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] The present application relates to a garden tool. Background Art

[0002] When garden tools are in use, as the controller, motor, battery pack and other heating components continue to work, the temperature of the tool will rise sharply. If the heat is not cooled in time, it will cause great damage to the garden tool, shorten the service life of the battery pack and the garden tool, and also bring potential safety hazards to the user.

[0003] In the prior art, although there are cooling solutions for the controller, motor and battery pack, these cooling solutions cannot cool the above three components at the same time. This also means that there are at least two separate cooling paths for the cooling solutions for the controller, motor and battery pack. Therefore, the structural design of the garden tool is relatively complicated. Utility Model Content

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

[0005] In order to achieve the above object, the present invention provides the following technical solutions.

[0006] A garden tool, comprising:

[0007] case;

[0008] A working element, a motor, a battery pack and a controller are arranged in the housing, wherein the motor is used to drive the working element to operate to perform a working task, the battery pack is used to provide the motor with electrical energy required for operation, and the controller is used to control the motor;

[0009] The cooling path is configured to guide cooling airflow through the battery pack, the controller and the motor when the garden tool is in operation.

[0010] Preferably, the cooling path includes a cooling guide section for guiding the cooling airflow to the shell via a cold air inlet located outside the shell, and the battery pack, controller and motor are all arranged on the cooling guide section. The cold air inlet is arranged on at least one side wall of the battery pack that is not adjacent to the shell, and a vent is arranged on the side wall of the battery pack adjacent to the shell, and the vent is connected to the shell.

[0011] Preferably, the cooling guide section includes a first guide section located outside the shell and a second guide section located inside the shell, the first guide section is connected to the second guide section through a hot air inlet provided on the shell, and the hot air inlet is connected to the vent. 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, the first guide section is configured as a spatial path formed when the cooling airflow enters the interior of the battery pack through the cold air inlet and is discharged from the vent when the garden tool is in working state.

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

[0014] Preferably, when the battery pack is accommodated in the battery accommodating cavity, the disassembly opening is not blocked by the battery pack.

[0015] Preferably, the filter comprises a filter element for filtering the cooling airflow 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 port. The outer end is provided with a limiting portion for limiting the depth of the filter inserted into the placement cavity, and the limiting portion extends along a first direction that is substantially perpendicular to the insertion direction of the filter.

[0016] Preferably, the outer end is provided with an operating portion for being operated to insert or remove the filter into or from the placement cavity, and the operating portion extends along 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 airflow to flow along the cooling path, the housing is provided with an air guide cover for accommodating the motor and the fan blade, and the air guide cover is provided with an air inlet and an air outlet. The controller is arranged in the housing and located on one side of the air inlet of the air guide cover.

[0018] Preferably, the second guide section is configured as a spatial path formed by the cooling airflow entering the housing through the hot air inlet, passing through the controller, and then entering the air guide cover through the air inlet when the garden tool is in working state.

[0019] Preferably, the air guide cover is recessed inwardly on the side facing the controller to form a guide groove, and the controller is provided with loose 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 arranged at a position corresponding to the guide groove.

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

[0021] Preferably, the housing is provided with a casing air outlet connected to the air outlet of the air scoop. The cooling path further comprises a cooling outlet section, which is configured as a spatial path formed by the cooling airflow passing through the air outlet of the air scoop to the casing air outlet when the garden tool is in working state.

[0022] The embodiment of the present invention guides the cooling airflow through the battery pack, the controller and the motor during the flow process through the cooling path, so that the controller, the motor and the battery pack can be cooled and dissipated through a unified cooling path, thereby reducing the structural complexity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of a garden tool according to an embodiment of the present invention;

[0024] Figure 2 for Figure 1 A bottom-up stereogram of

[0025] Figure 3 for Figure 1 and Figure 2 A partial enlarged view of

[0026] Figure 4 for Figure 1 and Figure 2 A three-dimensional view of the middle pot lid;

[0027] Figure 5 for Figure 4 Floor plan of

[0028] Figure 6 for Figure 4 A three-dimensional view of the middle pot body;

[0029] Figure 7 for Figure 1 and Figure 2 A partial enlarged view of

[0030] Figure 8 for Figure 7 Schematic diagram after removing the battery pack;

