Garden tool

Abstract

The utility model relates to a gardening tool which comprises a shell extending in the axial direction, a handle connected to the shell, a power assembly located in the shell and a battery pack connected to the shell, the shell comprises an air inlet, an air outlet and an airflow channel connected between the air inlet and the air outlet, and the battery pack is obliquely connected to the shell along a first straight line. The handle comprises a first end, a second end and a holding part located between the first end and the second end in the axial direction, and the gardening tool has a first working state and a second working state placed on the ground; the holding part forms a projection area in the vertical direction, the gravity center of the gardening tool in the second state is located in an area defined by the first straight line, the holding part and the projection area when the gardening tool is observed in the transverse direction, and therefore when the gardening tool is in the first state, a user does not need to apply any extra force except for holding the gardening tool, and the user experience is improved. The gardening tool can naturally droop, the operation comfort is improved, and the fatigue feeling of a user is relieved.

Description

Technical Field

[0001] This utility model relates to a garden tool, and more particularly to a garden tool that is comfortable to hold. Background Technology

[0002] Garden tools include a housing, a duct housed within the housing, a motor located within the duct, and a fan driven by the motor. When in operation, air is drawn into the duct through the air inlet and then blown out through the air outlet, thereby blowing fallen leaves or dust to a specific location.

[0003] Garden tools are often used on the ground or on a workbench that is shorter than the user's height. Therefore, garden tools need to be tilted downwards when in use, which means that users need to apply additional downward force when holding the tools, which can easily cause fatigue during long-term operation.

[0004] Therefore, it is indeed necessary to provide an improved garden tool to overcome the shortcomings of existing technology. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a garden tool that is comfortable to hold.

[0006] The present invention can solve the existing technical problems by adopting the following technical solution:

[0007] A garden tool includes an axially extending housing, a handle connected to the housing, a power assembly located within the housing, and a battery pack connected to the housing. The housing includes an air inlet, an air outlet, and an airflow channel connecting the air inlet and the air outlet. The battery pack is obliquely connected to the housing along a first straight line. The handle includes a first end, a second end, and a grip portion located axially between the first end and the second end. The garden tool includes a first working state and a second state placed on the ground. The grip portion forms a projection area in the vertical direction. When viewed laterally, the center of gravity of the garden tool in the second state is located within the area enclosed by the first straight line, the grip portion, and the projection area.

[0008] A further improvement is as follows: when viewed laterally, the center of gravity of the garden tool is located between the first straight line and the power component.

[0009] A further improvement is as follows: the power component includes a motor and a fan driven by the motor to rotate, and the center of gravity of the garden tool is located between the first straight line and the fan.

[0010] A further improvement is that the motor is at least partially located in front of the projection area in the axial direction.

[0011] A further improvement is as follows: the housing includes a mounting portion connected to the rear side of the second end, the battery pack is detachably connected to the mounting portion, the mounting portion extends obliquely from the air inlet toward the rear side and is axially spaced from the air inlet by a clearance area.

[0012] A further improvement is as follows: the avoidance area is formed by an upward indentation from the air inlet, and the garden tool includes an air inlet cover installed within the avoidance area.

[0013] A further improvement is as follows: the air inlet axially extends through the rear end of the housing, and when the garden tool is in the second state, viewed laterally, the first straight line intersects with the air inlet.

[0014] A further improvement is that the battery pack is located above the air inlet and extends at least partially downward to the rear of the air inlet.

[0015] A further improvement is as follows: when the garden tool is in the first state, the first straight line is approximately parallel to the vertical direction.

[0016] A further improvement is as follows: the garden tool includes a support portion located on the lower side of the airflow channel, the support portion supporting the garden tool in the second state and the support portion at least partially overlapping the projection area in the axial direction.

