Lawn mower

Abstract

The utility model belongs to the technical field of mowers, and particularly relates to a mower, which comprises a handle and a driving device, the driving device comprises a motor casing, a motor and a control panel, the rear end of the motor casing is provided with a power supply mounting position, is connected with the control panel through an electric wire and controls a motor switch, the front end of the motor is connected with an output shaft, and the handle is provided with a transmission rod. The rear end of the handle is provided with a connecting part, the rear end of the connecting part is provided with a clamping part, the front end of the motor shell is provided with a clamping groove, the clamping part and the clamping groove are clamped to fix the handle and the motor shell, and it is ensured that connection is stable and durable. The handle is fixed by the clamping part and the clamping groove, front-back movement and left-right rotation are prevented, the stability of the mower and the safety of a user are guaranteed, the handle and the driving device are detachable, the overall length is reduced, and transportation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of lawn mowers, in particular to a lawn mower. Background Art

[0002] As an indispensable tool in landscaping, the main function of a lawn mower is to finely trim the lawn, effectively removing weeds and greatly reducing the burden of manual trimming. It is both convenient and labor-saving. However, there is a design problem with lawn mowers in this field. The control handle and motor housing are often designed as a whole to reduce the probability of looseness and failure between components. However, this integrated design also brings some negative effects, especially during the assembly and maintenance of the lawn mower. Because the handle and motor housing are tightly integrated, any situation that requires separate replacement or adjustment of these two parts becomes quite complicated and time-consuming. Once a local problem occurs, the entire device needs to be disassembled, which is undoubtedly very inefficient. Moreover, during the disassembly and assembly process, it is easy to cause new problems due to misoperation. This not only increases the difficulty of repair, but also increases maintenance costs, which is extremely burdensome for users and is not conducive to use. Summary of the Invention

[0003] The purpose of the utility model is to design a set of special heat dissipation channels so that the airflow can flow through the surface of the controller and the interior of the motor in an all-round way, thereby enhancing the reliability and stability of the machine.

[0004] The purpose of the utility model is to avoid the defect of the cantilever arm of the large gear, design a more reasonable process and a fixed structural design at both ends, and add high-speed rotating bearings at both ends of the large gear, thereby upgrading the high-speed rotation of the large gear and making the transmission more stable and reliable.

[0005] The purpose of the utility model is to provide a simple structure, in which the handle and the motor housing are separated and relatively independent of each other, and the operation of the handle is simple and quick, avoiding the tedious operation process. It has strong maintainability and stability.

[0006] The purpose of this utility model is to design and implement a lawn mower with a simple and clear structure and easy operation. The handle and motor housing of this machine adopt an innovative separation design, making the connection between the two more stable and reliable. This design not only simplifies the structure of the machine, making maintenance and operation easier, but also ensures that the connection between the two will not easily loosen during use, thereby significantly improving the stability and service life of the machine. Overall, this design is both practical and efficient, meeting the needs of users for a high-efficiency and easy-to-use lawn mower.

[0007] The purpose of this utility model is achieved in this way:

[0008] A lawn mower comprises a handle and a driving device arranged behind the handle, the driving device comprises a motor housing, a motor arranged in the motor housing and a control board, a power supply installation position is provided at the rear end of the motor housing, the power supply installation position is electrically connected to the control board, and the control board can control the motor switch, the front end of the motor is provided with an output shaft, the handle is provided with a transmission rod, the rear end of the transmission rod is passed through the motor housing and connected to the output shaft, the rotation of the motor drives the output shaft to rotate, thereby driving the cutting assembly to rotate through the transmission rod to complete mowing, the rear end of the handle is provided with a connecting part, the rear end of the connecting part is protruding with a clamping part, the front end of the motor housing is provided with a plurality of clamping grooves, the clamping part is clamped with the clamping grooves, and the handle is clamped to the motor housing through the clamping part and the clamping groove.

[0009] Furthermore, a clamping hole is provided at the front end of the motor housing, the clamping groove is arranged around the rear of the clamping hole, and the clamping portion passes through the clamping hole and is connected to the clamping groove.

[0010] Furthermore, a connecting hole is provided at the front end of the motor housing, and a transmission rod is passed through the connecting hole. A fixing portion is provided in the motor housing, and the fixing portion is sleeved on the transmission rod and squeezes and locks the transmission rod so that the transmission rod is fixedly connected to the motor housing.

