Push mower and control method thereof

Abstract

The invention provides a grass pushing machine and a control method thereof. The grass pushing machine comprises a machine body, a cutting assembly, a first switch, a second switch and a controller. Wherein the cutting assembly is installed on the machine body and comprises a driving motor, and the controller is electrically connected to the first switch, the second switch and the driving motor, receives starting signals sent by the first switch and the second switch and controls the driving motor to be started; the controller is configured to receive starting signals sent by the first switch and the second switch; the time sequence of the starting signal sent by the first switch and the starting signal sent by the second switch is judged, and when the starting signal sent by the first switch is earlier than the starting signal sent by the second switch, the cutting assembly is allowed to be started; and when the starting signal sent by the first switch is later than the starting signal sent by the second switch, starting of the cutting assembly is forbidden. Compared with the prior art, the lawn mower has the advantages that the starting signals of the first switch and the second switch are sequentially received through the controller to start the lawn mower, and the situation that the lawn mower is accidentally started due to mistaken touch, and then the use safety and the use experience of a user are affected is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to a lawn mower and a control method thereof, and belongs to the technical field of garden tools. BACKGROUND

[0002] The lawn mower is a repair tool for gardens, lawns and other sites, 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. Simplifying the operation process of the user and reducing the floor area of the lawn mower are two aspects that need to be optimized.

[0003] On the one hand, the lawn mower is provided with a control switch at the handle, which is convenient for the user to notice, and also enables the user to stop the operation of the lawn mower at any time during the use of the lawn mower. On the other hand, the handle of the lawn mower is provided in a telescopic state, which can adjust the height of the lawn mower when used by different users, and can also reduce the overall volume of the lawn mower when stored.

[0004] However, when the operator stores the lawn mower, the lawn mower may be mistakenly started, which affects the operator.

[0005] Therefore, it is necessary to improve the lawn mower to solve the above problems. SUMMARY

[0006] The purpose of the present application is to provide a control method of a lawn mower, which can ensure the safe start of the lawn mower.

[0007] To achieve the above purpose, the present application provides a control method of a lawn mower, which comprises:

[0008] a machine body;

[0009] a cutting assembly mounted on the machine body and comprising a driving motor;

[0010] a first switch;

[0011] a second switch;

[0012] a controller electrically connected to the first switch, the second switch and the driving motor, receiving the start signals sent by the first switch and the second switch, and controlling the start of the driving motor;

[0013] The controller is configured to,

[0014] receive the start signals sent by the first switch and the second switch;

[0015] determine the time sequence of the start signals sent by the first switch and the second switch,

[0016] allowing the cutting assembly to start when the start signal from the first switch is earlier than the start signal from the second switch;

[0017] prohibiting the cutting assembly from starting when the start signal from the first switch is later than the start signal from the second switch.

[0018] As a further improvement of the present application, the controller receives the start signal from the first switch, receives the start signal from the second switch within a predetermined time, and controls the driving motor to start.

[0019] As a further improvement of the present application, the controller stops the driving motor from rotating after receiving a signal from the first switch or the second switch.

[0020] As a further improvement of the present application, the grass mover further comprises a third switch, and the controller controls the rotating speed of the driving motor according to a signal from the third switch.

[0021] The present application also aims to provide a grass mover that can ensure safe starting.

[0022] To achieve the above-mentioned purpose, the present application provides a grass mover comprising:

[0023] a body;

[0024] a first push rod connected to the body;

[0025] a handle operable to slide along the first push rod;

[0026] a cutting assembly mounted on the body, the cutting assembly comprising a driving motor;

[0027] a first switch;

[0028] a second switch;

[0029] a controller electrically connected to the first switch, the second switch, and the driving motor, the controller being configured to start the driving motor only when start signals from the first switch and the second switch are sequentially received;

[0030] a control panel located on the handle, the control panel comprising a first trigger element and a second trigger element, the first trigger element being operable to trigger the first switch, and the second trigger element being operable to trigger the second switch,

[0031] the handle having a first position and a second position, when the handle is in the first position, the second trigger element being operable to be activated and inactivated,

[0032] When the grip is in the second position, the second trigger element is activated.

[0033] As a further improvement of the present invention, a crossbar is provided between the first push rods, and when the grip is in the second position, the second triggering element is activated by the crossbar.

[0034] As a further improvement of the present invention, the grip includes a grip portion and a second push rod movably connected to the first push rod, and the movement trajectory of the second trigger element is located in the plane containing the second push rod and the crossbar.

