Cutting mechanism and lawnmower

Abstract

The present application relates to the technical field of outdoor working equipment, in particular to a cutting mechanism, an intelligent mower and a mower. The cutting mechanism comprises a connecting assembly and a cutter head. The connecting assembly is connectable to a motor output shaft. The cutter head is detachably connected to the connecting assembly. The mower has a motor with a motor output shaft. The mower further comprises the cutting mechanism or the cutter head. The cutter head is connected to the motor output shaft through detachable connection to the connecting assembly. The cutting mechanism provided by the present application has the advantages of convenient and quick assembly and replacement, high efficiency and good safety. The mower provided by the present application has the advantages of convenient and quick assembly and replacement, high efficiency and good safety of the cutter head of the cutting mechanism.

Description

Technical Field

[0001] This invention relates to the field of outdoor work equipment technology, specifically to a cutting mechanism and a lawnmower. Background Technology

[0002] A lawnmower is a mechanical tool used for trimming lawns and vegetation. Intelligent lawnmowers are widely used because they can autonomously complete lawn mowing without direct manual control or operation, and also offer advantages such as low power consumption, low noise, and a compact and aesthetically pleasing design. Intelligent lawnmowers feature automatic walking capabilities and a certain degree of climbing ability. They can automatically return to their charging station and perform safety and battery level checks, making them particularly suitable for lawn mowing and maintenance in home gardens and public green spaces.

[0003] The related technology discloses a quick-connect lawnmower blade, wherein a drive shaft extends from the proximal end of a base into a blade connector base. The blade connector base is a partially hollow cylinder, and a bolt is used to connect the blade connector base to the drive shaft through the distal end of the base. The blade remains close to the blade connector base and has a receiving hole and two alignment holes symmetrically arranged on both sides of the receiving hole along the length of the blade. The receiving hole is located at the intersection of the longitudinal centerline and the transverse centerline of the blade. The blade connector base has a protrusion extending away from its distal end. The receiving hole of the blade receives the protrusion of the base when the blade is aligned with the blade connector base. The retaining bolt passes through the receiving hole and enters the distal center of the blade connector base, clamping the retaining bolt onto the blade connector base to keep the blade near or in contact with the blade connector base.

[0004] The aforementioned quick-connect lawnmower blades use a screw connection to connect the various components. The blade connector base is bolted to the drive shaft, and the blade is bolted to the blade connector base. The blade rotates under the drive shaft to perform the cutting operation. Because the components are assembled using bolts, the assembly process is cumbersome, resulting in poor assembly convenience and replacement efficiency. Furthermore, the bolts may loosen or fall off, posing a certain safety hazard during blade use. Summary of the Invention

[0005] The purpose of this invention is to provide a cutting mechanism and a lawnmower, which have the advantages of being easy and quick to assemble and replace, highly efficient and safe.

[0006] The cutting mechanism provided by this invention includes:

[0007] A connecting component, the connecting component being configured to be connected to the motor output shaft; and

[0008] A cutter head, which is detachably connected to the connecting assembly.

[0009] In one embodiment, the connecting assembly includes a first connector that can be coupled to the motor output shaft and a movable member that can be movably mounted on the first connector; and the movable member has a first state and a second state;

[0010] The connecting component and the cutter head are configured such that when the movable part is in a first state, they are locked together and can be detached when the movable part is in a second state.

[0011] In one embodiment, the movable element is configured to move away from the cutter head when transitioning from the first state to the second state.

[0012] In one embodiment, the movable element is configured to move toward a direction close to the rotation center of the connecting assembly when transitioning from a first state to a second state.

[0013] In one embodiment, the movable element is configured to be able to be directly driven by a finger to translate and thus transition from a first state to a second state.

[0014] In one embodiment, the first connector includes a connecting plate with a shaft hole and an operating slide.

[0015] The connecting assembly can be connected to the motor output shaft through the shaft hole; the operating slide extends radially along the shaft hole on the surface of the connecting plate; the movable member is movably placed in the operating slide and configured to be operablely connected to or detached from the cutter head.

[0016] In one embodiment, the first connector further includes a sleeve formed by the shaft hole extending along its axis; the connecting assembly further includes a biasing member connected between the sleeve and the movable member, the biasing member being configured to cause the movable member to always have a tendency to bias toward the cutter head.

[0017] In one embodiment, the connecting assembly includes a first connector, the first connector including a connecting plate having a shaft hole, the first connector being connected to the motor output shaft through the shaft hole;

[0018] The cutter head includes a mounting plate for mounting the blades, and the mounting plate and the connecting plate are coaxial and detachably connected.

