Push mower

Abstract

The utility model provides a grass pushing machine which comprises a machine body, a cutting assembly, a walking assembly and a handle assembly, the cutting assembly and the walking assembly are located below the machine body, the handle assembly obliquely extends upwards from the rear portion of the machine body, and the handle assembly comprises a push rod and a grip. Wherein the two push rods are connected with the machine body; the two grips are respectively positioned at the tail ends of the corresponding push rods and are oppositely arranged; each grip comprises a first switch, a second switch, a first triggering element and a second triggering element, the first switch and the second switch are oppositely arranged, the first switch is triggered by the first triggering element in an operable mode, the second switch is triggered by the second triggering element in an operable mode, and the first switches on the two grips are connected in parallel. Compared with the prior art, the lawn mower has the advantages that the first trigger element and the second trigger element are integrated on the grip, and the two first switches are connected in parallel, so that redundant functions of a control panel are avoided, operation steps are simplified, and the use experience of an operator is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a grass pushing machine belongs to garden tool technical field. BACKGROUND

[0002] The grass pushing machine is used as the repair tool of garden, lawn and so on, has been widely used. In the gradual replacement of grass pushing machine technology, the grass pushing technology has been mature, and how to improve the use experience of user becomes the thing that must be considered in the replacement process of grass pushing machine.

[0003] But the existing grass pushing machine, control function is mostly integrated in control panel, this also leads to the function of control panel is miscellaneous, easy to confuse.

[0004] Therefore, it is necessary to improve the existing grass pushing machine to solve the above problems. INNOVATION CONTENT

[0005] The utility model discloses a grass pushing machine, which can not only solve the problem of redundant and complex functions of the control panel, but also simplify the operation process and improve the user experience of the operator.

[0006] To achieve the above object, the utility model provides a grass pushing machine, including machine body, cutting assembly and walking assembly located below the machine body and handle assembly extending from the rear direction of the machine body, the handle assembly includes:

[0007] Push rod, two are equipped with and are connected with the machine body, and

[0008] Grip, two are equipped with and are located at the end of corresponding push rod respectively and are oppositely arranged.

[0009] Wherein, each grip includes oppositely arranged first switch and second switch, first trigger element and second trigger element, the first switch can be operated and be triggered by the first trigger element, the second switch can be operated and be triggered by the second trigger element, and the first switch on two grips is parallelly connected.

[0010] As a further improvement of the utility model, the grip includes a base connected to the push rod and a gripping portion extending outward from the base, and the axis of the extension direction of the base is the same as the longitudinal axis of the push rod.

[0011] As a further improvement of the utility model, the first switch is accommodated in the gripping portion, the first trigger element includes a trigger portion accommodated in the gripping portion and a pressing portion extending out of the gripping portion, and when the pressing portion is pressed, the trigger portion triggers the first switch.

[0012] As a further improvement of the utility model, the first trigger element and the second trigger element are respectively located on the upper and lower sides of the holding part in the extension direction of the push rod.

[0013] As a further improvement of the utility model, the holding part is further provided with a toggle switch in transmission connection with the second trigger element, and the toggle switch is located between the first trigger element and the second trigger element in the extension direction of the push rod and can rotate relative to the holding part.

[0014] As a further improvement of the utility model, the holding part is further provided with a response element connected with the toggle switch, the response element is provided with a driven part arranged in dislocation with the toggle switch, and the second trigger element comprises a trigger part accommodated in the holding part and arranged corresponding to the driven part; when the toggle switch is rotated to drive the driven part to rotate, the driven part can abut against the trigger part and push the trigger part to move.

[0015] As a further improvement of the utility model, one side of the trigger part facing the response element is provided with an abutment wall, and the top end of the abutment wall is provided with a positioning groove; after the driven part is rotated to abut against the abutment wall and push the trigger part to displace, the driven part is clamped into the positioning groove.

[0016] As a further improvement of the utility model, horizontal connecting rods are horizontally connected between the two push rods, and the inclination angle of the holding part relative to the horizontal connecting rod is 0-360°.

[0017] As a further improvement of the utility model, in the extension direction of the push rod, the holding part of each handle extends towards the direction of the other handle, so that the holding parts of the two handles are located between the two push rods on the horizontal plane and are symmetrical to each other.

[0018] As a further improvement of the utility model, the grass pushing machine further comprises a control panel, the control panel is assembled between the two push rods and close to the handle; and the control panel is used for controlling the start and stop of the grass pushing machine, the self-propelling and steering of the walking assembly, and the start and stop and rotating speed of the cutting assembly.

[0019] The grass pushing machine integrates the first trigger element and the second trigger element on the handle, and the two first switches are connected in parallel with each other, so that the function redundancy and complexity of the control panel are avoided, the operation steps are simplified, and the use experience of the operator is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of the grass pushing machine according to the preferred embodiment of the utility model.

[0021] Figure 2 is Figure 1 is a partial enlarged view of the dashed circle a.

[0022] Figure 3 is Figure 2 is a structural diagram of the handle and the crossbar.

[0023] Figure 4 is consistent with Figure 2 is a structural block diagram of the handle and the controller.

[0024] Figure 5 is Figure 2 is a structural diagram of the control panel.

[0025] Figure 6 is Figure 2 is a diagram of three gears of the second trigger element.

[0026] Figure 7 is Figure 2 is an internal structural diagram of the handle.

[0027] Figure 8 is Figure 7 is a partial enlarged view of the dashed circle.

