A gear box and a lawnmower

Abstract

The utility model provides a gear box and mower, include: casing, driving wheel, driving wheel is installed in the casing, and drive motor penetrates casing top and is connected in driving wheel, driven wheel, driven wheel and driving wheel engage in the casing, and blade subassembly penetrates casing bottom and is connected in driven wheel, wherein, the size of driven wheel is greater than the size of driving wheel, when drive motor drives driving wheel, driving wheel can drive driven wheel and blade subassembly rotate, and the rotating direction of driving wheel and driven wheel is opposite. The utility model has solved the technical problem that the conventional hand -held mower generally adopts brushless motor direct drive, and the whole machine weight leads to user push to be hard -working, and the operation convenience is poor.

Description

Technical Field

[0001] This utility model relates to the field of lawnmower technology, and more specifically, to a gearbox and a lawnmower. Background Technology

[0002] Currently, traditional push lawnmowers generally use a brushless motor direct drive system, and the motors used are relatively large. This design significantly increases the overall weight of the machine, requiring users to apply considerable pushing force when pushing it, resulting in labor-intensive operation and limiting the product's convenience and applicability.

[0003] The problem is that traditional push lawnmowers generally use brushless motors for direct drive, which makes the machine heavy and difficult for users to push, resulting in poor ease of operation. Summary of the Invention

[0004] This invention solves the technical problem of traditional push lawnmowers, which commonly use brushless motors for direct drive, resulting in heavy machines that are difficult for users to push and have poor operational convenience. This invention addresses this issue by setting up a drive wheel and a driven wheel, with the driven wheel being larger than the drive wheel. The smaller gear drives the larger gear, allowing for a smaller motor size, thus reducing the product weight and making it easier for users to push and operate.

[0005] To address the aforementioned problems, this utility model provides a gearbox, comprising: a housing; a drive wheel, which is installed inside the housing, and a drive motor passes through the top of the housing and is connected to the drive wheel; and a driven wheel, which meshes with the drive wheel inside the housing, and a blade assembly passes through the bottom of the housing and is connected to the driven wheel; wherein the size of the driven wheel is larger than the size of the drive wheel; when the drive motor drives the drive wheel, the drive wheel can drive the driven wheel and the blade assembly to rotate, and the rotation directions of the drive wheel and the driven wheel are opposite.

[0006] Compared with existing technologies, the technical advantages of this solution are as follows: the driven wheel is larger than the driving wheel, enabling a power amplification effect and thus increasing the processing capacity of the blade assembly without increasing the load on the drive motor. Furthermore, the power of the driving wheel is directly transmitted to the driven wheel, allowing the blade assembly to operate synchronously, resulting in a significant improvement in overall work efficiency. Simultaneously, the meshing of the driving and driven wheels within the housing further enhances power transmission efficiency, reduces energy loss, and enhances the operational stability of the device. It also simplifies the installation and disassembly of the gearbox, facilitating maintenance and replacement and reducing maintenance costs.

[0007] In one possible design, the housing includes a base and a top cover, which together form an installation space, in which a driven wheel and a driving wheel mesh. A drive motor passes through the top cover and is connected to the driving wheel; a blade assembly passes through the base and is connected to the driven wheel.

[0008] Compared to existing technologies, the technical advantages of this solution are as follows: The combined design of the base and top cover makes the entire gearbox more compact, effectively saving space and facilitating its installation and use in various application scenarios, meeting the equipment's space utilization requirements. Furthermore, the combination of the base and top cover provides better sealing performance, effectively preventing dust, dirt, and other external substances from entering the internal mechanical parts, extending the gearbox's service life and improving operational reliability. It also makes the gearbox structure clearer, allowing users to easily open the top cover for inspection and maintenance. Maintenance work does not require disassembling the entire device, reducing operational complexity and time costs. The meshing of the driving and driven gears within the installation space makes gear transmission smoother, effectively reducing vibration and noise during operation and providing a more comfortable operating environment.

[0009] In one possible design, the top cover is mounted to the base by several first fasteners, and the top cover is fixed to the drive motor.

