Garden tool wheel carrier assembly and mowing device with same

Abstract

The utility model provides a gardening tool wheel carrier assembly and a mowing device with the gardening tool wheel carrier assembly, the gardening tool wheel carrier assembly comprises a hub structure, the hub structure comprises a hub and a motor connected with the hub, the motor comprises a fixed shaft and a rotor shell rotating relative to the fixed shaft, and the rotor shell is connected with the hub to drive the hub to rotate; the wheel shaft comprises a connecting section; a connecting hole matched with at least part of the connecting section is formed in the fixing shaft, and at least part of the connecting section is inserted into the connecting hole; the first fastening part is arranged on the connecting section; and the second fastening part is connected with the fixing shaft, so that the connecting section and the fixing shaft are locked through cooperation of the first fastening part and the second fastening part. According to the technical scheme provided by the utility model, the small-sized assembly of the gardening tool wheel carrier assembly can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to garden tool technical field, specifically, garden tool wheel frame assembly and the mowing device with it of a garden tool. BACKGROUND

[0002] At present, the existing mowing device generally adopts the driving structure of motor, gear box and clutch to realize power driving, but the driving mode corresponding to the above driving structure often has the following technical defects: insufficient reliability of clutch: mechanical clutch is often limited by physical wear and tear and tolerance accumulation, and has the risk of occasional clutch failure, which easily leads to wheel system jamming or power interruption, seriously affecting the operation safety; many parts, inconvenient to install: during the installation process, the structures such as motor, gear box and clutch need to be installed one by one, which is not convenient for quick disassembly and assembly, and is not convenient for subsequent maintenance. In addition, the existing mowing device adopts a hub motor, but the flange needs to be fixed outside the rear wheel, the installation mode of the wheel needs to be locked from the inside to the outside, the assembly is complicated, and in the mowing process, the grass clippings are jammed, which is not convenient to maintain; some adopt the motor form of end shaft, which makes the installation shaft longer, and more assembly space needs to be reserved, so that the width of the whole machine increases, thereby being not conducive to the miniaturization structure assembly of the whole machine. SUMMARY

[0003] Therefore, the utility model aims at providing a garden tool wheel frame assembly and a mowing device with the same, which are convenient for miniaturization assembly.

[0004] In order to achieve the above-mentioned purpose, the technical scheme provided by an embodiment of the utility model is as follows:

[0005] A garden tool wheel frame assembly, comprising: a hub structure, comprising a hub and a motor connected with the hub, the motor comprising a fixed shaft and a rotor shell rotating relative to the fixed shaft, the rotor shell being connected with the hub to drive the hub to rotate; a wheel shaft, comprising a connecting section; the fixed shaft is provided with a connecting hole matched with at least part of the connecting section, and at least part of the connecting section is inserted into the connecting hole; a first fastening part is arranged on the connecting section; a second fastening part is connected with the fixed shaft to lock the connecting section and the fixed shaft through cooperation of the first fastening part and the second fastening part. By arranging the connecting hole on the fixed shaft of the motor and cooperating with the connecting section of the wheel shaft, and through the locking cooperation of the first fastening part and the second fastening part, the locking connection of the connecting section and the fixed shaft can be ensured, and the installation is convenient. Compared with the motor installation mode of the end shaft in the prior art, the fixed shaft of the motor in the utility model can be directly sleeved on at least part of the connecting section, thereby reducing the width of the wheel frame assembly in the extension direction of the wheel shaft, thereby facilitating the miniaturization assembly of the wheel frame assembly, reducing the space size occupied by the wheel frame assembly, and facilitating the overall miniaturization of the mowing device.

[0006] Further, the first fastening part is a first external thread arranged on the connecting segment, the second fastening part is a first internal thread arranged in the connecting hole, and the first internal thread is matched with the first external thread. In this way, the structure is simple, the production and manufacturing are facilitated, and the fastening and connecting of the connecting segment and the fixing shaft are facilitated, thereby ensuring the installation stability of the motor.

[0007] Further, the connecting hole is a through hole, facilitating the production and manufacturing; or the connecting hole is a blind hole, and the end of the at least part of the connecting segment abuts against the blind hole end of the connecting hole, so as to abut and position the at least part of the connecting segment, to ensure the effective connecting length of the connecting segment and the connecting hole and improve the locking and connecting stability of the connecting segment and the connecting hole.

[0008] Further, the first fastening part is a limiting part, the second fastening part is a clamping piece matched with the limiting part, and the clamping piece abuts against the end of the fixing shaft. The clamping and matching of the limiting part and the clamping piece in combination with the abutment of the clamping piece and the end of the fixing shaft makes the connection of the fixing shaft and the connecting segment stable, thereby facilitating the stable operation of the wheel carrier assembly and simplifying the structure and facilitating the installation.

[0009] Further, the second fastening part includes an abutment segment for abutting against the end of the fixing shaft; at least part of the second fastening part and one of the first fastening parts are provided with a locking opening; and the other of the second fastening part and the first fastening part forms a locking segment matched with the locking opening. With such a structure, the production and manufacturing are facilitated, the locking opening and the locking segment are locked in a plug-in manner, the locking is firm, and the installation stability of the motor is improved.

[0010] Further, a second internal thread is arranged on the inner wall of the locking opening, a second external thread matched with the second internal thread is arranged on the locking segment, the locking connection of the second internal thread and the second external thread is reliable, and the stable connection of the fixing shaft and the connecting segment is facilitated; or a first clamping structure is arranged on the inner wall of the locking opening, a second clamping structure matched with the first clamping structure is arranged on the locking segment, the clamping connection of the first clamping structure and the second clamping structure is reliable, and the stable clamping of the fixing shaft and the connecting segment is facilitated.

[0011] Further, the motor further includes: a stator fixedly arranged on the fixing shaft; and a bearing, an inner ring of the bearing is connected with the fixing shaft, and an outer ring of the bearing is connected with the rotor shell. With such an arrangement, the structural layout of the motor is optimized, and the stable assembly and normal operation of the motor are ensured.

[0012] Further, the connecting segment comprises a first segment and a second segment connected with each other, the outer peripheral wall of the second segment is arranged protruding from the outer peripheral wall of the first segment, the first segment is inserted into the connecting hole, and the second segment abuts against the end of the fixing shaft. By arranging the outer peripheral wall of the second segment to protrude from the outer peripheral wall of the first segment and abut against the end of the fixing shaft, the insertion position of the connecting segment in the connecting hole can be positioned and limited by the positioning step formed at the connection between the second segment and the first segment, thereby positioning and limiting the connection position of the connecting segment and the fixing shaft, and the connection of the second fastening part and the fixing shaft can facilitate better guarantee that the connecting segment is stably locked on the fixing shaft, and further improve the overall structural stability of the wheel carrier assembly.

[0013] Further, the wheel hub structure, the connecting segment and the second fastening part are two in number, the wheel shaft further comprises a main body segment, the two connecting segments are arranged at the two ends of the main body segment respectively, the two wheel hub structures are arranged in one-to-one correspondence with the two connecting segments, and each wheel hub structure is connected with the corresponding connecting segment and locked in cooperation with the corresponding second fastening part. With such a structural arrangement, the stable installation and connection of the two wheel hub structures can be facilitated, thereby guaranteeing the installation stability of the overall structure of the wheel carrier assembly.

[0014] Further, the fixing shaft of each wheel hub structure has a first insertion end and a second insertion end arranged oppositely, the first insertion end is located close to one end of the main body segment, at least part of the connecting segment is inserted into the connecting hole through the first insertion end, and at least part of the second fastening part locks the connecting segment and the fixing shaft at the second insertion end. With such a structure, the installation and locking operation of the wheel hub structure and the connecting shaft are facilitated, and the installation operation of the staff is facilitated.

