Lawn mower

Abstract

The mower comprises a mower body, a battery, a controller and a motor, wherein the battery, the controller and the motor are contained in the mower body. The machine body is provided with an air inlet, an air outlet and an air channel from the air inlet to the air outlet. The battery, the controller and the motor are all arranged in the air duct, so that airflow generated by a cooling fan of the motor flows along the air duct to take away heat of the battery, the controller and the motor. An air inlet cavity and a battery cavity are arranged in the machine body, and the air inlet cavity is communicated with the outside through an air inlet. The battery cavity is located above the air inlet cavity, and a first communication hole is formed in the wall part for separating the air inlet cavity and the battery cavity. And the air duct sequentially extends through the air inlet cavity, the first communicating hole and the battery cavity. Due to the existence of the air inlet cavity, the space below the battery cavity is relatively wide, so that the size of the wall part between the air inlet cavity and the battery cavity is relatively large. The wall part with the larger size allows the first communication hole with the larger area to be formed in the wall part, and the first communication hole with the larger area is favorable for reducing the flow resistance and increasing the flow, so that the heat dissipation of the battery can be effectively carried out in time.

Description

Technical Field

[0001] The present disclosure relates to the technical field of garden tools, and in particular, to a lawn mower. Background Art

[0002] A lawn mower is a mechanical tool used to trim lawns, vegetation, etc. Its appearance saves the labor time of gardening operations and reduces the labor intensity of gardening operations.

[0003] Some lawn mowers have batteries that provide electrical power to the lawn mower. The addition of batteries helps lawn mowers get rid of the constraints of power cords, allowing lawn mowers to mow areas far from power sources and to move more freely.

[0004] During the operation of the lawn mower, the battery will continue to heat up. If the heat cannot be dissipated in a timely and effective manner, it will have an adverse effect on the safety and life of the battery. Summary of the invention

[0005] In view of this, the present disclosure provides a lawn mower, aiming to solve the problem that it is difficult for the battery of a traditional lawn mower to dissipate heat in a timely and effective manner.

[0006] The lawn mower provided by the present disclosure includes a body and a battery, a controller and a motor housed in the body. The body is provided with an air inlet, an air outlet and an air duct from the air inlet to the air outlet. The battery, the controller and the motor are all arranged in the air duct, so that the airflow generated by the cooling fan of the motor flows along the air duct to take away the heat of the battery, the controller and the motor. An air inlet chamber and a battery chamber are provided in the body, and the air inlet chamber is connected to the outside through the air inlet. The battery chamber is located above the air inlet chamber, and a first connecting hole is provided on the wall separating the air inlet chamber and the battery chamber. The air duct extends through the air inlet chamber, the first connecting hole and the battery chamber in sequence.

[0007] According to the lawn mower provided by the present disclosure, the airflow will first be introduced into the air inlet cavity below the battery cavity, and then enter the battery cavity from bottom to top through the first connecting hole of the wall between the air inlet cavity and the battery cavity, thereby taking away the heat of the battery. Due to the existence of the air inlet cavity, the space below the battery cavity is relatively open, which makes the wall between the air inlet cavity and the battery cavity larger in size. Furthermore, the larger-sized wall allows a larger-area first connecting hole to be opened thereon, and the larger-area first connecting hole is conducive to reducing flow resistance and increasing flow, thereby facilitating more timely and effective heat dissipation of the battery.

[0008] As a possible implementation, the lawn mower further includes an air guide hood accommodated in the body and located on one side of the battery cavity. The air guide hood is open toward the side where the battery cavity is located and is open downward, and a second communication hole is provided on the side wall of the battery cavity facing the air guide hood. The air duct extends through the battery cavity, the second communication hole and the inside of the air guide hood in sequence.

[0009] Since the air guide hood is open toward the side where the battery cavity is located and the side wall of the battery cavity facing the air guide hood is provided with a second connecting hole, the airflow will flow from the battery cavity to the air guide hood through the second connecting hole to remove the heat from the battery. In addition, since the air guide hood is open toward the side where the battery cavity is located and is open downward, the airflow entering the air guide hood will change from lateral flow to longitudinal downward flow under the guidance of the air guide hood, and then flow through the controller and the motor to remove the heat from the controller and the motor. In addition, the heat dissipation airflow can enter the battery cavity from the bottom of the battery cavity and flow out of the battery cavity from one side of the battery cavity. In this process, the airflow is able to contact a larger proportion of the outer surface of the battery, removing more heat from the battery.

