Grass discharging mechanism and mower

Abstract

The application discloses a grass discharging mechanism and a mower. The grass discharging mechanism comprises a cutter disc assembly, a first grass collecting channel, a grass collecting cover plate, and a side guide groove plate. The cutter disc assembly comprises a cutter disc enclosed by side plates and a top plate, and the top plate and the side plates are provided with openings. The first end of the first grass collecting channel covers at least the openings on the top plate, so that the first grass collecting channel is in communication with the inside of the cutter disc. The grass collecting cover plate is movably arranged on the first grass collecting channel. The movable grass collecting cover plate covers the openings on the side plates at a preset position and uncovers the openings on the side plates at other positions. The side guide groove plate is arranged at the openings of the side plates and comprises side guide grooves in communication with the openings of the side plates. The end of the side guide groove plate extends towards the cutter disc and covers at least the openings on the top plate. The grass crushing cover plate is arranged at the openings of the side plates and covers at least the openings on the top plate and the side plates. The application integrates multiple grass discharging functions, and the functions can be flexibly and reliably switched. Users can select a suitable grass discharging mode according to specific needs.

Description

Technical Field

[0001] This application relates to the field of lawnmower technology, and in particular to a grass-removing mechanism and a lawnmower. Background Technology

[0002] Lawn mowers are widely used as garden tools for mowing lawns and vegetation. Currently, there are roughly three ways to discharge grass after mowing: the most common is the rear discharge method, where the cut grass is discharged from the rear of the discharge mechanism; the second is the side discharge method, where the cut grass is discharged from the side of the discharge mechanism; and the third is the shredding method, where the shredded grass can be collected in a grass collection bag for further processing.

[0003] The existing lawnmowers have relatively simple grass removal mechanisms and cannot integrate the three grass removal methods mentioned above, which makes it impossible for users to choose the appropriate grass removal method according to their specific needs.

[0004] Therefore, in view of the above-mentioned technical problems, how to simultaneously satisfy the grass shredding, rear grass discharge, and side grass discharge methods is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this application is to provide a grass removal mechanism and a lawnmower. The grass removal mechanism integrates multiple grass removal functions, and the functions can be switched flexibly and reliably. Users can choose the appropriate grass removal method according to their specific needs.

[0006] To achieve the above objectives, this application provides a weed removal mechanism, comprising:

[0007] A cutter head assembly includes a cutter head formed by a side plate and a top plate, wherein the top plate and the side plate are provided with openings;

[0008] The first grass collection channel has its first end covering at least the opening on the top plate, so that the first grass collection channel communicates with the interior of the cutter head;

[0009] A grass collection cover is movably mounted on the first grass collection channel. The movable grass collection cover covers the opening on the side plate at a preset position and opens the opening on the side plate at other positions besides the preset position.

[0010] A side guide plate is provided at the opening of the side plate, including a side guide groove communicating with the opening of the side plate, the end of the side guide plate extending toward the cutter head, and at least covering the opening on the top plate;

[0011] A straw shredder cover is provided at the opening of the side panel and at least covers the openings of the top panel and the side panel.

[0012] Preferably, the second end of the first grass collection channel is connected to a second grass collection channel, and the second grass collection channel is connected to a grass collection box.

[0013] Preferably, the second grass collection channel is mounted on the frame of the lawnmower via a limiting bracket, the second grass collection channel is inserted into the first grass collection channel, and several tensioning devices are provided on the outer periphery of the first grass collection channel and the second channel to connect the two.

[0014] Preferably, the tensioning device includes a first fixing member fixed on the first grass collection channel, a second fixing member fixed on the second grass collection channel, and a tensioning strip connecting the first fixing member and the second fixing member. The tensioning strip has limiting holes at both ends that are sleeved on the outer periphery of the first fixing member and the second fixing member, and the tensioning strip has a tensioning force that brings the first fixing member and the second fixing member closer to each other.

[0015] Preferably, the outer wall of the first grass collection channel is provided with a rotating component for the grass collection cover to move, the rotating component comprising:

[0016] A fixed bracket is fixedly installed on the first grass collection channel, and the fixed bracket has side brackets protruding to the same side at both ends;

[0017] The support shaft is mounted on the two side supports at both ends, and the grass collection cover is rotatably connected to the support shaft so that the grass collection cover rotates about the axis of the support shaft.

