Outdoor garden work vehicle and riding mower

Abstract

The present invention relates to an electric outdoor garden work vehicle, comprising: a frame, a left drive axle assembly, a right drive axle assembly, a mowing component, a power supply component, and a brake module. The brake module comprises a brake parking assembly and a brake master cylinder; the brake parking assembly comprises a pedal assembly; when a user steps on the pedal assembly, the brake master cylinder is pressed to apply a braking force to the left drive axle assembly and the right drive axle assembly; and a hydraulic force damping adjustment mechanism is provided at the brake master cylinder, thereby allowing for further stepping on the pedal assembly when hydraulic oil in the brake master cylinder is compressed to reach the limit. Therefore, the user does not perceive feedback of an excessively stiff brake throughout stepping on the pedal assembly; and additionally, a damping member has an initial damping force after being assembled, such that a pedal counterforce experienced by the user throughout stepping on the pedal assembly increases gradually, and abrupt increase of the counterforce is avoided, thereby enhancing the overall braking experience of the user.

Description

Outdoor gardening vehicle and riding lawn mower

[0001] This application claims the priority of Chinese patent application number 202311853829.1 filed with the China Patent Office on December 29, 2023, the priority of Chinese patent application number 202311853828.7 filed with the China Patent Office on December 29, 2023, the priority of Chinese patent application number 202311853833.8 filed with the China Patent Office on December 29, 2023, and the priority of Chinese patent application number 202311856724.1 filed with the China Patent Office on December 29, 2023, the entire contents of which are incorporated herein by reference. [Technical field]

[0002] The present invention relates to the technical field of gardening operation vehicles, and in particular to an outdoor gardening operation vehicle. [Background Technology]

[0003] Outdoor gardening vehicles generally refer to vehicles used for outdoor gardening operations, mainly including vehicles used for cutting and maintaining garden grass.

[0004] The entire vehicle of a gardening work vehicle needs to travel in the garden, so it must be equipped with brake components to brake it. For example, the Chinese patent with the publication number CN207269396U discloses a brake parking mechanism for an electric zero-turn lawn mower. The patent has an operating mechanism and a brake mechanism. The operating mechanism is located at the front end of the frame and includes a brake pedal and a parking pedal. The brake mechanism includes a hub motor connected to the wheel and a brake caliper located on the frame. The brake caliper corresponds to the brake disc of the hub motor. Referring to the accompanying drawings, it can be clearly seen that the brake disc of this technology is located on the wheel axle. Although this patent can achieve a certain braking effect on the wheel, because its brake disc is set on the wheel axle, the brake caliper needs to provide a very large clamping torque to achieve effective braking force, and it is difficult for the user to achieve a good braking effect by directly stepping on it.

[0005] To effectively maintain a vehicle in a specific position, a parking system is typically installed on the vehicle to maintain its relative position when parked. For example, U.S. Patent Publication No. US11589513B2 discloses an integrated parking brake system for a riding lawn care vehicle. The system includes a parking brake device that activates based on an operator presence system detecting the presence or absence of an operator near the electric off-road work vehicle. The operator presence system can send a signal to a controller, which can command the parking brake device to activate between an engaged and disengaged state. The patent clearly distinguishes between braking and parking operations. According to user operating habits, a higher braking force should be equivalent to a parking state or directly enter the parking state. Therefore, the operating habits of this patent make it difficult for users to adapt.

[0006] Braking generally involves pressing or stepping on a certain component to apply braking force to the brake system. Due to the structural limitations of the brake disc in the brake system, the friction plate that contacts it cannot continue to move after it moves to completely contact the brake disc, resulting in the user being unable to continue pressing or stepping on the component and feeling that the brakes are too hard, which brings a bad user experience. For example, Chinese patent publication number CN114684080B discloses a braking system for an electric lawn mower. The patent integrates service braking, emergency braking and parking braking functions through a brake operating assembly, but it sets a lower limit bolt to limit the position of the pedal, which obviously makes it impossible to continue stepping on the pedal after braking, resulting in a hard braking feeling. In addition, in the patent, stepping on the brake pedal a second time in the parking state will release the parking state, which will also increase the possibility of misoperation.

[0007] In view of this, it is necessary to provide an outdoor gardening operation vehicle to overcome the defects of the prior art. [Summary of the invention]

[0008] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an outdoor gardening vehicle in which the user can continue to step on the brake pedal after the friction plate moves to completely abut against the brake disc so that the user's foot feel is not too hard.

[0009] The technical solution adopted by the present invention to solve the existing technical problems is: The technical solution adopted by the present invention to solve the existing technical problems is: an outdoor gardening work vehicle, comprising: a frame;

[0010] A left drive axle assembly and a right drive axle assembly, wherein the left drive axle assembly is mechanically connected to the left drive motor and the left drive wheel to transmit the power of the left drive motor to the left drive wheel; the right drive axle assembly is mechanically connected to the right drive motor and the right drive wheel to transmit the power of the right drive motor to the right drive wheel;

[0011] A mowing component is provided at the lower portion of the frame and is used to produce a cutting effect on the vegetation on the ground;

[0012] a power supply component electrically connected to the left drive motor, the right drive motor and the mowing component, and configured to supply power to the left drive motor, the right drive motor and the mowing component;

[0013] Braking module, including:

[0014] Brake parking assembly, foot brake pump; the brake parking assembly includes a pedal assembly, which is hinged to the frame and forms a lever with the foot brake pump. When the user steps on the pedal assembly, the foot brake pump is triggered to generate braking force on the left drive axle assembly and the right drive axle assembly.

[0015] A further improvement is that the pedal assembly and the foot brake pump form a force-saving lever, and when the user steps on the pedal assembly, the ratio of the input lever to the output lever is 1 to 20:1.

[0016] A further improvement is as follows: the brake module further comprises: a hydraulic pipe, a left brake assembly, and a right brake assembly;

[0017] The user steps on the pedal assembly to trigger the foot brake pump to generate brake pressure, which acts on the left brake assembly and the right brake assembly through the hydraulic pipe at the same time, generating braking force on the left drive axle assembly and the right drive axle assembly, so that the left drive wheel and the right drive wheel are braked;

[0018] The pedaling force applied by the user to brake by stepping on the pedal assembly is 20N to 500N.

[0019] A further improvement is that the user's pedaling force when stepping on the pedal assembly to brake is 30N to 200N.

