A grass cutting assembly and autonomous lawn mower

Abstract

The utility model provides a kind of grass cutting assembly and autonomous lawn mower, install in the inside of grass cutting equipment and include protective shell, actuating mechanism, height adjustment mechanism and guide mechanism, protective shell is set on the bottom plate of grass cutting equipment and extends along vertical direction to form accommodating space in its inboard side;Actuating mechanism is set in accommodating space and includes motor housing and the grass cutting motor installed in the inside of motor housing;And cutting disc is installed on the output shaft of grass cutting motor;Guide mechanism includes the rigid guide structure being set in the inner wall of protective shell and the elastic connecting structure being set on the motor housing, rigid guide structure includes the guide rail projecting to actuating mechanism, and elastic connecting structure is provided with the elastic cantilever for abutting with guide rail facing guide rail;Actuating mechanism is driven by height adjustment mechanism to slide up and down along guide rail under the guidance of rigid guide structure.In the motor housing and protective shell between using guide mechanism, so that when carrying out grass cutting height adjustment, actuating mechanism will not appear inclination, lateral skew.

Description

Technical Field

[0001] This utility model relates to the field of lawn mowing accessories, specifically to a lawn mowing component and a self-propelled lawnmower. Background Technology

[0002] With the development of urbanization, the demand for lawn maintenance in public green spaces and private gardens is constantly increasing. This has led to the widespread use of lawnmowers as an efficient and convenient gardening tool. At the same time, economic growth and the improvement of living standards have made more and more families have higher requirements for the beauty and neatness of lawns, which has also promoted the development of lawnmowers.

[0003] The vertical height of the mowing system relative to the ground determines the mowing height of the lawnmower. The height adjustment of the lawnmower's cutting mechanism is driven by a motor. Existing autonomous lawnmowers have poor noise, vibration, and acoustic roughness performance when adjusting the mowing height, and cannot meet the complex usage needs of users in the daily use of intelligent lawnmowers. Utility Model Content

[0004] The purpose of this invention is to provide a lawn mowing assembly whose guiding mechanism reduces noise and vibration during height adjustment.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] This utility model provides a lawn mowing assembly, installed inside a lawn mowing device, and including a protective shell, an actuator, a height adjustment mechanism, and a guide mechanism. The protective shell is disposed on the bottom plate of the lawn mowing device and extends vertically to form an accommodating space on its inner side. The actuator is disposed within the accommodating space and includes a motor housing and a lawn mowing motor installed inside the motor housing. A cutting disc is mounted on the output shaft of the lawn mowing motor. The guide mechanism includes a rigid guide structure disposed on the inner wall of the protective shell and an elastic connecting structure disposed on the motor housing. The rigid guide structure includes a guide rail protruding towards the actuator, and the elastic connecting structure has an elastic cantilever facing the guide rail for abutting against the guide rail. The actuator is driven by the height adjustment mechanism to slide up and down along the guide rail under the guidance of the rigid guide structure.

[0007] In an optional embodiment, the two ends of the elastic connection structure are recessed into the rigid guide structure to form a clamping part for clamping the rigid guide structure, and there are two elastic cantilever arms distributed on both sides of the clamping part.

[0008] In an optional embodiment, the elastic cantilever is L-shaped, consisting of a base and a bend, with the bend serving to abut against the guide rail.

[0009] In an optional embodiment, connecting grooves are formed at both ends of the elastic connection structure, and outwardly extending ribs are provided on the motor housing, with the ribs inserted into the connecting grooves to fix the elastic connection structure.

[0010] In an optional embodiment, the elastic connection structure has stops above and below the elastic cantilever.

[0011] In an optional implementation, the flexible connection structure is integrally formed with the motor housing.

[0012] In an optional embodiment, the rigid guide structure is plate-shaped on the side facing the motor housing, and the rigid guide structure and the elastic connection structure are recessed in the middle towards or away from the motor housing to form a rigid limiting part and an elastic recessed part, the rigid limiting part being used to limit the elastic recessed part.

[0013] In an optional implementation, the rigid guide structure is connected to the housing via two side plates.

[0014] In an optional embodiment, the periphery of the elastic recess is recessed into the drive structure to form a grease reservoir, and the periphery of the elastic recess is provided with reinforcing ribs.

[0015] On the other hand, this utility model provides a self-propelled lawn mower equipped with any of the above-mentioned mowing components.

[0016] The beneficial effects of the mowing assembly and autonomous lawnmower provided in this utility model embodiment include: the use of a guide mechanism between the motor housing and the protective housing prevents the actuator from tilting or swaying when adjusting the mowing height; furthermore, the elastic structure provides better vibration reduction and lower noise during height adjustment, thereby improving the user experience. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the base plate of the lawn mowing equipment provided in this embodiment;

[0019] Figure 2 This is a schematic diagram of the structure of a lawn mowing component provided in this embodiment;

[0020] Figure 3 In order to be in Figure 2 Based on the structural diagram with the height adjustment structure removed;

[0021] Figure 4 In order to be in Figure 3 A structural diagram with the protective shell removed from the original structure;

[0022] Figure 5 This is a schematic diagram of the internal structure of a lawn mowing component provided in this embodiment;

[0023] Figure 6 This is a top view of a lawn mowing assembly provided in this embodiment;

[0024] Figure 7 This is a schematic diagram of an elastic connection structure provided in this embodiment.