[0010] Compared with existing technologies, the technical advantages of this solution are as follows: Using multiple primary fasteners to firmly secure the top cover to the base improves the overall structural strength, ensuring the top cover will not loosen due to vibration or impact during operation, thus enhancing equipment reliability. When motor replacement or internal inspection is required, operators can quickly disassemble the top cover without additional complex procedures. Fixing the top cover to the drive motor prevents displacement or loosening of the top cover due to motor vibration during operation, thereby improving the overall safety performance of the equipment and reducing potential failure risks.

[0011] In one possible design, the drive motor includes a drive shaft, with a driving wheel located at one end of the drive shaft near the driven wheel, and the drive shaft is capable of driving the driving wheel to rotate.

[0012] Compared to existing technologies, this technical solution achieves the following advantages: by directly connecting the drive shaft of the drive motor to the drive wheel, a complex transmission mechanism is avoided, thus simplifying the overall drive system structure. This simplification helps reduce potential failure points and improves the stability and reliability of the equipment. The direct connection between the drive shaft and the drive wheel reduces energy loss during transmission, improving transmission efficiency. Furthermore, arranging the drive motor, drive shaft, and drive wheel together effectively reduces the overall space required for the equipment, resulting in a more compact setup. Simultaneously, the close drive relationship enables faster start-up and stop response times. This enhances the flexibility and adaptability of the equipment.

[0013] In one possible design, the top cover has a through-hole through which the drive shaft is inserted into the housing.

[0014] Compared with existing technologies, the technical advantages of this solution are as follows: the through-hole allows the drive shaft to rotate freely and unrestricted within the housing, greatly improving its rotational flexibility. The through-hole separates the drive shaft from the housing, preventing direct contact and reducing friction and wear. Simultaneously, the through-hole allows the drive shaft to be directly inserted into the housing from the top cover, making equipment assembly and installation more convenient and efficient. Furthermore, heat within the housing can be dissipated through the through-hole, reducing heat accumulation caused by friction and increasing the gearbox's heat dissipation.

[0015] In one possible design, the blade assembly includes a driven shaft and a rotating blade, with the rotating blade fixed to one end of the driven shaft and a driven wheel sleeved on the other end of the driven shaft; wherein, when the driving wheel drives the driven wheel to rotate, the driven shaft can drive the rotating blade to rotate.

[0016] Compared to existing technologies, the technical advantages of this solution are as follows: Through the direct connection between the driving and driven wheels, the driven shaft can more effectively receive power and drive the rotating blades. This simplified power transmission path reduces energy loss, making the equipment more efficient during operation. Compared to traditional multi-stage transmission mechanisms, this setup reduces the need for complex components such as gears and chains, simplifying the mechanical structure. This not only reduces manufacturing costs but also lowers the overall failure rate.

[0017] In one possible design, the blade assembly also includes a bearing seat that is sleeved on the driven shaft and positioned between the driven wheel and the rotating blade; wherein, when the blade assembly is mounted in the housing, the bearing seat is mounted on the base near the driven wheel.

[0018] Compared with existing technologies, the technical advantages of this solution are as follows: the bearing seat can support the driven shaft, which effectively improves the rigidity and stability of the driven shaft. Furthermore, this structure reduces the vibration of the rotating blade during rotation, ensuring the blade maintains good balance during operation and thus improving cutting quality. Simultaneously, the bearing seat optimizes the movement relationship between the driven wheel, driven shaft, rotating blade, and housing, thereby improving transmission efficiency.

[0019] In one possible design, the blade assembly also includes a retaining head located at the end of the driven shaft away from the rotating blade.

[0020] Compared with existing technologies, the technical effects achieved by this solution are as follows: By setting a fixing head at the end of the driven shaft away from the blade, the overall structural rigidity of the blade assembly can be improved, reducing instability caused by vibration or impact during operation and ensuring the connection stability between the blade assembly and the housing. Simultaneously, the presence of the fixing head allows for more even load distribution, improving the stress on the driven shaft and ensuring that the rotating blade receives more stable and sustained power during cutting, resulting in a more efficient and consistent cutting process.

[0021] In one possible design, the top cover has a fixed mounting position on the side near the driven wheel, and the fixing head is installed in the fixed mounting position when the driven shaft is installed in the housing.

