Lawn mower

Abstract

The utility model relates to the technical field of garden machinery, in particular to a mower which comprises a mower body, a motor, a driving shaft, wheels and a connecting column, the driving shaft is rotatably connected to the mower body, the motor is used for driving the driving shaft to rotate, the wheels are coaxially connected to the driving shaft, the wheels are coaxially connected with sleeves, the driving shaft is provided with limiting holes, and the sleeves are provided with connecting holes. The connecting hole is used for being communicated with the limiting hole, and the connecting shaft is embedded in the connecting hole and the limiting hole to achieve circumferential fixation of the wheel and the driving shaft. When the mower works normally, the connecting columns are embedded in the limiting holes and the connecting holes, circumferential fixation of the wheels and the driving shaft is achieved, the motor can effectively drive the driving shaft to rotate, when the motor is damaged, the connecting columns are taken out, the wheels can rotate relative to the driving shaft, and a user can conveniently push the mower body to drive the wheels to rotate, so that the mower body moves; the moving difficulty of the mowing machine under the condition of motor fault is reduced, and the practicability and convenience of the mowing machine are improved.

Description

Technical Field

[0001] This application relates to the technical field of garden machinery, and in particular to a lawnmower. Background Technology

[0002] A lawnmower, also known as a lawn trimmer, is a mechanical tool used for mowing lawns and vegetation. With increasing environmental awareness, green areas in major cities are expanding, and the variety of turf types is becoming more diverse. The rapid development of the lawn industry has led to a growing demand for lawnmowers.

[0003] A lawnmower moves by rotating wheels powered by a motor to mow grass. When the motor fails, the user needs to carry or push the lawnmower. The lawnmower is heavy, and the rotation of the wheels to drive the motor's output shaft requires overcoming significant resistance, making it inconvenient to move the lawnmower after the motor fails. Utility Model Content

[0004] To facilitate the movement of the lawnmower and improve its practicality, this application provides a lawnmower.

[0005] The lawnmower provided in this application adopts the following technical solution:

[0006] A lawnmower includes a lawnmower body, a motor, a drive shaft, wheels, and a connecting post. The drive shaft is rotatably connected to the lawnmower body, and the axis of rotation of the drive shaft is horizontal. The motor is connected to the lawnmower body and is used to drive the drive shaft to rotate. The wheels are coaxially connected to the outer circumference of the drive shaft, and a sleeve is coaxially connected to the wheels. The sleeve is fitted onto the outer circumference of the drive shaft. The drive shaft has a limiting hole, the axis of which is perpendicular to the axis of the drive shaft. The sleeve has a connecting hole for communicating with the limiting hole. The connecting post is embedded in the connecting hole and the limiting hole to achieve circumferential fixation of the wheels and the drive shaft.

[0007] By adopting the above technical solution, when the motor is working normally, the connecting post is embedded in the limiting hole and the connecting hole, so that the wheel and the drive shaft are circumferentially fixed. The motor can effectively drive the drive shaft to rotate, thereby driving the wheel to rotate and realizing the autonomous movement of the lawnmower. When the motor is damaged, the connecting post can be removed, and the wheel can rotate relative to the drive shaft. This makes it easy for the user to push the lawnmower body to drive the wheel to rotate and realize the movement of the lawnmower body. This reduces the difficulty of moving the lawnmower in the event of motor failure and improves the practicality and convenience of the lawnmower.

[0008] Preferably, it also includes a fixing pin, a limiting ring is connected to the outer periphery of one end of the connecting post, a fixing hole is provided on the outer wall of the connecting post away from the limiting ring, and the fixing pin is embedded in the fixing hole.

[0009] By adopting the above technical solution, a limiting ring is connected to the outer periphery of one side of the connecting column, and a fixing pin is embedded in the fixing hole on the other side of the connecting column to prevent the connecting column from disengaging from the limiting hole and the connecting hole. When it is necessary to remove the connecting column, the fixing pin can be removed from the fixing hole, so that the connecting column can smoothly disengage from the limiting hole and the connecting hole, thereby improving the reliability and convenience of the lawnmower.

[0010] Preferably, the fixing pin includes an embedding section, a limiting section, and a connecting section. The connecting section is arc-shaped. One end of the embedding section is connected to the connecting section, and one end of the limiting section is connected to the other end of the connecting section. The embedding section is embedded in the fixing hole, and the limiting section abuts against the outer wall of the connecting post.