[0015] Further, the wheel shaft further comprises a main body segment connected with the connecting segment; and the wheel carrier assembly further comprises a wiring structure, the wiring structure has a wire inlet, a wire outlet and a wiring channel communicated with the wire inlet and the wire outlet, and the wiring structure is connected with the main body segment. With such a structural arrangement, the wire of the motor can be guided conveniently, the wiring connection of the wire is facilitated, and the wire can be protected by the wiring structure to avoid damage of the wire during operation of the wheel carrier assembly.

[0016] Further, the wheel shaft further comprises a fixing plate connected with the end of the main body segment, the connecting segment is connected with the fixing plate and extends away from the main body segment, and the wiring structure is mounted on the fixing plate. By arranging the fixing plate and mounting the connecting segment and the wiring structure on the fixing plate, the setting stability of the connecting segment and the wiring structure can be improved, and the wiring structure can be made closer to the position of the motor, thereby facilitating better protection of the wire of the motor by the wiring structure.

[0017] Further, the axis of the main body section is arranged in parallel with the axis of the connecting section, which can facilitate optimization of the structural layout of the wheel carrier assembly; and / or at least part of the wiring structure extends in the preset direction, and at least part of the wiring structure is arranged in parallel with the axis of the main body section, which can facilitate optimization of the structural layout of the wheel carrier structure and improve the compactness of the structural layout.

[0018] Further, the wiring structure is made of insulating material to avoid leakage of the lines in the wiring structure and improve the safety of the wiring structure; and / or the wiring structure comprises first and second pipe sections connected to each other and at a preset angle, the first pipe section extends in the preset direction, and the first pipe section is parallel to the main body section, which can facilitate optimization of the structural layout of the wiring structure and facilitate guiding of the lines in the wiring structure to the preset position, which can be an electrical component on the machine body connected to the wheel carrier assembly.

[0019] Further, the wiring structure is two; the two wiring structures are connected to the two ends of the main body section, and the two wiring structures are arranged in one-to-one correspondence with the two hub structures at the two ends of the main body section, and the lines of the motor of each hub structure are installed on the corresponding wiring structure. In this way, the lines of the motor on each hub structure can be guided, and the lines of the motors of the two hub structures can be protected.

[0020] Further, each wiring structure comprises first and second pipe sections connected to each other and at a preset angle, the first pipe section extends in the preset direction, and the first pipe section is parallel to the main body section, and the second pipe section of one wiring structure is connected to the second pipe section of the other wiring structure. With such a structure, the stability of the arrangement and connection of the two wiring structures can be improved, and the wiring structure can be prevented from shaking or being unstable during operation of the wheel carrier assembly, thereby preventing the lines in the wiring structure from being damaged due to unstable installation of the wiring structure, and preventing the motor from being accurately driven and controlled due to damage to the lines.

[0021] Further, the wheel carrier assembly further comprises a connecting piece arranged between and connected to the second pipe sections of the two wiring structures. In this way, the two wiring structures can be better connected through the connecting piece, thereby improving the stability of the arrangement of the two wiring structures and improving the stability of the wiring. In addition, the above structure can also facilitate optimization of the structural layout of the connecting piece and improve the compactness of the connecting layout.

[0022] Further, the connecting piece has a first connecting edge which is adapted to and connected with the transition of the first pipe section and the second pipe section of one wiring structure and the second pipe section of the wiring structure, and / or the connecting piece has a second connecting edge which is adapted to and connected with the transition of the first pipe section and the second pipe section of another wiring structure and the second pipe section of the wiring structure. By setting the first connecting edge and connecting, it can be better connected with one wiring structure to better improve the stability of the connection of the wiring structure. By setting the second connecting edge and connecting, it can be better connected with another wiring structure to better improve the stability of the connection of the wiring structure.

[0023] Further, the wheel shaft further comprises a fixing plate connected with the end of the main body section, the wiring structure and the fixing shaft are located on two sides of the fixing plate respectively, and the line of the motor is led out from the fixing shaft and connected to the wiring structure. In this way, the structural layout of the wheel shaft and the wiring structure can be optimized, and the line of the motor can be guided through the wiring structure, so that the line of the motor can be smoothly guided to the electrical components of the body on which the wheel assembly is installed, thereby facilitating control of the motor.

[0024] The utility model also provides a grass cutting device, including the garden tool wheel assembly provided above.

[0025] The utility model has the advantages of: the connecting hole is arranged on the fixing shaft of the motor and matched with the connecting section of the wheel shaft, the first fastening part and the second fastening part are locked and matched to guarantee the locking connection between the connecting section and the fixing shaft, the structure is simple and convenient to install. In addition, the fixing shaft of the motor in the application can be directly sleeved on at least part of the connecting section, avoiding the situation that the end shaft motor is installed on the end of the wheel shaft, which causes the width of the wheel assembly in the extension direction of the wheel shaft to be too large, thereby facilitating the miniaturization assembly of the wheel assembly, and further facilitating the overall miniaturization of the grass cutting device. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0027] Figure 1 The utility model provides a garden tool wheel assembly's cross section view for one specific embodiment of the utility model;

[0028] Figure 2A partial sectional view of the garden tool wheel frame assembly is provided for one specific embodiment of the present application.

[0029] Figure 3 A structure schematic view of one perspective of the wheel shaft and wiring structure is provided for one specific embodiment of the present application.

[0030] Figure 4 A structure schematic view of one perspective of the wheel shaft and wiring structure is provided for one specific embodiment of the present application.

[0031] Figure 5 A structure schematic view of one perspective of the wheel shaft and wiring structure is provided for one specific embodiment of the present application.

[0032] Figure 6 A structure schematic view of one perspective of the wheel shaft and wiring structure is provided for one specific embodiment of the present application.

[0033] Among them, the above-mentioned drawings include the following figure marks:

[0034] 10, hub structure; 11, hub; 12, motor; 121, line; 122, rotor shell; 123, stator; 13, bearing; 14, fixed shaft; 15, tire skin;

[0035] 20, wheel shaft; 21, main body section; 22, connecting section; 221, first section; 2211, circular arc outer wall surface; 2212, second rotation-stopping plane; 222, second section; 223, locking opening; 23, fixed plate;

[0036] 30, second fastening part; 31, locking section; 32, abutting section;

[0037] 40, wiring structure; 41, first pipe section; 42, second pipe section; 43, wiring connecting pipe;

[0038] 60, connecting piece; 61, first connecting edge; 62, second connecting edge; 63, third connecting edge; 64, fourth connecting edge. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0041] It should be noted that: similar signs and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0042] In the description of the embodiments of the present application, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly understood by those skilled in the art, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0043] In the description of the embodiments of the present application, it should also be noted that unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] In the description of the embodiments of the present application, it should also be noted that "first", "second", etc. used in this paper do not mean to specially indicate the order or sequence, nor to limit the case, but only to distinguish the components or operations described with the same technical terms.

[0045] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0046] The technical solutions in the present application will be described below with reference to the drawings.

[0047] In order to solve the technical problem of excessive width of the garden tool wheel carrier assembly in the extension direction of the wheel shaft in the prior art, the present application provides a garden tool wheel carrier assembly and a grass cutting device with the same. The grass cutting device comprises the garden tool wheel carrier assembly provided above.

