Grass raking attachment, grass raking machine and garden tool

Abstract

A grass raking attachment (100), comprising: a first connecting portion (10), which is configured to connect to the main body of a multi-head tool; a blade holder shaft (20); a cutting assembly (30), which is mounted on the blade holder shaft (20) and configured to rotate synchronously with the blade holder shaft (20); and a transmission device (40), which is configured to couple with the blade holder shaft (20) and drive the blade holder shaft (20) to rotate, the transmission device (40) being arranged at one end of the blade holder shaft (20).

Description

Hay raking attachments, hay rakers and garden tools

[0001] This application claims priority to Chinese Patent Application No. 202410678883.5, filed on May 29, 2024, China Patent Office; Chinese Patent Application No. 202421209773.6, filed on May 29, 2024, China Patent Office; and Chinese Patent Application No. 202410678899.6, filed on May 29, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of power tool technology, specifically to garden tools, particularly multi-head tools and hay-raking attachments and hay-raking machines. Background Technology

[0003] Garden tools, including lawnmowers and multi-head tools, typically consist of a motor, a transmission mechanism, and working components. The motor drives the working components through the transmission mechanism. However, during prolonged operation, the transmission mechanism generates heat. If this heat cannot be dissipated effectively, it can shorten the lifespan of the garden tools or even cause them to overheat and break down. Related technologies often incorporate cooling systems for garden tools, but this not only increases manufacturing costs but also leads to a larger tool size, reducing the user experience.

[0004] Multi-head garden tools are popular in the market. Typically, a multi-head tool consists of a power unit that can be equipped with various attachments, such as pruning attachments, rake attachments, and tilling attachments. However, in related technologies, rake attachments used on multi-head tools often suffer from weed leakage in the width direction when rakeing. Furthermore, these rake attachments are often limited in function and fail to meet user needs.

[0005] This section provides background information related to this application, which is not necessarily prior art. Summary of the Invention

[0006] One object of this application is to solve or at least alleviate some or all of the aforementioned problems. Therefore, one object of this application is to provide a hay rake attachment capable of solving the problem of hay leakage in the width direction.

[0007] To achieve the above objectives, this application adopts the following technical solution: a grass-raking attachment, comprising: a first connecting part configured to connect to the body of a multi-head tool; a blade holder shaft; a cutting assembly mounted on the blade holder shaft, the cutting assembly being configured to rotate synchronously with the blade holder shaft; and a transmission device configured to couple with the blade holder shaft and drive the blade holder shaft to rotate, the transmission device being disposed at one end of the blade holder shaft.

[0008] In some embodiments, the cutting assembly includes a plurality of roller blades, which are sequentially mounted on the blade holder shaft.

[0009] In some embodiments, the cutting assembly includes a plurality of torsion spring assemblies, which are sequentially sleeved on the tool holder shaft.

[0010] In some embodiments, the torsion spring assembly includes a torsion spring seat and a torsion spring, the torsion spring seat being sleeved on the tool holder shaft, and the torsion spring being detachably connected to the torsion spring seat.

[0011] In some embodiments, the transmission device employs a belt drive.

[0012] In some embodiments, the transmission device includes a first pulley, a second pulley, and a belt. The first pulley is configured to be directly or indirectly coupled to the output shaft of the motor, the second pulley is coupled to the tool holder shaft, and the belt is sleeved on the first pulley and the second pulley.

[0013] In some embodiments, the first pulley includes a first fan-blade structure, which drives airflow when the first pulley rotates; and / or

[0014] The second pulley includes a second fan blade structure. When the second pulley rotates, the second fan blade structure drives the airflow.

[0015] In some embodiments, the hay-raking attachment also includes wheels, and the multi-head tool is a push-type multi-head tool.

[0016] In some embodiments, the tool post shaft is connected to a wheel and its relative height is adjustable, so that the height of the tool post shaft relative to the ground is adjustable.

[0017] In some embodiments, the hay-raking attachment also includes a protective cover, which is a flip-over hay-draining baffle.

[0018] To achieve the above objectives, this application adopts the following technical solution: a grass-raking attachment, comprising: a first connecting part configured to connect to the body of a multi-head tool; at least one blade holder shaft; a cutting assembly comprising multiple cutting elements, the multiple cutting elements being sequentially mounted on at least one blade holder shaft, the cutting assembly being configured to rotate synchronously with at least one blade holder shaft; the maximum distance between two adjacent cutting elements is less than or equal to 4 cm.

[0019] In some embodiments, the cutting element is a roller blade, which is sleeved on the blade holder shaft.

[0020] In some embodiments, the cutting element is a torsion spring assembly, which is sleeved on the tool holder shaft.

[0021] In some embodiments, the torsion spring assembly includes a torsion spring seat and a torsion spring, the torsion spring seat being sleeved on the tool holder shaft, and the torsion spring being detachably connected to the torsion spring seat.

[0022] In some embodiments, the hay-raking attachment further includes a transmission device configured to couple with and drive the blade holder shaft to rotate, the transmission device being disposed at one end of the blade holder shaft.

[0023] In some embodiments, the transmission device includes a first pulley, a second pulley, and a belt. The first pulley is configured to be directly or intermittently coupled to the output shaft of the motor, the second pulley is coupled to the tool holder shaft, and the belt is sleeved on the first pulley and the second pulley.

[0024] In some embodiments, the first pulley includes a first fan-blade structure, which drives airflow when the first pulley rotates.

[0025] In some embodiments, the second pulley includes a second fan blade structure. When the second pulley rotates, the second fan blade structure drives the airflow.

[0026] In some embodiments, the hay-raking attachment also includes wheels, and the multi-head tool is a push-type multi-head tool.

[0027] In some embodiments, the hay-raking attachment further includes a height adjustment mechanism configured to make the height of the blade holder shaft relative to the ground adjustable.

[0028] In some embodiments, the hay-raking attachment also includes a protective cover, which is a flip-over hay-draining baffle.

[0029] To achieve the above objectives, this application adopts the following technical solution: a garden tool, comprising a grip end and a working head disposed at both ends of the garden tool. The grip end includes: a grip portion configured for a user to hold; and a power supply device configured to supply power to the garden tool. The working head includes: a blade holder shaft extending laterally, generally parallel to the ground; a cutting assembly mounted to the blade holder shaft, configured to rotate synchronously with the blade holder shaft; and a transmission device configured to couple with the blade holder shaft and drive the blade holder shaft to rotate, the transmission device being disposed at one end of the blade holder shaft.

[0030] In some embodiments, the garden tool also includes a motor disposed at the grip end and configured to drive a transmission.

[0031] In some embodiments, the gripping end and the working head are connected by a single support rod.

[0032] In some embodiments, the support rod is a tubular component, and a main drive shaft passes through the support rod, which transmits the power of the motor to the transmission device.

[0033] In some embodiments, the transmission device employs a belt drive.

[0034] In some embodiments, the transmission device includes a first pulley, a second pulley, and a belt. The first pulley is used to couple with the main drive shaft, the second pulley is used to couple with the tool holder shaft, and the belt is sleeved on the first pulley and the second pulley.

[0035] In some embodiments, garden tools also include a housing configured to cover and protect the working head.

[0036] In some embodiments, the garden tool also includes wheels attached to both ends of the housing along its width.

[0037] In some embodiments, the relative height between the tool post shaft and the wheel is adjustable, so that the height of the tool post shaft relative to the ground is adjustable.

[0038] In some embodiments, garden tools also include a protective cover that is pivotally connected to the housing.

[0039] The advantage of this application is that the grass-raking attachment of this application, by setting the transmission device for driving the cutting component at one end of the blade holder shaft, or setting the distance between multiple cutting elements on the blade holder shaft to less than or equal to 4cm, ensures that the grass-raking attachment will not have the problem of grass leakage along the axial direction of the blade holder shaft when it is working.

