A lawnmower

Abstract

The utility model provides a mower relates to the field of mower. The mower includes frame, walking mechanism and control mechanism, walking mechanism sets up in the frame, walking mechanism drives the mower moves, control mechanism sets up in the frame, control mechanism controls walking mechanism, control mechanism includes detection device, and detection device is used for detecting whether the control mechanism is held by operating personnel. Eliminate the resistance of return spring when operating personnel releases the parking state, greatly reduce the operation difficulty of driver, alleviate the tired feeling because of overcoming the resistance of return spring, and the mower of the application enters the parking state and stops more timely, improve the safety of equipment and personnel.

Description

[0001] This application claims priority to the patent application filed on June 20, 2024, with application number 202421421571.8 and invention title "A Lawn Mower". Technical Field

[0002] This utility model relates to the field of lawnmowers, specifically to a lawnmower. Background Technology

[0003] A lawnmower is a gardening tool used for trimming lawns, vegetation, etc. After starting the lawnmower, the control lever must be in the parking position. When the lawnmower needs to be driven, the parking position must be released. Traditional lawnmowers require overcoming the resistance of the return spring in the control mechanism when releasing the parking position. The operator constantly has to overcome the mechanical return torque during operation, which increases hand fatigue over long periods. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present invention provides a lawnmower to improve the technical problem that existing lawnmowers require constant overcoming of the mechanical structure's return torque when releasing the parking state, which easily increases the driver's hand fatigue.

[0005] To achieve the above and other related objectives, this utility model provides a lawnmower, including a frame, a walking mechanism, and a control mechanism; the walking mechanism is disposed on the frame and drives the lawnmower to move; the control mechanism is disposed on the frame and controls the walking mechanism, and the control mechanism includes a detection device for detecting whether the control mechanism is being held by an operator.

[0006] In an exemplary embodiment of this application, the operating mechanism includes a joystick, and the detection device is disposed on the joystick.

[0007] In an exemplary embodiment of this application, the operating mechanism includes two joysticks, each of which is equipped with the detection device.

[0008] In an exemplary embodiment of this application, when any of the detection devices detects that the operator is not holding the mower, the mower enters a parking state.

[0009] In an exemplary embodiment of this application, the detection device includes a detection sensor.

[0010] In an exemplary embodiment of this application, the detection sensor is one or more of the following: torque sensor, capacitance sensor, voltage sensor, pressure sensor, optical sensor, ultrasonic sensor, temperature sensor, and biometric sensor.

[0011] In an exemplary embodiment of this application, an insulating layer is provided on the outer periphery of the control lever, and the detection device is disposed on the side of the insulating layer opposite to the control lever.

[0012] In an exemplary embodiment of this application, the joystick is covered with a cover layer, and the detection device is disposed between the cover layer and the joystick, or the detection device is embedded in the cover layer.

[0013] In an exemplary embodiment of this application, the detection device includes a detection controller, which is signal-connected to the detection sensor, and the detection sensor is signal-connected to the lawnmower vehicle controller.

[0014] In an exemplary embodiment of this application, the joystick includes a horizontal rod and a vertical rod connected to the horizontal rod, and the detection sensor is provided on both the horizontal rod and the vertical rod.

[0015] In combination with existing technologies, the beneficial effects of this utility model are as follows:

[0016] Existing lawnmowers require constant overcoming of the mechanical return torque during operation to maintain a non-parking state, increasing operator fatigue over extended periods. This invention addresses this issue by incorporating a detection device into the operating mechanism. This device detects whether the operator is holding the mechanism. When the operator holds the mechanism, the lawnmower releases from parking mode, eliminating the resistance of the return spring and significantly reducing operator difficulty and fatigue associated with overcoming spring resistance. When the detection device detects that the operator is not holding the mechanism, the lawnmower enters parking mode. Compared to existing lawnmowers that require the operating mechanism to be returned to its original position before entering parking mode, this invention allows for more timely parking and shutdown, improving equipment and personnel safety. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of an exemplary ride-on lawnmower of this application;

[0019] Figure 2 This is a schematic diagram of an exemplary standing lawnmower according to this application;

[0020] Figure 3This is a schematic diagram of a portion of an exemplary lawnmower mechanism according to this application;

[0021] Figure 4 This is a schematic diagram of an exemplary joystick according to this application;

[0022] Figure 5 This is another exemplary joystick diagram of this application;

[0023] Figure 6 For this application Figure 4 Schematic diagram of the section AA in the middle;

[0024] Figure 7 This is a schematic diagram of an exemplary detection sensor signal connection according to this application.