[0011] Furthermore, the control panel is located below the motor, an air passage is provided inside the motor housing, the control panel is located in the air passage, the motor is located on the side of the air passage, a plurality of air inlets are provided at the rear end and the lower end of the motor housing, and air outlets are provided at the upper end and the side of the motor housing. The control panel is located near the air inlet of the motor housing, and the motor is located near the air outlet, driving the motor housing to generate airflow, so that the airflow in the air passage is circulated outside.

[0012] Furthermore, an extension rod is provided at the front end of the transmission rod, and the transmission rod can be connected to the cutting assembly through the extension rod. A connecting piece is provided between the extension rod and the transmission rod, and locking pieces are provided at the upper and lower ends of the connecting piece. A knob is provided on the outside of the locking piece. Turning the knob can drive the locking piece to rotate to loosen or lock, and the knob is used to control the connecting piece to lock or loosen the extension rod and the transmission rod.

[0013] Furthermore, a first fixing hole is provided at the lower end of the transmission rod, a second fixing hole is provided at the upper end of the extension rod, and a first fixing member and a second fixing member adapted to the first fixing hole and the second fixing hole are provided on the connecting member. The front end of the first fixing member is passed through the first fixing hole, and the second fixing member is passed through the second fixing hole, and the position between the extension rod and the transmission rod is simultaneously limited by the first fixing member and the second fixing member.

[0014] Furthermore, a transmission shaft is provided in the transmission rod, and an extension shaft is provided in the extension rod. The upper end of the transmission shaft is connected to the output shaft, and the lower end is connected to the extension shaft. A bearing is provided between the transmission shaft and the extension shaft, and a transmission part is provided on the bearing. The transmission part is exposed on both sides of the bearing, and extension grooves and transmission grooves are provided at both ends of the transmission part. The transmission groove is connected to the lower end of the transmission shaft, and the extension groove is connected to the upper end of the extension shaft. When the transmission shaft rotates, the extension shaft is driven to rotate through the transmission part.

[0015] Furthermore, a protective sleeve is provided on the outer ring of the bearing, and the protective sleeve is sleeved on the bearing. The outer side of the protective sleeve abuts against the inner wall of the connecting piece, and the protective sleeve can be squeezed when the connecting piece is locked.

[0016] Furthermore, the protective cover is made of rubber.

[0017] Furthermore, the transmission rod upper cover is provided with an auxiliary handle, and a baffle is provided on one side or both sides of the auxiliary handle, and the baffle protrudes from the transmission rod and extends outward.

[0018] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0019] The purpose of the present invention is to provide a connection structure between a lawn mower and a handle, which has a simple structure, is easy to operate, has a good effect when mowing, can be flexibly applied, and is easy to carry. The structure includes a handle and a drive device located behind the handle, and the drive device is composed of a motor housing, a motor installed in the motor housing, and a control board. A power supply installation is provided at the rear end of the motor housing, and the power supply installation and the control board are connected together by wires. The control board can control the switch of the motor. The front end of the motor is connected to an output shaft. A transmission rod is provided on the handle. The rear end of the transmission rod passes through the motor housing and is connected to the output shaft. When the motor rotates, it drives the output shaft to rotate, and then drives the cutting assembly to rotate through the transmission rod, thereby completing the work of mowing the lawn. A connecting portion is also provided at the rear end of the handle. The rear end of the connecting portion is protruding with a snap-fitting portion. A plurality of snap-fitting grooves are provided at the front end of the motor housing. The snap-fitting portion is snap-fitted with the snap-fitting groove, so that the handle can be connected to the motor housing through the snap-fitting portion and the snap-fitting groove, and the snap-fitting portion and the snap-fitting groove fit tightly. , connect the handle and the motor housing together and fix them firmly, ensuring the stability and durability of the connection. During use, the handle is tightly fixed by the clamping part and the clamping groove, which not only prevents the front and back movement during use, but also avoids the possibility of left and right rotation. When operating, the user does not need to worry about the lawn mower moving or rotating unexpectedly, so that the performance of the lawn mower is well guaranteed during operation, making the lawn mower more stable, thereby ensuring the safety of the user, and during transportation, the handle and the drive device can be relatively disassembled and packed separately. This design greatly reduces the overall length of the lawn mower, making transportation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the present utility model.

[0021] Figure 2 It is a cross-sectional view of the present utility model.

[0022] Figure 3 yes Figure 2 Enlarged view of point B in the middle.

[0023] Figure 4 yes Figure 2 Enlarged view of point C in the middle.

[0024] Figure 5 It is a structural schematic diagram of the utility model with half of the motor housing removed.