[0020] A further improvement is that: the left drive axle assembly and the right drive axle assembly use a 2-stage or higher reduction gearbox, and the reduction gearbox includes an input shaft, an output shaft and an intermediate shaft;

[0021] The left brake assembly and the right brake assembly are respectively arranged on the non-output shafts of the corresponding reduction gearboxes.

[0022] A further improvement is that the left brake assembly and the right brake assembly are respectively arranged on the intermediate shafts of the corresponding reduction gearboxes.

[0023] A further improvement plan is: the left brake assembly and the right brake assembly both include a brake cylinder installed on the corresponding drive axle assembly, and a brake disc is fixedly connected to the shaft of the left brake assembly or the right brake assembly; when the user steps on the pedal assembly, the brake cylinder squeezes the brake disc to generate braking force.

[0024] A further improvement is as follows: the brake wheel cylinder includes a wheel cylinder hydraulic cylinder, a wheel cylinder rod, and a friction plate. When the foot brake pump is connected to the wheel cylinder hydraulic cylinder through a hydraulic pipe and provides braking pressure, the wheel cylinder rod causes the friction plate to squeeze the brake disc to form braking force.

[0025] A further improvement scheme is: the number of cylinders of the brake wheel cylinder is odd, the wheel cylinder hydraulic cylinder is slidably installed on the vehicle frame or the corresponding reduction gear box, the friction plate includes a dynamic friction plate and a static friction plate, the dynamic friction plate is fixed to the wheel cylinder rod and is located on one side of the brake disc, and the static friction plate is arranged on the other side of the brake disc. When the foot brake pump provides braking pressure to the wheel cylinder hydraulic cylinder, the wheel cylinder rod pushes the dynamic friction plate and the static friction plate to press the brake disc.

[0026] A further improvement plan is: the number of cylinders of the brake slave cylinder is an even number, the slave cylinder hydraulic cylinder is slidably installed on the vehicle frame or the corresponding reduction gear box, the two friction plates are fixed to the slave cylinder rod and are located on both sides of the brake disc, and when the foot brake pump provides braking pressure to the slave cylinder hydraulic cylinder, the slave cylinder rod pushes the two moving friction plates to press the brake disc.

[0027] A further improved solution is: a floating mounting bracket is fixed on the vehicle frame or the corresponding reduction gear box, and the slave pump hydraulic cylinder is slidably connected to the floating mounting bracket.

[0028] A further improvement is as follows: the thickness of the brake disc is 2mm to 6mm, and the diameter of the brake disc is 60mm to 300mm.

[0029] A further improvement is as follows: the hydraulic pressure range of the brake cylinder is 2Mpa to 40Mpa, and the piston stroke of the brake cylinder rod is 0.5mm to 20mm.

[0030] A further improvement is as follows: the diameter of the cylinder rod of the foot brake pump is 5mm to 30mm, the diameter of the hydraulic cylinder of the slave pump is 5mm to 40mm, and the stroke of the cylinder rod of the foot brake pump is 5mm to 100mm.

[0031] A further improvement is to set the reduction ratio between the intermediate shaft of the left brake assembly or the right brake assembly and the corresponding output shaft to 1 to 50.

[0032] A further improvement is that the left drive axle assembly and the right drive axle assembly use a two-stage reduction gearbox, and the reduction ratio between the intermediate shaft of the left brake assembly or the right brake assembly and the corresponding output shaft is set to 3 to 6.

[0033] A further improvement plan is: the brake parking assembly also includes a rotating plate and a brake spring. The rotating plate is rotatably connected to the frame, the pedal assembly is fixedly connected to the rotating plate, the two ends of the brake spring are respectively connected to the frame and the rotating plate, and a threaded push rod is connected to the rotating plate. When the user steps on the pedal assembly, the rotating plate rotates and pulls the brake spring, pushing the threaded push rod to squeeze the foot brake pump and generate braking force.

[0034] A further improvement is that: the brake spring is a brake torsion spring, and when the user steps on the pedal assembly to rotate the rotating plate, one end of the brake torsion spring rotates synchronously therewith.

[0035] A further improvement is that: the brake spring is a brake compression spring, and when the user steps on the pedal assembly, the rotating plate rotates and compresses the brake compression spring.

[0036] A further improvement is that: the brake spring is a brake tension spring, and when the user steps on the pedal assembly, the rotating plate rotates and stretches the brake tension spring.

[0037] A further improved solution is: the brake parking assembly also includes a fixed bracket fixedly connected to the vehicle frame, the rotating plate is rotatably connected to the fixed bracket, and both ends of the brake tension spring are respectively connected to the fixed bracket and the rotating plate.

[0038] A further improved solution is as follows: the pedal assembly includes a main pedal, an auxiliary pedal, a hook plate, and a hook plate torsion spring; the frame is fixedly connected to a limit rod; the hook plate is rotatably connected to the main pedal; when the main pedal is stepped on by a user, the hook plate can be hooked to the limit rod, thereby placing the brake module in a parking state; the hook plate torsion spring is arranged on the rotation axis of the hook plate, and is used to generate elastic force on the hook plate so that it remains hooked to the limit rod in the parking state;

[0039] The auxiliary pedal is movably connected to the main pedal, and the hook plate can be separated from the limiting rod when the user steps on the auxiliary pedal.

[0040] A further improvement is that the hook plate torsion spring maintains the contact force between the hook plate and the limiting rod at 5N to 30N.

[0041] A further improvement is that the hook plate torsion spring maintains a force of 7N to maintain contact between the hook plate and the limiting rod.

[0042] A further improvement is that the main pedal and the auxiliary pedal can be stepped on simultaneously or separately by a single foot.

[0043] A further improvement is that when the main pedal is stepped on by the user, at least one of the two surfaces of the hook plate and the limit rod that first come into contact is a curved surface, and the user steps on the main pedal to make the hook plate and the limit rod bear against each other, so that the hook plate can rotate until the inner side of the hook plate bypasses the limit rod and is hooked on the limit rod.

[0044] A further improvement is that when the user steps on the auxiliary pedal, the auxiliary pedal moves and squeezes the hook plate, causing the hook plate to rotate away from the limiting rod and disengage from the limiting rod.

[0045] A further improvement is that the user steps on the auxiliary pedal to drive the hook plate to move from the state of hooking the limit rod to the state of being separated from the limit rod, and the maximum rotation angle of the hook plate is 5° to 30°.

[0046] A further improvement is that the auxiliary pedal is rotatably connected to the main pedal, and the user steps on the auxiliary pedal to rotate it to an angle range of 0 to 90 degrees.