[0025] Component designation explanation

[0026] 100. Control mechanism;

[0027] 110. Detection device; 111. Detection sensor;

[0028] 120. Control lever; 121. Lateral lever; 122. Longitudinal lever; 123. Insulation layer; 124. Covering layer;

[0029] 200. Walking mechanism;

[0030] 300. Cutting platform assembly. Detailed Implementation

[0031] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of this utility model is for describing specific implementation schemes and not for limiting the scope of protection of this utility model. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0032] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise stated in this invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention, as well as the prior art known to those skilled in the art and the description of this invention, may be implemented using any prior art methods, devices, and materials similar to or equivalent to those described, used, or made of materials in the embodiments of this invention.

[0033] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0034] When driving a lawnmower, the parking position must be released. Traditional lawnmowers require overcoming the resistance of the return spring in the control mechanism when releasing the parking position, which can easily increase driver fatigue over time.

[0035] Please see Figures 1 to 7 Therefore, this application provides a lawnmower, including a frame, a walking mechanism 200, and a control mechanism 100. The frame provides support for some components of the lawnmower, and the walking mechanism 200 is mounted on the frame, driving the lawnmower to move. In one embodiment of this application, the walking mechanism 200 includes drive wheels and walking wheels, and the control mechanism 100 controls the drive wheels to achieve parking and movement of the lawnmower. The control mechanism 100 is mounted on the frame and controls the walking mechanism 200. The control mechanism 100 includes a detection device 110, which detects whether the control mechanism 100 is being held by an operator. When the detection device 110 detects that an operator is holding the control mechanism 100, the parking state of the lawnmower is released, allowing the operator to control the movement of the lawnmower. The control mechanism 100 does not have the resistance of a return spring, thereby reducing operator fatigue. When the detection device 110 detects that no operator is holding the control mechanism 100, it enters the parking state and cuts off the power to the lawnmower. Existing lawnmowers require the control mechanism to return to its original position before entering the parking state, resulting in a slow stopping speed. This application can quickly cut off the power to the lawnmower, allowing for more timely stopping and improving equipment and personnel safety. Please refer to [link / reference]. Figure 1 and Figure 2 In one embodiment of this application, the lawnmower includes a mower assembly 300, which is used to trim and cut the lawn. The mower assembly 300 includes a cutter blade, a cutter motor, etc. The cutter motor drives the cutter blade to rotate, thereby achieving the trimming of the lawn.

[0036] In one embodiment of the lawnmower, the operating mechanism 100 includes a joystick 120, which is convenient for the operator to hold and operate. The detection device 110 is disposed on the joystick 120, which can more conveniently and directly detect whether the operator is holding the operating mechanism, thereby facilitating the control of whether the lawnmower enters the parking state.

[0037] In one embodiment of this application, the operator holds the control mechanism 100, which can be the operator gripping the control mechanism 100, the operator touching the control mechanism 100 with their fingers or limbs, or the operator directly or indirectly applying force to the control mechanism 100.

[0038] Please see Figure 1 and Figure 2 In one embodiment of the lawnmower, the control mechanism 100 includes two control levers 120, namely a left control lever 120 and a right control lever 120. The two control levers 120 are convenient for the operator to hold with their left and right hands respectively. The two control levers 120 control the rotational speed of the left and right travel wheels respectively, thereby realizing the lawnmower's forward, backward, and turning actions. Each of the two control levers 120 is equipped with a detection device 110 to detect whether an operator is holding either of the left and right control levers 120.

