Cutting device

Abstract

This application relates to the field of lawn mowing equipment technology, specifically providing a cutting device, including: a main body with at least two mounting parts; a walking mechanism located on the main body for driving the main body to move along a working surface; a main cutting mechanism located on the main body for cutting grass, wherein the distance between the main cutting mechanism and the working surface is less than the distance between the mounting parts and the working surface; and a secondary cutting mechanism including a mounting base and a cutting component. The mounting base is detachably connected to the main body via any one of the mounting parts, and the cutting component is connected to the mounting base for cutting grass. In the above-mentioned cutting device, based on the position of the grass to be cut, the mounting base of the secondary cutting mechanism is selectively connected to one of the mounting parts to install the secondary cutting mechanism to the main body. This allows the cutting device to move to an insurmountable boundary, where the cutting component in the secondary cutting mechanism cuts the grass at the insurmountable boundary, thereby improving the cutting efficiency of the cutting device.

Description

Technical Field

[0001] This application relates to the field of lawn mowing equipment technology, specifically to a cutting device. Background Technology

[0002] In existing cutting devices, the cutting mechanism is usually installed at the bottom of the main body. When the cutting device moves to an insurmountable boundary (such as the side of a wall), the cutting mechanism cannot cut the grass at the boundary and requires manual cutting of the grass at the boundary, resulting in low cutting efficiency. Utility Model Content

[0003] In view of the above, it is necessary to provide a cutting device to improve cutting efficiency.

[0004] This application provides a cutting device, including: The main body has at least two mounting parts; A walking mechanism, located on the main body, is used to drive the main body to move along the working surface; A main cutting mechanism is provided on the main body for cutting grass, and the distance of the main cutting mechanism relative to the working surface is less than the distance of the mounting part relative to the working surface; The secondary cutting mechanism includes a mounting base and a cutting assembly. The mounting base is detachably connected to the main body via any one of the mounting parts. The cutting assembly is connected to the mounting base and is used to cut grass.

[0005] In the aforementioned cutting device, based on the position of the grass to be cut, the mounting base of the secondary cutting mechanism is selectively connected to one of the mounting parts to install the secondary cutting mechanism to the main body. This allows the cutting device to move to an insurmountable boundary, where the grass at the insurmountable boundary is cut by the cutting components in the secondary cutting mechanism, thereby improving the cutting efficiency of the cutting device.

[0006] In some embodiments, the mounting base includes: The mounting component has a movable cavity, a pressing hole, and a retaining hole. The pressing hole and the retaining hole are respectively connected to the inside and outside of the movable cavity, and the opening direction of the pressing hole and the opening direction of the retaining hole are the same. The pressing component includes a pressing body, a connecting body, and a retaining body. The connecting body is movably disposed within the movable cavity. The pressing body is movably inserted into the pressing hole and connected to one end of the connecting body. The retaining body is movably inserted into the retaining hole and connected to the other end of the connecting body, for retaining to the mounting portion. An elastic element is disposed within the movable cavity, and the two ends of the elastic element elastically abut against the side of the connector opposite to the pressing hole and the inner wall of the movable cavity opposite to the pressing hole, respectively. When the pressing body is pressed, the pressing body compresses the elastic element through the connecting body and drives the retaining body to be received into the retaining hole. After the pressing force on the pressing body is removed, the elastic element elastically abuts against the connecting body so that the retaining body protrudes out of the retaining hole.

[0007] In some embodiments, the mounting component includes: An insert body is used to be inserted into the mounting part and has an insertion cavity and a retaining hole; An extension body connects to the insertion body and has an extension cavity and a pressing hole. The extension cavity communicates with the insertion cavity and is combined to form the movable cavity. The cross-sectional area of ​​the insertion body along the axial direction of the holding hole is between the cross-sectional area of ​​the mounting part and the cross-sectional area of ​​the extension body along the axial direction of the pressing hole.

[0008] In some embodiments, the retaining body has a guide slope on the side opposite to the pressing body, and the distance between the guide slope and the retaining hole gradually increases along the direction from the inserting body to the extension body.

[0009] In some embodiments, the mounting portion is provided with a first electrode, and the mounting base is provided with a second electrode. When the mounting base is inserted into the mounting portion, the first electrode and the second electrode abut against each other to electrically connect the body and the cutting assembly.