[0040] To achieve the above objectives, this application adopts the following technical solution: a grass rake, comprising: a working head, the working head including: a blade holder shaft extending laterally generally parallel to the ground; a cutting assembly mounted to the blade holder shaft, the cutting assembly configured to rotate synchronously with the blade holder shaft; a housing configured to cover and protect the working head; a motor configured to drive the blade holder shaft; a power supply device configured to at least supply power to the motor; and wheels connected to the housing; characterized in that the grass rake includes only two wheels, respectively connected to both ends of the housing along the width direction.

[0041] In some embodiments, the raker also includes a grip end, including a grip portion configured for a user to hold, and a motor and power supply are disposed near the grip end.

[0042] In some embodiments, the gripping end and the working head are connected by a single support rod.

[0043] In some embodiments, the support rod is a tubular component, and a main drive shaft passes through the support rod, which transmits the power of the motor to the transmission device.

[0044] In some embodiments, a transmission device is disposed at one end of the tool holder shaft and drives the tool holder shaft.

[0045] In some embodiments, the transmission device includes a first pulley, a second pulley, and a belt. The first pulley is used to couple with the main drive shaft, the second pulley is used to couple with the tool holder shaft, and the belt is sleeved on the first pulley and the second pulley.

[0046] In some embodiments, the working head is replaceable.

[0047] In some embodiments, the relative position of the tool holder shaft and the housing is fixed.

[0048] In some embodiments, the hay rake further includes a height adjustment mechanism configured to adjust the height of the blade holder shaft relative to the ground by adjusting the height of the housing relative to the wheels.

[0049] In some embodiments, the hay rake also includes a protective cover that is pivotally connected to the housing.

[0050] The advantages of this application are: the grass rake of this application, by setting two wheels at both ends of the housing, can adjust the height of the blade holder shaft relative to the ground by adjusting the height of the housing relative to the wheels; in addition, space is left to facilitate the installation of a protective cover at the rear of the housing.

[0051] Another objective of this application is to provide a hay rake attachment with interchangeable cutting elements of different functions to achieve different purposes.

[0052] To achieve the above objectives, this application adopts the following technical solution: a grass-raking attachment, comprising: a first connecting part configured to connect to the body of a multi-head tool; a blade holder shaft; a cutting assembly mounted to the blade holder shaft, at least a portion of the cutting assembly being configured to rotate synchronously with the blade holder shaft; the cutting assembly may be configured as a first cutting assembly or a second cutting assembly, at least a portion of the cutting elements of the first cutting assembly and the second cutting assembly being different.

[0053] In some embodiments, both the first cutting assembly and the second cutting assembly include a removable locking element, which allows the first or second cutting assembly to be detached from the tool holder shaft when the locking element is removed.

[0054] In some embodiments, the cutting element of the first cutting assembly is a roller blade, which is sleeved on the blade holder shaft.

[0055] In some embodiments, the cutting element of the second cutting assembly is a torsion spring assembly, which is sleeved on the tool holder shaft.

[0056] In some embodiments, the torsion spring assembly includes a torsion spring seat and a torsion spring, the torsion spring seat being sleeved on the tool holder shaft, and the torsion spring being detachably connected to the torsion spring seat.

[0057] In some embodiments, the rake attachment also includes wheels, and the multi-head tool is a push-type multi-head tool.

[0058] In some embodiments, the hay-raking attachment further includes a height adjustment mechanism configured to make the height of the blade holder shaft relative to the ground adjustable.

[0059] In some embodiments, the hay-raking attachment further includes a height adjustment mechanism, which includes: a gear position fixedly connected to the housing of the hay-raking attachment and having multiple gear positions, wherein the relative position of the housing and the blade holder shaft is fixed; a connecting rod, one end of which is connected to a wheel and the other end of which is pivotally connected to the housing; and a handle fixedly connected to the connecting rod, wherein the handle can be selected to engage with any gear position so that the connecting rod and the wheel rotate relative to the housing and the blade holder shaft and then lock.

[0060] In some embodiments, the hay-raking attachment also includes a protective cover.

[0061] In some embodiments, the protective cover is a flip-over grass-removing baffle.

[0062] The advantages of this application are: the hay-raking attachment of this application is equipped with a first cutting component and a second cutting component that can be installed on the blade holder shaft, and the cutting elements of the first cutting component and the second cutting component are different. Users can choose to switch between different cutting components to meet different hay-raking needs, thereby improving the user experience.

[0063] Another object of this application is to provide a garden tool whose transmission device can drive airflow to cool itself when in operation.

[0064] To achieve the above objectives, this application adopts the following technical solution: a garden tool, comprising: a motor and a working component driven by the motor; a transmission device configured to be directly or indirectly coupled to the output shaft of the working component and the motor respectively, driving the working component to move under the drive of the motor, the transmission device including a transmission wheel; the transmission wheel including a fan blade structure, the transmission wheel can drive airflow when rotating.

[0065] In some embodiments, each drive wheel includes an inner ring and an outer ring, with the fan blade structure evenly distributed between the inner and outer rings.

[0066] In some embodiments, the transmission device is at least partially disposed within the first cavity, and the fan blade structure can drive the airflow within the first cavity and form a first air path.

[0067] In some embodiments, the transmission device is at least partially disposed in the first cavity, and the garden tool also includes a gearbox that is directly or indirectly coupled to the output shaft of the motor and the input end of the transmission device, respectively. The gearbox is disposed in the second cavity; the fan blade structure breaks through the partition between the second cavity and the first cavity and forms a second air passage.

[0068] In some embodiments, the transmission wheel includes a first pulley and a second pulley, the first pulley being directly or indirectly coupled to the output shaft of the motor, and the transmission device also includes a belt, which is sleeved on the first pulley and the second pulley.

[0069] In some embodiments, the working components include a tool holder shaft and a cutting assembly, the tool holder shaft rotating following a second pulley driven by a belt, and at least a portion of the cutting assembly rotating with the tool holder shaft.

[0070] In some embodiments, the garden tool also includes a tensioning mechanism configured to keep the belt taut at all times.

[0071] In some embodiments, the tensioning mechanism includes: an elastic element, one end of which is fixedly mounted relative to the working component; a tensioning component, the first end of which is pivotally connected relative to the working component, the second end of which is connected to the other end of the elastic element, and the third end of which presses against the belt. The first end, the second end, and the third end are not collinear, and the elastic element is always in an elastic deformation state to tension the belt.

[0072] In some embodiments, the garden tool is a lawn rake.

[0073] In some embodiments, the garden tool is a multi-head tool, which includes a body and a working head detachably connected to the body, with a transmission mechanism disposed on the working head.

[0074] The advantages of this application are: the garden tool of this application, by forming a fan blade structure directly on the transmission wheel, enables the transmission wheel to drive airflow when it rotates. The flowing air can dissipate heat from the transmission device, preventing the transmission device from being shortened or damaged, and does not increase the number of parts in the garden tool, thus avoiding an increase in the cost and size of the garden tool and improving the user experience. Attached Figure Description

[0075] Figure 1 is a structural schematic diagram of a multi-head tool provided in a specific embodiment of this application;

[0076] Figure 2 is a structural schematic diagram of the multi-head tool in Figure 1 from another perspective;

[0077] Figure 3 is a partial structural schematic diagram of a hay rake attachment equipped with a torsion spring assembly provided in a specific embodiment of this application.

