Handheld lawn mower for landscaping

Abstract

The application relates to the technical field of lawn mowers, in particular to a handheld lawn mower for landscaping, which comprises a main rod, a blade arranged at the lower part of the main rod, a mounting sleeve arranged at the lower part of the main rod, a fixing sleeve rotationally connected at the lower part of the mounting sleeve, a split shaft arranged in the mounting sleeve and the fixing sleeve, a mounting ring arranged outside the split shaft, a moving ring slidingly connected below the mounting ring and the like. The rotating power of the blade is transmitted in a mode that the pressure spring, the convex shaft and the control groove are matched, the convex shaft and the control groove are reversely matched after the blade is acted on by a stone, the acting force generated by the rotation of the blade is reduced, the mutual acting force generated when the blade and the stone are in hard contact is weakened, the loss rate of the blade abraded by the stone is reduced, the possibility of the stone being hit away is reduced, and the use safety of the application is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lawn mowers, in particular to a handheld lawn mower for landscaping. BACKGROUND

[0002] A lawn mower, as the name implies, is a mechanical device specially used for trimming and removing weeds, and is generally used in the field of landscaping to maintain and repair the landscape. The handheld lawn mower, with its lightweight body and simple control method, has become the preferred tool for fine maintenance of small areas of grass, greatly improving the work efficiency and flexibility of workers.

[0003] However, in actual use, when facing a complex grassland, the lawn mower often collides with hard objects such as stones hidden in the grass, which not only easily causes damage to the blade, affecting the trimming effect and service life of the lawn mower, but also may cause the stone to be hit by the impact force generated by the high-speed rotation of the blade, thereby posing a serious threat to the safety of workers and surrounding personnel, and there is a safety hazard that cannot be ignored. SUMMARY

[0004] The present application aims to overcome the technical defects in the prior art and provide a handheld lawn mower for landscaping with reduced blade wear and high safety.

[0005] It comprises a main rod, a drive fixedly connected to the main rod, a rotating shaft arranged in the main rod, a blade arranged at the lower part of the main rod, a mounting sleeve arranged at the lower part of the main rod, a fixing sleeve rotatably connected to the lower part of the mounting sleeve, the fixing sleeve being fixedly connected to the blade, a split shaft arranged in the mounting sleeve and the fixing sleeve, the rotating shaft being connected to the split shaft, a mounting ring arranged outside the split shaft, a moving ring slidably connected below the mounting ring, a convex shaft fixedly connected to the lower part of the moving ring, an annular V-shaped control groove being formed in the inner side wall of the fixing sleeve, the convex shaft being slidably connected to the control groove, and a compression spring fixedly connected between the moving ring and the mounting ring.

[0006] In some embodiments, the mounting ring is slidably connected to the split shaft, and further comprises a connecting ring rotatably connected to the mounting ring, a mounting block fixedly connected to the side wall of the mounting sleeve, a screw rod threadedly connected to the mounting block, the screw rod being rotatably connected to the connecting ring, a sleeve rod rotatably connected to the mounting block, the sleeve rod being slidably connected to the screw rod, a rotating rod rotatably connected to the side wall of the mounting sleeve, bevel gears fixedly connected to the end of the rotating rod and the end of the sleeve rod, respectively, and the two bevel gears being engaged.

[0007] In some embodiments, it further comprises a protective plate fixedly connected to the bottom of the mounting sleeve, the protective plate being arranged in a semicircular shape and covering the upper rear part of the blade.

[0008] In some embodiments, a connecting joint is arranged between the main rod and the mounting sleeve.

[0009] In some embodiments, further comprising: a top block slidingly connected to the protective plate, the top block being annularly distributed outside the fixing sleeve.

[0010] In some embodiments, further comprising: a reset spring fixedly connected between the top block and the protective plate; a pressing block fixedly connected outside the fixing sleeve, the pressing block being capable of contacting the top block; and a hollow slot being formed in the mounting sleeve.

[0011] In some embodiments, further comprising: a cleaning brush fixedly connected to the top surface of the blade, the bristles of the cleaning brush being capable of contacting the protective plate.

[0012] In some embodiments, further comprising: a resisting rod fixedly connected to the bottom of the protective plate, the resisting rod being capable of contacting the bristles of the cleaning brush.

[0013] In some embodiments, further comprising: a protective sleeve fixedly connected between the mounting sleeve and the protective plate, the protective sleeve covering the top block.

