A mower start-stop control mechanism, control method and mower

Abstract

The application relates to a mower start-stop control mechanism, a control method and a mower. The mower comprises a casing, a rear cover and a grass frame arranged at one end of the casing. The rear cover is rotatably arranged on the casing. A locking mechanism is arranged between the casing and the rear cover and used for locking the rear cover. When the rear cover is in the locked state, the mower is in the stop state, and when the rear cover is in the unlocked state, the mower can be normally started. The mower is convenient for taking and placing the grass frame after mowing. The whole operation process does not need to frequently open the rear cover, the consumer experience is good, and the power-off device is arranged. When the rear cover is turned by a certain angle, the power is automatically cut off and fixed, and the use safety is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lawn mowers, in particular to a lawn mower start-stop control mechanism, a control method and a lawn mower. BACKGROUND

[0002] When using the lawn mower, when it is necessary to empty the grass, it is necessary to manually cut off the power supply and stop the machine, then open the rear cover to take down the grass frame, after emptying the grass, it is necessary to open the rear cover again to put the grass frame back, and then restart the power supply when mowing the lawn again. In the whole process of mowing the lawn, it is necessary to empty the grass several times, so the rear cover needs to be frequently opened and closed for taking and placing the grass frame, which is troublesome for the consumer and the use experience is not good. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a lawn mower start-stop control mechanism, which is convenient for taking and placing the grass frame after mowing the lawn and does not need to frequently open the rear cover.

[0004] In order to solve the above technical problems, the present application is realized by the following technical scheme:

[0005] A lawn mower start-stop control mechanism, comprising a machine shell, a rear cover and a grass frame arranged at one end of the machine shell, the rear cover is rotatably arranged on the machine shell, and a locking mechanism for locking the rear cover is further arranged between the machine shell and the rear cover, when the rear cover is in the locked state, the lawn mower is in the stopped state, and when the rear cover is in the unlocked state, the lawn mower can be normally started.

[0006] As a preferred embodiment, the lawn mower comprises a grass crushing mode, when the turning angle of the rear cover is 0°-175°, the rear cover is in the unlocked state, and when the turning angle of the rear cover is 175°-220°, the locking mechanism is triggered to make the rear cover in the locked state.

[0007] As a preferred embodiment, the lawn mower comprises a grass collecting mode, when the turning angle of the rear cover is 90°-175°, the rear cover is in the unlocked state, and when the turning angle of the rear cover is 175°-220°, the locking mechanism is triggered to make the rear cover in the locked state.

[0008] As a preferred embodiment, the locking mechanism comprises a power-off device, when the rear cover is in the locked state, the power-off device is triggered or closed to make the lawn mower in the stopped state, and when the rear cover is in the unlocked state, the power-off device is closed or triggered to make the lawn mower normally started.

[0009] As preferred, the power-off device comprises at least one of the following: a Hall plate arranged on the cover, a first magnet arranged on the back cover, and a controller for controlling the power supply state and electrically connected with the Hall plate, when the back cover is in the locked state, the first magnet is close to the Hall plate to make the controller power off, when the back cover is in the unlocked state, the first magnet is away from the Hall plate to make the controller power on; or, a switch arranged on the back cover and electrically connected with the power supply, when the back cover is in the locked state, the switch is used to power off, when the back cover is in the unlocked state, the switch is used to power on; or, a signal transmitting module arranged on the back cover, a controller for controlling the power supply state, and a signal receiving module arranged on the controller, when the back cover is in the locked state, the controller receives a power-off signal to power off, when the back cover is in the unlocked state, the controller receives a power-on signal to power on; or, a reed switch arranged on the cover, a second magnet arranged on the back cover, and a controller for controlling the power supply state and electrically connected with the reed switch, when the back cover is in the locked state, the second magnet is close to the reed switch to make the controller power off, when the back cover is in the unlocked state, the second magnet is away from the reed switch to make the controller power on.

