Waterproof structure of grass trimming head

Abstract

The utility model belongs to the technical field of gardening tools, and particularly relates to a waterproof structure of a grass mowing head, which comprises a grass mowing head main body, a motor arranged in the grass mowing head main body, a power main shaft connected with the motor and a working head connected with the power main shaft, the motor is arranged in the mounting base and located below the shell cover, a plurality of air outlets are formed in the shell cover, a waterproof plate is further arranged in the grass trimming head body and located below the air outlets, a water collecting channel is formed in the waterproof plate, a water outlet part communicated with the water collecting channel is arranged on the waterproof plate, and the water outlet part is communicated with the water collecting channel. A water outlet communicated with the outside is formed in the mounting base, the water outlet part is arranged in the water outlet, the waterproof structure is simple in structure and enables the grass trimming head to have good waterproof performance, the motor in the grass trimming head can be prevented from making contact with water, and the situation that the motor is damaged is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of garden tools, in particular to a waterproof structure of a grass trimmer head. Background Art

[0002] With the advancement of urban greening, the number of green belts such as gardens and lawns is increasing, and the application of lawn mowers is becoming more and more extensive. At present, most of the lawn mowers on the market include a longitudinally extending connecting rod and a lawn mower head installed at the front end of the connecting rod. The lawn mower line or blade installed on the lawn mower head is driven to rotate at high speed by a driving motor to achieve cutting operation. In order to ensure the heat dissipation of the motor, an air outlet is usually provided on the outer shell of the lawn mower head so that the heat generated by the motor during high-speed rotation can be smoothly discharged from the air outlet to ensure the normal operation of the motor. However, since the air outlet is always connected to the outside world, its waterproof performance is poor. For example: in the early morning, dew is usually attached to the green plants on the lawn. At this time, when the lawn mower is working, the dew on the green plants will enter the outer shell from the air outlet and come into contact with the motor, thereby damaging the motor in the lawn mower head and causing the lawn mower to be unable to be used normally. Summary of the Invention

[0003] The utility model aims to provide a waterproof structure with a simple structure and good waterproof performance for a grass trimmer head, which can prevent the motor in the grass trimmer head from coming into contact with water and avoid damage to the motor.

[0004] The purpose of this utility model is achieved in this way:

[0005] A waterproof structure for a grass trimmer head, comprising a grass trimmer head body, a motor arranged in the grass trimmer head body, a power spindle connected to the motor, and a working head connected to the power spindle, the grass trimmer head body comprising a mounting seat and a shell cover covering the mounting seat, the motor being arranged in the mounting seat and located below the shell cover, the shell cover being provided with a plurality of air outlets, a waterproof plate being further provided in the grass trimmer head body, the waterproof plate being located below the air outlet, a water collecting trough being provided on the waterproof plate, a water outlet portion connected to the water collecting trough being provided on the waterproof plate, a water outlet connected to the outside being provided on the mounting seat, and the water outlet portion being provided in the water outlet.

[0006] Furthermore, a dust cover is provided on the shell cover, a heat dissipation barrier is formed between the dust cover and the shell cover, a plurality of through holes are opened on the dust cover, and the through holes and the air outlet are connected to the heat dissipation space.

[0007] Furthermore, the shell cover is provided with an inserting interface and a snap hole, one end of the dust cover is provided with an inserting protrusion, the inserting protrusion is arranged in the inserting interface, the other end of the dust cover is provided with a toggle groove, the toggle groove is provided with a toggle piece, the toggle piece is provided with a snap block, and the snap block is arranged in the snap hole and snapped with the shell cover.

[0008] Furthermore, a snap-fitting bevel is provided at the inner end of the snap-fitting block, a guide platform is provided in the snap-fitting hole, and a guide bevel matched with the snap-fitting bevel is provided on the guide platform.

[0009] Furthermore, the dustproof cover covers the water outlet, and a guide groove is opened on the side wall of the shell cover, and the guide groove is connected to the water outlet.

[0010] Furthermore, an abutment platform is provided on the top of the motor, and the abutment platform abuts against the lower surface of the waterproof board. The bottom of the shell cover is symmetrically provided with fixing grooves, and the waterproof board is symmetrically provided with fixing blocks, and the fixing blocks are arranged in the fixing grooves.

