Cutterhead assembly and mobile apparatus

Abstract

The application provides a cutter head assembly and a mobile device. The cutter head assembly comprises a base, a lifting mechanism, a cutter head support, a cutter head and a fixing mechanism. The lifting mechanism is installed on the base. The cutter head support is connected with the lifting mechanism. The cutter head is installed on the cutter head support. The lifting mechanism is used to drive the cutter head support to move the cutter head relative to the base. The fixing mechanism is installed on at least one of the lifting mechanism and the cutter head support. The fixing mechanism comprises a fixed state and a floating state. In the fixed state, the fixing mechanism fixes the lifting mechanism and the cutter head support relative to each other, so that the lifting mechanism can adjust and fix the cutter head at a preset mowing height, and the mowed lawn is kept flat. In the floating state, the fixing mechanism makes the cutter head support movable relative to the lifting mechanism. When the cutter head collides with an obstacle, the reaction force of the obstacle can make the cutter head drive the cutter head support to move relative to the lifting mechanism, so as to offset the rigid impact force of the obstacle on the cutter head, and avoid damage to the cutter head.

Description

Technical Field

[0001] This application relates to the field of tool turret technology, and more particularly to a tool turret assembly and a mobile device. Background Technology

[0002] In related technologies, the connection between the blade and the body of the lawn mower is simple, and the connection between the blade and the body cannot be adjusted. This means that the lawn mower can usually only be used in a single application scenario, thus limiting the scope of its application. Utility Model Content

[0003] This application provides a blade assembly and a mobile device to solve the problem that the connection between the blade and the body of a lawnmower cannot be adjusted.

[0004] In a first aspect, this application provides a cutter head assembly, which includes a base, a lifting mechanism, a cutter head bracket, a cutter head, and a fixing mechanism. The lifting mechanism is mounted on the base. The cutter head bracket is connected to the lifting mechanism. The cutter head is mounted on the cutter head bracket, and the lifting mechanism drives the cutter head bracket to move the cutter head relative to the base. The fixing mechanism is mounted on at least one of the lifting mechanism and the cutter head bracket, and includes a fixed state and a floating state. In the fixed state, the fixing mechanism fixes the lifting mechanism and the cutter head bracket relatively, and in the floating state, the fixing mechanism allows the cutter head bracket to move relative to the lifting mechanism.

[0005] In conjunction with the first aspect, in some implementations of the first aspect, the fixing mechanism includes a first fixing member and a second fixing member. The first fixing member is connected to the lifting mechanism, and the second fixing member is connected to the cutter head support. In the fixed state, the second fixing member is fixedly disposed relative to the first fixing member, and the cutter head support is fixedly disposed relative to the lifting mechanism. In the floating state, the second fixing member is movably disposed relative to the first fixing member, and the cutter head support is movably disposed relative to the lifting mechanism.

[0006] In conjunction with the first aspect, in some implementations of the first aspect, one of the first fixing member and the second fixing member is configured as an electromagnet, and the other of the first fixing member and the second fixing member is configured as an electromagnet or a ferromagnetic component; or; the fixing mechanism is configured as an adjustable damper, one of the first fixing member and the second fixing member is configured as the piston rod of the adjustable damper, and the other of the first fixing member and the second fixing member is configured as the cylinder of the adjustable damper.

[0007] In conjunction with the first aspect, in some implementations of the first aspect, the fixing mechanism includes a fixed part and a movable part, the movable part being movably connected to the fixed part, the fixed part being fixedly connected to one of the lifting mechanism and the cutter head support, the other of the lifting mechanism and the cutter head support being provided with a fixing groove, in the fixed state, the movable part moving relative to the fixed part into the fixing groove, and in the floating state, the movable part moving relative to the fixed part out of the fixing groove.

[0008] In conjunction with the first aspect, in some implementations of the first aspect, the lifting mechanism includes a driving member, a first transmission member, and a second transmission member. The driving member is mounted on the base, the first transmission member is rotatably connected to the base, the driving member is drively connected to the first transmission member, the second transmission member is drively connected to the first transmission member, and the cutter head bracket is attached to the side of the second transmission member opposite to the base. When the driving member drives the first transmission member to rotate, the first transmission member drives the second transmission member to move linearly, and the second transmission member drives the cutter head bracket to move relative to the base.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, the cutter head assembly further includes a stop post connected to the base, and the second transmission member is provided with a through hole, in which the stop post passes.

[0010] In conjunction with the first aspect, in some implementations of the first aspect, the cutter head assembly further includes a limiting member and a guide post, the guide post being connected to the base, the limiting member being connected to the end of the guide post away from the base, the cutter head bracket being provided with a guide hole, and the guide post passing through the guide hole.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the cutter head assembly further includes an elastic element connected between the base and the cutter head support, and / or, the elastic element is connected between the limiting member and the cutter head support.