[0019] In one embodiment, the first connector further includes a connecting wall constructed on the connecting plate with the center of the shaft hole as its axis, and the cutter head further includes a cutter head wall constructed on the mounting plate with the center of the shaft hole as its axis, wherein one of the cutter head wall and the connecting wall is detachably sleeved on the outside of the other.

[0020] In one embodiment, the connecting wall has a first connecting portion protruding or recessed from its sidewall surface, and the cutter head wall has a second connecting portion protruding or recessed from its sidewall surface, wherein one of the first connecting portion and the second connecting portion is detachably mounted in the other.

[0021] In one embodiment, both the first connecting portion and the second connecting portion extend a certain length along the axial direction of the shaft hole, and the top or bottom surface of the first connecting portion and the second connecting portion is inclined relative to the axis of the shaft hole.

[0022] In one embodiment, the width dimensions of the first connecting portion and the second connecting portion are gradually changed.

[0023] In one embodiment, the connection component further includes a movable element;

[0024] The first connector further includes an operating slide, which extends radially along the shaft hole onto the surface of the connecting plate. The movable member is movably placed in the operating slide and configured to be operably connected to or detached from the cutter head wall.

[0025] In one embodiment, the first connector includes two connecting vertical walls that are spaced apart from each other, and the cutter head vertical wall is detachably fitted onto the outside of the two connecting vertical walls;

[0026] The connecting assembly further includes a second connector, which includes a cover plate that is coaxial with and detachably connected to the connecting plate, and the cover plate is disposed between the two connecting walls.

[0027] In one embodiment, the second connector further includes a cover plate wall with the center of the shaft hole as its axis and constructed on the cover plate, the cover plate wall having a third connecting portion protruding from its top sidewall; the connecting plate has a connecting hole with the center of the shaft hole as its axis and located inside the connecting wall, the third connecting portion passing through the connecting hole and being detachably snapped into the outer edge.

[0028] The cutting mechanism provided by the present invention has a connecting component that can be connected to the motor output shaft of a lawnmower, and a blade disc that is detachably connected to the connecting component. When assembling, replacing or repairing the blade disc, the operator can remove the blade disc from the connecting component by hand or assemble the blade disc onto the connecting component by hand, eliminating the need for additional removal and assembly tools. It has the advantages of convenient and quick assembly and replacement, high efficiency and good safety.

[0029] Another object of the present invention is to provide a lawnmower having a motor having a motor output shaft, the lawnmower further including a cutting mechanism as described above; and the blade is connected to the motor output shaft by being detachably snapped into a connecting assembly.

[0030] Another object of the present invention is to provide an intelligent lawnmower that can autonomously move within a preset area and perform lawn mowing operations; the intelligent lawnmower has a motor with a motor output shaft, and the lawnmower also includes the cutting mechanism described above; and the blade is connected to the motor output shaft by being detachably snapped into a connecting assembly.

[0031] The beneficial effects of the lawnmower provided by this invention compared to the prior art are the same as the beneficial effects of the blade and cutting mechanism provided by this invention compared to the prior art, and will not be repeated here. Attached Figure Description

[0032] Figure 1 This is an exploded view of a cutting mechanism according to an embodiment of the present invention;

[0033] Figure 2a This is a first exploded view of a connection assembly according to an embodiment of the present invention, wherein the biasing element is omitted;

[0034] Figure 2b This is a second exploded view of a connection assembly according to an embodiment of the present invention, wherein the biasing element is omitted;

[0035] Figure 3 This is a schematic diagram of a cutter head assembly according to an embodiment of the present invention;

[0036] Figure 4 This is an assembly diagram of a cutting mechanism according to an embodiment of the present invention;

[0037] Figure 4a yes Figure 4 AA sectional view, in which the active part card access card slot is shown;

[0038] Figure 4b yes Figure 4a An enlarged view of section X, showing the card slot where the active part card is inserted;

[0039] Figure 4c yes Figure 4a A CC sectional view showing the card slot into which the active part card is inserted;

[0040] Figure 5a yes Figure 4 A BB cross-sectional view, showing the mating surface of the first connecting part and the second connecting part;

[0041] Figure 5b yes Figure 5a An enlarged view of the Y-section shows the mating surface of the first connecting part and the second connecting part;

[0042] Figure 6 This is an assembly diagram of a cutting mechanism according to an embodiment of the present invention;

[0043] Figure 6a yes Figure 6 The DD sectional view shows the movable part disengaging from the snap-fit ​​slot;

[0044] Figure 6b yes Figure 6a An enlarged view of section Z, showing the movable part detached from the snap-fit ​​slot;

[0045] Figure 6c yes Figure 6a An enlarged view of the EE section, showing the movable part detached from the slot;

[0046] Figure 7 This is a schematic diagram of a lawnmower according to an embodiment of the present invention;

[0047] Figure 7a yes Figure 7 A schematic diagram of a lawnmower with its bottom facing upwards. Detailed Implementation

[0048] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are only for illustrating the essential spirit of the technical solution of the present invention.