[0010] As preferred, the locking mechanism comprises a second iron sheet arranged on the cover, and a second magnet arranged on the back cover, the second iron sheet cooperates with the second magnet to fix the back cover.

[0011] As preferred, the locking mechanism comprises a lock tongue fixedly arranged on the back cover, and a lock catch movably arranged in the cover and cooperatively clamped with the lock tongue, the lock catch comprises a housing, a slider movably arranged in the housing, a clasp and a rotating support rotatably arranged on the slider, a first compression spring connectedly arranged between the housing and the slider, and a first track and a second track fixedly arranged in the housing and cooperatively guided with the rotating support under the action of the first compression spring.

[0012] As preferred, the clasp comprises a first clasp and a second clasp symmetrically arranged, the first clasp and the second clasp cooperatively form a clamping position for fixing the lock tongue, and the first clasp and the second clasp can relatively rotate away from or close to each other to open or lock the clamping position.

[0013] As preferred, the locking mechanism comprises a knob cover fixedly arranged on the cover, a rotating rod, a knob and a second compression spring sequentially arranged in the knob cover, the second compression spring is limitingly arranged between the knob and the cover, one end of the rotating rod is movably arranged in the knob cover, and the other end of the rotating rod is fixedly connected with the back cover rotating shaft.

[0014] As preferred, the knob is circumferentially provided with a knob step, the knob is provided with a blocking column in the middle, a slope track is arranged between the blocking column and the knob step, a pressure relief hole is arranged in the slope track, the knob cover is provided with a first step and a second step matched with the knob step, and a top column matched with the slope track and the pressure relief hole is arranged on the rotating rod.

[0015] As preferred, an elastic member is arranged between the rear cover and the machine shell, and the elastic member acts on the rear cover to make the rear cover have a movement trend towards the grass frame.

[0016] Another object of the present application is to provide a mower start-stop control method applied to the mower start-stop control mechanism, and the method comprises:

[0017] S1. judging whether the rear cover is in a normal state according to a first preset condition;

[0018] S2. judging whether the machine can be started based on the first preset condition and a second preset condition;

[0019] S3. judging whether the machine is started based on the first preset condition and the second preset condition, and controlling the start and stop of the machine according to whether the grass frame is moved after the machine is started and a third preset condition;

[0020] The first preset condition comprises whether the rear cover overturning angle & or Q satisfies 0°-175°;

[0021] The second preset condition comprises whether the power switch is triggered;

[0022] The third preset condition comprises whether the rear cover overturning angle Z satisfies 175°-220 after the machine is started and the grass frame is moved;

[0023] Another object of the present application is to provide a mower comprising the mower start-stop control mechanism.

[0024] In summary, the present application has the following advantages:

[0025] The locking mechanism is arranged between the machine shell and the rear cover, when the mower is used, the rear cover is opened when the grass needs to be turned over, the rear cover is fixed through the locking mechanism after being overturned by a certain angle, the grass frame is taken down to turn over the grass, the rear cover does not need to be opened again to put back the grass frame after the grass is turned over, the rear cover is unlocked after the grass frame is put back, and the rear cover is automatically reset under the action of the elastic member. The whole operation process does not need to frequently open the rear cover to take and put the grass frame, the consumer is convenient to take and put the grass frame, and the use experience is good; and the power-off device is arranged, the power is automatically cut off and connected when the rear cover is overturned by a certain angle, the mower is automatically controlled to work, and the use safety is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic view of the first embodiment of the present application.