[0012] In conjunction with the first aspect, in some implementations of the first aspect, the lifting mechanism further includes a third transmission member and a fourth transmission member, wherein the third transmission member is fixedly connected to the output shaft of the drive member, and the fourth transmission member is fixedly connected to the first transmission member and is transmissionally connected to the third transmission member.

[0013] Secondly, this application provides a mobile device, which includes a body and a cutter head assembly as described in any of the above claims, the cutter head assembly being installed in the body.

[0014] In conjunction with the second aspect, in some implementations of the second aspect, the mobile device further includes a controller, the device body is provided with buttons, the controller is connected to the buttons and the fixing mechanism respectively, the controller is used to receive instruction information sent by the buttons, and control the fixing mechanism to be in the fixed state or the floating state according to the instruction information.

[0015] In conjunction with the second aspect, in some implementations of the second aspect, the mobile device further includes a controller connected to the fixed mechanism, and the mobile device further includes a remote controller, which is communicatively connected to the controller. The controller is used to receive remote control information sent by the remote controller and to control the fixed mechanism to be in the fixed state or the floating state according to the remote control information.

[0016] In the cutter head assembly and mobile device provided in this application, based on the fixing mechanism being installed in at least one of the lifting mechanism and the cutter head bracket, in the floating state, the fixing mechanism allows the cutter head bracket to move relative to the lifting mechanism, and the cutter head is in a floating state relative to the lifting mechanism. When mowing lawns prone to hard obstacles such as branches and stones, when the cutter head collides with an obstacle, the reaction force of the obstacle can cause the cutter head to move relative to the lifting mechanism, thereby offsetting the rigid impact force of the obstacle on the cutter head and preventing damage to the cutter head. In some cases, when the mobile device travels on uneven ground, the body of the mobile device vibrates, causing the cutter head and cutter head bracket to float up and down relative to the lifting mechanism, resulting in fluctuations in the cutting height of the cutter head with the movement of the mobile device, thus causing uneven mowing of the lawn. In other cases, when the cutter head is mowing a lawn with dense grass, the grass blades exert a large reaction force on the cutter head, which can easily cause changes in the cutting height of the cutter head, resulting in uneven mowing of the lawn. In this application, when the fixing mechanism is in a fixed state, it secures the lifting mechanism and the cutter head support relative to each other, ensuring the cutter head is not floating relative to the lifting mechanism. This allows the lifting mechanism to adjust and fix the cutter head at a preset mowing height. When the mobile device travels on uneven ground or when the cutter head is mowing a dense lawn, it prevents the cutter head and cutter head support from floating relative to the lifting mechanism due to machine vibration. This also prevents the reaction force of the grass blades on the cutter head from causing changes in the mowing height, thus ensuring that the cutting height of the lawn is consistent with the preset mowing height and that the mowed lawn remains flat. By setting up the fixing mechanism and switching its working state, this application allows the cutter head and cutter head support to switch between floating and non-floating relative to the lifting mechanism. This allows the connection between the cutter head and the mobile device body to be adjusted through the fixing mechanism, improving the functional versatility of the cutter head assembly to meet different mowing needs of users in different scenarios, expanding the application range of the mobile device, and improving the user experience. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the cutter head assembly provided in the embodiments of this application; Figure 2 This is an exploded view of the cutter head assembly provided in the embodiments of this application; Figure 3This is a cross-sectional view of the cutter head assembly provided in the embodiments of this application from one perspective; Figure 4 This is a cross-sectional view of the cutter head assembly provided in an embodiment of this application from another perspective; Figure 5 This is a partial structural schematic diagram of the cutter head assembly provided in some embodiments of this application; Figure 6 This is a schematic diagram of the structure of the cutter head assembly provided in some embodiments of this application; Figure 7 This is a schematic diagram of the structure of the mobile device provided in the embodiments of this application.

[0019] Key reference numerals: Mobile device 100; Body 110; Button 111; Controller 120; Remote controller 130; Cutter head assembly 200; Base 21; Lifting mechanism 22; Drive component 221; First transmission component 222; Second transmission component 223; Fixing groove 2231; Through hole 2232; Third transmission component 224; Fourth transmission component 225; Cutter head bracket 23; Alternating hole 231; Guide hole 232; Mounting hole 233; Cutter head 24; Fixing mechanism 25; First fixing component 251; Second fixing component 252; Fixing part 253; Moving part 254; Stop post 261; Guide post 262; Limiting component 27; Elastic component 28.