[0049] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0050] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0051] Reference Figure 1As shown, the cutting mechanism 100 provided in this embodiment includes a connecting assembly 10 and a cutter head assembly 20. The connecting assembly 10 is connectable to the motor output shaft 200. The cutter head assembly 20 includes a cutter head 21 and a plurality of blades 22, which are mounted on the cutter head 21 and spaced apart sequentially along the circumference of the cutter head 21. The cutter head 21 is detachably connected to the connecting assembly 10, and subsequently, the cutter head 21 is connected to the motor output shaft 200 via this detachable connection to the connecting assembly 10.

[0052] Reference Figures 2a-2b As shown, the connecting assembly 10 includes a first connector 11, a second connector 12, two movable parts 13, and two biasing parts 14. The first connector 11 can be connected to the motor output shaft 200, and the second connector 12 is detachably connected to the first connector 11.

[0053] Reference Figures 2a-2b ,as well as Figure 4 and Figure 6 As shown, in general, the cutting mechanism 100 provided in this embodiment includes a first connecting member 11 comprising a connecting plate 111 with a shaft hole 111a and a connecting wall 112 oriented around the center of the shaft hole 111a and constructed on the connecting plate 111. The second connecting member 12 comprises a cover plate 121 with a shaft hole 121a and a cover plate wall 122 oriented around the center of the shaft hole 121a and constructed on the cover plate 121. The cutter head 21 comprises a mounting plate 211 with a mounting hole 211a and a cutter head wall 212 oriented around the center of the mounting hole 211a and constructed on the mounting plate 211. The shaft holes 111a of the connecting plate 111, 121a of the cover plate 121, and 211a of the mounting plate 211 are all coaxial. The motor output shaft 200 passes through the connecting shaft hole 111a and the shaft hole 121a in sequence. The first connecting member 11 and the second connecting member 12 are confined within the mounting hole 211a. Preferably, the connecting plate 111, the cover plate 121, and the mounting plate 211 are all thin-plate structures, the connecting vertical wall 112 and the cover plate vertical wall 122 are both arc-shaped thin-walled structures, and the cutter head vertical wall 212 is an annular thin-walled structure.

[0054] In this embodiment, the connecting plate 111 has two connecting vertical walls 112 arranged radially and relatively spaced along the shaft hole 111a, and the cover plate 121 has two cover plate vertical walls 122 arranged radially and relatively spaced along the shaft hole 121a. The two connecting vertical walls 112 and the two cover plate vertical walls 122 correspond one-to-one.

[0055] Along the radial direction of the motor output shaft 200, the cover plate vertical wall 122, the connecting vertical wall 112, and the cutter head vertical wall 212 are arranged sequentially from the inside to the outside. The outer edge of the connecting plate 111 is surrounded by the cutter head vertical wall 212, and the outer surface of the connecting plate 111 is flush with the top of the cutter head vertical wall 212. The entire first connecting member 11 is wrapped inside the cutter head vertical wall 212. The shaft hole 121a of the cover plate 121 is flush with the shaft end of the motor output shaft 200. The cover plate 121 covers the inner side of the two connecting vertical walls 112, and the entire second connecting member 12 is wrapped inside the first connecting member 11. Thus, in the radial direction of the motor output shaft 200, the first connecting member 11 wraps around the second connecting member 12, and the cutter head 21 wraps around the first connecting member 11. Along the axial direction of the motor output shaft 200, the entire cutting mechanism 100 is kept as flush as possible at the extreme positions at both ends of the axial direction, so that the entire cutting mechanism 100 is more compact, precisely assembled and highly safe to use.

[0056] In this embodiment, the cover plate vertical wall 122 and the connecting vertical wall 112 can be spaced apart or in contact with each other. The connecting vertical wall 112 and the cutter head vertical wall 212 are detachably sleeved, and the inner and outer positions of the connecting vertical wall 112 and the cutter head vertical wall 212 can be interchanged according to the actual design.

[0057] In this embodiment, in the most preferred configuration, the rotation center of the motor output shaft 200 coincides with the common axis of the shaft hole 111a, the shaft hole 121a, and the mounting hole 211a.