[0025] Figure 6 yes Figure 5 Enlarged view of point D in the middle

[0026] Figure 7 It is a structural diagram of the handle and half of the motor of the utility model.

[0027] Figure 8 This is one of the structural diagrams of the motor housing of the present utility model.

[0028] Figure 9 This is the second structural diagram of the motor housing of the present invention.

[0029] Figure 10 It is a structural diagram of the connecting piece of the utility model.

[0030] Figure 11 It is a structural schematic diagram of the transmission rod and the extension rod of the utility model.

[0031] Figure 12 yes Figure 10 Enlarged view of point E in the middle.

[0032] Figure 13 It is a schematic diagram of the connection structure of the bearing, transmission member and protective sleeve of the utility model.

[0033] Figure 14 It is a cross-sectional view of the bearing, transmission part and protective sleeve of the utility model.

[0034] Figure 15 It is a structural schematic diagram of the auxiliary handle of the utility model.

[0035] The meaning of the numbers in the figure:

[0036] 1-handle; 2-drive device; 3-motor housing; 4-motor; 5-control board; 6-power supply installation; 7-output shaft; 8-drive rod; 9-connecting part; 10-clamping part;

[0037] 11-card slot; 12-card hole; 13-connecting hole; 14-fixing part; 16-air inlet; 17-air outlet; 18-extension rod; 19-connecting piece; 20-locking piece;

[0038] 21 - knob; 22 - first fixing hole; 23 - second fixing hole; 24 - first fixing member; 25 - second fixing member; 26 - transmission shaft; 27 - extension shaft; 28 - bearing; 29 - transmission member; 30 - extension slot;

[0039] 31- transmission groove; 32- protective cover; 33- auxiliary handle; 34- baffle. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with specific embodiments:

[0041] A lawn mower comprises a handle 1 and a drive device 2 arranged behind the handle 1, the drive device 2 comprises a motor housing 3, a motor 4 and a control board 5 arranged in the motor housing 3, a power supply installation place 6 is provided at the rear end of the motor housing 3, the power supply installation place 6 is electrically connected to the control board 5, and the control board 5 can control the switch of the motor 4, the front end of the motor 4 is provided with an output shaft 7, the handle 1 is provided with a transmission rod 8, the rear end of the transmission rod 8 is passed through the motor housing 3 and is connected to the output shaft 7, the rotation of the motor 4 drives the output shaft 7 to rotate, thereby driving the cutting assembly to rotate through the transmission rod 8 to complete mowing, the rear end of the handle 1 is provided with a connecting part 9, the rear end of the connecting part 9 is protruding with a clamping part 10, the front end of the motor housing 3 is provided with a plurality of clamping grooves 11, the clamping part 10 is clamped with the clamping groove 11, and the handle 1 is mutually clamped to the motor housing 3 through the clamping part 10 and the clamping groove 11.

[0042] The purpose of the present invention is to provide a connection structure of a lawn mower and a handle 1 that is simple in structure, easy to operate, has good mowing effect, can be flexibly applied, and is easy to carry. The structure comprises a handle 1 and a drive device 2 located behind the handle 1. The drive device 2 comprises a motor housing 3, a motor 4 installed in the motor housing 3, and a control panel 5. A power supply installation portion 6 is provided at the rear end of the motor housing 3. The power supply installation portion 6 and the control panel 5 are connected together by wires. The control panel 5 can control the switching of the motor 4. The front end of the motor 4 is connected to an output shaft 7. A transmission rod 8 is provided on the handle 1. The rear end of the transmission rod 8 passes through the motor housing 3 and is connected to the output shaft 7. When the motor 4 rotates, it drives the output shaft 7 to rotate, and then drives the cutting assembly to rotate through the transmission rod 8, thereby completing the mowing task. The rear end of the handle 1 is also provided with a connecting portion 9. The rear end of the connecting portion 9 is protruding with a clamping portion 10. The front end of the motor housing 3 is provided with a plurality of clamping grooves 11. The clamping portion 10 is clamped with the clamping grooves 11, so that the handle 1 can be connected to the motor housing 3 through the clamping portion 10 and the clamping grooves 11. The clamping portion 10 and the clamping slot 11 fit tightly together, connecting the handle 1 and the motor housing 3 together and fixing them firmly, ensuring the stability and durability of the connection. During use, the handle 1 is tightly fixed by the clamping portion 10 and the clamping slot 11, which not only prevents the handle 1 from moving forwards and backwards during use, but also avoids the possibility of left and right rotation. When operating, the user does not need to worry about the lawn mower moving or rotating unexpectedly, so that the performance of the lawn mower is well guaranteed during operation, making the lawn mower more stable, thereby ensuring the safety of the user, and during transportation, the handle 1 and the drive device 2 can be relatively disassembled and packed separately. This design greatly reduces the overall length of the lawn mower, making transportation more convenient.