[0010] As a possible implementation manner, the controller is at least partially housed in the air guide cover.

[0011] In this way, when the airflow passes through the air guide cover, it can effectively take away the heat from the controller and its surroundings, thereby dissipating the heat of the controller in a timely and effective manner.

[0012] As a possible implementation manner, the motor is located below the air guide cover.

[0013] Since the motor is located below the air guide cover, and the air guide cover can guide the airflow from the battery cavity to flow downward, the airflow leaving the air guide cover will flow to the motor, thereby taking away the heat from the motor and its surroundings, effectively and timely dissipating the heat from the motor, and ensuring the safety and stability of the motor.

[0014] As a possible implementation, a cooling fan of the motor is disposed at an upper end of the motor.

[0015] The cooling fan of the motor is located at the upper end of the motor, that is, in the cooling air duct. When the cooling fan is working, it will push and accelerate the surrounding air to form an airflow flowing along the air duct. When the airflow flows through the battery, controller and motor, it will take away their heat and dissipate the heat.

[0016] As a possible implementation manner, the fuselage includes a base and a shell mounted on the base, and the air inlet is at least partially formed by a gap between the base and the shell.

[0017] Since the air inlet is at least partially formed by the gap between the base and the shell, there is no need or less need to open additional holes on the fuselage as air inlets, which is conducive to reducing the complexity of the fuselage structure and improving the strength of the fuselage.

[0018] As a possible implementation, the lawn mower further includes a cutting tool located below the body. A projection hole is provided at the bottom of the body. The output end of the motor extends through the projection hole to be transmission-connected with the cutting tool. The air outlet is at least partially defined by the projection hole. In particular, the output end includes a connecting portion, the cutting tool is transmission-connected with the connecting portion, and the air outlet is at least partially formed by a gap between the connecting portion and the projection hole.

[0019] In this implementation, the air outlet of the air duct is at least partially defined by the extension hole, and in particular, at least partially formed by the gap between the connecting portion and the extension hole. In this way, there is no need or less need to open additional holes on the fuselage as air outlets, which is conducive to reducing the complexity of the fuselage structure and improving the strength of the fuselage.

[0020] As a possible implementation manner, the lawn mower further includes a battery holder detachably mounted in the body, and the battery cavity is at least partially defined by the battery holder.

[0021] In this implementation, the battery cavity is defined by a battery holder detachably mounted on the fuselage, rather than being defined by a structure integrally formed with the fuselage, which helps to reduce the complexity of the fuselage structure and further reduce the difficulty of manufacturing the fuselage.

[0022] As a possible implementation, a battery inlet and outlet is provided at the top of the body, and the battery can be loaded into or removed from the battery cavity through the battery inlet and outlet. The lawn mower also includes a cover plate, which can be switched between a position of opening the battery inlet and outlet and a position of closing the battery inlet and outlet.

[0023] Under normal circumstances, the cover can cover the battery inlet and outlet to prevent the battery from being exposed to the outside world, which is beneficial to protecting the battery and improving the aesthetics of the lawn mower. When the battery needs to be observed or maintained, it is only necessary to switch the position of the cover to perform the required operation more conveniently, so this implementation method helps to improve the convenience of battery maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and should not be viewed as limiting the scope.

[0025] It should be understood that the same or similar reference numerals are used in the drawings to indicate the same or similar elements.

[0026] It should be understood that the drawings are merely schematic and that the sizes and proportions of elements in the drawings are not necessarily accurate.

[0027] Figure 1 A schematic structural diagram of a lawn mower provided in one embodiment of the present disclosure.

[0028] Figure 2 for Figure 1 Exploded diagram of a lawn mower.

[0029] Figure 3 for Figure 1 A schematic cross-sectional view of a portion of a lawn mower.

[0030] Figure 4 for Figure 1 A simplified schematic diagram of the internal structure of the body of a lawn mower. DETAILED DESCRIPTION

[0031] The following is an exemplary description of the embodiments of the present disclosure in conjunction with the accompanying drawings. It should be understood that the present disclosure can be implemented in a variety of ways and should not be construed as being limited to the embodiments described herein, which are only for a more thorough and clear understanding of the present disclosure.

[0032] The emergence of lawn mowers saves labor time and reduces the labor intensity of gardening operations. However, the heat-generating parts of the lawn mower, such as batteries, controllers, and motors, need to be promptly and effectively dissipated, otherwise the safety and reliability of the lawn mower will be adversely affected. In view of this, the present disclosure provides a lawn mower 100. Compared with traditional lawn mowers, the lawn mower 100 provided by the present disclosure can dissipate heat from the heat-generating parts relatively more effectively and promptly, thereby having better performance in terms of safety and reliability.

