Lawn mower

Abstract

The utility model discloses a mower, and belongs to the field of mowers. The mower comprises a machine head and a handle, and the machine head is connected with a mounting shell; the mounting shell is provided with a first working position and a second working position; the mower further comprises a guide wheel which is detachably installed on the first working position or the second working position of the installation shell and can rotate relative to the installation shell. When the guide wheel is in the first working position, the guide wheel is perpendicular to or tends to be perpendicular to the rotating axis of the machine head, and when the guide wheel is in the second working position, the guide wheel is parallel to or tends to be parallel to the rotating axis of the machine head. The guide wheel is provided with a mounting part; the first working position and the second working position are the same in structure and each comprise a connecting part matched with the mounting part. The lawn mower has the beneficial effects that the guide wheel of the lawn mower can be switched into the trimming wheel or the walking wheel.

Description

Technical Field

[0001] This application relates to the field of lawnmowers, and more specifically, to a lawnmower. Background Technology

[0002] In modern agriculture and landscaping, lawnmowers are indispensable pieces of machinery, constantly evolving with technological advancements. Currently, many lawnmowers on the market are equipped with both trimming wheels and drive wheels to meet diverse operational needs. Trimming wheels are primarily used for precise trimming of the lawn's edges, ensuring a neat and aesthetically pleasing outline; drive wheels, on the other hand, propel the lawnmower across different terrains, ensuring smooth mowing operations.

[0003] However, while this dual-wheel configuration offers functional advantages, it also exposes a series of problems. From a mechanical design perspective, the simultaneous installation of two types of wheels makes the overall layout of the lawnmower more complex, requiring more space for installing components, the transmission system, and corresponding fixing and support structures. This directly leads to a significant increase in the size of the lawnmower. For gardeners and home users, the larger size not only occupies more space during transport and storage but also increases the difficulty of operation, especially in narrow areas or complex terrain, greatly reducing flexibility.

[0004] From a cost perspective, the dual-wheel configuration undoubtedly increases the production burden on enterprises. The trimming wheel and the driving wheel themselves require different materials and processes for manufacturing, increasing the cost of raw material procurement and production. Simultaneously, the increased structural complexity leads to higher labor costs in the assembly process, and subsequent maintenance becomes more difficult and expensive. Furthermore, the increased transportation costs due to the larger size, and the price disadvantage caused by excessively high costs in market competition, severely restrict the promotion and use of this type of lawnmower. These issues necessitate that researchers explore more efficient, compact, and economical lawnmower designs to meet the ever-evolving demands of the market. Utility Model Content

[0005] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0006] To address the technical problems mentioned in the background section, some embodiments of this application provide a lawnmower, including: a head and a handle.

[0007] The machine head is connected to a mounting housing;

[0008] The mounting housing has a first working position and a second working position;

[0009] The lawnmower also includes:

[0010] The guide wheel is detachably mounted on the first or second working position of the mounting housing and is capable of rotating relative to the mounting housing;

[0011] When the guide wheel is in the first working position, it is perpendicular to or tends to be perpendicular to the rotation axis of the machine head; when the guide wheel is in the second working position, it is parallel to or tends to be parallel to the rotation axis of the machine head.

[0012] The guide wheel has a mounting part; both the first working position and the second working position are provided with a connecting part that cooperates with the mounting part, and the mounting part is connected to the mounting shell or the connecting part by a locking member.

[0013] Furthermore, the connecting part includes a connecting shaft fixed to the mounting shell, the connecting shaft protruding radially to form a first blocking part, the locking member having a second blocking part and a control part, the control part being able to control the second blocking part to be limited or disengaged from the first blocking part.

[0014] Furthermore, the locking component includes two components, namely a first locking component and a second locking component, which are arranged opposite to each other. A first reset structure is formed between the control part of the first locking component and the second blocking part of the second locking component, and a second reset structure is formed between the control part of the second locking component and the second blocking part of the first locking component. When the control part of the first locking component and the control part of the second locking component move closer together, the second blocking parts of the first locking component and the second blocking parts of the second locking component move away from each other.

[0015] Furthermore, the first reset structure and / or the second reset structure is a spring or elastic strip / plate / plate structure.

[0016] Furthermore, a guide slope is formed on the end face of the first blocking part away from the mounting shell.

[0017] Furthermore, the connecting part has a connecting block with a first connecting hole, and the mounting shell has a second connecting hole. The bolt passes through the first connecting hole and connects with the second connecting hole on the mounting shell.

