Garden tool

Abstract

The gardening tool comprises a working element, a motor, a battery pack, a controller and a cooling path which are arranged on a shell, the motor is used for driving the working element to operate, the battery pack is used for providing electric energy needed by working for the motor, and the controller is used for controlling the motor. The cooling path guides cooling airflow to pass through the battery pack, the controller and the motor when the gardening tool is in a working state.

Description

Technical Field

[0001] This application relates to a gardening tool. Background Art

[0002] During the use of gardening tools, as heat-generating components such as controllers, motors, and battery packs continuously operate, the temperature of the tools will rise sharply. If not cooled and dissipated in time, it will cause great damage to the gardening tools, affect the service life of the battery pack and the gardening tools, and also pose a safety hazard to the users.

[0003] In the prior art, although there are cooling solutions for controllers, motors, and battery packs, these cooling solutions cannot cool the above three components simultaneously. This also means that for the cooling solutions for controllers, motors, and battery packs, there are at least two separate cooling paths. Therefore, it will lead to a relatively complex structural design of the gardening tools. Summary of the Invention

[0004] In view of this, the present invention provides a gardening tool that can at least partially solve the above problems.

[0005] To achieve the above object, the present invention provides the following technical solutions.

[0006] A gardening tool, comprising:

[0007] A housing;

[0008] A working element, a motor, a battery pack, and a controller disposed in the housing, the motor being used to drive the working element to operate to perform a work task, the battery pack being used to provide electrical energy required for the operation of the motor, and the controller being used to control the motor;

[0009] A cooling path configured to guide a cooling air flow through the battery pack, the controller, and the motor when the gardening tool is in a working state.

[0010] Preferably, the cooling path includes a cooling guiding section for guiding the cooling air flow from a cold air inlet located outside the housing to the housing, and the battery pack, the controller, and the motor are all disposed on the cooling guiding section. Wherein, the cold air inlet is provided on at least one side wall of the battery pack that is not adjacent to the housing, and a ventilation opening is provided on the side wall of the battery pack adjacent to the housing, and the ventilation opening communicates with the housing.

[0011] Preferably, the cooling guide section includes a first guide section located outside the housing and a second guide section located inside the housing. The first guide section is communicated with the second guide section through a hot air inlet provided on the housing, and the hot air inlet is communicated with the ventilation port. Wherein, the battery pack is located in the first guide section, and the controller and the motor are located in the second guide section.

[0012] Preferably, when the gardening tool is in a working state, the first guide section is configured to form a spatial path through which the cooling air flows into the interior of the battery pack through the cold air inlet and discharges from the ventilation port.

[0013] Preferably, the housing is provided with a placement cavity for detachably mounting the filter at a position corresponding to the hot air inlet. The placement cavity forms a disassembly opening on the wall of one side of the housing for disassembling the filter, and the disassembly opening is located in the battery accommodation cavity. Wherein, the battery accommodation cavity is a bracket hollow structure, and the size of the hollow structure corresponding to the disassembly opening is configured to allow the filter to pass through.

[0014] Preferably, when the battery pack is in a state of being received in the battery accommodation cavity, the disassembly opening is not blocked by the battery pack.

[0015] Preferably, the filter includes a filter element for filtering the cooling air flow and a frame for carrying the filter element; the frame has an inner end that can be inserted into the placement cavity and an outer end corresponding to the disassembly opening. Wherein, the outer end is provided with a limiting portion for limiting the depth of insertion of the filter into the placement cavity, and the limiting portion extends in a first direction substantially perpendicular to the insertion direction of the filter.

[0016] Preferably, the outer end is provided with an operating portion for operating to insert or remove the filter from the placement cavity, and the operating portion extends in a second direction substantially perpendicular to the insertion direction of the filter, and the second direction is opposite to the first direction.

[0017] Preferably, the output shaft of the motor is provided with a fan blade for driving the cooling air flow to flow along the cooling path, and a wind guide cover for receiving the motor and the fan blade is provided inside the housing, and the wind guide cover is provided with an air inlet and an air outlet. Wherein, the controller is provided inside the housing and is located on one side of the air inlet of the wind guide cover.

[0018] Preferably, when the gardening tool is in a working state, the second guide section is configured to form a spatial path through which the cooling air flow entering the housing through the hot air inlet passes through the controller and then enters the wind guide cover through the air inlet.

[0019] Preferably, the air guide cover is recessed inward on the side facing the controller to form a guide groove, and the controller is provided with finned fins on the side facing the air guide cover; the heat dissipation fins extend into the guide groove, and the air inlet of the air guide cover is provided at a position corresponding to the guide groove.

[0020] Preferably, the controller and the air inlet are located on the side of the air guide cover facing away from the hot air inlet.

[0021] Preferably, the housing is provided with a housing air outlet communicating with the air outlet of the air guide cover. The cooling path further includes a cooling outlet section, which is configured to form a spatial path when the gardening tool is in a working state, and the cooling air flows from the air outlet of the air guide cover to the housing air outlet.