[0078] Figure 4 is a front view of the hay rake attachment in Figure 3;

[0079] Figure 5 is an isometric view of a grass-raking attachment provided in a specific embodiment of this application;

[0080] Figure 6 is a side view of the hay rake attachment in Figure 5;

[0081] Figure 7 is a structural schematic diagram of the first pulley provided in a specific embodiment of this application;

[0082] Figure 8 is a structural schematic diagram of the second pulley provided in a specific embodiment of this application;

[0083] Figure 9 is a partial structural schematic diagram of a grass-raking attachment equipped with roller blades provided in a specific embodiment of this application;

[0084] Figure 10 is a front view of the hay rake attachment in Figure 9;

[0085] Figure 11 is a structural schematic diagram of the torsion spring assembly provided in a specific embodiment of this application;

[0086] Figure 12 is a schematic diagram of the torsion spring provided in a specific embodiment of this application;

[0087] Figure 13 is an enlarged view of point A in Figure 1;

[0088] Figure 14 is a structural schematic diagram of the blade holder shaft of the grass-raking attachment provided in a specific embodiment of this application at a certain height;

[0089] Figure 15 is a schematic diagram showing the result of the rake attachment shaft at another height according to a specific embodiment of this application.

[0090] In the diagram: 100, rake attachment; 10, first joint; 11, support rod; 12, main drive shaft; 20, blade holder shaft; 30, cutting assembly; 31, drum blade; 32, torsion spring assembly; 321, torsion spring seat; 3211, mating hole; 3212, seat body; 3213, connecting part; 32131, mounting hole; 32132, slot; 32133, insertion hole; 32134, connecting groove; 322, torsion spring; 3221, free end; 3222, spring body; 3223, limiting part; 33, locking element; 331, arc-shaped clamp; 332, fastener; 40, transmission device; 41, first pulley; 411, first inner ring; 412, first... Outer ring; 413, First fan blade structure; 42, Second pulley; 421, Second inner ring; 422, Second outer ring; 423, Second fan blade structure; 43, Belt; 50, Wheel; 51, Connecting rod; 60, Housing; 61, First cavity; 62, Second cavity; 63, Protective cover; 64, Partition; 70, Height adjustment mechanism; 71, Gear position; 711, Gear position; 72, Connecting rod; 73, Handle; 731, Locking pin; 81, Gearbox; 82, Secondary drive shaft; 90, Tensioning mechanism; 91, Elastic element; 92, Tensioning assembly; 921, Connecting element; 922, Pressure wheel; 923, First end; 924, Second end; 925, Third end; 200. Main body; 201. Power supply device; 202. First gripping part; 203. Operating switch; 204. Motor; 205. Second gripping part; 206. Second connecting part. Detailed Implementation

[0091] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0092] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0093] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0094] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0095] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0096] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0097] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0098] This application provides a garden tool, which can be a lawn rake or a multi-head tool. The following embodiments use a hand-push multi-head tool as an example.

[0099] The multi-head tool includes a main body 200 and multiple different working heads. Different working heads can be selectively mounted on the main body 200, allowing the multi-head tool to perform different functions. The main body 200 is held by the user to move the working heads relative to the ground. Optionally, the working heads can be a grass-raking attachment 100, a snow-shoveling attachment, a pruning attachment, etc. In this embodiment, the grass-raking attachment 100 is used as an example for explanation.

[0100] As shown in Figures 1 and 2, the main body 200 of the multi-head tool includes a power supply 201, a first grip 202, an operation switch 203, and a motor 204. The power supply 201 supplies power to the motor 204. The power supply 201 may be a removable battery pack installed in the battery pack interface of the multi-head tool. In some embodiments, the power supply 201 provides a maximum voltage of 56V. The motor 204 is housed within the casing of the main body 200, and its maximum speed can reach 3500 r / min. The first grip 202 is for the user to hold, and the operation switch 203 is for user operation. In some embodiments, the operation switch 203 is located on or near the first grip 202, allowing the user to hold and operate with one hand. In some embodiments, the multi-head tool also includes a speed regulator, which may be located near the operation switch 203. In some embodiments, the main body 200 also includes a second grip 205. The first grip 202 and the second grip 205 can be held by the user's hands respectively, thereby ensuring the stability of the multi-head tool during operation.

[0101] In some embodiments, the grip end and the working head are respectively located at opposite ends of the multi-head tool (lawn rake / garden tool). The power supply 201, first grip 202, motor 204, and second grip 205 are all uniformly located at the grip end. Positioning the power supply 201 at the end furthest from the working head facilitates disassembly and replacement. Furthermore, when the grass rake attachment 100 operates, it exerts a force on the main body 200. The heavier power supply 201, located at the end furthest from the grass rake attachment 100, helps balance this force, preventing excessive vibration during gripping and improving the user experience. It should be noted that the grip end and the working head are connected by a rod, which supports and connects the power supply 201, first grip 202, operating switch 203, motor 204, etc.

[0102] As shown in Figures 1 and 2, the hay-raking attachment 100 includes a first connecting part 10, and the main body 200 includes a second connecting part 206. The first connecting part 10 is configured to connect with the second connecting part 206. It is understood that the connection between the hay-raking attachment 100 and the main body 200 includes, but is not limited to, mechanical structural connections, power transmission, and electrical connections. The mechanical structural connections include the connection of supporting components; the power transmission refers to the transmission connection between the output shaft of the motor 204 and the transmission structure of the hay-raking attachment 100; and the electrical connections include the electrical connections of the detection elements and lighting on the hay-raking attachment 100 to the operating switch 203 and the power supply device 201, respectively. In this embodiment, as shown in Figure 3, the first connecting part 10 includes a support rod 11 and a main drive shaft 12. The support rod 11 is a tubular component, and the main drive shaft 12 passes through the support rod 11, allowing the main drive shaft 12 to rotate relative to the support rod 11 around its own axial direction. After the first connecting part 10 and the second connecting part 206 are connected, the support rod 11 is connected to the housing structure of the main body 200, and the main drive shaft 12 is directly or indirectly connected to the output end of the motor 204. In this embodiment, one end of the main drive shaft 12 near the main body 200 extends to the outside of the support rod 11, thereby facilitating the connection with the output end of the motor 204.

[0103] In some embodiments, the main body 200 of the multi-head tool does not have a motor 204; instead, the motor 204 is mounted on the working head. This type of multi-head tool allows for the configuration of a motor 204 with corresponding performance based on the actual working requirements of the working head. In this embodiment, the connection between the first connecting part 10 and the second connecting part 206 does not involve the transmission of power.

[0104] As shown in Figures 1 and 2, the hay-raking attachment 100 also includes a support structure, a blade holder shaft 20, a cutting assembly 30, and a transmission device 40. The support structure is connected to the first connecting part 10 and is configured to support the various components of the hay-raking attachment 100. The blade holder shaft 20 is rotatably mounted on the support structure, and the cutting assembly 30 is mounted on the blade holder shaft 20, rotating synchronously with it. The transmission device 40 is also mounted on the support structure. The input end of the transmission device 40 is directly or indirectly coupled to the first connecting part 10, and the output end is coupled to the blade holder shaft 20. Under the action of the motor 204, the first connecting part 10 drives the transmission device 40 to operate, which in turn drives the blade holder shaft 20 to rotate. The blade holder shaft 20 then drives the cutting assembly 30 to rotate, thereby performing operations on the ground. In this embodiment, the blade holder shaft 20 extends laterally. Specifically, lateral extension means that when the hay-raking attachment 100 is working, the blade holder shaft 20 is approximately parallel to the ground.

[0105] In this embodiment, the hay-raking attachment 100 also includes wheels 50, which are connected to a support mechanism. When the user pushes the hay-raking attachment 100 through the main body 200, the wheels 50 reduce the resistance to the forward movement of the hay-raking attachment 100, thereby saving effort and improving the user experience. In some embodiments, the hay-raking attachment 100 may also be equipped with a drive source for the wheels 50, using the power of this drive source to replace manual driving of the wheels 50, thereby further improving the user experience. In this embodiment, the drive source can be electrically connected to the power supply device 201 of the main body 200 through the engagement of the first coupling 10 and the second coupling 206.