[0017] Compared with the prior art, the present invention has the following beneficial effects: by setting the center of gravity of the garden tool in the area enclosed by the first straight line, the grip part and the projection area, the garden tool can hang down naturally when it is in the first state without the user having to apply any additional force other than holding the garden tool, thereby improving the comfort of operation and reducing user fatigue. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the garden tool in the second state according to a preferred embodiment of the present invention;

[0019] Figure 2 for Figure 1 The diagram shows the structure of the garden tools in their first state.

[0020] Figure 3 for Figure 1 A partial sectional view of the garden tools shown;

[0021] Figure 4 for Figure 3 A partial schematic diagram of the air inlet of the garden tool shown;

[0022] Figure 5 for Figure 4A magnified view of the air inlet of the garden tool shown.

[0023] Meaning of the reference numerals in the diagram:

[0024] Hair dryer 100, battery pack 200

[0025] 10 Housing 11 Airflow channel

[0026] Air inlet 12 Air outlet 13

[0027] Handle 14 First end 141

[0028] Second end 142 Holding part 143

[0029] Projection area 144 Support part 15

[0030] Installation section 16, avoidance area 161

[0031] Air intake area 17, air intake hood 20

[0032] Grille 21 Radial groove 22

[0033] Motor 30 Drive shaft 31

[0034] Fan 40, Airflow guide 50

[0035] Part 1 501 Part 2 502

[0036] Transition section 51, guide section 52

[0037] First guide section 521 Second guide section 522 Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0039] The terminology used in this invention is for the purpose of describing specific embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "front," "rear," "axial," "lateral," "vertical," "circumferential," and "radial," which indicate orientation or positional relationships, are based solely on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0040] Please refer to Figures 1 to 3As shown, this utility model relates to a garden tool, and more particularly to a hair dryer 100, including a housing 10 extending axially, a power component located within the housing 10, and a battery pack 200 detachably connected to the housing 10. The battery pack 200 is electrically connected to the power component to provide power to the power component.

[0041] The housing 10 includes an airflow channel 11 extending generally along the axial direction, and an air inlet 12 and an air outlet 13 located at both ends of the airflow channel 11 along the axial direction. The air inlet 12 passes through the rear end of the housing 10 along the axial direction, and the air outlet 13 passes through the front end of the housing 10 along the axial direction. The airflow channel 11 connects the air inlet 12 and the air outlet 13. The air inlet 12, the airflow channel 11, and the air outlet 13 are generally aligned in the axial direction.

[0042] The garden tool also includes a handle 14 connected to the upper side of the housing 10 and a support 15 connected to the lower side of the housing 10. The handle 14 is located above the airflow channel 11 and is spaced a certain distance from the housing 10 for the user to hold. The support 15 is located below the airflow channel 11 and is used to support the garden tool on the ground or work surface.

[0043] The handle 14 includes a first end 141 connected to the housing 10, a second end 142 axially spaced from the first end 141, and a grip portion 143 located axially between the first end 141 and the second end 142. The grip portion 143 extends generally along the axial direction, and may extend parallel to the axial direction or extend at a certain angle relative to the axial direction.

[0044] The housing 10 includes a mounting portion 16 connected to the rear side of the second end 142, along which the battery pack 200 is detachably connected. The mounting portion 16 extends obliquely along a first straight line L1 so that the battery pack 200 is detachably connected to the housing 10 along the first straight line L1.

[0045] The housing 10 also includes a receiving space located between the airflow channel 11 and the grip portion 143. The garden tool includes a control board housed in the receiving space. The control board is electrically connected to the battery pack 200 and the power assembly, thereby controlling the operating state of the power assembly and switching the garden tool between a first state when it is held or worked by the user and a second state when it is stationary on the ground or workbench.

[0046] The mounting portion 16 extends obliquely from the air inlet 12 toward the rear and is axially spaced by a clearance area 161 from the air inlet 12. The mounting portion 16 is located approximately on the upper rear side of the air inlet 12. The battery pack 200 is mounted to the mounting portion 16, obliquely located above the air inlet 12 and extending at least partially downward to the rear side of the air inlet 12. When the garden tool is in the second state, viewed laterally, the first straight line L1 on which the battery pack 200 is mounted intersects with the air inlet 12, and the bottom portion of the battery pack 200 is located on the rear side of the air inlet 12. This arrangement allows some airflow to circulate around a portion of the surface of the battery pack 200 before entering the air inlet 12, thereby cooling the battery pack 200.

