Machine head device of mowing machine

Abstract

The invention discloses a machine head device of a mower, and belongs to the field of mowers. A machine head device of a mower comprises a machine head and a mounting shell connected to the machine head. The mounting shell is provided with a first working position and a second working position; the machine head device of the mowing machine 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 machine head device has the beneficial effects that the guide wheel of the machine head device can be switched into the trimming wheel or the walking wheel.

Description

Technical Field

[0001] This application relates to the field of lawn mowers, and more particularly, to a head device of a lawn mower. Background Art

[0002] In the fields of modern agriculture and garden maintenance, lawn mowers, as indispensable mechanical equipment, are constantly innovating with technological iterations. Currently, many lawn mowers on the market are equipped with both trimming wheels and driving wheels to meet diverse operation requirements. The trimming wheel is mainly used for fine trimming of the lawn edge to ensure a neat and beautiful lawn contour; the driving wheel undertakes the function of driving the lawn mower to move on different terrains, ensuring the smooth progress of the mowing operation.

[0003] However, while this dual-wheel configuration brings functional advantages, it also exposes a series of problems. From the perspective of mechanical structure design, the simultaneous installation of the two types of wheels makes the overall layout of the lawn mower more complex, requiring more space to be reserved for installing components, the transmission system, and the corresponding fixing and supporting structures, which directly leads to a significant increase in the volume of the lawn mower. For garden maintenance workers and household users, the larger volume not only occupies more space during handling and storage but also increases the operation difficulty, especially in narrow areas or complex terrains, where the flexibility is greatly reduced.

[0004] In terms of cost, the dual-wheel configuration undoubtedly increases the production burden on enterprises. The trimming wheel and the driving wheel themselves need to be manufactured using different materials and processes, increasing the costs of raw material procurement and production processing. At the same time, due to the increased structural complexity, the labor cost in the assembly process also rises accordingly, and the subsequent maintenance difficulty and cost also increase. In addition, the increased transportation cost due to the large volume and the price disadvantage in the market competition caused by the high cost seriously restrict the popularization and use of such lawn mowers. These problems have made it urgent for R & D personnel to explore more efficient, compact, and economical lawn mower design solutions to meet the continuously upgraded market demands. Summary of the Invention

[0005] The content part of this application is used to briefly introduce concepts, which will be described in detail in the following detailed implementation part. The content part of this application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0006] To solve the technical problems mentioned in the above background art part, some embodiments of this application provide a head device of a lawn mower, including: a head and a mounting shell connected to the head;

[0007] Characterized in that:

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

[0009] The head device of the lawn mower further includes:

[0010] A guide wheel, detachably mounted on the first working position or the second working position of the mounting shell and capable of rotating relative to the mounting shell;

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

[0012] The guide wheel has a mounting portion; connection portions cooperating with the mounting portion are provided on both the first working position and the second working position, and the mounting portion is connected to the mounting shell or the connection portion through a locking member.

[0013] Further, the connection portion includes a connection shaft fixed to the mounting shell. The connection shaft protrudes radially outwards to form a first blocking portion. The locking member has a second blocking portion and a control portion, and the control portion can control the second blocking portion to be limited or disengaged from the first blocking portion.

[0014] Further, there are two locking members, namely a first locking member and a second locking member, which are oppositely arranged. A first reset structure is formed between the control portion of the first locking member and the second blocking portion of the second locking member, and a second reset structure is formed between the control portion of the second locking member and the second blocking portion of the first locking member; when the control portions of the first locking member and the second locking member move closer, the second blocking portions of the first locking member and the second locking member move away from each other.

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

[0016] Further, a guiding inclined surface is formed on the end surface of the first blocking portion away from the mounting shell.

[0017] Further, the connection portion has a connection block, a first connection hole is formed on the connection block, and a second connection hole is formed on the mounting shell. A bolt passes through the first connection hole and is connected to the second connection hole on the mounting shell.

[0018] Further, the first connection hole is an elongated hole.