[0022] In the embodiment of the present invention, the cooling air flow is guided by the cooling path to pass through the battery pack, the controller and the motor during the flow process, so that the controller, the motor and the battery pack can be cooled by a unified cooling path, thereby reducing the structural complexity. Description of the Drawings

[0023] Figure 1 is a perspective view of the gardening tool according to the embodiment of the present invention;

[0024] Figure 2 is Figure 1 the bottom perspective view of

[0025] Figure 3 is Figure 1 and Figure 2 the partial enlarged view of

[0026] Figure 4 is Figure 1 and Figure 2 the perspective view of the kettle lid in

[0027] Figure 5 is Figure 4 the plan view of

[0028] Figure 6 is Figure 4 the perspective view of the kettle body in

[0029] Figure 7 is Figure 1 and Figure 2 the partial enlarged view of

[0030] Figure 8 is Figure 7 the schematic diagram after removing the battery pack in

[0031] Figure 9 is Figure 7 the three-dimensional sectional view of

[0032] Figure 10 is Figure 9 an enlarged view of the structure within the dashed-line frame in

[0033] Figure 11 is Figure 9 a three-dimensional view of the latch in

[0034] Figure 12 is Figure 11 a plan view of

[0035] Figure 13 is Figure 9 a three-dimensional view after removing the housing;

[0036] Figure 14 is Figure 13 a three-dimensional view after removing the fan blades;

[0037] Figure 15 is Figure 13 or Figure 14 a three-dimensional view of the filter in Detailed implementation manners

[0038] In this embodiment, the terms "near" and "far" used herein are relative to the user operating the gardening tool 100. The term "near" refers to the direction relatively close to the user, and the term "far" refers to the direction relatively far from the user. For example, the battery pack 4 is at the proximal end, and the working element 2 is at the distal end.

[0039] It should be noted that the directional terms such as "near" and "far" are defined for the convenience of description. When the gardening tool 100 is used in many other directions and positions, these terms expressing relative position relationships are not restrictive and absolute. For example, the above definitions of each direction are only for the convenience of explaining this embodiment, and do not limit the direction of the gardening tool 100 in this embodiment in other scenarios that may cause it to be inverted or its position to change, including but not limited to product testing, transportation, and manufacturing. In this embodiment, if there are other clear regulations and limitations for the above definitions, they shall follow the above clear regulations and limitations.

[0040] As Figures 1 to 3 shown, the gardening tool 100 of this embodiment includes a housing 1, a motor 8 provided in the housing 1 (as Figure 14 shown), a working element 2 provided on the housing 1 and driven by the motor 8 to perform a work task, an oil pot 3 provided on the housing 1 for containing grease for lubricating the working element 2, a battery pack 4 detachably provided on the housing 1 for providing electrical energy required for the operation of the motor 8, and a controller 6 provided in the housing 1 for controlling the operation of the motor 8 (as Figure 3 , Figure 7 , Figure 13 and Figure 14 shown).

[0041] The gardening tool 100 of this embodiment can be of any type that is handheld and needs to be powered by a battery pack for mobile operation, such as a chainsaw, a trimmer, a hedge trimmer, etc. The working element 2 varies according to the type of the gardening tool 100. For example, when the gardening tool 100 is a chainsaw, the working element 2 is a cutting element. When the gardening tool 100 is a trimmer, the working element 2 is a trimming element. When the gardening tool 100 is a hedge trimmer, the working element 2 is a shearing blade.

[0042] Therefore, the solution of this embodiment can be applied to any one of the above-listed gardening tools 100, and this embodiment does not make a unique limitation thereto. This text mainly takes a chainsaw as the main description scenario, but based on the above description, the protection scope of the embodiments of the present invention is not limited thereby.

[0043] As Figures 3 to 6 shown, the oil pot 3 includes a pot body 301 and a pot lid 302 detachably connected to the pot body 301. The pot lid 302 includes a lid main body 3021 and a handle member 3022 having a storage state and an erected state. The handle member 3022 is rotatably connected to the open end of the lid main body 3021. When in the storage state, the handle member 3022 covers the open end of the lid main body 3021, which can avoid interfering with the operation. When in the erected state, the handle member 3022 can be operated by the user to drive the pot lid 302 to rotate, realizing the disassembly and assembly with the pot body 301.

[0044] In this embodiment, one of the lid main body 3021 and the handle member 3022 is provided with a limiting protrusion 303, and the other of the two is provided with a first limiting groove 304 and a second limiting groove 305 that cooperate with the limiting protrusion 303. As Figure 4 and Figure 5 shown by the solid-line structure in, when the handle member 3022 is in the storage state, the limiting protrusion 303 is embedded in the first limiting groove 304. As Figure 4 and Figure 5 shown by the dashed-line structure in, when the handle member 3022 is in the erected state, the limiting protrusion 303 is embedded in the second limiting groove 305.

[0045] By respectively providing the limiting protrusion 303 and the limiting grooves 304, 305 on the lid main body 3021 and the handle member 3022, when the handle member 3022 is in the storage state or the erected state, the limiting protrusion 303 is engaged and fitted with the corresponding limiting grooves 304, 305. Thus, the handle member 3022 can better maintain the current state and will not easily rotate without external force.

[0046] As Figure 6As shown, in one embodiment, the first limiting groove 304 and the second limiting groove 305 are provided at the open end of the lid body 3021, specifically, at the end surface of the open end of the lid body 3021. Accordingly, the limiting protrusion 303 is provided on the handle member 3022. In some possible embodiments, the limiting groove is provided inside the lid body 3021. In this case, debris and other foreign matter or impurities can easily enter the lid body 3021 when the handle member 3022 is in an upright position, that is, when the lid 302 is opened, and may further enter the limiting groove. This can cause the handle member 3022 to rotate poorly and may prevent the limiting protrusion 303 from being engaged with the limiting groove, thereby reducing the limiting or fixing strength of the handle member 3022.