[0014] In some embodiments, further comprising: a handle fixedly connected to the main rod, the handle and the main rod forming a Y-shaped structure.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] 1. The present application transmits the rotating power of the blade by the cooperation of the pressure spring, the convex shaft and the control groove, so that the convex shaft and the control groove are reversely matched after the blade is acted on by the stone, the acting force generated by the rotation of the blade is reduced, the mutual acting force generated when the blade and the stone are in hard contact is weakened, the loss rate of the blade caused by the abrasion of the stone is reduced, the possibility of the stone being hit away is reduced, and the use safety of the present application is improved.

[0017] 2. The force acting on the convex shaft by the pressure spring can be adjusted, so that the present application can be adjusted according to the hardness of the grass and wood to be cut, and the cooperation of the convex shaft and the control groove is avoided to ensure the cutting effect of the blade.

[0018] 3. The present application is provided with the connecting joint, so that the angle between the blade and the main rod can be adjusted, and the present application can be adjusted according to the use habits of different workers and the mowing requirements of the grassland before use, so that the workers can use the present application more conveniently and comfortably.

[0019] 4、The present application is provided with movable top block to separate grass and fixed sleeve, avoid grass winding on fixed sleeve to affect blade rotation, and avoid the present application being affected by grass to affect normal use. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0021] Figure 1 It is the overall structure schematic diagram of the present application.

[0022] Figure 2 It is the local structure sectional view of the present application.

[0023] Figure 3 It is the connection structure separation diagram of mounting sleeve, fixed sleeve and split shaft in the present application.

[0024] Figure 4 It is the connection structure sectional view of mounting sleeve, fixed sleeve and split shaft in the present application.

[0025] Figure 5 It is the structure schematic diagram of control groove in the present application.

[0026] Figure 6 It is the connection structure sectional view of mounting ring, connecting ring and screw rod in the present application.

[0027] Figure 7 It is the structure sectional view of screw rod and sleeve rod in the present application.

[0028] Figure 8 It is the position structure schematic diagram of protection plate and connecting joint in the present application.

[0029] Figure 9 It is the connection structure sectional view of top block in the present application.

[0030] Figure 10 It is the structure schematic diagram of another view of top block in the present application.

[0031] Figure 11 It is the position structure separation diagram of cleaning brush and abutting rod in the present application.

[0032] In the drawings of the present application are marked: 11, main rod; 12, drive; 13, blade; 14, handle; 21, mounting sleeve; 22, fixed sleeve; 23, sub shaft; 24, mounting ring; 25, moving ring; 26, convex shaft; 27, control groove; 28, pressure spring; 31, connecting ring; 32, mounting block; 33, screw; 34, rotating rod; 35, bevel gear; 36, sleeve rod; 41, protective plate; 42, connecting joint; 51, top block; 52, reset spring; 53, extrusion block; 54, hollow groove; 61, cleaning brush; 62, abutment rod; 71, protective sleeve. DETAILED DESCRIPTION

[0033] In order to illustrate the possible application scenarios of the present application, the technical principles, the specific implementation schemes, the purposes and effects that can be achieved, the following specific embodiments are combined with the drawings for detailed description. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, but cannot limit the protection scope of the present application.

[0034] Embodiment: A handheld lawn mower for landscaping, referring to Figures 1-4 , comprising: a main rod 11; a drive 12 fixedly installed on the upper end of the main rod 11, the drive 12 being a motor, a rotating shaft being provided in the main rod 11, and the output shaft of the drive 12 being fixed with the rotating shaft to control the rotating shaft to rotate; a blade 13 provided at the lower part of the main rod 11, the drive 12 providing the blade 13 with rotating power through the rotating shaft; a handle 14 fixedly installed on the main rod 11, the handle 14 being provided with two, and the two handles 14 forming a Y-shaped type with the main rod 11; a mounting sleeve 21 provided at the lower part of the main rod 11; a fixed sleeve 22 rotatably installed at the lower part of the mounting sleeve 21, the bottom of the fixed sleeve 22 being fixedly installed with the blade 13, so that the blade 13 is rotatably provided at the lower part of the main rod 11; a sub shaft 23 provided in the fixed sleeve 22, the rotating shaft being connected with the sub shaft 23 to control the sub shaft 23 to rotate.