[0048] To achieve the above object, the technical scheme provided by an embodiment of the utility model is as follows:

[0049] As Figures 1 to 6 shown, the utility model provides a garden tool wheel frame assembly. Figure 1 and 2 As shown in the drawings, the garden tool wheel frame assembly comprises a hub structure 10, a wheel shaft 20, a first fastening part and a second fastening part 30, the hub structure 10 comprises a hub 11 and a motor 12 connected with the hub 11, the motor 12 comprises a fixed shaft 14, a rotor shell 122 rotating relative to the fixed shaft 14, the rotor shell 122 is connected with the hub 11 to drive the hub 11 to rotate. The wheel shaft 20 comprises a connecting section 22;The fixed shaft 14 is provided with a connecting hole matched with at least part of the connecting section 22, and at least part of the connecting section 22 is inserted in the connecting hole. The first fastening part is arranged on the connecting section 22;The second fastening part 30 is connected with the fixed shaft 14 to lock the connecting section 22 and the fixed shaft 14 through the locking of the first fastening part and the second fastening part 30.

[0050] The garden tool wheel frame assembly provided by the embodiment can ensure the locking connection of the connecting section 22 and the fixed shaft 14 by arranging the connecting hole on the fixed shaft 14 of the motor 12 and cooperating with the connecting section 22 of the wheel shaft 20 and through the locking of the first fastening part and the second fastening part 30. Compared with the mounting mode of the motor shaft of the hub motor protruding and mounted at the end of the hub in the prior art, the fixed shaft 14 of the motor 12 in the application can be directly sleeved on at least part of the connecting section 22, thereby reducing the width of the wheel frame assembly in the extension direction of the wheel shaft 20, facilitating the miniaturization assembly of the garden tool wheel frame assembly, and further facilitating the miniaturization assembly of the whole machine with the garden tool wheel frame assembly.

[0051] In addition, the rotor shell 122 of the motor 12 is directly connected with the hub 11, and the torque generated by the motor is directly used to drive the hub 11 to rotate, thereby realizing power transmission without intermediate transmission link. The above structure does not need to be transmitted through a transmission structure, which not only simplifies the structure, but also improves the power transmission efficiency, the response speed is fast, the hub 11 speed can be adjusted in time, thereby improving the control performance and operation efficiency of the garden tool. The garden tool wheel frame assembly in the embodiment can be applied to a mowing device, when the user starts the mowing device, the motor 12 directly drives the hub 11 to rotate, without passing through a gear box and a clutch, reducing power loss and ensuring stable power output.

[0052] Specifically, the garden tool in the embodiment mainly is a mowing device, and the mowing device is used for mowing lawns. The garden tool wheel assembly in the embodiment is particularly advantageous when used in a working environment that needs to frequently adjust the speed or direction. When a user starts the mowing device, the motor 12 quickly responds to drive the wheel hub 11 to rotate, so that the mowing device advances or turns, and the use flexibility of the mowing device is improved.

[0053] Specifically, the wheel hub structure 10 further includes a tire 15 mounted on the wheel hub 11.

[0054] In the first embodiment of the present application, the first fastening part is a first external thread arranged on the connecting section 22, and the second fastening part 30 is a first internal thread arranged in the connecting hole and matched with the first external thread. In this way, the structure is simple, easy to manufacture, and can ensure the fastening and connecting of the connecting section 22 and the fixed shaft 14, thereby ensuring the installation stability of the motor 12. The mechanical locking is formed by the engagement of the internal and external threads through the threaded connection, so as to resist the shear force and the pulling force, ensure the stability of the connection, enhance the mechanical strength of the connection, prevent loosening or falling off of the wheel assembly during the working process, ensure the safety and stability of the equipment, achieve the locking purpose, and ensure the close connection of the motor and the wheel shaft. At the same time, only the fixed shaft part needs to be gripped to achieve the tightening action, and the operation is convenient.

[0055] Specifically, in this embodiment, the connecting hole is a through hole, and the through hole structure is simple and easy to produce. Alternatively, in this embodiment, the connecting hole is a blind hole, and the end of at least part of the connecting section 22 abuts against the blind hole end of the connecting hole, so as to abut and position at least part of the connecting section 22, so as to ensure the effective connecting length of the connecting section 22 and the connecting hole and improve the stability of the locking connection of the connecting section 22 and the connecting hole. Specifically, the selection of the through hole or the blind hole is based on the requirement of the connecting structure formed by the connecting hole and the connecting section 22 and the limitation of the design space. In fact, no matter which hole type is used, the effective connection of the motor and the wheel shaft can be ensured. In addition, the blind hole design can also hide part of the connecting section 22, improve the neatness of the appearance of the equipment, and better protect the connecting section 22 from external damage. In the production design, the through hole or the blind hole can be selected correspondingly, the connecting section 22 is inserted into the corresponding hole, and then the fastening part is used for fixing.

[0056] In the second embodiment of the present application, the first fastening part is a limiting part, and the second fastening part 30 is a clamping piece matched with the limiting part and abutting against the end of the fixed shaft 14. By adopting such a structure, the connecting stability of the fixed shaft 14 and the connecting section 22 is improved through the clamping cooperation of the limiting part and the clamping piece and the abutment of the clamping piece and the end of the fixed shaft 14, and the stable operation of the wheel assembly can be ensured.

[0057] Specifically, the limiting portion and the clamping piece are positioned and fixed through shape matching, and the connection can be completed without additional tools, simplifying the assembly process, reducing production costs, and providing a stable connection. When the wheel assembly in the embodiment is applied to a grass cutting device or other equipment that needs to be quickly assembled and disassembled, the cooperation of the limiting portion and the clamping piece can significantly improve work efficiency. During use, the clamping piece is aligned with the end of the fixed shaft 14, and is pressed to cooperate with the limiting portion, thereby completing the connection of the motor 12 and the wheel shaft 20.

[0058] In the third embodiment of the present application, the second fastening portion 30 includes an abutting section 32 for abutting against the end of the fixed shaft 14; at least part of the second fastening portion 30 and one of the first fastening portions are provided with a locking opening 223; and at least part of the second fastening portion 30 and the other of the first fastening portions are used to form a locking section 31 that is adapted to the locking opening 223. With the above structure in the embodiment, the structure is simple and convenient for production and manufacturing. Through the cooperation of the second fastening portion 30 and the connecting section 22, and the abutting against the fixed shaft 14, the locking cooperation of the locking opening 223 and the locking section 31 is firm, which can effectively ensure the connection stability of the fixed shaft 14 and the connecting section 22, thereby further improving the installation stability of the motor 12.

[0059] Specifically, the locking opening 223 and the locking section 31 are matched through special-shaped openings and locking structures to achieve the locking function of the connecting piece, and the locking cooperation of the locking opening 223 and the locking section 31 provides additional mechanical locking, increasing the stability of the connection, and effectively preventing the connection from loosening, especially in high-load or vibration environments. When the wheel assembly in the embodiment is applied to a grass cutting device or other equipment that needs to operate in complex terrain, the cooperation of the locking opening 223 and the locking section 31 can ensure the stable connection of the motor 12 and the wheel shaft 20 in various working conditions. During assembly, the first fastening portion with the locking opening 223 is aligned with the second fastening portion 30 with the locking section 31, ensuring that the locking opening 223 and the locking section 31 are completely matched, and then the two are tightly combined through rotation or pressing to complete the locking.