[0027] Figure 2 Structure diagram of the power-off device of the embodiment one of the present application;

[0028] Figure 3 Side view of the embodiment one of the present application;

[0029] Figure 4 Structure diagram of the Figure 3 Partial enlarged diagram of A in the structure diagram;

[0030] Figure 5 Explosion diagram of the embodiment two of the present application;

[0031] Figure 6 Structure diagram of the embodiment two of the present application;

[0032] Figure 7 Structure diagram of the lock catch in the embodiment two of the present application;

[0033] Figure 8 Structure diagram of the rotating support in the embodiment two of the present application;

[0034] Figure 9 Sectional view diagram of the sliding block in the embodiment two of the present application;

[0035] Figure 10 Explosion diagram of the embodiment three of the present application;

[0036] Figure 11 Structure diagram of the knob cover in the embodiment three of the present application;

[0037] Figure 12 Structure diagram of the knob in the embodiment three of the present application;

[0038] Figure 13 Structure diagram of the rotating rod in the embodiment three of the present application

[0039] Figure 14 Structure diagram of the lock catch mechanism in the embodiment three of the present application in b, c, d three states;

[0040] Figure 15 Control flow chart when the machine is in the grass crushing mode in the embodiment five of the present application;

[0041] Figure 16 Schematic diagram of the back cover in the unlocked state when the machine is in the grass crushing mode in the embodiment five of the present application;

[0042] Figure 17 Schematic diagram of the back cover in the locked state when the machine is in the grass crushing mode in the embodiment five of the present application;

[0043] Figure 18This is a control flowchart for the machine in hay-harvesting mode in Embodiment 5 of the present invention;

[0044] Figure 19 This is a schematic diagram showing the rear cover being unlocked when the machine is in the grass-collecting mode in Embodiment 5 of the present invention;

[0045] Figure 20 This is a schematic diagram showing the rear cover being locked when the machine is in the grass-collecting mode in Embodiment 5 of the present invention.

[0046] Figure label:

[0047] 1. Housing; 2. Straw frame; 21. Straw frame top cover; 3. Rear cover; 31. Rear cover pivot; 4. Elastic element; 5. Locking mechanism; 51. Second iron plate; 52. Second magnet; 53. Locking tongue; 54. Locking buckle; 541. Housing; 542. Slider; 5421. Insert groove; 5422. Fixed shaft; 5423. Arc groove; 543. Buckle; 5431. First buckle; 5432. Second buckle; 544. Rotating bracket; 5441. D-pin; 5442. Cylindrical pin; 545. First compression spring; 546. First track; 547. Second track; 55. Knob cover; 551. First step; 552. Second step; 56. Rotating rod; 561. Top post; 57. Knob; 571. Knob step; 572. 573, 5731, 5732, 573 ... Detailed Implementation

[0048] To more clearly illustrate the overall concept of the present invention, the invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," and "bottom," etc., indicating orientation or positional relationships, are based solely on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0049] Example 1

[0050] A lawnmower start / stop control mechanism, such as Figures 1 to 4 As shown, the lawnmower includes a housing 1, a rear cover 3, and a grass frame 2 disposed at one end of the housing 1. The rear cover 3 is rotatably mounted on the housing 1. A locking mechanism 5 is provided between the housing 1 and the rear cover 3 to lock the rear cover 3. When the rear cover 3 is locked, the lawnmower is in a stopped state, and when it is unlocked, the lawnmower can start normally.

[0051] The lawn mower comprises a mowing mode, the rear cover 3 is in the unlocked state when the turning angle of the rear cover 3 is 0°-175°, and the locking mechanism 5 is triggered to make the rear cover 3 in the locked state when the turning angle of the rear cover 3 is 175°-220°.

[0052] The lawn mower comprises a mowing mode, the rear cover 3 is in the unlocked state when the turning angle of the rear cover 3 is 0°-175°, and the locking mechanism 5 is triggered to make the rear cover 3 in the locked state when the turning angle of the rear cover 3 is 175°-220°.

[0053] The locking mechanism 5 comprises a power-off device 6, which is triggered or closed to make the lawn mower in the shutdown state when the rear cover 3 is in the locked state, and closed or triggered to make the lawn mower start normally when the rear cover 3 is in the unlocked state.