[0035] Referring to Figures 3-5 , comprising: a mounting ring 24 provided outside the sub shaft 23, the mounting ring 24 being capable of rotating together with the sub shaft 23; a moving ring 25 slidably installed below the mounting ring 24, the moving ring 25 being capable of rotating together with the mounting ring 24; a convex shaft 26 fixedly installed at the lower part of the moving ring 25, three convex shafts 26 being provided on the moving ring 25; three ring V-shaped control grooves 27 being provided on the inner side wall of the fixed sleeve 22 and connected in series, the convex shaft 26 being slidably installed with the control groove 27, and the plurality of convex shafts 26 increasing the stability of the convex shaft 26 and the control groove 27; a pressure spring 28 fixedly installed between the moving ring 25 and the mounting ring 24, the pressure spring 28 acting so that the convex shaft 26 remains at the lower part of the control groove 27 when it is not subjected to force.

[0036] When the driving 12 is started, the rotating shaft and the branch shaft 23 are rotated. During the normal mowing process of the mower, the convex shaft 26 is kept in the lower part of the control groove 27 by the compression spring 28. At this time, the rotation of the branch shaft 23 will drive the convex shaft 26 to rotate through the transmission of the mounting ring 24 and the moving ring 25. However, the convex shaft 26 cannot move upward relative to the control groove 27 due to the force applied thereto. Therefore, the convex shaft 26 will drive the fixed sleeve 22 to rotate relative to the mounting sleeve 21 through the control groove 27, thereby controlling the rotation of the blade 13 and enabling the blade 13 to mow the grass. When the blade 13 is in contact with a stone, the blade 13 is stopped from rotating by the stone from a microscopic perspective. The fixed sleeve 22 generates a force that can resist the convex shaft 26. Therefore, the convex shaft 26 is pressed to move upward relative to the control groove 27 under the action of the control groove 27. The compression spring 28 is compressed. After the convex shaft 26 passes the highest position of the control groove 27, the compression spring 28 drives the convex shaft 26 to move downward until the lowest position. The convex shaft 26 is again moved upward by the control groove 27. Such reciprocation enables the convex shaft 26 to move in the control groove 27 in a cycle. From a macroscopic perspective, the force generated by the rotation of the blade 13 can be reduced by the convex shaft 26, the control groove 27, and the compression spring 28. Therefore, the interaction force generated when the blade 13 is in hard contact with the stone is reduced. In turn, the loss rate of the blade 13 due to the abrasion of the stone is reduced, and the possibility of the stone being hit away is reduced. The use safety of the mower is improved. When the blade 13 is no longer in contact with the stone, the compression spring 28 resumes deformation and acts on the convex shaft 26, so that the convex shaft 26 is again kept in the lower part of the control groove 27, and the original cutting function of the blade 13 is restored.

[0037] The Y-shaped handle 14 enables the worker's hands to apply force separately, thereby enabling the worker to better control the use of the mower and facilitating the use of the mower.

[0038] Referring to Figures 6-7 The mounting ring 24 is slidably mounted on the branch shaft 23 and further includes a connecting ring 31 rotatably mounted on the mounting ring 24, two mounting blocks 32 fixedly mounted on the inner side wall of the mounting sleeve 21, a screw rod 33 threadedly mounted on the lower mounting block 32, the screw rod 33 being rotatably mounted with the connecting ring 31, the screw rod 33 being capable of moving up and down by being reversely rotated, the screw rod 33 driving the mounting ring 24 to move up and down through the connecting ring 31, a sleeve rod 36 rotatably mounted on the upper mounting block 32, the sleeve rod 36 having a sliding groove formed on the inner wall thereof, a convex block formed on the screw rod 33, the convex block being capable of slidingly mounting the sleeve rod 36 with the screw rod 33 and enabling the screw rod 33 to rotate together with the sleeve rod 36, a rotating rod 34 rotatably mounted on the side wall of the mounting sleeve 21, two bevel gears 35 fixedly mounted on the end portions of the rotating rod 34 and the sleeve rod 36, respectively, and meshing with each other.