[0043] Preferably, a snap-in hole 12 is provided at the front end of the motor housing 3, and the snap-in groove 11 is arranged behind the snap-in hole 12. The snap-in portion 10 is passed through the snap-in hole 12 and connected to the snap-in groove 11. A snap-in hole 12 is provided at the top of the motor housing 3, and the snap-in hole 12 is located at the front end of the motor housing 3. One end of the snap-in portion 10 passes through the snap-in hole 12 and forms a firm connection with the snap-in groove 11, so that the motor housing 3 remains light and portable while also enhancing the connection stability between it and the snap-in portion 10, thereby improving the overall service life and reliability.

[0044] Preferably, a connecting hole 13 is provided at the front end of the motor housing 3, and the transmission rod 8 is passed through the connecting hole 13. A fixing portion 14 is provided in the motor housing 3, and the fixing portion 14 is sleeved on the transmission rod 8 and squeezes and locks the transmission rod 8 so that the transmission rod 8 is fixedly connected to the motor housing 3. The connection hole 13 is provided so that the transmission rod 8 can smoothly pass through the motor housing 3 and be connected to the drive device 2. Through the connection between the fixing portion 14 and the rotating rod, the connection between the transmission rod 8 and the motor housing 3 is tighter, thereby improving the stability of the entire structure. The motor housing 3 is firmly fixed during operation, strengthening the connection between the transmission rod 8 and the motor housing 3, and ensuring that their fixation will not loosen due to external interference.

[0045] Preferably, the control panel 5 is located below the motor 4, and an air passage is provided inside the motor housing 3. The control panel 5 is located in the air passage, and the motor 4 is located on the side of the air passage. A plurality of air inlets 16 are provided at the rear end and the lower end of the motor housing 3 so that cool air flows into the motor housing 3 from the air inlet 16. Air outlets 17 are provided at the upper end and the side of the motor housing 3 so that hot air flows out of the motor housing 3 from the air outlet 17. The control panel 5 is located near the air inlet 16 of the motor housing 3, and the motor 4 is located near the air outlet 17, driving the motor housing 3 to generate airflow so that the airflow in the air passage circulates outside. There are fan blades on the motor 4. When rotating at high speed, it generates strong suction and wind flow. The control board 5 is located at the position of the motor housing 3 near the air inlet 16, which can make the wind flow pass through the four sides of the controller in front, behind, left and right, and dissipate the heat of the controller very well. The motor 4 is located near the air outlet 17. Through the operation of the motor 4, the rotation of the motor 4 can generate wind flow, and then the wind flow in the air passage can be circulated externally, and the motor 4 is also very good at dissipating heat, thereby achieving the purpose of improving the heat dissipation efficiency, making it less likely for the utility model to stop or burn out due to excessive temperature when in use, and making the machine work more stable and the performance more reliable.

[0046] Preferably, the front end of the transmission rod 8 is provided with an extension rod 18, and the transmission rod 8 can be connected to the cutting assembly through the extension rod 18. A connecting piece 19 is provided between the extension rod 18 and the transmission rod 8. The upper and lower ends of the connecting piece 19 are provided with locking pieces 20. The outer side of the locking piece 20 is provided with a knob 21. Turning the knob 21 can drive the locking piece 20 to rotate, loosen or lock. The connecting piece 19 is controlled by the knob 21 to lock or loosen the extension rod 18 and the transmission rod 8. A connecting piece 19 is provided between the extension rod 18 and the transmission rod 8. This connecting piece 19 acts as a bridge, so that the two can They are connected together more firmly. When a longer length is required, the extension rod 18 and the transmission rod 8 are connected through the connecting piece 19 to achieve the extension of the whole machine, so that it can maintain efficient and stable working performance under different environments and conditions. The upper and lower ends of the connecting piece 19 are provided with locking pieces 20. The locking piece 20 can ensure that the connecting piece 19 will not loosen during the transmission process, thereby ensuring the stability and safety of the entire transmission process. The user can control the rotation of the locking piece 20 by rotating this knob 21, thereby achieving the locking or loosening of the extension rod 18 and the transmission rod 8.