[0047] In contrast, this embodiment provides a retaining groove at the open end of the cover body 3021, that is, retaining grooves 304 and 305 are provided on the outer surface of the cover body 3021. This prevents debris or foreign matter from being retained in the retaining groove for an extended period of time. Furthermore, since retaining grooves 304 and 305 are exposed, even if debris or foreign matter falls into them, they can be easily cleaned. Consequently, retaining grooves 304 and 305 can effectively cooperate with retaining protrusion 303 to achieve stable retention and fixation of handle member 3022.

[0048] Further, combined with Figure 3 As shown, the housing 1 is provided with a baffle 307, located on the side of the oil pot 3 near the working element 2. The baffle 307 is arranged approximately perpendicular to the housing 1 and is generally arc-shaped to accommodate the cylindrical structure of the oil pot 3, thereby providing a barrier and protection for the oil pot 3. The baffle 307 prevents the oil pot lid from being accidentally touched by other objects during operation of the garden tool 100 and causing it to become loose. It also prevents flying debris generated by the garden tool 100 from striking and adhering to the outer surface of the oil pot 3. This is beneficial for preventing debris or foreign matter from being trapped in the retaining grooves 304 and 305 as described above.

[0049] like Figure 6 As shown, the open end of the cover body 3021 is stepped, comprising a first surface 3023 with lower potential energy, a second surface 3024 with higher potential energy, and a stepped surface 3025 formed between the first and second surfaces 3023 and 3024 to connect the two surfaces. A first retaining groove 304 is formed on the stepped surface 3025, and a second retaining groove 305 is formed on the second surface 3024. When in the stowed position, the handle member 3022 is in contact with the first surface 3023, with the angle between the handle member 3022 and the first surface 3023 being approximately 0°. This effectively covers the open end of the cover body 3021. When in the upright position, the angle between the handle member 3022 and the first surface 3023 is approximately 90°, making it easier for the user to operate and rotate the handle member 3022.

[0050] Furthermore, if Figure 4 and Figure 5 As shown, to facilitate user operation, the handle member 3022 includes a knob 3026 for user manipulation. When the handle member 3022 is in the stowed position, the knob 3026 is positioned away from the second surface 3024 and extends slightly outward beyond the outer edge of the open end of the lid body 3021. This provides a space for the user to grasp the knob 3026, making it easier for the user to apply force to tilt the handle member 3022 upward and rotate it to the upright position. In the upright position, the user can rotate the handle member 3022 using the knob 3026 to remove the lid body 302 from the kettle body 301 or tighten it onto the kettle body 301.

[0051] like Figure 6 As shown, the first surface 3023 and the second surface 3024 are both roughly semicircular in shape, connected at the ends of the arc by two roughly vertical stepped surfaces 3025. Thus, when viewed from above, the lid body 302 appears to be a substantially complete circle. The first retaining groove 304 is located at the bottom of the stepped surface 3025, proximate to the first surface 3023, with one inner side surface flush with the first surface 3023. The second retaining groove 305 is positioned on the second surface 3024 near the stepped surface 3025, i.e., the second retaining groove 305 is located on the second surface 3024 near the end of the arc. Thus, both retaining grooves 304, 305 are located near the pivot point O of the handle member 3022. Accordingly, the retaining protrusion 303 can switch between the two retaining grooves 304, 305 with only a slight rotation, making it easier to switch the handle member 3022 between the two positions.

[0052] Furthermore, the step surface 3025 is an arc surface, which smoothly transitions between the first limiting groove 304 and the second limiting groove 305. This reduces the resistance of the limiting protrusion 303 in switching between the two limiting grooves 304 and 305, reduces the resistance of the operating handle member 3022, and makes it open or close more smoothly.

[0053] There are two first limiting grooves 304 and two second limiting grooves 305. The two first limiting grooves 304 are respectively provided on the two stepped surfaces 3025, and the two second limiting grooves 305 are respectively provided on the second surface 3024 near the arc end. Accordingly, there are also two limiting protrusions 303, which are generally symmetrically arranged on either side of the handle member 3022. This creates or configures two sets of symmetrical limiting structures on the handle member 3022, making the limiting effect of the handle member 3022 more stable and reliable.

[0054] The lid 302 is provided with a sealing ring 306, and the open end of the body 301 is provided with a curved, inclined surface 3011. When the lid 3021 is fastened to the body 301, the sealing ring 306 is compressed between the body 301 and the curved, inclined surface 3011. Thus, as the lid 302 is tightened onto the body 301, the sealing ring 306 is compressed and deformed, fitting tightly between the body 301 and the curved, inclined surface 3011. The curved, inclined surface 3011 increases the compression area between the sealing ring 306, thereby increasing the sealing engagement area between the lid 302 and the body 301, ensuring a good seal.

[0055] like Figures 3 to 6 As shown, the kettle body 301 is internally threaded, and the lid body 3021 is formed with external threads that securely mate with the internal threads of the kettle body 301. The distal end of the external threads forms a stopper 3027. When the user secures the lid 302 to the kettle body 301, the stopper 3027 of the external threads abuts against the end 3012 of the internal threads, completing the locking operation. This effectively prevents thread stripping after repeated opening and tightening of the lid 302 and also prevents excessive compression of the sealing ring 306 when tightened too tightly, thereby preventing accelerated aging of the sealing ring 306.