[0054] The power-off device 6 comprises at least one of the following: a Hall plate 61 arranged on the cover 7, a first magnet 63 arranged on the rear cover 3, and a controller for controlling the power supply state and electrically connected with the Hall plate 61, the first magnet 63 is close to the Hall plate 61 to make the controller cut off the power supply when the rear cover 3 is in the locked state, and the first magnet 63 is away from the Hall plate 61 to make the controller restore the power supply when the rear cover 3 is in the unlocked state; or a switch arranged on the rear cover 3 and electrically connected with the power supply, the switch is closed to cut off the power supply when the rear cover 3 is in the locked state, and the switch is closed to restore the power supply when the rear cover 3 is in the unlocked state; or a signal emitting module arranged on the rear cover 3, a controller for controlling the power supply state, and a signal receiving module arranged on the controller, the controller receives a power-off signal to cut off the power supply when the rear cover 3 is in the locked state, and the controller receives a power-on signal to restore the power supply when the rear cover 3 is in the unlocked state; or a reed tube arranged on the cover 7, a second magnet 52 arranged on the rear cover 3, and a controller for controlling the power supply state and electrically connected with the reed tube, the second magnet 52 is close to the reed tube to make the controller cut off the power supply when the rear cover 3 is in the locked state, and the second magnet 52 is away from the reed tube to make the controller restore the power supply when the rear cover 3 is in the unlocked state.

[0055] The switch can be a contact type mechanical switch, such as a power switch, a limit switch, a travel switch, etc., or a non-contact type switch, such as an inductive switch, a photoelectric switch, an infrared switch, a digital switch, etc.

[0056] The locking mechanism 5 includes a second iron plate 51 disposed on the cover 7 and a second magnet 52 disposed on the rear cover 3. The second iron plate 51 and the second magnet 52 cooperate to fix the rear cover 3.

[0057] An elastic element 4 is provided between the back cover 3 and the housing 1. The elastic element 4 acts on the back cover 3 to make the back cover 3 have a tendency to move toward the grass frame 2.

[0058] During operation, the power-off device 6 and the locking mechanism 5 work together to flip the rear cover 3. Taking the Hall plate 61 as an example, when the rear cover 3 flips and slowly approaches the Hall plate 61, the Hall plate 61 receives a low level. At this time, the Hall plate 61 disconnects the signal from the controller 9, and the lawnmower automatically cuts off the power. When the rear cover 3 continues to flip, the rear cover 3 is fixed by the locking mechanism 5, which facilitates the taking and putting away of the grass frame 2. After emptying the grass and putting it back into the grass frame 2, when the rear cover 3 flips and slowly moves away from the Hall plate 61, the Hall plate 61 receives a high level. At this time, the Hall plate 61 connects the signal to the controller 9, and the lawnmower automatically turns on the power to work.

[0059] Example 2

[0060] Unlike Example 1, as Figures 5 to 9 As shown, the locking mechanism 5 includes a locking tongue 53 fixedly mounted on the rear cover 3, and a latch 54 movably mounted inside the cover 7 and engaging with the locking tongue 53. The latch 54 includes a housing 541, a slider 542 movably mounted inside the housing 541, a buckle 543 and a rotating bracket 544 rotatably mounted on the slider 542, a first compression spring 545 connecting the housing 541 and the slider 542, and a first track 546 and a second track 547 fixedly mounted inside the housing 541 and engaging with the rotating bracket 544 under the action of the first compression spring 545.

[0061] Specifically, the bottom of the slider 542 is provided with a groove 5421, and a fixed shaft 5422 is horizontally placed in the groove 5421. An arc-shaped groove 5423 is provided on one side of the fixed shaft 5422. The first compression spring 545 is fixed on the shaft 5422. One end of the rotating bracket 544 is rotatably disposed in the arc-shaped groove 5423. The other end of the rotating bracket 544 can move along the first track 546 and the second track 547 under the action of the first compression spring 545.