[0047] The portion of the housing 10 between the mounting portion 16 and the air inlet 12 is recessed upward to form part of the clearance area 161. The garden tool includes an air inlet cover 20 installed in the clearance area 161. The clearance area 161 is formed by the upward recess from the air inlet 12, so that the air inlet cover 20 and the mounting portion 16 are installed in the air inlet 12 without interference.

[0048] The power unit is located in the airflow channel 11 and includes a motor 30 and a fan 40 connected to the motor 30. The motor 30 drives the fan 40 to rotate and generate airflow. The airflow enters the airflow channel 11 from the air inlet 12, is pressurized by the rotation of the fan 40, flows axially along the airflow channel 11, and then flows out through the air outlet 13, forming a working airflow for blowing off leaves, gravel, or debris.

[0049] The motor 30 includes a drive shaft 31 extending axially, and the fan 40 includes a hub connected to the drive shaft 31 and fan blades extending from the hub. The fan 40 is located axially rearward of the motor 30. An air intake area 17 is spaced between the air inlet 12 and the fan 40, and in the vertical direction, the air intake area 17 is located approximately directly below the grip portion 143.

[0050] The grip portion 143 forms a projection area 144 in the vertical direction, and the air intake area 17 is generally located within the projection area 144. The fan 40 is at least partially located within the projection area 144, and the motor 30 is generally located in the axial direction at the front of the projection area 144. The battery pack 200 is located in the axial direction at the rear of the projection area 144.

[0051] The weight of the garden tool is mainly concentrated in the battery pack 200, the power unit, and the housing 10 itself. Since the grip 143 is located approximately at the axial rear end of the airflow channel 11, in order to ensure user comfort during long-term operation, the center of gravity of the garden tool is set directly below the grip 143, i.e., within the projection area 144, to ensure relative weight balance between the front and rear sides of the user's grip fulcrum.

[0052] Therefore, the garden tool of this utility model has the battery pack 200 inserted obliquely on the rear side of the handle 14 and the power component roughly set on the front side of the handle 14, so that the weight of the garden tool is relatively concentrated and roughly distributed on the front and rear sides of the grip 143, thereby setting the center of gravity within the projection area 144, improving the user's operating comfort and avoiding fatigue after long-term operation.

[0053] The battery pack 200 is obliquely mounted on the rear side of the second end 142 of the grip portion 143 along the first straight line L1. When viewed laterally, the center of gravity of the garden tool in the second state is located within the area enclosed by the first straight line L1, the grip portion 143, and the projection area 144. In addition, the power component is located on the front side of the projection area 144. When viewed laterally, the center of gravity of the garden tool in the second state is located between the first straight line L1 and the power component.

[0054] This arrangement allows the garden tools to hang naturally in their initial working state without requiring the user to apply downward force. The airflow channel 11 is set at an angle towards the bottom, meaning the air outlet is set towards the ground, further reducing user fatigue.

[0055] In this embodiment, when the garden tool is in the first state, the first straight line L1 is approximately parallel to the vertical direction. The weight of the battery pack 200 exerts only a downward force on the user's hand, without any other directional force, which can further improve the comfort of holding the tool.

[0056] When the garden tool is in the second state, the garden tool is supported on the ground or workbench by the support part 15. The support part 15 overlaps at least partially with the projection area 144 in the axial direction, so that the center of gravity of the garden tool is located between the front and rear ends of the support part 15 in the axial direction, thereby improving the stability of the support.

[0057] like Figure 1 and Figure 2 As shown, due to the different angles between the garden tool and the vertical direction in the first and second states, the range of the projection area 144 also changes accordingly. The center of gravity of the garden tool is located within the area enclosed by the projection area 144 in both the first and second states.