[0018] A torsion spring is sleeved on the outer periphery of the support shaft. One end of the torsion spring is fixedly connected to the fixed bracket or the first grass collection channel, and the other end is connected to the grass collection cover plate. The torsion spring has an initial torque, which is used to provide the grass collection cover plate with the torque to rotate facing the opening on the side plate.

[0019] Preferably, the first end of the first grass collection channel is provided with an extension end extending toward the cutter disc, the extension end abutting against the cutter disc, and a side opening corresponding to the opening on the side plate is provided on the extension end, and the grass collection cover plate covers the side opening at the preset position.

[0020] Preferably, the side guide plate and / or the straw cover plate covering the opening on the top plate is provided with a slot, and the top plate is provided with a lug that engages with the slot.

[0021] Preferably, the grass collection cover plate abuts against the side guide trough plate or the grass shredder cover plate, and the grass collection cover plate with torque is used to provide a clamping force for the side guide trough plate or the grass shredder cover plate to press against the cutter head.

[0022] Preferably, the grass collection cover is provided with a locking assembly, the locking assembly including a locking tongue and a return spring connected to the locking tongue, the other end of the return spring abutting against the grass collection cover, the locking tongue including a hook-shaped part extending into the side opening and engaging with the inner edge of the side opening to restrict the grass collection cover from disengaging from the extension end, and the movable locking tongue having a position that disengages the hook-shaped part from the inner edge of the side opening.

[0023] A lawnmower includes the aforementioned grass-removing mechanism.

[0024] Compared to the aforementioned background technology, this application provides openings in the top and side plates of the cutter head, with the first end of the first grass collection channel located at the opening in the top plate, thereby connecting the first grass collection channel to the interior of the cutter head. When the rear grass discharge mode is selected, the movable grass collection cover plate closes to the opening on the side plate at a preset position, allowing the cut grass to be discharged rearward through the first grass collection channel. When the side grass discharge mode is selected, the movable grass collection cover plate can open the opening on the side plate, and a side guide groove plate is provided at the opening of the side plate. The side guide groove of the side guide plate is connected to the opening of the side plate, and the end of the side guide groove plate can cover the opening on the top plate, thereby blocking the first grass collection channel from communicating with the inside of the cutter head. This allows the cut grass to enter the side guide groove plate through the opening in the side plate, achieving side grass discharge. When the grass shredding mode is selected, the movable grass collection cover opens the opening on the side plate, and the grass shredding cover is located at the opening of the side plate. The grass shredding cover can cover the openings in the top plate and side plate, thus closing the openings on the cutter head and achieving grass shredding within the cutter head. This application integrates three grass discharge methods, and the switching between each method is flexible and reliable, allowing users to select different grass discharge methods according to actual conditions. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the grass removal mechanism provided in the embodiments of this application;

[0027] Figure 2 This is a schematic diagram of another state structure of the grass removal mechanism provided in the embodiments of this application;

[0028] Figure 3 This is a schematic diagram of the grass-clearing mechanism provided in an embodiment of this application from another perspective;

[0029] Figure 4This is a schematic diagram of the tensioning device structure provided in the embodiments of this application;

[0030] Figure 5 This is a schematic diagram of the structure of the first and second fasteners provided in the embodiments of this application, representing a first implementation.

[0031] Figure 6 A schematic diagram of the fixing structure of the first and second fasteners provided in the embodiments of this application;

[0032] Figure 7 This is a schematic diagram of a second embodiment of the first and second fasteners provided in the embodiments of this application;

[0033] Figure 8 A schematic diagram of the fixing structure of the first and second fasteners provided in the embodiments of this application, showing a second implementation of the fixing structure.