[0011] Furthermore, a mounting groove is provided on the mounting seat, the motor is arranged in the mounting groove, air inlets are provided on both sides of the mounting seat, the air inlets are connected to the mounting groove, a motor shaft is provided at the bottom of the motor, a heat dissipation wind wheel is provided on the motor shaft, and the heat dissipation wind wheel is located in the mounting groove.

[0012] Furthermore, the bottom of the mounting seat is covered with a bottom cover, and a rotation space is formed between the bottom cover and the mounting seat, the power spindle is rotatably arranged in the rotation space, one end of the power spindle passes through the rotation space and is exposed outside the bottom cover, the working head is a blade, and the blade is fixedly set at one end of the power spindle, and a rotation hole connected to the rotation space is opened at the bottom of the mounting groove, one end of the motor shaft passes through the rotation hole and is exposed in the rotation space and is located on one side of the power spindle, a transmission assembly is provided between the motor shaft and the power spindle, and the transmission assembly includes a driving gear and a driven gear meshing with the driving gear, the driving gear is set at one end of the motor shaft, and the driven gear is set on the power spindle.

[0013] Furthermore, a rotating bearing is provided in the rotating hole, the rotating bearing is sleeved on the motor shaft, and a clamping platform is provided on the inner wall of the rotating hole, and the bottom of the rotating bearing abuts against the clamping platform.

[0014] Furthermore, a baffle is provided at one end of the bottom cover.

[0015] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0016] The utility model belongs to the technical field of garden tools, and particularly refers to a waterproof structure of a grass trimmer head, comprising a grass trimmer head body, a motor arranged in the grass trimmer head body, a power spindle connected to the motor, and a working head connected to the power spindle. When the motor starts working, the motor will drive the power spindle to rotate, and the working head is connected to the power spindle. The working head is the same as the working head of a common grass trimmer on the market. When the power spindle rotates, the working head will rotate synchronously with the power spindle, thereby trimming the grass. The grass trimmer head body comprises a mounting seat and a shell cover that covers the mounting seat. The motor is in the mounting seat and is located below the shell cover. The shell cover is provided with a plurality of air outlets. The arrangement of the air outlets enables the heat generated by the motor during high-speed rotation to flow out through the air outlets. A waterproof plate is provided in the grass trimmer head body, which is waterproof. There is a water collecting trough on the board for collecting water, and the waterproof plate is located below the air outlet. The water outlet on the waterproof plate is connected to the water collecting trough, and the water outlet is arranged in the water outlet of the mounting seat, and the water outlet is connected to the outside. When the grass trimmer head works in a humid environment, water will enter the mounting seat through the air outlet on the shell cover, but because there is a waterproof plate inside the main body of the grass trimmer head, water will eventually drip into the water collecting trough of the waterproof plate, thereby avoiding contact between the motor and water, causing damage to the motor, and when too much water is collected in the water collecting trough, the water in the water collecting trough will flow out of the mounting seat through the water outlet, thereby avoiding the situation where when there is too much water in the water collecting trough, water flows out from the edge of the waterproof plate to the outside of the water collecting trough, thereby causing water to contact with the motor, so that the grass trimmer head can also work in a humid environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a reference diagram of the utility model in use when it is installed on a lawn mower.

[0018] Figure 2 It is a three-dimensional diagram of the present utility model.

[0019] Figure 3 It is an exploded view of the working head and the main body of the grass trimming head of the utility model.

[0020] Figure 4 It is an exploded view of the bottom cover and baffle of the utility model.

[0021] Figure 5 It is an exploded view of the shell cover and the dust cover of the utility model.

[0022] Figure 6 It is a three-dimensional diagram of the dust cover of the utility model.

[0023] Figure 7 It is an exploded view of the mounting base and the shell cover of the utility model.

[0024] Figure 8 It is a structural schematic diagram of the shell cover and waterproof board of the utility model.

[0025] Figure 9 It is an exploded view of the shell cover and waterproof board of the utility model.

[0026] Figure 10 It is an exploded view of the shell cover and waterproof board of the utility model.

[0027] Figure 11 It is an exploded view of the mounting base and the bottom cover of the utility model.

[0028] Figure 12 It is a structural diagram of the driving gear and the driven gear of the utility model.

