Housing structure and lawn mower

Abstract

A housing structure of a mower and the mower, the housing structure comprising: a bottom plate and a middle frame, the middle frame enclosing a containing cavity, the middle frame comprising a first top plate and a first side plate connected together, one end of the first side plate being connected to the bottom plate, the bottom plate closing the containing cavity, the first top plate being connected to the end of the first side plate away from the bottom plate, and the first top plate protruding away from the end face of the first side plate away from the bottom plate, the first top plate being in a structure of high in the middle and low at four sides; the first top plate and the first side plate can increase the cross-sectional size of the housing structure from top to bottom, thereby increasing the height and area on the cross section of the housing structure, effectively increasing the cross-sectional moment of inertia of the housing structure, and effectively reducing the deformation of the housing structure, and improving the strength of the housing structure.

Description

Technical Field

[0001] This application relates to the field of outdoor lawn mowing tools, specifically to a housing structure and a lawnmower. Background Technology

[0002] With the development of technology, lawnmowers have become key tools for reducing labor input and increasing labor efficiency. Lawnmowers use high-speed rotating blades to cut grass and complete large-area mowing tasks by manual pushing or automatic movement. However, during operation, due to complex environmental factors, automatic lawnmowers are often subjected to external impacts, such as stones, or are at risk of tipping over on uneven grass, leading to deformation and damage to the lawnmower's outer shell, which can easily damage the internal motor. Therefore, how to improve the deformation resistance and strength of the lawnmower's outer shell structure through design has become a crucial issue. Summary of the Invention

[0003] The purpose of this application is to provide a housing structure and a lawnmower, wherein the housing structure is robust and has excellent resistance to deformation and strength.

[0004] To achieve the objectives of this application, the following technical solution is provided:

[0005] In a first aspect, this application provides a shell structure for a lawnmower, comprising: a base plate and a middle frame, the middle frame enclosing a receiving cavity, the middle frame including a first top plate and a first side plate connected to each other, one end of the first side plate being connected to the base plate, the base plate enclosing the receiving cavity, the first top plate being connected to the end of the first side plate away from the base plate, and the first top plate protruding relative to the end face of the first side plate away from the base plate, the first top plate having a structure that is high in the middle and low around the edges.

[0006] In one embodiment, the first top plate includes a support portion, a buffer portion, and a reinforcing portion connected in sequence. The support portion and the reinforcing portion protrude relative to the surface where the buffer portion is located, and the height of the protrusion of the reinforcing portion is greater than the height of the protrusion of the support portion.

[0007] In one embodiment, the first side panel includes a baffle portion, which is sleeved on the outer periphery of the first side panel and encloses two opposing handle slots located on both sides of the lawnmower in the left-right direction.

[0008] In one embodiment, the first side panel further includes a connecting portion, and the enclosure portion includes a first wall panel and a second wall panel connected at an angle. The connecting portion is located on the outer periphery of the first side panel and extends toward the enclosure portion to connect to the second wall panel. The end faces of the first wall panel and the first side panel have an angle.

[0009] In one embodiment, the side panel further includes a third wall panel and a fourth wall panel connected at an angle, the first wall panel, the third wall panel, the fourth wall panel and the second wall panel being connected in sequence, and the handle groove having an "L" shaped cross-section.

[0010] In one embodiment, the outer shell structure further includes a baffle plate, which is rotatably connected to the enclosure portion and closes the handle groove.

[0011] In one embodiment, the base plate includes a second top plate and a second side plate connected together, the first side plate being connected to the second top plate, and the second top plate protruding relative to the end face of the second side plate.

[0012] In one embodiment, the base plate further includes a fixing part that is angled to the second side plate, the fixing part being located on the outer periphery of the second side plate, and the enclosure part being connected to the fixing part.

[0013] In one embodiment, the outer shell structure further includes a top cover connected to the middle frame, and the top cover is a dome structure.

[0014] Secondly, this application also provides a lawnmower, which includes a blade disc, a drive circuit, and a housing structure as described in any one of the first aspects. The blade disc is mounted on the housing structure, the drive circuit is mounted inside the housing structure, and the blade disc and the drive circuit are electrically connected.

