Lawn mower

Abstract

The utility model discloses a mower. The mowing machine comprises a machine body, a mowing blade and a mowing blade, the fan is arranged at the bottom of the machine body. And the blade assembly is arranged at the bottom of the machine body. The motor is mounted on the machine body; the motor drives the fan and the blade assembly to rotate. The cover body is connected with the machine body and covers the motor; an air inlet is formed in the cover body, an opening of the air inlet faces downwards, and a first airflow channel communicating with the air inlet is formed in the cover body; the motor is provided with an air outlet and a second airflow channel communicated with the air outlet and the first airflow channel. The motor drives the fan to rotate, so that airflow enters the first airflow channel and the second airflow channel from the air inlet and flows out from the air outlet; the air outlet direction of the air outlet is parallel to the air inlet direction of the air inlet. Compared with the prior art, the heat dissipation efficiency is improved, and the heat dissipation process is safer and more reliable.

Description

Technical Field

[0001] The utility model relates to the field of garden tools, in particular to a lawn mower. Background Art

[0002] Lawn mowers are common gardening tools. With the continuous development of science and technology, highly intelligent automatic lawn mowers are becoming more and more common. As a gardening tool, lawn mowers can be used by users to remove weeds, mow lawns, etc.

[0003] The existing lawn mower has a motor that drives the cutter to rotate, as well as electrical components such as a controller. These components need to dissipate heat during operation. However, the existing heat dissipation structure is relatively complex, and foreign matter such as wood chips and raindrops can easily enter the electrical components through the air inlet, which affects the heat dissipation effect on the one hand and the machine performance on the other. Utility Model Content

[0004] The utility model aims to provide a lawn mower, which can improve the heat dissipation efficiency and make the heat dissipation process safer and more reliable.

[0005] In order to solve the above technical problems, the embodiment of the utility model provides a lawn mower, comprising:

[0006] body;

[0007] A fan, wherein the fan is arranged at the bottom of the fuselage;

[0008] A blade assembly, wherein the blade assembly is arranged at the bottom of the fuselage;

[0009] A motor is mounted on the body; the motor drives the fan and the blade assembly to rotate;

[0010] A cover body, the cover body is connected to the fuselage and covers the motor; an air inlet is opened on the cover body, and the opening of the air inlet faces downward, and the cover body has a first air flow channel connected to the air inlet; the motor has an air outlet and a second air flow channel connected to the air outlet and the first air flow channel;

[0011] The motor drives the fan to rotate so that the airflow enters the first airflow channel and the second airflow channel from the air inlet and flows out from the air outlet; wherein the air outlet direction of the air outlet is parallel to the air inlet direction of the air inlet.

[0012] Compared with the prior art, the embodiment of the utility model sets a first airflow channel and a second airflow channel, and the airflow is allowed to flow in the cover body and then pass through the motor through the rotation of the fan, thereby achieving internal heat dissipation of the lawn mower. And by setting the opening of the air inlet downward, raindrops and the like are prevented from entering the interior of the cover body through the air inlet. In addition, when foreign matter such as wood chips is sucked into the air inlet position, it will fall due to gravity and will not be adsorbed on the air inlet. The overall heat dissipation structure is simple, and the heat dissipation efficiency can be improved, which effectively reduces the volume of the whole machine, improves the space utilization rate, and is simple to operate, making the heat dissipation process safer and more reliable.

[0013] In one embodiment, the air outlet opens downward, and the air outlet direction is opposite to the air inlet direction.

[0014] In one embodiment, the cover body includes an upper cover and a lower cover, the air inlet is opened on the lower cover, and the upper part of the air inlet is covered by the upper cover.

[0015] In one embodiment, a wind collecting cover covering the motor is disposed in the lower cover, and an air outlet is provided on the wind collecting cover, and the air outlet is connected to the first air flow channel and the second air flow channel.

[0016] In one embodiment, the lawn mower further includes: a controller electrically connected to the motor, wherein the controller is disposed in the lower cover and located above the wind collecting hood; the airflow in the first airflow channel flows through the controller and enters the air outlet.

[0017] In one embodiment, a vibration damping member is provided on a side of the upper cover facing away from the lower cover;

[0018] The lawn mower comprises a power supply device clamped on the upper cover, and the vibration damping member is located between the power supply device and the upper cover.