[0106] As shown in Figures 1 and 2, the support structure includes a housing 60, which protects the blade holder shaft 20, the transmission device 40, and at least part of the cutting assembly 30. In this embodiment, the first connecting part 10 is connected to the housing 60. The connection point between the first connecting part 10 and the housing 60 is located at the middle of the rake attachment 100 along its width, thereby making the rake attachment 100 more evenly stressed. Two wheels 50 are connected to the housing 60, each connected to one end of the housing 60 along its width. In other embodiments, three, four, or more wheels 50 may be provided; no specific limitation is made here.

[0107] In this embodiment, the housing 60 covers the upper area of ​​the cutting component 30, thereby preventing the user from being accidentally injured by the cutting component 30 or flying stones. The lowest point of the housing 60 is a certain distance from the ground. On the one hand, the housing 60 does not contact the ground, which can prevent wear and tear; on the other hand, the housing 60 can block obstacles such as large stones, preventing these obstacles from causing accidental damage to the cutting component 30.

[0108] As shown in Figures 1 and 3, the hay-raking attachment 100 also includes a protective cover 63. The protective cover 63 is located on the side of the hay-raking attachment 100 facing the user, and it prevents the cutting component 30 from causing injury to the user. In this embodiment, the protective cover 63 is a flip-over hay-discharging baffle. Specifically, the protective cover 63 is pivotally connected to the housing 60. When the hay-raking attachment 100 is working, the grass cut by the cutting component 30 moves backward and pushes the protective cover 63 to flip backward, thereby discharging the grass and preventing weeds from getting tangled on the cutting component 30 and causing it to malfunction. In some embodiments, the end of the protective cover 63 near the ground is made of a flexible material. This flexible part can buffer and block granular objects such as stones, preventing stones from flying and injuring the user, thus improving the safety of the hay-raking attachment 100. The flexible material can be a rubber pad, plastic with strong elastic deformation capability, etc.

[0109] In some embodiments, as shown in FIG3, the transmission device 40 is disposed at one end of the blade holder shaft 20. By disposing of the transmission device 40 at one end of the blade holder shaft 20, the cutting assembly 30 mounted on the blade holder shaft 20 can be prevented from being interrupted along the axial direction of the blade holder shaft 20 by the transmission device 40, thereby preventing the problem of grass leakage along the axial direction of the blade holder shaft 20 when the grass-raking attachment 100 is working, and improving the grass-raking effect of the grass-raking attachment 100.

[0110] In some embodiments, as shown in Figure 4, the cutting assembly 30 includes multiple cutting elements, which are sequentially mounted on the blade holder shaft 20. The maximum distance between two adjacent cutting elements is less than or equal to 4 cm. This arrangement also prevents grass leakage along the axial direction of the blade holder shaft 20 during operation, improving the user experience. Optionally, the distance between two adjacent cutting elements can be 0, 1 cm, 2 cm, 3 cm, 4 cm, etc., and is not specifically limited here.

[0111] As shown in Figures 3 and 4, the hay-raking attachment 100 also includes a gearbox 81 and a secondary drive shaft 82. The input end of the gearbox 81 is directly or indirectly coupled to the main drive shaft 12, and the output end of the gearbox 81 is directly or indirectly coupled to one end of the secondary drive shaft 82. The other end of the secondary drive shaft 82 is connected to the input end of the transmission device 40. In this embodiment, the secondary drive shaft 82 is approximately parallel to the blade holder shaft 20. On one hand, the gearbox 81 can reduce the rotational motion output by the motor 204, ensuring that the blade holder shaft 20 rotates at a suitable speed. On the other hand, the secondary drive shaft 82 can transmit the rotational motion to the end of the blade holder shaft 20, thus realizing the design of arranging the transmission device 40 at one end of the blade holder shaft 20. In this embodiment, the gearbox 81 is mounted on the support structure of the hay rake, and the secondary drive shaft 82 is rotatably mounted on the support structure.

[0112] As shown in Figures 4 and 5, the support structure also includes a partition 64, which is disposed inside the housing 60 and forms a first cavity 61 and a second cavity 62 for the rake attachment 100. The transmission device 40 is at least partially disposed within the first cavity 61, while the gearbox 81 and the auxiliary drive shaft 82 are disposed within the second cavity 62. By placing the transmission device 40 in a separate cavity, it is possible to prevent grass clippings or other objects generated during rakeing from being caught in the transmission device 40, thus preventing it from malfunctioning.

[0113] In this embodiment, the transmission device 40 is a belt drive. Belt drives offer good flexibility, mitigating impacts and absorbing vibrations, thereby reducing the vibrations transmitted to the main body 200 when the hay rake attachment 100 is working, and improving the user experience. As shown in Figures 5 and 6, the transmission device 40 includes a first pulley 41, a second pulley 42, and a belt 43. The first pulley 41 is directly or indirectly coupled to the output shaft of the motor 204, the second pulley 42 is coupled to the blade holder shaft 20, and the belt 43 is sleeved on the first pulley 41 and the second pulley 42. In this embodiment, both the first pulley 41 and the second pulley 42 are rotatably mounted on the partition plate 64. The first pulley 41 is connected to the auxiliary transmission shaft 82 and rotates synchronously, and the second pulley 42 is connected to the blade holder shaft 20 and rotates synchronously.

[0114] Optionally, as shown in Figures 7 and 8, both the first pulley 41 and the second pulley 42 are wedge pulleys, and the belt 43 is a wedge belt. The combination of the wedge belt and the wedge pulley can not only transmit greater power, but also result in less vibration and smoother operation. In other embodiments, the first pulley 41 and the second pulley 42 can be ordinary pulleys, and the belt 43 can be an ordinary belt 43.

[0115] After prolonged use, the belt 43 may loosen, leading to transmission failure and the cutting assembly 30 malfunctioning. To address this, as shown in Figures 5 and 6, the garden tool also includes a tensioning mechanism 90, configured to keep the belt 43 constantly taut, thereby preventing transmission failure.

[0116] In this embodiment, the tensioning mechanism 90 includes an elastic element 91 and a tensioning assembly 92. One end of the elastic element 91 is connected to the support structure, i.e., it is fixedly installed relative to the working components (tool holder shaft 20 and cutting assembly 30). The tensioning assembly 92 includes three connecting ends: a first end 923, a second end 924, and a third end 925. The first end 923, the second end 924, and the third end 925 are not collinear. The first end 923 is pivotally connected to the support structure, the second end 924 is connected to the other end of the elastic element 91, and the third end 925 presses against the belt 43. The elastic element 91 is always in an elastic deformation state to keep the belt 43 tensioned. Specifically, because the tensioning assembly 92 presses against the belt 43, the elastic element 91 maintains a certain amount of deformation. After the belt 43 loosens due to long-term use, its constraint force on the elastic element 91 decreases, and the elastic element 91 releases a certain amount of deformation (i.e., the deformation decreases), thereby causing the tensioning assembly 92 to rotate around its first end 923. During the rotation around the first end 923, the second end 924 of the tensioning assembly 92 further presses against the belt 43, thereby keeping the belt 43 taut. In this embodiment, the first end 923 of the tensioning assembly 92 is pivotally connected to the partition 64, and one end of the elastic element 91 is fixedly connected to the partition 64. The connection structure between the elastic element 91 and the partition 64 can be flexibly set as needed and is not limited here.