[0035] As a further improvement of the present invention, the first push rod is hollow, and the second push rod is partially housed inside the first push rod and can slide relative to the first push rod.

[0036] As a further improvement of the present invention, the second push rod is provided with a positioning groove, and the first push rod is provided with a corresponding through positioning hole. The positioning groove and the positioning hole are aligned with each other so that the positioning element passes through the positioning hole and the positioning groove at the same time to fix the second push rod inside the first push rod.

[0037] As a further improvement of the invention, the control panel is at least partially located on or near the upper part of the grip.

[0038] The beneficial effects of this invention are as follows: The control method of the lawn mower of this invention connects the controller electrically to a first switch, a second switch, and a drive motor, so that the controller can receive start signals from the first switch and the second switch to control the start of the drive motor; in addition, the controller is configured to: receive start signals from the first switch and the second switch; determine the timing of the start signals from the first switch and the second switch; when the start signal from the first switch is earlier than the start signal from the second switch, the cutting component is allowed to start; when the start signal from the first switch is later than the start signal from the second switch, the cutting component is prohibited from starting, thus preventing the operator from accidentally starting the lawn mower when storing it, and ensuring the user's safety. Attached Figure Description

[0039] Figure 1 This is a flowchart of the control method for the grass pusher of the present invention.

[0040] Figure 2 It conforms to Figure 1 The flowchart shown is a structural block diagram of a grass pusher.

[0041] Figure 3 This is a structural schematic diagram of a grass pusher conforming to a preferred embodiment of the present invention.

[0042] Figure 4 yes Figure 3Another angle of the structure of the shown grass mower.

[0043] Figure 5 is Figure 3 An exploded view of the handle assembly.

[0044] Figure 6 is Figure 5 A partial enlarged view of the shown grass mower.

[0045] Figure 7 is Figure 5 An exploded view of the switch.

[0046] Figure 8 is Figure 3 An exploded view of the shown grass mower with a first push rod, a cross rod and part of the locking switch removed.

[0047] Figure 9 is Figure 8 A partial enlarged view of the shown grass mower.

[0048] Figure 10 is Figure 8 A partial enlarged view of the shown grass mower. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be described in detail below with reference to the drawings and specific embodiments.

[0050] Please refer to Figures 2 to 4 The present application discloses a grass mower 100, which comprises a body 1, a power assembly 2 fixed above the body 1, a cutting assembly 3 fixed at the bottom of the body 1, a handle assembly 4 extending obliquely from the back of the body 1, and a walking assembly 6 for supporting the grass mower 100 to move forward, wherein a control panel 5 is arranged on the handle assembly 4, and the power assembly 2 is configured to obtain the state of the control panel 5 so as to control the start and stop of the cutting assembly 3 under the control of the control panel 5.

[0051] Specifically, please refer to Figure 1 The power assembly 2 comprises a driving motor 21 and a controller 22, wherein the controller 22 is configured to control the start and stop of the driving motor 21, and thus control the start and stop of the cutting assembly 3. That is, the controller 22 can obtain the state of the control panel 5, and control the start and stop of the grass mower 100 according to the state of the control panel 5.

[0052] Of course, in the embodiment, the driving motor 21 is a part of the cutting assembly 3 for driving the cutting assembly 3 to operate. For the convenience of understanding, the driving motor 21 and the controller 22 are described generically in the description as a power assembly 2, which should not be mistaken as different structures of the same component, and in other embodiments, the position of the controller 22 is not limited as long as the same effect can be achieved.

[0053] The handle assembly 4 is telescopic and comprises a support part 41 connected to the machine body 1 and a grip 42 detachably connected to the support part 41, the control panel 5 is fixed on the grip 42 and comprises a first trigger element 51 and a second trigger element 52, the support part 41 comprises a first push rod 411 connected to the grip 42, the grip 42 is operable to slide along the first push rod 411, and the first push rod 411 is provided with two, a cross rod 412 is arranged between the two first push rods 411 to fix the first push rods 411. Preferably, the control panel 5 is at least partially located on or near the upper part of the grip 42, which is more convenient for the operator to use.

[0054] Specifically, the first push rod 411 is hollow, the grip 42 comprises a holding part 422 and a second push rod 421, the second push rod 421 is partially accommodated in the first push rod 411 and is slidable relative to the first push rod 411, so that the grip 42 has a first position (extended position) and a second position (retracted position).

[0055] Preferably, the first push rod 411 internally accommodates a cable connected to the control panel 5, and the control panel 5 transmits the start signal through the cable.