[0031] Fig. 9 for Figure 7 3D cross-sectional view of

[0032] Fig.10 for Fig. 9 A magnified view of the structure in the middle dashed box;

[0033] Fig.11 for Fig. 9 A perspective view of the middle latch;

[0034] Fig.12 for Fig.11 Floor plan of

[0035] Fig.13 for Fig. 9 A three-dimensional image after removing the shell;

[0036] Fig.14 for Fig.13 Stereoscopic image after removing the fan blades;

[0037] Fig.15 for Fig.13 or Fig.14 A perspective view of the filter. DETAILED DESCRIPTION

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

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

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

[0041] The garden tool 100 of this embodiment can be any type of handheld and needs to be powered by a battery pack for mobile operation, such as a chain saw, a trimmer, a hedge trimmer, etc. The working element 2 is different for different types of garden tools 100. For example, when the garden tool 100 is a chain saw, the working element 2 is a cutting element. When the garden tool 100 is a trimmer, the working element 2 is a trimming element. When the garden 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 of the garden tools 100 listed above, and this embodiment does not limit this. This article mainly describes the chain saw as the main scenario, but based on the above description, it can be seen that the protection scope of the embodiment of the present invention is not limited thereto.

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

[0044] In this embodiment, one of the cover body 3021 and the handle member 3022 is provided with a limiting protrusion 303, and the other is provided with a first limiting groove 304 and a second limiting groove 305 that cooperate with the limiting protrusion 303. Figure 4 and Figure 5 As shown in the solid line structure, when the handle member 3022 is in the storage state, the limiting protrusion 303 is embedded in the first limiting groove 304. Figure 4 and Figure 5 As shown in the dotted line structure, when the handle member 3022 is in the upright 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 cover body 3021 and the handle member 3022, when the handle member 3022 is in the storage state or the standing state, the limiting protrusion 303 is embedded and matched with the corresponding limiting grooves 304, 305. Therefore, the handle member 3022 can better maintain the current state and will not easily rotate without external force.

[0046] like Figure 6As shown, in one embodiment, the first limiting groove 304 and the second limiting groove 305 are arranged at the open end of the cover body 3021, specifically, at the end surface of the open end of the cover body 3021. Correspondingly, the limiting protrusion 303 is arranged on the handle member 3022. In some possible embodiments, the limiting groove is arranged inside the cover body 3021, and then debris and other foreign matter or impurities are easy to enter the cover body 3021 when the handle member 3022 is in an upright state, that is, when the pot lid 302 is opened, and may further enter the limiting groove, which will cause the handle member 3022 to rotate unsmoothly, and may cause the limiting protrusion 303 to be unable to be stuck in the limiting groove, thereby reducing the limiting or fixing strength of the handle member 3022.

[0047] In contrast, in this embodiment, by providing the limiting groove at the open end of the cover body 3021, that is, the limiting grooves 304 and 305 are provided on the outer surface of the cover body 3021, debris or foreign matter generally will not be stably retained in the limiting groove for a long time. In addition, since the limiting grooves 304 and 305 are in an exposed state, even if debris or foreign matter falls into them, they can be easily cleaned. Therefore, the limiting grooves 304 and 305 can better cooperate with the limiting protrusion 303 to achieve stable limiting and fixing of the handle member 3022.

[0048] Furthermore, combined with Figure 3 As shown, a baffle 307 is provided on the housing 1, and the baffle 307 is located on the side of the oil pot 3 close to the working element 2. The baffle 307 is arranged substantially perpendicular to the housing 1, and is substantially arc-shaped to adapt to the cylindrical structure of the oil pot 3, so as to achieve isolation and protection of the oil pot 3. The baffle 307 can prevent the oil pot cover from being loosened due to accidental contact with other objects during the operation of the garden tool 100, including blocking the flying debris generated when the garden tool 100 is working and hitting and adhering to the outer surface of the oil pot 3, which is beneficial for preventing the debris or foreign matter mentioned above from being retained in the limiting grooves 304 and 305.