[0062] The buckle 543 includes a first buckle 5431 and a second buckle 5432 arranged symmetrically. The first buckle 5431 and the second buckle 5432 form a buckle position for fixing the locking tongue 53. The first buckle 5431 and the second buckle 5432 can rotate relative to each other to move away from or closer to each other to open or close the buckle position.

[0063] During operation, the power-off device 6 and the locking mechanism 5 work together when the rear cover 3 flips and slowly approaches the Hall plate 61. The Hall plate 61 receives a low level signal, and at this time, the Hall plate 61 disconnects the signal from the controller 9, and the lawnmower automatically cuts off the power. When the rear cover 3 continues to flip, the rear cover 3 is fixed and locked by the locking mechanism 5, which facilitates the taking and putting away of the grass frame 2. After emptying the grass and putting it back into the grass frame 2, the rear cover 3 is unlocked by continuing to flip. When the rear cover 3 flips and slowly moves away from the Hall plate 61, the Hall plate 61 receives a high level signal. At this time, the Hall plate 61 connects the signal to the controller 9, and the lawnmower automatically turns on the power and starts working.

[0064] Other content not described in this embodiment can be found in Embodiment 1.

[0065] Example 3

[0066] Unlike Example 1, as Figures 10 to 14 As shown, the locking mechanism 5 includes a knob cover 55 fixedly mounted on the cover, a rotating rod 56, a knob 57, and a second compression spring 58 sequentially mounted inside the knob cover 55. The second compression spring 58 is positioned between the knob 57 and the cover. One end of the rotating rod 56 is movably inserted inside the knob cover 55, and the other end of the rotating rod 56 is fixedly connected to the rear cover pivot 3.

[0067] The knob 57 has a knob step 571 around its circumference, and a stop post 572 is provided in the middle of the knob 57. A ramp rail 573 is provided between the stop post 572 and the knob step 571. A pressure relief hole 5731 is provided in the ramp rail 573. The knob cover 55 has a first step 551 and a second step 552 that cooperate with the knob step 571. The rotating rod 56 has a top post 561 that cooperates with the ramp rail 573 and the pressure relief hole 5731.

[0068] During operation, the power-off device 6 and the locking mechanism 5 work together when the rear cover 3 flips and slowly approaches the Hall plate 61. The Hall plate 61 receives a low level signal, and at this time, the Hall plate 61 disconnects the signal from the controller 9, and the lawnmower automatically cuts off the power. When the rear cover 3 continues to flip, the rear cover 3 is fixed and locked by the locking mechanism 5, which facilitates the taking and putting away of the grass frame 2. After emptying the grass and putting it back into the grass frame 2, the rear cover 3 is unlocked by continuing to flip. When the rear cover 3 flips and slowly moves away from the Hall plate 61, the Hall plate 61 receives a high level signal. At this time, the Hall plate 61 connects the signal to the controller 9, and the lawnmower automatically turns on the power and starts working.

[0069] Other content not described in this embodiment can be found in Embodiment 1 and Embodiment 2.

[0070] Example 4

[0071] A lawnmower includes the aforementioned lawnmower start / stop control mechanism.

[0072] Example Five

[0073] A mower start-stop control method applied to a mower start-stop control mechanism, the method comprising:

[0074] S1. Determine whether the rear cover 3 is in a normal state according to a first preset condition;

[0075] S2. Determine whether the machine can start based on the first preset condition and according to a second preset condition;

[0076] S3. Based on the first preset condition and the second preset condition, determine whether the grass frame 2 is moved after the machine starts, and control the start and stop of the machine according to a third preset condition;

[0077] The first preset condition includes whether the rear cover 3 flip angle & or Q satisfies 0°-175°;

[0078] The second preset condition includes whether the power switch is triggered;

[0079] The third preset condition includes whether the rear cover 3 flip angle Z satisfies 175°-220 after the machine starts and the grass frame 2 is moved.