[0015] This application designs a base plate and a middle frame on the outer shell structure of a lawnmower. The cavity enclosed by the middle frame and base plate can accommodate other mowing components, and the outer shell structure enhances the protection of these components. Furthermore, by designing a first top plate that protrudes from the end face of the first side plate away from the base plate, and having a structure that is higher in the middle and lower around the edges, the middle frame can form a dome structure. The first top plate and first side plate thus increase the cross-sectional dimensions of the outer shell structure from top to bottom, thereby increasing the height and area of ​​the outer shell structure cross-section. This effectively increases the moment of inertia of the outer shell structure, thereby effectively reducing deformation and improving the strength of the outer shell structure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the external structure of a lawnmower in one embodiment;

[0018] Figure 2 This is a schematic diagram of the external structure of the middle frame in one implementation method;

[0019] Figure 3 This is a schematic diagram of the external structure of the base plate in one implementation method;

[0020] Figure 4 This is a cross-sectional schematic diagram of one embodiment of a lawnmower;

[0021] Figure 5 This is a schematic diagram of the structure of the protrusion in the middle frame of one embodiment;

[0022] Figure 6 This is a schematic diagram of the handle groove in one embodiment;

[0023] Figure 7 This is a structural schematic diagram of the handle groove and baffle in one embodiment;

[0024] Figure 8 This is a schematic diagram of the structure of the top cover in one implementation method.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1- Lawn mower, 10- Outer shell structure, 20- Blade disc, 30- Drive circuit, 11- Base plate, 111- Second top plate, 112- Second side plate, 113- Fixing part, 1131- Reinforcing rib, 114- Storage cavity, 12- Middle frame, 121- Receiving cavity, 122- First top plate, 123- First side plate, 122A- Protrusion, 1221- Support part, 1222- Buffer part, 1223- Reinforcing part, 124- Enclosure part, 124A- Connecting part, 125- Handle groove, 1251- First wall panel, 1252- Second wall panel, 1252A- First bent end, 1252B- Second bent end, 1253- Third wall panel, 1254- Fourth wall panel, 126- Baffle, 13- Top cover. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or it can be in a middle component. When a component is said to be "connected" to another component, it can be directly connected to the other component or it may be in a middle component.

[0029] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application's specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0030] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0031] This application also provides a lawnmower 1, please refer to... Figure 1 , Figure 3 and Figure 4 The lawnmower 1 includes a blade disc 20, a drive circuit 30, and a housing structure 10. The blade disc 20 is mounted on the housing structure 10, and the drive circuit 30 is mounted inside the housing structure 10. The blade disc 20 and the drive circuit 30 are electrically connected.

[0032] In one implementation method, please refer to Figure 1 The outer shell structure 10 includes a bottom plate 11 and a middle frame 12. The middle frame 12 encloses the receiving cavity 121. The middle frame 12 includes a first top plate 122 and a first side plate 123 connected to each other. One end of the first side plate 123 is connected to the bottom plate 11. The bottom plate 11 closes the receiving cavity 121. The top plate is connected to the end of the first side plate 123 away from the bottom plate 11. The first top plate 122 protrudes from the end face of the first side plate 123 away from the bottom plate 11. The first top plate 122 has a structure that is high in the middle and low around the edges.

[0033] Specifically, the base plate 11 can be the chassis of the lawnmower 1. The drive circuit 30 and the blade disc 20 described above are mounted on the base plate 11. The drive circuit 30 is mounted on the side of the base plate 11 facing away from the ground, and the blade disc 20 is mounted on the side facing the ground. The drive circuit 30 and the blade disc 20 are electrically connected, thereby driving the blade disc 20 to rotate and complete the mowing task. The middle frame 12 is connected to the side of the base plate 11 facing away from the ground, and the middle frame 12 and the base plate 11 together enclose the receiving cavity 121, within which the drive circuit 30 is housed. Understandably, the middle frame 12 and the base plate 11 can jointly protect the drive circuit 30, preventing damage to the drive circuit 30, and also ensuring the aesthetics of the lawnmower 1.