[0022] Compared to existing technologies, this technical solution achieves the following advantages: By setting a fixed mounting position on the top cover, the fixed head can be ensured to maintain a stable position during the installation of the driven shaft. This also effectively reduces installation errors and improves the stability and reliability of the entire structure. Furthermore, the fixed mounting position makes the installation of the driven shaft more convenient. Operators can perform installation more intuitively and quickly, reducing reliance on installation techniques and thus improving work efficiency.

[0023] This application also provides a lawnmower in which a gearbox is applied.

[0024] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The lawnmower of this application includes the gearbox of any technical solution of this application, and therefore has all the beneficial effects of the gearbox of any technical solution of this application, which will not be repeated here. Attached Figure Description

[0025] Figure 1 A schematic diagram of the structure of a gearbox provided for an embodiment of this utility model. Figure 1 ;

[0026] Figure 2 A schematic diagram of the structure of a gearbox provided for an embodiment of this utility model. Figure 2 ;

[0027] Figure 3 A schematic diagram of the structure of a gearbox provided for an embodiment of this utility model. Figure 3 ;

[0028] Figure 4 A schematic diagram of the structure of a gearbox provided for an embodiment of this utility model. Figure 4 ;

[0029] Figure 5 A schematic diagram of the structure of a gearbox provided for an embodiment of this utility model. Figure 5 ;

[0030] Figure 6 A schematic diagram of the structure of a gearbox provided for an embodiment of this utility model. Figure 6 ;

[0031] Figure 7 A schematic diagram of the structure of a gearbox provided for an embodiment of this utility model. Figure 7 ;

[0032] Figure 8 A schematic diagram of the structure of a gearbox provided for an embodiment of this utility model. Figure 8 .

[0033] Explanation of reference numerals in the attached figures:

[0034] 11-Housing; 12-Driving wheel; 13-Drive motor; 14-Driven wheel; 15-Blade assembly; 16-Base; 17-Top cover; 19-Drive shaft; 20-Through hole; 21-Driven shaft; 22-Rotating blade; 23-Shaft seat; 24-Fixed head; 25-Fixed mounting position. Detailed Implementation

[0035] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0036] See Figures 1 to 8 This utility model provides a gearbox, including: a housing 11; a drive wheel 12, which is installed inside the housing 11, and a drive motor 13 passes through the top of the housing 11 and is connected to the drive wheel 12; a driven wheel 14, which meshes with the drive wheel 12 inside the housing 11, and a blade assembly 15 passes through the bottom of the housing 11 and is connected to the driven wheel 14; wherein, the size of the driven wheel 14 is larger than the size of the drive wheel 12; when the drive motor 13 drives the drive wheel 12, the drive wheel 12 can drive the driven wheel 14 and the blade assembly 15 to rotate, and the rotation directions of the drive wheel 12 and the driven wheel 14 are opposite.

[0037] Specifically, traditional push lawnmowers typically use brushless motors with an outer diameter of approximately 100 mm, making the entire product very heavy and requiring considerable effort to push. In this embodiment, a drive motor 13 with an outer diameter of 63 mm, specifically a BL63 model brushless motor, is used. Using a lighter and smaller drive motor 13 reduces the weight of the lawnmower, making it easier for the user to push. Simultaneously, to ensure stable output torque, in this embodiment, the driven wheel is larger than the drive wheel, with a small gear driving a large gear to ensure stable torque output. The drive wheel 12 and driven wheel 14 mesh within the housing 11. The drive motor 13 passes through the housing 11 and connects to the drive wheel 12. The blade assembly 15 passes through the bottom of the housing 11 and connects to the driven wheel 14. When the drive motor 13 drives the drive wheel 12 to rotate, the clockwise rotation of the drive wheel 12 causes the driven wheel 14 to rotate counterclockwise. The combination of a small gear driving a large gear, and the two gears rotating in opposite directions, makes the torque output of the motor more stable, thereby increasing the efficiency of power transmission and ensuring the stability of the gearbox.