[0039] Please see Figure 5 In one embodiment of the lawnmower, the control lever 120 includes a horizontal lever 121 and a vertical lever 122 connected to the horizontal lever 121. By providing the horizontal lever 121 and the vertical lever 122, it is convenient for operators with different operating habits to operate the lawnmower. For example, some operators are accustomed to holding the horizontal lever 121, while others are accustomed to holding the vertical lever 122. Both the horizontal lever 121 and the vertical lever 122 are equipped with detection sensors 111, thereby ensuring that detection can be performed when the operator holds the horizontal lever 121 or the vertical lever 122, improving the accuracy of detecting the operator's grip on the control lever 120, and meeting the different usage habits of operators.

[0040] In one embodiment of the lawnmower, when either of the detection devices 110 detects that the operator is not holding the control mechanism 100, it determines that the operator is not in position, and the lawnmower enters the parking state. When the detection devices 110 on both the left and right control levers 120 detect that the operator is holding the control mechanism 100, it determines that the operator is in position, and the lawnmower releases the parking state. The left and right control levers 120 control the rotation speed of the left and right travel wheels respectively. When one control lever 120 is not held by the operator, if the lawnmower is not in the parking state, one of the travel wheels may rotate, which could easily lead to a hazard. By using the detection devices 110 on the left and right control levers 120 to detect whether the operator is holding either of the left and right control levers 120, the occurrence of the lawnmower mistakenly releasing the parking state due to the operator accidentally touching the detection devices 110 can be reduced, thereby reducing the risk of misoperation and improving the safety of the lawnmower. The lawnmower of this application enters or remains in a parking state when either of the left or right control levers 120 is not held by the operator, thereby ensuring the safety of the equipment and the operator.

[0041] In one embodiment of the lawnmower, the detection device 110 includes a detection sensor 111, which is used to detect whether the operator is holding the control mechanism 100. The detection sensor 111 can be one or more of the following: torque sensor, capacitance sensor, voltage sensor, pressure sensor, optical sensor, ultrasonic sensor, temperature sensor, and biometric sensor, to facilitate the detection of whether the operator is holding the control mechanism 100.

[0042] In one embodiment of the lawnmower, the detection sensor 111 is a torque sensor, which is mounted on the rotation shaft of the control lever 120. The torque sensor detects the torque applied by the operator to the control lever 120 to determine whether the operator is holding the control lever 120. When a torque applied by the operator is detected, it is determined that the operator is holding the control lever 120, and the lawnmower is released from its parking state; when no torque is detected, it is determined that the operator is not holding the control lever 120, and the lawnmower enters its parking state.

[0043] In one embodiment of the lawnmower, the detection sensor 111 is a capacitive sensor, which is disposed on the surface of the control lever 120. The capacitive sensor is fixed to the control lever 120 by methods including but not limited to covering, embedding, and adhesive fixing. The capacitive sensor can detect the presence of the operator's hand or other body parts. When the operator touches the control lever 120, the capacitance value changes. The controller determines whether the operator is holding the control lever 120 by monitoring the change in capacitance value, thereby controlling the lawnmower to enter or exit the parking state.

[0044] In one embodiment of the lawnmower, a capacitive sensor is wrapped or wrapped around the control lever 120, meaning that a capacitive sensor is provided on the outer peripheral surface of at least a portion of the length of the control lever 120. This makes it easier to detect whether the operator is holding the control lever 120, accommodating the operating habits of different operators. For example, some operators are accustomed to having their palms in contact with the back of the control lever 120 when pushing it forward, and their fingers in contact with the front of the control lever 120 when pulling it backward; other operators are accustomed to keeping their hands firmly on the control lever 120 at all times.

[0045] In one embodiment of the lawnmower, the detection sensor 111 is an optical sensor. The optical sensor is mounted on the joystick 120 and detects the position and movement of the operator's hand by reflecting light. The optical sensor can accurately determine whether the operator is holding the joystick 120.