[0049] like Figure 6 As shown, the open end of the cover body 3021 is stepped, including a first surface 3023 with lower potential energy and a second surface 3024 with higher potential energy, and a step surface 3025 formed between the first surface 3023 and the second surface 3024 for connecting the two surfaces. The first limiting groove 304 is formed on the step surface 3025, and the second limiting groove 305 is formed on the second surface 3024. When in the storage state, the handle member 3022 is in contact with the first surface 3023, and the angle between the handle member 3022 and the first surface 3023 is approximately 0°. In this way, the handle member 3022 is better covered on the open end of the cover body 3021. When in the erected state, the angle between the handle member 3022 and the first surface 3023 is approximately 90°, so that the user can more easily operate the handle member 3022 to rotate.

[0050] Furthermore, if Figure 4 and Figure 5 As shown, for the convenience of user operation, the handle member 3022 includes a knob 3026 for user operation. The knob 3026 is arranged in a manner away from the second surface 3024 when the handle member 3022 is in the storage state, and appropriately extends outward beyond the outer edge of the opening end of the cover body 3021. In this way, the knob 3026 provides a space for the user to hold, so that the user can apply force to it to tilt the handle member 3022 and rotate it upward to the erected state. In the erected state, the user can rotate the handle member 3022 through the knob 3026 to unscrew the cover body 302 from the kettle body 301 or tighten it to the kettle body 301.

[0051] like Figure 6 As shown, the first surface 3023 and the second surface 3024 are both roughly semicircular, and the two are connected at the arc end by two roughly vertical step surfaces 3025, so that when the cover body 302 is observed from a top view, its shape is basically a complete circle. The first limiting groove 304 is arranged at the bottom of the step surface 3025, that is, close to the first surface 3023, and one of its inner sides is flush with the first surface 3023. The second limiting groove 305 is arranged on the second surface 3024 in a manner close to the step surface 3025, that is, the second limiting groove 305 is arranged at a position close to the arc end of the second surface 3024. In this way, the two limiting grooves 304, 305 are close to the rotation fulcrum O of the handle member 3022. Correspondingly, the limiting protrusion 303 can switch between the two limiting grooves 304, 305 only by a small rotation, which means that it becomes easier for the handle member 3022 to switch between the two states.

[0052] Furthermore, the step surface 3025 is an arc surface, which smoothly transitions the first limiting groove 304 and the second limiting groove 305. In this way, the resistance of the limiting protrusion 303 switching between the two limiting grooves 304 and 305 can be reduced, and the resistance of the operating handle member 3022 can be reduced, making it smoother to open or close.

[0053] There are two first limiting grooves 304 and two second limiting grooves 305. The two first limiting grooves 304 are respectively arranged on the two step surfaces 3025, and the two second limiting grooves 305 are respectively arranged at positions close to the arc ends of the second surface 3024. Correspondingly, there are two limiting protrusions 303, which are arranged in a roughly symmetrical manner on both sides of the handle member 3022. In this way, the handle member 3022 forms or is configured with two sets of symmetrical limiting structures, so that the limiting effect of the handle member 3022 is more stable and reliable.

[0054] The pot cover 302 is provided with a sealing ring 306, and the open end of the pot body 301 is provided with an arc-shaped inclined surface 3011. When the cover body 3021 and the pot body 301 are locked, the sealing ring 306 is pressed between the pot body 301 and the arc-shaped inclined surface 3011. In this way, in the process of tightening the pot cover 302 to the pot body 301, the sealing ring 306 is compressed and deformed, and is tightly fitted between the pot body 301 and the arc-shaped inclined surface 3011. With the help of the arc-shaped inclined surface 3011, the compression area with the sealing ring 306 can be increased, and then the sealing joint area between the cover body 302 and the pot body 301 can be increased to ensure the sealing effect.

[0055] like Figures 3 to 6 As shown, an internal thread is formed in the kettle body 301, and an external thread for fastening and matching with the internal thread of the kettle body 301 is formed on the cover body 3021, and the end of the external thread forms a limit end 3027. When the user locks the kettle cover 302 with the kettle body 301, the limit end 3027 of the external thread abuts against the end 3012 of the internal thread to complete the locking operation. Therefore, it can not only effectively prevent the thread stripping phenomenon of the kettle cover 302 after multiple openings or tightening, but also prevent excessive squeezing of the sealing ring 306 when rotating too tightly, thereby avoiding the possibility of accelerating the aging of the sealing ring 306.