[0010] In some embodiments, the cutting component includes: A swing arm, one end of which is connected to the mounting base; A driving component is connected to the other end of the swing arm to move under the drive of the swing arm; A cutting element, connected to the drive element, rotates under the drive of the drive element to cut grass.

[0011] In some embodiments, the secondary cutting mechanism further includes: A guide member is rotatably sleeved on one end of the drive member near the cutting member to guide the movement of the cutting assembly.

[0012] In some embodiments, the periphery of the guide member is a flexible structure.

[0013] In some embodiments, the guide member has a chamfered periphery.

[0014] In some embodiments, the projection of the guide along the rotation axis of the cutter completely covers the cutter. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the cutting device according to an embodiment of this application.

[0016] Figure 2 for Figure 1 The diagram shows the structure of the main body, the traveling mechanism, and the main cutting mechanism in the cutting device.

[0017] Figure 3 for Figure 1 The diagram shows the structure of the secondary cutting mechanism in the cutting device.

[0018] Figure 4 for Figure 3 The diagram shows a cross-sectional view of the mounting base along the AA direction in the secondary cutting mechanism.

[0019] Figure 5 for Figure 3 The diagram shows a cross-sectional view of the mounting base along the BB direction in the secondary cutting mechanism.

[0020] Figure 6 for Figure 3 The diagram shows the structure of the secondary cutting mechanism from another angle.

[0021] Explanation of main component symbols: Cutting device 100, main body 110, mounting part 110a, walking mechanism 120, main cutting mechanism 130, secondary cutting mechanism 140, mounting base 141, mounting part 1411, movable cavity 1411A, pressing hole 1411a, holding hole 1411b, insertion body 1411c, extension body 1411d, insertion cavity 1411e, extension cavity 1411f, pressing part 1412, pressing body 1412a, holding body 1412b, guide slope 1412c, connecting body 1412d, elastic element 1413, cutting assembly 142, swing arm 1421, driving element 1422, cutting element 1423, guide element 143, chamfer 143a, receiving groove 143b, second electrode 150. Detailed Implementation

[0022] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the two; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. In the description of this application, it should be noted that "multiple" means two or more, unless otherwise expressly and specifically limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0025] Please see Figure 1 This application provides a cutting device 100 for cutting grass. The cutting device 100 can cut the grass at the boundary when it reaches an insurmountable boundary, thereby improving the cutting efficiency of the grass. The grass can be the vegetation to be mowed in a lawn or flower bed.

[0026] Please see Figure 2 and Figure 3 The cutting device 100 includes a main body 110, a traveling mechanism 120, a main cutting mechanism 130, and a secondary cutting mechanism 140. The main body 110 has at least two mounting portions 110a. The traveling mechanism 120 is located on the main body 110 and is used to drive the main body 110 to move along a working surface, where the working surface is the surface traversed by the traveling mechanism 120. The main cutting mechanism 130 is located on the main body 110 and is used to cut grass, and the distance between the main cutting mechanism 130 and the working surface is less than the distance between the mounting portions 110a and the working surface. The secondary cutting mechanism 140 includes a mounting base 141 and a cutting assembly 142. The mounting base 141 is detachably connected to the main body 110 via any one of the mounting portions 110a. The cutting assembly 142 is connected to the mounting base 141 and is used to cut grass. For example, the main cutting mechanism 130 is connected to the bottom of the main body 110.

[0027] In the aforementioned cutting device 100, based on the position of the grass to be cut, the mounting base 141 of the secondary cutting mechanism 140 is selectively connected to one of the mounting parts 110a to install the secondary cutting mechanism 140 to the main body 110. This allows the cutting device 100 to move to an insurmountable boundary, where the cutting component 142 in the secondary cutting mechanism 140 cuts the grass at the insurmountable boundary, thereby improving the cutting efficiency of the cutting device 100.

[0028] For example, the walking mechanism 120 includes multiple rollers and a drive motor. The multiple rollers are all connected to the bottom of the main body 110 and are spaced apart along the circumference of the main body 110. The drive motor is connected to the main body 110 and connected to the multiple rollers through a transmission shaft to drive the multiple rollers to rotate. The drive motor and the main cutting mechanism 130 are both located between the multiple rollers.