[0056] like Figure 8 As shown, the shell 1 is provided with a battery accommodating cavity 101 for accommodating the battery pack 4. The battery accommodating cavity 101 adopts a bracket hollow structure design, which can reduce the weight of the whole machine. The battery accommodating cavity 101 is formed with a retaining portion 102 for guiding the sliding of the battery pack 4 near the inner wall of the shell 1. The retaining portion 102 is provided with a connecting terminal 103 for electrically connecting with the battery pack 4. The battery accommodating cavity 101 is open at the upper end. The battery pack 4 can be inserted into the battery accommodating cavity 101 through the upper end opening along the assembly direction F under the guidance of the guide portion 02, or removed from the battery accommodating cavity 101 in a direction away from the assembly direction F. Among them, the assembly direction F is as follows Figures 7 to 9 Specifically, the battery pack 4 slides downward along the retaining portion 102 until the lower end abuts against the bottom of the battery accommodating cavity 101 , completing the installation of the battery pack 4 and simultaneously achieving connection with the connecting terminal 103 .

[0057] like Figure 9 As shown, the housing 1 is further provided with a movable latch 5 and a through hole 104 connected to the battery receiving cavity 101. Figure 11 and Figure 12 As shown, the latch 5 is close to the end of the battery receiving cavity 101 (as shown in FIG. Figures 8 to 12The right end shown in the figure forms a mating and locking end 501 for detachably cooperating with the battery pack 4. That is, the latch 5 moves relative to the housing 1 and has a locking position and an unlocking position. The locking end 501 can enter the battery accommodation cavity 101 through the through hole 104 or retract into the housing 1. When the latch 5 is in the locking position, the locking end 501 extends into the battery accommodation cavity 101 and cooperates with the battery pack 4, so that the battery pack is locked in the battery accommodation cavity 101, and at this time the battery pack 4 is in a locked state. When the latch 5 is in the unlocking position, the locking end 501 retracts into the housing 1 and thus disengages from the battery pack 4, and the battery pack can be removed from the battery accommodation cavity 101. At this time, the battery pack 4 is in an unlocked state.

[0058] As Figure 9 shown, the outer wall of the battery pack 4 (specifically, the outer wall close to or facing the holding part 102) is provided with a locking block 401 for cooperating with the locking end 501. When the latch 5 is in the locking position, the locking end 501 extends into the battery accommodation cavity 101 and locks with the locking block 401, and the battery pack 4 is locked in the battery accommodation cavity 101. When the latch 5 is in the unlocking position, the locking end 501 disengages from the locking block 401, and the battery pack 4 is unlocked and can be taken out from the open end of the battery accommodation cavity 101.

[0059] By arranging a movable latch 5 in the housing 1 of the gardening tool 100, through the movement of the latch 5, the locking end 501 for cooperating with the battery pack 4 (locking block 401) is moved into the battery accommodation cavity 101 or retracted into the housing 1, so that the locking or disengagement with the battery pack 4 (locking block 401) can be quickly realized, and further the locking or unlocking of the battery pack 4 in the battery accommodation cavity 101 can be realized. Thus, it can be seen that the detachable connection and fixing solution for the battery pack 4 and the housing 1 of the gardening tool 100 in this embodiment has a relatively simple structure. In practice, the user only needs to perform corresponding operations on the latch 5 to unlock the battery pack 4, and the operation is relatively convenient.

[0060] As Figure 1 、 Figure 2 、 Figure 7 and Figure 9 shown, the housing 1 is formed with a handle 105 for the user to hold. The battery accommodation cavity 101 is located at the proximal end of the handle 105, and the latch 5 is arranged at the proximal end of the handle 105. In this embodiment, the handle 105 is entirely located at the proximal end of the gardening tool 100, or is closer to the proximal end relative to the working element 2. The battery accommodation cavity 101 is also closer to the proximal end relative to the handle 105. The latch 5 is arranged at the proximal end of the handle 105 and the distal end of the battery accommodation cavity 101, that is, the latch 5 is entirely arranged on the handle 105 and is located at the distal end of the battery accommodation cavity 101 of the handle 105.

[0061] By providing the battery accommodation cavity 101 for installing the battery pack 4 at the proximal end of the handle 105 and arranging the latch 5 near the proximal end on the handle 105, it means that the latch 5 is relatively close to the battery accommodation cavity 101, or the distance between the latch 5 and its acting or cooperating object (the battery pack 4) is relatively short. In this way, the volume of the latch 5 and the moving range or distance for locking or unlocking the battery pack 4 will be correspondingly reduced, thereby effectively reducing the volume of the whole machine and improving the space utilization rate. Moreover, the position design of the latch 5 on the handle 105 and its relatively short distance from the battery pack 4 enable the user to conveniently operate the latch 5 even when holding the handle 105, making the unlocking operation of the battery pack 4 relatively simple.

[0062] In addition, the layout of the latch 5 at a position near the proximal end on the handle 105 and the relatively small size or volume design of the latch 5 described above ensure that most of the part of the handle 105 for being held by the user is not affected by the installation of the latch 5. Thus, when the user holds and operates the handle 105, they will not be interfered by the latch 5, resulting in a better user experience.

[0063] Furthermore, the handle 105 extends generally along the direction defined by the battery accommodation cavity 101 to the working element 2, that is, the handle 105 extends in the direction from near to far. An accommodation groove 106 extending generally in the same direction is formed in the handle 105. The latch 5 is limited in the accommodation groove 106 and can slide in the accommodation groove 106. In this embodiment, the housing 1 (the handle 105) is formed by splicing left and right half structures, and correspondingly, the accommodation groove 106 is formed by the mutual abutting and cooperation of the half structures on both sides of the housing 1. By arranging the accommodation groove 106 for receiving or limiting the latch 5 in the handle 105 in a generally same-direction manner, it is equivalent to using the natural or existing structure of the handle 105 to provide a setting and moving space for the latch 5. This not only meets the free movement amount required for the latch 5 to lock or unlock the battery pack 4, but also maximally makes full use of the functional characteristics of the known structure, thereby avoiding structural modifications and maximizing the simplification of the structural complexity.