[0034] The middle frame 12 and the base plate 11 can be detachable structures, and the specific connection methods include, but are not limited to, snap-fit ​​connection, slot connection, and screw connection. In this embodiment, a connecting slot is provided on the outer peripheral edge of the base plate 11, and a protrusion is provided on the outer peripheral edge of the middle frame 12 to cooperate with it. By inserting the protrusion into the slot, the base plate 11 and the middle frame 12 can be connected. Furthermore, preferably, sealing gaskets can be provided inside and outside the slot to enhance the sealing effect inside the lawnmower 1 and prevent water leakage from causing a short circuit in the drive circuit 30. In addition, a fastener can be provided on the base plate 11, which can be a screw. The middle frame 12 is provided with screw holes that cooperate with the screws. The cooperation between the screws and the screw holes can further protect the middle frame 12 and the base plate 11.

[0035] The middle frame 12 includes a first top plate 122 and a first side plate 123 connected to each other. One end of the first side plate 123 is connected to the bottom plate 11, and the top plate is connected to the end of the first side plate 123 away from the bottom plate 11. The first side plate 123 is a ring-shaped plate with two opposing ends, one end connected to the bottom plate 11 and the other end connected to the first top plate 122. The first side plate 123, the first top plate 122, and the bottom plate 11 together enclose the receiving cavity 121. In one embodiment, the first side plate 123 and the first top plate 122 can be non-removable structures, that is, the first side plate 123 and the first top plate 122 can be an integral seamless structure manufactured by casting, molding, printing, etc., or they can be assembled by welding, gluing, etc. In other embodiments, the first side plate 123 and the first top plate 122 can also be detachable structures, that is, connected by snap-fit ​​or screws.

[0036] In one implementation method, please refer to Figure 2 and Figure 4 The first top plate 122 protrudes from the end face of the first side plate 123 away from the bottom plate 11, and the first top plate 122 has a structure that is higher in the middle and lower around the edges. Specifically, the first top plate 122 can be an upwardly protruding structure, protruding in the direction away from the bottom plate 11, and has a structure that is higher in the middle and lower around the edges. It can be understood that the structure of the first top plate 122 can be considered as a dome structure. When the middle of the first top plate 122 is higher than the edges, the first top plate 122 can have a greater load-bearing capacity. When the top of the lawnmower 1 is impacted, the structure of the first top plate 122 can buffer the impact force and prevent damage to other structures inside the receiving cavity 121.

[0037] In one implementation method, please refer to Figure 5The first top plate 122 may include multiple protrusions 122A. Each protrusion 122A protrudes from the end face of the first side plate 123 away from the bottom plate 11, and has a structure that is higher in the center and lower around the edges. Specifically, the heights of the multiple protrusions 122A can be equal, and the first top plate 122 can have a wave-like structure, meaning that the multiple protrusions 122A together form a wave-like structure. The multiple protrusions 122A can increase the surface area of ​​the first top plate 122. When the first top plate 122 is subjected to pressure or impact, the multiple protrusions 122A can disperse the force, reducing the concentrated pressure on the first top plate 122. Alternatively, the first top plate 122 can also have a non-wave-like structure, where the multiple protrusions 122A can be a matrix of protrusions, thereby increasing the surface area of ​​the first top plate 122.

[0038] This application designs a base plate 11 and a middle frame 12 on the outer shell structure 10 of the lawnmower 1. The cavity 121 enclosed by the middle frame 12 and the base plate 11 can accommodate other mowing components, and the outer shell structure 10 enhances the protection of these components. Furthermore, by designing the first top plate 122 to protrude from the end face of the first side plate 123 away from the base plate 11, and by creating a structure that is high in the middle and low around the edges, the middle frame 12 can form a dome structure. The first top plate 122 and the first side plate 123 thus increase the cross-sectional dimensions of the outer shell structure 10 from top to bottom, thereby increasing the height and area of ​​the cross-section of the outer shell structure 10. This effectively increases the moment of inertia of the cross-section of the outer shell structure 10, thereby effectively reducing the deformation of the outer shell structure 10 and improving its strength.

[0039] In one implementation method, please refer to Figure 4 The first top plate 122 includes a support portion 1221, a buffer portion 1222 and a reinforcing portion 1223 connected in sequence. The support portion 1221 and the reinforcing portion 1223 protrude relative to the surface where the buffer portion 1222 is located, and the height of the protrusion of the reinforcing portion 1223 is greater than the height of the protrusion of the support portion 1221.