[0028] Figure 9 is Figure 1 is a structural diagram of the lawn mower shown in Figure 1, with the hidden parts of the body, the walking assembly and the handle assembly removed.

[0029] Figure 10 is Figure 9 is an exploded view of the locking device.

[0030] Figure 11 is Figure 10 is a structural diagram of the upper shell.

[0031] Figure 12 is Figure 10 is a structural diagram of the lower shell.

[0032] Figure 13 is Figure 1 is a structural diagram of the lawn mower shown in Figure 1, with some parts removed.

[0033] Figure 14 is Figure 13 is an enlarged view of the dashed circle e, i.e. a partial diagram of the locking device in the first state.

[0034] Figure 15 is Figure 14 is a partial diagram of the locking device in the second state.

[0035] Figure 16 is Figure 13Partial enlarged view of the dotted circle c.

[0036] Figure 17 is Figure 13 Partial schematic view of the parking handle in another position.

[0037] Figure 18 is Figure 13 Partial enlarged view of the dotted circle d.

[0038] Figure 19 is Figure 1 Structural schematic view of the grass mower from another angle.

[0039] Figure 20 is Figure 9 Enlarged view of the dotted circle.

[0040] Figure 21 is Figure 1 Enlarged view of the dotted circle b.

[0041] Figure 22 Flow chart of the control method of the grass mower.

[0042] Figure 23 is in accordance with Figure 22 Structural block diagram of the control panel and the controller shown in the flow chart. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be described in detail below in combination with the drawings and specific embodiments.

[0044] Please refer to Figure 1 The utility model discloses a kind of grass mowers 100, the grass mowers 100 include machine body 1, walking assembly 2 being equipped in the lower portion of the machine body 1, cutting assembly 3 and handle assembly 4 located rear of the machine body 1 and extend obliquely upwards. The handle assembly 4 includes push rod 41 connected with the machine body 1, and knob 42 is arranged at the end of the push rod 41, the top of the push rod 41, the position where knob 42 is connected is equipped with control panel 5, the knob 42 is held for operator to control the grass mowers 100, the control panel 5 is used to control the start-stop of the grass mowers 100, self-propelled and steering of the walking assembly 2 and the start-stop and rotating speed of the cutting assembly 3 etc.

[0045] Specifically, the push rod 41 is provided with two, the control panel 5 is connected between two push rod 41, the knob 42 is also provided with two and respectively from corresponding push rod 41 extend obliquely upwards.

[0046] Please combine Figure 2As shown, in the embodiment, the two handles 42 are both provided in the shape of a horn and symmetrical to each other. Each handle 42 comprises a base portion 421 fixedly connected with the push rod 41 and a holding portion 422 extending outwardly from the base portion 421, the extending direction of the base portion 421 is the same as the longitudinal axis of the push rod 41, and in the extending direction of the push rod 41, the holding portion 422 of each handle 42 extends towards the other handle 42, so that the holding portions 422 of the two handles 42 are both located between the two push rods 41 in the horizontal plane.

[0047] Please refer to Figure 3 As shown, a horizontal bar 411 is horizontally connected between the two push rods 41, and the inclination angle a of the holding portion 422 with respect to the horizontal bar 411 is 60°. Of course, in other embodiments, the inclination angle of the holding portion 422 is not limited and can be adjusted between 0-360° according to actual needs, and the two handles 42 are not necessarily provided in the shape of a horn, which is not limited.

[0048] The handle 42 is provided with a first trigger element 423 on the side facing the operator, i.e. the direction away from the control panel 5, and a second trigger element 424 on the side opposite to the first trigger element 423, the first trigger element 423 and the second trigger element 424 are both integrated on the holding portion 422 and arranged on the upper and lower sides of the holding portion 422, so as to facilitate the use of the operator.

[0049] Please refer to Figure 4 As shown, specifically, the first trigger element 423 comprises a trigger portion 4232 accommodated in the holding portion 422 and a pressing portion 4231 extending out of the holding portion 422, when the operator presses the pressing portion 4231, the trigger portion 4232 triggers a first switch 4230 in the holding portion 422, so that the first switch 4230 sends out a first starting signal. The first switch 4230 can be a sensor or a micro switch, which is not limited.

[0050] In the embodiment, the first switches 4230 of the two handles 42 are connected in parallel with each other, therefore, triggering of any one of the first switches 4230 will send out the first starting signal. Such arrangement simplifies the operation steps and improves the user experience of the operator.

[0051] Please refer to Figure 5As shown, the control panel 5 is provided with a third trigger element 51 and a fourth trigger element 52, both of which are designed in a pressing manner, in use, first press the third trigger element 51 to power on the grass mower 100 and activate the display screen 53, then press the pressing part 4231 of one of the first trigger elements 423 to make the first switch 4230 send a first start signal, at this time, the grass mower 100 is in a standby state. Then, if you want to start the grass mower 100 to enter the mowing mode, press the fourth trigger element 52 to make the fourth trigger element 52 send a second start signal, at this time, the cutting assembly 3 formally starts to run.

[0052] Preferably, the control panel 5 is also provided with a fifth trigger element 54, which can adjust the rotating speed of the cutting assembly 3, so that the cutting assembly 3 can work at different rotating speeds. Of course, the control panel 5 can integrate multiple functions, which can be adjusted according to actual conditions, which is not limited here.