[0020] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] In this document, references to "embodiment" or "implementation" mean that a particular feature, structure, or characteristic described in connection with an embodiment or implementation may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] It should be noted that the terminology in the specification, claims, and accompanying drawings of this application is for describing specific embodiments only and is not intended to limit this application. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. The term "and / or" as used in this application refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0024] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 This is a schematic diagram of the structure of the cutter head assembly 200 provided in the embodiments of this application. Figure 2 This is an exploded view of the cutter head assembly 200 provided in the embodiments of this application. Figure 3 This is a cross-sectional view of the cutter head assembly 200 provided in an embodiment of this application from one perspective. Figure 4 This is a cross-sectional view of the cutter head assembly 200 provided in an embodiment of this application from another perspective.

[0025] In this embodiment, the cutter head assembly 200 includes a base 21, a lifting mechanism 22, a cutter head bracket 23, a cutter head 24, and a fixing mechanism 25. The lifting mechanism 22 is mounted on the base 21. The cutter head bracket 23 is connected to the lifting mechanism 22. The cutter head 24 is mounted on the cutter head bracket 23. The lifting mechanism 22 drives the cutter head bracket 23 to move the cutter head 24 relative to the base 21, thereby adjusting the cutting height of the cutter head 24. The fixing mechanism 25 is mounted on at least one of the lifting mechanism 22 and the cutter head bracket 23. The fixing mechanism 25 has two working states: a fixed state and a floating state. In the fixed state, the fixing mechanism 25 keeps the lifting mechanism 22 and the cutter head bracket 23 relatively fixed. In the floating state, the fixing mechanism 25 allows the cutter head bracket 23 to move relative to the lifting mechanism 22.

[0026] In this embodiment, the fixing mechanism 25 is installed on at least one of the lifting mechanism 22 and the cutter head bracket 23. In the fixed state, the fixing mechanism 25 allows the cutter head bracket 23 to move relative to the lifting mechanism 22, and the cutter head 24 to float relative to the lifting mechanism 22. When mowing lawns that are prone to hard obstacles such as branches and stones, when the cutter head 24 collides with an obstacle, the reaction force of the obstacle can cause the cutter head 24 to move relative to the lifting mechanism 22, thereby offsetting the rigid impact force of the obstacle on the cutter head 24 and preventing damage to the cutter head 24. In some cases, when the mobile device travels on uneven ground, the body of the mobile device shakes, causing the cutter head and cutter head bracket to float up and down relative to the lifting mechanism. This causes the mowing height of the cutter head to fluctuate with the movement of the mobile device, resulting in uneven mowing of the lawn by the cutter head. In other situations, when the cutter head is mowing a lawn with dense grass, the grass blades exert a significant reaction force on the cutter head, which can easily cause changes in the cutting height and result in uneven mowing. In this application, when the fixing mechanism 25 is in a fixed state, it relatively fixes the lifting mechanism 22 and the cutter head support 23, and the cutter head 24 is in a non-floating state relative to the lifting mechanism 22. This allows the lifting mechanism 22 to adjust and fix the cutter head 24 at a preset mowing height. When the mobile equipment travels on uneven ground or when the cutter head 24 is mowing a lawn with dense grass, it prevents the cutter head 24 and cutter head support 23 from floating up and down relative to the lifting mechanism 22 due to machine vibration, and avoids changes in the cutting height of the cutter head 24 caused by the reaction force of the grass blades. This ensures that the cutting height of the cutter head 24 is consistent with the preset cutting height, keeping the mowed lawn smooth. In this embodiment, by setting a fixing mechanism 25 and switching the working state of the fixing mechanism 25, the blade disc 24 and the blade disc support 23 can switch between floating and non-floating relative to the lifting mechanism 22. This allows the connection between the blade disc 24 and the body of the mobile device to be adjusted through the fixing mechanism 25, thereby improving the functional versatility of the blade disc assembly 200. This meets the different grass-cutting needs of users in different scenarios, expands the application scenarios of the mobile device, and improves the user experience.

[0027] In this embodiment, the fixing mechanism 25 includes a first fixing member 251 and a second fixing member 252. The first fixing member 251 is connected to the lifting mechanism 22. The second fixing member 252 is connected to the blade holder 23. When the fixing mechanism 25 is in a fixed state, the second fixing member 252 is fixed relative to the first fixing member 251, and the blade holder 23 is fixed relative to the lifting mechanism 22, so that the lifting mechanism 22 can control the cutting height of the blade 24 relative to the ground at a preset height. When the fixing mechanism 25 is in a floating state, the second fixing member 252 is movable relative to the first fixing member 251, and the blade holder 23 is movable relative to the lifting mechanism 22, so that the blade 24 can float when it collides with an obstacle.