[0034] Figure 9 A schematic diagram illustrating the structure of the rotating component and locking assembly provided in the embodiments of this application;

[0035] Figure 10 This is a schematic diagram of the rotating component structure provided in the embodiments of this application;

[0036] Figure 11 This is a schematic diagram of the locking assembly structure provided in an embodiment of this application;

[0037] Figure 12 This is a schematic diagram of the internal structure of the locking assembly provided in the embodiments of this application;

[0038] Figure 13 This is a schematic diagram of the cutter head structure provided in an embodiment of this application;

[0039] Figure 14 This is a schematic diagram of the side guide plate structure provided in an embodiment of this application;

[0040] Figure 15 This is a schematic diagram of the mating structure between the side guide groove plate and the cutter head provided in an embodiment of this application;

[0041] Figure 16 This is a schematic diagram of the grass clipping cover structure provided in an embodiment of this application;

[0042] Figure 17 This is a schematic diagram of the structure of the grass shredder cover and the cutter head provided in the embodiment of this application.

[0043] In the diagram: 01 - chassis; 02 - limit bracket;

[0044] 1-Cutter head; 2-First grass collection channel; 3-Second grass collection channel; 4-Grass collection box; 5-Tensioning device; 6-Grass collection cover plate; 7-Side guide plate; 8-Grass shred cover plate;

[0045] 11-Top plate; 12-Side plate; 13-Support lug;

[0046] 21-Extension end; 22-Side opening;

[0047] 51-First fastener; 52-Second fastener; 53-Tensioning strip; 54-Limiting hole; 511-Washer; 512-Bushing; 513-Cap nut; 514-Screw; 521-T-screw; 522-Locking nut;

[0048] 61-Rotating component; 62-Lock assembly; 611-Fixed bracket; 612-Side bracket; 613-Support shaft; 614-Torsion spring; 621-Lock pressure plate; 622-Lock tongue; 623-Hook-shaped part; 624-Reset spring;

[0049] 71-Card slot. Detailed Implementation

[0050] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] It should be noted that in this embodiment, the orientation or positional relationship indicated by terms such as "upper," "lower," "front," and "rear" is based on the orientation or positional relationship shown in the accompanying drawings. It is used only for the convenience of describing this application and for simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0053] like Figure 1 As shown, in this embodiment, a grass-discharging mechanism is provided, which includes a cutter head assembly, a first grass-collecting channel 2, a grass-collecting cover plate 6, a side guide plate 7, and a grass-crushing cover plate 8, etc. The cutter head assembly includes a cutter head 1 formed by side plates 12 and a top plate 11. Please refer to... Figure 13 The lower side of the cutter head 1 is open, allowing the grass to be cut to enter the interior of the cutter head 1 and work with the blades in the cutter head assembly to cut the grass. The blades can be mounted on the top plate 11 of the cutter head 1, and the cutting part of the blades is located inside the cutter head 1. Details will not be described here, but please refer to existing technology for specific details.

[0054] Please refer to Figure 13 The cutter head 1 has openings on its top plate 11 and side plate 12. These openings can be a single, continuous opening or two separate openings on the top plate 11 and side plate 12; no further restrictions are imposed, and both fall within the scope of this application. The first end of the first grass-collecting channel 2 at least covers the opening on the top plate 11, allowing the shredded grass in the cutter head 1 to enter the first grass-collecting channel 2 through the opening on the top plate 11, and then be discharged backwards through the first grass-collecting channel 2. Alternatively, the first end of the first grass-collecting channel 2 may also cover part of the opening on the side plate 12, allowing grass to be discharged backwards through the combined openings on the top plate 11 and side plate 12.

[0055] However, it should be noted that when using the side-discharge method, if the first end of the first grass collection channel 2 is covered by part of the opening on the side plate 12, then the side guide plate 7, in addition to covering the opening on the top plate 11, also needs to cover part of the opening on the side plate 12 corresponding to the first grass collection channel 2, to prevent grass fragments from entering the first grass collection channel 2 through this part of the opening, and to ensure that only the side-discharge method is used.

[0056] The grass collection cover 6 is movably mounted on the first grass collection channel 2. The movement can be rotation, sliding, etc. There are no restrictions here. It is ensured that the movable grass collection cover 6 has at least one preset position so that the grass collection cover 6 can cover the opening of the side plate 12, so that the grass clippings cannot be discharged from the opening of the side plate 12. At this time, the interior of the cutter head 1 is only connected to the first grass collection channel 2, thereby realizing the rear grass discharge method.