[0117] In some embodiments, the tensioning assembly 92 includes a connector 921 and a pressure wheel 922. The connector 921 is pivotally connected to the partition 64, and this pivotal position constitutes a first end 923 of the tensioning assembly 92. An elastic member 91 is connected to the connector 921, and this connection position constitutes a second end 924 of the tensioning assembly 92. The pressure wheel 922 is connected to the connector 921 and can rotate relative to the connector 921, and the pressure wheel 922 constitutes a third end 925 of the tensioning assembly 92. The pressure wheel 922 presses against the belt 43, thereby making the fit between the tensioning assembly 92 and the belt 43 a rolling fit, which can reduce the wear of the belt 43 and improve the service life of the transmission device 40. In this embodiment, the tensioning assembly 92 is arranged on the outside of the belt 43 to ensure that the belt 43 has a sufficiently large wrap angle with the first pulley 41 and the second pulley 42, thereby ensuring the reliability of the transmission. In other embodiments, the tensioning assembly 92 may also be arranged on the inside of the belt 43. In another embodiment, the hay-raking attachment 100 may also be provided with two, three or more tensioning mechanisms 90.

[0118] In some embodiments, the transmission device 40 may also be a gear drive or a chain drive. For a gear drive, the transmission device 40 includes a first gear directly or indirectly coupled to the output shaft of the motor 204, and a second gear directly or indirectly coupled to the tool holder shaft 20, with the first gear and second gear meshing directly or indirectly. For a chain drive, the transmission device 40 includes a first sprocket directly or indirectly coupled to the output shaft of the motor 204, a second sprocket directly or indirectly coupled to the tool holder shaft 20, and a chain that drives and engages with both the first and second sprockets. It should be noted that the first pulley, second pulley, first gear, second gear, first sprocket, and second sprocket can all be collectively referred to as transmission wheels.

[0119] When garden tools are in use for extended periods, the transmission mechanism 40 generates heat. If this heat cannot be dissipated in time, it may reduce the lifespan of the garden tools or even cause them to be damaged due to overheating. Related technologies typically equip garden tools with cooling systems, which not only increases manufacturing costs but also leads to a larger tool size, thus reducing the user experience.

[0120] As shown in Figures 5 and 6, the transmission wheel of the transmission device 40 includes a fan-blade structure, which drives airflow when rotating. When the transmission wheel rotates during operation, the airflow generated by the synchronous rotation of the fan-blade structure can dissipate heat from the transmission device 40 or other structures of the rake attachment 100. This prevents the transmission device 40 from being damaged due to overheating, and without adding extra parts, it reduces manufacturing costs and keeps the garden tool compact. Optionally, each transmission wheel includes an inner ring and an outer ring, with the fan-blade structure evenly distributed between the inner and outer rings, thus forming an axial flow fan.

[0121] In this embodiment, as shown in Figure 7, the first pulley 41 includes a first outer ring 412, a first inner ring 411, and multiple first fan-blade structures 413, which are evenly distributed between the first outer ring 412 and the first inner ring 411. The first inner ring 411 is connected to the blade holder shaft 20, and the first outer ring 412 is engaged with the belt 43. When the belt 43 drives the first pulley 41 to rotate, the first fan-blade structures 413 can drive the airflow in the first cavity 61 and form a first air path. The first air path can dissipate heat from the transmission device 40 and other structures disposed in the first cavity 61. It should be noted that the first cavity 61 is not a sealed cavity, that is, the first cavity 61 is connected to the outside of the hay-raking attachment 100, thereby ensuring that the hot air in the first cavity 61 can circulate with the normal temperature air outside the hay-raking attachment 100, and thus better dissipate heat from the structures in the first cavity 61. The first cavity 61 can be connected to the outside by providing an opening in the housing 60, or by relying solely on the gaps in the housing 60 itself.

[0122] As shown in Figure 8, the second pulley 42 includes a second outer ring 422, a second inner ring 421, and multiple second fan-blade structures 423, which are evenly distributed between the second outer ring 422 and the second inner ring 421. When the second pulley 42 rotates, the second fan-blade structures 423 drive airflow. In this embodiment, the second fan-blade structures 423 connect the first cavity 61 and the second cavity 62. When the second pulley 42 rotates, it can drive airflow between the first cavity 61 and the second cavity 62. The airflow flowing in the second cavity 62 can cool the auxiliary drive shaft 82, gearbox 81, and other structures, preventing damage to the gearbox 81 and auxiliary drive shaft 82 due to overheating. The partition 64 is provided with an opening opposite to the second fan-blade structures 423, thereby connecting the first cavity 61 and the second cavity 62. Optionally, the second cavity 62 can also be configured to communicate with the outside of the hay-raking attachment 100, thereby facilitating the circulation of hot air in the first cavity 61 and the second cavity 62 with the outside ambient air and improving the cooling effect.

[0123] In related technologies, the hay-raking attachment 100 installed on multi-head tools has a single function when hay-raking, which is difficult to meet user needs. Therefore, in this embodiment, the cutting component 30 of the hay-raking attachment 100 can be configured as a first cutting component or a second cutting component, with different cutting elements in the first and second cutting components. Users can choose to switch between different cutting components 30, allowing the hay-raking attachment 100 to meet different hay-raking needs and improving the user experience.

[0124] In some embodiments, as shown in Figures 9 and 10, the cutting element of the first cutting assembly is a roller blade 31, which is sleeved on the blade holder shaft 20. The roller blade 31 can be used to loosen soil. In this embodiment, the rake attachment 100 includes a plurality of roller blades 31, which are arranged sequentially along the axial direction of the blade holder shaft 20.

[0125] In this embodiment, the portion of the tool holder shaft 20 configured for the roller blade 31 to be fitted is defined as the fitting portion. The cross-section of the fitting portion is non-circular, and the shape and size of the hole in the roller blade 31 for fitting the tool holder shaft 20 are the same as those of the fitting portion. This non-circular fit achieves circumferential positioning between the tool holder shaft 20 and the roller blade 31, thereby ensuring that the roller blade 31 can rotate synchronously with the tool holder shaft 20. Optionally, the cross-section of the tool holder shaft 20 in the fitting portion can be hexagonal. In other embodiments, the cross-section of the tool holder shaft 20 in the fitting portion can also be quadrilateral, octagonal, etc., and is not specifically limited here.

[0126] As shown in Figure 10, the support structure also includes a detachable locking member 33. When the locking member 33 is removed, the first cutting assembly can be detached from the blade holder shaft 20. In this embodiment, the roller blade 31 located at one end of the blade holder shaft 20 can be axially limited by an annular boss or other structure located on the blade holder shaft 20, and the roller blade 31 located at the other end of the blade holder shaft 20 is axially limited by the locking member 33. When the locking member 33 is removed, all the roller blades 31 can be detached from the end of the blade holder shaft 20 where the locking member 33 is located. In this embodiment, the locking member 33 includes an arc-shaped clamp 331 and a fastener 332. The support structure (such as the housing 60) of the rake attachment 100 is provided with an arc-shaped groove. The arc-shaped groove and the arc-shaped clamp 331 form a cylindrical mating position. The end of the blade holder shaft 20 is located in the cylindrical mating position and can rotate within the cylindrical mating position, thereby achieving support for the end of the blade holder shaft 20 and axial limitation for the roller blades 31. Optionally, the fastener 332 can be a bolt, which is simple in structure and easy to assemble and disassemble. In some embodiments, both the arc-shaped clamp 331 and the arc-shaped groove are semi-circular arcs. In some embodiments, one of the arc-shaped clamp 331 and the arc-shaped groove is a major arc and the other is a minor arc, and the sum of the corresponding central angles is not greater than 180°. In some embodiments, a bearing is also sleeved on the tool holder shaft 20. The bearing is clamped in the cylindrical mating position formed by the arc-shaped clamp 331 and the arc-shaped groove, and the bearing can ensure the smooth rotation of the tool holder shaft 20.