[0028] The first fixing member 251 and the second fixing member 252 are arranged opposite to each other in the lifting direction of the cutter head support 23. The first fixing member 251 and the second fixing member 252 can be aligned in the lifting direction of the cutter head support 23 to improve the connection strength of the first fixing member 251 and the second fixing member 252 in the fixed state and prevent the cutter head support 23 from moving relative to the lifting mechanism 22. In some embodiments, the first fixing member 251 and the second fixing member 252 can also be partially misaligned in the lifting direction of the cutter head support 23 to reduce the assembly difficulty of the first fixing member 251 and the second fixing member 252.

[0029] One of the first fixing member 251 and the second fixing member 252 is configured as an electromagnet, and the other of the first fixing member 251 and the second fixing member 252 is configured as an electromagnet or a ferromagnetic component. The first fixing member 251 is fixedly connected to the lifting mechanism 22. The second fixing member 252 is fixedly connected to the cutter head support 23. Exemplarily, the other of the first fixing member 251 and the second fixing member 252 is configured as a ferromagnetic component to reduce the manufacturing cost and assembly process of the cutter head assembly 200. When the electromagnet is energized, the electromagnet magnetically attracts the ferromagnetic component, thereby maintaining a relative fixation between the electromagnet and the ferromagnetic component. When the electromagnet is de-energized, the magnetic field between the electromagnet and the ferromagnetic component disappears, and the electromagnet can move freely relative to the ferromagnetic component. The ferromagnetic component can be attracted by a magnetic element with a magnetic field. The ferromagnetic component can be made of at least one of iron, cobalt, nickel, etc. It should be noted that the ferromagnetic component can be made of non-ferrous materials, such as nickel. The ferromagnetic component can be configured as a component that is itself non-magnetic.

[0030] In some embodiments, the ferromagnetic component can also be configured as a weakly magnetic element. When the electromagnet is de-energized and the external force on the cutter head support 23 is less than the magnetic force between the electromagnet and the ferromagnetic component, the electromagnet can be fixed relative to the ferromagnetic component, thereby preventing the cutter head support 23 from floating relative to the lifting mechanism 22 under small external forces. For example, when a mobile device equipped with the cutter head assembly 200 travels on gravel ground, the magnetic force between the electromagnet and the ferromagnetic component can prevent frequent vibration of the cutter head support 23, thereby reducing wear on the cutter head support 23 and reducing noise. When the electromagnet is de-energized and the external force on the cutter head support 23 is greater than the magnetic force between the electromagnet and the ferromagnetic component, the electromagnet can move freely relative to the ferromagnetic component, allowing the cutter head 24 to float and preventing damage to the cutter head 24. The magnetism of the ferromagnetic component can be specifically set according to actual needs, and is not specifically limited in this application.

[0031] For example, in this embodiment, the first fixing member 251 is configured as a ferromagnetic component, and the second fixing member 252 is configured as an electromagnet. The lifting mechanism 22 is provided with a first mounting groove, in which the ferromagnetic component is fixed. The cutter head bracket 23 is provided with a second mounting groove, in which the electromagnet is fixed. In this embodiment, by configuring the second fixing member 252 as an electromagnet, the fixing mechanism 25 is controlled to be in a fixed or floating state by energizing or de-energizing the electromagnet. This simplifies the structure of the fixing mechanism 25, eliminating the need for a complex locking structure and reducing the manufacturing cost of the cutter head assembly 200. In some embodiments, the first fixing member 251 may also be configured as an electromagnet, and the second fixing member 252 may also be configured as a ferromagnetic component.

[0032] In some embodiments, the other of the first fixing member 251 and the second fixing member 252 may also be configured as an electromagnet. When at least one of the two electromagnets is energized, the two electromagnets magnetically attract each other and remain relatively fixed. When both electromagnets are de-energized, the two electromagnets can move freely between each other.

[0033] In some embodiments, the fixing mechanism 25 is configured as an adjustable damper. One of the first fixing member 251 and the second fixing member 252 is configured as the piston rod of the adjustable damper, and the other of the first fixing member 251 and the second fixing member 252 is configured as the cylinder of the adjustable damper. The piston rod and the cylinder are damped together, and the magnitude of the damping force between the piston rod and the cylinder is adjustable. When the fixing mechanism 25 is in a fixed state, the adjustable damper is in a high damping force mode, the piston rod has a large resistance to movement relative to the cylinder, and the piston rod is difficult to move relative to the cylinder, thereby allowing the cutter head support 23 to be relatively fixed to the lifting mechanism 22. When the fixing mechanism 25 is in a floating state, the adjustable damper is in a low damping force or no damping force mode, the piston rod can move freely relative to the cylinder, thereby allowing the cutter head support 23 to move freely relative to the lifting mechanism 22. The first fixing member 251 and the lifting mechanism 22 can be fixedly connected or hingedly connected. The second fixing member 252 and the cutter head support 23 can be fixedly connected or hingedly connected.

