Intelligent mower

Abstract

A height adjusting piece of the intelligent mower drives a connecting rod assembly to move so as to drive a cutting assembly to move up and down, the connecting rod assembly comprises a parallel connecting rod movably connected between a shell and a motor cylinder and a lifting piece arranged on the parallel connecting rod, and the height adjusting piece moves to drive the lifting piece to move up and down. Therefore, the cutting assembly is driven to move up and down. According to the intelligent mower, on one hand, the height adjusting piece directly drives the parallel connecting rod to move so as to drive the cutting assembly to move, the parallel connecting rod and the height adjusting piece are kept in contact at multiple positions in the height adjusting process, and the height adjusting structure operates stably; on the other hand, a lever is formed among the height adjusting piece, the parallel connecting rod and the motor cylinder, and the adjustable range of the cutting height of the intelligent mower is enlarged.

Description

Technical field

[0001] The utility model relates to the technical field of garden tools, in particular to an intelligent lawn mower. [Background Technology]

[0002] Smart lawn mowers are a common gardening tool used for mowing various lawns. To meet the varying cutting height requirements of different users, smart lawn mowers typically feature a height adjustment mechanism to adjust the cutting height. Cutting height refers to the height of the cutting assembly above the ground. Existing height adjustment mechanisms in smart lawn mowers utilize a four-bar linkage to rotatably connect the cutting assembly to the housing. A cam mechanism drives the four-bar linkage or the cutting assembly to achieve height adjustment. This mechanism not only allows for flexible adjustment of the cutting height but also improves the maneuverability of the smart lawn mower.

[0003] However, the above-mentioned height adjustment device has the following problems: on the one hand, if the above-mentioned cam structure drives the cutting assembly to move, the height adjustment device will additionally occupy space in the front and rear directions of the smart lawn mower, affecting the structural arrangement of the smart lawn mower; on the other hand, if the above-mentioned cam structure is connected to the crossbeam of the four-bar structure, then when adjusting the height, the cam structure and the crossbeam are prone to shaking and detaching, resulting in an unstable structure.

[0004] In view of this, it is indeed necessary to provide an improved intelligent lawn mower to overcome the defects of the prior art. [Utility Model Content]

[0005] In view of the deficiencies in the prior art, the present invention aims to provide an intelligent lawn mower with a simple and compact height adjustment structure.

[0006] The present invention solves the problems of the prior art by adopting the following technical solutions: an intelligent lawn mower, comprising: a shell; a cutting assembly, mounted on the shell, the cutting assembly comprising a cutting element, a cutting motor connected to and driving the cutting element, and a motor cylinder for supporting the cutting motor; a connecting rod assembly, supporting the cutting assembly and driving the cutting assembly to move up and down; a height adjusting member, connected to the connecting rod assembly and driving the connecting rod assembly to move; the connecting rod assembly comprises a parallel connecting rod movably connected between the motor cylinder and the shell and a lifting member arranged on the parallel connecting rod, the movement of the height adjusting member drives the lifting member to move up and down, thereby driving the cutting assembly to move up and down.

[0007] Furthermore, the parallel connecting rod includes a first connecting rod and a second connecting rod respectively connected to both sides of the motor barrel in the left and right directions of the intelligent lawn mower, and the lifting member includes a first lifting part and a second lifting part respectively arranged on the first connecting rod and the second connecting rod, and the first lifting part and the second lifting part are respectively in contact with the height adjustment member.

[0008] Furthermore, the height adjusting member includes a rotating shaft and a first spiral portion and a second spiral portion arranged on the circumference of the rotating shaft, the first spiral portion and the second spiral portion are arranged intermittently, and the first lifting portion and the second lifting portion are in contact with the first spiral portion and the second spiral portion respectively.

[0009] Furthermore, the first spiral portion and the second spiral portion are arranged in centrosymmetry with respect to the center of the rotating shaft.

[0010] Furthermore, a line connecting the center of the first lifting portion and the center of the second lifting portion passes through the central axis of the rotating shaft.