[0040] Specifically, one end of the first side plate 123 can be considered as the first end face, and the first top plate 122 protrudes from the first end face to form a dome structure. The first top plate 122 may include a second end face, which is the plane where the buffer portion 1222 is located. The second end face may coincide with or be slightly higher than the first end face. The support portion 1221 may protrude from the second end face, that is, the support portion 1221 should at least partially be higher than the reinforcing portion 1223, and the highest point of the support portion 1221 may be the third end face. The reinforcing portion 1223 may protrude from the second end face, and the maximum height of the reinforcing portion 1223 protruding should be higher than the third end face. Furthermore, the buffer portion 1222 may be located on the outer periphery of the reinforcing portion 1223, and the support portion 1221 may be located on the outer periphery of the buffer portion 1222, so that the first side plate 123 can be symmetrical about the front and rear directions of the lawnmower 1. For example, the cross-sectional shape of the support part 1221, the buffer part 1222, and the reinforcement part 1223 in the left-right direction of the lawnmower 1 can be roughly "mountain" shaped.

[0041] By designing a support portion 1221, a buffer portion 1222, and a reinforcing portion 1223 on the first top plate 122, a secondary dome structure can be formed on the first top plate 122, thereby increasing the cross-sectional dimensions of the first top plate 122 from top to bottom, increasing the moment of inertia of the cross section of the first top plate 122, and further improving the deformation resistance and strength of the first top plate 122.

[0042] In one implementation method, please refer to Figure 2 and Figure 4 The first side plate 123 includes a enclosure part 124, which is sleeved on the outer periphery of the first side plate 123. The enclosure part 124 encloses two opposing handle grooves 125, which are located on both sides of the lawnmower 1 in the left-right direction.

[0043] Specifically, the enclosure 124 is fitted around the outer periphery of the first side plate 123 and connected to the first side plate 123. The enclosure 124 is a ring-shaped plate with two opposing ends, one end of which is engaged with the base plate 11. Understandably, the enclosure 124 is located on the outermost side of the middle frame 12 and is used to protect the lawnmower 1 from the side. Handle slots 125 are located on both sides of the lawnmower 1 in the left-right direction, and the two handle slots 125 can face each other. In this embodiment, the lawnmower 1 includes a front-back direction, a left-right direction, and a top-bottom direction. The front-back direction is the direction in which the lawnmower 1 moves forward and backward; the left-right direction is perpendicular to the front-back direction; and the top-bottom direction is perpendicular to the ground. The user can lift the lawnmower 1 through the handle slots 125, and the facing handle slots 125 also save the user's effort.

[0044] In one embodiment, the depth direction of the handle groove 125 can be parallel to the horizontal direction or at an angle to the horizontal direction. The cross-sectional shape of the handle groove 125 is not specifically limited. The depth direction of the handle groove 125 can be towards the first sidewall. Understandably, the handle groove 125 should be a structure formed by the recess of the enclosure portion 124 into the lawnmower 1, so the depth direction of the handle groove 125 should be the direction in which the enclosure portion 124 is recessed inward.

[0045] In one implementation method, please refer to Figure 4 The first side panel 123 also includes a connecting portion 124A. The enclosure portion 124 includes a first wall panel 1251 and a second wall panel 1252 connected at an angle. The connecting portion 124A is located on the outer periphery of the first side panel 123 and extends toward the enclosure portion 124 to connect to the second wall panel 1252. The first wall panel 1251 and the end face of the first side panel 123 have an angle.

[0046] Specifically, the extension direction of the enclosure portion 124 can be parallel to the extension direction of the first side plate 123, the connecting portion 124A is located between the first side plate 123 and the enclosure portion 124, and the extension direction of the connecting portion 124A can be parallel to the horizontal plane. The connecting portion 124A can be used to connect the first side plate 123 and the enclosure portion 124, and enhance the supporting effect of the first side plate 123 on the enclosure portion 124.

[0047] The extension direction of the first wall panel 1251 can be parallel to the horizontal plane, so that the user's palm can directly contact the first wall panel 1251 after the palm is inserted into the handle groove 125. The first wall panel 1251 can have a large surface area, thereby increasing the contact area between the palm and the first wall panel 1251 and reducing the pressure of the lawnmower 1 on the palm.