[0064] As Figure 9 shown, an elastic reset member 107 is provided between the housing 1 and the latch 5 for applying an elastic force to the latch 5. This elastic force causes the locking end 501 to have a tendency to extend into the battery accommodation cavity 101 or maintain the state of extending into the battery accommodation cavity 101, that is, to keep the latch 5 in the locked position or make the latch 5 have a tendency to move towards the locked position. The elastic reset member 107 can be a linear helical spring, and its two ends are biased between the housing 1 and the latch 5. Specifically, one end abuts against the bottom wall of the accommodation groove 106, and the other end abuts against the inner end of the latch 5 (defined as the end facing away from the locking end 501, or as Figure 11the left end shown). In this way, the elastic reset member 107 always exerts an outward force on the latch 5 (defined as, for example, Figures 7 to 9 to the right as shown, or the direction pointing towards the proximal end, or the direction pointing towards the battery receiving cavity 101), so as to ensure that in the absence of external force, the locking end 501 of the latch 5 can always remain in a state of protruding into the battery receiving cavity 101, that is, the battery pack 4 can always be in the desired locked state, avoiding any movement of the latch 5 and the resulting unexpected unlocking of the battery pack 4.

[0065] Such as Figure 11 shown, the end of the latch 5 facing away from the locking end 501 (the inner end mentioned above) is recessed inward to form a groove 502. One end of the elastic reset member 107 is arranged in the groove 502, and the other end abuts against the inner wall of the housing 1. In this way, the groove 502 can play a role in straightening the compression or elongation movement of the elastic reset member 107, ensuring that the elastic reset member 107 can maintain the abutting or configured state with the latch 5 for a long time. At the same time, the above-mentioned straightening effect can also prevent the elastic reset member 107 from rubbing against the inner wall of the placement groove 106 when it is bent unexpectedly, avoiding the jamming of the movement of the latch 5.

[0066] Furthermore, the latch 5 is provided with an outwardly protruding stop 504. The stop 504 is located in the placement groove 106 and inside the through hole 104, and is used to limit the outward movement of the latch 5, preventing the latch 5 from moving outward under the action of the elastic reset member 107 and disengaging from the placement groove 106.

[0067] The latch 5 is provided with an unlocking operating member 503. The outer end of the unlocking operating member 503 protrudes to the outside of the handle 105 and is used to be operated to drive the latch 5 to move in a direction away from the battery receiving cavity 101, that is, to the unlocking position. Such as Figure 7 shown, the handle 105 is provided with a substantially elongated opening 108 for the outer end of the unlocking operating member 503 to protrude. The elongated shape provides a moving stroke for the unlocking operating member 503. Therefore, in this embodiment, the locking of the battery pack 4 by the latch 5 can be achieved by the elastic reset member 107. And the unlocking of the battery pack 4 by the latch 5 can be achieved by the unlocking operating member 503.

[0068] Preferably, the number of the unlocking operating members 503 is two, and they are arranged symmetrically on both sides of the movable direction of the latch 5, specifically, they can be the left and right sides. In this way, the user can operate the two unlocking operating members 503 simultaneously with one hand, and the experience in terms of force balance and operation convenience is better. Of course, the unlocking operating member 503 can also be one, and is arranged on the left / right / upper side of the handle 105, and this embodiment does not limit this.

[0069] Furthermore, such as Figure 7 and Figure 9As shown, when the battery pack 4 is in the locked state, one end of the battery pack 4 (such as Figure 7 and Figure 9 the upper end shown) is exposed to the outside of the opening end of the battery receiving cavity 101. This structural design can be achieved by configuring the depth of the hollow-shaped battery receiving cavity 101. Through this design, after unlocking, the user can operate the exposed end portion of the battery pack 4 by pinching, holding, pressing, etc. to take it out of the battery receiving cavity 101, without setting a mechanism (generally, the function of this popping mechanism is to make the upper end of the battery pack 4 exposed for the user to take out the battery pack 4) at the bottom of the battery receiving cavity 101 for popping up the battery pack 4 after it is unlocked. Thus, while facilitating the operation of taking out the battery pack 4, the structure is simplified.

[0070] As Figures 8 to 12 shown, the locking end 501 has a first locking surface 5011, and the locking block 401 has a second locking surface 4011 for cooperating with the first locking surface 5011 (as Figure 10 shown). Both the first locking surface 5011 and the second locking surface 4011 are flat surfaces. Among them, the normal direction of the first locking surface 5011 is substantially the same as the assembly direction F, or the first locking surface 5011 faces the assembly direction F. The normal direction of the second locking surface 4011 is substantially opposite to the second direction, or the second locking surface 4011 faces away from the assembly direction F. When the battery pack 4 is inserted into the battery receiving cavity 101 and the locking end 501 is in a locked state with the locking block 401, the first locking surface 5011 is located upstream of the second locking surface 4011 along the assembly direction F. In this way, the first locking surface 5011 can play a role in stopping the second locking surface 4011, preventing the battery pack 4 with the locking block 401 from moving in the direction away from the assembly direction F (that is, the upward direction as Figure 9 shown), so that the battery pack 4 is stably limited and fixed in the battery receiving cavity 101.