[0019] A head device of a lawn mower, including: a head, and a mounting shell connected to the head;

[0020] Characterized in that:

[0021] The mounting shell has a first working position and a second working position;

[0022] The head device of the lawn mower further includes:

[0023] A guide wheel, the guide wheel having a guide wheel connecting member, the guide wheel connecting member being mounted on the mounting housing and driving the guide wheel to move to a first working position or a second working position by rotation and / or sliding and being able to rotate relative to the mounting housing;

[0024] A locking member, provided on the guide wheel connecting member and / or the mounting housing, capable of locking the guide wheel connecting member located at the first working position or the second working position;

[0025] When the guide wheel is in the first working position, the guide wheel is perpendicular or tends to be perpendicular to the rotation axis of the head. When the guide wheel is in the second working position, the guide wheel is parallel or tends to be parallel to the rotation axis of the head.

[0026] Further, the mounting housing has a guiding structure, the guiding structure having a horizontal portion and a vertical portion, and the guide wheel connecting member slides on the guiding structure; when the guide wheel connecting member is located on the vertical portion, it is in the first working position, and when the guide wheel connecting member is located on the horizontal portion, it is in the second working position.

[0027] Further, the guide wheel connecting member is rotatably connected to the mounting housing, and the rotation axis of the guide wheel connecting member is inclined and the inclination angle is 45 degrees or tends to be 45 degrees.

[0028] It should be noted that the mounting housing can be integrally formed with the outer shell of the head or detachably connected to the head, for example, by snap connection, bolt connection, etc. The mounting housing can also be an installation part integrating a grass guard. Its core purpose is to provide a component for mounting the guide wheel.

[0029] The beneficial effect of the present application is: to provide a head device of a lawn mower with a guide wheel whose state can be switched. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings constituting a part of the present application are used to provide a further understanding of the present application, making other features, objects, and advantages of the present application more obvious. The schematic embodiments and descriptions thereof of the present application are used to explain the present application and do not constitute an improper limitation of the present application.

[0031] In addition, throughout the 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 and components are not necessarily drawn to scale.

[0032] In the drawings:

[0033] Figure 1 is the overall schematic diagram according to Embodiment 1 of the present application;

[0034] Figure 2 It is a partial structural schematic diagram of Embodiment 1, mainly showing the first working position and the second working position;

[0035] Figure 3 It is a partial structural schematic diagram of Embodiment 1;

[0036] Figure 4 It is Figure 3 an enlarged view of part A of

[0037] Figure 5 It is a structural diagram of the guide wheel;

[0038] Figure 6 It is a structural diagram of the installation part;

[0039] Figure 7 It is a structural diagram of the first locking part;

[0040] Figure 8 It is a structural diagram of the second locking part;

[0041] Figure 9 It is a kind of structural diagram of the locking part;

[0042] Figure 10 It is another implementation diagram of the first reset structure and the second reset structure;

[0043] Figure 11 It is a schematic diagram of Embodiment 2;

[0044] Figure 12 It is a schematic diagram of Embodiment 3.

[0045] Reference numerals:

[0046] 1. Installation shell; 2. Guide wheel; 3. Installation part; 4. Connection part; 5. Connection shaft; 6. First blocking part; 7. Locking part; 8. Second blocking part; 9. Connection block; 10. First connection hole; 11. Second connection hole; 12. First locking part; 13. Second locking part; 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. T-shaped groove; 26. T-shaped block; 27. First installation hole; 28. Second installation hole; 29. Locking part; 30. Guide bar; 31. Guide wheel connecting piece; 32. Limit head. Detailed implementation manners

[0047] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.

[0048] In addition, it should be noted that for the sake of convenience of description, only parts related to the relevant invention are shown in the drawings. Without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0049] It should be noted that concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0050] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive. Those skilled in the art should understand that unless clearly specified otherwise in the context, it should be understood as "one or more".

[0051] The present disclosure will be described in detail below with reference to the drawings and in combination with embodiments.

[0052] Embodiment 1: A head device of a lawn mower, comprising: a head 22 and a mounting shell 1 connected to the head 22; the mounting shell 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 a whipping rope, and the motor drives the mowing blade or the whipping rope to rotate. The mounting shell 1 can be integrally formed with the outer shell of the mowing head 22, or can be detachably connected to the mowing head 22, such as by snap connection, bolt connection, etc. The mounting shell 1 can also be an installation part integrating a grass guard. The outer shell of the head 22 generally refers to a shell for accommodating the motor, and of course, in some cases, it can also be the motor housing.