[0011] Furthermore, the first lifting portion includes a first connecting end connected to or integrally formed with the first connecting rod and a first matching end extending from the first connecting end toward the height adjusting member, and the first matching end at least partially protrudes from the lower surface of the first connecting end.

[0012] Furthermore, the second lifting portion includes a second connecting end connected to or integrally formed with the second connecting rod and a second matching end extending downward from the second connecting end, the second matching end at least partially protruding from the lower surface of the second connecting end, and during the movement of the height adjusting member, the first matching end and the second matching end are in contact with the height adjusting member at the same time.

[0013] Furthermore, in the height direction of the intelligent lawn mower, a length of the first mating end protruding from a lower surface of the first connection end is smaller than a length of the second mating end protruding from a lower surface of the second connection end.

[0014] Furthermore, the position of the lifting member on the parallel connecting rod is closer to the connection between the parallel connecting rod and the housing than the connection between the parallel connecting rod and the motor barrel.

[0015] Furthermore, the connection between the parallel link and the shell is spaced apart from the lifting member by a preset distance, and the preset distance is not less than one-third of the length of the parallel link and not more than one-half of the length of the parallel link.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the height-adjusting part of the intelligent lawn mower drives the connecting rod assembly to move to drive the cutting assembly to move up and down, and the connecting rod assembly includes a parallel connecting rod movably connected between the shell and the motor barrel and a lifting part arranged on the parallel connecting rod. The movement of the height-adjusting part drives the lifting part to move up and down, thereby driving the cutting assembly to move up and down. In this way, on the one hand, the height-adjusting part directly drives the parallel connecting rod to move to drive the cutting assembly to move, and the parallel connecting rod and the height-adjusting part maintain multiple simultaneous contacts during the height-adjusting process, and the height-adjusting structure operates stably; on the other hand, a lever is formed between the height-adjusting part, the parallel connecting rod and the motor barrel, thereby increasing the adjustable range of the cutting height of the intelligent lawn mower.

Brief Description of the Drawings

[0017] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of the intelligent lawn mower in a preferred embodiment of the present utility model;

[0019] Figure 2 yes Figure 1 A schematic structural diagram of a cutting assembly of the intelligent lawn mower shown;

[0020] Figure 3 yes Figure 2 A partial enlarged view of part A of the smart lawn mower shown;

[0021] Figure 4 yes Figure 2 A schematic cross-sectional view of a cutting assembly of a smart lawn mower is shown.

[0022] The meaning of the reference numerals in the figures:

[0023] Smart lawn mower 100 housing 1

[0024] Travel module 2 drive wheel 21

[0025] Auxiliary wheel 22 Cutting component 3

[0026] Cutting element 31 Motor cylinder 32

[0027] Human-machine system 4 Linkage assembly 5

[0028] Parallel link 51 First link 511

[0029] Second connecting rod 512 lifting member 52

[0030] First lifting portion 521 First connecting end 523

[0031] First mating end 525 Second lifting portion 522

[0032] Second connection end 524 Second matching end 526

[0033] Height adjustment part 6 shaft 61

[0034] First spiral portion 62 Second spiral portion 63 [Specific implementation method]

[0035] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. In the description of this specification, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in an appropriate manner.

[0036] The terms used in this utility model are for the purpose of describing specific embodiments only and are not intended to limit the utility model. For example, the terms "upper," "lower," "front," and "rear" used below to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are used only to facilitate the description of the utility model and simplify the description. They do not indicate or imply that the device or element referred to must have a specific orientation or be constructed or operated in a specific orientation. Therefore, they should not be understood as limiting the utility model.

[0037] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] See also Figures 1 to 4 The figure shows an intelligent lawn mower 100 according to an embodiment of the present invention, which moves and works in a working area. The intelligent lawn mower 100 includes a housing 1, a walking module 2 for supporting the movement of the housing 1, a cutting assembly 3 arranged at the bottom of the housing 1, a control module (not shown) installed in the housing 1 for controlling the automatic operation of the walking module 2 and the automatic operation of the cutting assembly 3, a human-machine system 4 arranged on the outer surface of the housing 1 for user operation, and an energy module (not shown) for powering the intelligent lawn mower 100.