[0029] In this embodiment, the number of mounting portions 110a provided on the main body 110 is two, and the two mounting portions 110a are located on the same side of the main body 110 and are spaced apart.

[0030] In other embodiments, the number of mounting portions 110a provided on the main body 110 may be three or more.

[0031] In this embodiment, the mounting part 110a is a hole structure formed on the surface of the main body 110.

[0032] It should be noted that the number of secondary cutting mechanisms 140 can be set according to the cutting needs. For example, a single secondary cutting mechanism 140 can be selectively installed in different mounting parts 110a based on the position of the grass to be cut, or one secondary cutting mechanism 140 can be installed in each mounting part 110a.

[0033] Please see Figure 3 , Figure 4 and Figure 5In some embodiments, the mounting base 141 includes a mounting member 1411, a pressing member 1412, and an elastic member 1413. The mounting member 1411 is provided with a movable cavity 1411A, a pressing hole 1411a, and a retaining hole 1411b. The pressing hole 1411a and the retaining hole 1411b are respectively connected to the inside and outside of the movable cavity 1411A, and the opening direction of the pressing hole 1411a and the opening direction of the retaining hole 1411b are the same. The pressing member 1412 includes a pressing body 1412a, a connecting body 1412d, and a retaining body 1412b. The connecting body 1412d is movably disposed within the movable cavity 1411A. The pressing body 1412a is movably inserted into the pressing hole 1411a and connected to one end of the connecting body 1412d. The retaining body 1412b is movably inserted into the retaining hole 1411b and connected to the other end of the connecting body 1412d, for retaining it to the mounting part 110a. An elastic member 1413 is disposed within the movable cavity 1411A, and both ends of the elastic member 1413 elastically abut against the side of the connecting body 1412d opposite to the pressing hole 1411a and the inner wall of the movable cavity 1411A opposite to the pressing hole 1411a, respectively. When the pressing body 1412a is pressed, it compresses the elastic element through the connecting body 1412d and causes the retaining body 1412b to be received into the retaining hole 1411b. After the pressing force on the pressing body 1412a is removed, the elastic element 1413 elastically abuts against the connecting body 1412d, causing the retaining body 1412b to protrude from the retaining hole 1411b. For example, the elastic element 1413 can be a spring.

[0034] Therefore, through the above-described configuration, the mounting base 141 engages with the mounting part 110a via the retaining body 1412b, thereby achieving a detachable connection between the mounting base 141 and the main body 110. This reduces the difficulty of assembly and disassembly, improving the efficiency of assembly and disassembly between the secondary cutting mechanism 140 and the main body 110. Furthermore, the pressing member 1412 has a roughly U-shaped structure, and its automatic reset can be achieved via the elastic member 1413. This simple structure helps reduce the manufacturing cost of the mounting base 141.

[0035] For example, the pressing body 1412a, the connecting body 1412d, and the holding body 1412b are integrated into one structure, which can reduce the manufacturing cost of the pressing part 1412 and improve the stability of the synchronous movement of the pressing body 1412a and the holding body 1412b.

[0036] For example, the pressing body 1412a is generally rectangular in shape to facilitate the application of force, and the volume of the pressing body 1412a is larger than the volume of the holding body 1412b.

[0037] Please see Figure 2In some embodiments, the mounting member 1411 includes an insertion body 1411c and an extension body 1411d. The insertion body 1411c is inserted into the mounting portion 110a and has an insertion cavity 1411e and a retaining hole 1411b. The extension body 1411d connects to the insertion body 1411c and has an extension cavity 1411f and a pressing hole 1411a. The extension cavity 1411f communicates with the insertion cavity 1411e and combines to form a movable cavity 1411A. The cross-sectional area of ​​the insertion body 1411c along the axial direction of the retaining hole 1411b is between the cross-sectional area of ​​the mounting portion 110a and the cross-sectional area of ​​the extension body 1411d along the axial direction of the pressing hole 1411a.