[0019] In one embodiment, a dustproof net is provided in the cover body, and the dustproof net valve covers the top of the air inlet.

[0020] In one embodiment, the cover body has a first mounting portion and a second mounting portion on both sides along the width direction of the fuselage; the first mounting portion includes a locking key insertion portion, and the second mounting portion includes: an electrical connection interface; the air inlet is located between the first mounting portion and the second mounting portion.

[0021] In one embodiment, the cover body extends toward the rear of the lawn mower to form an extension portion, and the extension portion is located above the body;

[0022] The first mounting portion, the second mounting portion, and the air inlet are all located on the extension portion.

[0023] In one embodiment, the air outlet is opened at the bottom of the motor, and the motor comprises: a cover shell and a coil bracket; the top of the cover shell has a hollow area for airflow to enter the motor;

[0024] The coil support has a plurality of radially extending branch portions, the plurality of branch portions are circumferentially spaced around the main shaft of the motor, and two adjacent branch portions are spaced apart to form the second airflow channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a lawn mower according to an embodiment of the utility model;

[0026] Figure 2 It is a structural schematic diagram of a power-free device on a lawn mower according to one embodiment of the utility model;

[0027] Figure 3 is a cross-sectional view of a lawn mower according to an embodiment of the utility model;

[0028] Figure 4 yes Figure 3 A partial enlarged view of middle A;

[0029] Figure 5 This is a schematic diagram of the structure inside the cover body according to one embodiment of the utility model;

[0030] Figure 6 It is a structural schematic diagram of a motor connected to a fan according to an embodiment of the utility model;

[0031] Figure 7 yes Figure 6 Top view of the . DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the utility model clearer, the various embodiments of the utility model will be described in detail below with reference to the accompanying drawings. However, it can be understood by those skilled in the art that in the various embodiments of the utility model, many technical details are provided in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical schemes claimed for protection in the claims of the present application can be implemented.

[0033] Unless the context requires otherwise, throughout the specification and claims, the word "comprise" and variations such as "include" and "have" should be construed in an open, inclusive sense, ie, should be interpreted as "including, but not limited to."

[0034] The following will be combined with the accompanying drawings to describe the various embodiments of the present invention in detail, so as to more clearly understand the purpose, characteristics and advantages of the present invention. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0035] References throughout the specification to "one embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0036] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and / or" unless the context clearly dictates otherwise.

[0037] In the following description, in order to clearly demonstrate the structure and working mode of the utility model, many directional words will be used for description, but the words "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as restrictive terms.

[0038] Embodiments of the present invention are described below with reference to the accompanying drawings.

[0039] This example relates to a lawn mower 100. Figure 1 , Figure 3 and Figure 4 As shown, the lawn mower 100 includes: a body 1, a fan 2, a blade assembly 3 and a motor 4. The motor 4 is mounted on the body 1, and the fan 2 and the blade assembly 3 are arranged on a chassis at the bottom of the body 1, and the blade assembly 3 is located on the side of the fan 2 away from the body 1. The blade assembly 3 is fixedly connected to the rotating shaft of the fan 2 and the motor 4 through a locking member, and the locking member can be a bolt or other conventional mechanical fixing member. A controller 90 is arranged on the body 1, and the controller 90 controls the motor 4 to rotate the fan 2 and the blade assembly 3. The blade assembly 3 can be formed by two blades overlapping and fixed. The lawn mower 100 also includes an operating rod 5 and a self-propelled mechanism, and the self-propelled mechanism includes a running wheel and a driving motor for driving the running wheel to move. A speed knob is arranged on the operating rod 5, and a signal is sent to the controller 90 through the speed knob. The controller 90 includes a PCB control board, so that the controller 90 controls the driving motor to make the running wheel move. When the lawn mower 100 is working, the operator can hold the handle on the operating rod 5 and push the lawn mower 100 to walk.