[0058] When the garden tool is in its second state, its center of gravity is set within the area enclosed by the first straight line L1, the grip 143, and the projection area 144. This ensures that when the garden tool is in its first state, the weight of the battery pack 200 is located behind the user's grip point and vertically downwards, while the weight of the power unit is approximately located in front of the user's grip point. Without the user applying any additional force beyond holding the garden tool, it can hang naturally, improving operational comfort and reducing user fatigue. When the garden tool is in its second state, its center of gravity is located within the projection area 144 and between the two axial ends of the support 15, providing stable support.

[0059] Please refer to Figures 3 to 5 As shown, the garden tool includes a housing 10, a motor 30 and a fan 40 located inside the housing 10. The housing 10 includes an air inlet 12, an air outlet 13 and an airflow channel 11 located between the air inlet 12 and the air outlet 13. The motor 30 drives the fan 40 to rotate and generate airflow flowing in the airflow channel 11.

[0060] The cross-section of the airflow channel 11 is approximately cylindrical. The garden tool includes an airflow guide 50 that is radially outward from the air inlet 12 along the airflow channel 11. The airflow guide 50 is used to bend at least part of the airflow and guide it into the airflow channel 11.

[0061] The airflow guide 50 includes a transition portion 51 connected to the air inlet 12 and a guide portion 52 connected to the transition portion 51. The transition portion 51 is smoothly connected to the air inlet 12, and the guide portion 52 is located on the radially outer side of the air inlet 12. The outer peripheral walls of both the transition portion 51 and the guide portion 52 are configured as smooth curved surfaces, and the arc angle formed by these curved surfaces is greater than 90°, so that the airflow on the radial side of the air inlet 12 can be guided by the airflow guide 50 into the airflow channel 11, thereby improving the air intake efficiency.

[0062] The transition section 51 is configured as a smooth curved surface structure extending axially backward and radially outward from the air inlet 12. There are no gaps or steps at its connection with the air inlet 12 that would affect the pre-flow direction of the airflow, allowing the airflow to smoothly enter the air inlet 12 along the transition section 51. The curved surface structure of the transition section 51 is less than or equal to 90°.

[0063] The guide section 52 extends radially outward from the transition section 51, and the tangent L2 at the connection between the guide section 52 and the transition section 51 is substantially perpendicular to the extending direction of the airflow channel 11. In this embodiment, the airflow channel 11 extends approximately axially, and the air inlet 12 is located at the axial rear end of the airflow channel 11, so the extending direction of the airflow channel 11 is the axial direction. In other embodiments, the air inlet 12 may also be formed by tilting downward or upward, in which case the extending direction of the airflow channel 11 is configured as a curved extending direction. The above-mentioned substantially perpendicular means that the tangent L2 at the connection between the guide section 52 and the transition section 51 is substantially perpendicular to the extending direction of the airflow channel 11 at the corresponding airflow guide 50, which can be exactly 90°, or the deviation can be allowed to be within 10°.

[0064] The airflow direction at the transition section and the airflow direction at the guide section have opposite components in the extension direction of the airflow channel. That is, the transition section extends backward at an angle from the air inlet, and the guide section extends from the transition section and at least partially forward, thereby increasing the radiation area of ​​the bend in the airflow guide and thus increasing the airflow guiding area. Setting the components of the airflow direction at the transition section and the guide section to opposite directions allows the transition section and the guide section to be inclined and smoothly curved structures, rather than abrupt right-angle or acute-angle structures, further improving the effect of guiding the airflow from the radially outer and front sides of the air inlet into the airflow channel.

[0065] In the extending direction of the airflow channel 11, the air inlet shroud 20 is mounted to the rear side of the air inlet 12. The guide portion 52 extends radially outward from the transition portion 51 and extends forward away from the air inlet shroud 20 in the extending direction of the airflow channel 11. The guide portion 52 includes a first guide portion 521 connected to the transition portion 51 and a second guide portion 522 inclined forward from the first guide portion 521 in the extending direction of the airflow channel 11.