[0060] In the embodiment, the connecting hole can be a circular hole, and at least part of the connecting section 22 is a cylindrical section that is adapted to the circular hole. Alternatively, the hole wall surface of the connecting hole includes a circular arc inner wall surface and a first rotation stopping plane, and at least part of the connecting section 22 includes a circular arc outer wall surface 2211 and a second rotation stopping plane 2212, the circular arc inner wall surface is adapted to the circular arc outer wall surface 2211, and the first rotation stopping plane is adapted to the second rotation stopping plane 2212, so as to realize the rotation stopping function of the connecting section 22 when it is connected with the connecting hole.

[0061] In this embodiment, the inner wall of the locking hole 223 is provided with a second internal thread, and the locking section 31 is provided with a second external thread matched with the second internal thread. The structure of the second internal thread and the second external thread is simple, and the locking connection is reliable, which facilitates to ensure the stable connection of the fixing shaft 14 and the connecting section 22. Alternatively, in this embodiment, the inner wall of the locking hole 223 is provided with a first clamping structure, and the locking section 31 is provided with a second clamping structure matched with the first clamping structure. The structure of the first clamping structure and the second clamping structure is simple, and the clamping connection is reliable, which facilitates to ensure the stable clamping of the fixing shaft 14 and the connecting section 22, and facilitates the stable installation of the motor 12. Of course, the locking hole 223 can be a through hole on the connecting section 22, and the locking section 31 is a bolt penetrating through the locking hole 223, and the connecting section 22 and the bolt are limited by a nut on the other side of the bolt. The locking principle of the thread or the clamping structure is to use mechanical engagement or shape matching to form a firm connection. The above two ways provide flexible and diverse locking methods, and the most suitable locking method can be selected according to different application scenarios and requirements. The wheel carrier assembly in this embodiment is mainly applied to various devices that need to connect the motor and the wheel shaft, including the grass cutting device. The locking of the thread or the clamping structure can meet the stability requirements of the connection in different environments. When assembling, according to the design, the thread connection or the clamping connection is selected, the locking hole 223 and the locking section 31 are aligned, and then the two are tightly combined by rotating or pressing to complete the locking.

[0062] The fourth embodiment of the present application provides a garden tool wheel carrier assembly. The garden tool wheel carrier assembly in this embodiment is improved on the basis of the first embodiment or the second embodiment or the third embodiment. In this embodiment, the motor 12 further includes a stator 123 and a bearing 13, and the stator 123 is fixedly arranged on the fixing shaft 14. The inner ring of the bearing 13 is connected with the fixing shaft 14, and the outer ring of the bearing 13 is connected with the rotor housing 122. By adopting such a structural arrangement, the structural layout of the motor 12 can be optimized, and the stable assembly and normal operation of the motor 12 can be facilitated.

[0063] Specifically, the configuration principle of the stator 123 and the bearing 13 in the motor 12 is to realize efficient operation of the motor 12 and reduce friction loss, so that the motor 12 runs more smoothly, with lower noise and longer service life. The motor 12 in this embodiment can be applied to work equipment such as grass cutting devices that require the motor 12 to work continuously for a long time. The reasonable configuration of the stator 123 and the bearing 13 can significantly improve the working efficiency and reliability of the motor. In the assembly process of the motor 12, the stator 123 is firmly fixed on the fixing shaft 14, and then the bearing 13 is installed, so that the inner ring of the bearing 13 is tightly matched with the fixing shaft 14, and the outer ring is connected with the rotor housing 122, forming a complete motor 12.

[0064] In the embodiment, the connecting segment 22 comprises a first segment 221 and a second segment 222 connected with each other, the outer peripheral wall of the second segment is arranged protruding from the outer peripheral wall of the first segment 221, the first segment 221 is inserted into the connecting hole, and the second segment 222 abuts against the end of the fixed shaft 14. In this way, in the installation, the first segment 221 is inserted into the connecting hole and the second segment 222 abuts against the end of the fixed shaft 14, so that the insertion position of the connecting segment 22 can be positioned by the positioning step formed at the connection between the first segment 221 and the second segment 222, and in addition, the positioning of the fixed shaft 14 is provided by the positioning step, and the abutment or connection of the second fastening part 30 and the fixed shaft 14 can better improve the connection stability and reliability of the connecting segment 22 and the fixed shaft 14, and ensure the close connection of the motor 12 and the wheel shaft 20.

[0065] Specifically, the first segment 221 and the second segment 222 can both be cylindrical segments, and the diameter of the second segment 222 is greater than the diameter of the first segment 221.

[0066] Specifically, the segmented design of the connecting segment 22 is to adapt to connecting holes of different sizes while ensuring the reliability of the connection, and in addition, the large diameter of the second segment 222 provides better abutment support and contact area, so as to ensure that the connection is more stable and can withstand greater load. The garden tool wheel assembly in the embodiment is mainly applied to devices such as grass cutting devices that require a motor to directly drive a hub structure, and the segmented connecting segment 22 can adapt to different models of hub structures 10 and motors 12, improving the universality and interchangeability of the device.

[0067] In the embodiment, the hub structure 10, the connecting segment 22 and the second fastening part 30 are both two, the wheel shaft 20 further comprises a main body segment 21, two connecting segments 22 are arranged at two ends of the main body segment 21, two hub structures 10 are arranged in one-to-one correspondence with the two connecting segments 22, and each hub structure 10 is connected with the corresponding connecting segment 22 and locked and matched with the corresponding second fastening part 30. In this way, the stable installation and connection of the two hub structures 10 can be facilitated, so as to ensure the installation stability of the overall structure of the wheel assembly.

[0068] Specifically, the two wheel hub structures 10 realize that the two motors 12 respectively drive and control the corresponding two wheel hubs 11 to realize a double wheel hub structure, and the two motors 12 are independently driven to operate, thereby realizing differential control and higher control flexibility. In this way, the left and right wheel hub structures 10 can have different rotating speeds when the mowing device is turning, so that the turning is more stable and accurate. Especially in devices such as mowers that need to work in narrow spaces or complex terrains, the double wheel hub structure can significantly improve the maneuverability and adaptability of the device. The wheel carrier assembly in the embodiment is assembled by connecting the two wheel hub structures 10 with the connecting segments 22 at both ends of the main body segment 21, and locking and fitting through the respective second fastening parts 30, to complete the assembly of the double wheel drive system of the mowing device.

[0069] Specifically, the fixed shaft 14 of each wheel hub structure 10 has oppositely arranged first and second plug-in ends, the first plug-in end is located at one end of the second plug-in end close to the main body segment 21, at least part of the connecting segment 22 is inserted into the connecting hole through the first plug-in end, and at least part of the second fastening part 30 is inserted into the connecting hole through the second plug-in end. With such a structure, during installation, the wheel hub structure 10 is first installed on the connecting segment 22, that is, the connecting segment 22 is inserted into the connecting hole through the first plug-in end, and then the second fastening part 30 is inserted into the connecting hole through the second plug-in end and is locked and connected with the first fastening part, so that the installation is convenient. Compared with the scheme that the second fastening part 30 is inserted through the first plug-in end and is connected with the first fastening part, the installation position in the present application is located on the outer side of the wheel hub structure 10, so that the installation method is more convenient and facilitates the installation operation of the worker.

[0070] As shown in Figure 3 and 4 The wheel shaft 20 also includes a main body segment 21 connected with the connecting segment 22, and the wheel carrier assembly also includes a wiring structure 40 having a wire inlet, a wire outlet, and a wiring channel communicating with the wire inlet and the wire outlet, and the wiring structure 40 is connected with the main body segment 21. Through the arrangement of the wiring structure 40, the wire 121 of the motor 12 can be guided conveniently, the wire connection of the wire 121 is facilitated, and the wire 121 is also protected to avoid damage of the wire 121 when the wheel carrier assembly operates. During assembly, the wire 121 of the motor 12 is inserted through the wiring channel of the wiring structure 40, is connected to the inside circuit of the main shell of the mowing device from the wire inlet, and is led out from the wire outlet, so as to ensure the smoothness and safety of the wire.