[0056] like Figure 8 As shown, the shell 1 is provided with a battery receiving chamber 101 for receiving the battery pack 4. The battery receiving chamber 101 is designed with a bracket hollow structure, which can reduce the weight of the whole machine. The battery receiving chamber 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 receiving chamber 101 is open at the upper end. The battery pack 4 can be inserted into the battery receiving chamber 101 through the upper end opening along the assembly direction F under the guidance of the guide portion 02, or removed from the battery receiving chamber 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 achieving connection with the connecting terminal 103 at the same time.

[0057] like Fig. 9 As shown, a movable latch 5 and a through hole 104 connected to the battery receiving cavity 101 are also provided in the housing 1. Fig.11 and Fig.12 As shown, the latch 5 is close to the end of the battery receiving cavity 101 (such as Figures 8 to 12The latch 5 (shown as the right end) is formed with a locking end 501 for detachable cooperation 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, and the locking end 501 can enter the battery receiving 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 receiving cavity 101 and cooperates with the battery pack 4, so that the battery pack is locked in the battery receiving cavity 101, and 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 is disengaged from the battery pack 4, and the battery pack can be removed from the battery receiving cavity 101, and the battery pack 4 is in an unlocked state.

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

[0059] By providing a movable latch 5 in the housing 1 of the garden tool 100, the latch 5 is moved so that the locking end 501 used to cooperate with the battery pack 4 (locking block 401) is moved into the battery accommodating cavity 101 or retracted into the housing 1, so that the battery pack 4 (locking block 401) can be quickly locked or disengaged, thereby achieving the locking or unlocking of the battery pack 4 in the battery accommodating cavity 101. It can be seen that the present embodiment is a detachable connection and fixing scheme for the battery pack 4 and the housing 1 of the garden tool 100, and the structure is relatively simple. In practice, the user only needs to perform corresponding operations on the latch 5 to unlock the battery pack 4, which is relatively convenient to operate.

[0060] like Figure 1 , Figure 2 , Figure 7 and Fig. 9 As shown, the housing 1 is formed with a handle 105 for the user to hold, the battery receiving chamber 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 located at the proximal end of the garden tool 100 as a whole, or closer to the proximal end relative to the working element 2. The battery receiving chamber 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 receiving chamber 101, that is, the latch 5 is arranged on the handle 105 as a whole and is located at the distal end of the battery receiving chamber 101 of the handle 105.

[0061] By arranging the battery receiving 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 of the handle 105, it means that the latch 5 is relatively close to the battery receiving cavity 101, or the latch 5 is close to its action or cooperation object (battery pack 4). 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 reduced accordingly, thereby effectively reducing the volume of the whole machine and improving space utilization. In addition, the position design of the latch 5 on the handle 105 and the close distance to the battery pack 4 make it convenient for the user to operate the latch 5 even when holding the handle 105, thereby making the unlocking operation of the battery pack 4 relatively simple.

[0062] In addition, the latch 5 is arranged near the proximal end of the handle 105, and the latch 5 is designed to be relatively small in size or volume as described above, so that the majority of the handle 105 that is held by the user is not affected by the provision of the latch 5. Therefore, when the user holds and operates the handle 105, the latch 5 will not interfere, so that the user has a better feeling of use.

[0063] Further, the handle 105 extends roughly along the direction defined by the battery accommodating cavity 101 to the working element 2, that is, the handle 105 extends in the direction from near to far. A placement groove 106 extending roughly in the same direction is formed in the handle 105, and the latch 5 is limited in the placement groove 106 and can slide in the placement groove 106. In this embodiment, the housing 1 (handle 105) is formed by splicing left and right Havers structures, and accordingly, the placement groove 106 is formed by the Havers structures on both sides of the housing 1 abutting against each other. The placement groove 106 for accommodating or limiting the latch 5 is arranged in the handle 105 in a roughly unidirectional manner, which 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 satisfies the free movement amount required for the latch 5 to lock or unlock the battery pack 4, but also makes full use of the functional characteristics of the known structure to the maximum extent, thereby avoiding structural changes and simplifying the structural complexity to the maximum extent.