[0080] Referring to Figures 15 to 17 When the mower is in the grass cutting mode, the control method comprises the following steps:

[0081] S1. One-key start;

[0082] S2. Determine the flip angle & of the rear cover 3; if the rear cover 3 flip angle & does not satisfy 0°-175°, it means that the machine is in an abnormal state, and the process is ended; when the rear cover 3 flip angle & satisfies 0°-175°, it means that the machine is in a normal state, and at this time the rear cover 3 is not locked, and it is determined whether the power switch is triggered;

[0083] S3. Determine whether the power switch is triggered; when the rear cover 3 flip angle & satisfies 0°-175°, if the power switch is not triggered, the power supply is not powered, and the process is ended;

[0084] If the power switch is triggered, the power supply is powered, the machine starts, and it is determined whether the grass frame 2 is moved after starting;

[0085] S4. Determine whether the grass frame 2 is moved after starting; when the machine starts and the grass frame 2 is moved, the rear cover 3 flip angle Z is 175°-220°, the machine stops, and the process is ended;

[0086] When the machine starts and the grass frame 2 is moved, the rear cover 3 flip angle Z does not satisfy 175°-220°, and the machine continues to work.

[0087] Referring to Figures 18 to 20As shown, when the mower is in the grass collecting mode, the control method comprises the following steps:

[0088] S1. One-key starting;

[0089] S2. Judging the turning angle Q of the rear cover 3; if the turning angle Q of the rear cover 3 does not satisfy 90°-175°, it means that the machine is in an abnormal state, and the process is ended; if the turning angle Q of the rear cover 3 satisfies 90°-175°, it means that the machine is in a normal state, and at this time, the rear cover 3 is not locked, and whether the power switch is triggered is judged;

[0090] S3. Judging whether the power switch is triggered; if the turning angle Q of the rear cover 3 satisfies 90°-175°, and if the power switch is not triggered, the power supply is not powered, and the process is ended;

[0091] If the power switch is triggered, the power supply is powered, the machine is started, and after starting, whether the grass frame 2 is moved is judged;

[0092] S4. Judging whether the grass frame 2 is moved after starting; if the grass frame 2 is moved after the machine is started, the turning angle Z of the rear cover 3 is in 175°-220°, the machine is stopped, and the process is ended;

[0093] If the grass frame 2 is moved after the machine is started, the turning angle Z of the rear cover 3 does not satisfy 175°-220°, and the machine continues to work.

[0094] In addition to the preferred embodiments described above, the present application has other embodiments, and those skilled in the art can make various changes and modifications according to the present application, as long as they do not deviate from the spirit of the present application, which shall belong to the scope defined by the appended claims of the present application.

Claims

1. A lawnmower start / stop control mechanism, comprising a housing, a rear cover, and a grass frame disposed at one end of the housing, characterized in that: The rear cover is rotatably mounted on the housing. A locking mechanism is provided between the housing and the rear cover to lock the rear cover. When the rear cover is locked, the lawnmower is stopped, and when it is unlocked, the lawnmower can start normally. The lawnmower includes a grass-chopping mode. When the rear cover's rotation angle is between 0° and 175°, the rear cover is unlocked. When the rear cover's rotation angle is between 175° and 220°, the locking mechanism is triggered, locking the rear cover. The lawnmower also includes a grass-collecting mode. When the rear cover's rotation angle is between 90° and 175°, the rear cover is unlocked. When the rear cover's rotation angle is between 175° and 220°, the locking mechanism is triggered, locking the rear cover.

2. The lawnmower start / stop control mechanism according to claim 1, characterized in that: The locking mechanism includes a power-off device. When the rear cover is in the locked state, the power-off device is triggered or closed to stop the lawnmower. When the rear cover is in the unlocked state, the power-off device is closed or triggered to allow the lawnmower to start normally.