[0071] Specifically, the wheel shaft 20 further comprises a fixing plate 23 connected with the end of the main body section 21, the connecting section 22 is connected with the fixing plate 23 and extends away from the side of the main body section 21, and the wiring structure 40 is mounted on the fixing plate 23. With such a structure, the setting stability of the connecting section 22 and the wiring structure 40 can be improved, and the structural layout of the wiring structure 40 and the connecting section 22 can be optimized, so that the wiring structure 40 is located as close to the motor 12 as possible, thereby facilitating better wiring guidance and protection of the line 121 out of the motor 12.

[0072] Specifically, the wiring structure 40 is located on the two sides of the fixing plate 23 respectively, and the line 121 of the motor 12 is led out from the fixing shaft 14 and connected to the wiring structure 40. Since the second section 222 limits the hub structure 10, a wiring gap is reserved between the end face of the hub structure 10 and the fixing plate 23, the line 121 of the motor 12 is led out from the fixing shaft 14 and enters the wiring gap, and then is led into the wiring structure 40, thereby better optimizing the wiring layout of the line 121. Due to different designs of the hub structure 10 and the wheel shaft 20, the wiring gap can be of different sizes, and the gap is at least greater than the diameter of the line 121 of the motor 12. Preferably, in the embodiment, the size of the gap is 4mm-15mm, and the wiring gap of the assembly is 11mm, which can more compactly install the hub structure 10 on the wheel shaft 20. That is, the line 121 of the motor 12 is composed of multiple wires, and the line 121 of the motor can be fixed as a cylindrical shape, or multiple wires can be arranged side by side, which can more compactly set the wiring gap.

[0073] Specifically, the first connecting hole and the second connecting hole are arranged on the fixing plate 23 in a spaced manner, the first connecting hole is matched with the shape of the main body section 21, the main body section 21 is inserted into the first connecting hole and fixedly connected with the fixing plate 23, and the second connecting hole is matched with the shape of the connecting section 22, the connecting section 22 is inserted into the second connecting hole and fixedly connected with the fixing plate.

[0074] Specifically, the wheel shaft 20 can be an integral molding structure or a split assembly structure; the integral molding structure has stable structure and good structural strength; the split assembly structure is convenient to disassemble, maintain and replace.

[0075] In one embodiment, the main body section 21 and the connecting section 22 are located on the two sides of the fixing plate 23 respectively, and with such a structure, the structural layout can be optimized, the connecting section 22 and the fixing shaft 14 can be connected and matched, and the interference of the main body section 21 on the connecting section 22 during assembly can be avoided. Specifically, during installation, the two hub structures 10 are installed from the end of the connecting section 22 away from the main body section 21, which has more installation space and is convenient for installation, thereby improving the convenience of operation.

[0076] In another embodiment, the main section 21 and the connecting section 22 are both located on the same side of the fixing plate 23, and a certain gap will be left between the main section 21 and the connecting section 22 to facilitate the installation of the two hub structures 10. Specifically, when installed, the two hub structures 10 will be installed from the side of the connecting section 22 away from the fixing plate 23. In this structure, it is necessary to ensure that the main section 21 has a longer length.

[0077] Specifically, the main section 21 and the connecting section 22 can both be in a strip-shaped structure. The main section 21 is in a solid structure to ensure the structural strength of the axle.

[0078] In order to facilitate the optimization of the structural layout of the wheel carrier assembly, the axis of the main section 21 is arranged in parallel with or coincides with the axis of the connecting section 22.

[0079] In order to facilitate the optimization of the structural layout of the wheel carrier assembly and improve the compactness of the structural layout, at least part of the wiring structure 40 extends in a preset direction, and at least part of the wiring structure 40 is arranged in parallel with the axis of the main section 21.

[0080] In order to avoid the leakage of the line 121 in the wiring structure 40, the wiring structure 40 is made of insulating material to improve the safety and flexibility of the wiring structure 40, and to avoid the short circuit and wear of the line 121. In this way, when the mowing device is working in a complex environment, the reliability of the line 121 is guaranteed, and the arrangement of the line is more scientific and reasonable, which improves the durability of the equipment and the safety of the user. Especially in the equipment such as the mower which needs to work in the environment with moisture or metal fragments, the wiring structure 40 made of insulating material can effectively protect the line and prolong the service life of the equipment. Specifically, the wiring structure 40 can be made of a hard plastic pipe made of plastic material.

[0081] Specifically, in order to facilitate the optimization of the structural layout of the priority structure, the wiring structure 40 includes a first pipe section 41 and a second pipe section 42 connected to each other and at a preset angle, the first pipe section 41 extends in a preset direction, and the first pipe section 41 is parallel to the main section 21. With such a wiring structure 40, it is easier to guide the line 121 inside the wiring structure 40 to the electrical components on the body connected to the wheel carrier assembly, and to optimize the wiring path of the line 121.

[0082] In the embodiment, the wire arrangement structures 40 are two; the two wire arrangement structures 40 are respectively connected with the two ends of the main body section 21, the two wire arrangement structures 40 are respectively arranged corresponding to the two hub structures 10 at the two ends of the main body section 21, and the wire 121 of the motor 12 of each hub structure 10 is arranged on the corresponding wire arrangement structure 40. In this way, the wire 121 of the motor 12 on each hub 11 can be conveniently guided, thereby facilitating better protection of the wire 121 of the motor 12 on each hub 11. The above structure corresponds to the design of double wire arrangement structures, which can better adapt to the layout of the double-hub motor, ensure that the wire arrangement mode and layout of the wire 121 of each motor 12 are more reasonable, and improve the reliability and maintenance convenience of the equipment.

[0083] Specifically, the two wire arrangement structures 40 are symmetrically arranged to further optimize the structural layout and improve the compactness of the structural layout.

[0084] Specifically, each wire arrangement structure 40 includes a first pipe section 41 and a second pipe section 42 that are connected to each other and have a preset angle, the first pipe section 41 extends along a preset direction, the first pipe section 41 is parallel to the main body section 21, and the second pipe section 42 of one wire arrangement structure 40 is connected to the second pipe section 42 of the other wire arrangement structure 40. By adopting the above arrangement of the wire arrangement structure 40, the arrangement and connection stability of the two wire arrangement structures 40 can be improved, and the wire arrangement structure 40 can be prevented from shaking or being unstable during the operation of the wheel assembly, thereby preventing the wire 121 in the wire arrangement structure 40 from being damaged due to unstable installation of the wire arrangement structure 40, and preventing the motor 12 from being unable to be accurately driven and controlled due to damage of the wire 121. The angle design of the first pipe section 41 and the second pipe section 42 is to adapt to the direction of the wire 121, so that the wire 121 can be smoothly drawn out of the motor 12 and connected with the internal circuit of the main machine shell. Such an arrangement is particularly suitable for equipment such as a mowing device that requires wires to be drawn out in different directions, and the angle design of the first pipe section 41 and the second pipe section 42 can effectively integrate the wires and prevent the wires from crossing and being chaotic. Specifically, the included angle between the first pipe section 41 and the second pipe section 42 can be between 60° and 120°, and is preferably 90°.