[0056] Please refer to Figure 5 The second push rod 421 is provided with a positioning groove 4210, and the first push rod 411 is provided with a through positioning hole 4110 corresponding to the positioning groove 4210, the positioning groove 4210 and the positioning hole 4110 are aligned with each other, so that the positioning member 7 passes through the positioning hole 4110 and the positioning groove 4210 at the same time to fix the second push rod 421 in the first push rod 411. The positioning groove 4210 is provided with a plurality of and is spaced from each other, so as to timely fix when the second push rod 421 slides relative to the first push rod 411 to the required position.

[0057] Please refer to Figure 6As shown, the control panel 5 includes a first trigger element 51, a second trigger element 52 and a third trigger element 53, and the control panel 5 is internally provided with a first switch 511, a second switch 512 and a third switch 513 corresponding to the first trigger element 51, the second trigger element 52 and the third trigger element 53, the first trigger element 51 is operable to trigger the first switch 511, the second trigger element 52 is operable to trigger the second switch 512, and the third trigger element 53 is operable to trigger the third switch 513, so as to power on the mower 100 through the first switch 511, control the start and stop of the mower 100 through the second switch 512, and control the rotating speed of the driving motor 21 through the signal emitted by the third switch 513.

[0058] Preferably, the first switch 511, the second switch 512 and the third switch 513 can be sensors or micro switches, and the power-on of the mower 100 and the start and stop of the cutting assembly 3 are controlled through Bluetooth. Of course, in other embodiments, this is not limited, as long as the same control effect can be achieved.

[0059] In this embodiment, the controller 22 is electrically or signal connected to the first switch 511, the second switch 512, the third switch 513 and the driving motor 21, and the controller 22 is arranged to start the driving motor 21 only when the first switch 511 and the second switch 512 receive the start signals in sequence, and then control the operation of the cutting assembly 3. That is, the first switch 511 emits a first start signal, the second switch 512 emits a second start signal, and the third switch 513 emits a third start signal, and the three start signals are different. By setting the controller 22, the mower 100 can only be started when the controller 22 receives the correct start signal in sequence, so as to avoid false touch.

[0060] In this embodiment, the first trigger element 51 and the third trigger element 53 are both press-type trigger elements and are located at the top of the control panel 5, so as to be more convenient for the operator to observe and use. On the contrary, based on the use frequency of different trigger elements, the third trigger element 53 is closer to the operator than the first trigger element 51, so as to be more convenient for the operator to use.

[0061] The second trigger element 52 is a trigger, which extends outwardly from the control panel 5 and is located in the plane between the handle 42 and the crossbar 412, and can move one end of the trigger towards or away from the holding portion 422. When the trigger is in a free state, one end of the trigger is away from the holding portion 422, and the second trigger element 52 cannot transmit an activation signal; when one end of the trigger is pressed close to the holding portion 422, the second trigger element 52 is triggered and triggers the second switch 512 to transmit an activation signal.

[0062] In the embodiment, when the handle 42 is in the first position, the second trigger element 52 is operable to be activated and inactivated, and when the handle 42 is in the second position, the second trigger element 52 is activated. That is, when the handle 42 is in the second position, one end of the second trigger element 52 is pressed close to the holding portion 422. Preferably, when the handle 42 is in the second position, the second trigger element 52 is activated by the crossbar 412.

[0063] Specifically, when the handle 42 is in the second position, the crossbar 412 abuts against the second trigger element 52 to push one end of the second trigger element 52 to move towards the holding portion 422 to activate the second trigger element 52.

[0064] The crossbar 412 is provided with an abutting portion 4121 corresponding to and abutting against the second trigger element 52, which is used to press the second trigger element 52 so that the second trigger element 52 is always in an activated state.

[0065] Please refer to Figures 8-10 In the embodiment, the abutting portion 4121 is provided with two abutting portions 4121 located on opposite sides of the crossbar 412, and a locking switch 8 is arranged between the two abutting portions 4121. The locking switch 8 comprises a folding portion 81 and a base body 82 rotationally connected with the crossbar 412. A through screw rod assembly 83 is accommodated in the support portion 41, and the base body 82 is fixedly connected with the screw rod assembly 83 and can rotate synchronously with the folding portion 81.

[0066] Preferably, the screw rod assembly 83 comprises a rod member 831 accommodated in the crossbar 412 and a rope 832 connected with the rod member 831 and penetrating into the first push rod 411. The rod member 831 rotates with the rotation of the locking switch 8, and the rope 832 can rise or fall with the rotation of the rod member 831.