[0053] The head device of the lawn mower further includes a guide wheel 2. The guide wheel 2 is detachably mounted on the first working position 23 or the second working position 24 of the mounting shell 1 and can rotate relative to the mounting shell 1; when the guide wheel 2 is in the first working position 23, the guide wheel 2 is perpendicular or tends to be perpendicular to the rotation axis of the head 22, and when the guide wheel 2 is in the second working position 24, the guide wheel 2 is parallel or tends to be parallel to the rotation axis of the head 22. Preferably, it is generally exactly perpendicular or parallel.

[0054] Specifically, the guide wheel 2 has an installation part 3; both the first working position 23 and the second working position 24 are provided with a connecting part 4 that cooperates with the installation part 3, and the installation part 3 is connected to the installation shell 1 or the connecting part 4 through a locking part 7.

[0055] As a structure of the locking part, the locking part can adopt a locking bolt 15. The connecting part is a threaded hole opened on the installation shell. The installation part 3 can be understood as a sleeve, and a through hole is opened in the center of the sleeve. The locking bolt 15 passes through the through hole and is connected to the threaded hole, thereby connecting the installation part 3 to the installation shell 1. Generally, for a guide wheel in this way, a wheel 17 that can rotate relative to the installation part is further provided on the outer ring of the installation part 3. In this way, the locking bolt 15 can directly lock the installation part 3. If the wheel and the installation part are fixed or integral, the locking bolt cannot lock the installation part, and the installation part rotates with the wheel. At this time, the locking bolt only plays a role in restricting the guide wheel from disengaging along the axial direction of the locking bolt.

[0056] As a more preferred structure of the locking part 7, the structure of the connecting part 4 also changes accordingly. The installation 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 installation shell 1. A first blocking part 6 protrudes radially outward from the side wall of the connecting shaft 5. The locking part 7 has a second blocking part 8 and a control part, and the control part can control the second blocking part 8 to be limited or disengaged from the first blocking part 6.

[0057] The locking part 7 includes a first locking part 12 and a second locking part 13. The first locking part 12 and the second locking part 13 are arranged oppositely. A first reset structure 14 is formed between the control part of the first locking part 12 and the second blocking part of the second locking part 13, and a second reset structure 16 is formed between the control part of the second locking part 13 and the second blocking part of the first locking part 12; when the control parts of the first locking part and the second locking part move closer, the second blocking parts of the first locking part and the second locking part move away from each other.

[0058] For the convenience of explanation, the control part of the first locking part is defined as the first pressing part, and the control part of the second locking part is defined as the second pressing part; specifically, the first locking part 12 is an overall 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. The adjacent ends of the two elastic strips are arranged at intervals so that the two elastic strips have a deformation space. The first locking part 12 is an overall plastic part, and the elastic strips are reset by the elasticity of the material itself. The second blocking part 8 is a C-shaped structure, and the outer side of the C-shaped structure abuts against the second reset structure 16.

[0059] Second locking element 13 is an open-loop structure with a notch 18. First locking element 12 enters this notch 18, allowing the two rings of the first and second locking elements to snap together like a keychain. Since second locking element 13 is also made of plastic, notch 18 can be enlarged by prying on either side. Second reset structure 16 is identical to first reset structure 14, consisting of two C-shaped structures positioned opposite each other to form a similar circular ring structure, providing an interference fit with connecting shaft 5.

[0060] Since two locking members are provided, one embodiment of the first blocking portion 6 is to be designed as an annular ring so that the second blocking portion 8 can be blocked at any position. A second, more preferred embodiment of the first blocking portion is to provide a plurality of first blocking portions 6 spaced apart along the circumference of the connecting shaft 5, specifically, to provide four first blocking portions 6 spaced evenly along the circumference of the connecting shaft 5.

[0061] In order to facilitate the insertion of the guide wheel 2 into the connecting shaft 5, the first blocking portion 6 is designed to be a guide bevel 19 on one end surface away from the mounting shell 1. When the guide wheel 2 is pressed using the guide bevel 19, the second blocking portion on the guide wheel 2 abuts against the guide bevel 19 of the first blocking portion 6, causing the second blocking portion to expand outward, thereby allowing the guide wheel 2 to be inserted into the connecting shaft 5. After the second blocking portion is inserted into the connecting shaft, the first reset structure and the second reset structure reset it to fit the clearance of the connecting shaft. To remove the guide wheel 2, simply press the first pressing portion 20 and the second pressing portion 21 at the same time. At this time, the first pressing portion 20 and the second pressing portion move closer to each other, and the two second blocking portions 8 move away from each other to avoid the first blocking portion 6, allowing the guide wheel 2 to move outward along the connecting shaft 5 and disengage. In order to facilitate the first pressing portion 20 and the second pressing portion 21 to not deviate during operation, a guide strip 30 is integrally formed on the mounting portion, and the first pressing portion 20 and the second pressing portion 21 are provided with guide grooves corresponding to the guide strip 30.