[0085] Specifically, the second pipe section 42 forms a wire outlet at the end away from the first pipe section 41, the connection of the second pipe sections 42 of the two wire arrangement structures 40 facilitates centralized wire outlet, optimizes the wire arrangement mode and layout, and improves the compactness of the structural layout. During the operation of the wheel assembly, the wire arrangement structure 40 can remain stable even if it encounters bumps or vibrations, thereby preventing the wire from being damaged.

[0086] Specifically, each wiring structure 40 further comprises a wiring connector 43, the fixed plate 23 is provided with a third connecting hole, one end of the wiring connector 43 is matched with the shape of the third connecting hole, and the one end of the wiring connector 43 is inserted into the third connecting hole and fixedly connected with the fixed plate 23. The other end of the wiring connector 43 is connected with the first pipe segment 41, and specifically, the other end of the wiring connector 43 is inserted with the first pipe segment 41.

[0087] In order to facilitate the disassembly and assembly of each wiring structure 40, the wiring connector 43 can be provided with a locked connection state and a loosened state. When the wiring connector 43 is in the locked connection state, the wiring connector 43 is locked and connected with the second pipe segment 42; when the wiring connector 43 is in the loosened state, the wiring connector 43 is detachably separated from the first pipe segment 41, so as to facilitate the wiring inspection. Specifically, the wiring connector 43 comprises a main body part and a disconnection part, the disconnection part is movably arranged on the main body part, the main body part comprises a first circular arc segment, and the disconnection part comprises a second circular arc segment. When the wiring connector 43 is in the locked connection state, the disconnection part is overlapped on the main body part and is clamped or locked and connected with the main body part, and the first circular arc segment and the second circular arc segment are spliced to form a complete inner circular arc to be inserted and connected with the first pipe segment 41. When the wiring connector 43 is in the loosened state, the disconnection part is not clamped or locked and connected with the main body part.

[0088] In an embodiment not shown, in order to facilitate the smooth switching of the wiring connector 43 to the locked connection state and the loosened state, a first clamping part can be arranged on the main body part, and a second clamping part matched with the first clamping part can be arranged on the disconnection part. One of the first clamping part and the second clamping part is a clamping protrusion, and the other of the first clamping part and the second clamping part is a clamping groove; or one of the first clamping part and the second clamping part is a first clamping hook, and the other of the first clamping part and the second clamping part is a second clamping hook.

[0089] Specifically, in order to facilitate the locking or loosening of the wiring connector 43 and the first pipe segment 41, a first overlapping strip can be arranged on the main body part, and a second overlapping strip matched with the first overlapping strip can be arranged on the disconnection part, a first connecting through hole is arranged on the first overlapping strip, and a second connecting through hole is arranged on the second overlapping strip. The wiring structure 40 further comprises a plug-in part and a locking part in locked cooperation, the plug-in part is provided with a third external thread, and the locking part is provided with a third internal thread matched with the third external thread. When the wiring connector 43 is in the locked connection state, the first overlapping strip is overlapped with the second overlapping strip, the first connecting through hole and the second connecting through hole are oppositely arranged, the plug-in part is inserted into the first connecting through hole and the second connecting through hole, and the locking part is locked and connected with the plug-in part.

[0090] As Figure 4As shown, in one embodiment, the wheel carrier assembly further comprises a connecting piece 60, which is arranged between and connected with the second pipe sections 42 of the two wire routing structures 40, so as to improve the arrangement stability of the two wire routing structures 40, thereby ensuring the wire routing stability of the wires 121 in the two wire routing structures 40. In addition, the above structure also facilitates the optimization of the structural layout of the connecting piece, and improves the compactness of the connection layout. Especially for the mowing device and other equipment that needs to work in complex terrain, the connecting piece 60 can effectively improve the anti-interference ability of the wire routing structure 40, and protect the wires 121 from being damaged.

[0091] Specifically, the connecting piece 60 has a first connecting edge 61, which is adapted to and connected with the transition of the first pipe section 41 and the second pipe section 42 of one wire routing structure 40 and the second pipe section 42 of the wire routing structure 40. By arranging the first connecting edge 61 and connecting, better adhesion connection with one wire routing structure can be achieved, so as to better improve the connection arrangement stability of the wire routing structure.

[0092] Specifically, the connecting piece 60 has a second connecting edge 62, which is adapted to and connected with the transition of the first pipe section 41 and the second pipe section 42 of the other wire routing structure 40 and the second pipe section 42 of the wire routing structure 40. With such a structure arrangement, better adhesion connection with the other wire routing structure can be achieved, so as to better improve the connection arrangement stability of the wire routing structure.

[0093] By arranging the first connecting edge 61 and the second connecting edge 62, the connection stability and structural compactness of the connecting piece can be ensured, and the connecting piece 60 can occupy too much space, thereby facilitating the structural layout and compactness arrangement of the space at the bottom of the machine body where the wheel shaft 20 is located. The arrangement of the first connecting edge 61 and the second connecting edge 62 also realizes the precise butt joint of the connecting piece 60 and the wire routing structure 40, ensures the stability of the connection and the protection effect of the wires, and also facilitates the formation of a closed wire routing system, improves the waterproof performance of the overall wire and the reliability of the electric control system.

[0094] Specifically, the connecting piece 60 is a connecting plate, which is symmetrically arranged along a preset axis, and the two wire routing structures 40 are also symmetrically arranged relative to the preset axis, thereby better optimizing the structural layout and facilitating the symmetry of the overall structural layout.

[0095] Specifically, the connection between the first pipe section 41 and the second pipe section 42 is an arc-shaped transition, so as to facilitate the smooth transition of the wires 121 at the connection between the first pipe section 41 and the second pipe section 42, and avoid the wires 121 being easily damaged due to excessive bending.

[0096] The first pipe segment 41 and the second pipe segment 42 can each be a circular pipe, so as to facilitate production and manufacturing and wiring arrangement.

[0097] Specifically, the connecting piece 60 is a connecting plate, which has a simple structure and is easy to produce and manufacture. Specifically, the connecting plate is an arc-shaped plate, and the first connecting edge 61 and the second connecting edge 62 of the arc-shaped plate are each an arc-shaped edge, so as to facilitate better connection of the arc-shaped plate with the two wiring structures 40.

[0098] Specifically, the connecting piece 60 further includes oppositely arranged third and fourth connecting edges 63 and 64, the two ends of the third connecting edge 63 are respectively connected to one end of the first connecting edge 61 and one end of the second connecting edge 62, and the two ends of the fourth connecting edge 64 are respectively connected to the other end of the first connecting edge 61 and the other end of the second connecting edge 62. Specifically, the third connecting edge 63 is located on the side of the fourth connecting edge 64 close to the first pipe segment 41, the third connecting edge 63 is flush with the outer walls of the two first pipe segments 41, and the fourth connecting edge 64 is flush with the end portions of the two second pipe segments 42, so as to avoid occupying too much space by the connecting piece 60, improve the compactness of the structure layout, and facilitate miniaturization of the structure.

[0099] Specifically, in order to improve the connection stability of the two wiring structures 40, the two wiring structures 40 and the connecting piece 60 can be formed into an integrally formed structure through an integrally forming process.

[0100] Specifically, the connecting piece 60 can be made of an insulating material, so as to better avoid leakage of the lines 121 and facilitate better protection of the lines 121. Specifically, the connecting piece 60 can be a hard plastic plate.

[0101] In another embodiment, in order to facilitate improvement of the connection stability of the two wiring structures 40, the two wiring structures 40 can be directly connected. Specifically, the second pipe segment 42 of one wiring structure 40 can be directly connected to the second pipe segment 42 of another wiring structure 40, that is, the outer wall of the second pipe segment 42 of one wiring structure 40 is directly connected to the outer wall of the second pipe segment 42 of another wiring structure 40.

