Floating structure for a lawnmower

Abstract

The utility model discloses a floating structure of mower adopts the design of bottom plate and main body fuselage form split type, set up bottom plate in the bottom of main body fuselage, through the elastic connecting component and main body fuselage form the connection with elastic buffer, under the condition of the encounter of the obstacle of mower, through the bottom plate and the collision of the obstacle, the setting of elastic connecting component makes the bottom plate float and shift relative to main body fuselage when colliding, thereby resolving most of the collision impact, thereby effectively weakening the condition that main body fuselage occurs the concussion and shakes, the stability of the encounter of the obstacle of mower is greatly improved, further, through setting hall sensor and trigger magnet, can when encountering the obstacle quick feedback encounters the obstacle signal, when the visual identification function does not identify the obstacle, the feedback of the obstacle signal can make the mower quick response stop, effectively avoid the further entry of the obstacle into the bottom of mower.

Description

Technical Field

[0001] This utility model belongs to the field of garden machinery technology and relates to a floating structure for a lawnmower. Background Technology

[0002] Currently, intelligent lawnmowers with visual recognition capabilities use a rear-wheel drive system with rear-end drive wheels and front-end omnidirectional wheels. They utilize sensors and cameras at the front for obstacle avoidance, positioning, and path planning during operation. However, limitations in the accuracy of these visual devices and the processing speed of obstacle avoidance algorithms prevent lawnmowers from completely avoiding all obstacles, especially rocks and mounds obscured by grass. When these obstacles collide, the existing unibody design can cause the entire machine to vibrate and sway, affecting stability. Even worse, these unavoidable obstacles can easily enter the bottom of the lawnmower, damaging the mowing disc. Utility Model Content

[0003] This invention aims to ensure the stability of a lawnmower when encountering obstacles and to reduce vibration and swaying. By relying on physical structure to improve the lawnmower's buffering capacity when encountering obstacles, it provides a floating structure for the lawnmower. The structure employs a separate design between the base plate and the main body, with the base plate positioned at the bottom of the main body and connected to it via an elastic connecting component. In the event of an obstacle collision, the base plate floats and shifts relative to the main body upon impact, thus dissipating most of the impact force and effectively reducing vibration and swaying of the main body, significantly improving the lawnmower's stability when encountering obstacles. Furthermore, by incorporating a Hall sensor and a trigger magnet, an obstacle encounter signal can be quickly fed back. Even if the visual recognition function fails to detect an obstacle, the feedback signal allows the lawnmower to quickly stop, effectively preventing obstacles from further entering the bottom of the lawnmower.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A floating structure for a lawnmower includes a main body, a base plate, and an elastic connecting assembly. The base plate is disposed at the bottom of the main body, and the elastic connecting assembly includes an elastic rod capable of elastic deformation. The two ends of the elastic rod are respectively connected to the base plate and the main body, thereby causing the base plate to float or shift relative to the main body.

[0006] Furthermore, the elastic connection assembly also includes two connectors. The two ends of the elastic rod are respectively provided with grooves. The two connectors are respectively interference-fitted into the two grooves. The connectors are provided with threaded holes. The two connectors are respectively fixedly connected to the base plate and the main body.

[0007] Furthermore, the outer periphery of the connector and / or the inner periphery of the groove are provided with an undulating texture.

[0008] Furthermore, the texture includes ribs protruding along the inner periphery of the groove, and / or grooves recessed along the outer periphery of the connector.

[0009] Furthermore, a Hall sensor and a trigger magnet are respectively provided on the main body and the base plate, and the Hall sensor and the trigger magnet are positioned relative to each other.

[0010] Furthermore, the resilient connection component is provided with one or more.

[0011] Furthermore, the base plate is provided with three elastic connecting components, which are respectively located at the central axis position of the main body and at the lateral sides of the central axis.

[0012] Furthermore, a drive wheel is provided at the front end of the main body along its direction of travel.

[0013] Furthermore, the base plate includes a front base plate and a rear base plate, which are respectively disposed at the front end and the rear end of the main body.

[0014] Furthermore, the left and right ends of the front base plate extend rearward along the circumference of the main body to approach the front side of the drive wheel, and the left and right ends of the rear base plate extend forward along the circumference of the main body to approach the rear side of the drive wheel.

[0015] In summary, the advantages of this utility model are as follows:

[0016] This utility model of a lawnmower adopts a separate design where the base plate and the main body form a split structure. The base plate is located at the bottom of the main body and is connected to the main body via an elastic connecting component, forming an elastic buffer. In the event of an obstacle, when the lawnmower collides with the obstacle, the elastic connecting component causes the base plate to float and shift relative to the main body upon impact, thereby dissipating most of the impact force and effectively reducing the vibration and shaking of the main body, significantly improving the stability of the lawnmower when encountering obstacles. Furthermore, by incorporating a Hall sensor and a trigger magnet, an obstacle encounter signal can be quickly fed back upon encountering an obstacle. If the visual recognition function fails to detect an obstacle, the feedback obstacle encounter signal can cause the lawnmower to react and stop quickly, effectively preventing obstacles from further entering the bottom of the lawnmower. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the lawnmower of this utility model.

