A dual-purpose garden mower with switching function

Abstract

The present invention provides a dual-purpose garden lawn mower with a switching function, comprising a head housing, an output shaft being arranged in the head housing, a cutter disc assembly and a rope reel assembly being further arranged in the head housing, the cutter disc assembly being arranged at the bottom of the output shaft, the rope reel assembly being arranged at the bottom of the cutter disc assembly, the output shaft passing through the cutter disc assembly and the rope reel assembly and driving them to rotate, a one-way bearing 1 and a one-way bearing 2 being respectively arranged between the output shaft and the cutter disc assembly and the rope reel assembly, and through the cooperation of the one-way bearing 1 and the one-way bearing 2, the output shaft is made to drive the cutter disc assembly and the rope reel assembly to rotate in forward and reverse rotation respectively, thereby realizing the functions of mowing and cutting grass simultaneously on one device.

Description

Technical Field

[0001] The invention relates to garden tools, in particular to a dual-purpose garden mower with a switching function. Background Art

[0002] Lawn mowers and grass trimmers are both garden tools. The difference between them lies in the use of rigid cutters and flexible cutters. During use, the two devices have different advantages and disadvantages. Lawn mowers are suitable for a wider range of plants and have good cutting power for both woody plants and herbaceous plants. However, they have more restrictions on the site. Because they use hard blades for cutting, there is a risk of blades breaking and flying out when used in scenes with a lot of gravel and cement. Lawn trimmers usually use special ropes as cutting parts and cut plants by swinging the rope. Their advantage is that they can be used in complex environments, and it is easier to handle plants near the wall. There will be no danger when touching gravel and cement. However, the rope of the lawn trimmer is not hard enough and is only suitable for cutting herbaceous plants with lower hardness. It cannot be used to trim shrubs, etc.

[0003] At present, a Chinese patent with publication number CN202022026529.4 discloses a lawn mower, including a lawn mower head, which includes a lawn mower rope and a cutting blade. It has two lawn mowing modes. In the first lawn mowing mode, the lawn mower rope and the cutting blade work together, and in the second lawn mowing mode, only the cutting blade works.

[0004] The above patent still has some shortcomings. Although the above patent installs the mowing rope and the cutting blade on the mower, it cannot make the mowing rope work alone. When dealing with plants near the wall and in an environment with a lot of bricks and stones, the blade is still prone to breakage and flying out, which is quite dangerous. Summary of the Invention

[0005] In view of this, an object of the present invention is to provide a dual-purpose garden lawn mower with a switching function, which has the dual functions of mowing and trimming grass.

[0006] The technical solution of the present invention is: a dual-purpose garden lawn mower with a switching function, comprising a head housing, an output shaft is arranged in the head housing, a cutter disc assembly and a rope reel assembly are also arranged in the head housing, the cutter disc assembly is arranged at the bottom of the output shaft, the rope reel assembly is arranged at the bottom of the cutter disc assembly, the output shaft passes through the cutter disc assembly and the rope reel assembly and drives them to rotate, a one-way bearing 1 and a one-way bearing 2 are respectively arranged between the output shaft and the cutter disc assembly and the rope reel assembly, the one-way bearing 1 and the free rotation direction of the one-way bearing 2 are opposite to each other, the output shaft drives the cutter disc assembly to rotate when it rotates forward, and drives the rope reel assembly to rotate when the output shaft rotates reversely, and a limit assembly is also provided at the bottom of the rope reel assembly to prevent the rope reel assembly from rotating with the blade assembly.

[0007] Through the above technical means, through the cooperation of one-way bearing 1 and one-way bearing 2, the output shaft can drive the cutter disc assembly and the rope disc assembly to rotate in forward and reverse directions respectively, thereby realizing the functions of mowing and cutting grass on one device at the same time.

[0008] Preferably, the cutter disc assembly includes a rotating seat, several knife seats, several cutters and a winding disk, the one-way bearing is arranged between the output shaft and the rotating seat, the knife seat is fixedly arranged on the rotating seat, a sliding groove is provided in the knife seat, the cutter is slidingly arranged in the sliding groove, the tail of the cutter is connected to a wire rope, the other end of the wire rope passes through the bottom of the knife seat and is fixed on the winding disk, the winding disk is set on the output shaft, and a pressure relief plunger is provided between the winding disk and the output shaft, and when the output shaft is reversed, the wire rope is tightened and the cutter is driven back into the knife seat.