[0038] In one embodiment of this application, the housing 11 includes a base 16 and a top cover 17, which together form an installation space. The driven wheel 14 meshes with the driving wheel 12 within the installation space. A drive motor 13 passes through the top cover 17 and is connected to the driving wheel 12. A blade assembly 15 passes through the base 16 and is connected to the driven wheel 14.

[0039] Specifically, in this embodiment, the housing 11 of the gearbox includes a base 16 and a top cover 17, wherein the size of the top cover 17 is smaller than the size of the base 16, and the top cover 17 is fastened to the base 16, thereby forming an installation space between the base 16 and the top cover 17 for installing and fixing the drive wheel 12 and the driven wheel 14.

[0040] In one embodiment of this application, the top cover 17 is mounted on the base 16 by a plurality of first fasteners, and the top cover 17 is fixed to the drive motor 13.

[0041] Specifically, the top cover 17 is located near the drive motor 13, and the base 16 is located near the blade assembly 15. The top cover 17 is mounted on the base 16 using four first fasteners. In this embodiment, the top cover 17 is integrally formed with the housing of the drive motor 13. In another embodiment, the top cover 17 is fixed to the housing of the drive motor 13 using several second fasteners (not shown). The top cover 17 connects both the drive motor 13 and the blade assembly 15, indirectly fixing them together. Furthermore, the fixing with the first and second fasteners prevents the top cover from shifting or loosening due to vibration during motor operation.

[0042] In one embodiment of this application, the drive motor 13 includes a drive shaft 19, and a drive wheel 12 is disposed at one end of the drive shaft 19 near the driven wheel 14. The drive shaft 19 is capable of driving the drive wheel 12 to rotate.

[0043] Specifically, in this embodiment, the drive shaft 19 and the drive wheel 12 are integrally formed, with the drive wheel 12 located at the end of the drive shaft 19 near the driven wheel 14. When the drive motor 13 drives the drive shaft 19 to rotate, the drive wheel 12 can drive the driven wheel 14 to rotate in the opposite direction to the rotation of the drive shaft 19. The integral forming of the drive shaft 19 and the drive wheel 12 improves the stability and reliability of the equipment and helps reduce potential failure points.

[0044] In one embodiment of this application, the top cover 17 is provided with a through hole 20, through which the drive shaft 19 is inserted into the housing 11.

[0045] Specifically, in this embodiment, the through hole 20 provided on the top cover 17 is a circular through hole, through which the drive shaft 19 can be inserted into the housing 11, so that the driving wheel 12 and the driven wheel 14 mesh. The through hole 20 can prevent the drive shaft 19 from affecting the top cover 17 when it rotates.

[0046] In one embodiment of this application, the blade assembly 15 includes a driven shaft 21 and a rotating blade 22. The rotating blade 22 is fixed to one end of the driven shaft 21, and the driven wheel 14 is sleeved on the other end of the driven shaft 21. When the driving wheel 12 drives the driven wheel 14 to rotate, the driven shaft 21 can drive the rotating blade 22 to rotate.

[0047] Specifically, in this embodiment, the driven shaft 21 is used to connect the rotating blade 22 and the driven shaft 21. The rotation of the driven shaft 21 can drive the rotating blade 22 to rotate. The rotating blade 22 is specifically provided with two blades arranged opposite each other. When rotating, the blades can generate shearing force, thereby achieving the effect of weeding.

[0048] In one embodiment of this application, the blade assembly 15 further includes a bearing seat 23, which is sleeved on the driven shaft 21 and disposed between the driven wheel 14 and the rotating blade 22; wherein, when the blade assembly 15 is installed on the housing 11, the bearing seat 23 is installed on the base 16 on the side near the driven wheel 14.

[0049] Specifically, in this embodiment, the bearing seat 23 is sleeved between the driven wheel 14 and the base 16. The bearing seat 23 can provide fixation and support for the driven wheel 14, ensuring that the driven wheel 14 remains stable during operation.

[0050] In one embodiment of this application, the blade assembly 15 further includes a retaining head 24 disposed at the end of the driven shaft 21 away from the rotating blade 22.