[0039] Rotating the rotating rod 34, through the transmission of the bevel gear 35, the control sleeve rod 36 is driven to rotate with the screw rod 33, and at the same time the screw rod 33 is controlled by the mounting block 32 to produce up and down displacement with the sleeve rod 36; when the screw rod 33 moves downward, it will drive the mounting ring 24 to move downward, and the compression spring 28 is compressed, so that the convex shaft 26 needs greater force to resist the compression spring 28 to produce equal displacement, so the blade 13 needs to give the fixed sleeve 22 greater resistance, so that the convex shaft 26 can move in the control groove 27 with the same cycle as before, otherwise, when the screw rod 33 moves upward, the blade 13 does not need to give the fixed sleeve 22 such excessive resistance, so that the convex shaft 26 can move in the control groove 27; Therefore, using the lawn mower, the hardness of the cut grass can be adjusted to avoid hard grass triggering the cooperation of the convex shaft 26 and the control groove 27, so as to ensure the cutting effect of the blade 13.

[0040] Referring to Figure 8 It also includes a protective plate 41 fixedly installed at the bottom of the mounting sleeve 21, the protective plate 41 is set as a semicircular type, the protective plate 41 covers the upper rear of the blade 13, prevents the blade 13 from accidentally injuring the worker at the rear position, and prevents foreign objects from being stuck in the blade 13 during rotation of the blade 13, reducing the influence of external factors on the normal use of the blade 13; a connecting joint 42 is arranged between the main rod 11 and the mounting sleeve 21, the connecting joint 42 is composed of a hard folding sleeve and a universal joint, the hard folding sleeve is fixedly installed between the main rod 11 and the mounting sleeve 21, so that the mounting sleeve 21 can rotate relative to the main rod 11, the angle between the mounting sleeve 21 and the main rod 11 is adjustable, and the adjusted angle between the mounting sleeve 21 and the main rod 11 is maintained, the universal joint is fixedly installed between the rotating shaft and the branch shaft 23, so that the angle between the rotating shaft and the branch shaft 23 is adjustable, the adjusted angle between the rotating shaft and the branch shaft 23 is maintained, and the transmission connection between the rotating shaft and the branch shaft 23 is maintained, so that before using the lawn mower, the angle between the blade 13 and the main rod 11 can be changed according to the use habits of different workers and the mowing needs of the lawn, so that the worker can use the lawn mower more conveniently and comfortably.

[0041] Referring to Figures 8-10 It also includes a top block 51 slidingly installed on the protective plate 41, the top block 51 is provided with four, and the top block 51 is annularly distributed outside the fixed sleeve 22; a reset spring 52 is fixedly installed between the top block 51 and the protective plate 41; an extrusion block 53 is fixedly installed outside the fixed sleeve 22, and the extrusion block 53 can contact the top block 51; a hollow slot 54 is formed in the mounting sleeve 21, which can move the extrusion block 53; a protective sleeve 71 is fixedly installed between the mounting sleeve 21 and the protective plate 41, and the protective sleeve 71 covers the outside of the top block 51.

[0042] When the blade 13 is driven 12 to rotate, the grass and trees may follow the rotation of the blade 13 and wind around the fixed sleeve 22, and in serious cases, the blade 13 will be stuck, which will affect the normal operation of the mower, so the top block 51 is provided to separate the grass and trees, and to avoid the grass and trees winding around the fixed sleeve 22 as much as possible; and at the same time when the blade 13 rotates, the fixed sleeve 22 rotates relative to the mounting sleeve 21, so that under the cooperation of the pressing block 53 and the return spring 52, the top block 51 can reciprocate to approach / away from the mounting sleeve 21 / fixed sleeve 22, so that the top block 51 actively separates the grass and trees, and improves the separation effect of the top block 51.

[0043] The protective sleeve 71 is used to protect the movement gap of the top block 51 on the protective plate 41, and prevent the movement path of the top block 51 from being stuck by the grass and trees.

[0044] Referring to Figure 11 It also includes a cleaning brush 61 fixedly installed on the top surface of the blade 13, and the bristles of the cleaning brush 61 are in contact with the protective plate 41; and a resisting rod 62 fixedly installed on the bottom of the protective plate 41, which can be in contact with the bristles of the cleaning brush 61.

[0045] The fine grass and trees that are trimmed may be adhered to the lower part of the protective plate 41 due to external factors such as static electricity, and in order to prevent this part of the grass and trees from accumulating too thick and affecting the rotation of the blade 13, the cleaning brush 61 is provided to brush off this part of the grass and trees, and the resisting rod 62 can handle the residual grass and trees on the cleaning brush 61, so as to ensure the normal function of the cleaning brush 61.

[0046] The above only describes the preferred embodiments of the present application, and should not be used to limit the present application, and any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application. The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the present application.