[0009] By the above technical means, a reel and a rotating seat are provided, and the cutter and the reel are connected by a wire rope. When the output shaft is reversed and cannot drive the rotating seat to rotate, the wire rope is pulled by the reel to retract the cutter into the knife seat. When the output shaft drives the rotating seat to rotate, the cutter is thrown out by centrifugal force. By providing a pressure relief plunger, the wire rope is tightened when the cutter is retracted into place, and the gravity of the knife seat and the rotating seat causes the steel ball of the pressure relief plunger to be retracted, so that the reel cannot continue to rotate, thereby preventing the reel from driving the rotating seat to rotate.

[0010] Preferably, a ball plate is arranged between the cutter disc assembly and the rope disc assembly, the limiting assembly includes a rubber wheel and a wheel seat, the rubber wheel is arranged at the bottom of the wheel seat, and a one-way bearing three is arranged between the wheel seat and the rope disc assembly, and the free rotation direction of the one-way bearing three is the same as that of the one-way bearing one.

[0011] Through the above technical means, by setting the ball plate, the friction between the cutter disc assembly and the rope disc assembly is reduced. By setting the rubber wheel and the one-way bearing three, the friction between the rope disc assembly and the ground is increased during the rotation of the cutter disc assembly, preventing the rope disc assembly from rotating with the cutter disc assembly. At the same time, the rubber wheel can push the lawn mower to move, which is more labor-saving.

[0012] Preferably, the rope reel assembly includes a rotating seat 2, a pair of mowing ropes and a winding reel 2, the one-way bearing 2 is arranged between the rotating seat 2 and the output shaft, the winding reel 2 is sleeved on the output shaft, one end of the two mowing ropes is fixed on the winding reel 2, and the other end passes through the rotating seat 2, and a pressure relief plunger 2 is arranged between the winding reel 2 and the output shaft.

[0013] By means of the above technical means, the second rotating seat cooperates with the second reel, so that the mowing rope can be retracted when the output shaft rotates forward.

[0014] Preferably, both ends of the mowing rope are fixed on the winding disk 2, a connecting turntable is provided on the top of the winding disk 2, a limit cavity is provided on the connecting turntable, a limit disk is provided on the bottom of the one-way bearing 2, the limit disk is provided in the limit cavity, the limit disk and the limit cavity cooperate to limit the Z-axis position of the winding disk 2 and the one-way bearing 2, the outer ring of the one-way bearing 2 is inclined and provided with a rubber sleeve, the bottom of the winding disk 2 is rotatably set on the limit assembly and moves along the Z-axis with the limit assembly, and a plunger slide groove for the movement of the pressure relief plunger 2 is also provided on the output shaft.

[0015] Through the above technical means, by fixing both ends of the mowing rope on the reel, the mowing rope is prevented from being completely retracted into the reel, resulting in the mowing rope being unable to be swung out. By setting a connecting turntable and connecting it to the one-way bearing 2, and connecting the bottom of the reel 2 to the limit assembly, the mowing head is lifted and the output shaft is driven to reverse several times, so that the mowing rope can be swung out first.

[0016] Preferably, the rope drum assembly also includes a swing block, which is slidably arranged on the limit assembly, and a second steel wire rope is arranged at the tail of the swing block, and the second steel wire rope is fixed on the second rotating seat. A pair of through holes are opened on the swing block, and the grass-cutting rope passes around the two through holes. When the output shaft rotates forward, the grass-cutting rope is wound and pulls the swing block close to the second rotating seat. When the output shaft reverses, the swing block pulls out the grass-cutting rope by centrifugal force.

[0017] Through the above technical means, by setting a swing block and passing the mowing rope through the swing block, when the mowing rope needs to be swung out, the swing block drives the mowing rope to brush out a certain distance, thereby increasing the centrifugal force of the mowing rope and preventing the situation where the centrifugal force of the mowing rope is insufficient.

[0018] Preferably, it further comprises a motor, a casing body and a connecting shaft arranged in the casing body, one end of the connecting shaft is fixed to the output end of the motor, and the other end is matched with the output shaft by means of helical gears.

[0019] By means of the above technical means, the output direction is changed by means of the helical tooth connection, and the functions of trimming and mowing the grass are simultaneously realized in the lawn mower. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of Example 1;

[0021] Figure 2 is a cross-sectional schematic diagram of embodiment 1;

[0022] Figure 3 It is a partial cross-sectional view of Example 1;

[0023] Figure 4 for Figure 3 Schematic diagram of part A;

[0024] Figure 5 for Figure 3 Schematic diagram of part B;

[0025] Figure 6 for Figure 3 Schematic diagram of part C;

[0026] Figure 7 Schematic diagram of the structure of the throwing block

[0027] Figure 8 This is a structural diagram of Example 2;

[0028] Figure 9 It is a partial cross-sectional view of the second embodiment.