[0047] Preferably, the lower end of the transmission rod 8 is provided with a first fixing hole 22, the upper end of the extension rod 18 is provided with a second fixing hole 23, and the connecting member 19 is provided with a first fixing member 24 and a second fixing member 25 adapted to the first fixing hole 22 and the second fixing hole 23. The front end of the first fixing member 24 is passed through the first fixing hole 22, and the second fixing member 25 is passed through the second fixing hole 23. The position between the extension rod 18 and the transmission rod 8 is simultaneously limited by the first fixing member 24 and the second fixing member 25. Through the joint action of the first fixing member 24 and the second fixing member 25, not only can the relative position between the extension rod 18 and the transmission rod 8 be effectively limited, but the extension rod 18 and the transmission rod 8 cannot be pulled out, and cannot be rotated left or right, thereby ensuring its stability during use, making the lawn mower more stable and more reliable during operation.

[0048] Preferably, a transmission shaft 26 is provided in the transmission rod 8, and an extension shaft 27 is provided in the extension rod 18. The upper end of the transmission shaft 26 is connected to the output shaft 7, and the lower end is connected to the extension shaft 27. A bearing 28 is provided between the transmission shaft 26 and the extension shaft 27. A transmission member 29 is provided on the bearing 28. The transmission member 29 is exposed on both sides of the bearing 28. An extension groove 30 and a transmission groove 31 are opened at both ends of the transmission member 29. The transmission groove 31 is connected to the lower end of the transmission shaft 26, and the extension groove 30 is connected to the upper end of the extension shaft 27. When the transmission shaft 26 rotates, the extension shaft 27 is driven to rotate by the transmission member 29. When the transmission shaft 26 starts to rotate, the extension shaft 27 can also rotate accordingly through the transmission action of the transmission member 29. This design allows power to be transmitted from the transmission shaft 26 to the extension shaft 27, and when the transmission shaft 26 rotates, the extension shaft 27 can also rotate synchronously, thereby achieving the extension and expansion of power. This design greatly improves the flexibility and efficiency of the transmission mechanism, allowing power to be transmitted over longer distances while also improving the operating convenience of the equipment.

[0049] Preferably, a protective sleeve 32 is provided on the outer ring of the bearing 28, and the protective sleeve 32 is sleeved on the bearing 28. The outer side of the protective sleeve 32 abuts against the inner wall of the connecting piece 19. The connecting piece 19 can squeeze the protective sleeve 32 when it is locked. When the connecting piece 19 is locked, pressure can be applied to the protective sleeve 32 to cause it to deform. The bearing 28 can be more thoughtfully and effectively protected to prevent damage caused by external factors, thereby extending the service life of the shaft 27 bearing. When the quick head is locked, the protective sleeve 32 will automatically produce corresponding deformation, so that the concentricity of the bearing 28, the transmission rod 8 and the extension rod 18 is further guaranteed, making the transmission smoother and more stable.

[0050] Preferably, the protective sleeve 32 is made of rubber. Rubber offers excellent elasticity and adaptability, effectively absorbing and dispersing external impact forces, thereby providing a more robust protective barrier for the bearing 28. The rubber protective sleeve 32 is also wear-resistant and aging-resistant, maintaining its performance under various environmental conditions and ensuring long-term reliability. Furthermore, rubber is easy to process and can be formed into various complex shapes to accommodate different bearing 28 designs and size requirements.

[0051] Preferably, the transmission rod 8 is covered with an auxiliary handle 33, which is located above the transmission rod 8 for the user to grasp. A baffle 34 is provided on one side or both sides of the auxiliary handle 33, which protrudes from the transmission rod 8 and extends outward. When the baffle 34 is provided on the auxiliary handle 33, when danger occurs, it can firmly block people behind it, preventing people from leaning forward or falling when in danger, thereby improving the safety and convenience of operation.

[0052] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lawn mower, characterized in that: The invention comprises a handle (1) and a driving device (2) arranged at the rear of the handle (1), wherein the driving device (2) comprises a motor housing (3), a motor (4) arranged in the motor housing (3) and a control panel (5), a power supply installation portion (6) is provided at the rear end of the motor housing (3), the power supply installation portion (6) and the control panel (5) are electrically connected, and the control panel (5) can control the switching of the motor (4), an output shaft (7) is provided at the front end of the motor (4), a transmission rod (8) is provided on the handle (1), and the rear end of the transmission rod (8) is passed through the motor housing (3) and is connected to the motor housing (3). The output shaft (7) is connected, and the motor (4) rotates to drive the output shaft (7) to rotate, thereby driving the cutting assembly to rotate through the transmission rod (8) to complete mowing. The rear end of the handle (1) is provided with a connecting piece (19), and the rear end of the connecting piece (19) is protrudingly formed with a clamping portion (10). The front end of the motor housing (3) is provided with a plurality of clamping grooves (11), and the clamping portions (10) are clamped with the clamping grooves (11). The handle (1) is mutually clamped to the motor housing (3) through the clamping portion (10) and the clamping grooves (11).

