and a transmission assembly. The transmission assembly is located between the drive motor (37) and the power spindle (38). After the drive motor (37) is working, it can drive the power spindle (38) to rotate through the transmission assembly. The bottom of the mounting base (35) is provided with an extension. (39) The extension (39) has a rotating cavity (40) and the power spindle (38) passes through the rotating cavity (40) and protrudes outside the mounting base (35). The rotating cavity (40) has an upper clamping plate (41) which is sleeved on the power spindle (38) and fixedly connected to it. The bottom of the upper clamping plate (41) has an extension boss (42). The blade (36) is sleeved on the extension boss (42) and located below the upper clamping plate (41). A lower clamping plate (43) is also fitted on the main shaft (38). The lower clamping plate (43) is located below the blade (36). The two ends of the blade (36) can respectively abut against the upper clamping plate (41) and the lower clamping plate (43). A threaded connecting rod (44) is provided at the bottom of the power main shaft (38). A clamping assembly is threadedly connected to the threaded connecting rod (44). The clamping assembly can abut against the bottom surface of the lower clamping plate (43). A side wall of the extension (39) is provided with a connection to the rotating cavity (40). The mounting base (35) has a snap-fit ​​notch (45) and a snap-fit ​​platform (46) at the bottom. The snap-fit ​​platform (46) is located on one side of the snap-fit ​​notch (45). A fixing component (16) is slidably provided on the snap-fit ​​platform (46). A fixing hole (47) is provided on the upper pressing plate (41). After the fixing hole (47) corresponds to the position of the snap-fit ​​notch (45), pushing the fixing component (16) will allow one end of the fixing component (16) to enter the fixing hole (47), thereby restricting the rotation of the upper pressing plate (41).

9. The rotating structure of a lawn mower handle according to claim 8, characterized in that: The fixing component (16) includes a fixing rod (48), a limiting piece (49) and a pushing piece (50) disposed on the fixing rod (48), and a pushing spring (51) sleeved on the fixing rod (48). The locking platform (46) is provided with a sliding hole (52). The fixing rod (48) is slidably disposed in the sliding hole (52). The limiting piece (49) can abut against the inner side of the locking platform (46). The two ends of the pushing spring (51) abut against the outer side of the locking platform (46) and the pushing piece (50) respectively.

10. The rotating structure of a lawn mower handle according to claim 8, characterized in that: The transmission assembly includes a drive gear (53) and a driven gear (54) meshing with the drive gear (53). The driven gear (54) is mounted on the power spindle (38). The drive motor (37) has a motor shaft (55). The drive gear (53) is mounted on the motor shaft (55). The clamping assembly includes a chassis (56) and a nut (57). The chassis (56) has a mounting hole (58). The threaded connecting rod (44) can be mounted in the mounting hole (58). At this time, the chassis (56) abuts against the lower clamping plate (43). The nut (57) is threadedly connected to the threaded connecting rod (44), and the nut (57) is located below the chassis (56) and abuts against the chassis (56).

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