[0029] Figure markings: 1. Head housing; 2. Output shaft; 3. Cutter disc assembly; 4. Rope reel assembly; 5. One-way bearing 1; 6. One-way bearing 2; 7. Limit assembly; 8. Ball plate; 9. Rubber wheel; 10. Wheel seat; 11. One-way bearing 3; 12. Rotating seat 1; 13. Cutter seat; 14. Cutter; 15. Reel 1; 16. Slide groove; 18. Wire rope 1; 19. Drain plunger 1; 20. Arc hole; 21. Rotating seat 2; 22. Grass rope; 23. Reel 2; 24. Connecting turntable; 25. Limit cavity; 26. Limit disc; 27. Rubber sleeve; 28. Throw block; 29. ​​Wire rope 2; 30. Perforation; 31. Motor; 32. Housing body; 33. Connecting shaft. DETAILED DESCRIPTION

[0030] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0031] A dual-purpose garden lawn mower with a switching function includes a head housing 1, an output shaft 2 is provided in the head housing 1, a cutter disc assembly 3 and a rope reel assembly 4 are also provided in the head housing 1, the cutter disc assembly 3 is arranged at the bottom of the output shaft 2, and the rope reel assembly 4 is arranged at the bottom of the cutter disc assembly 3. The output shaft 2 passes through the cutter disc assembly 3 and the rope reel assembly 4 and drives them to rotate. A one-way bearing 1 5 and a one-way bearing 2 6 are respectively provided between the output shaft 2 and the cutter disc assembly 3 and the rope reel assembly 4. The free rotation direction of the one-way bearing 1 5 is opposite to that of the one-way bearing 2 6. When the output shaft 2 rotates forward, the cutter disc assembly 3 is driven to rotate, and when the output shaft 2 rotates reversely, the rope reel assembly 4 is driven to rotate. A limit assembly 7 is also provided at the bottom of the rope reel assembly 4 to prevent the rope reel assembly 4 from rotating with the blade assembly. Through the cooperation of the one-way bearing 1 5 and the one-way bearing 2 6, the output shaft 2 drives the cutter disc assembly 3 and the rope reel assembly 4 to rotate in forward and reverse rotation respectively, thereby realizing the functions of mowing and cutting grass on one device at the same time.

[0032] The cam 10 of the present invention is provided with a plurality of rollers 11, 12 and 13, and the rollers 11 of the present invention are provided with a plurality of rollers 11, 12 and 13. The rollers 11 of the present invention are provided with a plurality of rollers 11, 12 and 13. The rollers 11 of the present invention are provided with a plurality of rollers 11, 12 and 13. The rollers 11 of the present invention are provided with a plurality of rollers 11, 12 and 13.

[0033] The cutter disc assembly 3 includes a rotating seat 12, three knife seats 13, three cutters 14 and a winding disk 15. The one-way bearing 5 is arranged between the output shaft 2 and the rotating seat 12. The knife seat 13 is fixedly arranged on the rotating seat 12. A sliding groove 16 is provided in the knife seat 13. A sliding shaft is provided at the tail of the cutter 14. The sliding shaft slides on the side wall of the sliding groove 16 to ensure that the cutter 14 will not separate from the knife seat 13 when rotating. A wire rope 18 is connected to the tail of the cutter 14. A hole for the wire rope 18 to pass through is provided at the bottom of the knife seat 13. The other end of the wire rope 18 passes through the bottom of the knife seat 13 and is fixed on the winding disk 15. The winding disk 15 is sleeved on the output shaft 2 and a pressure relief plunger 19 is provided between the output shaft 2. An arc hole 20 is provided on the output shaft 2 to cooperate with the steel ball in the pressure relief plunger 19. When When the output shaft 2 reverses, the wire rope 18 is tightened and the cutter 14 is retracted into the knife seat 13. When the cutter 14 is fully retracted, the output shaft 2 continues to rotate. At this time, the reel 15 is tightened and cannot continue to rotate. By arranging a pressure relief plunger 19 between the reel 15 and the center shaft, when the reel 15 tightens the wire rope 18, the pressure relief plunger 19 is disengaged from the arc hole 20, causing the reel 15 and the center shaft to slip. After the reeling is completed, the center shaft needs to be rotated forward when the cutter 14 works. At this time, the rotating seat and the reel 15 rotate together, and the cutter 14 generates a large centrifugal force during the rotation process. When the centrifugal force is greater than the spring force of the pressure relief plunger, the pressure relief plunger will disengage from the arc hole 20, causing the number of rotations of the reel 15 to increase relative to the reel 15, thereby gradually throwing out the cutter 14.