[0127] In some embodiments, as shown in Figures 3 and 4, the cutting element of the second cutting assembly is a torsion spring assembly 32, which is sleeved on the blade holder shaft 20 and is used for raking grass. In this embodiment, the raking attachment 100 includes multiple torsion spring assemblies 32, which are arranged sequentially along the axial direction of the blade holder shaft 20.

[0128] In this embodiment, the portion of the tool holder shaft 20 for the torsion spring assembly 32 to be fitted is defined as the fitting portion. The cross-section of the fitting portion is non-circular, as shown in Figure 11. The shape and size of the mating hole 3211 of the torsion spring assembly 32 for fitting the tool holder shaft 20 are the same as those of the fitting portion. The non-circular mating method achieves circumferential positioning between the tool holder shaft 20 and the torsion spring assembly 32, thereby ensuring that the torsion spring assembly 32 can rotate synchronously with the tool holder shaft 20. Optionally, both the cross-section of the fitting portion and the shape of the mating hole 3211 of the tool holder shaft 20 are hexagonal. In other embodiments, the shape of the cross-section of the tool holder shaft 20 in the fitting portion, i.e., the mating hole 3211, can also be set to quadrilateral, octagonal, etc., without specific limitation here.

[0129] As shown in Figure 4, in this embodiment, the torsion spring assembly 32 located at one end of the tool holder shaft 20 can be axially limited by an annular boss or other structure located on the tool holder shaft 20, and the torsion spring assembly 32 located at the other end of the tool holder shaft 20 is axially limited by a locking member 33. When the locking member 33 is removed, all the torsion spring assemblies 32 can be detached from the end of the tool holder shaft 20 where the locking member 33 is located. It should be noted that different cutting assemblies may only have some different cutting elements. For example, the third cutting assembly is composed of a roller blade 31 and a torsion spring assembly 32, forming a mixed combination. In addition, different cutting elements may also lead to different numbers of cutting elements required by the cutting assembly, different spacing between cutting elements, or different installation methods of cutting elements.

[0130] As shown in Figures 11 and 12, the torsion spring assembly 32 includes a torsion spring seat 321 and a torsion spring 322. The torsion spring seat 321 is sleeved on the blade holder shaft 20, and the torsion spring 322 is detachably connected to the torsion spring seat 321. Therefore, when an individual torsion spring 322 is damaged, it is not necessary to disassemble the entire torsion spring assembly 32; only the corresponding torsion spring 322 needs to be replaced, which improves the convenience of replacing parts in the hay rake attachment 100.

[0131] In this embodiment, the torsion spring seat 321 includes a seat body 3212 and a connecting portion 3213. The seat body 3212 is provided with a mating hole 3211 for fitting onto the tool holder shaft 20. The connecting portion 3213 is disposed on the circumferential surface of the seat body 3212, and the torsion spring 322 is detachably mounted on the connecting portion 3213. In this embodiment, the torsion spring seat 321 includes two connecting portions 3213. In other embodiments, the number of connecting portions 3213 may be one, three, or more, and each connecting portion 3213 is connected to a torsion spring 322.

[0132] As shown in Figure 12, the torsion spring 322 includes a spring body 3222 and two free ends 3221. The two free ends 3221 are used for raking grass. A limiting part 3223 is provided radially outward on the spring body 3222. As shown in Figure 11, a mounting hole 32131 is provided on the end face of the connecting part 3213, which is configured for the spring body 3222 to be inserted. A slot 32132 is provided on the wall of the mounting hole 32131. The slot 32132 is arranged radially along the mounting hole 32131 and extends axially along the mounting hole 32131 to the end face of the connecting part 3213. The slot 32132 is configured for the limiting part 3223 to be inserted. A plurality of insertion holes 32133 are provided on the wall of the mounting hole 32131, which are configured for the free ends 3221 to pass through. The number of insertion holes 32133 is the same as the number of free ends 3221. The mounting hole 32131 is also provided with a connecting groove 32134. The connecting groove 32134 starts from the end face of the connecting part 3213 and extends along the axial direction of the mounting hole 32131. The connecting groove 32134 connects to a number of insertion holes 32133.

[0133] When installing the torsion spring 322, press the free end 3221 and the limiting part 3223 to bring them closer (or further apart) along the circumference of the spring body 3222. At this time, the spring body 3222 is aligned with the mounting hole 32131, the limiting part 3223 is aligned with the slot 32132, and the free end 3221 is aligned with the connecting groove 32134. Then, insert the entire torsion spring 322 into the mounting hole 32131 along the axial direction of the mounting hole 32131. When the free end 3221 is aligned with the corresponding insertion hole 32133, stop pressing the free end 3221 and the limiting part 3223. They will return to their original position under the elasticity of the spring body 3222, and the free end 3221 will snap into the corresponding insertion hole 32133. The torsion spring 322 is then securely installed on the connecting part 3213. The process of disassembling the torsion spring 322 is the reverse of the above process and will not be described in detail here.

[0134] In some embodiments, the working components of the rake attachment 100 are height-adjustable relative to the ground, thereby enabling the rake attachment 100 to perform its operations more effectively. In this embodiment, the height of the blade holder shaft 20 and the cutting component 30 on the blade holder shaft 20 relative to the ground is adjustable. The rake attachment 100 further includes a height adjustment mechanism 70, which allows the height of the blade holder shaft 20 relative to the ground to be adjusted. Specifically, the relative position of the blade holder shaft 20 and the housing 60 is fixed, the wheel 50 remains in contact with the ground, and the height adjustment mechanism 70 is directly or indirectly connected to the wheel 50 and the housing 60, respectively. The height adjustment mechanism 70 adjusts the height of the blade holder shaft 20 relative to the ground by adjusting the height of the housing 60 relative to the wheel 50.

[0135] To facilitate the demonstration of the details of the height adjustment mechanism 70, the housing 60 is concealed in Figures 14 and 15. As shown in Figures 13-15, the height adjustment mechanism 70 includes a gear shift 71, a connecting rod 72, and a handle 73. The gear shift 71 is fixedly connected to the housing 60 of the hay rake attachment 100, and has multiple gear positions 711. The first end of the connecting rod 72 is connected to the wheel 50, and the second end of the connecting rod 72 is pivotally connected to the housing 60 (the pivot point is point B in Figure 14), meaning that the connecting rod 72 can rotate relative to the housing 60 around point B. The handle 73 is fixedly connected to the connecting rod 72 and is used for user operation. The user can operate the handle 73 and select any gear position 711 to rotate the connecting rod 72 and the wheel 50 relative to the housing 60 and the blade holder shaft 20, and then lock them in place. Since the height of wheel 50 relative to the ground remains constant, when housing 60 and tool holder shaft 20 rotate relative to handle 73, connecting rod 72 and wheel 50, the height of tool holder shaft 20 and housing 60 relative to the ground changes, thereby achieving height adjustment of the working component relative to the ground.

[0136] In this embodiment, as shown in Figures 14 and 15, the gear position 711 can be a limiting hole (or limiting groove), and multiple gear positions 711 are arranged in an arc shape along a vertical plane. A locking pin 731 is provided on the handle 73. When the user rotates the handle 73 relative to its second end, the locking pin 731 can engage with different limiting holes (or limiting grooves), thereby locking the position of the gear position component 71 and the handle 73, that is, locking the position of the housing 60 and the wheel 50. In some embodiments, the gear position component 71 and the locking pin 731 can be made of a material with a certain deformation capacity, such as plastic, so that the locking pin 731 can smoothly engage or disengage with the gear position 711. In some embodiments, the locking pin 731 can also be connected to the handle 73 through an elastic component. When the user operates the handle 73, the locking pin 731 overcomes the force of the elastic component and disengages from the limiting hole under the action of external force. When the user stops operating the handle 73, the locking pin 731 remains in the position of being engaged in the limiting groove under the action of the elastic component, thereby locking the positions of the housing 60 and the wheel 50. In other embodiments, the gear position 711 can also be provided with a protruding structure. In this case, the handle 73 is provided with a limiting hole. When the limiting hole engages with different protruding structures, the height of the tool holder shaft 20 can be adjusted.