[0018] Figure 2 for Figure 1 A schematic diagram of the structure from the bottom middle view.

[0019] Figure 3 for Figure 1 A schematic diagram of the explosion structure.

[0020] Figure 4 This is a cross-sectional structural diagram of the elastic connection component.

[0021] Figure 5 This is a three-dimensional structural diagram of the elastic connection component.

[0022] The diagram shows: 1. Main body; 2. Drive wheel; 31. Front base plate; 32. Rear base plate; 4. Elastic connection assembly; 41. Elastic rod; 42. Groove; 421. Rib; 43. Connector; 431. Threaded hole; 432. Groove. Detailed Implementation

[0023] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0024] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0025] In this embodiment of the invention, all directional indicators (such as up, down, left, right, front, back, horizontal, vertical, etc.) are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0026] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of this utility model may actually be an approximate parallel relationship, and the perpendicular relationship may actually be an approximate perpendicular relationship.

[0027] This utility model embodiment provides a floating structure for a lawnmower, which is set at the bottom of the lawnmower to provide floating buffer when the lawnmower encounters obstacles, so as to reduce the overall shaking amplitude of the lawnmower body and improve the operational stability.

[0028] The lawnmower described in this embodiment includes a main body 1, and a mowing disc is provided at the bottom of the main body 1. The lawnmower performs mowing operations through the mowing disc during self-driving.

[0029] The main body 1 is divided into a front end and a rear end along the direction of travel of the lawnmower. The front end of the main body 1 is provided with a drive wheel 2, and the rear end is provided with a rear wheel. The rear wheel is preferably a driven universal wheel. The drive wheel 2 provides driving drive for the lawnmower as a whole. Therefore, the lawnmower in this embodiment is a front-wheel drive type, driven by the front wheel.

[0030] The main body 1 is equipped with a shell, and the main body 1 is equipped with a battery pack, control unit, drive unit, equipment mounting bracket, camera module, etc. located inside the shell.

[0031] The drive wheel 2 is located at the lower front end of the housing, and slots are made on the left and right sides of the housing to expose the drive wheel 2, thereby improving the flexibility of the drive wheel 2 and optimizing the overall spatial structure.

[0032] The battery pack and mowing disc are located in the middle of the main body 1 in the front-to-back direction, between the drive wheel 2 and the caster wheel, so that the overall center of gravity of the lawnmower is centered or forward. The lateral width of the front end of the shell is greater than that of the rear end, and the width of the shell gradually decreases from the front end to the rear end of the main body 1. This can reduce the left and right deviation during driving and improve the overall stability during driving and mowing.

[0033] Specifically, refer to Figures 1 to 4As shown, the floating structure includes a base plate disposed at the bottom of the main body 1. The base plate and the main body 1 are connected movably by an elastic connecting component 4, so that the base plate can float and shift relative to the main body 1 in the horizontal and vertical directions. The base plate covers a set range at the bottom of the main body 1. When the lawnmower is in motion, when the bottom of the main body 1 encounters an obstacle, the base plate will contact the obstacle first, and the floating and / or shifting of the base plate will be achieved by the elastic buffer of the elastic connecting component 4.

[0034] The elastic connection assembly 4 includes an elastic rod 41 and connectors 43 disposed at both ends of the elastic rod 41. The elastic rod 41 is made of a material with elastic deformation properties, including but not limited to rubber and silicone. Grooves 42 are provided at both ends of the elastic rod 41. The two connectors 43 are respectively embedded in the two grooves 42. Based on the material of the elastic rod 41, the inner wall of the groove 42 and the connector 43 form an interference fit, so that the two ends of the elastic rod 41 tightly wrap the two connectors 43, realizing the fixed connection between the connectors 43 and the elastic rod 41. The connector 43 is provided with a threaded hole 431. The housing is fixedly connected to one of the connectors 43 and the base plate is fixedly connected to the other connector 43 by screws, thereby realizing the movable connection between the base plate and the main body 1.

[0035] The outer periphery of the connector 43 or the inner periphery of the groove 42 is provided with undulating texture to enhance the fixed connection strength between the elastic rod 41 and the connector 43. Specifically, referring to the figure, the texture can be one or more protruding ribs 421 provided on the inner periphery of the groove 42, or it can be one or more recessed grooves 432 provided on the outer periphery of the connector 43. The ribs 421 and the grooves 432 can be provided individually or simultaneously. The ribs 421 and the grooves 432 increase the contact area between the connector 43 and the groove 42, thereby increasing the friction. Furthermore, the ribs 421 can also be embedded in the grooves 432, thereby further improving the connection strength.