[0034] Please see Figure 5 , Figure 5 This is a partial structural schematic diagram of the cutter head assembly provided in some embodiments of this application. Figure 5 The illustrated embodiments and Figure 1 The illustrated embodiments are similar in structure, except that the fixing mechanism 25 includes a fixing part 253 and a movable part 254. The movable part 254 is movably connected to the fixing part 253. The fixing part 253 is fixedly connected to one of the lifting mechanism 22 and the cutter head support 23. The other of the lifting mechanism 22 and the cutter head support 23 is provided with a fixing groove 2231. The fixing part 253 is used to drive the movable part 254 to move, so that the movable part 254 moves into or out of the fixing groove 2231. When the fixing mechanism 25 is in a fixed state, the movable part 254 moves relative to the fixing part 253 into the fixing groove 2231, so that the movable part 254 and the fixing groove 2231 are in a snap-fit ​​state. When the cutter head 24 is subjected to external force, the movable part 254 abuts against the groove wall of the fixing groove 2231, thereby restricting the floating of the cutter head 24 and the cutter head support 23 relative to the lifting mechanism 22. When the fixed mechanism 25 is in a floating state, the movable part 254 moves relative to the fixed part 253 beyond the fixed groove 2231, thereby eliminating structural interference between the movable part 254 and the fixed groove 2231, allowing the cutter head 24 and the cutter head support 23 to float relative to the lifting mechanism 22. For example, the fixed part 253 can be fixedly connected to the cutter head support 23, and the lifting mechanism 22 is provided with the fixed groove 2231.

[0035] In some embodiments, the fixing mechanism 25 can be configured as a solenoid valve, the fixing part 253 is configured as the main body of the solenoid valve, and the movable part 254 is configured as the movable part of the solenoid valve. An electromagnetic drive mechanism is provided in the main body to drive the movable part to extend or retract relative to the main body. In the fixed state, the solenoid valve controls the movable part to extend relative to the main body, so that the movable part extends into the fixing groove 2231. In the floating state, the solenoid valve controls the movable part to retract relative to the main body, so that the movable part moves out of the fixing groove 2231.

[0036] In some embodiments, the fixing mechanism 25 may also be configured as an electric actuator, with the fixing part 253 configured as the drive body of the electric actuator and the movable part 254 configured as the push rod of the electric actuator. In the fixed state, the drive body drives the push rod to extend, causing the push rod to extend into the fixing groove 2231. In the floating state, the drive body drives the push rod to retract, causing the push rod to move out of the fixing groove 2231.

[0037] In some embodiments, the fixing mechanism 25 may also be configured as a cylinder, with the fixing part 253 configured as the cylinder body and the movable part 254 configured as the piston rod. In the fixed state, the cylinder body drives the piston rod to extend into the fixing groove 2231. In the floating state, the cylinder body drives the piston rod to move out of the fixing groove 2231.

[0038] In some embodiments, the fixing mechanism 25 may also be configured as other structures, which are not specifically limited in this application. For example, the fixing mechanism 25 may also be configured as a screw mechanism, with the fixing part 253 configured as a nut and a driver, and the moving part 254 configured as a screw. When the driver drives the nut to rotate, the nut can drive the screw to extend towards the fixing groove 2231 or retract away from the fixing groove 2231.

[0039] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4 The lifting mechanism 22 includes a driving member 221, a first transmission member 222, and a second transmission member 223. The driving member 221 is mounted on the base 21. The first transmission member 222 is rotatably connected to the base 21. The driving member 221 is drively connected to the first transmission member 222 and drives the first transmission member 222 to rotate relative to the base 21. The second transmission member 223 is drively connected to the first transmission member 222. The cutter head support 23 rests on the side of the second transmission member 223 facing away from the base 21. When the driving member 221 drives the first transmission member 222 to rotate, the first transmission member 222 drives the second transmission member 223 to move linearly, and the second transmission member 223 drives the cutter head support 23 to move relative to the base 21.

[0040] When the first transmission member 222 drives the second transmission member 223 to move away from the base 21, the second transmission member 223 can push the cutter head support 23 to move, causing the cutter head support 23 to move away from the base 21. When the first transmission member 222 drives the second transmission member 223 to move closer to the base 21, the cutter head support 23 can move together with the second transmission member 223 towards the base 21 under the action of gravity. The cutter head support 23 is attached to the side of the second transmission member 223 away from the base 21. When the fixing mechanism 25 is in a floating state, the cutter head support 23 can move freely relative to the second transmission member 223 away from the base 21 under the action of external force, thereby realizing the floating of the cutter head support 23.