[0062] Another more preferred embodiment of the first reset structure 14 and the second reset structure 16 is to use a spring. The spring has stronger elasticity and is more stable. A spring is provided for each reset structure and is connected to the middle position of the C-shaped structure.

[0063] The connection method between the connecting portion 4 of the first working position 23 and the mounting housing 1 is different from that of the connecting portion 4 of the second working position 24. The connecting portion 4 of the first working position 23 is integrally formed with the mounting housing 1. The connecting portion 4 of the second working position 24 is detachably fixed to the mounting housing 1. Specifically, the connecting portion 4 includes a connecting block 9 with a first connecting hole 10 defined therein. The mounting housing 1 has a second connecting hole 11 defined therein. A bolt passes through the first connecting hole 10 to connect the bolt to the second connecting hole 11 of the mounting housing 1. The first connecting hole 10 is an elongated hole, which facilitates adjustment of the height of the connecting block 9 and, ultimately, the height of the guide wheel 2.

[0064] Embodiment 2: A head device of a lawn mower, comprising: a head 22, and a mounting shell 1 connected to the head 22. The head 22 refers to Embodiment 1. The mounting shell 1 has a first working position 23 and a second working position 24; the head device of the lawn mower further comprises: a guiding structure, a guiding wheel 2, and a locking member 29.

[0065] The guiding structure is arranged on the mounting shell 1; the guiding structure has a horizontal portion and a vertical portion. The guiding wheel 2 has a guide wheel connecting member 31, and the guide wheel connecting member 31 is installed on the mounting shell 1 and can slide along the guiding structure to the first working position 23 or the second working position 24 and can rotate relative to the mounting shell 1; when the guide wheel connecting member 31 is located on the vertical portion, it is in the first working position, and when the guide wheel connecting member 31 is located on the horizontal portion, it is in the second working position. The locking member is arranged on the guide wheel connecting member 31 and / or the mounting shell 1 and can lock the guiding wheel 2 located in the first working position 23 or the second working position 24; when the guiding wheel 2 is in the first working position 23, the guiding wheel 2 is perpendicular or tends to be perpendicular to the rotation axis of the head 22, and when the guiding wheel 2 is in the second working position 24, the guiding wheel 2 is parallel or tends to be parallel to the rotation axis of the head 22.

[0066] The guiding structure is a T-shaped groove 25, the guiding wheel 2 has a T-shaped block 26 located in the T-shaped groove 25, the locking member includes a locking member 29 installed on the T-shaped block 26, and both ends of the T-shaped groove 25 have a first mounting hole 27 and a second mounting hole 28. When the locking member 29 is inserted into the first mounting hole 27, the guiding wheel 2 is in the first working position 23, and when the locking member 29 is inserted into the second mounting hole 28, the guiding wheel 2 is in the second working position 24. The locking member 29 is a spring pin or a bolt.

[0067] Embodiment 3: A head device of a lawn mower, comprising: a head 22, and a mounting shell 1 connected to the head 22. The head 22 refers to Embodiment 1. The mounting shell 1 has a first working position 23 and a second working position 24; the head device of the lawn mower further comprises: a guiding wheel 2, and a locking member. When the guiding wheel 2 is in the first working position 23, the guiding wheel 2 is perpendicular or tends to be perpendicular to the rotation axis of the head 22, and when the guiding wheel 2 is in the second working position 24, the guiding wheel 2 is parallel or tends to be parallel to the rotation axis of the head 22.

[0068] The guiding wheel 2 has a guide wheel connecting member 31, and the guide wheel connecting member 31 is installed on the mounting shell 1 and can rotate relative to the mounting shell 1. The surfaces of the guide wheel connecting member 31 close to the mounting shell 1 are all inclined surfaces, and the inclined surface is 45 degrees. The rotation axis of the guide wheel connecting member 31 is inclined and the inclination angle is 45 degrees or tends to be 45 degrees. Preferably, it is 45 degrees. The end of the guide wheel connecting member 31 has a limiting head 32 with a T-shaped longitudinal section, and the limiting head 32 is located in the mounting shell 1 and can rotate relative to the mounting shell 1 to prevent the guide wheel connecting member 31 from separating from the mounting shell 1.