[0033] For ease of understanding, the overall structure of the lawn mower 100 is first described below by way of example. It should be understood that the overall structure of the lawn mower 100 is not limited to the following description. For example, one or more of the elements described below may be omitted or replaced, and the layout relationship between them may be replaced.

[0034] like Figure 1 and Figure 2 As shown, the lawn mower 100 may include a body 10, an armrest 20, and a running mechanism 30. The body 10 accommodates some functional parts of the lawn mower 100, which will be introduced below and will not be described here. The armrest 20 may extend backward and upward from the body 10. The operator may hold the armrest 20 to control the direction of travel of the lawn mower 100. The running mechanism 30 is installed on the body 10, and the lawn mower 100 moves on the ground through the running mechanism 30. For example, the running mechanism 30 may be a running wheel 30.

[0035] Combination Figure 3 and Figure 4, the lawn mower 100 may further include a cutting tool 40 and a storage container 50. The cutting tool 40 may be located at the bottom of the body 10. As the lawn mower 100 moves on the ground, the cutting tool 40 is driven to rotate rapidly to cut the vegetation in the passing area. As an example, the cutting tool 40 may be a cutter disc. The storage container 50 may be located at the rear of the body 10 and approximately below the armrest 20. During the operation of the lawn mower 100, the cut vegetation may be stored in the storage container 50. For example, when the lawn mower 100 is in a mowing operation, the cut vegetation may be pushed into the storage container 50 by wind power or the movement of the cutting tool 40.

[0036] Return to Figure 2 , the structure of the fuselage 10 is described by way of example, but the structure of the fuselage 10 is not limited to the following content. Figure 2 As shown, the fuselage 10 may include a shell 11 and a base 12, and the shell 11 may be detachably mounted on the base 12. For example, the armrest 20 and the walking mechanism 30 may be mounted on the base 12. It should be noted that in other examples of the present disclosure, the fuselage 10 may also have other structures. For example, in some examples, the fuselage 10 may be formed in one piece. For another example, the fuselage 10 may be composed of more independent parts.

[0037] Next, the functional parts in the body 10 are described with examples. Figure 2 , these functional parts may include a battery 61, a controller 62 and a motor 63. The controller 62 may control the operation of the motor 63, for example, control the start and stop of the motor 63, control the speed of the motor 63, etc. The output end of the motor 63 is transmission-connected to the cutting tool 40 to drive the cutting tool 40 to rotate. The battery 61 may be used to supply electrical energy to the motor 63.

[0038] refer to Figure 3 The body 10 may also be provided with an air inlet, an air outlet and an air duct. The air duct extends inside the body 10, one end of the air duct is connected to the outside through the air inlet, and the other end of the air duct is connected to the outside through the air outlet. The battery 61, the controller 62 and the motor 63 may all be arranged in the air duct, so that the airflow generated by the cooling fan 631 of the motor 63 flows along the air duct to take away the heat of the battery 61, the controller 62 and the motor 63.

[0039] In order to facilitate the understanding of the following content, a simplified diagram showing the internal structure of the fuselage 10 is provided, namely Figure 4 . Figure 4 At least part of the airflow in the air duct is shown by arrows. Figure 3 and Figure 4The body 10 may be provided with an air inlet chamber 13 and a battery chamber 14. The air inlet chamber 13 may be connected to the outside through an air inlet. The battery chamber 14 may be located above the air inlet chamber 13. A first connecting hole 15 is provided on the wall separating the air inlet chamber 13 and the battery chamber 14, and the air duct extends through the air inlet chamber 13, the first connecting hole 15 and the battery chamber 14 in sequence.

[0040] According to the lawn mower 100 provided by the present disclosure, the airflow will first be introduced into the air inlet chamber 13 below the battery chamber 14, and then enter the battery chamber 14 from bottom to top through the first connecting hole 15 on the wall between the air inlet chamber 13 and the battery chamber 14, thereby taking away the heat of the battery 61. Due to the existence of the air inlet chamber 13, the space below the battery chamber 14 is relatively open, which makes the wall size between the air inlet chamber 13 and the battery chamber 14 larger. Furthermore, the larger-sized wall allows a larger-area first connecting hole 15 to be opened thereon, and the larger-area first connecting hole 15 is conducive to reducing flow resistance and increasing flow, which is conducive to more timely and effective heat dissipation of the battery 61. Combined with Figure 3 and Figure 4 The lawn mower 100 may further include an air guide 80 housed in the body 10 and located on one side of the battery cavity 14. The air guide 80 may be open toward the side where the battery cavity 14 is located and open downward. A second communication hole 16 may be provided on the side wall of the battery cavity 14 facing the air guide 80, and the air duct may extend through the battery cavity 14, the second communication hole 16, and the interior of the air guide 80 in sequence.