[0041] The drive component 221 can be configured as a motor. The first transmission component 222 and the second transmission component 223 convert rotary motion into linear motion, so that when the output shaft of the drive component 221 rotates, the second transmission component 223 drives the tool holder 23 to rise and fall. The first transmission component 222 and the second transmission component 223 are threaded together. The first transmission component 222 has a cylindrical structure, and its outer peripheral wall is provided with external threads. The second transmission component 223 is sleeved on the first transmission component 222, and its internal threads are provided to mate with the external threads. When the first transmission component 222 rotates, the second transmission component 223 moves linearly due to the engagement of the internal and external threads. The tool holder 23 is provided with a mounting hole 233. The first transmission component 222 passes through the mounting hole 233.

[0042] In some embodiments, the cutter head assembly 200 further includes a stop post 261. The stop post 261 is connected to the base 21. The second transmission member 223 is provided with a through hole 2232. The stop post 261 passes through the through hole 2232. The stop post 261 extends along the lifting direction of the cutter head support 23. The stop post 261 is used to guide the second transmission member 223 and to limit the rotation of the second transmission member 223 relative to the cutter head support 23, so that when the first transmission member 222 rotates, it can rotate relative to the second transmission member 223, thereby causing the second transmission member 223 to move toward or away from the base 21, thereby driving the cutter head support 23 and the cutter head 24 to lift and lower. The cutter head support 23 is provided with a clearance hole 231, and the stop post 261 passes through the clearance hole 231.

[0043] In some embodiments, a single stop post 261 may be used to reduce the manufacturing cost and assembly difficulty of the cutter head assembly 200. In some embodiments, multiple stop posts 261 may be used, arranged at intervals, to improve the smoothness of the second transmission member 223 during movement through the common guidance of the multiple stop posts 261. The number of through holes 2232 and clearance holes 231 are both set to be the same as the number of stop posts 261. Exemplarily, two stop posts 261 may be used, located on opposite sides of the first transmission member 222.

[0044] The shape of the cross-section of the stop post 261 (the cross-section perpendicular to the central axis of the stop post 261) can be the same as or different from the shape of the cross-section of the through hole 2232. For example, the shape of the cross-section of the stop post 261 and the shape of the cross-section of the through hole 2232 can be circular, elliptical, triangular, rectangular, pentagonal, hexagonal, regular or irregular polygon, irregular shape, etc.

[0045] In some embodiments, the outer wall of the stop post 261 and / or the wall of the through hole 2232 are provided with wear-resistant portions to reduce wear on the stop post 261 and the second transmission member 223, thereby extending the service life of the stop post 261 and the second transmission member 223. The wear-resistant portions may be configured as a wear-resistant coating provided on the outer wall of the stop post 261 and / or the wall of the through hole 2232. In some embodiments, the stop post 261 and / or the second transmission member 223 may be made of a wear-resistant material.

[0046] In some embodiments, the cutter head assembly 200 further includes guide posts 262 connected to the base 21. The cutter head support 23 is provided with guide holes 232. The guide posts 262 pass through the guide holes 232. The guide posts 262 extend along the lifting direction of the cutter head support 23. The guide posts 262 are used to guide the cutter head support 23 and to limit rotation of the cutter head support 23 relative to the base 21, allowing the cutter head support 23 to move in a direction toward or away from the base 21. One or more guide posts 262 can be provided. The number of guide holes 232 is the same as the number of guide posts 262. Exemplarily, four guide posts 262 can be provided, arranged in a rectangular shape.

[0047] In some embodiments, the cutter head assembly 200 further includes a limiting member 27. The limiting member 27 is connected to the end of the guide post 262 away from the base 21. The limiting member 27 is used to limit the maximum upward stroke of the cutter head support 23 to avoid collision or interference between the cutter head support 23 and other structures. The limiting member 27 is disposed opposite to the base 21. A movable space for the cutter head support 23 is formed between the limiting member 27 and the base 21.

[0048] Please refer to the following: Figure 1 and Figure 6 , Figure 6 This is a schematic diagram of the structure of the cutter head assembly 200 provided in some embodiments of this application. In some embodiments, the cutter head assembly 200 further includes an elastic element 28. The elastic element 28 is connected between the base 21 and the cutter head support 23, and / or, the elastic element 28 is connected between the limiting element 27 and the cutter head support 23. When the cutter head support 23 is subjected to an external force, the elastic element 28 can undergo elastic deformation and provide an elastic force to the cutter head support 23 in the direction of the base 21, thereby providing elastic cushioning for the cutter head support 23, reducing the rigid impact force on the cutter head 24 and the cutter head support 23, reducing the risk of damage to the cutter head 24 and the cutter head support 23, and preventing the cutter head support 23 from easily vibrating under small external forces, improving the stability of the cutter head support 23, reducing noise, reducing wear on the cutter head support 23, and extending its service life. For example, when a mobile device equipped with the cutter head assembly 200 travels on a gravel surface, the elastic force provided by the elastic element 28 can prevent the cutter head support 23 from vibrating frequently, thereby reducing wear on the cutter head support 23 and reducing noise. After the external force disappears, under the action of the elastic force provided by the elastic element 28, the cutter head support 23 is attached to the side of the second transmission element 223 away from the base 21.