[0038] Therefore, the cross-sectional area of ​​the insert 1411c along the axial direction of the retaining hole 1411b is between the cross-sectional area of ​​the mounting portion 110a and the cross-sectional area of ​​the extension 1411d along the axial direction of the pressing hole 1411a, so that the insert 1411c and the extension 1411d have a stepped structure. The insert 1411c is used to insert into the mounting portion 110a, and the extension 1411d is used to hold the main body 110, which can ensure the stability of the mounting member 1411 connected to the main body 110.

[0039] For example, the insertion body 1411c and the extension body 1411d are an integral structure, which can reduce the manufacturing cost of the mounting part 1411 and improve the strength of the mounting part 1411, thus improving the service life of the mounting part 1411.

[0040] In some embodiments, the retaining body 1412b is provided with a guide slope 1412c on the side opposite to the pressing body 1412a, and the distance between the guide slope 1412c and the retaining hole 1411b gradually increases along the direction from the insertion body 1411c to the extension body 1411d.

[0041] Therefore, the guide ramp 1412c can guide the retaining body 1412b to be held in place by the mounting portion 110a, which helps to improve the accuracy of the insertion body 1411c into the mounting portion 110a. In addition, the guide ramp 1412c can reduce the impact force of the main body 110 on the retaining body 1412b when the retaining body 1412b enters the mounting portion 110a, which helps to improve the service life of the retaining body 1412b.

[0042] Please see Figure 3 In some embodiments, a first electrode (not shown) is provided in the mounting part 110a, and a second electrode 150 is provided on the mounting base 141. When the mounting base 141 is inserted into the mounting part 110a, the first electrode and the second electrode 150 abut together to make the main body 110 and the cutting assembly 142 electrically connected.

[0043] Therefore, through the above-mentioned arrangement, the cutting component 142 can be electrically connected to the main body 110 when the mounting base 141 is connected to the main body 110, avoiding the need to add a setting structure for the cutting component 142 outside the main body 110, which is conducive to the miniaturization of the sub-cutting mechanism 140.

[0044] For example, there can be multiple first electrodes and multiple second electrodes 150, with each first electrode and each second electrode 150 corresponding to the other. Both the first electrode and the second electrode 150 can be sheet-like structures to reduce space occupation.

[0045] Please see Figure 3 and Figure 6 In some embodiments, the cutting assembly 142 includes a swing arm 1421, a drive member 1422, and a cutting member 1423. One end of the swing arm 1421 is connected to the mounting base 141, and the drive member 1422 is connected to the other end of the swing arm 1421 to move under the drive of the swing arm 1421. The cutting member 1423 is connected to the drive member 1422 to rotate under the drive of the drive member 1422 to cut grass. Exemplarily, the drive member 1422 can be a servo motor.

[0046] Therefore, the position of the drive component 1422 and the cutting component 1423 relative to the main body 110 can be adjusted by the swing arm 1421 to expand the cutting range of the cutting assembly 142.

[0047] For example, the swing arm 1421 can be a flexible structure, and the degree of bending of the swing arm 1421 can be adjusted manually to adjust the position of the drive member 1422 and the cutting member 1423 relative to the main body 110. Alternatively, the swing arm 1421 can be a drive unit that is connected to and can drive the drive member 1422 to move, so as to realize the automatic adjustment of the drive member 1422 and the cutting member 1423 relative to the main body 110.

[0048] For example, the cutting element 1423 can be a serrated blade, and there can be multiple cutting elements 1423. Multiple cutting elements 1423 are respectively connected to the driving element 1422 and are arranged at intervals along the circumference of the driving element 1422 to improve the efficiency of cutting grass.

[0049] Please see Figure 3 In some embodiments, the secondary cutting mechanism 140 further includes a guide 143. The guide 143 is rotatably sleeved on the end of the drive member 1422 near the cutting member 1423 to guide the movement of the cutting assembly 142.

[0050] Therefore, the guide member 143 can support the external structure, such as a wall, to prevent the external structure from damaging the cutting member 1423.

[0051] For example, please seeFigure 6 The guide member 143 has a receiving groove 143b on the side facing the cutting member 1423. The cutting member 1423 is located in the receiving groove 143b, which can prevent the hard structure on the working surface from damaging the cutting member 1423.