[0029] Figure 13 It is an exploded view of the motor, power spindle and bottom cover of the utility model.

[0030] Figure 14 It is a structural diagram of the driving gear and the driven gear of the utility model.

[0031] Figure 15 It is a cross-sectional view of the shell cover and the dust cover of the utility model.

[0032] The numbers in the figure represent the following: 1-mower head body; 2-motor; 3-power spindle; 4-working head; 5-mounting base; 6-housing cover; 7-air outlet; 8-waterproof board; 9-water collecting channel; 10-water outlet; 11-water outlet;

[0033] 12-Dust cover; 13-Heat dissipation barrier; 14-Through hole; 15-Plug port; 16-Snap hole; 17-Plug bump; 18-Switch slot; 19-Switch piece; 20-Snap block; 21-Snap bevel; 22-Guide platform; 23-Guide bevel; 24-Direction channel; 25-Abutment platform; 26-Fixed slot; 27-Fixed block; 28-Mounting slot; 29-Air inlet; 30-Motor shaft; 31-Heat dissipation impeller; 32-Bottom cover; 33-Rotation space; 34-Rotation hole; 35-Drive gear;

[0034] 36-driven gear; 37-rotating bearing; 38-clamping platform; 39-baffle. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with specific embodiments:

[0036] The present invention belongs to the technical field of garden tools, and particularly refers to a waterproof structure of a grass trimmer head, comprising a grass trimmer head body 1, a motor 2 arranged in the grass trimmer head body 1, a power spindle 3 connected to the motor 2, and a working head 4 connected to the power spindle 3. When the motor 2 starts working, the motor 2 will drive the power spindle 3 to rotate, and the working head 4 is connected to the power spindle 3. The working head 4 is the same as the working head 4 on the common grass trimmers on the market. When the power spindle 3 rotates, the working head 4 will rotate synchronously with the power spindle 3, thereby trimming the grass. The grass trimmer head body 1 comprises a mounting seat 5 and a shell cover 6 covering the mounting seat 5. The motor 2 is in the mounting seat 5 and is located below the shell cover 6. The shell cover 6 is provided with a plurality of air outlets 7. The setting of the air outlets 7 enables the heat generated by the motor 2 during the high-speed rotation to flow out through the air outlets 7. A waterproof plate 8 is provided in the grass trimmer head body 1. The waterproof plate There is a water collecting trough 9 for collecting water on 8, and the waterproof plate 8 is located below the air outlet 7. The water outlet part 10 on the waterproof plate 8 is connected to the water collecting trough 9, and the water outlet part 10 is arranged in the water outlet 11 of the mounting seat 5, and the water outlet 11 is connected to the outside. When the grass trimming head works in a humid environment, water will enter the mounting seat 5 along the air outlet 7 on the shell cover 6, but because there is a waterproof plate 8 in the grass trimming head body 1, the water will eventually drip into the water collecting trough 9 of the waterproof plate 8, thereby preventing the motor 2 from contacting with water and causing damage to the motor 2. When too much water is collected in the water collecting trough 9, the water in the water collecting trough 9 will flow out of the mounting seat 5 through the water outlet part 10, thereby preventing the water in the water collecting trough 9 from flowing out of the edge of the waterproof plate 8 to the outside of the water collecting trough 9 when there is too much water in the water collecting trough 9, thereby causing water to contact with the motor 2, so that the grass trimming head can also work in a humid environment.

[0037] Preferably, a dust cover 12 is provided on the shell cover 6, and a heat dissipation barrier 13 is formed between the dust cover 12 and the shell cover 6, and a plurality of through holes 14 are opened on the dust cover 12, and the through holes 14 and the air outlet 7 are all connected with the heat dissipation space; since a heat dissipation barrier 13 is formed between the dust cover 12 and the shell cover 6, and the plurality of through holes 14 on the dust cover 12 and the plurality of air outlets 7 on the shell cover 6 are all connected with the heat dissipation space, the dust cover 12 cannot block the air outlet 7 on the shell cover 6, so that the heat generated by the motor 2 can flow out to the outside of the grass trimmer head body 1 through the air outlet 7, the heat dissipation space and the through holes 14 in sequence, and the dust cover 12 can also prevent grass clippings and dust generated during the operation of the grass trimmer from blocking the air outlet 7.