[0058] The following is a detailed description of the components of the cutting mechanism provided in the embodiments of the present invention.

[0059] Reference Figures 2a-2bAs shown, the first connecting member 11 is preferably an integrally formed structure. The first connecting member 11 includes a connecting plate 111 and a sleeve 113, as well as an operating slide 114, two connecting holes 115, and two connecting vertical walls 112. The connecting plate 111 is a thin disc plate with a shaft hole 111a. The sleeve 113 and the shaft hole 111a are coaxially and perpendicularly disposed on the connecting plate 111. The motor output shaft 200 passes through the connecting plate 111 and the sleeve 113 sequentially from the side opposite to the sleeve 113. The motor output shaft 200 and the sleeve 113 are preferably connected by an interference fit. The two slide sidewalls are arranged relatively parallel and spaced apart along the radial direction of the sleeve 113 on both sides of the sleeve 113, forming the operating slide 114. Since the sleeve 113 is located between the side walls of the two slideways, along the length of the operating slideway 114, the sleeve 113 divides the operating slideway 114 into two partition slideways radiating outwards radially along the sleeve 113. The outer ends of the two partition slideways are open, and each of the four side wall tops of the two partition slideways has a first protrusion 114a protruding towards the center line of the slideway. Furthermore, two first connecting posts 113a protruding outwards radially along the outer wall of the sleeve 113 are provided, and the two first connecting posts 113a are located within the two partition slideways respectively.

[0060] Both connecting vertical walls 112 are symmetrically spaced radially along the sleeve 113 with the center of the shaft hole 111a of the connecting plate 111 as the axis. The two connecting vertical walls 112 are correspondingly arranged with the two slide side walls, and the two connecting vertical walls 112 are located outside the two slide side walls. In this embodiment, the two ends of the connecting vertical walls 112 are closedly connected to the two ends of the slide side walls, and the two connecting vertical walls 112 and the two slide side walls are closedly connected to form two semi-circular closed structures.

[0061] The connecting wall 112 can be installed upright on the connecting plate 111 or inclined on the connecting plate 111. The connecting wall 112 can be inclined as a whole relative to the connecting plate 111, or the side wall of the connecting wall 112 that matches the cutter head wall 212 can be inclined relative to the connecting plate 111, while the other side wall away from the cutter head wall 212 can be set perpendicular to the connecting plate 111.

[0062] Each connecting wall 112 is provided with a first connecting portion 112a, which is a protrusion or recess on the side wall surface of the connecting wall 112. The first connecting portion 112a extends a certain length along the axial direction of the shaft hole 111a. In this embodiment, the first connecting portion 112a is a strip-shaped protrusion. The width of the strip-shaped protrusion gradually changes along the axial direction of the shaft hole 111a, and the top surface of the strip-shaped protrusion is inclined relative to the axis of the shaft hole 111a to facilitate alignment and improve the coaxiality of the installation.

[0063] Specifically, along the power output direction of the motor output shaft 200, the width of the strip-shaped protrusion gradually decreases. In this embodiment, each connecting wall 112 is provided with two first connecting portions 112a, which are spaced apart along the length extension direction of the connecting wall 112. Two connecting walls 112 are provided with four first connecting portions 112a, which are rotationally symmetrical about the connecting plate 111. In this embodiment, the first connecting portions 112a are disposed on the outer surface of the sidewall of the connecting wall 112.

[0064] Both connecting holes 115 are symmetrically spaced radially along the sleeve 113 with the center of the shaft hole 111a of the connecting plate 111 as the axis. The two connecting holes 115 are parallel to and located inside the two connecting walls 112. The two connecting holes 115 penetrate the thickness of the connecting plate 111 and are located within the two enclosed structures described above. In this embodiment, the outer edges of the connecting holes 115 are chamfered or inclined on the side of the connecting plate 111 near the motor.

[0065] The movable component 13 is a one-piece molded structure. Two movable components 13 are slidably installed in two separating slides, one-to-one, and the movable components 13 are configured to slidably translate along the length of the separating slides. In this embodiment, the movable component 13 has a first state and a second state, and can be driven by a finger to translate between the first and second states. When the movable component 13 is in the first state, the connecting assembly 10 and the cutter head 21 are connected and locked together via the movable component 13. When the movable component 13 is in the second state, the lock between the connecting assembly 10 and the cutter head 21 is released, and they can be detached from each other.