[0011] By adopting the above technical solution, when the fixing pin and the connecting post are connected, the limiting section is bent away from the embedding section, the embedding section is embedded into the fixing hole, the limiting section is released, and the limiting section is pressed against the outer wall of the connecting post, so as to realize the connection between the fixing pin and the connecting post, reduce the possibility of the fixing pin loosening and falling off during use, and improve the reliability and safety of the lawnmower.

[0012] Preferably, the end of the limiting segment away from the connecting segment is inclined to the side away from the embedding segment, and the limiting segment is provided with a limiting groove, the groove wall of which abuts against the outer wall of the connecting column.

[0013] By adopting the above technical solution, the movement of the limiting section away from the connecting section guides the installation of the fixing pin, improving the convenience of fixing pin installation. The limiting section is provided with a limiting groove, and the groove wall abuts against the outer wall of the connecting column, improving the stability of the connection between the fixing pin and the connecting column.

[0014] Preferably, the outer periphery of the wheel is connected with a plurality of protrusions, and the plurality of protrusions are distributed at intervals along the circumference of the wheel.

[0015] By adopting the above technical solution, several protrusions are connected to the outer periphery of the wheel. These protrusions are distributed at intervals along the circumference of the wheel, which increases the friction between the wheel and the ground, reduces the possibility of wheel slippage during the movement of the lawnmower, and improves the practicality and applicability of the lawnmower.

[0016] Preferably, the bumps are divided into two groups, and the two groups of bumps are symmetrically distributed along the wheel rotation axis.

[0017] By adopting the above technical solution, the bumps are divided into two groups and symmetrically distributed along the wheel rotation axis, which enhances the wheel's grip and stability, helps the lawnmower to operate on surfaces with different coefficients of friction, and improves the lawnmower's applicability.

[0018] Preferably, the two groups of protrusions are staggered.

[0019] By adopting the above technical solution, two groups of several protrusions are symmetrically distributed and staggered along the wheel rotation axis, which can disperse and reduce the vibration and noise caused by the contact between the protrusions and the ground during the wheel rolling process, thereby improving the smoothness and comfort of the lawnmower operation.

[0020] Preferably, there are four wheels, which are divided into two groups. The two groups of wheels are symmetrically distributed along the wheel rotation axis. Two wheels in the same group are spaced apart along a line perpendicular to the wheel rotation axis. The number of drive shafts and motors is the same as the number of wheels and corresponds one-to-one.

[0021] By adopting the above technical solution, four wheels are set up, and the number of motors is the same as the number of wheels and corresponds one-to-one, making the lawnmower four-wheel drive. By using different motors with different speeds, the different wheels will have different speeds, thus realizing the steering of the lawnmower and improving the convenience of lawnmower operation.

[0022] Preferably, the device also includes a speed reducer, the number of which is the same as the number of motors and corresponds one-to-one. The speed reducer is connected to the lawnmower body, the output shaft of the motor is coaxially connected to the input shaft of the speed reducer, and the output shaft of the speed reducer is coaxially connected to the drive shaft.

[0023] By adopting the above technical solution, the speed reducer can effectively reduce the output speed of the motor and increase the torque, thereby ensuring the smooth rotation of the drive shaft and improving the working stability and efficiency of the lawnmower.

[0024] Preferably, the handle is U-shaped, and the two ends of the handle are respectively connected to the two sides of the lawnmower body along the wheel rotation axis.

[0025] By adopting the above technical solution and setting a U-shaped handle, users can easily move the lawnmower by pushing it when the motor is damaged, thus improving the practicality and convenience of the lawnmower.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. When the motor is working normally, the connecting post is embedded in the limiting hole and the connecting hole, which fixes the wheel and the drive shaft circumferentially. The motor can effectively drive the drive shaft to rotate, which in turn drives the wheel to rotate, enabling the lawnmower to move autonomously. When the motor is damaged, the connecting post can be removed, and the wheel can rotate relative to the drive shaft. This allows the user to push the lawnmower body to drive the wheel to rotate, thus moving the lawnmower body. This reduces the difficulty of moving the lawnmower in the event of motor failure and improves the practicality and convenience of the lawnmower.