[0053] In this embodiment, because the first trigger element 423 is integrated on the holding part 422, when the operator holds the holding part 422, the first trigger element 423 can be naturally touched at the same time, and the first trigger element 423 is kept in an activated state at all times. Therefore, the grass mower 100 of the utility model is set to: press the fourth trigger element 52 while keeping at least one first trigger element 423 in an activated state, and the grass mower 100 will start the mowing mode, and when both first trigger elements 423 are in an inactivated state (i.e. the operator's hands are away from the holding part 422), the grass mower 100 is powered off and stops running, avoiding accidents.

[0054] The grass mower 100 has a self-propelled mode, when the grass mower 100 is in a standby state, the self-propelled mode of the grass mower 100 can be activated by pressing the second trigger element 424, without the need for manual pushing, improving the practicability.

[0055] Specifically, the walking assembly 2 includes walking wheels arranged on opposite sides of the machine body, in the advancing direction of the grass mower 100, the walking wheels include first walking wheels 21 and second walking wheels 22 arranged front and rear, 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 with the machine body 1, and 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 with 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. In order to facilitate description, the advancing direction of the grass mower 100 is defined as the front-rear direction, and the width direction of the grass mower 100 is defined as the left-right direction, and the front-rear direction is perpendicular to the left-right direction.

[0056] In the embodiment, the first walking wheels 21 are universal wheels, which can be turned to any direction as needed to adapt to different environments. The second walking wheels 22 are controlled by the second trigger elements 424 to realize the self-walking mode of the grass mower 100.

[0057] Please refer to Figure 6 The second trigger elements 424 are triggers and include multiple gears, such as a first gear 4241, a second gear 4242 and a third gear 4243, to control different rotating speeds of the corresponding second walking wheels 22. The two second trigger elements 424 are independent of each other to control the corresponding second walking wheels 22 on the same or different rotating speeds. Under the first gear 4241, the second walking wheels 22 rotate at a constant speed. Under the second gear 4242, the second walking wheels 22 stop rotating. Under the third gear 4243, the second walking wheels 22 rotate at a constant speed in the opposite direction. Of course, in other embodiments, not limited to only three gears, other gears can be added on the basis of keeping the three gears according to actual conditions, which is not limited.

[0058] Preferably, the second trigger elements 424 are connected with the second switches 4240 in the holding portions 422. When the second trigger elements 424 are activated, the second switches 4240 are triggered by the second trigger elements 424 to control the rotating speeds of the second walking wheels 22. Optionally, the second switches 4240 are potentiometers, pressure switches, Hall sensors or gratings, etc.

[0059] When at least one of the two first trigger elements 423 is in the activated state, the two second trigger elements 424 are pulled at the same time to switch from the first gear 4241 to the third gear 4243 within a predetermined time to activate the second switch 4240 to send a self-walking start signal. At this time, the two second trigger elements 424 are released at the same time to return from the third gear 4243 to the first gear 4241, and the self-walking mode is started. At this time, a round of start program is completed. Thereafter, the user only needs to hold one or two holding portions 422 to ensure that the first trigger elements 423 remain in the activated state, so that the grass mower 100 is in the running and self-walking modes. Preferably, the predetermined time is 1 second.

[0060] The grass mower 100 also has a steering control function. The two second walking wheels 22 are each equipped with a hub motor, which can be controlled by the second switch 4240 to drive the second walking wheels 22 to rotate.

[0061] Preferably, the second switch 4240 can control the rotating speed of the hub motor, so that the hub motor has a constant-speed forward rotation state, a constant-speed reverse rotation state and a stop rotation state. In turn, the walking wheel also has a constant-speed forward rotation state, a constant-speed reverse rotation state and a stop rotation state.

[0062] When one of the hub motors is in a constant-speed forward rotation state and the other hub motor is in a reverse rotation or stop rotation state, the grass mover rotates towards the hub motor in the reverse rotation or stop rotation state.

[0063] When one of the hub motors is in a constant-speed reverse rotation state and the other hub motor is in a stop rotation state, the grass mover rotates away from the hub motor in the stop rotation state.

[0064] When both of the hub motors are in a constant-speed reverse rotation state, the grass mover 100 as a whole retreats at a constant speed.

[0065] In other words, when the grass mover 100 is in the self-propelled mode, pulling one of the second trigger elements 424 to the second gear position 4242 stops the corresponding second walking wheel 22 from rotating, and the grass mover 100 turns towards the second walking wheel 22 that stops rotating. At this time, if the second trigger element 424 is continuously pulled to the third gear position 4243, the corresponding second walking wheel 22 reverses at a constant speed, and the grass mover 100 can turn more quickly towards the second walking wheel 22 that reverses at a constant speed. Similarly, when it is necessary to turn in the other direction, the other second trigger element 424 can be pulled to control the corresponding second walking wheel 22 to stop rotating or reverse at a constant speed. This is due to the relative independence of the two second trigger elements 424.

[0066] When both of the second trigger elements 424 are pulled to the third gear position 4243 at the same time, the grass mover 100 as a whole retreats at a constant speed. When both of the first trigger elements 423 are in an inactive state, the self-propelled mode is terminated. If the self-propelled mode needs to be started again thereafter, a new round of starting procedure still needs to be performed, in order to maximize the avoidance of accidental touch.

[0067] That is, the turning of the grass mover 100 is realized by using the speed difference between the two second walking wheels 22. When there is a difference between the speed vector of one of the second walking wheels 22 and the speed vector of the other second walking wheel 22, the grass mover 100 turns towards the second walking wheel 22 with the smaller speed vector, and zero turning can be realized. Of course, the different rotating speeds of the two second walking wheels 22 can also be regarded as the different rotating speeds of the two hub motors.