Claims

1. A hand-held lawn mower for landscaping, characterized by, The utility model relates to a cutting device for grass and wood, which comprises a main rod (11), a drive (12) fixedly connected to the main rod (11), a rotating shaft arranged in the main rod (11), the drive (12) controlling the rotating shaft to rotate, a blade (13) arranged at the lower part of the main rod (11), the drive (12) providing the rotating power for the blade (13) through the rotating shaft, a mounting sleeve (21) arranged at the lower part of the main rod (11), a fixed sleeve (22) rotatably connected to the lower part of the mounting sleeve (21), the fixed sleeve (22) being fixedly connected to the blade (13) so that the blade (13) is rotatably arranged at the lower part of the main rod (11), a branch shaft (23) arranged in the mounting sleeve (21) and the fixed sleeve (22), the rotating shaft being connected to the branch shaft (23) to control the branch shaft (23) to rotate, a mounting ring (24) arranged outside the branch shaft (23), the mounting ring (24) being capable of rotating together with the branch shaft (23), a moving ring (25) slidably connected below the mounting ring (24), the moving ring (25) being capable of rotating together with the mounting ring (24), a convex shaft (26) fixedly connected to the lower part of the moving ring (25), a ring V-shaped control groove (27) being formed in the inner side wall of the fixed sleeve (22) and being connected in a head-tail manner, the convex shaft (26) being slidably connected to the control groove (27), a compression spring (28) fixedly connected between the moving ring (25) and the mounting ring (24), the compression spring (28) acting so that the convex shaft (26) is kept at the lower part of the control groove (27) when it is not subjected to force, the mounting ring (24) being slidably connected to the branch shaft (23), further comprising a connecting ring (31) rotatably connected to the mounting ring (24), an installation block (32) fixedly connected to the side wall of the mounting sleeve (21), a screw rod (33) threadedly connected to the installation block (32), the screw rod (33) being rotatably connected to the connecting ring (31), the screw rod (33) being capable of moving up and down when being positively or reversely rotated, the mounting ring (24) being driven to move up and down through the connecting ring (31), a sleeve rod (36) rotatably connected to the installation block (32), the sleeve rod (36) being slidably connected to the screw rod (33), the screw rod (33) being capable of rotating together with the sleeve rod (36), a rotating rod (34) rotatably connected to the side wall of the mounting sleeve (21), bevel gears (35) fixedly connected to the end of the rotating rod (34) and the end of the sleeve rod (36) respectively, the two bevel gears (35) being engaged. Further comprising a protection plate (41) fixedly connected to the bottom of the mounting sleeve (21), the protection plate (41) being arranged in a semicircular shape and covering the rear upper part of the blade (13).

2. The hand-held lawn mower for landscaping according to claim 1, characterized in that, A connecting joint (42) is arranged between the main rod (11) and the mounting sleeve (21). Further comprising a top block (51) slidably connected to the protection plate (41), the top block (51) being annularly arranged outside the fixed sleeve (22) and being used for separating grass and wood from the outside of the fixed sleeve (22).

3. The hand-held lawn mower for landscaping according to claim 2, characterized in that, Further comprising 4. The hand-held lawn mower for landscaping according to claim 3, characterized in that ​ ​ 5. The hand-held lawn mower for landscaping according to claim 4, characterized in that ​ A reset spring (52) is fixedly connected between the top block (51) and the protective plate (41); an extrusion block (53) is fixedly connected outside the fixing sleeve (22), and the extrusion block (53) can contact the top block (51); and a hollow slot (54) is formed in the mounting sleeve (21) and can allow the extrusion block (53) to move.

6. The hand-held lawn mower for landscaping according to claim 5, characterized in that Further comprising: A cleaning brush (61) is fixedly connected to the top surface of the blade (13), and the bristles of the cleaning brush (61) contact the protective plate (41).

7. The hand-held lawn mower for landscaping according to claim 6, characterized in that Further comprising: A stopper (62) is fixedly connected to the bottom of the protective plate (41), and the stopper (62) can contact the bristles of the cleaning brush (61).

8. The hand-held lawn mower for landscaping according to claim 7, characterized in that Further comprising: A protective sleeve (71) is fixedly connected between the mounting sleeve (21) and the protective plate (41), and the protective sleeve (71) covers the top block (51).

9. The hand-held lawn trimmer of claim 8 wherein, Further comprising: A handle (14) is fixedly connected to the main rod (11), and the handle (14) and the main rod (11) form a Y-shaped type.

Images