[0018] Furthermore, multiple first blocking portions are evenly distributed along the circumference of the connecting shaft.

[0019] Furthermore, the handle includes a front section and a rear section, the front section is connected to the machine head, and the rear section is rotatably connected to the front section and controlled by a locking element to rotate or lock relative to the front section.

[0020] Furthermore, the locking component includes a connecting cylinder fixed to the front section and a locking plate rotatably connected to the connecting cylinder. A locking protrusion is fixed on the locking plate. The rear section is inserted into the connecting cylinder. A first locking hole and a second locking hole are provided on the side wall of the rear section. The first locking hole and the second locking hole are spaced 90 degrees apart. The locking protrusion is inserted into the first locking hole or the second locking hole.

[0021] The beneficial effect of this application is that it provides a lawnmower with switchable guide wheel states. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0023] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0024] In the attached diagram:

[0025] Figure 1 This is an overall schematic diagram based on Embodiment 1 of this application;

[0026] Figure 2 This is a partial structural schematic diagram of Embodiment 1, mainly showing the first working position and the second working position;

[0027] Figure 3 This is a partial structural schematic diagram of Example 1;

[0028] Figure 4 yes Figure 3 Enlarged view of part A;

[0029] Figure 5 This is a structural diagram of the guide wheel;

[0030] Figure 6 This is a structural diagram of the installation section;

[0031] Figure 7 This is a structural diagram of the first locking component;

[0032] Figure 8 This is a structural diagram of the second locking component;

[0033] Figure 9 This is a structural diagram of a lock component;

[0034] Figure 10 This is another embodiment of the first and second reset structures;

[0035] Figure 11This is a schematic diagram of the locking plate.

[0036] Figure label:

[0037] 1. Mounting housing; 2. Guide wheel; 3. Mounting part; 4. Connecting part; 5. Connecting shaft; 6. First blocking part; 7. Locking element; 8. Second blocking part; 9. Connecting block; 10. First connecting hole; 11. Second connecting hole; 12. First locking element; 13. Second locking element; 14. First reset structure; 15. Locking bolt; 16. Second reset structure; 17. Wheel; 18. Notch; 19. Guide slope; 20. First pressing part; 21. Second pressing part; 22. Machine head; 23. First working position; 24. Second working position; 25. Front section; 26. Rear section; 27. Connecting cylinder; 28. Locking plate; 29. ​​Locking protrusion; 30. Guide strip. Detailed Implementation

[0038] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0039] It should also be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0040] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0041] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0042] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0043] Example 1: A lawnmower includes a head and a handle, wherein the handle is divided into a front section 25 and a rear section 26. The front section is connected to the head, and the rear section 26 is rotatably connected to the front section 25 and controlled by a locking device to rotate relative to or lock the rear section relative to the front section. Specifically, the locking device includes a connecting cylinder 27 fixed to the end of the front section away from the mounting housing, and a locking plate 28 rotatably connected to the connecting cylinder 27. A locking protrusion 29 is fixed on the locking plate 28. One end of the rear section 26 is inserted into the connecting cylinder 27, and the other end has a handle. A first locking hole and a second locking hole are provided on the side wall of the rear section 26, with a 90-degree interval between the first locking hole and the second locking hole. The locking protrusion 29 is inserted into the first locking hole or the second locking hole.

[0044] The head 22 is connected to a mounting housing 1; the mounting housing 1 has a first working position 23 and a second working position 24. The head 22 generally includes a motor and a mowing blade or trimming rope, and the motor drives the mowing blade or trimming rope to rotate.

[0045] The lawnmower also includes guide wheels 2. The guide wheels 2 are detachably mounted on the first working position 23 or the second working position 24 of the mounting housing 1 and are rotatable relative to the mounting housing 1. In the first working position 23, the guide wheels 2 are perpendicular to or nearly perpendicular to the rotation axis of the mower head 22; in the second working position 24, the guide wheels 2 are parallel to or nearly parallel to the rotation axis of the mower head 22. Preferably, they are exactly perpendicular or parallel.

[0046] It should be noted that the mounting housing 1 can be integrally formed with the outer shell of the machine head 22, or it can be detached and connected to the machine head 22, for example, through snap-fit ​​or bolt connection. The mounting housing 1 can also be a mounting part of the integrated grass guard. Its core purpose is to provide a component for mounting the guide wheel 2. The outer shell of the machine head 22 generally refers to a housing that accommodates the motor, although in some cases it can also be the motor housing. The mounting housing 1 itself can be a one-piece structure or a modular assembly.