[0068] Please refer to Figure 7 and Figure 8As shown, the holding part 422 of the handle 42 is further provided with a toggle switch 425, the toggle switch 425 is in transmission connection with the second trigger element 424, and the toggle switch 425 can rotate relative to the holding part 422. In the extension direction of the push rod 41, the toggle switch 425 is located between the first trigger element 423 and the second trigger element 424, when the toggle switch 425 is rotated by toggling, the second trigger element 424 is driven to switch gears.

[0069] Specifically, the holding part 422 is provided with a response piece 426 connected with the toggle switch 425, and the response piece 426 is provided with a driven part 4261 arranged in a staggered manner with the toggle switch 425. The second trigger element 424 includes a trigger part 4244 accommodated in the holding part 422 and arranged corresponding to the driven part 4261, when the driven part 4261 is rotated by rotating the toggle switch 425, the driven part 4261 can abut against and push the trigger part 4244 to displace, thereby realizing gear shifting of the second trigger element 424. The trigger part 4244 is used to trigger the second switch 4240 to adjust the gear of the lawn mower 100.

[0070] In the embodiment, the trigger part 4244 is arranged adjacent to the response piece 426, and one side of the trigger part 4244 facing the response piece 426 is provided with an abutting wall 42440. The abutting wall 42440 is configured to abut against the driven part 4261 during rotation of the driven part 4261, and the driven part 4261 can push the abutting wall 42440 to displace.

[0071] When the second trigger element 424 is in the first gear position 4241, a gap is left between the driven part 4261 and the abutting wall 42440. At this time, the toggle switch 425 is rotated, so that the driven part 4261 is rotated towards the abutting wall 42440 to abut against the abutting wall 42440, and the abutting wall 42440 is pushed to move, and the second trigger element 424 moves from the first gear position 4241 to the second gear position 4242.

[0072] The top end of the abutting wall 42440 is further provided with a positioning groove 42441, when the driven part 4261 is rotated to disengage from the abutting wall 42440, the driven part 4261 is clamped in the positioning groove 42441. At this time, the toggle switch 425 cannot continue to rotate, and the second trigger element 424 is in the second gear position 4242.

[0073] That is, the toggle switch 425 is a switch for stopping the lawn mower 100 in the traveling state, which can provide the user with another way to stop the lawn mower 100 from traveling, instead of being limited to only the second trigger element 424.

[0074] The response member 426 is further provided with a reset device 4262. When the driven part 4261 is disengaged from the positioning groove 42441 and the second trigger element 424 is moved towards the third gear position 4243, the driven part 4261 is reset to have a gap with the abutting wall 42440, and at this time, the second trigger element 424 can be adjusted to the first gear position 4241, the second gear position 4242 or the third gear position 4243. Preferably, the reset device 4262 is a torsional spring.

[0075] Please refer to Figures 9 to 15 In the embodiment, the body 1 is movably connected with the first traveling wheel 21, so that the first traveling wheel 21 can rotate omnidirectionally relative to the body 1. An adapter 211 is arranged between the body 1 and the first traveling wheel 21. The adapter 211 includes a fixed part 2111 fixedly connected with the first traveling wheel 21 and a movable part 2112 movably connected with the body 1. The first traveling wheel 21 is movably connected with the body 1 through the adapter 211.

[0076] Preferably, the fixed part 2111 is provided with two and located at two sides of the first traveling wheel 21 respectively. The fixed part 2111 is fixedly connected with the rotation shaft of the first traveling wheel 21, so that the first traveling wheel 21 can drive the lawn mower 100 to travel without affecting the rotation of the first traveling wheel 21.

[0077] The body 1 is provided with a through hole (not shown) corresponding to the position of the movable part 2112. The through hole is for the bearing 111 to pass through, so as to movably connect the first traveling wheel 21 with the 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 of the body 1, so as to be passed through by the bearing 111. One end of the bearing 111 is fixedly connected with the movable part 2112 after passing through the through hole 2110. In this way, the first traveling wheel 21 can realize the steering relative to the lawn mower 100 through the adapter 211 and the bearing 111, so as to drive the whole lawn mower 100 to steer.

[0078] 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, each first walking wheel 21 is provided with the locking device 12.

[0079] 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.

[0080] 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.

[0081] Specifically, 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.

[0082] 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.

[0083] Preferably, the locking device 12 further comprises a first elastic member 125 inside the first hole 113, the first elastic member 125 being sleeved outside the pin shaft 123, the pin shaft 123 being provided with a supporting table 1231 on one side thereof facing the second hole 2113, one end of the first elastic member 125 abutting against the inner wall surface of the first hole 113 on the side thereof facing away from the lower shell 122, and the other end abutting against the supporting table 1231. That is, the first 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.

[0084] Preferably, as shown in Figure 14 when the locking device 12 is in the first state, the first elastic member 125 is compressed, and the pin shaft 123 is separated from the second hole 2113; as shown in Figure 15 when the locking device 12 is in the second state, the first elastic member 125 is elastically reset so that the pin shaft 123 is 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.

[0085] The lower shell 122 is provided with two first protruding portions 1221 on the side thereof facing the upper shell 121, and a first recessed portion 1222 connecting the two first protruding portions 1221, the first recessed portion 1222 also being provided with two first recessed portions 1222.

[0086] The upper shell 121 is correspondingly provided with a second protruding portion 1211 and a second recessed portion 1212, the first protruding portion 1221 and the second recessed portion 1212 being matched with each other, and the first recessed portion 1222 and the second protruding portion 1211 being matched with each other, so that the upper shell 121 and the lower shell 122 can be assembled to form a complete shell.