[0038] Preferably, the shell cover 6 is provided with an inserting port 15 and a snap hole 16, one end of the dust cover 12 is provided with an inserting protrusion 17, the inserting protrusion 17 is arranged in the inserting port 15, the other end of the dust cover 12 is provided with a toggle groove 18, a toggle piece 19 is provided in the toggle groove 18, a snap block 20 is provided on the toggle piece 19, and the snap block 20 is arranged in the snap hole 16 and snapped with the shell cover 6; when installing the dust cover 12, it is necessary to first align the inserting protrusion 17 at one end of the dust cover 12 with the inserting port 15 on the shell cover 6 and insert it so that the inserting protrusion 17 is inserted into the inserting port. Since the toggle piece 19 has a certain elasticity, the user will toggle the piece 19 at this time. After being pushed outward, the snap block 20 on the toggle piece 19 corresponds to the position of the snap hole 16, and the user releases the toggle piece 19 to allow the snap block 20 to enter the snap hole 16. At this time, the snap block 20 will be engaged with the shell cover 6, so that the dust cover 12 is firmly installed on the shell cover 6. When the grass trimmer head has been working for a long time, the through hole 14 on the dust cover 12 is blocked by grass clippings. At this time, the user can push the toggle piece 19 outward to disengage the snap block 20 from the snap hole 16 and release the engagement with the shell cover 6. At this time, the user can remove the dust cover 12 from the shell cover 6, so that the plug-in protrusion 17 is disengaged from the plug-in interface 15, thereby making it convenient for the user to clean the dust cover 12.

[0039] Preferably, the inner end of the snap block 20 is provided with a snapping bevel 21, and a guide platform 22 is provided in the snap hole 16, and the guide platform 22 is provided with a guide bevel 23 that matches the snapping bevel 21; since there is a guide platform 22 in the snap hole 16, and the guide bevel 23 on the guide platform 22 matches the snapping bevel 21 at the inner end of the snap block 20, when the user inserts the plug protrusion 17 into the plug interface, the snapping bevel 21 at the inner end of the snap block 20 will contact the guide bevel 23 on the guide platform 22. At this time, when the user presses the dust cover 12 down with force, the toggle piece 19 will undergo a certain deformation, and the snap block 20 will enter the snap hole 16 along the guide bevel 23. Therefore, when installing the dust cover 12, the user needs to manually toggle the toggle piece 19, making the installation of the dust cover 12 more convenient and labor-saving.

[0040] Preferably, the dust cover 12 covers the water outlet 11, and a guide groove 24 is provided on the side wall of the shell cover 6, and the guide groove 24 is connected to the water outlet 11; when the dust cover 12 is installed on the shell cover 6, it can cover the water outlet 11, thereby preventing grass clippings generated during the operation of the grass trimming head from entering the water outlet 11 and blocking the water outlet 11, so that the water in the water collecting channel 9 cannot flow out to the outside along the water outlet 10, and the guide groove 24 of the side plate of the shell cover 6 is connected to the water outlet 11, so that when the water in the water collecting channel 9 flows out to the water outlet 11 through the water outlet 10, it can flow out to the outside of the installation shell along the guide groove 24, avoiding the situation that the water cannot flow out smoothly to the outside of the installation shell after the dust cover 12 covers the water outlet 11.

[0041] Preferably, an abutment platform 25 is provided on the top of the motor 2, and the abutment platform 25 abuts against the lower surface of the waterproof plate 8. The bottom of the shell cover 6 is symmetrically provided with fixing grooves 26, and the waterproof plate 8 is symmetrically provided with fixing blocks 27, and the fixing blocks 27 are arranged in the fixing grooves 26; the abutment platform 25 on the top of the motor 2 abuts against the lower surface of the waterproof plate 8, and the two fixing blocks 27 on the waterproof plate 8 are respectively arranged in the left and right fixing grooves 26 at the bottom of the shell cover 6, so that the waterproof plate 8 can be fixed in the grass trimming head body 1, avoiding the waterproof plate 8 from moving at will in the grass trimming head body 1, so that the water entering from the air outlet 7 on the shell cover 6 can drip into the water collection channel 9 of the waterproof plate 8, thereby ensuring that the motor 2 will not come into contact with water.