3. The lawnmower start / stop control mechanism according to claim 2, characterized in that: The power-off device includes at least one of the following: a Hall plate disposed on the cover, a first magnet disposed on the rear cover, and a controller electrically connected to the Hall plate for controlling the power supply state. When the rear cover is in a locked state, the first magnet approaches the Hall plate to cause the controller to disconnect the power supply. When the rear cover is in an unlocked state, the first magnet moves away from the Hall plate to cause the controller to restore the power supply. Alternatively, a switch is installed on the back cover and electrically connected to the power supply. When the back cover is in the locked state, the power supply is disconnected by the switch, and when the back cover is in the unlocked state, the power supply is restored by the switch. Alternatively, a signal transmitting module mounted on the back cover, a controller for controlling the power supply status, and a signal receiving module mounted on the controller. When the back cover is in the locked state, the controller receives a power-off signal and disconnects the power supply; when the back cover is in the unlocked state, the controller receives a power-on signal and restores the power supply. Alternatively, a reed switch mounted on the cover, a second magnet mounted on the back cover, and a controller electrically connected to the reed switch for controlling the power supply status. When the back cover is in the locked state, the second magnet approaches the reed switch to disconnect the power supply; when the back cover is in the unlocked state, the second magnet moves away from the reed switch to restore the power supply.

4. The lawnmower start / stop control mechanism according to claim 2, characterized in that: The locking mechanism includes an iron sheet on the cover and a third magnet on the back cover, the iron sheet and the third magnet working together to fix the back cover.

5. The lawnmower start / stop control mechanism according to claim 2, characterized in that: The locking mechanism includes a locking tongue fixedly mounted on the rear cover and a latch movably mounted inside the cover and engaging with the locking tongue. The latch includes a housing, a slider movably mounted inside the housing, a buckle and a rotating bracket rotatably mounted on the slider, a first compression spring connecting the housing and the slider, and a first track and a second track fixedly mounted inside the housing and cooperating with the rotating bracket for guidance under the action of the first compression spring.

6. The lawnmower start / stop control mechanism according to claim 5, characterized in that: The buckle includes a first buckle and a second buckle arranged symmetrically. The first buckle and the second buckle form a buckle position for fixing the locking tongue. The first buckle and the second buckle can rotate relative to each other to move away from or towards each other to open or close the buckle position.

7. The lawnmower start / stop control mechanism according to claim 2, characterized in that: The locking mechanism includes a knob cover fixedly mounted on the cover, a rotating rod, a knob, and a second compression spring sequentially mounted inside the knob cover. The second compression spring is positioned between the knob and the cover. One end of the rotating rod is movably inserted inside the knob cover, and the other end of the rotating rod is fixedly connected to the rear cover pivot.

8. The lawnmower start / stop control mechanism according to claim 7, characterized in that: The knob is provided with a knob step around its circumference, and a stop post is provided in the middle of the knob. A ramp rail is provided between the stop post and the knob step. A pressure relief hole is provided in the ramp rail. The knob cover is provided with a first step and a second step that cooperate with the knob step. The rotating rod is provided with a top post that cooperates with the ramp rail and the pressure relief hole.

9. A lawnmower start / stop control mechanism according to any one of claims 5-8, characterized in that: An elastic element is provided between the back cover and the housing, and the elastic element acts on the back cover to make the back cover tend to move toward the grass frame.

10. A lawnmower, characterized in that: Includes the lawnmower start / stop control mechanism as described in any one of claims 1-9.

11. A method for controlling the start and stop of a lawnmower, characterized in that, The method, applied to the lawnmower start / stop control mechanism as described in any one of claims 1 to 9, comprises: S1. Determine whether the back cover is in a normal state based on the first preset condition; S2. Based on the first preset condition, determine whether the machine can start according to the second preset condition; S3. Based on the first and second preset conditions, and depending on whether the straw frame has been moved after the machine starts, and according to the third preset condition, control the machine to start and stop. The first preset condition includes whether the back cover flip angle & or Q meets the requirement of 0° to 175°; The second preset condition includes whether the power switch is triggered; The third preset condition includes whether the rear cover flip angle Z meets the requirement of 175°~220° after the machine is started and moves past the straw frame.

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