[0087] 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 recessed part 1222 and the second recessed part 1212, and the first elastic member 125 is in the compressed state. When the second protruding part 1211 abuts against the first recessed 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 first elastic member 125 returns to the released state, and the pin shaft 123 is clamped into the second hole 2113. That is, by adjusting the positions of 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 located outside the second hole 2113, thereby adjusting the advancing state of the first walking wheel 21.

[0088] Preferably, the lower surface of the second protruding part 1211 is provided with a third recessed 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.

[0089] The top of the upper shell 121 is further provided with a screwing part 124 for screwing, and 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 driven to rotate synchronously, thereby switching the locking device 12 between the first state and the second state.

[0090] Please refer to Figure 13 , Figures 16 to 18 It is shown that the grass mower 100 is also provided with a parking assembly 6, which is used for locking the grass mower 100 in the unstarted state (i.e. the stopped state / standing state) to avoid the movement of the grass mower 100 due to external force, especially when the grass mower 100 is not in the horizontal plane, the sliding of the grass mower 100 due to its own gravity can be avoided.

[0091] The parking assembly 6 comprises a driving module 61, a parking module 62 and a cable 63 connecting the driving module 61 and the parking module 62. One end of the cable 63 is fixedly connected to the inside of the driving module 61, and the other end is fixedly connected with the parking module 62. The driving module 61 is electrically connected with the parking module 62 through the cable 63.

[0092] The parking module 62 is configured to limit the rotation of the second walking wheel 22. In use, the driving module 61 is activated to gradually tighten the cable 63 and drive the parking module 62 to operate, thereby avoiding the rotation of the second walking wheel 22.

[0093] In the embodiment, the control panel 5 is fixed on the push rod 41 by bolts, and the driving module 61 is located outside the push rod 41, and the bolts pass through the driving module 61 and the control panel 5 to fix the driving module 61 and the control panel 5 on the push rod 41.

[0094] Specifically, the driving module 61 includes a parking handle 611 and a base plate 612, and the bolts pass through the base plate 612 to fix the base plate 612 and the control panel 5 on the push rod 41.

[0095] The parking handle 611 is movably connected with the base plate 612 and can rotate relative to the base plate 612. The driving module 61 further includes a driven part 613 connected with the parking handle 611 and movable relative to the parking handle 611, and the projection of the driven part 613 is entirely covered by the base plate 612. In this way, the driven part 613 can be hidden by a cover, so that the whole is more beautiful.

[0096] Preferably, the driven part 613 can rotate synchronously with the rotation of the parking handle 611, or rotate relative to the parking handle 611 under the relative action of the cable 63.

[0097] The base plate 612 is provided with a first limiting part 6121 and a second limiting part 6122, and the first limiting part 6121 and the second limiting part 6122 are arranged on the rotation path of the parking handle 611 and can abut against the parking handle 611 to limit the rotation angle of the parking handle 611.

[0098] Preferably, the first limiting part 6121 and the second limiting part 6122 are arranged on both sides of the rotation shaft of the parking handle 611 to limit the rotation range of the parking handle 611.

[0099] In the embodiment, the first limiting part 6121 and the second limiting part 6122 are arranged perpendicularly to the base plate 612, and the extension surfaces of the first limiting part 6121 and the second limiting part 6122 are perpendicular to each other to limit the parking handle 611 in different positions and different directions.

[0100] Preferably, the follower 613 is arranged between the first and second limiting portions 6121, 6122, and the vertical distance from the follower 613 to the base plate 612 is greater than the extension length of the first and second limiting portions 6121, 6122, so that the follower 613 is not limited by the first and second limiting portions 6121, 6122 during rotation. One end of the cable 63 is fixed to the follower 613, so as to avoid being entangled by the first and second limiting portions 6121, 6122 during rotation of the follower 613.

[0101] The follower 613 is displaced along with rotation of the parking handle 611, thereby pulling the cable 63 and driving the parking module 62.

[0102] The parking module 62 is arranged close to the second travel wheel 22, and includes a second elastic member 621 and a parking member 622. One end of the cable 63 is connected to the follower 613, and the other end of the cable 63 is fixedly connected to the parking member 622 after passing through the second elastic member 621, so as to drive the parking member 622 to abut against the second travel wheel 22 when the driving module 61 is activated, thereby avoiding rotation of the second travel wheel 22, and the second elastic member 621 is compressed at this time. Preferably, the cable 63 is arranged inside the push rod 41, so as to avoid affecting the overall appearance of the lawn mower 100.

[0103] In this embodiment, two parking modules 62 are arranged close to two second travel wheels 22, respectively, and two cables 63 are integrated on one parking handle 611, and the two cables 63 are connected to the two parking modules 62, respectively, so as to synchronously control the two second travel wheels 22 of the lawn mower 100, thereby avoiding rotation of the second travel wheels 22. Of course, in other embodiments, two parking handles 611 or one parking module 62 can be arranged, as long as rotation of the second travel wheels 22 on both sides can be prevented, and no limitation is made in this regard.

[0104] Preferably, the follower 613 can rotate relative to the parking handle 611, and when the rotation center 6110 of the parking handle 611 is located on the longitudinal axis (i.e., the axis of the extension direction) of the follower 613, the longitudinal axis of the cable 63, the follower 613, and the rotation center 6110 of the parking handle 611 are located on the same straight line, and at this time, the second elastic member 621 is in the maximum compression amount, and the force required for pulling the parking handle 611 is the maximum.