[0048] The second wall panel 1252 can be curved, specifically including a first curved end 1252A and a second curved end 1252B connected together. The first curved end 1252A connects to both sides of the first wall panel 1251 and the second curved end 1252B. The first curved end 1252A and the first wall panel 1251 together enclose the handle groove 125, and a portion of the first curved end 1252A can form an angle with the first wall panel 1251, thereby creating a smooth curved surface within the handle groove 125 and improving the comfort of using the handle groove 125. The bending direction of the second curved end 1252B can be opposite to the bending direction of the first curved end 1252A, which facilitates the sliding of debris within the handle groove 125 through the second curved end 1252B, preventing the accumulation of garbage within the handle groove 125.

[0049] The connecting part 124A can be connected to the inner wall of the second wall panel 1252 or to the first wall panel 1251, and there is no specific limitation.

[0050] In one implementation method, please refer to Figure 6 The side panel also includes a third wall panel 1253 and a fourth wall panel 1254 connected at an angle. The first wall panel 1251, the third wall panel 1253, the fourth wall panel 1254, and the second wall panel 1252 are connected sequentially. The cross-sectional shape of the handle groove 125 is "L". Specifically, the third wall panel 1253 can be perpendicular to the fourth wall panel 1254, and the third wall panel 1253 can be parallel to the first bent end 1252A. The opening of the handle groove 125 is formed by the fourth wall panel 1254 and the first wall panel 1251. After the user's palm is inserted into the handle groove 125, the palm can be bent so that it fits against the third wall panel 1253. In this way, the grip when lifting the lawnmower 1 can be increased, allowing the user to lift the lawnmower 1 more easily.

[0051] In one implementation method, please refer to Figure 7 The outer casing structure 10 also includes a baffle 126, which is rotatably connected to the enclosure portion 124 and closes the handle slot 125. Specifically, the baffle 126 can be connected to the enclosure portion 124 via a pivot and a spring. Preferably, the baffle 126 is connected to the end of the handle slot 125 and located near the end of the bottom plate 11. The specific function of the baffle 126 is to close or open the handle slot 125. When the lawnmower 1 is working, it is not necessary to move the lawnmower 1 through the handle slot 125. The baffle 126 can connect to the inner wall of the handle slot 125 to close the handle slot 125, thereby preventing grass clippings from flying into the handle slot 125. When the lawnmower 1 stops working and needs to be moved through the handle slot 125, the user can squeeze the baffle 126 from the outside to make the baffle 126 rotate into the handle slot 125, thereby opening the handle slot 125 and allowing the user to move the lawnmower 1 smoothly through the handle slot 125.

[0052] In one implementation method, please refer to Figure 3 and Figure 4 The base plate 11 includes a second top plate 111 and a second side plate 112 connected to each other. The first side plate 123 is connected to the second top plate 111, and the second top plate 111 protrudes relative to the end face where the second side plate 112 is located.

[0053] Specifically, the base plate 11 includes a second top plate 111 and a second side plate 112 connected to each other. The second side plate 112 is an annular plate with two opposing ends, one end connected to the second top plate 111 and the other end open towards the ground. Thus, the second side plate 112 and the second top plate 111 together enclose the receiving cavity 114. The aforementioned drive circuit 30 and cutter head 20 are mounted on the second top plate 111. The drive circuit 30 is mounted on the side of the second top plate 111 facing away from the ground, and the cutter head 20 is mounted on the side of the second top plate 111 facing the ground. The cutter head 20 is housed within the receiving cavity 114. The second top plate 111 may have holes for the drive circuit 30 to pass through, thereby enabling electrical connection between the cutter head 20 and the drive circuit 30 located on opposite sides.

[0054] In one embodiment, the second side plate 112 and the second top plate 111 can be non-removable structures, that is, the second side plate 112 and the second top plate 111 can be an integral seamless structure manufactured by casting, molding, printing, etc., or they can be assembled by welding, gluing, etc. In other embodiments, the second side plate 112 and the second top plate 111 can also be detachable structures, that is, connected by snap-fit ​​or screws.