[0102] The fourth embodiment of the utility model further provides a grass cutting device, including garden tool wheel frame assembly provided by all above-embodiments. Specifically, the grass cutting device further includes a machine body, and the garden tool wheel frame assembly is installed on the machine body. The grass cutting device in the embodiment realizes efficient, stable and intelligent operation of the mower, and significantly improves the operation efficiency and safety of the grass cutting device, and the user operation is more convenient. The application scenarios of the grass cutting device in the embodiment are wide, including garden maintenance, lawn trimming, park greening and the like, especially in the working environment requiring frequent direction adjustment or coping with complex terrain.

[0103] The operation process of the grass cutting device in the embodiment includes that after starting the grass cutting device, the hub motor 12 in the wheel frame assembly directly drives the hub 11, realizes the forward movement and steering of the mower, and the wiring structure 40 and the connecting piece 60 ensure the safety and stability of the line, the whole grass cutting device runs stably, the control is flexible, the operation efficiency is high, and the user operation experience is good.

[0104] Figure 1 The connection mode of the hub motor and the wheel shaft is shown. Among them, the motor 12 is the core component of the whole technical scheme, and the motor 12 is directly connected with the hub 11 to form a hub motor. The motor 12 of the hub motor includes a fixed shaft 14 and a rotor shell 122 rotating relative to the fixed shaft 14, and the rotor shell 122 is directly connected with the hub 11. The wheel shaft 20 includes a main body segment 21 and a connecting segment 22 connected with each other, and the fixed shaft 14 is provided with a connecting hole matched with the connecting segment 22 at least partially. The connecting segment 22 is at least partially inserted into the connecting hole, and is locked through the cooperation of the first fastening part and the second fastening part 30. The first fastening part can be a first external thread arranged on the connecting segment 22, and the second fastening part 30 can be a first internal thread arranged in the connecting hole, and the matching of the two ensures the reliability of the connection. In addition, the connecting hole can be a through hole or a blind hole, and in the case of the blind hole, the end of the connecting segment 22 at least partially abuts against the blind hole end of the connecting hole. In addition, the connecting segment 22 can also facilitate the connection of the hub structure 10 and the wheel shaft 20.

[0105] Figure 2 The connection details of the motor 12 and the wheel shaft 20 are further refined, and the wiring structure 40 is introduced. Two hub structures 10 are arranged at both ends of the main body segment 21 and connected with the corresponding connecting segments 22. The wiring structure 40 has a wire inlet, a wire outlet and a wiring channel communicated with the wire inlet and the wire outlet, wherein the wiring structure 40 is made of non-conductive material to ensure electrical safety. The wiring structure 40 is connected with the main body segment 21, and the design makes the line of the motor 12 smoothly pass through the wiring structure 40 from the inside of the main machine shell to the motor end face, optimizes the electrical wiring, and improves the system integration and reliability.

[0106] Figure 2The internal design structure of the motor is provided. The motor 12 further comprises a stator 123 fixedly arranged on the fixed shaft 14, the inner ring of the bearing 13 is connected with the fixed shaft 14, and the outer ring of the bearing 13 is connected with the rotor shell 122. This arrangement ensures the smoothness and efficiency of the motor operation, and is also convenient for maintenance and replacement. The arrangement of the bearing 13 can ensure that the motor 12 can smoothly drive the hub 11 to rotate. In addition, the garden tool wheel assembly further comprises a tire 15 mounted on the hub 11.

[0107] As shown in Figure 3 and Figure 4 , the connecting section 22 comprises a first section 221 and a second section 222, wherein the diameter of the second section 222 is greater than that of the first section 221, the first section 221 is inserted into the connecting hole, and the second section 222 abuts against the end of the fixed shaft 14, which enhances the stability of the connection. The second fastening part 30 at least partially cooperates with the first fastening part to form a locking effect. Specifically, the second fastening part 30 comprises an abutting section 32 for abutting against the end of the fixed shaft 14; the second fastening part 30 is at least partially provided with a locking hole 223 on one of the first fastening parts; the second fastening part 30 is at least partially provided with a locking section 31 on the other of the first fastening parts, which is adapted to the locking hole 223. The inner wall of the locking hole 223 can be provided with a second internal thread, and the locking section 31 is provided with a second external thread matched with the second internal thread; or, the inner wall of the locking hole 223 is provided with a first clamping structure, and the locking section 31 is provided with a second clamping structure matched with the first clamping structure, which aims to improve the efficiency and reliability of the connection.

[0108] As shown in Figure 3 and Figure 4As shown, the specific structure of the wiring structure 40 is disclosed. The wheel shaft 20 further comprises a fixing plate 23 connected with the end of the main body section 21, the connecting section 22 is connected with the fixing plate 23 and extends away from the side of the main body section 21, and the wiring structure 40 is installed on the fixing plate 23, which ensures the stability and safety of the wiring. The wiring structure 40 comprises a first pipe section 41 and a second pipe section 42 connected with each other and at a preset angle, wherein the first pipe section 41 extends in a preset direction, and the first pipe section 41 is parallel to the axis of the main body section 21, and the second pipe section 42 is connected with the second pipe section 42 of another wiring structure 40 to form a closed wiring path. This design optimizes the wiring layout, reduces the complexity of electrical connection, and ensures the smoothness and safety of the wiring. The connecting piece 60 is arranged between the second pipe sections 42 of the two wiring structures 40 and connected with the two second pipe sections 42, which has a first connecting edge 61, which is adapted to and connected with the transition of the first pipe section 41 and the second pipe section 42 of one wiring structure 40 and the second pipe section 42 of the wiring structure 40. At the same time, the connecting piece 60 also has a second connecting edge 62, which is adapted to and connected with the transition of the first pipe section 41 and the second pipe section 42 of another wiring structure 40 and the second pipe section 42 of the wiring structure 40. Through the use of the connecting piece 60, the connection stability between the wiring structures 40 is enhanced, and the integration and safety of the wiring structure 40 are further optimized.

[0109] Figure 5 and Figure 6 The partial structural diagram of the wheel assembly is shown. The wheel assembly comprises a hub structure 10, a connecting section 22 and a second fastening part 30, all of which are two. The wheel shaft 20 further comprises a main body section 21, two connecting sections 22 are arranged at both ends of the main body section 21, two hub structures 10 are arranged in one-to-one correspondence with the two connecting sections 22, and each hub structure 10 is connected with the corresponding connecting section 22 and locked with the corresponding second fastening part 30. The axis of the main body section 21 is arranged in parallel with the axis of the connecting section 22, and the wiring structure 40 extends at least partially in a preset direction and in parallel with the axis of the main body section 21. This design of the wiring structure 40 helps to reduce electrical interference and improve the overall stability and safety of the system.

[0110] Specifically, the grass cutting device in the embodiment adopts a direct drive design of an independent motor 12, eliminating the risk of failure of the traditional transmission system and improving the stability and safety of the grass cutting device operation. The double-motor independent control strategy makes precise differential control possible, the turning response is more sensitive, the trajectory is smoother, and the control experience is significantly improved. The optimized design reduces the weight of the whole machine and simplifies the maintenance process. The electric control system supports stepless speed regulation and intelligent start-stop function, effectively reducing the user's operation burden. The wheel assembly adopts a high-response characteristic motor direct drive, which adapts to complex terrain and enhances the adaptability of the grass cutting device in different working conditions, widening the use scenarios.