[0047] A further improvement is that a secondary pedal torsion spring is provided at the hinge between the secondary pedal and the main pedal, and the secondary pedal torsion spring enables the secondary pedal to maintain a state of not squeezing the hook plate when not being stepped on.

[0048] A further improvement is that the user steps on the auxiliary pedal to separate the hook plate from the limiting rod with a stepping force of 3N to 100N.

[0049] A further improvement is that the outdoor gardening vehicle further includes an identification module, a control system and a reminder module;

[0050] The recognition module is used to detect whether the main pedal is stepped on;

[0051] The control system includes a whole machine control module, a motor control module and a battery management module, wherein the whole machine control module, the motor control module and the battery management module are connected to each other by signals, the battery management module is connected to the power supply component by signals, and the motor control module is connected to the left drive motor and the right drive motor by signals;

[0052] When the recognition module detects that the main pedal is stepped on, the control system controls the left drive motor and the right drive motor to stop rotating, and issues a braking status reminder to the user through the reminder module.

[0053] A further improvement scheme is: the identification module includes a micro switch arranged on the frame, and a switch pressure plate is fixed on the rotating plate. The switch pressure plate presses the micro switch when the main pedal is naturally released; when the user steps on the main pedal to drive the rotating plate to rotate, the switch pressure plate disengages from the micro switch, and at this time the micro switch triggers the control of the left drive motor and the right drive motor to stop rotating.

[0054] A further improved solution is: a switch box is fixedly provided on the fixing bracket, and the micro switch and the switch pressure plate are both installed in the switch box.

[0055] A further improvement is that an oil brake force damping adjustment mechanism is provided at the foot brake pump, so that the pedal assembly can continue to be stepped on and move when the hydraulic oil in the foot brake pump is compressed to the limit.

[0056] A further improved solution is: the oil brake force damping adjustment mechanism includes an oil pump bracket and a damping member, the oil pump bracket is fixed to the vehicle frame, and the damping member is connected to the foot brake pump and the oil pump bracket.

[0057] A further improvement is that the oil brake force damping adjustment mechanism also includes a guide member connected to the foot brake pump, and the guide member is used to limit the foot brake pump to reciprocating movement only in the direction squeezed by the pedal assembly.

[0058] A further improvement is as follows: the damping member is a damping compression spring, the guide member is a bolt, the bolt passes through the foot brake pump and the damping compression spring in sequence and is threadedly connected to the oil pump bracket.

[0059] A further improvement is that the damping member has an initial damping force after assembly.

[0060] A further improvement is that the damping compression spring is in state 1 when the main pedal is in a naturally released state, and the damping compression spring is in state 2 when the hook plate is hooked on the limit rod, and the compression amount of the damping compression spring in state 2 is greater than the compression amount in state 1.

[0061] A further improvement is that the difference between the compression amount of the damping spring in state 2 and state 1 is 1 mm to 60 mm.

[0062] This specification also discloses a lawn mower, comprising:

[0063] Frame;

[0064] A left drive axle assembly and a right drive axle assembly, wherein the left drive axle assembly is mechanically connected to the left drive motor and the left drive wheel to transmit the power of the left drive motor to the left drive wheel; the right drive axle assembly is mechanically connected to the right drive motor and the right drive wheel to transmit the power of the right drive motor to the right drive wheel;

[0065] A mowing component is provided at the lower portion of the frame and is used to produce a cutting effect on the vegetation on the ground;

[0066] a power supply component electrically connected to the left drive motor, the right drive motor and the mowing component, and configured to supply power to the left drive motor, the right drive motor and the mowing component;

[0067] Braking module, including:

[0068] Brake parking assembly, foot brake pump; the brake parking assembly includes a pedal assembly, which is hinged to the frame and forms a lever with the foot brake pump. When the user steps on the pedal assembly, the foot brake pump is triggered to generate braking force on the left drive axle assembly and the right drive axle assembly.

[0069] This specification also discloses an electric outdoor gardening vehicle, comprising:

[0070] Frame;

[0071] A left drive axle assembly and a right drive axle assembly, wherein the left drive axle assembly is mechanically connected to the left drive motor and the left drive wheel to transmit the power of the left drive motor to the left drive wheel; the right drive axle assembly is mechanically connected to the right drive motor and the right drive wheel to transmit the power of the right drive motor to the right drive wheel;

[0072] An operating component, provided at the lower portion of the frame and used for performing outdoor operations on the ground;

[0073] a power supply component, electrically connected to the left drive motor, the right drive motor and the working component, for supplying power to the left drive motor, the right drive motor and the working component;

[0074] Braking module, including:

[0075] Brake parking assembly, foot brake pump; the brake parking assembly includes a pedal assembly, which is hinged to the frame and forms a lever with the foot brake pump. When the user steps on the pedal assembly, the foot brake pump is triggered to generate braking force on the left drive axle assembly and the right drive axle assembly.

[0076] This specification also discloses another outdoor gardening vehicle, comprising:

[0077] Frame;

[0078] A left drive axle assembly and a right drive axle assembly, wherein the left drive axle assembly is mechanically connected to the left drive motor and the left drive wheel to transmit the power of the left drive motor to the left drive wheel; the right drive axle assembly is mechanically connected to the right drive motor and the right drive wheel to transmit the power of the right drive motor to the right drive wheel;

[0079] A mowing component is provided at the lower portion of the frame and is used to produce a cutting effect on the vegetation on the ground;

[0080] a power supply component electrically connected to the left drive motor, the right drive motor and the mowing component, and configured to supply power to the left drive motor, the right drive motor and the mowing component;

[0081] The brake module includes a brake parking assembly; when the user steps on the brake parking assembly, a braking force is generated on the left drive axle assembly and the right drive axle assembly;

[0082] The brake parking assembly includes a pedal assembly, which includes a main pedal and a sub-pedal. When a user steps on the main pedal, the brake module enters a braking state and a parking state, and when a user steps on the sub-pedal, the brake module releases the parking state.

[0083] A further improvement is that the main pedal and the auxiliary pedal can be stepped on simultaneously or separately by a single foot.

[0084] A further improvement plan is: the braking module also includes a foot brake pump, the brake parking assembly also includes a rotating plate and a brake tension spring, the rotating plate is rotatably connected to the frame, the pedal assembly is fixedly connected to the rotating plate, the two ends of the brake tension spring are respectively connected to the frame and the rotating plate, and a threaded push rod is connected to the rotating plate. When the user steps on the pedal assembly, the rotating plate rotates and stretches the brake tension spring, pushing the threaded push rod to squeeze the foot brake pump and generate braking force.