[0057] When the movable grass collection cover 6 moves to a position other than the preset position mentioned above, the grass collection cover 6 cannot close the opening of the side plate 12, and the opening on the side plate 12 is in the open state. In this case, different grass discharge functions can be achieved by installing the side guide plate 7 or the grass shred cover 8.

[0058] Specifically, when the opening of the side plate 12 is in the open state, a side guide groove plate 7 can be installed at the opening of the side plate 12. Please refer to... Figure 1 The side guide plate 7 includes a side guide groove that communicates with the opening of the side plate 12. When the side guide plate 7 is assembled in place, the side guide groove can communicate with the opening of the side plate 12, and the end of the side guide plate 7 can extend toward the cutter head 1, so that the end of the side guide plate 7 at least covers the opening of the top plate 11. Of course, the side guide plate 7 can also cover part of the opening on the side plate 12, thereby completely blocking the communication between the first grass collection channel 2 and the inside of the cutter head 1, so that under the action of the side guide plate 7, only the side grass discharge mode is realized.

[0059] Furthermore, when the opening of the side panel 12 is in the open state, a grass clipping cover 8 can also be installed at the opening of the side panel 12, such as... Figure 2 and Figure 17 As shown, the grass shredder cover 8 can cover the openings on the top plate 11 and the side plate 12, so that the interior of the cutter head 1 cannot communicate with the outside through the openings on the top plate 11 or the side plate 12, thus keeping the grass shredder only inside the cutter head 1 and realizing the grass shredder discharge method.

[0060] In summary, this application provides openings in the top plate 11 and side plate 12 of the cutter head 1. The first end of the first grass collection channel 2 is located at the opening in the top plate 11, thereby connecting the first grass collection channel 2 with the interior of the cutter head 1. When the rear grass discharge mode is selected, the movable grass collection cover 6 is used to cover the opening on the side plate 12 at a preset position, and the cut grass is discharged rearward through the first grass collection channel 2. When the side grass discharge mode is selected, the movable grass collection cover 6 can open the opening on the side plate 12. By providing a side guide groove 7 at the opening of the side plate 12, the side guide... The side guide groove of the trough plate 7 communicates with the opening of the side plate 12. Simultaneously, the end of the side guide groove plate 7 can cover the opening on the top plate 11, thereby blocking the first grass collection channel 2 from communicating with the inside of the cutter head 1. This allows the cut grass to enter the side guide groove plate 7 through the opening of the side plate 12, achieving side grass discharge. When the grass shredding mode is selected, the movable grass collection cover plate 6 can open the opening on the side plate 12. The grass shredding cover plate 8 is located at the opening of the side plate 12 and can cover the openings of the top plate 11 and the side plate 12, thus closing the opening on the cutter head 1 and achieving grass shredding within the cutter head 1. This application integrates three grass discharge methods, and the switching between each method is flexible and reliable, allowing users to select different grass discharge methods according to actual conditions.

[0061] In addition, please refer to Figures 1 to 3 A second grass collection channel 3 is connected to the second end of the first grass collection channel 2. The two are detachably connected. The second grass collection channel 3 can be connected to a grass collection box 4. When the grass is discharged in the rear, the grass shreds can enter the grass collection box 4 through the first grass collection channel 2 and the second grass collection channel 3.

[0062] In some embodiments, the second grass collection channel 3 can be mounted on the frame 01 of the lawnmower via a limiting bracket 02. Please refer to... Figure 3 The specific setting between the frame 01 and the limit switch can refer to the existing technology, and will not be repeated here. Just make sure that the first grass collection channel 2 and the second grass collection channel 3 do not interfere with the tires or other surrounding parts when they move.

[0063] The second grass collection channel 3 can be connected to the first grass collection channel 2 by plugging in, that is, one end of the second grass collection channel 3 is plugged into the second end of the first grass collection channel 2, and several tensioning devices 5 are set on the outer periphery of the plugging position, so that the first grass collection channel 2 and the second grass collection channel 3 can have a stable connection effect.