[0039] The housing 1 includes a base, an upper cover connected to the base and defining a first chamber, and a decorative cover connected to the base and / or the upper cover and defining a second chamber. Specifically, the base is used to mount functional modules such as the travel module 2, the cutting assembly 3, the control module, and the energy module. The upper cover is constructed to at least partially cover the base and is connected to the base to form a first chamber. The control module is at least partially housed in this first chamber. In one embodiment of the present invention, the upper cover is sealed to the base, and the first chamber is sealed and isolated from the external environment. The decorative cover primarily serves an aesthetic and decorative purpose and is connected to the upper cover and defines a second chamber. Modules for user operation, such as the human-machine interface of the intelligent lawn mower 100, are located in this second chamber. It should be noted that the decorative cover being connected to the upper cover and defining the second chamber is merely an optional embodiment of the present invention. In other embodiments, the decorative cover may also be connected to the base, or to both the base and the upper cover.

[0040] The travel module 2 is used to drive the intelligent lawn mower 100 within the working area and includes a drive wheel 21 and auxiliary wheels 22 mounted on the housing 1. Specifically, there are two drive wheels 21, each connected to a corresponding travel motor (not shown). The travel motor drives the drive wheels 21 to rotate to achieve automatic travel of the intelligent lawn mower 100. The auxiliary wheels 22 mainly serve as auxiliary support. There are one or two auxiliary wheels 22 located at the front of the intelligent lawn mower 100. The auxiliary wheels 22 are not connected to the travel motor, but are driven to roll when supporting the intelligent lawn mower 100. Through this structural arrangement, the intelligent lawn mower 100 can be controlled by the control module and flexibly move and turn on the work surface. During normal travel, the two travel motors output the same speed, directly driving or indirectly driving the intelligent lawn mower 100 to move through a gear or belt transmission structure, and the auxiliary wheel 22 also rolls along; when turning, the two travel motors output different speeds, and the intelligent lawn mower 100 will turn toward the side of the drive wheel 21 with a lower speed, or the side of the drive wheel 21 corresponding to the reverse direction.

[0041] The control module is used to control the automatic movement and operation of the smart lawn mower 100. The functions it performs include controlling the cutting component 3 to start or stop, generating a walking path and controlling the walking module 2 to walk accordingly, receiving environmental signals detected by the smart lawn mower 100, judging the power level of the energy module and promptly controlling the smart lawn mower 100 to return to the docking station for automatic docking and charging, etc.

[0042] For ease of understanding, in the present invention, the horizontal working surface that the smart lawn mower 100 passes through when performing a cutting operation is used as a reference object, the plane parallel to the horizontal working surface is used as a horizontal plane, the direction perpendicular to the horizontal working surface is used as the height direction of the smart lawn mower 100, the forward and backward directions of the smart lawn mower 100 are used as the front-back direction of the smart lawn mower 100, and the left-right direction of the smart lawn mower 100 is perpendicular to the front-back direction of the smart lawn mower 100.

[0043] The cutting assembly 3 includes a cutting element 31 for cutting grass, a cutting motor (not shown) connected to and driving the cutting element 31, and a motor cylinder 32 for supporting the cutting motor. Specifically, the cutting motor is mounted on the base of the housing 1 and is electrically connected to a control module, which can control the starting and stopping of the cutting motor and adjust the cutting motor's speed. The intelligent lawn mower 100 also includes a connecting rod assembly 5 that supports the cutting assembly 3 and drives the cutting assembly 3 up and down. The connecting rod assembly 5 includes a parallel connecting rod 51 that is movably connected between the motor cylinder 32 and the housing 1. In this way, when the intelligent lawn mower 100 encounters obstacles such as stones and low shrubs during operation, the cutting element 31 is pushed by the obstacles and moves upward with the help of the parallel connecting rod 51. This, on the one hand, prevents the cutting element 31 from being damaged by hard collisions with obstacles, and on the other hand, improves the maneuverability of the intelligent lawn mower 100. It should be noted that the cutting element 31 can be a cutting disc and multiple cutting blades mounted on the cutting disc, or a single cutting blade, without limitation here.