[0028] 2. A limiting ring is connected to one side of the connecting post, and a fixing pin is embedded in the fixing hole on the other side of the connecting post. This is used to prevent the connecting post from disengaging from the limiting hole and the connecting hole. When it is necessary to remove the connecting post, the fixing pin can be removed from the fixing hole, so that the connecting post can be smoothly disengaged from the limiting hole and the connecting hole, thereby improving the reliability and convenience of the lawnmower.

[0029] 3. When connecting the fixing pin and the connecting post, bend the limiting section away from the embedding section, embed the embedding section into the fixing hole, loosen the limiting section so that the limiting section presses against the outer wall of the connecting post, thus connecting the fixing pin and the connecting post, reducing the possibility of the fixing pin loosening and falling off during use, and improving the reliability and safety of the lawnmower. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a lawnmower.

[0031] Figure 2 It is a partial sectional view of a lawnmower, mainly showing the connection between the motor, reducer, drive shaft and wheels.

[0032] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0033] Figure 4 It is a partial sectional view of a lawnmower, mainly showing the connection between the connecting post, drive shaft, and sleeve.

[0034] Figure 5 yes Figure 1 Enlarged view of point B in the middle.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Lawn mower body; 11. First threaded post; 12. Mounting slot;

[0037] 2. Electric motor;

[0038] 3. Drive shaft; 31. Limiting hole; 32. Second threaded post;

[0039] 4. Wheel; 41. Hub; 411. Sleeve; 4111. Connecting hole; 412. Connecting hole; 42. Tire; 421. Protrusion;

[0040] 5. Connecting post; 51. Limiting ring; 52. Fixing hole;

[0041] 6. Fixing pin; 61. Embedded section; 62. Limiting section; 621. Limiting groove; 63. Connecting section;

[0042] 7. Gearbox;

[0043] 8. Handle; 81. First mounting hole;

[0044] 91. First fixing nut; 92. Second fixing nut. Detailed Implementation

[0045] The present application will be further described in detail below with reference to the accompanying drawings.

[0046] Reference Figure 1 This application discloses a lawnmower including a lawnmower body 1, a handle 8, and first fixing nuts 91. First threaded posts 11 are fixedly connected to both sides of the lawnmower body 1 along its width direction. The first threaded posts 11 are located on the side of the lawnmower body 1 closest to its upper end. There are four first threaded posts 11, with two on the same side spaced apart along the length direction of the lawnmower. The handle 8 is U-shaped, with both ends fixedly connected to both sides of the lawnmower body 1 along its width direction. The handle 8 has first mounting holes 81, the number of which corresponds to the number of first threaded posts 11, and the first threaded posts 11 are embedded in the first mounting holes 81. The number of first fixing nuts 91 corresponds to the number of first threaded posts 11, and the first fixing nuts 91 are threadedly connected to the first threaded posts 11, pressing against the side of the handle 8 away from the lawnmower body 1.

[0047] Reference Figure 1 and Figure 2 A lawnmower also includes a motor 2, a reducer 7, and a drive shaft 3. The lawnmower body 1 has four mounting slots 12 along its width direction on its sidewall. These four slots are divided into two groups, symmetrically distributed along the width direction of the lawnmower body 1. Two mounting slots in the same group are spaced apart along the length direction of the lawnmower body 1. The number of motors 2, reducers 7, and drive shafts 3 corresponds one-to-one with the number of mounting slots 12. The drive shaft 3 is rotatably connected to the lawnmower body 1, and its rotation axis is parallel to the width direction of the lawnmower body 1. The motor 2 is connected to the lawnmower body 1 and drives the drive shaft 3 to rotate. In this embodiment, the housing of the motor 2 is embedded in the mounting slot 12, and the output shaft of the motor 2 extends out of the mounting slot 12. The reducer 7 is fixedly connected to the sidewall of the lawnmower body 1 along its width direction. The output shaft of motor 2 is coaxially and fixedly connected to the input shaft of reducer 7, and one end of drive shaft 3 is coaxially and fixedly connected to the output shaft of reducer 7.