[0071] Furthermore, the locking end 501 also has an inclined first guiding surface 5012, and the locking block 401 also has an inclined second guiding surface 4012 (as Figure 10 shown). The first guiding surface 5012 is located upstream of the first locking surface 5011 along the assembly direction F, and the second guiding surface 4012 is located downstream of the second locking surface 4011 along the assembly direction F. Specifically, as Figure 12 shown, the first locking surface 5011 is provided on (or is) the lower surface of the locking end 501, the first guiding surface 5012 is formed on the lower surface of the locking end 501, or is formed by inclining downward from the upper surface of the locking end 501. Similarly, the second locking surface 4011 is provided on (or is) the upper surface of the locking block 401, the second guiding surface 4012 is formed on the lower surface of the locking block 401, or is formed by inclining upward from the lower surface of the locking block 401.

[0072] When the battery pack 4 is inserted into the battery receiving cavity 101 along the assembly direction F, the first guiding surface 5012 contacts the second guiding surface 4012, applying a force to the latch 5. This force causes the locking end 501 to retract into the housing 1. Thus, with the cooperation of the two inclined guiding surfaces 4012 and 5012, it is beneficial to reduce the resistance when the battery pack 4 is inserted downward into the battery receiving cavity 101, making it easier to install the battery pack 4.

[0073] Therefore, the installation and disassembly process of the battery pack 4 is generally as follows:

[0074] During the process of inserting the battery pack 4 into the battery receiving cavity 101 along the assembly direction F (downward), the second guiding surface 4012 on the locking block 401 abuts against the first guiding surface 5012 on the locking end 501, thereby pushing the latch 5 to move into the housing 1. At this time, the elastic resetting member 107 is in a compressed state. After the battery pack 4 is completely installed in the battery receiving cavity 101, the elastic resetting member 107 is released, pushing the latch 5 to move towards the battery receiving cavity 101. At this time, the second locking surface 4011 of the locking block 401 abuts against the first locking surface 5011 on the locking end 501, and the battery pack 4 cannot be removed from the battery receiving cavity 101. At this time, the battery pack 4 and the battery receiving cavity 101 are in a locked state where there is no relative movement between the two.

[0075] When the user slides the unlocking operating member 503 forward, the locking end 501 of the latch 5 retracts into the housing 1, and the first locking surface 5011 on the locking end 501 loses the limiting and blocking effect on the second guiding surface 4012 of the locking block 401. At this time, the battery pack 4 can be removed from the battery receiving cavity 101, and the two are in an unlocked state where relative movement can occur.

[0076] In this embodiment, the gardening tool 100 further includes a cooling path that guides cooling air flow through the battery pack 4, the controller 6, and the motor 8 when the gardening tool 100 is in a working state. Compared with the prior art that can only cool any two of the battery pack 4, the controller 6, and the motor 8, in the embodiment of the present invention, the cooling air flow is guided through the battery pack 4, the controller 6, and the motor 8 during the flow process through the cooling path. Thus, the controller 6, the motor 8, and the battery pack 4 can be cooled by a unified cooling path, thereby reducing the structural complexity.

[0077] Such as Figure 1 、 Figure 7 、 Figure 9 、 Figure 13 and Figure 14As shown, the cooling path includes a cooling guide section for guiding the cooling airflow into the housing 1 via a cold air inlet 402 located on the outside of the housing 1. The battery pack 4, controller 6, and motor 8 are all located on the cooling guide section. This also means that when the cooling airflow flows, it will pass through the battery pack 4, controller 6, and motor 8, thereby cooling the battery pack 4, controller 6, and motor 8 (air cooling). In this embodiment, the cold air inlet 402 is located on at least one side wall of the battery pack 4 that is not adjacent to the housing 1. The side wall of the battery pack 4 adjacent to the housing 1 is provided with a vent (not shown), which is connected to the housing 1.

[0078] Specifically, the battery pack 4 includes a cell assembly and a battery pack housing for housing the cell assembly. The battery pack housing is roughly cubic and has four side walls along the assembly direction F. These four side walls are divided into two categories according to whether they are adjacent to the housing 1. One category is the side wall adjacent to the housing 1, which can be referred to as the inner side wall. Figure 1 、 Figure 7 、 Figure 9 、 Figure 13 and Figure 14 The other type is the side wall that is not adjacent to the shell 1, which can be simply referred to as the outer side wall, that is, Figure 1 、 Figure 7 、 Figure 9 、 Figure 13 and Figure 14 In this embodiment, to increase the amount of air intake, cold air inlets 402 may be provided on the three outer walls of the battery pack 4, and multiple cold air inlets 402 may be provided on each outer wall without affecting the strength of the outer wall.

[0079] Practice has shown that there are special benefits by arranging the cold air inlet 402 of the entire cooling path on the outside of the shell 1 and on the battery pack 4. Specifically, since the battery pack 4 is arranged at the proximal end of the shell 1, or is arranged facing away from the working element 2. In this way, during the operation of the garden tool 100, the cold air inlet 402 is kept away from the debris splashed by the operation of the working element 2 to the greatest extent possible, thereby avoiding the cold air inlet 402 being blocked by debris and ensuring smooth air intake at the cold air inlet 402. Moreover, the cold air inlet 402 is arranged using the battery pack 4, a component that is located on the outside of the shell 1 as a whole, to simplify the structural design. In addition, the battery pack 4 is a component that generates a large amount of heat and needs to be cooled. If the cold air inlet 402 is arranged on it, the cold air entering through the cold air inlet 402 can immediately cool the battery pack 4, and the cooling effect of the battery pack 4 is better.