[0025] Explanation of reference numerals in the attached drawings: 1. Mowing assembly; 2. Base plate of mowing equipment; 3. Protective shell; 4. Motor housing; 5. Height adjustment shaft; 6. Height adjustment motor; 7. Rigid guide structure; 8. Elastic connection structure; 9. Mowing motor; 10. Guide rail; 11. Elastic cantilever; 111. Base; 112. Bending part; 113. First end; 114. Second end; 12. Rib; 13. Stop part; 15. Elastic recess; 16. Side plate; 17. Grease tank; 18. Reinforcing rib; 19. Rigid limiting part; 20. Elastic recess; 21. Connecting boss; 22. Threaded bushing. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do 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, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first" and "second" are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. The connections described and protected herein do not imply that there are no other components between them and that they are directly connected. They may also be indirectly connected through other intermediate components.

[0031] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other. The main protection point of this utility model lies in the structural layout rather than the circuit design, and the circuits set on the circuit board in the embodiments can be replaced according to the actual situation.

[0032] This utility model provides a lawn mowing component 1, which is installed inside a lawn mowing device (not limited to a self-propelled lawn mower, a ride-on lawn mower, or a push lawn mower) and includes a protective shell 3, an actuator, a height adjustment mechanism, and a guide mechanism. The protective shell 3 is disposed on the base plate 2 of the lawn mower and extends vertically to form an accommodating space on its inner side. The actuator is disposed within the accommodating space and includes a motor housing 4 and a lawn mowing motor 9 installed inside the motor housing 4. A cutting disc is mounted on the output shaft of the lawn mowing motor 9, i.e., the lawn mowing motor 9 provides rotational power to the cutting disc. The guide mechanism includes a rigid guide structure 7 disposed on the inner wall of the protective shell 3 and an elastic connecting structure 8 disposed on the motor housing 4. The rigid guide structure 7 includes a guide rail 10 protruding toward the actuator, and the elastic connecting structure 8 is provided with an elastic cantilever 11 facing the guide rail 10 for abutting against the guide rail 10. The actuator is driven by the height adjustment mechanism to slide up and down along the guide rail 10 under the guidance of the rigid guide structure 7.

[0033] It can be understood that the protective shell 3 is detachably fixed to the base plate 2 of the mowing equipment. With the movement of the height adjustment mechanism, the height of the protective shell 3 from the ground will not change, while the motor housing 4 will move up and down relative to the protective shell 3 along with the mowing motor 9 inside it. It should be noted that the above-mentioned actuator is set in the accommodating space, which only limits the installation position of the actuator on the base plate 2 of the mowing equipment. It does not mean that the accommodating space formed by the protective shell 3 completely covers the entire actuator. Secondly, the above-mentioned protective shell 3 is not required to be closed. It can be hollow, or even composed of only a plate. The height adjustment mechanism can be electric or manual, and then transmitted through threads, which is a common design in the art. In one embodiment, the height adjustment mechanism includes a height adjustment motor 6, a height adjustment shaft 5, a connecting boss 21 set on the motor housing 4, and a threaded bushing 22 set between the height adjustment shaft 5 and the connecting boss 21. The height adjustment motor 6 drives the height adjustment shaft 5 to rotate, thereby driving the threaded bushing 22 to engage with the threaded connection hole, thus adjusting the mowing height.

[0034] In an optional embodiment, the two ends of the elastic connecting structure 8 are recessed into the rigid guide structure 7 to form a clamping portion for holding the rigid guide structure 7, and there are two elastic cantilever arms 11 distributed on both sides of the clamping portion. By clamping the rigid guide structure 7, the actuator is stopped by the rigid guide structure 7 when there is a large left and right swing, further preventing deviation during height adjustment.

[0035] In an optional embodiment, the elastic cantilever 11 is L-shaped, consisting of a base 111 and a bent portion 112, with the bent portion 112 abutting against the guide rail 10. This design allows for a smaller gap between the elastic cantilever 11 and the guide rail 10, and the L-shaped design better absorbs vibrations and reduces noise. In another embodiment, the elastic cantilever 11 has a fan-shaped structure.