[0137] In this embodiment, as shown in Figures 1, 3, and 13, the connecting rod 72 extends approximately radially along the wheel 50, and its first end is connected to the center of the wheel 50. The first end of the connecting rod 72 is sleeved with the axis of rotation of the wheel 50, and does not rotate with the wheel 50 when the wheel 50 rotates. The hay-raking attachment 100 also includes a connecting rod 51, which extends approximately horizontally, passes through the housing 60, and can rotate relative to the housing 60 about its axis. The second end of the connecting rod 72 is fixed to the connecting rod 51, thereby achieving a pivot connection with the housing 60. The handle 73 is set at an angle to the connecting rod 72, so that the mating positions of the gear shift 71 and the handle 73 are offset from the centers of the blade holder shaft 20 and the wheel 50, respectively, avoiding positional interference.

[0138] In this embodiment, as shown in FIG3, the hay rake attachment 100 is provided with the above-mentioned height adjustment mechanism 70 at one end along the width direction, and only the connecting rod 72 is provided at the other end. The connecting rod 72 and the connecting rod 72 of the height adjustment mechanism 70 are respectively connected to the two ends of the connecting rod 51. When the user operates the handle 73 of the height adjustment mechanism 70, the height of the two ends of the housing 60 along the width direction changes synchronously relative to the two wheels 50, thereby adjusting the height of the housing 60 and the blade holder shaft 20 along the width direction synchronously.

[0139] In some embodiments, height adjustment components may be provided at both wheels 50. In this embodiment, the connecting rods 72 of the two height adjustment components are pivotally connected to the housing 60. In this embodiment, the height of the housing 60 and the tool holder shaft 20 relative to the ground is adjusted at both ends along the width direction.

[0140] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this application.

Claims

1. A hay-raking attachment, comprising: The first joint (10) is configured to be joined to the body (200) of the multi-head tool; Tool holder shaft (20); A cutting assembly (30) is mounted on the tool holder shaft (20), the cutting assembly (30) being configured to rotate synchronously with the tool holder shaft (20); and A transmission device (40) is configured to couple with the tool post shaft (20) and drive the tool post shaft (20) to rotate. The transmission device (40) is located at one end of the tool post shaft (20).

2. The hay-raking attachment according to claim 1, wherein, The cutting assembly (30) includes a plurality of roller blades (31), which are sequentially mounted on the blade holder shaft (20).

3. The hay-raking attachment according to claim 1, wherein, The cutting assembly (30) includes a plurality of torsion spring assemblies (32), which are sequentially sleeved on the tool holder shaft (20).

4. The hay-raking attachment according to claim 3, wherein, The torsion spring assembly (32) includes a torsion spring seat (321) and a torsion spring (322). The torsion spring seat (321) is sleeved on the tool holder shaft (20), and the torsion spring (322) is detachably connected to the torsion spring seat (321).

5. The hay-raking attachment according to claim 1, wherein, The transmission device (40) adopts belt drive.

6. The hay-raking attachment according to claim 1, wherein, The transmission device (40) includes a first pulley (41), a second pulley (42) and a belt (43). The first pulley (41) is configured to be directly or indirectly coupled to the output shaft of the motor (204). The second pulley (42) is coupled to the tool holder shaft (20). The belt (43) is sleeved on the first pulley (41) and the second pulley (42).

7. The hay-raking attachment according to claim 6, wherein, The first pulley (41) includes a first fan blade structure (413), which drives airflow when the first pulley (41) rotates; and / or The second pulley (42) includes a second fan blade structure (423), which drives airflow when the second pulley (42) rotates.

8. The hay-raking attachment according to claim 1 further includes wheels (50), and the multi-head tool is a hand-push multi-head tool.

9. The hay-raking attachment according to claim 8, wherein, The tool holder shaft (20) is connected to the wheel (50) and its relative height is adjustable, so that the height of the tool holder shaft (20) relative to the ground is adjustable.

10. The hay-raking attachment according to claim 1 further includes a protective cover (63), wherein the protective cover (63) is a flip-over hay-raking baffle.

11. A hay-raking attachment, comprising: The first joint (10) is configured to be joined to the body (200) of the multi-head tool; At least one tool holder shaft (20); A cutting assembly (30) includes a plurality of cutting elements, the plurality of cutting elements being sequentially mounted on at least one of the tool holder shafts (20), the cutting assembly (30) being configured to rotate synchronously with at least one of the tool holder shafts (20); The maximum distance between two adjacent cutting elements is less than or equal to 4 cm.

12. The hay-raking attachment according to claim 11, wherein, The cutting element is a roller blade (31), which is sleeved on the blade holder shaft (20).

13. The hay-raking attachment according to claim 11, wherein, The cutting element is a torsion spring assembly (32), which is sleeved on the tool holder shaft (20).

14. The hay-raking attachment according to claim 13, wherein, The torsion spring assembly (32) includes a torsion spring seat (321) and a torsion spring (322). The torsion spring seat (321) is sleeved on the tool holder shaft (20), and the torsion spring (322) is detachably connected to the torsion spring seat (321).

15. The hay-raking attachment according to claim 11 further includes a transmission device (40), the transmission device (40) being configured to couple with the blade holder shaft (20) and drive the blade holder shaft (20) to rotate, the transmission device (40) being disposed at one end of the blade holder shaft (20).

16. The hay-raking attachment according to claim 15, wherein, The transmission device (40) includes a first pulley (41), a second pulley (42) and a belt (43). The first pulley (41) is configured to be directly or intermittently coupled to the output shaft of the motor (204). The second pulley (42) is coupled to the tool holder shaft (20). The belt (43) is sleeved on the first pulley (41) and the second pulley (42).

17. The hay-raking attachment according to claim 16, wherein, The first pulley (41) includes a first fan blade structure (413), which drives airflow when the first pulley (41) rotates; and / or The second pulley (42) includes a second fan blade structure (423). When the second pulley (42) rotates, the second fan blade structure (423) drives the airflow.

18. The hay-raking attachment according to claim 11 further includes wheels (50), and the multi-head tool is a hand-push multi-head tool.

19. The hay-raking attachment according to claim 18 further includes a height adjustment mechanism (70) configured to make the height of the cutter shaft (20) relative to the ground adjustable.

20. The hay-raking attachment according to claim 11 further includes a protective cover (63), wherein the protective cover (63) is a flip-over hay-draining baffle.

21. A garden tool, comprising a grip end and a working head disposed at both ends of the garden tool, wherein, The gripping end includes: The grip (202) is configured for a user to hold; and A power supply device (201) is configured to supply power to the garden tools; The working head includes: The tool holder axis (20) extends laterally, roughly parallel to the ground. A cutting assembly (30) is mounted to the tool holder shaft (20), the cutting assembly (30) being configured to rotate synchronously with the tool holder shaft (20); and A transmission device (40) is configured to couple with the tool post shaft (20) and drive the tool post shaft (20) to rotate. The transmission device (40) is located at one end of the tool post shaft (20).

22. The garden tool of claim 21 further includes a motor (204) disposed on the grip end and configured to drive the transmission device (40).

23. The garden tool according to claim 22, wherein, The gripping end and the working head are connected by a single support rod (11).

24. The garden tool according to claim 23, wherein, The support rod (11) is a tubular component, and a main drive shaft (12) is installed inside the support rod. The main drive shaft (12) transmits the power of the motor (204) to the transmission device (40).