[0048] Reference Figure 1 and Figure 3A lawnmower also includes a wheel 4 and a second fixing nut 92. The wheel 4 includes a hub 41 and a tire 42. The hub 41 has a coaxially connected connecting hole 412. A drive shaft 3 is coaxially embedded in the connecting hole 412, with the outer wall of the drive shaft 3 fitting against the wall of the connecting hole 412. A sleeve 411 is coaxially fixedly connected to the side of the hub 41 away from the reducer 7, with the inner wall of the sleeve 411 flush with the wall of the connecting hole 412. The side of the hub 41 away from the sleeve 411 fits against the side of the reducer 7 away from the lawnmower body 1. A second threaded post 32 is coaxially fixedly connected to the end of the drive shaft 3 away from the reducer 7, and a second fixing nut 92 is threadedly connected to the second threaded post 32, abutting against the end of the sleeve 411 away from the reducer 7. The tire 42 is coaxially and fixedly connected to the outer periphery of the hub 41. A plurality of protrusions 421 are fixedly connected to the outer periphery of the tire 42. These protrusions 421 are divided into two groups, symmetrically distributed along the axis of the hub 41. Within each group, the protrusions 421 are spaced apart along the circumference of the tire 42, and the two groups are staggered. In this embodiment, there are twenty protrusions 421, with ten protrusions 421 in each group evenly distributed along the circumference of the tire 42.

[0049] Reference Figure 1 and Figure 4 A lawnmower also includes connecting posts 5, and the number of connecting posts 5 and fixing pins 6 is the same as the number of drive shafts 3 and corresponds one-to-one. The drive shaft 3 is provided with limiting holes 31, the axis of which is perpendicular to the axis of the drive shaft 3, and the axis of the limiting hole 31 is coplanar with the axis of the drive shaft 3. Both ends of the limiting hole 31 pass through the drive shaft 3. A sleeve 411 has two connecting holes 4111 on its inner wall, spaced apart around the axis of the sleeve 411, with the axes of the two connecting holes 4111 coplanar with the axis of the sleeve 411. The connecting holes 4111 are used to communicate with the limiting holes 31. The connecting post 5 is embedded in the connecting hole 4111 and the fixing hole 52 to achieve circumferential fixation of the sleeve 411 and the drive shaft 3. A limit ring 51 is coaxially fixedly connected to the outer circumference of one end of the connecting post 5. The other end of the connecting post 5 passes through the connecting hole 4111, the fixing hole 52 and the connecting hole 4111 in sequence and then extends out of the sleeve 411. The outer wall of the connecting post 5 fits against the wall of the connecting hole 4111 and the fixing hole 52.

[0050] Reference Figure 1 and Figure 5A lawnmower also includes a fixing pin 6. A fixing hole 52 is provided on the outer wall of the connecting post 5 on the side away from the limiting ring 51. The axis of the fixing hole 52 is perpendicular to the axis of the connecting post 5, and the axis of the fixing hole 52 is coplanar with the axis of the connecting post 5. Both ends of the fixing hole 52 pass through the connecting post 5. The fixing pin 6 includes an insert section 61, a connecting section 63, and a limiting section 62. One end of the insert section 61 is fixedly connected to one end of the connecting section 63, and the other end of the insert section 61 passes through the fixing hole 52. The connecting section 63 is arc-shaped, and the other end of the limiting section 62 is fixedly connected to the end of the connecting section 63 away from the insert section 61. The limiting section 62 is located on the same side of the connecting section 63 along the length direction of the insert section 61. The end of the limiting section 62 away from the connecting section 63 is inclined towards the side away from the insert section 61. The limiting section 62 has a limiting groove 621, and the groove wall of the limiting groove 621 is used to abut against the outer wall of the connecting post 5.

[0051] The implementation principle of a lawnmower according to an embodiment of this application is as follows: During normal use, the connecting post 5 is inserted into the connecting hole 4111 and the limiting hole 31 to fix the wheel 4 and the drive shaft 3 circumferentially. The embedding section 61 is embedded into the fixing hole 52. The end of the limiting section 62 away from the connecting section 63 abuts against the outer wall of the connecting post 5, causing the limiting section 62 to rotate away from the embedding section 61, pushing the connecting section 63, so that the connecting post 5 is embedded in the limiting groove 621, and the outer wall of the connecting post 5 abuts against the groove wall of the limiting groove 621. The motor 2 works, and drives the wheel 4 to rotate through the reducer 7 and the drive shaft 3, so that the lawnmower body 1 moves.

