Push mower

Abstract

The invention provides a grass pushing machine. The grass pushing machine comprises a machine body, a walking assembly, an adapter and a locking device. The walking assembly comprises a first walking wheel and a second walking wheel which are arranged front and back in the advancing direction of the grass pushing machine. The adapter is connected with the machine body and the first walking wheel, the first walking wheel is connected to the adapter, and the adapter is pivotally connected with the machine body; the locking device is configured to be capable of locking the adapter, so that the first walking wheel advances along a fixed direction relative to the machine body; the locking device has a first state and a second state, in the first state, the machine body is movably connected with the adapter, and the adapter rotates relative to the machine body; and in the second state, the machine body is clamped with the adapter, so that the first walking wheel moves in the fixed direction relative to the machine body. Compared with the prior art, the lawn mower can be freely switched between turning and straight moving, the control force for the first walking wheel is increased, and the situation that the first walking wheel deviates from a preset path due to random steering is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to a lawn mower, belonging to the technical field of gardens. BACKGROUND

[0002] The lawn mower is a repair tool for gardens, lawns and other places, and has been widely used. In the gradual replacement of lawn mower technology, the lawn mowing technology has matured, and how to improve the user experience has become a must-consider thing in the replacement process of the lawn mower.

[0003] However, in order to ensure stability during turning, the existing lawn mower usually limits the turning range, which undoubtedly causes inconvenience when using. In order to solve this problem, the most common way is to use universal wheels instead of conventional front wheels, but based on the multi-angle turning of universal wheels, it is difficult to ensure that the lawn mower always travels in a straight line in a specific scene or when needed.

[0004] Therefore, it is necessary to improve the existing lawn mower to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a lawn mower which can not only realize multi-angle turning, but also make the lawn mower always travel in a straight line in a specific scene or when needed.

[0006] In order to achieve the above purpose, the present application provides a lawn mower, comprising:

[0007] a machine body;

[0008] a walking assembly comprising a first walking wheel and a second walking wheel arranged forward and backward along the direction of travel of the lawn mower;

[0009] a switching piece connecting the machine body and the first walking wheel, the first walking wheel being connected to the switching piece, and the switching piece being pivotally connected to the machine body; and

[0010] a locking device configured to lock the switching piece so that the first walking wheel travels in a fixed direction relative to the machine body;

[0011] wherein the locking device has a first state and a second state, in the first state, the machine body and the switching piece are movably connected, and the switching piece rotates relative to the machine body; in the second state, the machine body and the switching piece are clamped, so that the first walking wheel travels in a fixed direction relative to the machine body.

[0012] As a further improvement of the present application, the first walking wheel is provided with two first walking wheels arranged opposite to each other, and the locking device is provided corresponding to each first walking wheel.

[0013] As a further improvement of the present application, a first hole is arranged on the body, a second hole is arranged on the adapter in correspondence, the first hole and the second hole are in mutual alignment for the locking device to pass through simultaneously, one end of the locking device is exposed on the side of the body away from the first walking wheel, the other end passes through the second hole, so that the adapter and the body remain relatively static.

[0014] As a further improvement of the present application, the locking device comprises a housing, a pin shaft accommodated inside the housing, and an elastic member sleeved outside the pin shaft, in a first state, the pin shaft penetrates into the first hole, and the elastic member is in a compressed state; in a second state, the pin shaft penetrates into the first hole and the second hole simultaneously, and the elastic member returns to a released state.

[0015] As a further improvement of the present application, a supporting platform is arranged on the side of the pin shaft facing the second hole, one end of the elastic member abuts against the inner wall surface of the first hole, and the other end abuts against the supporting platform.

[0016] As a further improvement of the present application, the housing comprises an upper housing and a lower housing assembled with each other, the lower housing has two first protrusions arranged oppositely on the side facing the upper housing, and a first recess connecting the two first protrusions, the first recess also has two recesses arranged oppositely, and the upper housing is correspondingly provided with a second protrusion matched with the first recess and a second recess matched with the first protrusion.

[0017] As a further improvement of the present application, the pin shaft is fixedly connected with the upper housing, when the second protrusion abuts against the first protrusion, the locking device is in the first state, the pin shaft is exposed between the first recess and the second recess, and the elastic member is in the compressed state; when the second protrusion abuts against the first recess, the locking device is in the second state, the upper housing and the lower housing are assembled with each other, the elastic member returns to the released state, and the pin shaft is clamped into the second hole.