[0055] In one implementation method, please refer to Figure 4 The second top plate 111 protrudes from the end face of the second side plate 112 away from the bottom plate 11, and the first top plate 122 has a structure that is higher in the middle and lower around the edges. Specifically, the second top plate 111 can be an upwardly protruding structure, protruding from the end face of the second side plate 112 in a direction close to the first top plate 122, and exhibiting a structure that is higher in the middle and lower around the edges. Understandably, the structure of the second top plate 111 can be considered as a dome structure. When the middle of the second top plate 111 is higher than the edges, the second top plate 111 can have a greater load-bearing capacity. When the receiving cavity 121 holds more items, the load-bearing capacity of the second top plate 111 is even stronger. Furthermore, when the top of the lawnmower 1 is subjected to external force, the combined dome structure of the first top plate 122 and the second top plate 111 can further buffer the impact force, ensuring the stability of the outer shell structure 10.

[0056] In one embodiment, the first side plate 123 can be connected to the second top plate 111. The second top plate 111 has a protruding snap-fit ​​structure, and the first side plate 123 is connected to this snap-fit ​​structure, thereby fixing both the first side plate 123 and the first top plate 122 to the second top plate 111. Preferably, the size of the first side plate 123 can be smaller than the size of the second side plate 112. That is, it can be understood that the dome structure formed by the first top plate 122 and the first side plate 123 is smaller than the dome structure formed by the second top plate 111 and the second side plate 112. The two dome structures can work together to form a frustum-like structure, thereby making the lawnmower 1 structure more stable.

[0057] By designing the second top plate 111 to protrude from the end face of the second side plate 112, the second top plate 111 has a structure that is high in the middle and low around the edges, allowing the bottom plate 11 to also have a dome structure. The second top plate 111 and the second side plate 112 thus increase the cross-sectional dimensions of the bottom plate 11 from top to bottom, thereby increasing the height and area of ​​the bottom plate 11 cross-section. This effectively increases the moment of inertia of the bottom plate 11, thereby effectively reducing the deformation of the bottom plate 11 and improving its strength. Furthermore, the dome structure of the bottom plate 11, in conjunction with the dome structure of the middle frame 12, can further increase the cross-sectional dimensions of the outer shell structure 10, enhancing its resistance to deformation.

[0058] In one implementation method, please refer to Figure 3 The base plate 11 also includes a fixing part 113 that is connected at an angle to the second side plate 112. The fixing part 113 is located on the outer periphery of the second side plate 112, and the enclosure part 124 is connected to the fixing part 113.

[0059] Specifically, the fixing part 113 surrounds the outer periphery of the second side plate 112 and forms an angle with the second side plate 112. This angle can be any angle between 10° and 60°, with no specific limitation. The second side plate 112 can be perpendicular to the horizontal plane, and its two opposing end faces should be parallel to the horizontal plane. The fixing part 113 is connected to the end face of the second side plate facing away from the second top plate 111. Understandably, the perpendicularity of the second side plate 112 to the horizontal plane should be a macroscopic concept, and the angle between the second side plate 112 and the horizontal plane can also be 85° or 95°. The specific tilt angle can be fine-tuned according to the design of the internal cutter head 20. After the fixing part 113 is fixedly connected to the enclosure part 124, the enclosure part 124 can be fitted onto part of the outer periphery of the second side plate 112 to protect the second side plate 112. The specific connection method between the fixing part 113 and the enclosure part 124 can be the snap-fit ​​connection described in the above embodiment. The fixing part 113 is the outermost structure of the base plate 11. By designing the protruding fixing part 113 to be fixedly connected with the enclosure part 124, the impact force received by the side of the lawnmower 1 can be evenly distributed, thereby avoiding direct action on the second side plate 112.

[0060] In one implementation method, please refer to Figure 3 Multiple reinforcing ribs 1131 may be provided between the second side plate 112 and the fixing part 113. The reinforcing ribs 1131 are connected to the outer periphery of the second side plate 112 and the inner periphery of the fixing part 113. The reinforcing ribs 1131 can increase the stability of the fixing part 113 and prevent the fixing part 113 from deforming and breaking under the impact of external force.