[0066] In this embodiment, when the movable member 13 transitions from the first state to the second state, it moves in a direction away from the cutter head 21. Preferably, the direction away from the cutter head is the direction towards the rotation center of the connecting assembly 10. More preferably, when the movable member 13 transitions from the first state to the second state, it translates in a radial direction towards the rotation center of the connecting assembly 10.

[0067] Each movable component 13 includes a movable part 131 and an associated part 132 connected to the movable part 131. The movable part 131 includes a body 131a, an operating handle 131c, and two second protrusions 131b. The two second protrusions 131b are arranged opposite each other on both sides of the body 131a along its width direction, and each of the two second protrusions 131b corresponds to one of the two first protrusions 114a, thereby confining the movable part 131 within the dividing slide. The operating handle 131c is located at the top of the body 131a, facilitating the operator's operation of the movable component 13. The body 131a has a proximal end and a distal end. The proximal end is located near the sleeve 113, and the distal end is located near the opening of the dividing slide. A second connecting post 131d is provided on the side of the proximal end facing the sleeve 113, and the associated part 132 connects to the distal end.

[0068] Reference Figures 4a-4c As shown in 6a-6c, the biasing member 14 is connected between the first connecting post 113a and the second connecting post 131d. The two biasing members 14 are correspondingly arranged between the sleeve 113 and the two movable parts 131. Preferably, the biasing members 14 are configured such that the movable parts 13 always tend to bias the cutter head 21 along the centrifugal direction of the cutter head 21, so that its biasing direction is consistent with the centrifugal direction of the cutter head 21. Thus, under the biasing force of the two biasing members 14, the two movable parts 131 respectively drive the two connecting parts 132 to slide out from the openings of the two separating slides and enter the cutter head vertical wall 212. Alternatively, under the action of external force, the two movable parts 131 respectively drive the two connecting parts 132 to slide in from the openings of the two separating slides and disengage from the cutter head vertical wall 212.

[0069] As a preferred embodiment, the cutter head 21 is coaxial with the connecting assembly 10, and the cutter head 21 is detachably connected to the periphery of the connecting assembly 10. Therefore, the centrifugal direction of the cutter head 21 is away from the rotation center axis of the motor output shaft 200, the connecting assembly 10, and the cutter head assembly 20.

[0070] In this embodiment, the biasing member 14 is preferably an elastic member, and the elastic member is preferably a spring. It should be understood that the movable member 3 itself can be elastic, and the biasing member 14 can be omitted accordingly. In this embodiment, the biasing member 14 is connected between the sleeve 113 and the movable member 13, which is located on the inner side of the cutter head 21. It should be understood that the movable member 13 can be located on the outer side of the cutter head 21, providing a biasing force towards the cutter head 21 from the outside in. In this embodiment, the biasing member 14 is configured such that the movable member 13 always tends to bias the cutter head 21 in the centrifugal direction. It should be understood that the biasing member 14 can also be configured such that the movable member 13 always tends to bias the cutter head 21 in the centrifugal direction away from the cutter head 21. The arrangement of the movable member 13 and the biasing direction of the biasing member 14 can be combined and selected according to specific requirements.

[0071] In this embodiment, the biasing member 13 is connected between the first connecting post 113a and the second connecting post 131d. It should be understood that there are various ways to fix both ends of the biasing member 14. For example, a fixing plate can extend from the inner wall or bottom wall of the slide rail, and the end of the biasing member 14 near the sleeve 113 can be fixed to the fixing plate. In this embodiment, the end of the biasing member 14 near the sleeve 113 is connected to the sleeve 113, and the extending direction of the biasing member 14 is consistent with the radial direction of the sleeve 113, to ensure that the biasing member 14 provides a biasing tendency in the same centrifugal direction as the cutter head 21.

[0072] Reference Figures 2a-2b As shown, the second connecting member 12 is preferably an integrally formed structure. The second connecting member 12 includes a cover plate 121 and two cover plate vertical walls 122, as well as two operating ports 123 penetrating the thickness of the cover plate 121. The cover plate 121 is a disc plate with a shaft hole 121a. The cover plate 121 and the connecting plate 111 are coaxially arranged. The motor output shaft 200 passes through the connecting plate 111, the sleeve 113, and the cover plate 121 sequentially from the side opposite to the sleeve 113. The outer edge of the shaft hole 121a of the cover plate 121 is inclined, and the outer edge of the shaft end of the motor output shaft 200 is also inclined. The outer edge of the shaft hole 121a of the cover plate 121 and the outer edge of the shaft end of the motor output shaft 200 are adapted to fit together. The inclined surface guides the cover plate 121 to fit onto the shaft end portion of the motor output shaft 200, facilitating accurate alignment of the components with the shaft center during assembly and improving assembly accuracy.