[0066] The outer surfaces of the first guide section 521 and the transition section 51 form a continuous and smooth curved surface. The front end of the second guide section 522 extends obliquely from the outer peripheral wall of the airflow channel 11, and its radial dimension gradually increases from front to back in the extension direction of the airflow channel 11. The cross-section of the airflow guide 50 in the extension direction parallel to the airflow channel 11 is approximately teardrop-shaped with a pointed front and a wide rear, that is, the arc angle formed by the entire airflow guide 50 is greater than 90° and less than 360°.

[0067] The airflow guide 50 can be integrally formed with the air inlet 12, or it can be partially located on the air inlet cover 20 and partially located at the air inlet 12. For example... Figure 4 and Figure 5 As shown, the airflow guide 50 includes a first part 501 located on the air inlet shroud 20 and a second part 502 located on the housing 10. The first part 501 and the second part 502 are smoothly connected in the airflow direction and without obstruction to the airflow.

[0068] The aforementioned "smooth" and "unobstructed airflow" connection does not mean that the airflow guide 50 must be connected without any breaks. It can also have gaps, step breaks, or irregular curved surface structures, as long as it can ensure that the airflow can be smoothly guided along the pre-flow direction when flowing on the outer peripheral wall of the airflow guide 50, without any break in the airflow or sudden large-scale bending.

[0069] like Figure 5 As shown, although a notch is provided at the connection between the first guide section 521 and the second guide section 522, since the first guide section 521 is radially lower than the second guide section 522, the airflow is not obstructed when passing through the notch and can continue to be guided along the outer peripheral wall of the first guide section 521. Therefore, as long as the airflow can flow continuously, it meets the above-mentioned "smooth" and "unobstructed airflow" connection.

[0070] The air inlet shroud 20 is detachably mounted to the rear end of the air inlet 12 to prevent large debris from being carried into the airflow channel 11 by the airflow. The air inlet shroud 20 includes several spaced grilles 21, radial grooves 22 located between the grilles 21, and the aforementioned first portion 501 extending radially outward from the grilles 21. The second portion 502 is located approximately on the front and rear sides of the air inlet 12 in the extension direction of the airflow channel 11, respectively.

[0071] The first part 501 has several mounting holes in the circumferential direction. Screws pass through the mounting holes to mount the air inlet shroud 20 to the housing 10. The transition part 51 and the first guide part 521 constitute the first part 501, and the second guide part 522 constitutes the second part 502. The tangent L3 at the connection between the first part 501 and the second part 502 is substantially parallel to the extending direction of the airflow channel 11.

[0072] The second part 502 extends obliquely from the outer peripheral wall of the airflow channel 11 and its radial dimension gradually increases from front to back in the extension direction of the airflow channel 11, so that the airflow located on the radially outer and front sides of the air inlet 12 can be guided by the second part 502, and then guided by the first part 501 into the airflow channel 11, thereby increasing the air intake volume without increasing the size of the air inlet 12.

[0073] The housing 10 includes a support 15 for supporting garden tools, which is located at the bottom of the airflow channel 11. The support 15 is located in front of the air inlet 12 in the extending direction of the airflow channel 11, so that the airflow at the radial bottom of the airflow channel 11 is not blocked by the support and can be guided into the airflow channel 11 without obstruction by the airflow guide 50.

[0074] The airflow guide 50 overlaps at least partially with the support 15 in the extension direction of the airflow channel 11, and an airflow buffer area S1 is provided between the support 15 and the airflow guide 50. The airflow in the airflow buffer area S1 is bent under the guidance of the airflow guide 50 and enters the airflow channel 11.

[0075] Motor 30 drives fan 40 to rotate, making the air pressure difference inside airflow channel 11 less than the air pressure difference outside housing 10. Outside air enters airflow channel 11 from air inlet 12 under the influence of this pressure difference, thus realizing the working principle of hair dryer 100. This invention, without increasing the size of air inlet 12, provides an airflow guide 50 at air inlet 12, thereby guiding airflow from the radially outer side of air inlet 12 or the outer peripheral wall of airflow channel 11 into airflow channel 11, increasing airflow volume and improving airflow efficiency.