[0064] like Fig. 9 As shown, an elastic reset member 107 is provided between the housing 1 and the latch 5, and is used to apply an elastic force to the latch 5. The elastic force makes the locking end 501 tend to extend into the battery receiving cavity 101 or keeps the locking end 501 extending into the battery receiving cavity 101, that is, keeps the latch 5 in the locked position or makes the latch 5 tend to move to the locked position. The elastic reset member 107 can be a linear coil spring, and its two ends are biased and arranged on the housing 1 and the latch 5, specifically, one end abuts against the bottom wall of the placement 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 Fig.11Thus, the elastic reset member 107 always exerts an outward force (defined as Figures 7 to 9 to the right, or to the proximal direction, or to the direction of the battery receiving cavity 101), to ensure that in the absence of external force, the locking end 501 of the latch 5 can always remain extended into the battery receiving cavity 101, that is, the battery pack 4 can always be in the desired locked state, avoiding arbitrary movement of the latch 5 and the resulting unexpected unlocking of the battery pack 4.

[0065] like Fig.11 As shown, the end of the latch 5 facing away from the locking end 501 (the inner end referred to 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 is in contact with the inner wall of the housing 1. In this way, the groove 502 can play a role in straightening the compression or extension movement of the elastic reset member 107, ensuring that the elastic reset member 107 can maintain the contact or configuration 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 scratching the inner wall of the placement groove 106 when it is bent unexpectedly, thereby preventing the latch 5 from moving blocked.

[0066] Furthermore, the latch 5 is provided with an outwardly protruding stopper 504, which is located in the seating groove 106 and on the inner side of the penetration hole 104, and is used to limit the outward movement of the latch 5 to prevent the latch 5 from moving outward under the action of the elastic reset member 107 and escaping from the seating groove 106.

[0067] The latch 5 is provided with an unlocking operating member 503, the outer end of which is exposed 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. Figure 7 As shown, the handle 105 is provided with a substantially long strip-shaped opening 108 for exposing the outer end of the unlocking operating member 503, and the long strip shape provides a moving stroke for the unlocking operating member 503. Therefore, in this embodiment, the locking and maintaining of the battery pack 4 by the latch 5 can be achieved by the elastic return member 107. The unlocking of the battery pack 4 by the latch 5 can be achieved by the unlocking operating member 503.

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

[0069] Furthermore, if Figure 7 and Fig. 9As shown, when the battery pack 4 is in the locked state, one end of the battery pack 4 (such as Figure 7 and Fig. 9 The upper end (shown in the figure) is exposed to the outside of the open end of the battery receiving cavity 101. This structural design can be achieved by configuring the depth of the hollow battery receiving cavity 101. Through this design, after unlocking, the user can operate the exposed end portion of the battery pack 4 to take it out of the battery receiving cavity 101 by pinching, holding, pressing, etc., without providing a mechanism in the battery receiving cavity 101 (specifically, the bottom) for popping up the battery pack 4 after it is unlocked (generally speaking, the function of the pop-up mechanism is to expose the upper end of the battery pack 4 to facilitate the user to take out the battery pack 4), thereby simplifying the structure while facilitating the operation of taking out the battery pack 4.

[0070] like Figures 8 to 12 As shown, the locking end 501 has a first locking surface 5011, and the locking block 401 has a second locking surface 4011 (such as Fig.10 As shown). The first locking surface 5011 and the second locking surface 4011 are both planes, wherein 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 accommodating cavity 101 and the locking end 501 is in a state of being locked 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 serve as a stop for the second locking surface 4011, thereby preventing the battery pack 4 equipped with the locking block 401 from moving in a direction away from the assembly direction F (that is, as shown in FIG. 1 ). Fig. 9 The battery pack 4 is moved in the upward direction as shown, so that the battery pack 4 is firmly positioned and fixed in the battery receiving cavity 101.

[0071] Furthermore, the locking end 501 further has an inclined first guide surface 5012, and the locking block 401 further has an inclined second guide surface 4012 (such as Fig.10 The first guide surface 5012 is located upstream of the first locking surface 5011 along the assembly direction F, and the second guide surface 4012 is located downstream of the second locking surface 4011 along the assembly direction F. Fig.12 As shown, the first locking surface 5011 is provided on (or is) the lower surface of the locking end 501, and the first guide surface 5012 is formed on the lower surface of the locking end 501, or is formed by the upper surface of the locking end 501 being tilted downward. Similarly, the second locking surface 4011 is provided on (or is) the upper surface of the locking block 401, and the second guide surface 4012 is formed on the lower surface of the locking block 401, or is formed by the lower surface of the locking block 401 being tilted upward.