[0046] In one embodiment of the lawnmower, the detection sensor 111 is a pressure sensor. The pressure sensor is installed on the surface of the control lever 120 to detect the pressure it carries. When the detected pressure carried by the pressure sensor is lower than a preset threshold range, it is determined that the operator is not holding the control lever 120; when the detected pressure carried by the pressure sensor is within the preset threshold range, it is determined that the operator is holding the control lever 120, and the parking state is released.

[0047] In one embodiment of the lawnmower, the detection sensor 111 is a biometric sensor, such as a fingerprint sensor or a heart rate sensor, to determine whether the operator is holding the joystick 120.

[0048] In one embodiment of the lawnmower, the detection device 110 covers at least two areas on the control lever 120 to prevent accidental disengagement of the parking position by the operator. This includes covering at least the front and rear sides of the control lever 120, and the upper and lower sides. In another embodiment, the detection device 110 is located on the front side of the control lever 120, i.e., the control lever 120 is located on the side of the front end of the lawnmower in the forward direction. When the operator operates the lawnmower, they are positioned behind the control lever 120. The placement of the detection device 110 on the front side of the control lever 120 reduces the risk of accidental contact and improves the safety of the lawnmower. In yet another embodiment of this application, the detection device 110 covers at least a portion of the outer periphery of the control lever 120, allowing detection in various gripping positions such as grasping, finger touching, palm touching, or limb touching, catering to a wider range of operator habits.

[0049] In one embodiment of the lawnmower, the detection range of the detection device 110 extends 175mm to 275mm from the end of the transverse rod 121 towards the longitudinal rod 122. Taking a capacitive sensor as an example, the capacitive sensor extends from the end of the transverse rod 121 towards the longitudinal rod 122, with a total length of 175mm to 275mm. The total length can be any value between 175mm and 275mm, such as 175mm, 190mm, 225mm, or 275mm, which can meet the detection needs of the operator's grip. Furthermore, the total length of the capacitive sensor can be 200mm to 250mm, and can be any value between 200mm and 250mm, such as 200mm, 225mm, or 250mm, to more accurately detect the operator's grip. The capacitive sensor is set from the end of the horizontal bar 121 away from the vertical bar 122. This is convenient for some operators who need to hold both horizontal bars 121 with one hand to control the lawnmower in special circumstances. The detection device 110 can detect that there are operators holding both horizontal bars 121, so that the lawnmower remains in the released parking state.

[0050] Furthermore, the detection area of ​​the detection device 110 on the longitudinal rod 122 has a length of 140mm to 240mm. Taking a capacitive sensor as an example, a capacitive sensor is installed on the longitudinal rod 122, and the length of the capacitive sensor is set to 140mm to 240mm. It can be any value between 140mm and 240mm, such as 140mm, 190mm, 240mm, etc., to ensure that the operator's gripping state is detected when the operator holds the longitudinal rod 122. Furthermore, the capacitive sensor is set from the junction of the longitudinal rod 122 and the transverse rod 121 in a direction away from the transverse rod 121, and the preferred length is 165mm to 215mm. The length can be any value between 165mm and 215mm, such as 165mm, 190mm, 192mm, 240mm, etc., to improve the accuracy of detecting the operator's gripping state.

[0051] In one embodiment of this lawnmower, an insulating layer 123 is provided around the outer periphery of the control lever 120. The detection device 110 is disposed on the side of the insulating layer 123 away from the control lever 120. On the one hand, the insulating layer 123 can prevent the metal control lever 120 from affecting the detection of the detection device 110. On the other hand, the insulating layer 123 can provide a certain degree of protection for the detection device 110, preventing direct collision between the detection device 110 and the control lever 120 during lawnmower operation due to bumps and vibrations, thus avoiding damage to the detection device 110. The insulating layer 123 is preferably made of materials such as rubber or plastic, which has both insulating properties and provides a certain degree of cushioning protection for the detection device 110.