[0036] The base plate is connected to the main body 1 through one or more elastic connecting components 4. In this embodiment, preferably, three elastic connecting components 4 are provided. The three elastic connecting components 4 are respectively located at the central axis position of the main body 1 and at the lateral sides of the central axis. The base plate is connected through three points to form a full coverage. When an obstacle collides at any position of the base plate, the nearest elastic rod 41 can provide elastic buffer. At the same time, the connection of the three elastic components to the base plate also keeps the base plate stable relative to the main body 1, and avoids excessive shaking of the base plate during normal operation of the lawnmower.

[0037] Furthermore, in order to promptly detect obstacles when the lawnmower encounters a malfunction, Hall sensors and trigger magnets are respectively fixedly installed on the main body 1 and the base plate. Under normal conditions, the trigger magnet and the Hall sensor maintain a set relative positional relationship. During normal operation of the lawnmower, the stable position of the base plate relative to the main body 1 keeps this relative positional relationship stable, and the Hall sensor is not triggered. When an obstacle is encountered, the floating and offset of the base plate relative to the main body 1 changes the relative positional relationship, thereby triggering the Hall sensor. The control unit inside the main body 1 is electrically connected to the Hall sensor and receives the trigger signal to know that the lawnmower has encountered a malfunction.

[0038] Preferably, the base plate includes a front base plate 31 and a rear base plate 32. The front base plate 31 and the rear base plate 32 are respectively disposed at the front and rear ends of the lawnmower and located on the front and rear sides of the drive wheel 2. The left and right ends of the front base plate 31 extend backward along the circumference of the main body 1 to approach the front side of the drive wheel 2, and the left and right ends of the rear base plate 32 extend forward along the circumference of the main body 1 to approach the rear side of the drive wheel 2. Thus, the front base plate 31 and the rear base plate 32 are together disposed around the outer periphery of the main body 1, covering the area other than the drive wheel 2 in the circumference of the main body 1, providing sufficient obstacle protection for the lawnmower.

[0039] Preferably, the front base plate 31 is provided with three elastic connecting components 4, and the front base plate 31 and the main body 1 are respectively provided with a set of trigger magnets and Hall sensors. The rear base plate 32 is provided with three elastic connecting components 4, and the rear base plate 32 and the main body 1 are respectively provided with a set of trigger magnets and Hall sensors.

[0040] In this embodiment, when the lawnmower encounters an obstacle on its travel path, the front and rear bottom plates 32 enable the control unit to obtain the front and rear positions of the obstacle. This allows the control unit to temporarily output drive commands for the lawnmower to move backward or forward to get away from the obstacle, thus preventing the obstacle from going further into the bottom of the lawnmower and damaging the mowing disc.

[0041] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort should fall within the protection scope of this utility model.

Claims

1. A floating structure for a lawnmower, characterized in that, It includes a main body, a base plate, and an elastic connecting assembly. The base plate is disposed at the bottom of the main body, and the elastic connecting assembly includes an elastic rod capable of elastic deformation. The two ends of the elastic rod are respectively connected to the base plate and the main body, forming a floating or offset of the base plate relative to the main body.

2. The floating structure of a lawnmower according to claim 1, characterized in that, The elastic connection assembly further includes two connectors. The two ends of the elastic rod are respectively provided with grooves. The two connectors are respectively inserted into the two grooves with an interference fit. The connectors are provided with threaded holes. The two connectors are respectively fixedly connected to the base plate and the main body.

3. The floating structure of a lawnmower according to claim 2, characterized in that, The outer periphery of the connector and / or the inner periphery of the groove are provided with an undulating texture.

4. The floating structure of a lawnmower according to claim 3, characterized in that, The texture includes raised ribs that protrude along the inner periphery of the groove, and / or recessed grooves that are recessed along the outer periphery of the connector.

5. The floating structure of a lawnmower according to claim 1, characterized in that, Hall sensors and trigger magnets are respectively provided on the main body and the base plate, and the Hall sensors and the trigger magnets are in a predetermined relative position.

6. The floating structure of a lawnmower according to claim 1, characterized in that, The resilient connection component is provided in one or more forms.

7. The floating structure of a lawnmower according to claim 6, characterized in that, The base plate is provided with three elastic connecting components, which are respectively located at the central axis position of the main body and at the lateral sides of the central axis.

8. A floating structure for a lawnmower according to any one of claims 1-7, characterized in that, The main body is provided with drive wheels at its front end along its direction of travel.

9. The floating structure of a lawnmower according to claim 8, characterized in that, The base plate includes a front base plate and a rear base plate, which are respectively disposed at the front end and the rear end of the main body.

10. The floating structure of a lawnmower according to claim 9, characterized in that, The left and right ends of the front base plate extend rearward along the circumference of the main body to approach the front side of the drive wheel, and the left and right ends of the rear base plate extend forward along the circumference of the main body to approach the rear side of the drive wheel.

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