[0064] Furthermore, the tensioning device 5 can be distributed around the first grass collection channel 2 and the second grass collection channel 3, please refer to... Figure 4 The tensioning device 5 includes a first fixing member 51, a second fixing member 52, and a tensioning strip 53. The first fixing member 51 is fixed to the first grass collection channel 2, and the second fixing member 52 is fixed to the second grass collection channel 3. The tensioning strip 53 connects the first fixing member 51 and the second fixing member 52. The tensioning force of the tensioning strip 53 ensures a tight connection between the first grass collection channel 2 and the second grass collection channel 3, guaranteeing connection stability. In simple terms, the first fixing member 51 and the second fixing member 52 provide connection points for the first grass collection channel 2 and the second grass collection channel 3, and the tensioning strip 53 stably connects the first grass collection channel 2 and the second grass collection channel 3 through these two connection points.

[0065] Furthermore, the first fixing member 51 and the second fixing member 52 can be as follows: Figure 5 The first type of screw fastener shown can also be as follows: Figure 7 The second type of screw fastener shown, in both types, requires the head to be pre-embedded in the channel wall of the first grass collecting channel 2 and the second grass collecting channel 3, with the shank of the screw fastener protruding from the channel wall, thus providing a stable connection point for the tensioning strip 53. The first type of screw fastener includes a screw 514, the head of which has a double-layer washer 511. Please refer to... Figure 6 The double-layer gasket 511 can be clamped on both sides of the channel wall. The shank of the screw 514 is located on the outside of the channel, and a bushing 512 is fitted around the outer periphery of the shank. The tensioning strip 53 has limiting holes 54 at both ends that fit around the outer periphery of the bushing 512, thereby providing tension force to bring the two fasteners closer together. The shank of the screw 514 is provided with a cap nut 513 to prevent the tensioning strip 53 from falling off the fastener.

[0066] The second type of fastener includes T-screw 521, please refer to... Figure 7 and Figure 8 The head of the T-screw 521 is embedded in the channel wall, thus fixing the T-screw 521 in place. A locking nut 522 is provided on the T-screw 521 to prevent the tensioning strip 53 from falling off the fixing member. Alternatively, a bushing 512 can be provided on the shank of the T-screw 521 to prevent the tensioning strip 53 from directly rubbing against the shank of the T-screw 521. It should be noted that the arrangement of the first fixing member 51 and the second fixing member 52, including but not limited to the two types of screw fasteners described above, only needs to ensure a stable connection point for the tensioning strip 53, thereby enabling a stable and detachable connection between the first grass collection channel 2 and the second grass collection channel 3, all of which fall within the scope of protection of this application.

[0067] In this embodiment, the outer wall of the first grass collection channel 2 is provided with a rotating part 61 for the grass collection cover plate 6 to move. Please refer to... Figure 9 and Figure 10The rotating component 61 includes a fixed bracket 611, a support shaft 613, and a torsion spring 614. The fixed bracket 611 is fixedly mounted on the first grass collection channel 2, and side brackets 612 extending or protruding to the same side are provided at both ends of the fixed bracket 611. The support shaft 613 is mounted on the two side brackets 612 at both ends, and can be fixedly connected or rotatably connected; no further restrictions are imposed here. The grass collection cover 6 can be rotatably connected to the support shaft 613, and an interference fit can be used to reduce the rotational friction between the grass collection cover 6 and the support shaft 613, thereby ensuring that the grass collection cover 6 can rotate stably about the axis of the support shaft 613.

[0068] A torsion spring 614 is sleeved on the outer periphery of the support shaft 613. One end of the torsion spring 614 is fixedly connected to the fixed bracket 611 or the first grass collection channel 2, and the other end is connected to the grass collection cover plate 6. The torsion spring 614 has an initial torque, which is used to provide the grass collection cover plate 6 with the torque to rotate facing the opening on the side plate 12. When the rear grass discharge method is adopted, the grass collection cover plate 6 has a pressing force pressed against the opening of the side plate 12 under the action of the torsion spring 614, preventing the grass fragments from being accidentally discharged through the opening of the side plate 12. When using the side-discharge method, the grass collection cover 6 can also abut against the side guide plate 7. The torsional grass collection cover 6 can provide the side guide plate 7 with the clamping force pressing it against the cutter head 1, thereby improving the installation stability of the side guide plate 7. Similarly, when using the grass shredding method, the grass collection cover 6 can abut against the grass shredding cover 8. The torsional grass collection cover 6 can provide the grass shredding cover 8 with the clamping force pressing it against the cutter head 1, thereby improving the installation stability of the grass shredding cover 8.