[0067] Specifically, the cross rod 412 is provided with a through hole, and the base body 82 is provided with a fixing column 821 corresponding to the through hole, the fixing column 821 clamps and fixedly connects the lead screw assembly 83 after penetrating into the through hole, and when the folding handle part 81 is pulled, the base body 82 rotates around the cross rod 412 and drives the lead screw assembly 83 to rotate. Of course, in other embodiments, other connection modes can also be used, as long as the lead screw assembly 83 can rotate synchronously with the locking switch 8, and no limitation is made in this regard.

[0068] The grass pushing machine 100 further comprises a grass collecting box 9, and the machine body 1 comprises a connecting plate 11 connecting the cutting assembly 3 and the grass collecting box 9, and the end of the first push rod 411 is rotationally connected to the connecting plate 11 through a pin shaft 10.

[0069] In the embodiment, the connecting plate 11 is provided with a limiting groove 110 opposite to the first push rod 411, and the end of the rope 832 is provided with a limiting assembly 833, the limiting assembly 833 and the limiting groove 110 are matched with each other, so that the first push rod 411 is clamped with the connecting plate 11 and cannot rotate.

[0070] Preferably, the limiting assembly 833 comprises a limiting piece 8331 and an elastic piece 8332 sleeved outside the limiting piece 8331, when the folding handle part 81 is pulled, the base body 82 rotates around the cross rod 412 and drives the rod piece 831 to rotate, then drives the limiting piece 8331 to be separated from the clamping of the limiting groove 110, and makes the elastic piece 8332 deformed, at this time, the handle assembly 4 can be folded to be folded to further reduce the floor area of the grass pushing machine 100.

[0071] Of course, the pin shaft 10 is located on the travel path of the limiting piece 8331 and above the limiting piece 8331, when the folding handle part 81 is pulled to abut against the pin shaft 10, the folding handle part 81 is folded to the maximum, so as to limit the movement range of the limiting piece 8331, which is more beneficial to actual use.

[0072] The locking switch 8 is used for controlling the handle assembly 4 of the grass pushing machine 100 to rotate along the pin shaft 10, and the positioning piece 7 is used for controlling the handle assembly 4 to longitudinally stretch and contract along the first push rod 411 and the second push rod 421. That is to say, the locking switch 8 and the positioning piece 7 are both control elements for controlling the handle assembly 4, the positioning piece 7 is located at least partially on the upper part of the first push rod 411, and the locking switch 8 is located on the cross rod 412 and is also arranged close to the upper part of the first push rod 411, so as to be close to the operator for operation.

[0073] The direction of travel of the lawn mower 100 is defined as the horizontal plane. The blade tip of the cutting assembly 3 and the gripping position of the handle assembly 4 both have projection points on this horizontal plane. The distance between these two projection points is the operating distance. The operating distance is clearly defined in the usage standards for the lawn mower 100. According to these standards, the standard distance between the two projection points is defined as the safety distance. When the operating distance is less than the safety distance, the lawn mower 100 cannot operate.

[0074] When the handle 42 is in the first position, the operating distance is greater than the safety distance, and the lawn mower 100 can operate normally. When the handle 42 is in the second position, the operating distance is less than the safety distance, and the lawn mower 100 cannot operate. In other words, when the handle 42 is in the second position, according to usage regulations, the lawn mower 100 is prohibited from operating. Therefore, in this embodiment, by setting the abutment part 4121, when the handle 42 is in the second position, the second trigger element 52 is forcibly activated, preventing the controller 22 from controlling the start of the lawn mower 100 without prior activation of the first trigger element 51. Compared to the prior art that adds an additional safety switch, this undoubtedly saves on production costs.

[0075] In other words, when the grip 42 is in the first position, the handle assembly 4 is in the extended state, and both the first trigger element 51 and the second trigger element 52 can switch between the open and closed states; when the grip 42 is in the second position, the handle assembly 4 is in the retracted state, the first trigger element 51 can switch between the open and closed states, and the second trigger element 52 is always in the open state. Thus, the anti-accidental activation function of the lawn mower 100 is achieved.

[0076] Please combine Figure 1 As shown, the present invention also provides a control method for a grass pusher 100, by configuring the controller 22 to,

[0077] Receive the start signal from the first switch 511 and the second switch 512;

[0078] Determine the timing of the start signal issued by the first switch 511 and the start signal issued by the second switch 512.