[0052] If motor 2 is damaged or the lawnmower loses power, pull the connecting section 63 to drive the connecting post 5 out of the limiting groove 621, so that the embedded section 61 is out of the fixing hole 52. Pull the limiting ring 51 to drive the connecting post 5 out of the connecting hole 4111 and the limiting hole 31, release the circumferential fixation of the wheel 4 and the drive shaft 3, push the handle 8 to drive the wheel 4 to rotate relative to the drive shaft 3, so that the lawnmower can move.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lawnmower, characterized in that: The system includes a lawnmower body (1), a motor (2), a drive shaft (3), wheels (4), and a connecting column (5); the drive shaft (3) is rotatably connected to the lawnmower body (1); the axis of rotation of the drive shaft (3) is horizontal; the motor (2) is connected to the lawnmower body (1); the motor (2) is used to drive the drive shaft (3) to rotate; the wheels (4) are coaxially connected to the outer circumference of the drive shaft (3); and the wheels (4) are coaxially connected to a sleeve (411). The sleeve (411) is fitted around the outer periphery of the drive shaft (3); the drive shaft (3) is provided with a limiting hole (31); the axis of the limiting hole (31) is perpendicular to the axis of the drive shaft (3); the sleeve (411) is provided with a connecting hole (4111); the connecting hole (4111) is used to communicate with the limiting hole (31); the connecting post (5) is embedded in the connecting hole (4111) and the limiting hole (31) to achieve circumferential fixation of the wheel (4) and the drive shaft (3).

2. The lawnmower according to claim 1, characterized in that: It also includes a fixing pin (6); a limiting ring (51) is connected to the outer periphery of one end of the connecting post (5); a fixing hole (52) is provided on the outer wall of the connecting post (5) away from the limiting ring (51); the fixing pin (6) is embedded in the fixing hole (52).

3. The lawnmower according to claim 2, characterized in that: The fixing pin (6) includes an embedding section (61), a limiting section (62), and a connecting section (63); the connecting section (63) is arc-shaped; one end of the embedding section (61) is connected to the connecting section (63); one end of the limiting section (62) is connected to the other end of the connecting section (63); the embedding section (61) is embedded in the fixing hole (52); the limiting section (62) abuts against the outer wall of the connecting post (5).

4. The lawnmower according to claim 3, characterized in that: The limiting section (62) is inclined at one end away from the connecting section (63) and away from the embedding section (61); the limiting section (62) is provided with a limiting groove (621); the groove wall of the limiting groove (621) abuts against the outer wall of the connecting column (5).

5. The lawnmower according to claim 1, characterized in that: The outer periphery of the wheel (4) is connected to a plurality of protrusions (421); the plurality of protrusions (421) are distributed at intervals along the circumference of the wheel (4).

6. The lawnmower according to claim 5, characterized in that: The bumps (421) are divided into two groups; the two groups of bumps (421) are symmetrically distributed along the rotation axis of the wheel (4).

7. The lawnmower according to claim 6, characterized in that: Two sets of several of the aforementioned bumps (421) are misaligned.

8. The lawnmower according to claim 1, characterized in that: There are four wheels (4); the four wheels (4) are divided into two groups; the two groups of wheels (4) are symmetrically distributed along the rotation axis of the wheels (4); the two wheels (4) in the same group are distributed at intervals along the rotation axis perpendicular to the wheel (4); the number of drive shafts (3) and motors (2) is the same as the number of wheels (4) and corresponds one-to-one.

9. The lawnmower according to claim 8, characterized in that: It also includes a speed reducer (7); the number of speed reducers (7) is the same as the number of motors (2) and they correspond one-to-one; the speed reducer (7) is connected to the lawnmower body (1); the output shaft of the motor (2) is coaxially connected to the input shaft of the speed reducer (7); the output shaft of the speed reducer (7) is coaxially connected to the drive shaft (3).

10. The lawnmower according to claim 1, characterized in that: It also includes a handle (8); the handle (8) is U-shaped; the two ends of the handle (8) are respectively connected to the two sides of the lawnmower body (1) along the rotation axis of the wheel (4).

Images