25. The garden tool according to claim 24, wherein, The transmission device (40) adopts belt drive.

26. The garden tool according to claim 25, wherein, The transmission device (40) includes a first pulley (41), a second pulley (42) and a belt (43). The first pulley (41) is used to couple with the main drive shaft (12), the second pulley (42) is coupled with the tool holder shaft (20), and the belt (43) is sleeved on the first pulley (41) and the second pulley (42).

27. The garden tool of claim 21, further comprising a housing (60) configured to cover and protect the working head.

28. The garden tool according to claim 27 further includes wheels (50) connected to both ends of the housing (60) in the width direction.

29. The garden tool according to claim 28, wherein, The relative height between the tool holder shaft (20) and the wheel (50) is adjustable, so that the height of the tool holder shaft (20) relative to the ground is adjustable.

30. The garden tool of claim 27 further includes a protective cover (63) pivotally connected to the housing (60).

31. A hay-raking attachment, comprising: The first joint (10) is configured to be joined to the body (200) of the multi-head tool; Tool holder shaft (20); A cutting assembly (30) is mounted to the tool holder shaft (20), and the cutting assembly (30) is configured to rotate synchronously with the tool holder shaft (20); The cutting component (30) can be configured as a first cutting component or a second cutting component, wherein at least some of the cutting elements of the first cutting component and the second cutting component are different.

32. The hay-raking attachment according to claim 31 further includes a detachable locking member (33), which, when removed, allows the first cutting assembly or the second cutting assembly to be detached from the blade holder shaft (20).

33. The hay-raking attachment according to claim 31, wherein, The cutting element of the first cutting assembly is a roller blade (31), which is sleeved on the blade holder shaft (20).

34. The hay-raking attachment according to claim 31, wherein, The cutting element of the second cutting assembly is a torsion spring assembly (32), which is sleeved on the tool holder shaft (20).

35. The hay-raking attachment according to claim 34, wherein, The torsion spring assembly (32) includes a torsion spring seat (321) and a torsion spring (322). The torsion spring seat (321) is sleeved on the tool holder shaft (20), and the torsion spring (322) is detachably connected to the torsion spring seat (321).

36. The hay-raking attachment according to claim 31 further includes wheels (50), and the multi-head tool is a hand-push multi-head tool.

37. The hay-raking attachment according to claim 36 further includes a height adjustment mechanism (70) configured to make the height of the blade holder shaft (20) relative to the ground adjustable.

38. The hay-raking attachment according to claim 37 further includes a height adjustment mechanism (70), said height adjustment mechanism (70) comprising: The gear shift component (71) is fixedly connected to the housing (60) of the grass rake attachment and is provided with multiple gear shifts (711). The relative position of the housing (60) and the blade holder shaft (20) is fixed. The connecting rod (72) is connected at one end to the wheel (50) and at the other end to the housing (60); The handle (73) is fixedly connected to the connecting rod (72). The handle (73) can be selected to engage with any of the gear positions (711) so that the connecting rod (72) and the wheel (50) rotate relative to the housing (60) and the tool holder shaft (20) and then lock.

39. The hay-raking attachment according to claim 31 further includes a protective cover (63).

40. The hay-raking attachment according to claim 39, wherein, The protective cover (63) is a flip-over grass-removing baffle.

41. A garden tool, comprising: The motor (204) and the working components driven by the motor (204); The transmission device (40) is configured to be directly or indirectly coupled to the output shaft of the working component and the motor (204) respectively, and drives the working component to move under the drive of the motor (204). The transmission device (40) includes a transmission wheel. The transmission wheel includes a fan blade structure, and the transmission wheel can drive airflow when it rotates.

42. The garden tool according to claim 41, wherein, Each of the drive wheels includes an inner ring and an outer ring, and the fan blade structure is evenly distributed between the inner ring and the outer ring.

43. The garden tool according to claim 41, wherein, The transmission device (40) is at least partially disposed in the first cavity (61), and the fan blade structure can drive the air flow in the first cavity (61) and form a first air path.

44. The garden tool according to claim 41, wherein, The transmission device (40) is at least partially disposed in the first cavity (61). The garden tool also includes a gearbox (81), which is directly or indirectly coupled to the output shaft of the motor (204) and the input end of the transmission device (40), respectively. The gearbox (81) is disposed in the second cavity (62). The fan blade structure breaks through the partition between the second cavity (62) and the first cavity (61) and forms a second air passage.

45. The garden tool according to claim 41, wherein, The transmission wheel includes a first pulley (41) and a second pulley (42). The first pulley (41) is directly or indirectly coupled to the output shaft of the motor (204). The transmission device (40) also includes a belt (43), which is sleeved on the first pulley (41) and the second pulley (42).

46. ​​The garden tool according to claim 45, wherein, The working components include a tool holder shaft (20) and a cutting assembly (30). The tool holder shaft (20) rotates following the second pulley (42) driven by the belt (43), and the cutting assembly (30) rotates with the tool holder shaft (20).

47. The garden tool of claim 45 further includes a tensioning mechanism (90) configured to keep the belt (43) taut at all times.

48. The garden tool according to claim 47, wherein, The tensioning mechanism (90) includes: The elastic element (91) is fixedly installed at one end relative to the working component; The tensioning assembly (92) has a first end (923) pivotally connected to the working assembly, a second end (924) connected to the other end of the elastic element (91), and a third end (925) pressing against the belt (43). The first end (923), the second end (924), and the third end (925) are not collinear. The elastic element (91) is always in an elastic deformation state so as to tension the belt (43).

49. The garden tool according to claim 41, wherein, The garden tool mentioned is a lawn rake.

50. The garden tool according to claim 41, wherein, The garden tool is a multi-head tool, which includes a body (200) and a working head detachably connected to the body (200), and the transmission device (40) is disposed on the working head.

51. A hay rake, comprising: The working head includes: The tool holder axis (20) extends laterally, roughly parallel to the ground; and A cutting assembly (30) is mounted to the tool holder shaft (20), the cutting assembly (30) being configured to rotate synchronously with the tool holder shaft (20); A housing (60) is configured to cover and protect the working head; A motor (204) is configured to drive the tool post shaft (20); A power supply device (201) is configured to supply power to the motor (204); and Wheels (50) are connected to the housing (60); The feature is that the grass rake includes only two wheels (50), which are respectively connected to the two ends of the housing (60) along the width direction.

52. The hay rake according to claim 51 further includes a grip end, including a grip portion (202) configured for a user to grip, and the motor (204) and the power supply device (201) are disposed close to the grip end.

53. The hay rake according to claim 52, wherein, The gripping end and the working head are connected by a single support rod (11).

54. The hay rake according to claim 53, wherein, The support rod (11) is a tubular component, and a main drive shaft (12) is installed inside the support rod. The main drive shaft (12) transmits the power of the motor (204) to the transmission device (40).

55. The hay rake according to claim 54, wherein, The transmission device (40) is located at one end of the tool holder shaft (20) and drives the tool holder shaft (20).

56. The hay rake according to claim 55, wherein, The transmission device (40) includes a first pulley (41), a second pulley (42) and a belt (43). The first pulley (41) is used to couple with the main drive shaft (12), the second pulley (42) is coupled with the tool holder shaft (20), and the belt (43) is sleeved on the first pulley (41) and the second pulley (42).

57. The hay rake according to claim 51, wherein, The working head is replaceable.

58. The hay rake according to claim 51, wherein, The relative position of the tool holder shaft (20) and the housing (60) is fixed.

59. The grass rake according to claim 58 further includes a height adjustment mechanism (70) configured to adjust the height of the blade holder shaft (20) relative to the ground by adjusting the height of the housing (60) relative to the wheel (50).

60. The hay rake according to claim 51 further includes a protective cover (63) pivotally connected to the housing (60).

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