[0073] Both cover plate vertical walls 122 are symmetrically spaced radially along the sleeve 113 with the center of the shaft hole 121a of the cover plate 121 as the axis. The two cover plate vertical walls 122 are engaged with the two connecting holes 115 in a one-to-one correspondence. The two cover plate vertical walls 122 and the two connecting vertical walls 112 are also located within the two enclosed structures described above, thus the second connecting member 12 is wrapped inside the first connecting member 11. Each of the two cover plate vertical walls 122 has a third connecting portion 122a protruding along the top sidewall of the cover plate vertical wall 122. The cover plate vertical wall 122 passes through the connecting hole 115 via the third connecting portion 122a and engages with the outer edge of the connecting hole 115. Since the third connecting portion 122a protrudes from the thickness direction of the cover plate vertical wall 122, the width of the connecting hole 115 is equal to or greater than the sum of the thickness of the cover plate vertical wall 122 and the height of the third connecting portion 122a, so that the third connecting portion 122a can smoothly pass through the connecting hole 115.

[0074] In this embodiment, the third connecting portion 122a is a continuous connecting portion extending along the length direction of the cover plate vertical wall 122. It should be understood that the third connecting portion 122a may be a plurality of intermittent connecting portions arranged at intervals along the length direction of the cover plate vertical wall 122, or it may only exist as a connecting portion in a localized area. In this embodiment, the third connecting portion 122a protrudes radially inward from the cover plate 121. It should be understood that the third connecting portion 122a may also protrude radially outward from the cover plate.

[0075] The operating port 123 extends through the cover plate 121 along its thickness direction. Two operating ports 123 are symmetrically arranged radially along the cover plate 121 and correspond to the two partition slides. Two operating handles 131c on the two movable parts 13 pass upward through the two operating ports 123. The length direction of the operating ports 123 is consistent with the length direction of the partition slides. The operator operates the operating handles 131c to move them along the length direction of the operating ports 123, thereby driving the connecting part 132 to enter and exit through the opening of the partition slide. In this embodiment, along the circumferential direction of the cover plate 121, the two cover plate walls 122 and the two operating ports 123 are alternately arranged.

[0076] Reference Figure 3 As shown, the cutter head 21 is preferably a one-piece molded structure. In one embodiment, the cutter head 21 includes a mounting plate 211 and two cutter head vertical walls 212. The mounting plate 211 is a disc plate with mounting holes 211a, and the two cutter head vertical walls are annular vertical walls with the center of the mounting holes 211a of the mounting plate 211 as the axis, and one cutter head vertical wall 212 is disposed on the outer side of the other cutter head vertical wall 212 at intervals.

[0077] The inner cutter head wall 212 has a second connecting portion 212a that protrudes or recesses along the sidewall surface of the cutter head wall 212. The second connecting portion 212a extends a certain length along the axial direction of the shaft hole 121a. In this embodiment, the second connecting portion 212a is a strip-shaped groove, and the strip-shaped groove extends from the inner side surface of the cutter head wall 212 towards the outer groove. Along the axial direction of the mounting hole 211a, the width of the strip-shaped groove gradually changes, and the bottom surface of the strip-shaped groove is inclined relative to the axis of the mounting hole 211a to facilitate alignment and improve the coaxiality of the installation.

[0078] Specifically, along the power output direction of the motor output shaft 200, the width of the strip-shaped groove gradually decreases. In this embodiment, four second connecting portions 212a are provided on the inner cutter head wall 212, and the four second connecting portions 212a are spaced apart along the circumferential direction of the cutter head wall 212.

[0079] The inner cutter head vertical wall 212 also has two radially outwardly recessed snap-fit ​​grooves 212b along the mounting hole 211a, which are arranged radially opposite to each other along the mounting plate 211. Furthermore, the two snap-fit ​​grooves 212b correspond to the two openings of the two partition slides. The movable member 13 is configured to operably drive the connecting part 132 through the movable part 131 to slide out of the slide from the opening of the partition slide and engage with the snap-fit ​​groove 212b (e.g., ...). Figures 4a-4b As shown, the movable part is inserted into the card slot, or the associated part 132 is operably driven by the movable part 131 to slide into the slideway from the opening of the partition slideway and disengage from the card slot 212b (as shown). Figures 6a-6b As shown, the movable part is inserted into the snap-fit ​​slot. In this embodiment, the snap-fit ​​slot 212b is configured with a gradually decreasing cross-section along the radially outward direction of the mounting hole 211a. The four second connecting parts 212a are symmetrically arranged on both sides of the two snap-fit ​​slots 212b.