[0036] In an optional embodiment, since both ends of the elastic connecting structure 8 are recessed into the rigid guide structure 7, a connecting groove extending vertically is formed on the side of the elastic connecting structure 8 facing away from the rigid guide structure 7. Preferably, the connecting groove is formed at both ends (first end and second end) of the elastic connecting structure 8, and a rib 12 extending outward (towards the rigid guide structure) is provided on the motor housing 4, and the rib 12 is inserted into the connecting groove. This design allows the elastic connecting structure 8 to be firmly connected to the motor housing 4. In another embodiment, the elastic connecting structure 8 and the motor housing 4 are integrally molded and both are made of plastic, further simplifying the installation difficulty and reducing the risk of improper component fit.

[0037] In an optional embodiment, the elastic connection structure 8 has stop portions 13 above and below the elastic cantilever 11. Since the height of the guide rail 10 does not change, the stop portions 13 prevent the guide rail 10 from disengaging from the elastic connection structure 8 and limit the range of movement of the motor housing 4 relative to the guide rail 10, thus playing a limiting role.

[0038] In an optional embodiment, the rigid guide structure 7 is plate-shaped on the side facing the motor housing 4, and the guide rail 10 extends from this plate. Preferably, its extension direction is perpendicular to the plate on the horizontal plane, and the rigid guide structure 7 is recessed in the middle towards or away from the motor housing 4, corresponding to the elastic connection structure 8, to form a rigid limiting part 19 and an elastic recess 20. The rigid limiting part 19 is used to limit the elastic recess 20. By adding the recess structure, the rigid guide structure 7 can further limit the elastic connection structure 8, further reducing vibration.

[0039] In an optional embodiment, the rigid guide structure 7 is connected to the housing via two side plates 16, which are arranged parallel to the extension direction of the guide rail 10. This connection method allows the rigid guide structure 7 to have a larger contact area with the two ends of the clamping part, thus achieving a better limiting effect.

[0040] In an optional embodiment, the periphery of the elastic recess 20 is recessed into the drive structure to form a grease reservoir 17. After grease is applied to the elastic connecting structure 8, the tight fit between the rigid guide structure 7 and the elastic connecting structure 8 creates a relatively sealed storage space between the rigid guide structure 7 and the grease reservoir 17, allowing the grease to remain for a longer period, reducing noise and increasing adjustment smoothness. Furthermore, a reinforcing rib 18 is provided around the periphery of the elastic recess 20 to strengthen the elastic recess 20 and prevent deformation.

[0041] On the other hand, this utility model provides a self-propelled lawnmower equipped with any of the aforementioned mowing components 1. This self-propelled lawnmower exhibits excellent noise and vibration reduction during height adjustment, improving the user experience.

[0042] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A lawn mowing assembly, installed inside a lawn mowing device and comprising a protective shell, an actuator, a height adjustment mechanism, and a guiding mechanism, characterized in that: The protective shell is disposed on the bottom plate of the lawn mowing equipment and extends vertically to form an accommodating space on its inner side; The actuator is disposed within the accommodating space and includes a motor housing and a mowing motor installed inside the motor housing; and a cutting disc is mounted on the output shaft of the mowing motor; The guiding mechanism includes a rigid guiding structure disposed on the inner wall of the protective shell and an elastic connecting structure disposed on the motor housing. The rigid guiding structure includes a guide rail protruding toward the actuator, and the elastic connecting structure is provided with an elastic cantilever facing the guide rail for abutting against the guide rail. The actuator slides up and down along the guide rail under the guidance of the rigid guide structure and the height adjustment mechanism.

2. The lawnmower assembly according to claim 1, characterized in that: The two ends of the elastic connection structure are recessed into the rigid guide structure to form a clamping part for clamping the rigid guide structure. There are two elastic cantilever arms distributed on both sides of the clamping part.

3. The lawnmower assembly according to claim 1, characterized in that: The elastic cantilever is L-shaped, consisting of a base and a bend, with the bend serving to abut against the guide rail.

4. The lawnmower assembly according to claim 2, characterized in that: The elastic connection structure has connecting grooves at both ends, and the motor housing is provided with outwardly extending ribs that are inserted into the connecting grooves.

5. The lawnmower assembly according to claim 1, characterized in that: The elastic connection structure has stop portions above and below the elastic cantilever.

6. The lawnmower assembly according to claim 1, characterized in that: The elastic connection structure is integrally formed with the motor housing.

7. The lawnmower assembly according to claim 2, characterized in that: The rigid guide structure is plate-shaped on the side facing the motor housing, and the rigid guide structure and the elastic connection structure are recessed in the middle towards or away from the motor housing to form a rigid limiting part and an elastic recessed part, the rigid limiting part being used to limit the elastic recessed part.

8. The lawnmower assembly according to claim 7, characterized in that: The rigid guide structure is connected to the shell through two side plates.

9. The lawnmower assembly according to claim 7, characterized in that: The elastic connection structure includes a grease reservoir, which is formed by the periphery of the elastic recess recessing into the driving structure, and the periphery of the elastic recess recess is provided with reinforcing ribs.

10. A self-propelled lawnmower, characterized in that: Includes the lawn mowing assembly as described in any one of claims 1-9.

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