[0069] Please refer to Figure 2 In some embodiments, the first end of the first grass collection channel 2 is further provided with an extension end 21 extending toward the cutter disc 1. The extension end 21 abuts against the cutter disc 1, and the extension end 21 has an inner contour that matches the outer contour of the cutter disc 1, so that the extension end 21 and the cutter disc 1 can abut against each other stably and have a certain sealing effect to prevent grass clippings from being discharged from the gap between the first grass collection channel 2 and the cutter disc 1.

[0070] A side opening 22 corresponding to the opening on the side plate 12 is provided on the extension end 21, and the grass collection cover plate 6 can be closed by covering the side opening 22 of the extension end 21 at the above-mentioned preset position.

[0071] When using the side guide plate 7 and the straw cover plate 8, the ends of the side guide plate 7 and the straw cover plate 8 need to cover the openings on the top plate 11 to prevent straw from entering the first straw collection channel 2 through the openings on the top plate 11. To further improve the stability of the side guide plate 7 and the straw cover plate 8, a slot 71 can be provided at the end of the side guide plate 7 and / or the straw cover plate 8 that covers the openings on the top plate 11. Please refer to [reference needed]. Figure 14 and Figure 16The top plate 11 is provided with a lug 13 that engages with the slot 71. Please refer to [reference needed]. Figure 15 and Figure 17 The side guide plate 7 and the grass clipping cover plate 8 can be hung on the support lug 13, and together with the pressing effect of the grass collection cover plate 6, the side guide plate 7 and the grass clipping cover plate 8 can be stably set.

[0072] Furthermore, a locking assembly 62 is also provided on the grass collection cover 6. The locking assembly 62 and the rotating part 61 are respectively located on both sides. Please refer to [reference needed]. Figure 9 , Figure 11 and Figure 12 The locking assembly 62 includes a locking tongue 622 and a return spring 624 connected to the locking tongue 622. The locking tongue 622 can be embedded in the grass collection cover 6. The end of the locking tongue 622 is provided with a hook-shaped part 623, which is exposed relative to the grass collection cover 6. One end of the return spring 624 abuts against the grass collection cover 6, and the other end abuts against the grass collection cover 6, thereby providing the locking tongue 622 with an outward elastic force. When the movable grass collection cover 6 rotates to the opening of the side plate 12, the hook-shaped part 623 can extend into the side opening 22 of the extension end 21, and the hook-shaped part 623 can engage with the inner edge of the side opening 22, thereby preventing the grass collection cover 6 from detaching from the extension end 21 of the first grass collection channel 2. In conjunction with the rotating assembly on the other side of the grass collection cover 6, a stable connection structure is formed between the grass collection cover 6 and the extension end 21. When the movable locking tongue 622 is compressed inward, it can disengage from the inner edge of the side opening 22, thereby disengaging from the engagement and allowing the grass collection cover 6 to move freely again. In addition, the locking assembly 62 also includes a locking pressure plate 621 that covers the locking tongue 622 and the return spring 624, providing a relatively sealed space for the locking tongue 622 and the return spring 624, isolating them from interference from external weeds.

[0073] This application also provides a lawnmower, including the aforementioned grass-removing mechanism, as well as components such as an engine, a walking mechanism, a handle, and a control unit, which will not be described in detail here, and all fall within the protection scope of this application.