[0052] Please see Figure 6In one embodiment of this lawnmower, the control lever 120 is covered with a cover layer 124, and the detection device 110 is disposed between the cover layer 124 and the control lever 120, or the detection device 110 is embedded in the cover layer 124. The cover layer 124 is preferably made of rubber, plastic, or other materials to improve operator comfort. Furthermore, the surface of the cover layer 124 is treated with an anti-slip coating, such as anti-slip particles, anti-slip patterns, or an additional anti-slip layer. If the detection device 110 is a pressure sensor, it can be disposed between the cover layer 124 and the control lever 120, or embedded in the cover layer 124; if the detection device 110 is an optical sensor or a capacitive sensor, it is embedded in the cover layer 124 and mounted on the control lever 120 to detect whether the operator is holding the lever. It should be noted that in this embodiment, the detection device 110 is not a torque sensor. When the detection device 110 is a torque sensor, the detection device 110 needs to be installed on the rotating shaft of the control lever 120.

[0053] Please see Figure 7 In one embodiment of this lawnmower, the detection device 110 includes a detection controller, which is signal-connected to the detection sensor 111, and the detection sensor 111 is signal-connected to the lawnmower's vehicle controller. The detection controller receives and processes the signal from the detection sensor 111, converts the signal into a CAN signal, and sends it to the vehicle controller. The vehicle controller controls the lawnmower's movement and vehicle logic. Upon receiving the CAN signal from the detection controller, the vehicle controller controls the lawnmower to either release or enter a parking state.

[0054] The lawnmower of this application can be as follows: Figure 1 The ride-on lawnmower shown can also be... Figure 2 The lawnmower shown is a standing type. The lawnmower of this application also includes other components such as a housing. Please refer to existing lawnmowers for details.

[0055] This utility model discloses a lawnmower that eliminates the resistance of the return spring when the operator releases the parking position, greatly reducing the difficulty of operation for the driver and alleviating fatigue caused by overcoming the resistance of the return spring. When the detection device detects that the operator is not holding the mower, the lawnmower enters the parking position, ensuring timely stopping and improving the safety of both the equipment and personnel. Therefore, this utility model effectively overcomes some practical problems in the prior art, thus having high utilization value and practical significance. The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit it. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A lawnmower, characterized in that, include: frame; A walking mechanism is mounted on the frame, and the walking mechanism drives the lawnmower to move; An operating mechanism is provided on the frame, the operating mechanism controls the walking mechanism, and the operating mechanism includes a detection device for detecting whether the operating mechanism is being held by an operator.

2. The lawnmower according to claim 1, characterized in that, The control mechanism includes a joystick, and the detection device is disposed on the joystick.

3. The lawnmower according to claim 2, characterized in that, The control mechanism includes two joysticks, and the detection device is provided on each of the two joysticks.

4. The lawnmower according to claim 3, characterized in that, When any of the detection devices detects that the operator is not holding the mower, the mower enters a parking state.

5. The lawnmower according to claim 2, characterized in that, The detection device includes a detection sensor.

6. The lawnmower according to claim 5, characterized in that, The detection sensor is one or more of the following: torque sensor, capacitance sensor, voltage sensor, pressure sensor, optical sensor, ultrasonic sensor, temperature sensor, and biometric sensor.

7. The lawnmower according to claim 5, characterized in that, An insulating layer is provided on the outer periphery of the control stick, and the detection device is located on the side of the insulating layer away from the control stick.

8. The lawnmower according to claim 7, characterized in that, The joystick is covered with a cover layer, and the detection device is disposed between the cover layer and the joystick, or the detection device is embedded in the cover layer.

9. The lawnmower according to claim 5, characterized in that, The detection device includes a detection controller, which is signal-connected to the detection sensor, and the detection sensor is signal-connected to the lawnmower vehicle controller.

10. The lawnmower according to claim 5, characterized in that, The joystick includes a horizontal bar and a vertical bar connected to the horizontal bar, and the detection sensor is provided on both the horizontal bar and the vertical bar.

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