[0042] Preferably, a mounting groove 28 is provided on the mounting base 5, and the motor 2 is arranged in the mounting groove 28. Air inlets 29 are provided on both sides of the mounting base 5, and the air inlets 29 are connected to the mounting groove 28. A motor shaft 30 is provided at the bottom of the motor 2, and a heat dissipation fan 31 is provided on the motor shaft 30. The heat dissipation fan 31 is located in the mounting groove 28. Since the air inlets 29 on both sides of the mounting base 5 are connected to the mounting groove 28 on the mounting base 5, and the motor 2 is arranged in the mounting groove 28, the motor 2 can be prevented from moving at will, so that the motor 2 can be kept in a cool and dry place. The machine 2 can be fixedly mounted on the mounting base 5, and a heat dissipation fan wheel 31 is provided on the motor shaft 30 of the motor 2. When the motor 2 drives the motor shaft 30 to rotate, the heat dissipation fan wheel 31 will rotate synchronously with the motor shaft 30, so that the outside air can be drawn into the mounting groove 28 through the air inlet 29 and contact the outer surface of the motor 2, thereby reducing the temperature of the motor 2. The heat dissipation fan wheel 31 will generate wind force during the rotation process, so that the heat generated by the motor 2 during operation can be discharged faster through the air outlet 7, so that the heat dissipation effect of the motor 2 is better.

[0043] Preferably, the bottom of the mounting seat 5 is covered with a bottom cover 32, and a rotation space 33 is formed between the bottom cover 32 and the mounting seat 5. The power spindle 3 is rotatably arranged in the rotation space 33, and one end of the power spindle 3 passes through the rotation space 33 and is exposed outside the bottom cover 32. The working head 4 is a blade, and the blade is fixedly arranged at one end of the power spindle 3. The bottom of the mounting groove 28 is provided with a rotation hole 34 connected to the rotation space 33, and one end of the motor shaft 30 passes through the rotation hole 34 and is exposed in the rotation space 33 and is located on one side of the power spindle 3. A transmission assembly is provided between the motor shaft 30 and the power spindle 3, and the transmission assembly includes a driving gear 35 and a driven gear 36 meshing with the driving gear 35. The driving gear 35 is arranged at one end of the motor shaft 30, and the driven gear 36 is arranged on the power spindle 3; the rotation space 33 on the bottom cover 32 enables the power spindle 3 to rotate smoothly The cam 35 is provided with a toothed slot 34 at the bottom of the cam 35 so that the toothed slot 34 is engaged with the toothed slot 34 and the toothed slot 34 is engaged with the toothed slot 34.

[0044] Preferably, a rotating bearing 37 is provided in the rotating hole 34, and the rotating bearing 37 is sleeved on the motor shaft 30, and a clamping platform 38 is provided on the inner wall of the rotating hole 34, and the bottom of the rotating bearing 37 abuts against the clamping platform 38; the rotating bearing 37 in the rotating hole 34 abuts against the clamping platform 38 on the inner wall of the rotating hole 34, so that the rotating bearing 37 can be smoothly installed in the rotating hole 34, so that the rotating bearing 37 will not fall out of the rotating hole 34, and the rotating bearing 37 is sleeved on the motor shaft 30 of the motor 2, so as to avoid direct contact between the motor shaft 30 and the inner wall of the rotating hole 34, so that the motor shaft 30 can rotate more smoothly during high-speed rotation.

[0045] Preferably, a baffle 39 is provided at one end of the bottom cover 32 to prevent grass clippings or gravel generated by the mowing head during operation from splashing onto the user, thereby ensuring the user's safety.

[0046] 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 waterproof structure for a grass trimmer head, comprising a grass trimmer head body (1), a motor (2) disposed in the grass trimmer head body (1), a power main shaft (3) connected to the motor (2), and a working head (4) connected to the power main shaft (3), characterized in that: The grass trimmer head body (1) comprises a mounting seat (5) and a shell cover (6) covering the mounting seat (5); the motor (2) is arranged in the mounting seat (5) and located below the shell cover (6); a plurality of air outlets (7) are provided on the shell cover (6); a waterproof plate (8) is further provided in the grass trimmer head body (1); the waterproof plate (8) is located below the air outlets (7); a water collecting channel (9) is provided on the waterproof plate (8); a water outlet (10) connected to the water collecting channel (9) is provided on the waterproof plate (8); a water outlet (11) connected to the outside is provided on the mounting seat (5); and the water outlet (10) is provided in the water outlet (11).