[0085] A further improvement is that: the brake spring is a brake tension spring, and when the user steps on the pedal assembly, the rotating plate rotates and stretches the brake tension spring.

[0086] A further improvement plan is: the braking module also includes: a hydraulic pipe, a left brake assembly, and a right brake assembly; when the user steps on the brake parking assembly, the foot brake pump generates braking pressure and acts on the left brake assembly and the right brake assembly at the same time through the hydraulic pipe, generating braking force on the left drive axle assembly and the right drive axle assembly, so that the left drive wheel and the right drive wheel are braked.

[0087] A further improved solution is as follows: the footrest assembly further includes a hook plate and a hook plate torsion spring, the frame being fixedly connected to a limit rod; the hook plate being rotatably connected to the main pedal, the main pedal being stepped on by a user to cause the hook plate to hook onto the limit rod, thereby placing the brake module in a parking state; the hook plate torsion spring being disposed on a rotating shaft of the hook plate, for generating an elastic force on the hook plate to keep it hooked onto the limit rod in the parking state;

[0088] The auxiliary pedal is rotatably connected to the main pedal, and the hook plate can be separated from the limiting rod when the user steps on the auxiliary pedal.

[0089] A further improvement is that the hook plate torsion spring maintains the contact force between the hook plate and the limiting rod at 5N to 30N.

[0090] A further improvement plan is: when the main pedal is stepped on by the user, at least one of the two surfaces of the hook plate and the limit rod that first come into contact is a curved surface, and the user steps on the main pedal to make the hook plate and the limit rod bear against each other, so that the hook plate can rotate until the inner side of the hook plate bypasses the cylindrical surface of the limit rod and is hooked on the limit rod.

[0091] A further improvement is that when the auxiliary pedal is stepped on by the user, it rotates and squeezes the hook plate, causing the hook plate to rotate in a direction away from the limit rod and disengage from the limit rod.

[0092] A further improvement is that the user steps on the auxiliary pedal to drive the hook plate to move from the state of being hooked with the limit rod to the state of being disengaged from the limit rod, and the maximum rotation angle of the hook plate is 10° to 30°.

[0093] A further improvement is that the user steps on the auxiliary pedal to rotate it within an angle range of 0 to 90 degrees.

[0094] A further improvement is that a secondary pedal torsion spring is provided at the hinge between the secondary pedal and the main pedal, and the secondary pedal torsion spring enables the secondary pedal to maintain a state of not squeezing the hook plate when not being stepped on.

[0095] A further improvement is that the user steps on the auxiliary pedal to separate the hook plate from the limiting rod with a stepping force of 3N to 100N.

[0096] A further improvement plan is: the pedal assembly and the foot brake pump form a force-saving lever; when the user steps on the pedal assembly, the ratio of the input lever to the output lever is 1 to 20:1, and the user steps on the brake parking assembly to achieve braking with a pedal force of 20N to 400N.

[0097] A further improvement is that the user's pedaling force when stepping on the pedal assembly to brake is 30N to 200N.

[0098] A further improvement is that: the left drive axle assembly and the right drive axle assembly use a 2-stage or higher reduction gearbox, and the reduction gearbox includes an input shaft, an output shaft and a plurality of intermediate shafts;

[0099] The left brake assembly and the right brake assembly are respectively arranged on the non-output shafts of the corresponding reduction gearboxes.

[0100] A further improvement is that the left brake assembly and the right brake assembly are respectively arranged on the intermediate shafts of the corresponding reduction gearboxes.

[0101] A further improvement plan is: the left brake assembly and the right brake assembly both include a brake cylinder installed on the corresponding drive axle assembly, and a brake disc is fixedly connected to the shaft of the left brake assembly or the right brake assembly; when the user steps on the brake parking assembly, the brake cylinder squeezes the brake disc to generate braking force.

[0102] A further improvement is as follows: the brake wheel cylinder includes a wheel cylinder hydraulic cylinder, a wheel cylinder rod, and a friction plate. When the foot brake pump is connected to the wheel cylinder hydraulic cylinder through a hydraulic pipe and provides braking pressure, the wheel cylinder rod causes the friction plate to squeeze the brake disc to form braking force.

[0103] A further improvement is as follows: the number of cylinders of the brake wheel cylinder is odd, the wheel cylinder hydraulic cylinder is slidably mounted on the vehicle frame or the corresponding gear reduction box, the friction plate includes a dynamic friction plate and a static friction plate, the dynamic friction plate is fixed to the wheel cylinder rod and is located on one side of the brake disc, and the static friction plate is arranged on the other side of the brake disc, and when the foot brake pump provides braking pressure to the wheel cylinder hydraulic cylinder, the wheel cylinder rod pushes the dynamic friction plate and the static friction plate to press the brake disc.

[0104] A further improvement plan is: the number of cylinders of the brake slave cylinder is an even number, the slave cylinder hydraulic cylinder is slidably installed on the vehicle frame or the corresponding gear reduction box, the two friction plates are fixed to the slave cylinder rod and are located on both sides of the brake disc, and when the foot brake pump provides braking pressure to the slave cylinder hydraulic cylinder, the slave cylinder rod pushes the two moving friction plates to press the brake disc.

[0105] A further improved solution is: a floating mounting bracket is fixed on the vehicle frame or the corresponding gear reduction box, and the slave pump hydraulic cylinder is slidably connected to the floating mounting bracket.

[0106] A further improvement is as follows: the thickness of the brake disc is 2mm to 6mm, and the diameter of the brake disc is 60mm to 300mm.

[0107] A further improvement is as follows: the hydraulic pressure range of the brake cylinder is 2 MPa to 20 MPa, and the piston stroke of the brake cylinder rod is 0.5 to 10 mm.

[0108] A further improvement is as follows: the diameter of the cylinder rod of the foot brake pump is 10mm to 30mm, the diameter of the hydraulic cylinder of the slave pump is 20mm to 40mm, and the stroke of the cylinder rod of the foot brake pump is 5mm to 100mm.

[0109] A further improvement is to set the reduction ratio between the intermediate shaft of the left brake assembly or the right brake assembly and the corresponding output shaft to 1 to 50.

[0110] A further improvement is that the left drive axle assembly and the right drive axle assembly use a two-stage reduction gearbox, and the reduction ratio between the intermediate shaft of the left brake assembly or the right brake assembly and the corresponding output shaft is set to 3 to 6.