[0105] That is, the force of pulling the parking handle 611 is first increased and then decreased, and the demarcation point is when the rotation center 6110 of the parking handle 611 is located on the longitudinal axis of the driven member 613, which is located between the first limiting portion 6121 and the second limiting portion 6122.

[0106] Please refer to Figure 13 , Figures 19 to 21 It is shown that the grass pushing machine 100 is also provided with height adjusting assemblies 7, which are used to adjust the height of the machine body 1 relative to the ground. In the embodiment, the height adjusting assemblies 7 are arranged on both sides of the machine body 1.

[0107] In the embodiment, the machine body 1 comprises a machine body 10 and a front wheel frame 11 movably connected with the machine body 10, and the front wheel frame 11 at least partially shields the first walking wheel 21 and is movably connected with the first walking wheel 21. Preferably, the front wheel frame 11 is also provided with two, and is movably connected with the corresponding first walking wheel 21.

[0108] Preferably, the machine body 10 is also provided with a receiving cavity 104 opened towards the ground, and the cutting assembly 3 is received in the receiving cavity 104. That is, the cutting assembly 3 is located below the machine body 10.

[0109] In the embodiment, the height adjusting assemblies 7 are used to adjust the height of the cutting assembly 3 relative to the ground to meet the height required by the user for cutting. In other words, when the height of the machine body 10 relative to the ground is adjusted, the height of the cutting assembly 3 relative to the ground is also adjusted, and at this time the height of the front wheel frame 11 does not change.

[0110] The height adjusting assemblies 7 are provided with two and are connected through a connecting rod 701, and the two height adjusting assemblies 7 and the connecting rod 701 remain relatively stationary. That is, when one height adjusting assembly 7 moves, the other height adjusting assembly 7 will move synchronously under the driving of the connecting rod 701.

[0111] Specifically, the height adjusting assembly 7 comprises a height adjusting operating frame 71, a height adjusting support 72, and a height adjusting connecting rod 73 connecting the height adjusting operating frame 71 and the height adjusting support 72, and the height adjusting support 72 connects the machine body 10 and the front wheel frame 11.

[0112] The height adjusting operation frame 71 is arranged between the second walking wheel 22 and the machine body 10, and is provided with a pair of height adjusting operation frames 71 arranged on the left and right sides of the machine body 10 respectively, and the two height adjusting operation frames 71 are connected by a connecting rod 701. The second walking wheel 22 is pivotally connected with the corresponding height adjusting operation frame 71, and the height adjusting operation frame 71 is connected with the machine body 10 through a connecting shaft 711, so that when the height adjusting operation frame 71 on one side rotates, the height adjusting operation frame 71 on the other side can be driven to rotate synchronously through the connecting rod 701, and then the machine body 10 is lifted or lowered relative to the ground.

[0113] In the embodiment, the connecting rod 701 is not arranged between the two first walking wheels 21, because the two first walking wheels 21 are universal wheels and are independent of each other. In this way, the steering angle can be adjusted arbitrarily. Of course, in other embodiments, the connecting rod 701 can also be arranged between the two first walking wheels 21, and this is not limited.

[0114] The axis of the height adjusting operation frame 71 is independently arranged with the connecting shaft 711 and the connecting rod 701, so that when the height adjusting operation frame 71 rotates around the axis, the connecting rod 701 and the connecting shaft 711 can be driven to rotate, and then the height adjusting operation frame 71 on the other side rotates synchronously and the machine body 10 is displaced.

[0115] That is, when the height adjusting operation frame 71 is rotated, the side of the machine body 10 connected with the height adjusting operation frame 71 will be lifted or lowered, so as to adjust the height of the machine body 10 from the ground. Preferably, the axis of the height adjusting operation frame 71 is the position pivotally connected with the second walking wheel 22.

[0116] The height adjusting operation frame 71 is also provided with an operation handle 712, which extends upward from the height adjusting operation frame 71 in a direction perpendicular to the ground. Preferably, the operation handle 712 extends towards the operator, so that the design is more convenient to use.

[0117] The height adjusting support 72 is arranged close to the first walking wheel 21 and connected with the machine body 10. The height adjusting support 72 is arranged between the first walking wheel 21 and the machine body 10, and is also provided with two height adjusting supports 72 arranged on the left and right sides of the machine body 10 respectively, and the two height adjusting supports 72 are connected with the corresponding height adjusting operation frames 71 through the corresponding height adjusting connecting rods 73.

[0118] Preferably, the height adjustment connecting rod 73 can be displaced along the advancing direction of the grass mowing machine 100 under the rotation of the height adjustment operating frame 71. Thus, when the height adjustment operating frame 71 rotates, the corresponding height adjustment support 72 can be rotated by the height adjustment connecting rod 73, so as to move together with the machine body 10 relative to the front wheel frame 11, thereby adjusting the height of the machine body 10 relative to the ground. In this way, the requirements of different scenes can be met.

[0119] In the embodiment, the machine body 10 is provided with a fixed frame 102 fixedly connected with the height adjustment support 72. The height adjustment support 72 is substantially triangular and connected with the height adjustment connecting rod 73 and the front wheel frame 11 respectively. Thus, when the height adjustment operating frame 71 drives the height adjustment connecting rod 73 to move, the height adjustment support 72 can be rotated relative to the front wheel frame 11.