[0040] like Figure 3 , Figure 4 As shown, the lawn mower 100 further includes: a cover body 6, which is connected to the body 1 and covers the motor 4. An air inlet 60 is provided on the cover body 6, and the opening of the air inlet 60 faces downward, and the cover body 6 has a first air flow channel 63 connected to the air inlet 60. The motor 4 has an air outlet 40 and a second air flow channel 41 connected to the air outlet 40 and the first air flow channel 63. The motor 4 drives the fan 2 to rotate so that the air flow enters the first air flow channel 63 and the second air flow channel 41 from the air inlet 60 and flows out from the air outlet 40. Among them, the air outlet direction of the air outlet 40 is parallel to the air inlet direction of the air inlet 60.

[0041] It is not difficult to find from the above content that the first airflow channel 63 and the second airflow channel 41 are set, and the airflow is allowed to flow in the cover body 6 and then pass through the motor 4 through the rotation of the fan 2, so as to achieve the internal heat dissipation of the lawn mower 100. And by setting the opening of the air inlet 60 downward, raindrops and the like are prevented from entering the inside of the cover body 6 through the air inlet 60. In addition, when foreign matter such as wood chips is sucked into the air inlet 60, it will fall due to gravity and will not be adsorbed on the air inlet 60. The overall heat dissipation structure is simple, and the heat dissipation efficiency can be improved, the volume of the whole machine can be effectively reduced, the space utilization rate can be improved, and the operation is simple, making the heat dissipation process safer and more reliable.

[0042] The implementation details of this embodiment are described in detail below. The following content is only provided for easy understanding of the implementation details and is not necessary for implementing this solution.

[0043] Furthermore, if Figure 3 , Figure 4 As shown, the opening of the air outlet 40 faces downward, and the air outlet direction is opposite to the air inlet direction. Figure 4 The arrow B in the middle indicates the direction of air flow.

[0044] Furthermore, if Figure 2 , Figure 3 and Figure 4 As shown, the cover body 6 includes an upper cover 61 and a lower cover 62 , the air inlet 60 is opened on the lower cover 62 , and the upper part of the air inlet 60 is covered by the upper cover 61 .

[0045] Furthermore, if Figure 2 , Figure 3 and Figure 4 As shown, a wind collecting cover 7 for covering the motor 4 is disposed in the lower cover 62 , and an air outlet 71 is provided on the wind collecting cover 7 , and the air outlet 71 is connected to the first air flow channel 63 and the second air flow channel 41 .

[0046] In addition, if Figure 3 , Figure 4 and Figure 5As shown, the lawn mower 100 further includes: a controller 90 electrically connected to the motor 4, the controller 90 is arranged in the lower cover 62 and is located above the wind collecting cover 7. The airflow in the first airflow channel 63 flows through the controller 90 and enters the air outlet 71. The wind collecting cover 7 is arranged outside the motor 4, and collects the airflow entering the inside of the cover body 6 and blows it out from the air outlet 71.

[0047] Furthermore, if Figure 3 , Figure 4 and Figure 5 As shown, a dustproof net 8 is provided inside the cover body 6, and the dustproof net 8 valve covers the top of the air inlet 60. A dustproof net 8 is also provided at the air inlet 60 to prevent dust, wood chips, etc. from further entering the interior of the cover body 6.

[0048] In addition, if Figure 2 As shown, the cover body 6 has a first mounting portion 64 and a second mounting portion 65 on both sides along the width direction of the fuselage 1. The first mounting portion 64 includes a locking key insertion portion. The second mounting portion 65 includes: an electrical connection interface for electrical connection between the power supply device 9 and the motor 4. The air inlet 60 is located between the first mounting portion 64 and the second mounting portion 65. The air inlet 60 is arranged between the first mounting portion 64 and the second mounting portion 65, which not only increases the compactness of the structure, but also helps to increase the air intake area.

[0049] Furthermore, if Figure 2 and Figure 4 As shown, the cover 6 extends toward the rear of the lawn mower 100 to form an extension portion 66, and the extension portion 66 is located above the body 1. The first mounting portion 64, the second mounting portion 65, and the air inlet 60 are all located on the extension portion, and the air inlet 60 is separated from the top of the body 1 to facilitate airflow entry.