[0047] Specifically, the guide wheel 2 has a mounting part 3; the first working position 23 and the second working position 24 are both provided with a connecting part 4 that cooperates with the mounting part 3, and the mounting part 3 is connected to the mounting shell 1 or the connecting part 4 by a locking member 7.

[0048] As one type of locking mechanism, the locking component can employ a locking bolt 15. The connecting part is a threaded hole formed on the mounting housing. The mounting part 3 can be understood as a sleeve with a through hole in its center. The locking bolt 15 passes through the through hole and connects with the threaded hole, thereby connecting the mounting part 3 to the mounting housing 1. In this type of guide wheel, a wheel 17 that can rotate relative to the mounting part is generally set on the outer ring of the mounting part 3, so that the locking bolt 15 can directly lock the mounting part 3. If the wheel and the mounting part are fixed or integrated, the locking bolt cannot lock the mounting part, and the mounting part 3 rotates with the wheel 17. In this case, the locking bolt only serves to prevent the guide wheel from disengaging along the axial direction of the locking bolt.

[0049] As a preferred type of lock 7 structure, the structure of its connecting part 4 is also changed accordingly. The mounting part can be understood as a hub with a through hole in the center. The connecting part 4 includes a connecting shaft 5 fixed to the mounting shell 1. The side wall of the connecting shaft 5 protrudes radially to form a first blocking part 6. The lock 7 has a second blocking part 8 and a control part. The control part can control the second blocking part 8 to be limited or disengaged from the first blocking part 6.

[0050] The locking member 7 includes a first locking member 12 and a second locking member 13, which are disposed opposite to each other. A first reset structure 14 is formed between the control part of the first locking member 12 and the second blocking part of the second locking member 13, and a second reset structure 16 is formed between the control part of the second locking member 13 and the second blocking part of the first locking member 12. When the control parts of the first locking member and the second locking member move closer together, the second blocking parts of the first locking member and the second blocking parts of the second locking member move away from each other.

[0051] For ease of explanation, the control part of the first locking member is defined as the first pressing part, and the control part of the second locking member is defined as the second pressing part. Specifically, the first locking member 12 is a closed-loop structure. The second blocking part 8 and the first reset structure 14 are located at opposite ends. The first reset structure 14 includes two elastic strips on the same straight line, with their adjacent ends spaced apart to allow for deformation space. The first locking member 12 is made of plastic, and the elastic strips rely on the material itself for elastic reset. The second blocking part 8 has a C-shaped structure, and the outer side of the C-shaped structure abuts against the second reset structure 16.

[0052] The second locking member 13 is an open-loop structure with a notch 18. The first locking member 12 enters through this notch 18, allowing the two rings of the first and second locking members to fasten together like a keychain. Since the second locking member 13 is also made of plastic, the notch 18 can be enlarged by bending its sides. The second reset structure 16 is the same as the first reset structure 14, with two C-shaped structures arranged opposite each other to form a ring-like structure for interference fit with the connecting shaft 5.

[0053] Since there are two locking components, one way to design the first blocking part 6 is to make it into a ring so that the second blocking part 8 can be blocked at any position. A more preferred second way to design the first blocking part is to have multiple first blocking parts 6 spaced apart along the circumference of the connecting shaft 5, specifically, four first blocking parts 6 are evenly distributed along the circumference of the connecting shaft 5.

[0054] To facilitate the insertion of the guide wheel 2 into the connecting shaft 5, a guide slope 19 is designed on the end face of the first blocking part 6 away from the mounting shell 1. Using the guide slope 19, when the guide wheel 2 is pressed, the second blocking part on the guide wheel 2 abuts against the guide slope 19 of the first blocking part 6, causing the second blocking part to expand outwards, thus allowing the guide wheel 2 to be inserted into the connecting shaft 5. After the second blocking part is inserted into the connecting shaft, the first and second reset structures reset and engage with the connecting shaft with a clearance fit. To remove the guide wheel 2, simply press the first pressing part 20 and the second pressing part 21 simultaneously. At this time, the first pressing part 20 and the second pressing part move closer together, and the two second blocking parts 8 move away from each other, thus avoiding the first blocking part 6. The guide wheel 2 can then move outwards along the axial direction of the connecting shaft 5 and disengage. To prevent the first pressing part 20 and the second pressing part 21 from shifting during operation, a guide strip 30 is integrally formed on the mounting part, and guide grooves corresponding to the guide strip 30 are formed on the first pressing part 20 and the second pressing part 21.