[0044] The intelligent lawn mower 100 includes a height adjustment member 6 connected to the connecting rod assembly 5 and driving the movement of the connecting rod assembly 5. Specifically, the connecting rod assembly 5 includes a lifting member 52 disposed on a parallel link 51. When the user adjusts the cutting height, the movement of the height adjustment member 6 drives the lifting member 52 up and down, which in turn moves the parallel link 51, causing the cutting assembly 3, which is rotatably connected to the parallel link 51, to move up and down synchronously. In this embodiment, height adjustment is achieved by disposing the height adjustment member 6 between the parallel link 51 and the cutting assembly 3, and the height adjustment member 6 directly drives the parallel link 51 to rotate, thereby driving the cutting assembly 3 up and down. This, on the one hand, makes the intelligent lawn mower 100 compact in the front-to-back direction; on the other hand, a lever is formed between the height adjustment member 6, the parallel link 51, and the cutting assembly 3, thereby increasing the adjustable range of the cutting height of the intelligent lawn mower 100.

[0045] The parallel link 51 includes a first link 511 and a second link 512 respectively connected to both sides of the motor barrel 32 in the left and right directions of the intelligent lawn mower 100. The lifting member 52 includes a first lifting portion 521 and a second lifting portion 522 respectively arranged on the first link 511 and the second link 512. When the user adjusts the cutting height, the first lifting portion 521 and the second lifting portion 522 respectively contact the height adjustment member 6. In this way, a stable two-point support can be achieved between the height adjustment member 6 and the lifting member 52. When the height adjustment member 6 rotates, it can stably and reliably push the first lifting portion 521 and the second lifting portion 522 to move upward, so that the first link 511 and the second link 512 can synchronously rotate upward relative to the shell 1, and at the same time drive the motor barrel 32 to move upward, thereby improving the stability of the height adjustment structure of the intelligent lawn mower 100.

[0046] The first lifting portion 521 includes a first connecting end 523 connected to or integrally formed with the first connecting rod 511 and a first matching end 525 extending from the first connecting end 523 toward the direction close to the height adjusting member 6, and the first matching end 525 at least partially protrudes from the lower surface of the first connecting end 523; the second lifting portion 522 includes a second connecting end 524 connected to or integrally formed with the second connecting rod 512 and a second matching end 526 extending from the second connecting end 524 toward the direction close to the height adjusting member 6, and the second matching end 526 at least partially protrudes from the lower surface of the second connecting end 524, and during the movement of the height adjusting member 6, the first matching end 525 and the second matching end 526 are in contact with the height adjusting member 6 at the same time.

[0047] Specifically, in one embodiment of the present invention, the height adjusting member 6 includes a rotating shaft 61 and a first spiral portion 62 and a second spiral portion 63 arranged circumferentially of the rotating shaft 61. The first spiral portion 62 and the second spiral portion 63 are arranged at intervals, and the first lifting portion 521 and the second lifting portion 522 are in contact with the first spiral portion 62 and the second spiral portion 63, respectively. Among them, the first spiral portion 62 and the second spiral portion 63 are arranged in a central symmetrical manner relative to the center of the rotating shaft 61, and in the height direction of the intelligent lawn mower 100, the length of the first matching end 525 protruding from the lower surface of the first connecting end 523 is basically equal to the length of the second matching end 526 protruding from the lower surface of the second connecting end 524. Therefore, during the height adjustment process, the first matching end 525 and the second matching end 526 move along the corresponding first spiral portion 62 and second spiral portion 63 respectively, and the first matching end 525 and the second matching end 526 always remain flush in the height direction of the intelligent lawn mower 100, so that the height adjustment member 6 and the lifting member 52 on the parallel connecting rod 5 can always maintain a stable connection, avoiding the situation where the intelligent lawn mower 100 encounters bumps or hits obstacles during walking operation, and the height adjustment member 6 and the connecting rod assembly 5 are accidentally separated due to impact, resulting in the failure of the height adjustment function of the intelligent lawn mower 100.