[0050] In addition, if Figure 4 As shown, the air outlet 40 is opened at the bottom of the motor 4. The motor 4 drives the fan 2 to rotate, and the air flows out from the air outlet 40 and flows out from the interval between the fan 2 and the motor 4. Figure 6 and Figure 7 As shown, the motor 4 includes: a cover 42 and a coil support 43. The top of the cover 42 has a hollow area for airflow to enter the motor 4. The coil support 43 has a plurality of radially extending branches, which are arranged circumferentially around the main shaft of the motor 4, and two adjacent branches are spaced apart to form a second airflow channel 41. There are other gaps in the motor 4 for airflow to pass through, and the plurality of gaps can also form the second airflow channel 41.

[0051] Furthermore, if Figure 2As shown, a vibration damping member 67 is provided on the side of the upper cover 61 facing away from the lower cover 62. The lawn mower 100 includes: a power supply device 9 clamped on the upper cover 61, and the power supply device 9 has a battery to supply power to the motor 4 and the controller 90. The vibration damping member 67 is located between the power supply device 9 and the upper cover 61. The upper cover 61 is provided with a clamping portion, and the power supply device 9 is installed on the upper cover 61 through the clamping portion. The vibration damping member 67 is preferably a rubber pad, which is used to reduce vibration and prevent the power supply device 9 from being affected.

[0052] Preferred embodiments of the present invention have been described in detail above, but it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide further embodiments.

[0053] These and other changes can be made to the embodiments in light of the above detailed description.In general, in the claims, the terms used should not be considered limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which these claims are entitled.

[0054] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A lawn mower, characterized in that: include: body; A fan, wherein the fan is arranged at the bottom of the fuselage; A blade assembly, wherein the blade assembly is arranged at the bottom of the body; A motor, wherein the motor is mounted on the fuselage; The motor drives the fan and the blade assembly to rotate; A cover body, the cover body is connected to the fuselage and covers the motor; an air inlet is opened on the cover body, and the opening of the air inlet faces downward, and the cover body has a first air flow channel connected to the air inlet; the motor has an air outlet and a second air flow channel connected to the air outlet and the first air flow channel; The motor drives the fan to rotate so that the airflow enters the first airflow channel and the second airflow channel from the air inlet and flows out from the air outlet; wherein the air outlet direction of the air outlet is parallel to the air inlet direction of the air inlet.

2. The lawn mower according to claim 1, characterized in that The air outlet is opened downward, and the air outlet direction is opposite to the air inlet direction.

3. The lawn mower according to claim 2, characterized in that The cover body comprises an upper cover and a lower cover, the air inlet is opened on the lower cover, and the upper part of the air inlet is covered by the upper cover.

4. The lawn mower according to claim 3, characterized in that The lower cover is provided with an air collecting cover for covering the motor, and the air collecting cover is provided with an air outlet, and the air outlet is connected with the first air flow channel and the second air flow channel.

5. The lawn mower according to claim 4, characterized in that The lawn mower further comprises: a controller electrically connected to the motor, wherein the controller is arranged in the lower cover and located above the wind collecting cover; the airflow in the first airflow channel flows through the controller and enters the air outlet.

6. The lawn mower according to claim 3, characterized in that: A vibration damping member is provided on a side of the upper cover facing away from the lower cover; The lawn mower comprises a power supply device clamped on the upper cover, and the vibration damping member is located between the power supply device and the upper cover.

7. The lawn mower according to claim 1, characterized in that A dustproof net is arranged in the cover body, and the dustproof net valve covers the upper part of the air inlet.

8. The lawn mower according to claim 1, characterized in that The cover body has a first mounting portion and a second mounting portion on both sides along the width direction of the fuselage; the first mounting portion includes a locking key insertion portion, and the second mounting portion includes: an electrical connection interface; the air inlet is located between the first mounting portion and the second mounting portion.

9. The lawn mower according to claim 8, characterized in that The cover body extends toward the rear of the lawn mower to form an extension portion, and the extension portion is located above the body; The first mounting portion, the second mounting portion, and the air inlet are all located on the extension portion.

10. The lawn mower according to claim 1, characterized in that The air outlet is opened at the bottom of the motor, and the motor comprises: a cover shell and a coil support; the top of the cover shell has a hollow area for airflow to enter the motor; The coil support has a plurality of radially extending branch portions, the plurality of branch portions are circumferentially spaced around the main shaft of the motor, and two adjacent branch portions are spaced apart to form the second airflow channel.

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