[0041] Since the air guide cover 80 is open toward the side where the battery cavity 14 is located and the side wall of the battery cavity 14 facing the air guide cover 80 is provided with a second connecting hole 16, the airflow will flow from the battery cavity 14 to the air guide cover 80 through the second connecting hole 16 to take away the heat of the battery 61. In addition, since the air guide cover 80 is open toward the side where the battery cavity 14 is located and is open downward, the airflow entering the air guide cover 80 will be guided by the air guide cover 80, and will change from a lateral flow to a longitudinal downward flow, and then flow through the controller 62 and the motor 63, taking away the heat of the controller 62 and the motor 63. In addition, the heat dissipation airflow can enter the battery cavity 14 from the bottom of the battery cavity 14 and flow out of the battery cavity 14 from one side of the battery cavity 14. In this process, the airflow is able to contact a larger proportion of the outer surface of the battery 61, taking away more heat from the battery 61.

[0042] Continue to refer Figure 3 and Figure 4 , the controller 62 can be at least partially housed in the air guide cover 80. In this way, in the process of flowing through the air guide cover 80, the airflow can effectively take away the heat of the controller 62 and its surroundings, and the controller 62 is promptly and effectively cooled.

[0043] Continue to refer Figure 3 and Figure 4 , the motor 63 can be located below the air guide cover 80. Since the motor 63 is located below the air guide cover 80, and the air guide cover 80 can guide the airflow from the battery cavity 14 to flow downward, the airflow leaving the air guide cover 80 will flow to the motor 63, thereby taking away the heat of the motor 63 and its surroundings, effectively and timely dissipating the heat of the motor 63, and ensuring the safety and stability of the motor 63.

[0044] Continue to refer Figure 3 and Figure 4 As an example, the cooling fan 631 of the motor 63 is disposed at the upper end of the motor 63. The cooling fan 631 of the motor 63 is located at the upper end of the motor 63, that is, located in the cooling air duct. When the cooling fan 631 is working, it will push and accelerate the surrounding air to form an airflow flowing along the air duct. When the airflow flows through the battery 61, the controller 62 and the motor 63, it will take away their heat and dissipate the heat.

[0045] There are many ways to implement the air inlet, and the present disclosure does not specifically limit the structure of the air inlet. Figure 1 and Figure 2 The air inlet may be at least partially formed by the gap between the base 12 and the shell 11. Since the air inlet is at least partially formed by the gap between the base 12 and the shell 11, there is no need or less need to open an additional hole on the fuselage 10 as an air inlet, which is conducive to reducing the complexity of the structure of the fuselage 10 and improving the strength of the fuselage 10.

[0046] There are many ways to implement the air outlet, and the present disclosure does not specifically limit the structure of the air outlet. Figure 3 and Figure 4 , the bottom of the fuselage 10 may be provided with a protruding hole 121, the output end 632 of the motor 63 may protrude through the protruding hole 121 to be transmission-connected with the cutting tool 40, and the air outlet is at least partially defined by the protruding hole 121. As a specific example, the output end 632 of the motor 63 may include an output shaft 632a and a connecting portion 632b, the output shaft 632a is transmission-connected with the connecting portion 632b, and the connecting portion 632b is transmission-connected with the cutting tool 40, and the air outlet is at least partially formed by the gap G2 between the connecting portion 632b and the protruding hole 121. In this implementation, the air outlet of the air duct is at least partially defined by the protruding hole 121, and in particular, is at least partially formed by the gap between the connecting portion 632b and the protruding hole 121. In this way, there is no need or less need to open an additional hole on the fuselage 10 as an air outlet, which is conducive to reducing the complexity of the structure of the fuselage 10 and improving the strength of the fuselage 10.

[0047] There are many ways to implement the battery cavity 14, and the present disclosure does not specifically limit this. As an example, the lawn mower 100 may include a battery holder 70, which is detachably mounted in the body 10, and the battery cavity 14 may be at least partially defined by the battery holder 70. In this implementation, the battery cavity 14 is defined by the battery holder 70 detachably mounted on the body 10, rather than by a structure integrally formed with the body 10, which helps to reduce the complexity of the structure of the body 10, thereby reducing the difficulty of manufacturing the body 10.