[0111] A further improvement is that the brake module further includes a micro switch for detecting whether the main pedal is stepped on. When the micro switch detects that the main pedal is stepped on, the left drive motor and the right drive motor are controlled to stop.

[0112] A further improvement scheme is: the micro switch is arranged on the frame, and a switch pressure plate is fixed on the rotating plate. The switch pressure plate presses the micro switch when the main pedal is naturally released; when the user steps on the main pedal to drive the rotating plate to rotate, the switch pressure plate disengages from the micro switch, and at this time the micro switch triggers the control of the left drive motor and the right drive motor to stop.

[0113] A further improved solution is: a switch box is fixedly provided on the fixing bracket, and the micro switch and the switch pressure plate are both installed in the switch box.

[0114] A further improvement is that an oil brake force damping adjustment mechanism is provided at the foot brake pump, so that the main pedal can continue to be stepped on and move when the hydraulic oil in the foot brake pump is compressed to the limit.

[0115] A further improvement is as follows: the oil brake force damping adjustment mechanism includes an oil pump bracket, a brake compression spring and a bolt, the oil pump bracket is fixed to the vehicle frame, and the bolt passes through the foot brake pump and the brake compression spring in sequence and is threadedly connected to the oil pump bracket.

[0116] A further improvement plan is: the brake compression spring is always in a compressed state, the brake compression spring is in state 1 when the main pedal is naturally released, and the brake compression spring is in state 2 when the hook plate is hooked on the limit rod. The compression amount of the brake compression spring in state 2 is greater than the compression amount in state 1.

[0117] A further improvement is that the difference between the compression amount of the brake spring in state 2 and state 1 is 1 mm to 60 mm.

[0118] A further improvement is as follows: an adjusting nut is provided between the threaded push rod and the rotating plate, the adjusting nut is rotatably connected to the rotating plate, the threaded push rod is threadedly connected to the adjusting nut, and the end of the threaded push rod away from the adjusting nut abuts against the foot brake pump.

[0119] This specification also discloses a riding lawn mower, comprising:

[0120] Frame;

[0121] a seat connected to the frame for a user to sit on;

[0122] A left drive axle assembly and a right drive axle assembly, wherein the left drive axle assembly is mechanically connected to the left drive motor and the left drive wheel to transmit the power of the left drive motor to the left drive wheel; the right drive axle assembly is mechanically connected to the right drive motor and the right drive wheel to transmit the power of the right drive motor to the right drive wheel;

[0123] A mowing component is provided at the lower portion of the frame and is used to produce a cutting effect on the vegetation on the ground;

[0124] a power supply component electrically connected to the left drive motor, the right drive motor and the mowing component, and configured to supply power to the left drive motor, the right drive motor and the mowing component;

[0125] The brake module includes a brake parking assembly; when the user steps on the brake parking assembly, a braking force is generated on the left drive axle assembly and the right drive axle assembly;

[0126] The brake parking assembly includes a pedal assembly, which includes a main pedal and a sub-pedal. When a user steps on the main pedal, the brake module enters a braking state and a parking state, and when a user steps on the sub-pedal, the brake module releases the parking state.

[0127] This specification also discloses a lawn mower, comprising:

[0128] Frame;

[0129] A left drive axle assembly and a right drive axle assembly, wherein the left drive axle assembly is mechanically connected to the left drive motor and the left drive wheel to transmit the power of the left drive motor to the left drive wheel; the right drive axle assembly is mechanically connected to the right drive motor and the right drive wheel to transmit the power of the right drive motor to the right drive wheel;

[0130] An operating component is provided at the lower portion of the vehicle frame and is used for performing outdoor operations on the ground;

[0131] a power supply component, electrically connected to the left drive motor, the right drive motor and the working component, for supplying power to the left drive motor, the right drive motor and the working component;

[0132] The brake module includes a brake parking assembly; when the user steps on the brake parking assembly, a braking force is generated on the left drive axle assembly and the right drive axle assembly;

[0133] The brake parking assembly includes a pedal assembly, which includes a main pedal and a sub-pedal. When a user steps on the main pedal, the brake module enters a braking state and a parking state, and when a user steps on the sub-pedal, the brake module releases the parking state.

[0134] This specification also discloses an electric outdoor gardening vehicle, comprising:

[0135] Frame;

[0136] A left drive axle assembly and a right drive axle assembly, wherein the left drive axle assembly is mechanically connected to the left drive motor and the left drive wheel to transmit the power of the left drive motor to the left drive wheel; the right drive axle assembly is mechanically connected to the right drive motor and the right drive wheel to transmit the power of the right drive motor to the right drive wheel;

[0137] An operating component, provided at the lower portion of the frame and used for performing outdoor operations on the ground;

[0138] a power supply component, electrically connected to the left drive motor, the right drive motor and the working component, for supplying power to the left drive motor, the right drive motor and the working component;

[0139] Brake module, including brake parking assembly and foot brake pump;

[0140] The brake parking assembly includes a pedal assembly. When stepped on by a user, the pedal assembly squeezes the foot brake pump and generates braking force on the left drive axle assembly and the right drive axle assembly.

[0141] A further improvement is that an oil brake force damping adjustment mechanism is provided at the foot brake pump, so that the pedal assembly can continue to be stepped on and move when the hydraulic oil in the foot brake pump is compressed to the limit.

[0142] A further improved solution is: the oil brake force damping adjustment mechanism includes an oil pump bracket and a damping member, the oil pump bracket is fixed to the vehicle frame, and the damping member is connected to the foot brake pump and the oil pump bracket.

[0143] A further improvement is that the oil brake force damping adjustment mechanism also includes a guide member connected to the foot brake pump, and the guide member is used to limit the foot brake pump to reciprocating movement only in the direction squeezed by the pedal assembly.

[0144] A further improvement is as follows: the damping member is a damping compression spring, the guide member is a bolt, the bolt passes through the foot brake pump and the damping compression spring in sequence and is threadedly connected to the oil pump bracket.

[0145] A further improvement is that the damping member has an initial damping force after assembly.

[0146] A further improvement scheme is: a limit rod is fixedly connected to the frame, and the pedal assembly includes a main pedal, a hook plate and a hook plate torsion spring. The hook plate is rotatably connected to the main pedal. When the main pedal is stepped on by the user, the hook plate can be hooked on the limit rod to put the brake module in a parking state. The hook plate torsion spring is set on the rotating shaft of the hook plate, and is used to generate elastic force on the hook plate so that it remains hooked on the limit rod in the parking state.