[0080] The cooling guiding section includes a first guiding section located outside the housing 1 and a second guiding section located inside the housing 1. Among them, the first guiding section guides the cooling air flow to cool the components located outside the housing 1, that is, the battery pack 4. Therefore, when the battery pack 4 is located in the first guiding section, the first guiding section is the spatial path formed when the cooling air flow enters the interior of the battery pack 4 through the cold air inlet 402 and exits through the ventilation opening when the gardening tool 100 is in the working state. This spatial path enables the cooling air flow to flow successively through the cold air inlet 402, the internal space of the battery pack 4, and the ventilation opening, thereby realizing the cooling of the battery pack 4 (mainly the battery cell assembly).

[0081] Combined Figure 8 As shown, the first guiding section is connected to the second guiding section through the hot air inlet 109 provided on the housing 1, and the hot air inlet 109 is connected to the ventilation opening. Specifically, the hot air inlet 109 is provided on the rear end wall of the housing 1 and corresponds to the ventilation opening when the battery pack 4 is in the locked state, realizing their connection.

[0082] Similarly, the second guiding section guides the cooling air flow to cool the components located inside the housing 1, that is, the controller 6 and the motor 8. Therefore, when the controller 6 and the motor 8 are located in the second guiding section, the second guiding section is the spatial path formed when the cooling air flow entering the housing 1 through the hot air inlet 109 passes through the controller 6 and then enters the air guiding cover 9 through the air inlet when the gardening tool 100 is in the working state. This spatial path enables the cooling air flow to flow successively through the hot air inlet 109 and the internal space of the housing 1, thereby realizing the cooling of the controller 6 and the motor 8.

[0083] As Figure 7 、 Figure 8 、 Figures 13 to 15 As shown, the housing 1 is provided with a placement cavity (not shown) for detachably installing the filter 7 at the position corresponding to the hot air inlet 109. The filter 7 is used to filter the cooling air flow entering the housing 1, including dust, wood chips, etc., to prevent the above impurities from entering the interior of the housing 1 and affecting the service life of the machine. The placement cavity forms a disassembly opening 110 on the wall on one side of the housing 1 for detaching the filter 7, and the disassembly opening 110 is located in the battery accommodation cavity 101. Moreover, the size of the hollow structure of the battery accommodation cavity 101 corresponding to the disassembly opening 110 is configured to allow the filter 7 to pass through. In this way, the installation and disassembly (for cleaning) of the filter 7 can be facilitated. Further, when the battery pack 4 is in the state of being received in the battery accommodation cavity 101, the disassembly opening 110 is not blocked by the battery pack 4. Thus, even when the battery pack 4 is not disassembled, the installation and disassembly of the filter 7 can still be realized.

[0084] As Figure 15As shown, the filter 7 includes a filter element 701 for filtering the cooling air flow and a frame 702 for carrying the filter element 701. The frame 702 has an inner end 703 that can be inserted into the placement cavity and an outer end 704 corresponding to the disassembly opening 110. The outer end 704 is provided with a limiting portion 705 for limiting the depth of insertion of the filter 7 into the placement cavity. The limiting portion 705 extends in a first direction L1 that is substantially perpendicular to the insertion direction L of the filter 7. In this embodiment, the first direction L1 is the direction pointing to the front end.

[0085] Further, the outer end 704 is also provided with an operating portion 706 for being operated to insert or remove the filter 7 from the placement cavity. The operating portion 706 extends in a second direction L2 that is substantially perpendicular to the insertion direction L of the filter 7, and the second direction L2 is opposite to the first direction L1. In this embodiment, the second direction L2 is the direction pointing to the rear end.

[0086] As Figure 13 shown, the output shaft of the motor 8 is provided with a fan blade 802 for driving the cooling air flow to flow along the cooling path. When the motor 8 operates to drive the working element 2 to operate, it also synchronously drives the fan blade 802 to rotate to generate a suction force to suck in the external air (cooling air flow). Combining Figure 7 and Figure 9 shown, a wind guide cover 9 for accommodating the motor 8 and the fan blade 802 is provided inside the housing 1. The wind guide cover 9 is provided with an air inlet 901 and an air outlet 902. Specifically, the wind guide cover 9 is a left-right splicing structure, including a first housing 904 located inside and a second housing 905 located outside. The two housings are spliced to form the housing 9. The air inlet 901 is a gap between the first housing 904 and the inner wall of the housing 1, and the air outlet 902 is formed at the joint end of the first housing 904 and the second housing 905.

[0087] In this embodiment, the controller 6 is provided inside the housing 1 and is located on one side of the air inlet 901 of the wind guide cover 9. In this way, the cooling air flow entering the housing 1 will first pass through the controller 6 under the suction of the rotating fan blade 802, and then enter the wind guide cover 9 through the air inlet 901 to cool the motor 8.

[0088] Further, the air guide cover 9 is recessed inward on the side facing the controller 6 to form a guide groove 903. Specifically, a guide member 10 is provided on the side of the air guide cover 9 facing the controller 6, and the guide groove 903 is formed on the guide member 10. The upper end of the guide member 10 is provided with a fixing portion for fixing a wire harness connector, and the wire harness connector is used to connect the wire harness between the controller 6 and the motor 8. The controller 6 is provided with heat dissipation fins 601 on the side facing the air guide cover 9, and the heat dissipation fins 601 extend into the guide groove 903. The air inlet 901 of the air guide cover 9 is provided at a position corresponding to the guide groove 903. In this way, the guide groove 903 can direct or guide the cooling air flow, so that the cooling air flow can only pass through the heat dissipation fins 601 of the controller 6, thereby improving the cooling effect on the controller 6.