[0076] The airflow guide 50 can be integrally formed with the housing 10, or it can be implemented by cooperating with the housing 10 through the air inlet shroud 20 as described above. The airflow at the outer peripheral wall of the airflow buffer area S1 and the airflow channel 11 flows backward under the guidance of the inclined second guide 522, smoothly transitions to the first guide 521 at the connection between the first guide 521 and the second guide 522, and is then guided by the first guide 521 to enter the guiding area of ​​the transition section 51 from the radial groove 22 between the grilles 21, and then guided into the airflow channel 11 through the transition section 51.

[0077] Previously, only the airflow behind the air inlet 12 could enter the airflow channel 11 under the influence of air pressure difference. Even if the tail end of the air inlet 12 was set as an outwardly inclined cone-shaped structure, only the airflow within the area radiating backward from the cone-shaped structure could be guided into the airflow channel 11. However, the airflow located radially outside or in front of the cone-shaped structure could not be smoothly guided into the airflow channel 11 because it was blocked by the cone-shaped tail end of the air inlet 12. This resulted in no increase in air intake efficiency despite enlarging the size of the air inlet 12.

[0078] The hair dryer 100 of this utility model expands the radiation area of ​​the air inlet 12 to the radially outer and front regions by setting an airflow guide 50 at the air inlet 12, so that the airflow on the radially outer or front side of the air inlet 12 can be guided into the airflow channel 11, which reduces the size and improves the air intake efficiency.

[0079] This utility model is not limited to the specific embodiments described above. Those skilled in the art will readily understand that many alternative solutions exist for the garden tools of this utility model without departing from the principles and scope thereof. The scope of protection of this utility model is defined by the claims.

Claims

1. A garden tool, comprising an axially extending housing, a handle connected to the housing, a power assembly located within the housing, and a battery pack connected to the housing, the housing including an air inlet, an air outlet, and an airflow channel connecting the air inlet and the air outlet, the battery pack being obliquely connected to the housing along a first straight line, the handle including a first end, a second end, and a grip portion axially located between the first end and the second end, the garden tool including a first state in operation and a second state placed on the ground; characterized in that: The grip portion forms a projection area in the vertical direction. When viewed horizontally, the center of gravity of the garden tool in the second state is located within the area enclosed by the first straight line, the grip portion, and the projection area.

2. The garden tool according to claim 1, characterized in that: Viewed laterally, the center of gravity of the garden tool is located between the first straight line and the power component.

3. The garden tool according to claim 2, characterized in that: The power unit includes a motor and a fan driven by the motor to rotate, and the center of gravity of the garden tool is located between the first straight line and the fan.

4. The garden tool according to claim 3, characterized in that: The motor is located at least partially in front of the projected area in the axial direction.

5. The garden tool according to claim 1, characterized in that: The housing includes a mounting portion connected to the rear side of the second end, the battery pack being detachably connected to the mounting portion, the mounting portion extending obliquely from the air inlet toward the rear side and having an axially spaced clearance area from the air inlet.

6. The garden tool according to claim 5, characterized in that: The avoidance area is formed by an upward indentation from the air inlet, and the garden tool includes an air inlet cover installed within the avoidance area.

7. The garden tool according to claim 1, characterized in that: The air inlet extends axially through the rear end of the housing. When the garden tool is in the second state, viewed laterally, the first straight line intersects with the air inlet.

8. The garden tool according to claim 7, characterized in that: The battery pack is located above the air inlet and extends at least partially downward to the rear of the air inlet.

9. The garden tool according to claim 1, characterized in that: When the garden tool is in the first state, the first straight line is approximately parallel to the vertical direction.

10. The garden tool according to claim 9, characterized in that: The garden tool includes a support portion located below the airflow channel, which supports the garden tool in the second state and at least partially overlaps the projection area in the axial direction.

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