[0080] In this embodiment, the first connecting portion 112a is a strip-shaped protrusion, and the second connecting portion 212a is a strip-shaped groove. It should be understood that one of the first connecting portion 112a and the second connecting portion 212a is a strip-shaped protrusion, and the other is a strip-shaped groove. Furthermore, based on the specific structure of the first connecting portion 112a and the second connecting portion 212a, the gradient direction of the first connecting portion 112a and the second connecting portion 212a is adaptively set to ensure that the mounting plate 211 can be smoothly connected to the connecting plate 111.

[0081] In another embodiment, the two cutter head walls 212 can be integrally formed into one, with no gap between them, to further simplify the structure of the cutter head 21.

[0082] The cutter head vertical wall 212 can be installed upright on the mounting plate 211 or inclined on the mounting plate 211. The cutter head vertical wall 212 can be inclined as a whole relative to the mounting plate 211, or the side wall of the cutter head vertical wall 212 that matches the connecting vertical wall 112 can be inclined relative to the mounting plate 211, while the other side wall away from the cutter connecting vertical wall 112 can be set perpendicular to the mounting plate 211.

[0083] Reference Figures 5a-5bAs shown, the top surface of the strip-shaped protrusion and the bottom surface of the strip-shaped groove are configured such that the mating surface formed by their contact is inclined relative to the axis of the sleeve 113 to achieve precise alignment. For example, in this embodiment, the connecting wall 112 is perpendicular to the connecting plate 111, and the inner cutter head wall 212 is perpendicular to the mounting plate 211. The top surface of the strip-shaped protrusion and the bottom surface of the strip-shaped groove are configured such that the mating surface formed by their contact gradually approaches the central axis of the entire mechanism along the output direction of the motor output shaft 200. This ensures that the mounting plate 211 can be smoothly connected to the connecting plate 111, and at the same time, the alignment accuracy of the mounting plate is improved through this mating surface.

[0084] Alternatively, in other embodiments, the connecting wall 112 gradually tilts towards the center of the connecting plate 111 along the output direction of the motor output shaft 200, and the inner cutter head wall 212 gradually tilts towards the center of the mounting plate 211 along the opposite output direction of the motor output shaft 200. The top surface of the strip-shaped protrusion and the bottom surface of the strip-shaped slot are set as a mating surface formed by the two, gradually moving away from the central axis of the entire mechanism along the output direction of the motor output shaft 200. This ensures that the mounting plate 211 can be smoothly connected to the connecting plate 111, and at the same time improves the alignment accuracy of the mounting plate through this mating surface.

[0085] This embodiment also provides a cutter head 21, which is configured to be detachably connected to the motor output shaft 200. In this embodiment, the cutter head 21 is connected to the motor output shaft 200 by being detachably connected to the aforementioned connecting assembly 10.

[0086] In this embodiment, a plurality of blades 22 are arranged at intervals along the circumference of the cutter head 21. The blades 22 can be fixed and pressed onto the cutter head 21 by means of screws or bolts.

[0087] Reference Figure 7-7a As shown, this embodiment also provides a lawnmower 300, particularly an intelligent lawnmower capable of autonomously moving within a preset area and performing mowing operations. The lawnmower 300 has a motor with a motor output shaft 200, and a connecting plate 111 in the connecting assembly 10 of the cutting mechanism 100 is sleeved onto the motor output shaft 200 via a sleeve 113. Preferably, the sleeve 113 is sleeved onto the motor output shaft 200 by an interference fit. In another embodiment, the sleeve 113 can also be fixedly connected to the motor output shaft 200 by means such as screws. In this embodiment, the blade disc 21 can be connected to the connecting assembly 10 without tools (by hand), and the cutting mechanism 100 can be connected to the motor output shaft 200 without tools.

[0088] The lawnmower provided in this embodiment has a cutting mechanism installed below the blade floating mechanism, which can be driven to float up and down by the blade floating mechanism. Due to its compact structure, the operating space in the axial direction of the drive motor is extremely small, making it difficult to apply force in the axial direction. Moreover, applying force in the axial direction can easily damage the blade floating structure. The structure of this invention can avoid the above problems.