[0049] In some embodiments, an elastic element 28 is connected between the base 21 and the cutter head support 23. One end of the elastic element 28 is fixedly connected to the base 21, and the other end of the elastic element 28 is fixedly connected to the cutter head support 23. When the cutter head support 23 moves away from the base 21, the elastic element 28 is stretched, and the elastic element 28 provides an elastic force to the cutter head support 23 in a direction closer to the base 21.

[0050] In some embodiments, the elastic element 28 is connected between the limiting element 27 and the cutter head support 23. One end of the elastic element 28 abuts against or is fixed to the limiting element 27, and the other end of the elastic element 28 abuts against or is fixed to the cutter head support 23. When the cutter head support 23 moves away from the base 21, the elastic element 28 is compressed, and the elastic element 28 provides an elastic force to the cutter head support 23 in a direction closer to the base 21.

[0051] In some embodiments, the elastic element 28 may be provided in multiple forms. A portion of the multiple elastic elements 28 is connected between the base 21 and the cutter head support 23, and another portion of the multiple elastic elements 28 is connected between the limiting element 27 and the cutter head support 23.

[0052] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4The lifting mechanism 22 further includes a third transmission member 224 and a fourth transmission member 225. The third transmission member 224 is fixedly connected to the output shaft of the drive member 221. The fourth transmission member 225 is fixedly connected to the first transmission member 222 and is drively connected to the third transmission member 224. The drive member 221 drives the third transmission member 224 to rotate via the output shaft. When the third transmission member 224 rotates, it drives the fourth transmission member 225 and the first transmission member 222 to rotate. When the first transmission member 222 rotates, it drives the second transmission member 223 to move up and down along the axial direction of the first transmission member 222. The third transmission member 224 and the fourth transmission member 225 can each be configured as gears.

[0053] Please refer to the following: Figure 1 , Figure 2 and Figure 7 , Figure 7 This is a schematic diagram of the structure of the mobile device 100 provided in an embodiment of this application. This application also provides a mobile device 100. The mobile device 100 includes a body 110 and a blade assembly 200 as described in any embodiment of this application. The blade assembly 200 is installed in the body 110. The mobile device 100 can be configured as a lawnmower. The blade assembly 200 is used for mowing lawns.

[0054] The mobile device 100 also includes a controller 120. A button 111 is provided on the body 110. The controller 120 is connected to both the button 111 and the fixing mechanism 25. When the button 111 is pressed, it generates a command message. The controller 120 receives the command message from the button 111 and controls the fixing mechanism 25 to be in a fixed or floating state based on the command message. The user can determine whether to press the button 111 based on the lawn conditions encountered by the mobile device 100, thus adjusting the blade holder 23 to either a floating or non-floating state.

[0055] In some embodiments, button 111 can be configured as one, and controller 120 determines the working state that the fixing mechanism 25 should be in after the user presses button 111 by the number of times button 111 is pressed, the duration of the press, and the current working state of the fixing mechanism 25. For example, when button 111 is pressed briefly, a first type of instruction information is generated, and controller 120 controls the fixing mechanism 25 to be in a fixed state according to the first type of instruction information. When button 111 is pressed for a long time (the press time is longer than the short press), a second type of instruction information is generated, and controller 120 controls the fixing mechanism 25 to be in a floating state according to the second type of instruction information. In some embodiments, button 111 can also be configured as two, and controller 120 is used to control the fixing mechanism 25 to be in a fixed state when one button 111 is pressed, and to control the fixing mechanism 25 to be in a floating state when the other button 111 is pressed.

[0056] In some embodiments, button 111 may be configured as a physical button on the body 110. In some embodiments, a display screen may be provided on the body 110, and button 111 may be configured as a virtual button on the display screen.