[0072] When the battery pack 4 is inserted into the battery receiving cavity 101 along the assembly direction F, the first guide surface 5012 contacts the second guide surface 4012, so that a force is applied to the latch 5, and the force retracts the locking end 501 into the housing 1. In this way, with the cooperation of the two inclined guide surfaces 4012, 5012, it is helpful to reduce the resistance of the battery pack 4 being inserted downward into the battery receiving cavity 101, making it easier to install the battery pack 4.

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

[0074] When the battery pack 4 is inserted into the battery accommodating cavity 101 along the assembly direction F (downward), the second guide surface 4012 on the locking block 401 abuts against the first guide surface 5012 on the locking end 501, thereby pushing the latch 5 to move into the housing 1. At this time, the elastic reset member 107 is in a compressed state. After the battery pack 4 is fully installed in the battery accommodating cavity 101, the elastic reset member 107 is released, pushing the latch 5 to move toward the battery accommodating 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 accommodating cavity 101. At this time, the battery pack 4 and the battery accommodating cavity 101 are in a locked state in which 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 stopping effect on the second guide surface 4012 on the locking block 401. At this time, the battery pack 4 can be removed from the battery accommodating cavity 101, and the two are in an unlocked state where relative movement can occur.

[0076] In this embodiment, the garden tool 100 further includes a cooling path, which guides the cooling airflow through the battery pack 4, the controller 6 and the motor 8 when the garden tool 100 is in operation. Compared with the prior art that can only cool any two of the battery pack 4, the controller 6 and the motor 8, the embodiment of the present invention guides the cooling airflow through the battery pack 4, the controller 6 and the motor 8 during the flow process through the cooling path, so that the controller 6, the motor 8 and the battery pack 4 can be cooled through a unified cooling path, thereby reducing the complexity of the structure.

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

[0078] Specifically, the battery pack 4 includes a battery cell assembly and a battery pack housing for accommodating the battery cell assembly. The battery pack housing is roughly in the shape of a cube and has four side walls along the assembly direction F. The 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 , Fig. 9 , Fig.13 and Fig.14 The other type is the side wall not adjacent to the housing 1, which can be referred to as the outer side wall, that is, Figure 1 , Figure 7 , Fig. 9 , Fig.13 and Fig.14 In this embodiment, in order to increase the 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 proved that there are special benefits by arranging the cold air inlet 402 of the entire cooling path outside the shell 1 and on the battery pack 4. Specifically, because the battery pack 4 is arranged at the proximal end of the shell 1, or is arranged 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 as much as possible, thereby avoiding the cold air inlet 402 from being blocked by debris and ensuring smooth air intake at the cold air inlet 402. In addition, the cold air inlet 402 is arranged by using the battery pack 4, which is an integral component located outside the shell 1, 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 down. 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 guide section includes a first guide section located outside the housing 1 and a second guide section located inside the housing 1. The first guide section guides the cooling airflow for cooling the components located outside the housing 1, that is, the battery pack 4. Therefore, the battery pack 4 is located in the first guide section, and the first guide section is a space path formed when the cooling airflow enters the interior of the battery pack 4 through the cold air inlet 402 and is discharged from the vent when the garden tool 100 is in working state. The space path allows the cooling airflow to flow through the cold air inlet 402, the internal space of the battery pack 4, and the vent in sequence, thereby realizing the cooling of the battery pack 4 (mainly the battery cell assembly).

[0081] Combination Figure 8 As shown, the first guide section is connected to the second guide section through a hot air inlet 109 provided on the housing 1, and the hot air inlet 109 is connected to the vent. Specifically, the hot air inlet 109 is provided on the rear end wall of the housing 1, and corresponds to the vent when the battery pack 4 is in a locked state, so that the two are connected.