2. A lawn mower according to claim 1, characterized in that: The control panel (5) is located below the motor (4); an air passage is provided inside the motor housing (3); the control panel (5) is located inside the air passage; the motor (4) is located on the side of the air passage; a plurality of air inlets (16) are provided at the rear end and the lower end of the motor housing (3); and air outlets (17) are provided at the upper end and the side of the motor housing (3); the control panel (5) is located near the air inlet (16) of the motor housing (3); and the motor (4) is located near the air outlet (17). The motor (4) is driven to rotate to generate airflow, so that the airflow in the air passage circulates outside, and the airflow flows through the surface of the control panel and the interior of the motor, achieving a good heat dissipation effect.

3. The lawn mower according to claim 1, characterized in that: The front end of the motor housing (3) is provided with a clamping hole (12), the clamping groove (11) is arranged around the rear of the clamping hole (12), and the clamping portion (10) is passed through the clamping hole (12) and connected to the clamping groove (11).

4. The lawn mower according to claim 1, characterized in that: The front end of the motor housing (3) is provided with a connecting hole (13), the transmission rod (8) is inserted into the connecting hole (13), and a fixing portion (14) is provided in the motor housing (3). The fixing portion (14) is sleeved on the transmission rod (8) and squeezes and locks the transmission rod (8), so that the transmission rod (8) is fixedly connected to the motor housing (3).

5. A lawn mower according to any one of claims 1 to 4, characterized in that: The front end of the transmission rod (8) is provided with an extension rod (18), and the transmission rod (8) can be connected to the cutting assembly through the extension rod (18). A connecting piece (19) is provided between the extension rod (18) and the transmission rod (8). The upper and lower ends of the connecting piece (19) are both provided with locking pieces (20). A knob (21) is provided on the outer side of the locking piece (20). Turning the knob (21) can drive the locking piece (20) to rotate, loosen or lock. The knob (21) is used to control the connecting piece (19) to lock or loosen the extension rod (18) and the transmission rod (8).

6. The lawn mower according to claim 5, characterized in that: The lower end of the transmission rod (8) is provided with a first fixing hole (22), the upper end of the extension rod (18) is provided with a second fixing hole (23), and the connecting member (19) is provided with a first fixing member (24) and a second fixing member (25) adapted to the first fixing hole (22) and the second fixing hole (23), the front end of the first fixing member (24) is passed through the first fixing hole (22), and the second fixing member (25) is passed through the second fixing hole (23), and the position between the extension rod (18) and the transmission rod (8) is simultaneously limited by the first fixing member (24) and the second fixing member (25).

7. The lawn mower according to claim 5, characterized in that: A transmission shaft (26) is provided in the transmission rod (8), and an extension shaft (27) is provided in the extension rod (18). The upper end of the transmission shaft (26) is connected to the output shaft (7), and the lower end is connected to the extension shaft (27). A bearing (28) is provided between the transmission shaft (26) and the extension shaft (27). A transmission member (29) is provided on the bearing (28). The transmission member (29) is exposed on both sides of the bearing (28). Extension grooves (30) and transmission grooves (31) are provided at both ends of the transmission member (29). The transmission groove (31) is connected to the lower end of the transmission shaft (26), and the extension groove (30) is connected to the upper end of the extension shaft (27). When the transmission shaft (26) rotates, the extension shaft (27) is driven to rotate through the transmission member (29).

8. The lawn mower according to claim 7, characterized in that: The outer ring of the bearing (28) is provided with a protective sleeve (32), which is sleeved on the bearing (28). The outer side of the protective sleeve (32) abuts against the inner wall of the connecting member (19), and the connecting member (19) can squeeze the protective sleeve (32) when it is locked.

9. The lawn mower according to claim 8, characterized in that: The protective cover (32) is made of rubber.

10. The lawn mower according to claim 1, characterized in that: The transmission rod (8) is covered with an auxiliary handle (33), and a baffle (34) is provided on one side or both sides of the auxiliary handle (33), and the baffle (34) protrudes from the transmission rod (8) and extends outward.

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