[0048] In another embodiment of the present invention, only one spiral portion is provided on the rotating shaft 61 of the height adjusting member 6. At this time, in the height direction of the intelligent lawn mower 100, the length of the first mating end 525 protruding from the lower surface of the first connecting end 523 is less than the length of the second mating end 526 protruding from the lower surface of the second connecting end 524. In this way, the first lifting portion 521 contacts the height adjusting member 6 through the first mating end 525 protruding from the lower surface of the first connecting end 523, and the second lifting portion 522 contacts the height adjusting member 6 through the second mating end 526 protruding from the lower surface of the second connecting end 524, and the length of the first mating end 525 protruding from the lower surface of the first connecting end 523 is less than the length of the second mating end 526 protruding from the lower surface of the second connecting end 524. Therefore, when the rotating shaft 61 of the height adjusting member 6 rotates, the first mating end 525 and the second mating end 526 of different lengths in the height direction of the smart lawn mower can respectively maintain a reliable connection with the two contact points of different heights on the spiral portion, so that during the height adjustment process, the height adjusting member 6 and the lifting member 52 on the parallel connecting rod 5 can always maintain a stable connection, avoiding the situation where the smart lawn mower 100 encounters bumps or hits obstacles during walking operation, and the height adjusting member 6 and the connecting rod assembly 5 are accidentally separated due to impact, resulting in the failure of the height adjustment function of the smart lawn mower 100.

[0049] The line connecting the center of the first connecting end 523 and the center of the second connecting end 522 is perpendicular to the front-to-back direction of the smart lawn mower 100. Specifically, the line connecting the center of the first lifting portion 521 and the center of the second lifting portion 522 passes through the central axis of the rotating shaft 61, and the first lifting portion 521 and the second lifting portion 522 are arranged side by side in the left-right direction of the smart lawn mower. As a result, the connection and movement structure between the height-adjusting member 6 and the parallel connecting rod 5 is stable, occupying little space within the smart lawn mower 100. This further prevents the height-adjusting member 6 and the connecting rod assembly 5 from accidentally separating due to impact when the smart lawn mower 100 encounters bumps or hits obstacles during operation, thereby preventing the height-adjusting function of the smart lawn mower 100 from being lost.

[0050] It should be noted that in this embodiment, the height adjustment member 6 is configured as a spatial cam, and the rotating shaft 61 is the spatial camshaft. The extension direction of its rotation axis is parallel to the height direction of the intelligent lawn mower 100, and the aforementioned spiral portion is the spatial cam surface, which is disposed around the outer surface of the rotating shaft 61. However, in other embodiments, the height adjustment member 6 can also be configured as a planar cam structure or a screw structure. The screw structure or planar cam structure cooperates with the aforementioned parallel connecting rod 51 to achieve cutting height adjustment, and can also achieve a compact front-to-back direction of the intelligent lawn mower 100.

[0051] The position of the lifting member 52 on the parallel link 51 is closer to the connection between the parallel link 51 and the housing 1 than to the connection between the parallel link 51 and the motor cylinder 32. Specifically, when adjusting the cutting height, the movement of the height adjustment member 6 drives the lifting member 52 to move in the height direction. At this time, the parallel link 51 rotates upward about its connection with the housing 1, and the parallel link 51, the height adjustment member 6, and the motor cylinder 32 form a lever structure. Therefore, in this embodiment, by arranging the connection between the height adjustment member 6 and the parallel link 51 closer to the connection between the parallel link 51 and the housing 1 than to the connection between the parallel link 51 and the motor cylinder 32, a smaller upward movement of the height adjustment member 6 can achieve a larger upward movement of the cutting assembly 3, thereby increasing the adjustable range of the cutting height of the intelligent lawn mower 100.