[0120] The height adjustment support 72 is defined with a first positioning point 721 connected with the fixed frame 102, a second positioning point 722 connected with the height adjustment connecting rod 73, and a third positioning point 723 connected with the front wheel frame 11. During the movement of the height adjustment operating frame 71 driving the height adjustment connecting rod 73, the first positioning point 721 and the second positioning point 722 are displaced relative to the third positioning point 723. In other words, the third positioning point 723 serves as the fulcrum of the rotation of the height adjustment support 72, so the position of the third positioning point 723 remains unchanged, and the heights of the first positioning point 721 and the second positioning point 722 are raised or lowered with the driving of the height adjustment connecting rod 73.

[0121] The fixed frame 102 and the front wheel frame 11 are connected with a support frame 103. The extension direction of the support frame 103 is parallel to the line connecting the first positioning point 721 and the third positioning point 723, so as to support the fixed frame 102 and the height adjustment support 72 and maintain the overall balance between the fixed frame 102 and the front wheel frame 11. In other words, the support frame 103, the front wheel frame 11 and the height adjustment support 72 form a balance frame similar to a parallelogram, so as to maintain the balance between the machine body 10 and the front wheel frame 11 during the lifting or lowering process.

[0122] In the embodiment, the line connecting the first positioning point 721 and the second positioning point 722 has an included angle with the ground. The height of the machine body 10 from the ground is inversely proportional to the included angle.

[0123] Specifically, when the height adjustment handle 71 rotates clockwise, the connecting shaft 711 rotates towards the ground, the height of one side of the machine body 10 decreases, the height adjustment link 73 moves towards the front wheel frame 11 side, and pushes the height adjustment support 72 to rotate counterclockwise as a whole, at this time, the angle between the line connecting the first positioning point 721 and the second positioning point 722 and the ground gradually increases, and the height of the side of the machine body 10 close to the front wheel frame 11 also decreases to be flush with the other side, at this time, the height adjustment of the machine body 10 of the lawn mower 100 is completed to control the mowing height of the cutting assembly 3.

[0124] Similarly, when it is necessary to adjust the height of the machine body 10 from the ground, it is only necessary to rotate the height adjustment handle 71 counterclockwise, at this time, the connecting shaft 711 rotates away from the ground, the height of one side of the machine body 10 increases, the height adjustment link 73 pulls the height adjustment support 72 to rotate clockwise as a whole, at this time, the angle between the line connecting the first positioning point 721 and the second positioning point 722 and the ground gradually decreases, and the height of the side of the machine body 10 close to the front wheel frame 11 also increases to be flush with the other side, at this time, the height adjustment of the machine body 10 of the lawn mower 100 is completed to control the mowing height of the cutting assembly 3. Of course, in other embodiments, the relationship between the lifting and lowering of the machine body 10 and the clockwise or counterclockwise rotation of the height adjustment handle 71 is not limited, and it is only necessary to ensure that the rotation direction of the height adjustment handle 71 is opposite to the rotation direction of the height adjustment support 72.

[0125] The machine body 10 is provided with a plurality of through limiting holes 101 for inserting the plug pin 731, and the height adjustment link 73 is provided with a limiting groove 730 corresponding thereto. The plurality of limiting holes 101 are located on the movement path of the height adjustment link 73, and the limiting groove 730 can be aligned with the plurality of limiting holes 101 respectively with the movement of the height adjustment link 73, so as to fix the height adjustment link 73 after inserting the plug pin 731, so that the height adjustment link 73 cannot continue to move. In this way, the limiting of the machine body 10 of the lawn mower 100 after completing the height adjustment is realized. Of course, the number and form of the limiting holes 101 can be adjusted according to the actual situation, and this is not limited.

[0126] Please refer to Figure 4 , Figure 22 and Figure 23 , the utility model also provides a control method of the lawn mower 100, to control the start and stop, turning and the like of the lawn mower 100.

[0127] The grass mower 100 further comprises a power-on switch 511, a fourth switch 521, a fifth switch 541, and a controller 8 electrically connected to the first switch 4230, the second switch 4240, the power-on switch 511, the fourth switch 521, and the fifth switch 541, and receiving signals sent by the first switch 4230, the second switch 4240, the power-on switch 511, the fourth switch 521, and the fifth switch 541 to control the grass mower 100.

[0128] In the embodiment, the power-on switch 511, the fourth switch 521, and the fifth switch 541 are integrated on the control panel 5, and the third trigger element 51 is operable to trigger the power-on switch 511, the fourth trigger element 52 is operable to trigger the fourth switch 521, and the fifth trigger element 54 is operable to trigger the fifth switch 541.

[0129] The controller 8 is configured to:

[0130] receive the start signal sent by the first switch 4230 and the power-on switch 511;

[0131] determine the time sequence of the start signal sent by the first switch 4230 and the start signal sent by the power-on switch 511,

[0132] when the start signal sent by the power-on switch 511 is earlier than the start signal sent by the first switch 4230, allow the grass mower 100 to enter the standby start state;

[0133] when the start signal sent by the power-on switch 511 is later than the start signal sent by the first switch 4230, prohibit the grass mower 100 from starting.

[0134] That is, the controller 8 receives the start signals sent by the power-on switch 511 and the first switch 4230 in sequence to control the grass mower 100 to enter the standby start state. The standby start state is between the idle state and the start state of the grass mower 100, and the operator can start the grass mower 100 based on the standby start state of the grass mower 100, which undoubtedly ensures the safety of the operator.