[0074] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0075] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A grass-clearing mechanism, characterized in that, include: The cutter head assembly includes a cutter head (1) formed by a side plate (12) and a top plate (11), wherein the top plate (11) and the side plate (12) are provided with openings; The first grass collection channel (2) has its first end covering at least the opening on the top plate (11) so that the first grass collection channel (2) communicates with the interior of the cutter head (1); A grass collection cover (6) is movably mounted on the first grass collection channel (2) via a rotating component (61) located on the outer wall of the first grass collection channel (2). The movable grass collection cover (6) covers the opening on the side plate (12) at a preset position and opens the opening on the side plate (12) at other positions besides the preset position. The rotating component (61) includes a fixed bracket (611), a support shaft (613), and a torsion spring (614). The fixed bracket (611) is fixedly mounted on the first grass collection channel (2), and the fixed bracket (611) has side brackets (612) protruding to the same side at both ends. The two ends of the shaft (613) are set on the two side supports (612). The grass collection cover (6) is rotatably connected to the support shaft (613) so that the grass collection cover (6) rotates about the axis of the support shaft (613). The torsion spring (614) is sleeved on the outer periphery of the support shaft (613). One end of the torsion spring (614) is fixedly connected to the fixed bracket (611) or the first grass collection channel (2), and the other end is connected to the grass collection cover (6). The torsion spring (614) has an initial torque to provide the grass collection cover (6) with a torque to rotate facing the opening on the side plate (12). A side guide plate (7) is provided at the opening of the side plate (12), including a side guide groove communicating with the opening of the side plate (12). The end of the side guide plate (7) extends toward the cutter head (1) and at least covers the opening on the top plate (11). A straw shredding cover (8) is provided at the opening of the side panel (12) and at least covers the openings of the top panel (11) and the side panel (12); The grass collection cover (6) abuts against the side guide plate (7) or the grass shredder cover (8), and the grass collection cover (6) with torque is used to provide the side guide plate (7) or the grass shredder cover (8) with a pressing force on the cutter head (1).

2. The grass-removing mechanism according to claim 1, characterized in that, The second end of the first grass collection channel (2) is connected to the second grass collection channel (3), and the second grass collection channel (3) is connected to the grass collection box (4).

3. The grass-removing mechanism according to claim 2, characterized in that, The second grass collection channel (3) is mounted on the frame (01) of the lawnmower via a limiting bracket (02). The second grass collection channel (3) is connected to the first grass collection channel (2), and several tensioning devices (5) are provided on the outer periphery of the first grass collection channel (2) and the second channel to connect the two.

4. The grass-removing mechanism according to claim 3, characterized in that, The tensioning device (5) includes a first fixing member (51) fixed on the first grass collection channel (2), a second fixing member (52) fixed on the second grass collection channel (3), and a tensioning rubber strip (53) connecting the first fixing member (51) and the second fixing member (52). The tensioning rubber strip (53) has limiting holes (54) at both ends that are sleeved on the outer periphery of the first fixing member (51) and the second fixing member (52). The tensioning rubber strip (53) has a tensioning force that brings the first fixing member (51) and the second fixing member (52) closer to each other.

5. The grass-clearing mechanism according to claim 1, characterized in that, The first end of the first grass collection channel (2) is provided with an extension end (21) extending toward the cutter disc (1), the extension end (21) abuts against the cutter disc (1), and a side opening (22) corresponding to the opening on the side plate (12) is provided on the extension end (21), and the grass collection cover plate (6) covers the side opening (22) at the preset position.

6. The grass-clearing mechanism according to claim 1, characterized in that, The side guide plate (7) and / or the grass shred cover plate (8) covering the opening on the top plate (11) are provided with a slot (71), and the top plate (11) is provided with a lug (13) that engages with the slot (71).

7. The grass-removing mechanism according to claim 5, characterized in that, The grass collection cover (6) is provided with a locking assembly (62), the locking assembly (62) includes a locking tongue (622) and a return spring (624) connected to the locking tongue (622). The other end of the return spring (624) abuts against the grass collection cover (6). The locking tongue (622) includes a hook-shaped part (623) that extends into the side opening (22) and engages with the inner edge of the side opening (22) to restrict the grass collection cover (6) from disengaging from the extension end (21). The movable locking tongue (622) has a position where the hook-shaped part (623) disengages from the inner edge of the side opening (22).

8. A lawnmower, characterized in that, Includes the grass removal mechanism as described in any one of claims 1-7.

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