[0048] refer to Figure 2 A battery inlet and outlet is provided at the top of the body 10, and the battery 61 can be loaded into or removed from the battery cavity 14 through the battery inlet and outlet. The lawn mower 100 also includes a cover 111, and the cover 111 can be switched between a position of opening the battery inlet and outlet and a position of closing the battery inlet and outlet. As an example, the cover 111 can be pivotally supported on the housing 11 so as to switch between an open position and a closed position by pivoting when being operated. Under normal circumstances, the cover 111 can cover the battery inlet and outlet to prevent the battery 61 from being exposed to the outside, which is beneficial to protecting the battery 61 and improving the aesthetics of the lawn mower 100. When the battery 61 needs to be observed or maintained, it is only necessary to switch the position of the cover 111 to perform the required operation more conveniently, so this implementation method helps to improve the convenience of maintenance of the battery 61.

[0049] It is understood that in the present disclosure, directional descriptions such as "upper", "lower", "inner", "outer", etc. are relative rather than absolute. When the lawn mower provided by the present disclosure is placed in the posture and position shown in the accompanying drawings, these directional words may be applicable.

[0050] It should be understood that although the terms "first" or "second" etc. may be used in the present disclosure to describe various elements (such as the first connecting hole and the second connecting hole), these elements are not defined by these terms, and these terms are only used to distinguish one element from another.

[0051] The basic principles of the present disclosure are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present disclosure are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present disclosure. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, and are not limitations. The above details do not limit the present disclosure to the necessity of adopting the above specific details to be implemented.

[0052] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present disclosure to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

[0053] The components and devices involved in this disclosure are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the drawings. As those skilled in the art will recognize, these components and devices can be connected, arranged, and configured in any manner.

[0054] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A lawn mower, comprising a body and a battery, a controller and a motor stored in the body, the body being provided with an air inlet, an air outlet and an air duct from the air inlet to the air outlet, the battery, the controller and the motor being arranged in the air duct, so that the airflow generated by the cooling fan of the motor flows along the air duct to take away the heat of the battery, the controller and the motor, characterized in that: An air inlet chamber and a battery chamber are provided in the fuselage, the air inlet chamber is connected with the outside through the air inlet, the battery chamber is located above the air inlet chamber, a first connecting hole is provided on the wall separating the air inlet chamber and the battery chamber, and the air duct extends through the air inlet chamber, the first connecting hole and the battery chamber in sequence.

2. The lawn mower according to claim 1, characterized in that It also includes an air guide cover housed in the fuselage and located on one side of the battery cavity, the air guide cover is open toward the side where the battery cavity is located and open downward, a second connecting hole is provided on the side wall of the battery cavity facing the air guide cover, and the air duct extends through the battery cavity, the second connecting hole and the interior of the air guide cover in sequence.

3. The lawn mower according to claim 2, characterized in that The controller is at least partially housed in the air guide cover.

4. The lawn mower according to claim 2, characterized in that The motor is located below the air guide cover.

5. The lawn mower according to claim 4, characterized in that The cooling fan of the motor is arranged at the upper end of the motor.

6. The lawn mower according to any one of claims 1 to 5, characterized in that: The fuselage comprises a base and a shell mounted on the base, and the air inlet is at least partially formed by a gap between the base and the shell.

7. The lawn mower according to any one of claims 1 to 5, characterized in that: It also includes a cutting tool located below the fuselage. A protruding hole is provided at the bottom of the fuselage. The output end of the motor protrudes through the protruding hole to be transmission-connected with the cutting tool. The air outlet is at least partially defined by the protruding hole.

8. The lawn mower according to claim 7, characterized in that The output end comprises a connecting portion, the cutting tool is drivingly connected to the connecting portion, and the air outlet is at least partially formed by a gap between the connecting portion and the extension hole.

9. The lawn mower according to any one of claims 1 to 5, characterized in that: Also included is a battery holder detachably mounted in the body, wherein the battery cavity is at least partially defined by the battery holder.

10. The lawn mower according to any one of claims 1 to 5, characterized in that A battery inlet and outlet is provided at the top of the body, and the battery can be loaded into or removed from the battery cavity through the battery inlet and outlet. The lawn mower also includes a cover plate, and the cover plate can be switched between a position of opening the battery inlet and outlet and a position of closing the battery inlet and outlet.

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