[0034] The rope drum assembly 4 includes a rotating seat 21, a pair of grass-cutting ropes 22 and a winding drum 23. The one-way bearing 26 is arranged between the rotating seat 21 and the output shaft 2. The winding drum 23 is sleeved on the output shaft 2. The two grass-cutting ropes 22 are fixed on the winding drum 23, and a part of them passes through the rotating seat 21 and is exposed. A pressure relief plunger 2 is arranged between the winding drum 23 and the output shaft 2. Through the cooperation between the rotating seat 21 and the winding drum 23, the grass-cutting rope 22 is retracted when the output shaft 2 rotates forward. The pressure relief plunger 2 has the same structure as the pressure relief plunger 19. The winding drum 23 is the same as the winding drum 15. After the winding is completed, the pressure relief will be completed and it will not continue to rotate with the output shaft 2.

[0035] Both ends of the grass cutting rope 22 are fixed on the winding disk 23, so that the grass cutting rope 22 will not be completely retracted into the winding disk 23 during the winding process, resulting in the grass cutting rope 22 being unable to be thrown out when the rotating seat 21 rotates. A connecting turntable 24 is provided on the top of the winding disk 23, and a limit cavity 25 is provided on the connecting turntable 24. A limit disk 26 is provided at the bottom of the one-way bearing 26, and the limit disk 26 is provided in the limit cavity 25. The limit disk 26 cooperates with the limit cavity 25 to limit the Z-axis position of the winding disk 23 and the one-way bearing 26. The outer ring of the one-way bearing 26 is inclined and provided with a rubber sleeve 2 7. The bottom of the reel 23 is rotatably arranged on the wheel seat 10 and moves along the Z axis with the wheel seat 10. A plunger slide groove for the release plunger 2 is also provided on the output shaft 2. When the mowing rope 22 needs to be thrown out after the winding is completed, the mowing head is lifted. At this time, the wheel seat 10 will move the reel 23 and the one-way bearing 26 downward for a short distance, and disconnect the connection between the one-way bearing 26 and the rotating seat 21. At this time, the output shaft 2 will not rotate with the rotating seat 21 in reverse, but the tightened mowing rope 22 on the reel 23 will be loosened, providing conditions for the subsequent throwing out of the mowing rope 22.

[0036] The connection between the turntable 24 and the limit plate 26, the connection between the bottom of the winding disk 23 and the wheel seat 10, and the connection between the rotating seat 21 and the wheel seat 10 are all achieved by digging holes and using cover plates, which ensures that the Z-axis direction is fixed while allowing for free rotation. The rotational fixed cooperation in this application is all based on this connection method. At the same time, in order to ensure smooth rotation, a ball bearing can be set between the two contact surfaces.

[0037] Because the rope drum assembly 4 is different from the blade assembly, the grass rope 22 is lighter. Therefore, it is found that the grass rope 22 cannot be thrown out as smoothly as the cutter disc assembly 3 by centrifugal force during use. Therefore, the rope drum assembly 4 also includes a throwing block 28, which is slidably arranged on the limit assembly 7 by means of a T-shaped slot and a T-shaped block. A steel wire rope 29 is provided at the tail of the throwing block 28. The steel wire rope 29 is fixed on the rotating seat 21. A pair of through holes 30 are opened on the throwing block 28. The grass rope 22 passes through the two through holes 30. When the output shaft 2 rotates forward, the grass rope 22 is wound and pulls the throwing block 28 close to the rotating seat 21. When the output shaft 2 rotates reversely, the throwing block 28 pulls out the grass rope 22 through centrifugal force. Therefore, when the grass rope 22 needs to be thrown out, the throwing block 28 drives the grass rope 22 to be brushed out a certain distance, thereby increasing the centrifugal force of the grass rope 22 and preventing the centrifugal force of the grass rope 22 from being insufficient. The throwing distance of the throwing block 28 is the length of the wire rope 29.

[0038] It also includes a motor 31, a casing body 32 and a connecting shaft 33 arranged in the casing body 32. One end of the connecting shaft 33 is fixed to the output end of the motor 31, and the other end is matched with the output shaft 2 through helical teeth.