[0018] As a further improvement of the present application, a third recess matched with the first protrusion is further arranged on the lower surface of the second protrusion.

[0019] As a further improvement of the present application, a screwing portion for screwing is further arranged on the top of the upper housing, and one end of the pin shaft is fixed to the screwing portion.

[0020] As a further improvement of the present application, a through hole is further arranged on the body, the through hole is for a bearing to pass through to movably connect the first walking wheel and the body.

[0021] The beneficial effects of the present application are: the grass pushing machine of the present application can lock the adapter through the locking device arranged near the first walking wheel, so that the first walking wheel travels in a fixed direction relative to the machine body. Compared with the prior art, the grass pushing machine of the present application not only can realize multi-angle steering, but also can always travel in a straight line in a specific scene or when needed. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of a grass pushing machine in accordance with the preferred embodiment of the present application.

[0023] Figure 2 is Figure 1 is a structural schematic view of the grass pushing machine after hiding part of the machine body, the walking assembly and the handle assembly.

[0024] Figure 3 is Figure 2 is an exploded view of the locking device.

[0025] Figure 4 is Figure 3 is a structural schematic view of the upper shell.

[0026] Figure 5 is Figure 3 is a structural schematic view of the lower shell.

[0027] Figure 6 is Figure 2 is a partial schematic view of the locking device in the first state.

[0028] Figure 7 is Figure 2 is a partial schematic view of the locking device in the second state. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be described in detail below in combination with the drawings and specific embodiments.

[0030] Please refer to Figure 1 , the present application discloses a grass pushing machine 100, which comprises a machine body 1, a walking assembly 2 arranged below the machine body 1, a cutting assembly 3, and a handle assembly 4 located at the rear of the machine body 1 and extending obliquely upward. The handle assembly 4 comprises a push rod 41 connected to the machine body 1, and a handle 42 arranged at the end of the push rod 41. A control panel 5 is arranged at the top of the push rod 41 and connected to the handle 42. The handle 42 is used for the operator to hold to control the grass pushing machine 100. The control panel 5 is used to control the start and stop of the grass pushing machine 100, the self-propelled and steering of the walking assembly 2, and the rotating speed of the cutting assembly 3, etc.

[0031] Specifically, the walking assembly 2 comprises walking wheels arranged on opposite sides of the machine body 1. In the advancing direction of the lawn mower 100, the walking wheels comprise first walking wheels 21 and second walking wheels 22 arranged in front and back. The first walking wheels 21 are respectively arranged on the left and right sides of the front end of the machine body 1 and are pivotally connected to the machine body 1. The second walking wheels 22 are respectively arranged on the left and right sides of the rear end of the machine body 1 and are pivotally connected to the machine body 1. It can be understood that the second walking wheels 22 are driven by a hub motor, and the first walking wheels 21 are only guide wheels. For the convenience of description, the advancing direction of the lawn mower 100 is defined as the front-rear direction, and the width direction of the lawn mower 100 is defined as the left-right direction, and the front-rear direction is perpendicular to the left-right direction.

[0032] In this embodiment, the first walking wheels 21 are universal wheels, which can be turned in any direction as needed to adapt to different environments.

[0033] Please refer to Figure 2 and Figure 3 In this embodiment, the machine body 1 is movably connected to the first walking wheels 21, so that the first walking wheels 21 can be universally rotated relative to the machine body 1. A connecting piece 211 is arranged between the machine body 1 and the first walking wheels 21. The connecting piece 211 comprises a fixed part 2111 fixedly connected to the first walking wheels 21 and a movable part 2112 movably connected to the machine body 1. The first walking wheels 21 are movably connected to the machine body 1 through the connecting piece 211.

[0034] Preferably, the fixed part 2111 is provided with two fixed parts 2111, which are respectively arranged on the two sides of the first walking wheels 21. The fixed part 2111 is fixedly connected to the rotation shaft of the first walking wheels 21, so as to drive the advancing of the lawn mower 100 through the first walking wheels 21 without affecting the rotation of the first walking wheels 21.

[0035] The machine body 1 is provided with a through hole (not shown) corresponding to the position of the movable part 2112. The through hole is used for the bearing 111 to pass through to movably connect the first walking wheels 21 and the machine body 1. Preferably, the movable part 2112 is provided with a through hole 2110 corresponding thereto. The through hole 2110 is aligned with the through hole to be passed through by the bearing 111. One end of the bearing 111 is fixedly connected to the movable part 2112 after passing through the through hole 2110. In this way, the first walking wheels 21 are turned relative to the lawn mower 100 through the connecting piece 211 and the bearing 111, thereby driving the turning of the entire lawn mower 100.