[0082] Similarly, the second guide section guides the cooling airflow for cooling the components located inside the housing 1, namely, the controller 6 and the motor 8. Therefore, the controller 6 and the motor 8 are located in the second guide section, and the second guide section is a space path formed by the cooling airflow entering the housing 1 through the hot air inlet 109 when the garden tool 100 is in the working state, passing through the controller 6, and then entering the air guide cover 9 through the air inlet. This space path allows the cooling airflow to flow through the hot air inlet 109 and the internal space of the housing 1 in sequence, thereby achieving cooling of the controller 6 and the motor 8.

[0083] like 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 corresponding hot air inlet 109. The filter 7 is used to filter the cooling airflow entering the housing 1, including dust, wood chips, etc., to prevent the above impurities from entering the housing 1 and affecting the service life of the machine. The placement cavity is formed with a disassembly port 110 for disassembling the filter 7 on the wall on one side of the housing 1, and the disassembly port 110 is located in the battery accommodating cavity 101. In addition, the size of the hollow structure of the battery accommodating cavity 101 corresponding to the disassembly port 110 is configured to allow the filter 7 to pass through. In this way, the installation and disassembly (cleaning) of the filter 7 can be facilitated. Furthermore, when the battery pack 4 is in a state of being received in the battery accommodating cavity 101, the disassembly port 110 is not blocked by the battery pack 4. In this way, even if the battery pack 4 is not disassembled, the installation and disassembly of the filter 7 can still be achieved.

[0084] like Fig.15As shown, the filter 7 includes a filter element 701 for filtering the cooling airflow and a frame 702 for carrying the filter element 701, and 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 port 110. The outer end 704 is provided with a limiting portion 705 for limiting the depth of the filter 7 inserted into the placement cavity, and the limiting portion 705 extends along 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 a direction pointing to the front end.

[0085] Furthermore, the outer end 704 is also provided with an operating portion 706 for being operated to insert or remove the filter 7 into or from the placement cavity, and the operating portion 706 extends along a second direction L2 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 a direction pointing to the rear end.

[0086] like Fig.13 As shown, the output shaft of the motor 8 is provided with a fan blade 802 for driving the cooling airflow to flow along the cooling path. When the motor 8 is in operation to drive the working element 2 to operate, the fan blade 802 is also driven to operate synchronously to generate suction force to draw in the external air (cooling airflow). Figure 7 and Fig. 9 As shown, the housing 1 is provided with an air guide 9 for accommodating the motor 8 and the fan blades 802, and the air guide 9 is provided with an air inlet 901 and an air outlet 902. Specifically, the air guide 9 is a left-right splicing structure, including a first cover shell 904 located on the inner side and a second cover shell 905 located on the outer side, and the two cover shells are spliced ​​to form the housing 9. The air inlet 901 is a gap between the first cover shell 904 and the inner wall of the housing 1, and the air outlet 902 is formed at the joint end of the first cover shell 904 and the second cover shell 905.

[0087] In this embodiment, the controller 6 is disposed in the housing 1 and is located on one side of the air inlet 901 of the air guide hood 9. In this way, the cooling airflow entering the housing 1 will first pass through the controller 6 under the suction effect of the running fan blades 802, and then enter the air guide hood 9 through the air inlet 901 to cool the motor 8.

[0088] Furthermore, the air guide cover 9 is recessed inwardly on the side facing the controller 6 to form a guide groove 903. Specifically, the air guide cover 9 is provided with a guide member 10 on the side facing the controller 6, and the guide groove 903 is formed on the guide member 10. A fixing portion is provided at the upper end of the guide member 10 for fixing a wiring harness connector, which is used to connect the wiring harness between the controller 6 and the motor 8. The controller 6 is provided with a loose fin 601 on the side facing the air guide cover 9, and the heat dissipation fin 601 extends into the guide groove 903, and 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 airflow, so that the cooling airflow can only pass through the heat dissipation fin 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 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 9 is located between the two, and the air inlet 901 of the air guide 9 is arranged at the front end. Since the cooling airflow entering through the cold air inlet 402 of the battery pack 4 will at least partially increase in temperature and become hot air after completing the cooling of the battery pack 4, this will reduce the cooling efficiency of the subsequent controller 6 and the motor 8. Through the above-mentioned structural design, the cooling airflow that enters the housing 1 and has a partial temperature increase must first bypass the air guide 9, then pass through the controller 6 to cool the controller 6, and finally enter the air guide 9 to cool the motor 8. In this way, the flow path of the cooling airflow in the housing 1 is extended to the maximum extent, and in this process, the cooling airflow that has been heated or heated can be partially cooled to enhance the subsequent cooling effect on the controller 6 and the motor 8.