[0079] When the start signal issued by the first switch 511 is earlier than the start signal issued by the second switch 512, the cutting assembly 3 is allowed to start.

[0080] When the start signal from the first switch 511 is later than the start signal from the second switch 512, the start of the cutting assembly 3 is prohibited.

[0081] In other words, the first trigger element 51 must be activated first, followed by the second trigger element 52, before the lawn mower 100 can be officially started. This ensures the safe operation of the lawn mower 100 while preventing accidental activation.

[0082] The controller 22 receives the start signal from the first switch 511 and the start signal from the second switch 512 within a predetermined time, controlling the drive motor 21 to start. By using a preset time period, accidental activation is avoided, allowing the lawnmower 100 to start even after a long interval, further improving practicality. Of course, the specific preset time can be adjusted according to actual conditions and is not limited thereto.

[0083] Upon receiving a closed signal from either the first switch 511 or the second switch 512, the controller 22 stops the drive motor 21 from rotating. In other words, the rotation of the drive motor 21 can be turned off by either switch, thereby shutting down the operation of the lawnmower 100.

[0084] In summary, the lawn mower 100 and its control method of the present invention electrically connect a controller 22 to a first switch 511, a second switch 512, and a drive motor 21. The controller 22 can receive start signals from the first switch 511 and the second switch 512 to control the drive motor 21 to start. Furthermore, the controller 22 is configured to: receive start signals from the first switch 511 and the second switch 512; determine the timing of the start signals from the first switch 511 and the second switch 512; allow the cutting assembly 3 to start when the start signal from the first switch 511 is earlier than the start signal from the second switch 512; and prohibit the cutting assembly 3 from starting when the start signal from the first switch 511 is later than the start signal from the second switch 512. This avoids accidental start-up of the lawn mower 100 by the operator when storing it, ensuring user safety.

[0085] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A control method for a lawn mower, the lawn mower comprising: Organism; A cutting assembly, mounted on the machine body, includes a drive motor; First switch; Second switch; The controller is electrically connected to the first switch, the second switch and the drive motor, receives the start signal from the first switch and the second switch, and controls the drive motor to start. Its features are, The controller is configured to, Receive the start signal from the first switch and the second switch; Determine the timing of the start signal from the first switch and the start signal from the second switch. The cutting assembly is allowed to start when the start signal from the first switch is earlier than the start signal from the second switch. When the start signal from the first switch is later than the start signal from the second switch, the cutting assembly is prevented from starting.

2. The control method according to claim 1, characterized in that, The controller receives a start signal from the first switch and a start signal from the second switch within a predetermined time, thereby controlling the drive motor to start.

3. The control method according to claim 1, characterized in that, The controller stops the drive motor from rotating after receiving a signal from either the first or second switch being closed.

4. The control method according to claim 1, characterized in that, The grass pusher also includes a third switch, and the controller controls the speed of the drive motor according to the signal emitted by the third switch.

5. A grass pusher, characterized in that, Include: Organism; A first push rod is connected to the machine body; A grip that is operable to slide along the first push rod; A cutting assembly, mounted on the machine body, includes a drive motor; First switch; Second switch; A controller, electrically connected to the first switch, the second switch, and the drive motor, is configured to start the drive motor only when it receives start signals from the first switch and the second switch in sequence. The control panel, located on the grip, includes a first trigger element and a second trigger element. The first trigger element is operable to trigger a first switch, and the second trigger element is operable to trigger a second switch. The grip has a first position and a second position. When the grip is in the first position, the second trigger element is operable to be activated or deactivated. When the grip is in the second position, the second trigger element is activated.

6. The grass pusher according to claim 5, characterized in that, A crossbar is provided between the first push rods, and when the grip is in the second position, the second trigger element is activated by the crossbar.

7. The grass pusher according to claim 6, characterized in that, The grip includes a grip portion and a second push rod movably connected to the first push rod, and the movement trajectory of the second trigger element is located in the plane containing the second push rod and the crossbar.

8. The grass pusher according to claim 7, characterized in that, The first push rod is hollow, and the second push rod is partially housed inside the first push rod and can slide relative to the first push rod.

9. The grass pusher according to claim 8, characterized in that, The second push rod is provided with a positioning groove, and the first push rod is provided with a corresponding through positioning hole. The positioning groove and the positioning hole are aligned with each other so that the positioning element can pass through the positioning hole and the positioning groove at the same time to fix the second push rod inside the first push rod.

10. The grass pusher according to claim 5, characterized in that, The control panel is located, at least partially, on or near the upper part of the grip.

Images