[0135] The controller 8 receives the start signal sent by the power-on switch 511 and receives the start signal sent by the first switch 4230 within a predetermined time to control the grass mower 100 to enter the standby start state. By presetting the time period, the grass mower 100 can still be started after a long interval due to accidental touch, further improving the practicality. Of course, the specific preset time can be adjusted according to the actual situation, and no limitation is made thereto.

[0136] When the mower 100 is in the standby state, the controller 8 receives the start signal sent by the second switch 4240, allowing the mower 100 to enter the self-propelled mode; the controller 8 receives the start signal sent by the fourth switch 521, controlling the start of the cutting assembly 3; the controller 8 receives the signal sent by the fifth switch 541, controlling the rotating speed of the cutting assembly 3. That is, the second switch 4240 is set to allow the mower 100 to enter the self-propelled mode, and the fourth switch 521 and the fifth switch 541 are set to control the cutting assembly 3. In other embodiments, other switches can be integrated to make the mower 100 compatible with more start functions in the standby mode.

[0137] The second switch 4240 can send multiple different gear signals, and the controller 8 receives the different gear signals to control the rotating speed of the walking assembly 2, that is, to control the rotating speed of the hub motor. The second switch 4240 is provided with two and is independent of each other to control two second walking wheels 22 respectively, and the controller 8 receives the different gear signals sent by the two second switches 4240 to control the rotating speed and steering of the walking assembly 2.

[0138] Specifically, when the speed vectors of the two hub motors are different, the mower 100 is steered towards the hub motor with the smaller speed vector. In this way, the steering of the mower 100 is realized.

[0139] The hub motor has a constant-speed forward rotation state, a constant-speed reverse rotation state, and a stop rotation state. When one of the hub motors is in the constant-speed forward rotation state and the other hub motor is in the reverse rotation or stop rotation state, the mower 100 rotates towards the hub motor in the reverse rotation or stop rotation state.

[0140] When one of the hub motors is in the constant-speed reverse rotation state and the other hub motor is in the stop rotation state, the mower rotates away from the hub motor in the stop rotation state.

[0141] When both hub motors are in the constant-speed reverse rotation state, the mower retreats as a whole.

[0142] That is, through the two second switches 4240 independently set, the second switch 4240 can control the walking of the mower 100 while considering the steering, which is not only simple to operate but also more convenient.

[0143] In this embodiment, the controller 8 is also set to control the mower 100 to be powered off and stopped when both first switches 4230 are in the untriggered state. In this way, the safety of use is further ensured.

[0144] In summary, the lawn mower 100 of the present invention integrates the first trigger element 423 and the second trigger element 424 on the handle 42, and connects the two first switches 4230 in parallel with each other, which avoids the redundant and complicated functions on the control panel 5 while simplifying the operating steps and improving the operator's experience.

[0145] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention 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 invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A lawn mower comprising a body, a cutting assembly and a travel assembly located below the body, and a handle assembly extending obliquely upward from a rear of the body, characterized in that, The handle assembly comprises: two push rods connected to the machine body; and two grips respectively located at the ends of the corresponding push rods and arranged oppositely; wherein each of the grips comprises a first switch and a second switch arranged oppositely, a first trigger element and a second trigger element, the first switch being operable to be triggered by the first trigger element, and the second switch being operable to be triggered by the second trigger element, the first switches of the two grips being connected in parallel to each other.

2. The lawn roller of claim 1, wherein The grip comprises a base connected to the push rod and a holding portion extending outwardly from the base, and the extending direction of the base has the same axis as the longitudinal axis of the push rod.

3. The lawn roller of claim 2, wherein, The first switch is accommodated in the holding portion, and the first trigger element comprises a trigger portion accommodated in the holding portion and a pressing portion extending out of the holding portion, when the pressing portion is pressed, the trigger portion triggers the first switch.

4. The lawn roller of claim 2, wherein, In the extending direction of the push rod, the first trigger element and the second trigger element are respectively located on the upper and lower sides of the holding portion.

5. The lawn roller of claim 4, wherein, The holding portion is further provided with a toggle switch in transmission connection with the second trigger element, in the extending direction of the push rod, the toggle switch is located between the first trigger element and the second trigger element and can rotate relative to the holding portion.

6. The lawn roller of claim 5, wherein, The holding portion is provided with a response element connected to the toggle switch, the response element is provided with a driven portion arranged oppositely to the toggle switch, and the second trigger element comprises a trigger portion accommodated in the holding portion and arranged correspondingly to the driven portion, when the toggle switch is rotated to rotate the driven portion, the driven portion can abut against the trigger portion and push the trigger portion to move.

7. The lawn roller of claim 6, wherein, The side of the trigger portion facing the response element is provided with an abutting wall, the top end of the abutting wall is provided with a positioning groove, and the driven portion is rotated to abut against the abutting wall and push the trigger portion to displace and then is clamped into the positioning groove.

8. The lawn roller of claim 2, wherein, A cross rod is horizontally connected between the two push rods, and the inclination angle of the holding portion relative to the cross rod is 0-360°.

9. The lawn roller of claim 2, wherein, In the extending direction of the push rod, the holding portion of each grip extends towards the direction of the other grip, so that the holding portions of the two grips are located between the two push rods and are symmetrical to each other in the horizontal plane.

10. The lawn roller of claim 1, wherein, The lawn mower further comprises a control panel, the control panel is assembled between the two push rods and is close to the grips, and the control panel is used to control the start and stop of the lawn mower, the self-propelling and steering of the walking assembly, and the start and stop and rotating speed of the cutting assembly.

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