[0051] Specifically, in this embodiment, the fixing head 24 is disposed at the end of the driven shaft 21 away from the rotating blade 22, and the fixing head 24 contacts the driven wheel 14. The fixing head 24 improves the overall structural rigidity of the blade assembly 15 and increases the stability of the driven shaft 21 during rotation.

[0052] In one embodiment of this application, a fixed mounting position 25 is provided on the side of the top cover 17 near the driven wheel 14. When the driven shaft 21 is installed on the housing 11, the fixing head 24 is installed in the fixed mounting position 25.

[0053] Specifically, in this embodiment, a fixed mounting position 25 is provided on the side of the top cover 17 near the driven wheel 14. The fixed mounting position 25 is used to install and fix the fixing head 24 of the driven shaft 21. By restricting the fixing head 24, the driven shaft 21 can remain stable during rotation; at the same time, the setting of the fixing head can control the force on the driven shaft 21, ensuring that the rotating blade 22 can output stably and continuously, so that the cutting efficiency of the rotating blade 22 remains consistent.

[0054] This application also provides a lawnmower in which a gearbox is applied.

[0055] Specifically, the lawnmower of this application includes the gearbox of any of the technical solutions of this application, and therefore has all the beneficial effects of the gearbox of any of the technical solutions of this application, which will not be repeated here.

[0056] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A gearbox, characterized in that, include: Shell (11); The drive wheel (12) is installed inside the housing (11), and the drive motor (13) passes through the top of the housing (11) and is connected to the drive wheel (12). Driven wheel (14), which meshes with the driving wheel (12) inside the housing (11), and blade assembly (15) passes through the bottom of the housing (11) and is connected to the driven wheel (14). The driven wheel (14) is larger than the driving wheel (12). When the drive motor (13) drives the driving wheel (12), the driving wheel (12) can drive the driven wheel (14) and the blade assembly (15) to rotate, and the driving wheel (12) and the driven wheel (14) rotate in opposite directions.

2. The gearbox according to claim 1, characterized in that, The housing (11) includes a base (16) and a top cover (17), the base (16) and the top cover (17) are combined to form an installation space, and the driven wheel (14) meshes with the driving wheel (12) in the installation space; The drive motor (13) passes through the top cover (17) and is connected to the drive wheel (12); the blade assembly (15) passes through the base (16) and is connected to the driven wheel (14).

3. The gearbox according to claim 2, characterized in that, The top cover (17) is mounted on the base (16) by several first fasteners, and the top cover (17) is fixed to the drive motor (13).

4. The gearbox according to claim 2, characterized in that, The drive motor (13) includes a drive shaft (19), and the drive wheel (12) is located at one end of the drive shaft (19) near the driven wheel (14). The drive shaft (19) can drive the drive wheel (12) to rotate.

5. The gearbox according to claim 4, characterized in that, The top cover (17) is provided with a through hole (20), and the drive shaft (19) is inserted into the housing (11) through the through hole (20).

6. The gearbox according to claim 2, characterized in that, The blade assembly (15) includes a driven shaft (21) and a rotating blade (22), the rotating blade (22) being fixed to one end of the driven shaft (21), and the driven wheel (14) being sleeved on the other end of the driven shaft (21); When the driving wheel (12) drives the driven wheel (14) to rotate, the driven shaft (21) can drive the rotating blade (22) to rotate.

7. The gearbox according to claim 6, characterized in that, The blade assembly (15) further includes a bearing seat (23), which is sleeved on the driven shaft (21) and is disposed between the driven wheel (14) and the rotating blade (22); When the blade assembly (15) is mounted on the housing (11), the bearing seat (23) is mounted on the base (16) on the side near the driven wheel (14).

8. The gearbox according to claim 6, characterized in that, The blade assembly (15) also includes a retaining head (24) disposed at one end of the driven shaft (21) away from the rotating blade (22).

9. The gearbox according to claim 8, characterized in that, The top cover (17) has a fixed mounting position (25) on the side near the driven wheel (14). When the driven shaft (21) is installed on the housing (11), the fixing head (24) is installed in the fixed mounting position (25).

10. A lawnmower, characterized in that, The gearbox as described in any one of claims 1-9 is applied to the lawnmower.

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