[0036] The side of the machine body 1 close to the through hole is also provided with a locking device 12, which is configured to orient the first walking wheel 21 so that it cannot turn. That is, by providing the locking device 12, the grass mower 100 can only travel in a fixed direction, i.e. straight, and cannot turn. Preferably, the locking device 12 is provided corresponding to each first walking wheel 21.

[0037] Preferably, the machine body 1 is provided with a first hole 113, and the movable part 2112 of the adapter 211 is provided with a second hole 2113 corresponding to the first hole 113, the first hole 113 and the second hole 2113 are aligned with each other to allow the locking device 12 to pass through at the same time, one end of the locking device 12 is exposed on the side of the machine body 1 away from the first walking wheel 21, and the other end passes through the second hole 2113, so that the adapter 211 and the machine body 1 remain relatively stationary.

[0038] Preferably, when one end of the locking device 12 passes through the second hole 2113, the adapter 211 is double-positioned by the bearing 111 and the locking device 12, and is limited to a straight line. When the line connecting the first hole 113 and the through hole is a horizontal line, the first walking wheel 21 travels straight.

[0039] Specifically, please refer to Figures 3 to 5 The locking device 12 includes an upper shell 121, a lower shell 122, and a pin shaft 123 passing through the first hole 113 and the second hole 2113, the lower shell 122 is fixed on the machine body 1 by screws, the upper shell 121 is arranged above the lower shell 122 and abuts against the lower shell 122, and the upper shell 121 and the lower shell 122 are combined to form a housing of the locking device 12, which is hollow to allow the pin shaft 123 to pass through.

[0040] The locking device 12 has a first state and a second state, when in the first state, the pin shaft 123 is not clamped into the second hole 2113, at this time, the adapter 211 is in a movable state and can rotate relative to the machine body 1 in all directions; when in the second state, the pin shaft 123 is clamped into the second hole 2113, at this time, the adapter 211 is clamped with the locking device 12, and is double-positioned by the bearing 111 and the pin shaft 123, so that the first walking wheel 21 travels straight.

[0041] Preferably, the locking device 12 further comprises an elastic member 125 inside the first hole 113, the elastic member 125 is sleeved outside the pin shaft 123, the pin shaft 123 is provided with a supporting table 1231 on one side facing the second hole 2113, one end of the elastic member 125 abuts against the inner wall surface of the first hole 113 on the side away from the lower shell 122, and the other end abuts against the supporting table 1231. That is, the elastic member 125 is located between the first hole 113 and the supporting table 1231, and can be compressed during the movement of the supporting table 1231 of the pin shaft 123 towards the lower shell 122.

[0042] Preferably, as shown in Figure 6 When the locking device 12 is in the first state, the elastic member 125 is compressed, and the pin shaft 123 is separated from the second hole 2113; as shown in Figure 7 When the locking device 12 is in the second state, the elastic member 125 is elastically reset to make the pin shaft 123 clamped into the second hole 2113. In this way, the control of the straight travel and steering of the first walking wheel 21 is realized.

[0043] The lower shell 122 is provided with two first protruding parts 1221 on the side facing the upper shell 121, and a first recessed part 1222 connecting the two first protruding parts 1221, and the first recessed part 1222 is also provided with two and opposite.

[0044] The upper shell 121 is correspondingly provided with a second protruding part 1211 and a second recessed part 1212, the first protruding part 1221 and the second recessed part 1212 are matched with each other, and the first recessed part 1222 and the second protruding part 1211 are matched with each other, so that the upper shell 121 and the lower shell 122 can be assembled to form a complete shell.

[0045] The pin shaft 123 is fixedly connected with the upper shell 121, when the second protruding part 1211 abuts against the first protruding part 1221, the locking device 12 is in the first state, the pin shaft 123 is lifted by the upper shell 121 and exposed between the first recess part 1222 and the second recess part 1212, and the elastic piece 125 is in the compressed state; when the second protruding part 1211 abuts against the first recess part 1222, the locking device 12 is in the second state, the upper shell 121 and the lower shell 122 are combined with each other, the elastic piece 125 returns to the released state, and the pin shaft 123 is clamped into the second hole 2113. That is, by adjusting the position between the upper shell 121 and the lower shell 122, the height of the pin shaft 123 above the first hole 113 is adjusted to be clamped into the second hole 2113 or outside the second hole 2113, thereby the advancing state of the first walking wheel 21 is adjusted.