[0061] In one implementation method, please refer to Figure 8 The outer shell structure 10 also includes a top cover 13, which is connected to the middle frame 12 and has a dome structure. Specifically, the top cover 13 covers the first side plate 123 and the first top plate 122 and is connected to the enclosure portion 124. The end face of the enclosure portion 124 facing away from the fixing portion 113 may have openings for mounting and snapping or teeth, so that the top cover 13 can be detachably connected to the enclosure portion 124.

[0062] In one embodiment, the upper cover 13 can be a curved dome structure, i.e., a structure that is high in the middle and low around the edges. The inner wall of the upper cover 13 can be fitted to the outer wall of the first top plate 122. Preferably, the inner wall of the upper cover 13 can be fitted to the outer wall of the support portion 1221, thereby strengthening the thickness of the outer shell at the location of the support portion 1221 and increasing the compressive strength of the support portion 1221. Furthermore, there is a gap between the inner wall of the upper cover 13 and the outer wall of the reinforcing portion 1223, so that the middle part of the upper cover 13 has a partially deformable space. When the middle part of the upper cover 13 is subjected to external impact, it can disperse part of the impact force through elastic deformation through the gap, avoiding the impact force being directly transmitted to the reinforcing portion 1223.

[0063] In the description of the embodiments of this application, it should be noted that the orientation or positional relationship of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other indicators are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0064] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art will understand that all or part of the processes for implementing the above embodiments and equivalent variations made in accordance with the claims of this application are still within the scope of this application.

Claims

1. A shell structure for a lawnmower, characterized in that, include: Base plate; The middle frame encloses a cavity for housing the drive circuit of a lawnmower. The middle frame includes a first top plate and a first side plate connected together. One end of the first side plate is connected to the bottom plate, and the bottom plate closes the cavity. The first top plate is connected to the end of the first side plate away from the bottom plate, and the first top plate protrudes relative to the end face of the first side plate away from the bottom plate. The first top plate has a structure that is high in the middle and low around the edges. The middle frame forms a dome structure. The first top plate includes a support portion, a buffer portion, and a reinforcing portion connected in sequence. The support portion and the reinforcing portion protrude relative to the surface where the buffer portion is located, and the height of the protrusion of the reinforcing portion is greater than the height of the protrusion of the support portion. The buffer portion is located on the outer periphery of the reinforcing portion, and the support portion is located on the outer periphery of the buffer portion. The first side plate is symmetrical in the front-rear direction of the lawnmower.

2. The outer shell structure according to claim 1, characterized in that, The first side panel includes a baffle portion, which is fitted around the outer periphery of the first side panel and encloses two opposing handle slots located on both sides of the lawnmower in the left-right direction.

3. The outer shell structure according to claim 2, characterized in that, The first side panel further includes a connecting portion. The enclosure portion includes a first wall panel and a second wall panel connected at an angle. The connecting portion is located on the outer periphery of the first side panel and extends toward the enclosure portion to connect to the second wall panel. The end faces of the first wall panel and the first side panel have an angle.

4. The outer shell structure according to claim 3, characterized in that, The side panel also includes a third wall panel and a fourth wall panel connected at an angle. The first wall panel, the third wall panel, the fourth wall panel and the second wall panel are connected in sequence, and the cross-sectional shape of the handle groove is "L".

5. The outer shell structure according to claim 4, characterized in that, The outer shell structure also includes a baffle, which is rotatably connected to the enclosure and closes the handle groove.

6. The outer shell structure according to claim 2, characterized in that, The base plate includes a second top plate and a second side plate connected together. The first side plate is connected to the second top plate, and the second top plate protrudes relative to the end face of the second side plate.

7. The outer shell structure according to claim 6, characterized in that, The base plate also includes a fixing part that is connected at an angle to the second side plate. The fixing part is located on the outer periphery of the second side plate, and the enclosure part is connected to the fixing part.

8. The outer shell structure according to any one of claims 1-7, characterized in that, The outer shell structure also includes an upper cover, which is connected to the middle frame, and the upper cover is a dome structure.

9. A lawnmower, characterized in that, The lawnmower includes a blade disc, a drive circuit, and a housing structure as described in any one of claims 1-8, wherein the blade disc is mounted on the housing structure, the drive circuit is mounted inside the housing structure, and the blade disc and the drive circuit are electrically connected.

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