[0069] The locking member 29 can adopt a damping method, such as designing the limit head 32 as a damping shaft. The locking member 29 can also adopt a pin or a bolt, and lock holes are provided at positions corresponding to the first working position and the second working position on the mounting shell 1. The switching between the first working position and the second working position is achieved by rotating the guide wheel connecting member 180 degrees.

[0070] Additional note: In Embodiments 1-3, when the guide wheel 2 is in the first working position 23, the guide wheel 2 is used as a traveling wheel, and when in the second working position 24, the guide wheel 2 is used as a trimming wheel. The rotation axis of the machine head 22 can be understood as the output axis of the motor.

[0071] The above description is only some preferred embodiments of the present disclosure and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features having similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A head device of a lawn mower, comprising: The machine head, and the mounting shell connected to the machine head; It is characterized in that: The mounting shell has a first working position and a second working position; The machine head device of the lawn mower further includes: A guide wheel, detachably mounted on the first working position or the second working position of the mounting shell and capable of rotating relative to the mounting shell; When the guide wheel is in the first working position, the guide wheel is perpendicular or tends to be perpendicular to the rotation axis of the machine head. When the guide wheel is in the second working position, the guide wheel is parallel or tends to be parallel to the rotation axis of the machine head.

2. The nose device of the lawn mower according to claim 1, characterized in that: The guide wheel has a mounting portion; connection portions cooperating with the mounting portion are provided on both the first working position and the second working position, and the mounting portion is connected to the mounting shell or the connection portion through a locking member.

3. The head device of the lawn mower according to claim 2, characterized in that: The connection portion includes a connection shaft fixed to the mounting shell. The connection shaft protrudes radially outwards to form a first blocking portion. The locking member has a second blocking portion and a control portion, and the control portion can control the second blocking portion to be limited or disengaged from the first blocking portion.

4. The head device of the lawn mower according to claim 3, characterized in that: There are two locking members, namely a first locking member and a second locking member, which are arranged oppositely. A first reset structure is formed between the control portion of the first locking member and the second blocking portion of the second locking member, and a second reset structure is formed between the control portion of the second locking member and the second blocking portion of the first locking member; when the control portions of the first locking member and the second locking member move closer to each other, the second blocking portions of the first locking member and the second locking member move away from each other.

5. The head device of the lawn mower according to claim 4, characterized in that: The first reset structure and / or the second reset structure is a spring or an elastic strip / sheet / plate structure.

6. The nose device of the lawn mower according to claim 4, characterized in that: A guide inclined surface is formed on the end surface of the first blocking portion away from the mounting shell.

7. The head device of the lawn mower according to claim 2, characterized in that: The connection portion has a connection block, a first connection hole is formed on the connection block, and a second connection hole is formed on the mounting shell. A bolt passes through the first connection hole and is connected to the second connection hole on the mounting shell.

8. A head device of a lawn mower, comprising: The machine head, and the mounting shell connected to the machine head; It is characterized in that: The mounting shell has a first working position and a second working position; The machine head device of the lawn mower further includes: A guide wheel, the guide wheel has a guide wheel connecting member, and the guide wheel connecting member is mounted on the mounting shell and drives the guide wheel to move to the first working position or the second working position through rotation and / or sliding and can rotate relative to the mounting shell; A locking member, arranged on the guide wheel connecting member and / or the mounting shell, capable of locking the guide wheel connecting member located in the first working position or the second working position; When the guide wheel is in the first working position, the guide wheel is perpendicular or tends to be perpendicular to the rotation axis of the machine head. When the guide wheel is in the second working position, the guide wheel is parallel or tends to be parallel to the rotation axis of the machine head.

9. The head device of a lawn mower according to claim 8, characterized in that: The mounting shell has a guiding structure, the guiding structure has a horizontal portion and a vertical portion, and the guide wheel connecting member slides on the guiding structure; when the guide wheel connecting member is located on the vertical portion, it is in the first working position, and when the guide wheel connecting member is located on the horizontal portion, it is in the second working position.

10. The nose device of the lawn mower according to claim 8, characterized in that: The guide wheel connecting member is rotatably connected to the mounting shell, and the rotation axis of the guide wheel connecting member is inclined and the inclination angle is 45 degrees or tends to be 45 degrees.

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