[0147] A further improvement is that when the main pedal is stepped on by the user, at least one of the two surfaces of the hook plate and the limit rod that first come into contact is a curved surface, and the user steps on the main pedal to make the hook plate and the limit rod bear against each other, so that the hook plate can rotate until the inner side of the hook plate bypasses the limit rod and is hooked on the limit rod.

[0148] A further improvement is that the hook plate torsion spring maintains the contact force between the hook plate and the limiting rod at 5N to 30N.

[0149] A further improvement is that the hook plate torsion spring maintains a force of 7N to maintain contact between the hook plate and the limiting rod.

[0150] A further improvement is that the damping compression spring is in state 1 when the main pedal is naturally released, and the damping compression spring is in state 2 when the hook plate is hooked on the limit rod, and the compression amount of the brake compression spring in state 2 is greater than the compression amount in state 1.

[0151] A further improvement plan is: when the main pedal is in a naturally released state, the damping compression spring is in state 1; when the hook plate is hooked on the limit rod, the damping compression spring is in state 2; the compression amount of the brake compression spring in state 2 is greater than the compression amount in state 1; the difference between the compression amount of the damping compression spring in state 2 and state 1 is 1mm to 60mm.

[0152] A further improvement is that the foot pedal assembly further includes an auxiliary pedal, and the user can release the brake module from the parking state by stepping on the auxiliary pedal.

[0153] A further improvement is that the main pedal and the auxiliary pedal can be stepped on simultaneously or separately by a single foot.

[0154] A further improvement is that the auxiliary pedal is movably connected to the main pedal, and when stepped on by the user, the auxiliary pedal moves and squeezes the hook plate, causing the hook plate to rotate away from the limit rod and disengage from the limit rod.

[0155] A further improvement is that the user steps on the auxiliary pedal to drive the hook plate to move from the state of hooking the limit rod to the state of being separated from the limit rod, and the maximum rotation angle of the hook plate is 5° to 30°.

[0156] A further improvement is that the auxiliary pedal is rotatably connected to the main pedal, and the user steps on the auxiliary pedal to rotate it to an angle range of 0 to 90 degrees.

[0157] A further improvement is that a secondary pedal torsion spring is provided at the hinge between the secondary pedal and the main pedal, and the secondary pedal torsion spring enables the secondary pedal to maintain a state of not squeezing the hook plate when not being stepped on.

[0158] A further improvement plan is: the brake parking assembly also includes a rotating plate and a brake spring. The rotating plate is rotatably connected to the frame, the pedal assembly is fixedly connected to the rotating plate, the two ends of the brake spring are respectively connected to the frame and the rotating plate, and a threaded push rod is connected to the rotating plate. When the user steps on the pedal assembly, the rotating plate rotates and pulls the brake spring, pushing the threaded push rod to squeeze the foot brake pump and generate braking force.

[0159] A further improvement is that the outdoor gardening vehicle further includes an identification module, a control system and a reminder module;

[0160] The recognition module is used to detect whether the main pedal is stepped on;

[0161] The control system includes a whole machine control module, a motor control module and a battery management module, wherein the whole machine control module, the motor control module and the battery management module are connected to each other by signals, the battery management module is connected to the power supply component by signals, and the motor control module is connected to the left drive motor and the right drive motor by signals;

[0162] When the recognition module detects that the main pedal is stepped on, the control system controls the left drive motor and the right drive motor to stop rotating, and issues a braking status reminder to the user through the reminder module.

[0163] A further improvement scheme is: the identification module includes a micro switch arranged on the frame, and a switch pressure plate is fixed on the rotating plate. The switch pressure plate presses the micro switch when the main pedal is naturally released; when the user steps on the main pedal to drive the rotating plate to rotate, the switch pressure plate disengages from the micro switch, and at this time the micro switch triggers the control of the left drive motor and the right drive motor to stop rotating.

[0164] This specification also discloses a riding outdoor gardening vehicle, comprising:

[0165] Frame;

[0166] a seat connected to the frame for a user to sit on;

[0167] A left drive axle assembly and a right drive axle assembly, wherein the left drive axle assembly is mechanically connected to the left drive motor and the left drive wheel to transmit the power of the left drive motor to the left drive wheel; the right drive axle assembly is mechanically connected to the right drive motor and the right drive wheel to transmit the power of the right drive motor to the right drive wheel;

[0168] An operating component, provided at the lower portion of the frame and used for performing outdoor operations on the ground;

[0169] a power supply component, electrically connected to the left drive motor, the right drive motor and the working component, for supplying power to the left drive motor, the right drive motor and the working component;

[0170] The brake module includes a brake parking assembly; when the user steps on the brake parking assembly, a braking force is generated on the left drive axle assembly and the right drive axle assembly;

[0171] The brake parking assembly includes a pedal assembly, which includes a main pedal and a sub-pedal. When a user steps on the main pedal, the brake module enters a braking state and a parking state, and when a user steps on the sub-pedal, the brake module releases the parking state.

[0172] This specification also discloses a zero-turn lawn mower, comprising:

[0173] Frame;

[0174] A drive axle assembly, comprising a left drive axle assembly and a right drive axle assembly, wherein the left drive axle assembly and the right drive axle assembly are respectively mechanically connected to the drive motor and the drive wheel on the corresponding side to transmit the power of the drive motor to the drive wheel;

[0175] A mowing component is provided at the lower portion of the frame and is used to produce a cutting effect on the vegetation on the ground;

[0176] a power supply component, electrically connected to the drive motor and the mowing component, for supplying power to the drive motor and the mowing component;

[0177] The drive axle assembly includes a housing and a plurality of shafts;

[0178] At least one of the shafts is connected to a neutral mechanism, which can be controlled to place the drive axle assembly in a neutral state or a geared state. When the drive axle assembly is in the geared state, the drive axle assembly outputs power from the drive motor to the drive wheels. When the drive axle assembly is in the neutral state, the drive axle assembly does not output power from the drive motor to the drive wheels.

[0179] The plurality of shafts include:

[0180] an input shaft, mechanically connected to the drive motor, the drive motor driving the input shaft to rotate;

[0181] The output shaft is connected to the input shaft and the driving wheel, and is used to output the power of the driving motor to the driving wheel.

[0182] A further improvement is that the zero-turn lawn mower further includes an identification module, a control system and a reminder module;

[0183] The identification module is used to identify whether the drive axle assembly is in a neutral state;

[0184] The control system includes a whole machine control module, a motor control module and a battery management module, wherein the whole machine control module, the motor control module and the battery management module are connected to each other by signals, the battery management module is connected to the power supply component by signals, and the motor control module is connected to the drive motor by signals;

[0185] When the recognition module detects that the drive axle assembly is in a neutral state, the recognition module issues a neutral reminder to the user through the reminder module.