[0089] In this embodiment, the controller 6 and the air inlet 901 are located on the side of the air guide cover 9 facing away from the hot air inlet 109. That is, the controller 6 is located at the front end, the hot air inlet 109 is located at the rear end, the air guide cover 9 is located between the two, and the air inlet 901 of the air guide cover 9 is provided at the front end. Since the cooling air flow entering through the cold air inlet 402 of the battery pack 4 will at least partially increase in temperature and become hot air after cooling the battery pack 4, this will reduce the cooling efficiency of the subsequent controller 6 and motor 8. Through the above structural design, the cooling air flow that enters the housing 1 and has partially increased in temperature needs to first bypass the air guide cover 9 and then pass through the controller 6 to cool the controller 6, and finally enter the air guide cover 9 to cool the motor 8. In this way, the flow path of the cooling air flow in the housing 1 is maximally extended, and during this process, the already warmed or heated cooling air flow can be partially cooled down to enhance the subsequent cooling effect on the controller 6 and the motor 8.

[0090] As Figure 1 shown, the housing 1 is provided with a housing air outlet 111 communicating with the air outlet of the air guide cover 9. The cooling path further includes a cooling outlet section, and the cooling outlet section is a spatial path formed by the cooling air flow passing through the air outlet 902 of the air guide cover 9 to the housing air outlet 11 when the gardening tool 100 is in a working state. In this way, the air flow after cooling the motor 8 finally exits from the housing air outlet 111 to complete the cooling of the entire gardening tool 100.

[0091] The above are only several embodiments of the present invention. Those skilled in the art can make various changes or modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention according to the content disclosed in the application documents.

Claims

1. A gardening tool, characterized in that, Comprising: A housing; A working element, a motor, a battery pack and a controller provided in the housing, the motor being used to drive the working element to operate to perform a work task, the battery pack being used to supply electrical energy required for the operation of the motor, and the controller being used to control the motor; A cooling path configured to guide a cooling air flow through the battery pack, the controller and the motor when the gardening tool is in a working state.

2. The gardening tool according to claim 1, characterized in that, The cooling path includes a cooling guiding section for guiding the cooling air flow from a cold air inlet located outside the housing to the housing, and the battery pack, the controller and the motor are all provided on the cooling guiding section; Wherein, the cold air inlet is provided on at least one side wall of the battery pack that is not adjacent to the housing, and a ventilation opening is provided on the side wall of the battery pack adjacent to the housing, and the ventilation opening communicates with the housing.

3. The gardening tool according to claim 2, wherein, The cooling guiding section includes a first guiding section located outside the housing and a second guiding section located inside the housing, and the first guiding section is communicated with the second guiding section through a hot air inlet provided on the housing, and the hot air inlet communicates with the ventilation opening; Wherein, the battery pack is located in the first guiding section, and the controller and the motor are located in the second guiding section.

4. The gardening tool according to claim 3, characterized in that, The first guiding section is configured to form a space path through which the cooling air flow enters the interior of the battery pack through the cold air inlet and discharges from the ventilation opening when the gardening tool is in a working state.

5. The gardening tool according to claim 3, characterized in that, A placement cavity for detachably mounting a filter is provided on the housing corresponding to the hot air inlet, and a dismounting opening for detaching the filter is formed on the wall of the housing on one side of the placement cavity, and the dismounting opening is located in the battery accommodation cavity; Wherein, the battery accommodation cavity is a bracket hollow structure, and the size of the hollow structure corresponding to the dismounting opening is configured to allow the filter to pass through.

6. The gardening tool according to claim 5, characterized in that, When the battery pack is in a state of being received in the battery accommodation cavity, the dismounting opening is not blocked by the battery pack.

7. The gardening tool according to claim 5, characterized in that, The filter includes a filtering element for filtering the cooling air flow and a frame for carrying the filtering element; the frame has an inner end that can be inserted into the placement cavity and an outer end corresponding to the dismounting opening; Wherein, a limiting portion for limiting the insertion depth of the filter into the placement cavity is provided at the outer end, and the limiting portion extends in a first direction substantially perpendicular to the insertion direction of the filter.

8. The gardening tool according to claim 7, characterized in that, An operating portion for operating the filter to be inserted into or removed from the placement cavity is provided at the outer end, and the operating portion extends in a second direction substantially perpendicular to the insertion direction of the filter, and the second direction is opposite to the first direction.

9. The gardening tool according to claim 3, characterized in that, A fan blade for driving the cooling air flow to flow along the cooling path is provided on the output shaft of the motor, and a wind guiding cover for receiving the motor and the fan blade therein is provided in the housing, and an air inlet and an air outlet are provided on the wind guiding cover; Wherein, the controller is provided in the housing and is located on one side of the air inlet of the wind guiding cover.

10. The gardening tool according to claim 9, wherein, The second guiding section is configured to form a spatial path through which the cooling air flow entering the housing through the hot air inlet passes through the controller and then enters the air guiding cover through the air inlet when the gardening tool is in a working state.

11. The gardening tool according to claim 9, wherein, The air guiding cover is recessed inward on the side facing the controller to form a guiding groove, and the controller is provided with heat dissipation fins on the side facing the air guiding cover; the heat dissipation fins extend into the guiding groove, and the air inlet of the air guiding cover is arranged at a position corresponding to the guiding groove.

12. The gardening tool according to claim 9, wherein The controller and the air inlet are located on the side of the air guiding cover facing away from the hot air inlet.

13. The gardening tool according to claim 9, characterized in that, The housing is provided with a housing air outlet communicated with the air outlet of the air guiding cover; The cooling path further includes a cooling outlet section, which is configured to form a spatial path through which the cooling air flow passes from the air outlet of the air guiding cover to the housing air outlet when the gardening tool is in a working state.

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