[0039] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A dual-purpose garden mower with a switching function, comprising a head housing (1), wherein an output shaft (2) is provided in the head housing (1), and wherein: A cutter disc assembly (3) and a rope reel assembly (4) are also provided in the head housing (1). The cutter disc assembly (3) is provided at the bottom of the output shaft (2), and the rope reel assembly (4) is provided at the bottom of the cutter disc assembly (3). The output shaft (2) passes through the cutter disc assembly (3) and the rope reel assembly (4) and drives them to rotate. A one-way bearing (5) and a one-way bearing (6) are provided between the output shaft (2) and the cutter disc assembly (3) and the rope reel assembly (4), respectively. The free rotation directions of the one-way bearing (5) and the one-way bearing (6) are opposite. When the output shaft (2) rotates forward, it drives the cutter disc assembly (3) to rotate. When the output shaft (2) rotates reversely, it drives the rope reel assembly (4) to rotate. A limit assembly (7) is also provided at the bottom of the rope reel assembly (4) to prevent the rope reel assembly (4) from rotating with the blade assembly.

2. A dual-purpose garden mower with a switching function according to claim 1, characterized in that: The cutter disc assembly (3) comprises a rotating seat (12), a plurality of knife seats (13), a plurality of cutters (14) and a reel (15). The one-way bearing (5) is arranged between the output shaft (2) and the rotating seat (12). The knife seat (13) is fixedly arranged on the rotating seat (12). A sliding groove (16) is provided in the knife seat (13). The cutter (14) is slidingly arranged in the sliding groove (16). The tail of the cutter (14) is connected with a steel wire rope (18). The other end of the steel wire rope (18) passes through the bottom of the knife seat (13) and is fixed on the reel (15). The reel (15) is sleeved on the output shaft (2) and a pressure relief plunger (19) is arranged between the reel and the output shaft (2). When the output shaft (2) is reversed, the steel wire rope (18) is tightened and the cutter (14) is driven to retract into the knife seat (13).

3. The dual-purpose garden mower with switching function according to claim 1, characterized in that: A ball bearing (8) is provided between the cutter disc assembly (3) and the rope reel assembly (4); the limiting assembly (7) comprises a rubber wheel (9) and a wheel seat (10); the rubber wheel (9) is provided at the bottom of the wheel seat (10); a one-way bearing three (11) is provided between the wheel seat (10) and the rope reel assembly (4); the free rotation direction of the one-way bearing three (11) is the same as that of the one-way bearing one (5).

4. The dual-purpose garden mower with a switching function according to claim 1, characterized in that: The rope drum assembly (4) comprises a second rotating seat (21), a pair of grass cutting ropes (22) and a second winding drum (23); the second one-way bearing (6) is arranged between the second rotating seat (21) and the output shaft (2); the second winding drum (23) is sleeved on the output shaft (2); one end of the two grass cutting ropes (22) is fixed on the second winding drum (23), and the other end passes through the second rotating seat (21); and a second pressure relief plunger is arranged between the second winding drum (23) and the output shaft (2).

5. The dual-purpose garden mower with switching function according to claim 4, characterized in that: Both ends of the mowing rope (22) are fixed on the winding disc 2 (23), the top of the winding disc 2 (23) is provided with a connecting turntable (24), the connecting turntable (24) is provided with a limit cavity (25), the bottom of the one-way bearing 2 (6) is provided with a limit disk (26), the limit disk (26) is provided in the limit cavity (25), the limit disk (26) and the limit cavity (25) cooperate to limit the Z-axis position of the winding disc 2 (23) and the one-way bearing 2 (6), the outer ring of the one-way bearing 2 (6) is inclined and provided with a rubber sleeve (27), the bottom of the winding disc 2 (23) is rotatably provided on the limit assembly (7) and moves along the Z-axis following the limit assembly (7), and the output shaft (2) is also provided with a plunger slide groove for the movement of the pressure relief plunger 2.

6. The dual-purpose garden mower with a switching function according to claim 5, characterized in that: The rope drum assembly (4) also includes a swing block (28), which is slidably arranged on the limit assembly (7), and a second steel wire rope (29) is arranged at the tail of the swing block (28), and the second steel wire rope (29) is fixed on the second rotating seat (21). A pair of through holes (30) are opened on the swing block (28), and the grass cutting rope (22) passes through the two through holes (30). When the output shaft (2) rotates forward, the grass cutting rope (22) is wound and pulls the swing block (28) close to the second rotating seat (21). When the output shaft (2) rotates reversely, the swing block (28) pulls out the grass cutting rope (22) by centrifugal force.

7. The dual-purpose garden mower with a switching function according to claim 1, characterized in that: The invention also includes a motor (31), a housing body (32), and a connecting shaft (33) arranged in the housing body (32); one end of the connecting shaft (33) is fixed to the output end of the motor (31), and the other end is matched with the output shaft (2) by means of helical teeth.

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