[0052] It should be noted that in an optional embodiment of the present invention, the connection between the parallel link 51 and the shell 1 is separated from the lifting member 52 by a preset distance, and the preset distance is not less than one-third of the length of the parallel link 51 and not more than one-half of the length of the parallel link 51. In this way, on the one hand, it is ensured that the adjustable range of the cutting height of the intelligent lawn mower 100 is greatly increased; on the other hand, when performing the height adjustment operation, the operating member 6 is not easy to interfere with the parallel link 51 and other components inside the shell 1 of the intelligent lawn mower 100, and the structure is stable.

[0053] The present invention is not limited to the specific embodiments described above. Those skilled in the art will readily appreciate that many other alternatives to the intelligent lawn mower of the present invention exist without departing from the principles and scope of the present invention. The scope of protection of the present invention shall be determined by the claims.

Claims

1. An intelligent lawn mower, comprising: case; a cutting assembly mounted on the housing, the cutting assembly comprising a cutting element, a cutting motor connected to and driving the cutting element, and a motor cylinder for supporting the cutting motor; A connecting rod assembly, supporting the cutting assembly and driving the cutting assembly to move up and down; A height-adjusting member connected to the connecting rod assembly and driving the connecting rod assembly to move; It is characterized in that: the connecting rod assembly includes a parallel connecting rod movably connected between the motor cylinder and the shell and a lifting member arranged on the parallel connecting rod, and the movement of the height adjusting member drives the lifting member to move up and down, thereby driving the cutting assembly to move up and down.

2. The intelligent lawn mower according to claim 1, wherein: The parallel connecting rod includes a first connecting rod and a second connecting rod respectively connected to both sides of the motor barrel in the left and right directions of the intelligent lawn mower, and the lifting member includes a first lifting part and a second lifting part respectively arranged on the first connecting rod and the second connecting rod, and the first lifting part and the second lifting part are respectively in contact with the height adjustment member.

3. The intelligent lawn mower according to claim 2, characterized in that: The height adjusting member includes a rotating shaft and a first spiral portion and a second spiral portion arranged in a circumferential direction of the rotating shaft. The first spiral portion and the second spiral portion are intermittently arranged, and the first lifting portion and the second lifting portion are in contact with the first spiral portion and the second spiral portion respectively.

4. The intelligent lawn mower according to claim 3, characterized in that: The first spiral portion and the second spiral portion are centrally symmetrically arranged relative to the center of the rotating shaft.

5. The intelligent lawn mower according to claim 3, characterized in that: A line connecting the center of the first lifting portion and the center of the second lifting portion passes through the central axis of the rotating shaft.

6. The intelligent lawn mower according to claim 2, characterized in that: The first lifting portion includes a first connecting end connected to or integrally formed with the first connecting rod and a first matching end extending from the first connecting end toward the height adjusting member, and the first matching end at least partially protrudes from the lower surface of the first connecting end.

7. The intelligent lawn mower according to claim 6, characterized in that: The second lifting portion includes a second connecting end connected to or integrally formed with the second connecting rod and a second matching end extending downward from the second connecting end, the second matching end at least partially protruding from the lower surface of the second connecting end, and during the movement of the height adjusting member, the first matching end and the second matching end are in contact with the height adjusting member at the same time.

8. The intelligent lawn mower according to claim 7, characterized in that: In the height direction of the intelligent lawn mower, a length of the first mating end protruding from a lower surface of the first connecting end is smaller than a length of the second mating end protruding from a lower surface of the second connecting end.

9. The intelligent lawn mower according to claim 1, characterized in that: The position of the lifting member on the parallel link is closer to the connection between the parallel link and the housing than to the connection between the parallel link and the motor cylinder.

10. The intelligent lawn mower according to claim 9, characterized in that: The connection point between the parallel link and the shell is spaced apart from the lifting member by a preset distance, and the preset distance is not less than one-third of the length of the parallel link and not more than one-half of the length of the parallel link.

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