[0089] The cutting mechanism provided in this embodiment has a simple and compact structure, is lightweight and small in size, and can be easily assembled by hand. Inside the cutting mechanism, the moving parts only move radially along the output shaft, and the connection is achieved by the biasing force provided by the biasing component. There is no need to provide other driving components that provide axial power output from the output shaft, and therefore no need to provide an operating space extending axially along the output shaft inside the cutting mechanism. This makes the entire cutting mechanism very compact both radially and axially. The entire cutting mechanism is assembled from thin plates and thin walls, and can be disassembled and assembled without tools.

[0090] The tool-free assembly and disassembly method of the cutting mechanism provided in this embodiment is described in detail below:

[0091] Method 1: Place the lawnmower's blade with the side away from the motor facing upwards. Hold the blade with both hands along its radial direction, with your index fingers at the bottom and supporting the blade upwards. Simultaneously, push the movable parts inwards along the radial direction of the blade with both thumbs, and press the connecting component downwards at the same time. Use your index fingers to apply upward force to detach the connecting component from the blade.

[0092] Method 2: With the axis of the cutting mechanism horizontal, clamp the cutter head with one hand, and use the index finger and thumb of the other hand to push the moving part radially inward along the cutter head at the same time. Apply opposite horizontal forces along the axis of the cutting mechanism with both hands to separate the connecting assembly and the cutter head in the horizontal direction.

[0093] The preferred embodiments of the present invention have been described in detail above, but it should be understood that, if necessary, aspects of the embodiments can be modified to utilize aspects, features, and concepts from various patents, applications, and publications to provide other embodiments.

[0094] In light of the detailed description above, these and other changes can be made to the embodiments. Generally, the terminology used in the claims should not be considered limited to the specific embodiments disclosed in the specification and claims, but should be understood to include all possible embodiments together with the full scope of equivalents enjoyed by these claims.

Claims

1. A cutting mechanism, characterized in that, include: A connecting component, the connecting component being configured to be connected to the motor output shaft; as well as A cutter head, which is detachably connected to the connecting assembly; The connecting assembly includes a first connector and a second connector; The first connector includes a connecting plate with a shaft hole, and the first connector can be connected to the motor output shaft through the shaft hole; The cutter head includes a mounting plate for mounting the blades, the mounting plate and the connecting plate being coaxial and detachably connected. catch; The first connector further includes a connecting vertical wall constructed on the connecting plate with the center of the shaft hole as the axis, and the cutter head further includes a cutter head vertical wall constructed on the mounting plate with the center of the shaft hole as the axis, and one of the cutter head vertical wall and the connecting vertical wall is detachably sleeved on the outside of the other. The second connector includes a cover plate, which is coaxial with and detachably connected to the connecting plate, and the cover plate is disposed between the two connecting walls; The second connector further includes a cover plate wall with the center of the shaft hole as its axis and constructed on the cover plate, the cover plate wall having a third connecting portion protruding from its top sidewall; the connecting plate has a connecting hole with the center of the shaft hole as its axis and located inside the connecting wall, the third connecting portion passing through the connecting hole and being detachably engaged with its outer edge. Along the radial direction of the motor output shaft, the cover plate vertical wall, the connecting vertical wall, and the cutter head vertical wall are arranged sequentially from the inside to the outside; The connecting assembly also includes a movable member, and the first connecting member further includes an operating slide, which extends radially along the shaft hole on the surface of the connecting plate. The movable member is movably placed in the operating slide and configured to be operably connected to or detached from the cutter head wall.

2. The cutting mechanism according to claim 1, characterized in that, The connecting wall structure has protrusions from its sidewall surface. The cutter head has a first connecting portion that is raised or recessed, and a second connecting portion that is raised or recessed by its sidewall surface, wherein one of the first connecting portion and the second connecting portion is detachably mounted in the other.

3. The cutting mechanism according to claim 2, characterized in that, Both the first connecting portion and the second connecting portion extend along the axial direction of the shaft hole for a certain length, and the top or bottom surface of the first connecting portion and the second connecting portion is inclined relative to the axis of the shaft hole.

4. The cutting mechanism according to claim 3, characterized in that, The first connecting part and the second connecting part Width gradient settings.

5. A lawnmower, the lawnmower having a motor, the motor having a motor output shaft, characterized in that, Said cutting The grass cutter also includes a cutting mechanism as described in any one of claims 1-4; and the cutter head of the cutting mechanism is connected to the motor output shaft via the connecting assembly.

6. A smart lawnmower, the smart lawnmower being capable of autonomously moving within a preset area and performing lawnmowing operations; the smart lawnmower having a motor, the motor having a motor output shaft, characterized in that, The lawnmower further includes a cutting mechanism as described in any one of claims 1-4; and the blade of the cutting mechanism is connected to the motor output shaft via the connecting assembly.

Images