[0057] In some embodiments, the mobile device 100 further includes a controller 120 connected to the fixing mechanism 25. The mobile device 100 also includes a remote controller 130. The remote controller 130 is communicatively connected to the controller 120. The controller 120 is used to receive remote control information sent by the remote controller 130 and to control the fixing mechanism 25 to be in a fixed or floating state according to the remote control information. Thus, the user can remotely control the mobile device 100 through the remote controller 130, improving the convenience of user operation and enhancing the user experience. The remote controller 130 can be configured as a mobile phone, a control box, a remote control device, etc. For example, the remote controller 130 can be configured as a mobile phone with an application corresponding to the mobile device 100 installed on it. The user can send remote control information to the mobile device 100 through buttons in the user interface provided by the application.

[0058] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A cutter head assembly, characterized in that, include: Base; A lifting mechanism is installed on the base; The cutter head support is connected to the lifting mechanism; A cutter head, which is mounted on a cutter head bracket, and a lifting mechanism is used to drive the cutter head bracket to move the cutter head relative to the base; A fixing mechanism is installed on at least one of the lifting mechanism and the cutter head support. The fixing mechanism includes a fixed state and a floating state. In the fixed state, the fixing mechanism fixes the lifting mechanism and the cutter head support relative to each other. In the floating state, the fixing mechanism allows the cutter head support to move relative to the lifting mechanism.

2. The cutter head assembly according to claim 1, characterized in that, The fixing mechanism includes a first fixing member and a second fixing member. The first fixing member is connected to the lifting mechanism, and the second fixing member is connected to the cutter head bracket. In the fixed state, the second fixing member is fixed relative to the first fixing member, and the cutter head bracket is fixed relative to the lifting mechanism. In the floating state, the second fixing member is movable relative to the first fixing member, and the cutter head bracket is movable relative to the lifting mechanism.

3. The cutter head assembly according to claim 2, characterized in that, One of the first fixing member and the second fixing member is configured as an electromagnet, and the other of the first fixing member and the second fixing member is configured as an electromagnet or a ferromagnetic component, or; The fixing mechanism is configured as an adjustable damper, one of the first fixing member and the second fixing member is configured as the piston rod of the adjustable damper, and the other of the first fixing member and the second fixing member is configured as the cylinder of the adjustable damper.

4. The cutter head assembly according to claim 1, characterized in that, The fixing mechanism includes a fixed part and a movable part. The movable part is movably connected to the fixed part. The fixed part is fixedly connected to one of the lifting mechanism and the cutter head support. The other of the lifting mechanism and the cutter head support is provided with a fixing groove. In the fixed state, the movable part moves relative to the fixed part into the fixing groove. In the floating state, the movable part moves relative to the fixed part out of the fixing groove.

5. The cutter head assembly according to any one of claims 1-4, characterized in that, The lifting mechanism includes a driving component, a first transmission component, and a second transmission component. The driving component is mounted on the base. The first transmission component is rotatably connected to the base. The driving component is drively connected to the first transmission component. The second transmission component is drively connected to the first transmission component. The cutter head support is attached to the side of the second transmission component away from the base. When the driving component drives the first transmission component to rotate, the first transmission component drives the second transmission component to move linearly. The second transmission component drives the cutter head support to move relative to the base.

6. The cutter head assembly according to claim 5, characterized in that, The cutter head assembly also includes a stop post connected to the base, and the second transmission member is provided with a through hole, through which the stop post passes.

7. The cutter head assembly according to any one of claims 1-4, characterized in that, The cutter head assembly further includes a limiting member and a guide post. The guide post is connected to the base, and the limiting member is connected to the end of the guide post away from the base. The cutter head bracket is provided with a guide hole, and the guide post passes through the guide hole.

8. The cutter head assembly according to claim 7, characterized in that, The cutter head assembly further includes an elastic element connected between the base and the cutter head support, and / or, the elastic element connected between the limiting element and the cutter head support.

9. The cutter head assembly according to claim 5, characterized in that, The lifting mechanism further includes a third transmission component and a fourth transmission component. The third transmission component is fixedly connected to the output shaft of the drive component, and the fourth transmission component is fixedly connected to the first transmission component and is connected to the third transmission component in a transmission connection.

10. A mobile device, characterized in that, The mobile device includes a body and a cutter head assembly as described in any one of claims 1-9, the cutter head assembly being mounted in the body.

11. The mobile device according to claim 10, characterized in that, The mobile device also includes a controller. The device body is provided with buttons. The controller is connected to the buttons and the fixing mechanism respectively. The controller is used to receive instruction information sent by the buttons and control the fixing mechanism to be in the fixed state or the floating state according to the instruction information.

12. The mobile device according to claim 10 or 11, characterized in that, The mobile device also includes a controller connected to the fixed mechanism, and the mobile device also includes a remote controller. The remote controller is communicatively connected to the controller. The controller is used to receive remote control information sent by the remote controller and to control the fixed mechanism to be in the fixed state or the floating state according to the remote control information.

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