[0052] In some embodiments, the periphery of the guide 143 is a flexible structure, which can reduce the damage rate of the guide 143 and help improve the service life of the guide 143.

[0053] For example, a rubber ring is fitted around the periphery of the guide member 143.

[0054] In some embodiments, the guide member 143 has a chamfer 143a around its periphery, which can avoid stress concentration when the guide member 143 abuts against the external structure, reduce the risk of damage to the guide member 143, and thus improve the service life of the guide member 143.

[0055] In some embodiments, the projection of the guide 143 along the rotation axis of the cutter 1423 completely covers the cutter 1423.

[0056] Therefore, through the above arrangement, the cutting element 1423 is completely housed within the guide element 143, which can prevent the cutting element 1423 from causing harm to objects or personnel outside the secondary cutting mechanism 140, and is conducive to improving the safety of the secondary cutting mechanism 140.

[0057] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A cutting device, characterized in that, include: The main body has at least two mounting parts; A walking mechanism, located on the main body, is used to drive the main body to move along the working surface; A main cutting mechanism is provided on the main body for cutting grass, and the distance of the main cutting mechanism relative to the working surface is less than the distance of the mounting part relative to the working surface; The secondary cutting mechanism includes a mounting base and a cutting assembly. The mounting base is detachably connected to the main body via any one of the mounting parts. The cutting assembly is connected to the mounting base and is used to cut grass.

2. The cutting device as described in claim 1, characterized in that, The mounting base includes: The mounting component has a movable cavity, a pressing hole, and a retaining hole. The pressing hole and the retaining hole are respectively connected to the inside and outside of the movable cavity, and the opening direction of the pressing hole and the opening direction of the retaining hole are the same. The pressing component includes a pressing body, a connecting body, and a retaining body. The connecting body is movably disposed within the movable cavity. The pressing body is movably inserted into the pressing hole and connected to one end of the connecting body. The retaining body is movably inserted into the retaining hole and connected to the other end of the connecting body, for retaining to the mounting portion. An elastic element is disposed within the movable cavity, and the two ends of the elastic element elastically abut against the side of the connector opposite to the pressing hole and the inner wall of the movable cavity opposite to the pressing hole, respectively. When the pressing body is pressed, the pressing body compresses the elastic element through the connecting body and drives the retaining body to be received into the retaining hole. After the pressing force on the pressing body is removed, the elastic element elastically abuts against the connecting body so that the retaining body protrudes out of the retaining hole.

3. The cutting device as described in claim 2, characterized in that, The mounting component includes: An insert body is used to be inserted into the mounting part and has an insertion cavity and a retaining hole; An extension body connects to the insertion body and has an extension cavity and a pressing hole. The extension cavity communicates with the insertion cavity and is combined to form the movable cavity. The cross-sectional area of ​​the insertion body along the axial direction of the holding hole is between the cross-sectional area of ​​the mounting part and the cross-sectional area of ​​the extension body along the axial direction of the pressing hole.

4. The cutting device as described in claim 3, characterized in that, The retaining body has a guide slope on the side opposite to the pressing body, and the distance between the guide slope and the retaining hole gradually increases along the direction from the insert body to the extension body.

5. The cutting device as described in claim 1, characterized in that, The mounting part is provided with a first electrode, and the mounting base is provided with a second electrode. When the mounting base is inserted into the mounting part, the first electrode and the second electrode abut against each other, so that the main body and the cutting assembly are electrically connected.

6. The cutting device as described in claim 1, characterized in that, The cutting assembly includes: A swing arm, one end of which is connected to the mounting base; A driving component is connected to the other end of the swing arm to move under the drive of the swing arm; A cutting element, connected to the drive element, rotates under the drive of the drive element to cut grass.

7. The cutting device as described in claim 6, characterized in that, The secondary cutting mechanism also includes: A guide member is rotatably sleeved on one end of the drive member near the cutting member to guide the movement of the cutting assembly.

8. The cutting device as described in claim 7, characterized in that, The periphery of the guide component is a flexible structure.

9. The cutting device as described in claim 7, characterized in that, The guide member has a chamfered periphery.

10. The cutting device as claimed in claim 7, characterized in that, The projection of the guide along the rotation axis of the cutting element completely covers the cutting element.

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