[0055] Another preferred method for the first reset structure 14 and the second reset structure 16 is to use springs. Springs are more elastic and stable. One spring is provided for each reset structure and is connected to the middle position of the C-shaped structure.

[0056] The connection method between the connecting part 4 of the first working position 23 and the mounting shell 1 differs from that of the connecting part 4 of the second working position 24. The connecting part 4 of the first working position 23 is integrally formed with the mounting shell 1. The connecting part 4 of the second working position 24 is detachably fixed to the mounting shell 1. Specifically, the connecting part 4 has a connecting block 9 with a first connecting hole 10. The mounting shell 1 has a second connecting hole 11, and a bolt passes through the first connecting hole 10 to connect with the second connecting hole 11 on the mounting shell 1. The first connecting hole 10 is an elongated hole to adjust the height of the connecting block 9, and ultimately adjust the height of the guide wheel 2.

[0057] Additional notes: In the first working position 23, the guide wheel 2 is used as a traveling wheel; in the second working position 24, the guide wheel 2 is used as a trimming wheel. When using the trimming wheel, the locking plate 28 needs to be rotated, the locking protrusion 29 disengages from the first locking hole, and then the rear section is rotated 90 degrees before locking again, and the locking protrusion 29 is inserted into the second locking hole.

[0058] The rotation axis of the machine head 22 can be understood as the output axis of the motor.

[0059] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in the embodiments of this disclosure is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A lawnmower, comprising: Head and handle, The machine head is connected to a mounting housing; Its features are: The mounting housing has a first working position and a second working position; The lawnmower also includes: The guide wheel is detachably mounted on the first or second working position of the mounting housing and is capable of rotating relative to the mounting housing; When the guide wheel is in the first working position, it is perpendicular to or tends to be perpendicular to the rotation axis of the machine head; when the guide wheel is in the second working position, it is parallel to or tends to be parallel to the rotation axis of the machine head.

2. The lawnmower according to claim 1, characterized in that: The guide wheel has a mounting part; both the first working position and the second working position are provided with a connecting part that cooperates with the mounting part, and the mounting part is connected to the mounting shell or the connecting part by a locking member.

3. The lawnmower according to claim 2, characterized in that: The connecting part includes a connecting shaft fixed to the mounting shell. The connecting shaft protrudes radially to form a first blocking part. The locking member has a second blocking part and a control part. The control part can control the second blocking part to be limited or disengaged from the first blocking part.

4. The lawnmower according to claim 3, characterized in that: The locking components include two components, namely a first locking component and a second locking component, which are arranged opposite to each other. A first reset structure is formed between the control part of the first locking component and the second blocking part of the second locking component, and a second reset structure is formed between the control part of the second locking component and the second blocking part of the first locking component. When the control parts of the first locking component and the second locking component move closer together, the second blocking parts of the first locking component and the second blocking parts of the second locking component move away from each other.

5. The lawnmower according to claim 4, characterized in that: The first reset structure and / or the second reset structure is a spring or elastic strip / plate / plate structure.

6. The lawnmower according to claim 4, characterized in that: The end face of the first blocking part away from the mounting shell forms a guide slope.

7. The lawnmower according to claim 2, characterized in that: The connecting part has a connecting block with a first connecting hole, and the mounting shell has a second connecting hole. The bolt passes through the first connecting hole and connects with the second connecting hole on the mounting shell.

8. The lawnmower according to claim 3, characterized in that: The first blocking part is evenly distributed in multiple parts along the circumference of the connecting shaft.

9. The lawnmower according to claim 1, characterized in that: The handle includes a front section and a rear section. The front section is connected to the machine head, and the rear section is rotatably connected to the front section. The rear section is controlled to rotate relative to the front section or to lock through a locking device.

10. The lawnmower according to claim 9, characterized in that: The locking component includes a connecting cylinder fixed to the front section and a locking plate rotatably connected to the connecting cylinder. A locking protrusion is fixed on the locking plate. The rear section is inserted into the connecting cylinder. A first locking hole and a second locking hole are opened on the side wall of the rear section. The first locking hole and the second locking hole are spaced 90 degrees apart. The locking protrusion is inserted into the first locking hole or the second locking hole.

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