[0186] A further improved solution is: the neutral gear mechanism includes an operating portion and an action portion that are connected to each other, and the action portion can put the drive axle assembly into a neutral state or a gear-engaging state under the action of the operating portion.

[0187] A further improvement is as follows: a movable gear capable of transmitting torque and sliding relative to the shaft is provided on the shaft on which the neutral mechanism is provided, and a fixed gear is provided on the shaft adjacent to the shaft on which the neutral mechanism is provided. The operating part can be controlled to drive the movable gear to slide along the shaft so that the movable gear engages or disengages with the fixed gear. When the movable gear engages with the fixed gear, the drive axle assembly is in a gear-engaging state, and when the movable gear disengages from the fixed gear, the drive axle assembly is in a neutral state.

[0188] A further improvement is that the movable gear is key-connected to the corresponding shaft.

[0189] A further improvement is that the inner ring of the movable gear is provided with an internal spline, and the shaft body to which the movable gear is slidably connected is provided with an external spline that cooperates with the internal spline. The sliding of the movable gear along the external spline enables the drive axle assembly to switch between the engaged state and the neutral state.

[0190] A further improved solution is that the action portion includes a neutral shifting member, and when the neutral shifting member slides along the corresponding shaft, the driving gear slides to change the drive axle assembly to a gear-engaging state or a neutral state.

[0191] A further improved solution is: a circle of toggle grooves is provided on the movable gear, and one end of the neutral toggle member is clamped in the toggle groove.

[0192] A further improved solution is: the neutral shift fork is connected to a sliding rod, and the sliding rod is slidably connected to the housing.

[0193] A further improved solution is: the operating part includes a sliding rod, the sliding rod passes through the side wall of the shell and is connected to a pull rod located outside the shell, and the pull rod is provided with a handle for manual grip.

[0194] A further improved solution is that the handle is located in the area inside the outer end surface of the shell in the horizontal direction, and the handle is located in the area below the center plane of the shell in the vertical direction.

[0195] A further improvement is that a spring is sleeved on the sliding rod, and the two ends of the spring are respectively connected to the housing and the sliding rod. The spring generates elastic force on the sliding rod so that it tends to move to the drive axle assembly in a neutral or gear state.

[0196] A further improvement is as follows: a limit plate connected to the handle is fixedly connected to the outside of the housing, and the limit plate is used to limit the handle so that the drive axle assembly is in a neutral or gear state.

[0197] A further improvement is that the limit plate has two limit slots, and when the handle is clamped in one of the limit slots, the drive axle assembly is in a neutral state, and when the handle is clamped in the other limit slot, the drive axle assembly is in a gear state.

[0198] A further improvement scheme is: the limit plate is provided with a slide connecting the two limit slots, and the handle can move along the slide from one of the limit slots to the other limit slot; the limit plate is provided with an anti-slip component to prevent the handle from detaching from the limit slot due to vibration, and the anti-slip component includes a limit protrusion arranged on the side wall of the limit slot, and the handle cannot slide directly to the slide in the limit slot due to the combined action of the spring and the limit protrusion.

[0199] A further improvement is that the multiple shafts also include an intermediate shaft arranged between the input shaft and the output shaft, and the intermediate shaft can transmit the power of the input shaft to the output shaft; the movable gear is arranged on the input shaft, and the fixed gear is arranged on the intermediate shaft adjacent to the input shaft.

[0200] A further improvement is as follows: the operating part includes a handbrake and a handbrake cable, the handbrake cable is connected to the sliding rod, and controlling the handbrake to drive the handbrake cable to move can move the sliding rod and switch the drive axle assembly between neutral and gear states.

[0201] A further improvement is as follows: the operating part includes a control switch and an electric push rod, the electric push rod is connected to the sliding rod, and the control switch is operated to make the electric push rod work to drive the sliding rod to move, and the drive axle assembly switches between neutral and gear states.

[0202] A further improvement scheme is: the operating part includes a control switch, the action part includes an electromagnetic clutch, the shaft body of the electromagnetic clutch is divided into a coaxial front shaft body and a rear shaft body, the electromagnetic clutch includes two synchronizers, and the two synchronizers are respectively arranged on the front shaft body and the rear shaft body. The control switch can control the two synchronizers to offset or separate. The front shaft body and the rear shaft body transmit power when the two synchronizers offset each other, and the drive axle assembly is in a gear state at this time; the front shaft body and the rear shaft body disconnect power transmission when the two synchronizers are separated, and the drive axle assembly is in a neutral state at this time.

[0203] This specification also discloses an outdoor gardening vehicle, comprising:

[0204] Frame;

[0205] A drive axle assembly, comprising a left drive axle assembly and a right drive axle assembly, wherein the left drive axle assembly and the right drive axle assembly are respectively mechanically connected to the drive motor and the drive wheel on the corresponding side to transmit the power of the drive motor to the drive wheel;

[0206] An operating component is provided at the lower portion of the vehicle frame and is used for performing outdoor operations on the ground;

[0207] a power supply component, electrically connected to the drive motor and the working component, for supplying power to the drive motor and the working component;

[0208] The drive axle assembly includes a housing and a plurality of shafts;

[0209] At least one of the shafts is connected to a neutral mechanism, which can be controlled to place the drive axle assembly in a neutral state or a geared state. When the drive axle assembly is in the geared state, the drive axle assembly outputs power from the drive motor to the drive wheels. When the drive axle assembly is in the neutral state, the drive axle assembly does not output power from the drive motor to the drive wheels.

[0210] The plurality of shafts include:

[0211] an input shaft, mechanically connected to the drive motor, the drive motor driving the input shaft to rotate;

[0212] The output shaft is connected to the input shaft and the driving wheel, and is used to output the power of the driving motor to the driving wheel.

[0213] This specification also discloses a riding gardening vehicle, comprising:

[0214] Frame;

[0215] a seat connected to the frame for a user to sit on;

[0216] A drive axle assembly, comprising a left drive axle assembly and a right drive axle assembly, wherein the left drive axle assembly and the right drive axle assembly are respectively mechanically connected to the drive motor and the drive wheel on the corresponding side to transmit the power of the drive motor to the drive wheel;

[0217] An operating component is provided at the lower portion of the vehicle frame and is used for performing outdoor operations on the ground;

[0218] a power supply component, electrically connected to the drive motor and the working component, for supplying power to the drive motor and the working component;

[0219] The drive axle assembly includes a housing and a plurality of shafts;

[0220] At least one of the shafts is connected to a neutral mechanism, which can be controlled to place the drive axle assembly in a neutral state or a geared state. When the drive axle assembly is in the geared state, the drive axle assembly outputs power from the drive motor to the drive wheels. When the drive axle assembly is in the neutral state, the drive axle assembly does not output power from the drive motor to the drive wheels.