[0090] like Figure 1 As shown, the housing 1 is provided with a housing air outlet 111 connected to the air outlet of the air guide cover 9. The cooling path also includes a cooling outlet section, which is a space path formed by the cooling airflow passing through the air outlet 902 of the air guide cover 9 to the housing air outlet 11 when the garden tool 100 is in the working state. In this way, the airflow after cooling the motor 8 is finally discharged from the housing air outlet 111, completing the cooling of the entire garden tool 100.

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

Claims

1. A garden tool, characterized in that: include: case; A working element, a motor, a battery pack and a controller are arranged in the housing, wherein the motor is used to drive the working element to operate to perform a working task, the battery pack is used to provide the motor with electrical energy required for operation, and the controller is used to control the motor; The cooling path is configured to guide cooling airflow through the battery pack, the controller and the motor when the garden tool is in operation.

2. The garden tool according to claim 1, characterized in that: The cooling path includes a cooling guide section for guiding a cooling airflow to the housing via a cold air inlet located outside the housing, and the battery pack, the controller and the motor are all arranged on the cooling guide section; The cold air inlet is arranged on at least one side wall of the battery pack that is not adjacent to the shell, and a vent is provided on the side wall of the battery pack adjacent to the shell, and the vent is connected to the shell.

3. The garden tool according to claim 2, characterized in that: The cooling guide section comprises a first guide section located outside the shell and a second guide section located inside the shell, the first guide section is connected to the second guide section via a hot air inlet provided on the shell, and the hot air inlet is connected to the vent; The battery pack is located in the first guide section, and the controller and the motor are located in the second guide section.

4. The garden tool according to claim 3, characterized in that: The first guide section is configured as a spatial path formed when the cooling airflow enters the interior of the battery pack through the cold air inlet and is discharged from the vent when the garden tool is in working state.

5. The garden tool according to claim 3, characterized in that: The housing is provided with a placement cavity for detachably installing the filter at a position corresponding to the hot air inlet, and a disassembly opening for disassembling the filter is formed on a wall of one side of the housing, and the disassembly opening is located in the battery accommodating cavity; The battery accommodating cavity is a bracket hollow structure, and the size of the hollow structure corresponding to the disassembly port is configured to allow the filter to pass through.

6. The garden tool according to claim 5, characterized in that: When the battery pack is accommodated in the battery accommodating cavity, the disassembly opening is not blocked by the battery pack.

7. The garden tool according to claim 5, characterized in that: The filter comprises a filter element for filtering the cooling airflow 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 port; The outer end is provided with a limiting portion for limiting the depth of the filter inserted into the placement cavity, and the limiting portion extends along a first direction substantially perpendicular to the insertion direction of the filter.

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

9. The garden tool according to claim 3, characterized in that: The output shaft of the motor is provided with a fan blade for driving the cooling airflow to flow along the cooling path, the housing is provided with an air guide cover for accommodating the motor and the fan blade, and the air guide cover is provided with an air inlet and an air outlet; Wherein, the controller is arranged in the shell and is located on one side of the air inlet of the air guide cover.

10. The garden tool according to claim 9, characterized in that: The second guide section is configured as a spatial path formed by the cooling airflow entering the housing through the hot air inlet and then passing through the controller when the garden tool is in working state, and then entering the air guide cover through the air inlet.

11. The garden tool according to claim 9, characterized in that: The air guide cover is recessed inwardly on a side facing the controller to form a guide groove, and the controller is provided with heat dissipation fins on a 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 arranged at a position corresponding to the guide groove.

12. The garden tool according to claim 9, characterized in that: The controller and the air inlet are located on a side of the air guide cover facing away from the hot air inlet.

13. The garden tool according to claim 9, characterized in that: The housing is provided with a housing air outlet connected to the air outlet of the air guide cover; The cooling path also includes a cooling outlet section, which is configured as a spatial path formed by the cooling airflow passing through the air outlet of the air guide cover to the air outlet of the casing when the garden tool is in a working state.

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