[0046] Preferably, the lower surface of the second protruding part 1211 is provided with a third recess part 1213, which is matched with the first protruding part 1221, so that the second protruding part 1211 can stably abut above the first protruding part 1221 and not easily fall off.

[0047] The top of the upper shell 121 is further provided with a screwing part 124 for screwing, one end of the pin shaft 123 is fixed with the screwing part 124, so that when the screwing part 124 is screwed, the pin shaft 123 can be synchronously rotated, thereby switching the locking device 12 between the first state and the second state.

[0048] In summary, the grass pushing machine 100 sets the locking device 12 at the position of the machine body 1 relative to the first walking wheel 21, so that the straight running or turning of the first walking wheel 21 is controlled by screwing the locking device 12, to meet different use requirements of the operator, and the application range is expanded; at the same time, the locking device 12 is arranged close to the first walking wheel 21, so that the adapter 211 is locked by the locking device 12, thereby making the first walking wheel 21 run in the fixed direction relative to the machine body 1.

[0049] The above embodiments are only used to illustrate the technical solutions of the present application rather than limit the present application, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A lawn mower characterized by comprising: The utility model relates to a mowing machine, comprising: a machine body; a walking assembly comprising a first walking wheel and a second walking wheel arranged in front and back along the mowing machine's direction of travel; a connecting piece connecting the machine body and the first walking wheel, the first walking wheel being connected to the connecting piece, and the connecting piece being pivotally connected to the machine body; and a locking device configured to lock the connecting piece so that the first walking wheel travels in a fixed direction relative to the machine body; wherein the locking device has a first state and a second state, in the first state, the machine body and the connecting piece are movably connected, and the connecting piece rotates relative to the machine body; in the second state, the machine body and the connecting piece are clamped, so that the first walking wheel travels in a fixed direction relative to the machine body. The first walking wheel is provided with two first walking wheels arranged oppositely, and each first walking wheel is provided with the locking device correspondingly.

2. The lawn roller of claim 1, wherein The machine body is provided with a first hole, and the connecting piece is provided with a second hole correspondingly, the first hole and the second hole are opposite to each other, so that the locking device passes through simultaneously.

3. The lawn roller of claim 1, wherein, The locking device comprises a shell, a pin shaft contained in the shell, and an elastic piece sleeved outside the pin shaft, in the first state, the pin shaft penetrates into the first hole, and the elastic piece is in a compressed state; 4. The lawn roller of claim 3, wherein in the second state, the pin shaft penetrates into the first hole and the second hole simultaneously, and the elastic piece returns to normal. The side of the pin shaft towards the second hole is provided with a table, one end of the elastic piece abuts against the inner wall surface of the first hole, and the other end abuts against the table.

5. The lawn roller of claim 4, wherein, The shell comprises an upper shell and a lower shell assembled with each other, the side of the lower shell towards the upper shell is provided with two first protruding parts arranged oppositely, and a first recess part connecting the two first protruding parts, the first recess part is also provided with two first recess parts arranged oppositely, and the upper shell is provided with a second protruding part matched with the first recess part and a second recess part matched with the first protruding part correspondingly.

6. The lawn roller of claim 4, wherein, The pin shaft is fixedly connected to the upper shell, when the second protruding part abuts against the first protruding part, the locking device is in the first state, the pin shaft is exposed between the first recess part and the second recess part, and the elastic piece is in a compressed state; when the second protruding part abuts against the first recess part, the locking device is in the second state, the upper shell and the lower shell are combined with each other, the elastic piece returns to a released state, and the pin shaft is clamped into the second hole.

7. The lawn roller of claim 6, wherein, The lower surface of the second protruding part is also provided with a third recess part matched with the first protruding part.

8. The lawn roller of claim 6, wherein, The top of the upper shell is also provided with a screwing part for screwing, and one end of the pin shaft is fixed to the screwing part.

9. The lawn roller of claim 6, wherein, The machine body is also provided with a through hole, the through hole is for a bearing to pass through, so that the first walking wheel and the machine body are movably connected.

10. The lawn roller of claim 1, wherein, ​

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