2. The waterproof structure of a grass trimmer head according to claim 1, characterized in that: The shell cover (6) is provided with a dust cover (12), a heat dissipation barrier (13) is formed between the dust cover (12) and the shell cover (6), a plurality of through holes (14) are opened on the dust cover (12), and the through holes (14) and the air outlet (7) are both connected to the heat dissipation space.

3. The waterproof structure of a grass trimmer head according to claim 2, characterized in that: The shell cover (6) is provided with an inserting port (15) and a snap hole (16); one end of the dust cover (12) is provided with an inserting protrusion (17); the inserting protrusion (17) is arranged in the inserting port (15); the other end of the dust cover (12) is provided with a toggle groove (18); a toggle piece (19) is provided in the toggle groove (18); a snap block (20) is provided on the toggle piece (19); the snap block (20) is arranged in the snap hole (16) and snapped with the shell cover (6).

4. The waterproof structure of a grass trimmer head according to claim 3, characterized in that: The inner end of the snap block (20) is provided with a snap-fitting bevel (21), the snap hole (16) is provided with a guide platform (22), and the guide platform (22) is provided with a guide bevel (23) adapted to the snap-fitting bevel (21).

5. The waterproof structure of a grass trimmer head according to claim 2, characterized in that: The dust cover (12) covers the water outlet (11), and a guide channel (24) is provided on the side wall of the shell cover (6), and the guide channel (24) is connected to the water outlet (11).

6. The waterproof structure of a grass trimmer head according to any one of claims 1 to 4, characterized in that: The top of the motor (2) is provided with an abutting platform (25), and the abutting platform (25) abuts against the lower surface of the waterproof plate (8). The bottom of the shell cover (6) is symmetrically provided with fixing grooves (26), and the waterproof plate (8) is symmetrically provided with fixing blocks (27), and the fixing blocks (27) are arranged in the fixing grooves (26).

7. The waterproof structure of a grass trimmer head according to any one of claims 1 to 4, characterized in that: The mounting seat (5) is provided with a mounting groove (28), the motor (2) is arranged in the mounting groove (28), air inlets (29) are provided on both sides of the mounting seat (5), the air inlets (29) are connected to the mounting groove (28), a motor shaft (30) is provided at the bottom of the motor (2), a heat dissipation wheel (31) is provided on the motor shaft (30), and the heat dissipation wheel (31) is located in the mounting groove (28).

8. The waterproof structure of a grass trimmer head according to claim 7, characterized in that: The bottom of the mounting seat (5) is covered with a bottom cover (32), and a rotation space (33) is formed between the bottom cover (32) and the mounting seat (5). The power spindle (3) is rotatably arranged in the rotation space (33), and one end of the power spindle (3) passes through the rotation space (33) and is exposed outside the bottom cover (32). The working head (4) is a blade, and the blade is fixedly arranged at one end of the power spindle (3). The bottom of the mounting groove (28) is provided with a hole connected to the rotation space (33). A rotating hole (34) is formed on the motor shaft (30), one end of the motor shaft (30) passes through the rotating hole (34) and is exposed in the rotating space (33) and is located on one side of the power main shaft (3). A transmission assembly is provided between the motor shaft (30) and the power main shaft (3). The transmission assembly includes a driving gear (35) and a driven gear (36) meshing with the driving gear (35). The driving gear (35) is provided at one end of the motor shaft (30), and the driven gear (36) is provided on the power main shaft (3).

9. The waterproof structure of a grass trimmer head according to claim 8, characterized in that: A rotating bearing (37) is provided in the rotating hole (34), and the rotating bearing (37) is sleeved on the motor shaft (30). A clamping platform (38) is provided on the inner wall of the rotating hole (34), and the bottom of the rotating bearing (37) abuts against the clamping platform (38).

10. The waterproof structure of a grass trimmer head according to claim 8, characterized in that: A baffle (39) is provided at one end of the bottom cover (32).

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