[0111] The mowing device in the embodiment can realize high-precision differential control of the two motors 12 in complex terrain, so that the mowing device can flexibly cope with various curves and slopes, and can maintain a stable working state even on uneven ground, thereby improving mowing efficiency and safety.

[0112] The fixing shaft of the motor in the application can be directly sleeved on at least part of the connecting section, avoiding the case that the motor protrudes from the connecting section to cause the width of the wheel carrier assembly along the axial direction of the wheel shaft to be large, so that the width of the wheel carrier assembly in the extension direction of the wheel shaft is small, thereby facilitating the miniaturization assembly of the wheel carrier assembly, and further facilitating the overall miniaturization of the mowing device.

[0113] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0114] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A garden tool wheel frame assembly, characterized in that, include: A hub structure (10) includes a hub (11) and a motor (12) connected to the hub (11). The motor (12) includes a fixed shaft (14) and a rotor housing (122) that rotates relative to the fixed shaft (14). The rotor housing (122) is connected to the hub (11) to drive the hub (11) to rotate. A wheel axle (20) includes a connecting section (22); the fixed shaft (14) is provided with a connecting hole that is adapted to at least a portion of the connecting section (22), and at least a portion of the connecting section (22) is inserted into the connecting hole; The first fastening part is provided on the connecting section (22); The second fastening part (30) is connected to the fixed shaft (14) to lock the connecting section (22) and the fixed shaft (14) through the cooperation of the first fastening part and the second fastening part (30).

2. The garden tool wheel frame assembly according to claim 1, characterized in that, The first fastening part is a first external thread provided on the connecting section (22), and the second fastening part (30) is a first internal thread provided in the connecting hole. The first internal thread is adapted to the first external thread.

3. The garden tool wheel frame assembly according to claim 2, characterized in that, The connecting hole is a through hole; or... The connecting hole is a blind hole, and at least a portion of the end of the connecting segment (22) abuts against the blind hole end of the connecting hole.

4. The garden tool wheel frame assembly according to claim 1, characterized in that, The first fastening part is a limiting part, and the second fastening part (30) is a snap-fit ​​part that cooperates with the limiting part. The snap-fit ​​part abuts against the end of the fixed shaft (14).

5. The garden tool wheel frame assembly according to claim 1, characterized in that, The second fastening part (30) includes an abutment section (32) for abutting against the end of the fixed shaft (14); At least a portion of the second fastening part (30) and one of the first fastening parts are provided with a locking opening (223); at least a portion of the second fastening part (30) and the other of the first fastening parts form a locking section (31) adapted to the locking opening (223).

6. The garden tool wheel frame assembly according to claim 5, characterized in that, The inner wall of the locking opening (223) is provided with a second internal thread, and the locking section (31) is provided with a second external thread that matches the second internal thread; or, The inner wall of the locking opening (223) is provided with a first snap-fit ​​structure, and the locking section (31) is provided with a second snap-fit ​​structure that is adapted to the first snap-fit ​​structure.

7. The garden tool wheel frame assembly according to claim 1, characterized in that, The motor (12) also includes: The stator (123) is fixedly mounted on the fixed shaft (14); The bearing (13) has its inner ring connected to the fixed shaft (14) and its outer ring connected to the rotor housing (122).

8. The garden tool wheel frame assembly according to any one of claims 1 to 7, characterized in that, The connecting segment (22) includes a first segment (221) and a second segment (222) that are connected to each other. The outer peripheral wall of the second segment (222) protrudes from the outer peripheral wall of the first segment (221). The first segment (221) is inserted into the connecting hole, and the second segment (222) abuts against the end of the fixed shaft (14).

9. The garden tool wheel frame assembly according to any one of claims 1 to 7, characterized in that, There are two hub structures (10), two connecting sections (22), and two fastening parts (30). The axle (20) also includes a main body section (21). The two connecting sections (22) are respectively disposed at both ends of the main body section (21). The two hub structures (10) are disposed in a one-to-one correspondence with the two connecting sections (22). Each hub structure (10) is connected to the corresponding connecting section (22) and locked in place with the corresponding second fastening part (30).

10. The garden tool wheel frame assembly according to claim 9, characterized in that, Each of the hub structures (10) has a fixed shaft (14) with a first plug-in end and a second plug-in end disposed opposite to each other. The first plug-in end is located at the end of the second plug-in end near the main body section (21). At least a portion of the connecting section (22) is inserted into the connecting hole through the first plug-in end. At least a portion of the second fastening part (30) locks the connecting section to the fixed shaft (14) at the second plug-in end.

11. The garden tool wheel frame assembly according to any one of claims 1 to 7, characterized in that, The axle (20) also includes a main body section (21) connected to the connecting section (22); the garden tool wheel frame assembly also includes: The wiring structure (40) has an inlet, an outlet and a wiring channel that is connected to both the inlet and the outlet, and the wiring structure (40) is connected to the main body section (21).

12. The garden tool wheel frame assembly according to claim 11, characterized in that, The axle (20) also includes: A fixing plate (23) is connected to the end of the main body segment (21), the connecting segment (22) is connected to the fixing plate (23) and extends along the side away from the main body segment (21), and the wiring structure (40) is mounted on the fixing plate (23).

13. The garden tool wheel frame assembly according to claim 11, characterized in that, The axis of the main body segment (21) is parallel to the axis of the connecting segment (22); and / or, At least a portion of the wiring structure (40) extends along a predetermined direction, and at least a portion of the wiring structure (40) is arranged parallel to the axis of the main body segment (21).

14. The garden tool wheel frame assembly according to claim 11, characterized in that, The wiring structure (40) is made of insulating material; and / or, The wiring structure (40) includes a first pipe segment (41) and a second pipe segment (42) that are connected to each other and at a preset angle. The first pipe segment (41) extends along a preset direction and is parallel to the main body segment (21).

15. The garden tool wheel frame assembly according to claim 11, characterized in that, There are two wiring structures (40); the two wiring structures (40) are respectively connected to both ends of the main body section (21), and the two wiring structures (40) are respectively set to correspond one-to-one with the two hub structures (10) located at both ends of the main body section (21). The wiring (121) of the motor (12) of each hub structure (10) is installed on the corresponding wiring structure (40).

16. The garden tool wheel frame assembly according to claim 15, characterized in that, Each of the wiring structures (40) includes a first pipe segment (41) and a second pipe segment (42) that are connected to each other and at a preset angle. The first pipe segment (41) extends along a preset direction and is parallel to the main body segment (21). The second pipe segment (42) of one wiring structure (40) is connected to the second pipe segment (42) of the other wiring structure (40).

17. The garden tool wheel frame assembly according to claim 16, characterized in that, The wheel frame assembly also includes a connector (60) disposed between and connected to the second pipe segments (42) of the two wiring structures (40).

18. The garden tool wheel frame assembly according to claim 17, characterized in that, The connector (60) has a first connecting edge that is adapted to and connected to the transition between a first segment (41) and a second segment (42) of a wiring structure (40) and to the second segment (42) of the wiring structure (40); and / or, The connector (60) has a second connecting edge that is adapted to and connected to the transition between the first segment (41) and the second segment (42) of another wiring structure (40) and the second segment (42) of the wiring structure (40).

19. The garden tool wheel frame assembly according to claim 15, characterized in that, The axle (20) also includes: The fixing plate (23) is connected to the end of the main body section (21). The wiring structure (40) and the fixing shaft (14) are located on both sides of the fixing plate (23). The wiring (121) of the motor (12) is led out from the fixing shaft (14) and connected to the wiring structure (40).

20. A lawn mowing device, characterized in that, The garden tool wheel frame assembly includes any one of claims 1 to 19.

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