[0221] The plurality of shafts include:

[0222] an input shaft, mechanically connected to the drive motor, the drive motor driving the input shaft to rotate;

[0223] The output shaft is connected to the input shaft and the driving wheel, and is used to output the power of the driving motor to the driving wheel.

[0224] Compared with the prior art, this specification has the following beneficial effects:

[0225] This manual solves the problem that in the prior art, a user needs to exert a lot of force to achieve effective braking by directly stepping on the pedal assembly without exerting too much force, by setting the connection between the pedal assembly and the foot brake pump as a force-saving lever and setting the brake disc on the non-output shaft of the reduction gearbox, and utilizing the reduction ratio of the reduction gearbox.

[0226] In this manual, braking can be achieved by stepping on the main pedal, and parking can be achieved by continuing to step on the main pedal with greater force. The switching between braking and parking modes is more in line with the user's usage habits. When the parking mode needs to be released, only the auxiliary pedal needs to be stepped on. The auxiliary pedal is integrated on one side of the main pedal, allowing the user to complete the braking, parking and releasing parking mode operations with one foot, and the overall operation is convenient.

[0227] In addition, this manual also uses an oil brake force damping adjustment mechanism to float the foot brake pump on the frame. When the user steps on the pedal assembly to make the friction plate of the brake assembly completely resist the brake disc, the pedal assembly can still be stepped down for a certain distance by the user, so that the user does not feel the feedback of "too hard" brakes during the entire pedaling process of the pedal assembly; and the damping member in the oil brake force damping adjustment mechanism has an initial damping force after assembly, which can make the pedal rebound force of the user gradually increase during the entire pedaling process of the pedal assembly, and there will be no interval with significantly increased rebound force, thereby improving the user's overall braking experience. [Brief Description of the Drawings]

[0228] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings:

[0229] FIG1 is a perspective view of an outdoor gardening vehicle according to a first embodiment of the present disclosure.

[0230] FIG2 is an exploded view of the brake module and drive axle in FIG1 .

[0231] FIG3 is a perspective view of the pedal assembly and the oil brake pump portion in FIG2 .

[0232] FIG4 is an exploded view of the pedal assembly and the oil brake pump in FIG2 .

[0233] FIG5 is an exploded view of the footrest assembly in FIG2 .

[0234] FIG6 is a perspective view of the brake cylinder in this specification.

[0235] FIG7 is a three-dimensional view of the brake cylinder and the friction plate separated in this specification.

[0236] FIG8 is a block diagram of the connection between the identification module and the control system in this specification.

[0237] FIG. 9 is a perspective view of a zero-turn mower according to one embodiment of the present disclosure.

[0238] FIG10 is an exploded view of the drive axle assembly portion in FIG9 .

[0239] FIG11 is a three-dimensional view of the limiting plate portion shown in FIG10 from one viewing angle.

[0240] FIG12 is a three-dimensional view of the limiting plate portion shown in FIG10 from another perspective.

[0241] FIG. 13 is an exploded view of the limiting plate portion shown in FIG. 10 .

[0242] FIG14 is a block diagram showing the connection between the identification module and the control system in this specification.

[0243] FIG. 15 is a schematic diagram of the handbrake and handbrake cable selected from the operating portion in this specification.

[0244] FIG16 is a schematic diagram of a control switch and an electric push rod selected for the operating portion in this specification.

[0245] FIG17 is a schematic diagram of an electromagnetic clutch used as an action portion in this specification.

[0246] The meanings of the reference numerals in Figures 1 to 8 are as follows: 1. frame; 2. user seat; 3. left drive wheel; 4. right drive wheel; 5. left drive axle assembly; 6. right drive axle assembly; 7. Mowing parts; 8. Brake module; 801. Main pedal; 802. Auxiliary pedal; 803. Auxiliary pedal torsion spring; 804. Hook plate; 805. Hook plate torsion spring; 806. Limit rod; 807. Rotating plate; 808. Brake spring; 809. Fixed bracket; 810. Hydraulic pipe; 811. Foot brake pump; 812. Threaded push rod; 813. Oil pump bracket; 814. Bolt; 815. Damping spring; 816. Connecting plate; 817. Adjusting nut; 818. Micro switch; 819. Switch pressure plate; 820. Switch box; 821. Three-way valve block; 822. Brake slave cylinder; 8221. Slave cylinder hydraulic cylinder; 8222. Friction plate; 8223. Slave cylinder rod; 823. Brake disc; 824. Floating mounting bracket.

[0247] The meanings of the reference numerals in Figures 9 to 17 are as follows: 1. driving motor; 2. moving gear; 3. input shaft; 4. intermediate shaft; 5. output shaft; 6. upper housing; 7. lower housing; 8. sliding rod; 9. neutral fork; 10. spring; 11. O-ring; 12. screw plug; 13. connecting plate; 14. pull rod; 15. handle; 16. limit plate; 161. slideway; 162. limit groove; 163. limit protrusion; 17. handbrake; 18. control switch; 19. electric push rod; 20. electromagnetic clutch; 21. synchronizer. [Specific implementation method]

[0248] The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this specification. For example, the terms "upper," "lower," "front," and "back" used below to indicate orientation or positional relationships are based solely on the orientation or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description. They do not indicate or imply that the device referred to must have a specific orientation or be constructed or operated in a specific orientation, and therefore should not be construed as limiting this specification.

[0249] Unless otherwise specified, the terms "disposed," "connected," and "connected" in this specification should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can be directly connected or indirectly connected through an intermediary. "Fixed connection" in this specification should also be broadly interpreted as integral molding, welding, or connection via other fasteners.

[0250] Please refer to Figures 1 to 8, which show an outdoor gardening vehicle according to one embodiment of the present specification, including: a vehicle frame 1, a left drive axle assembly 5, a right drive axle assembly 6, a mowing component 7, a power supply component, and a brake module.

[0251] The left drive axle assembly 5 is mechanically connected to the left drive motor and the left drive wheel 3, so as to transmit the power of the left drive motor to the left drive wheel 3; the right drive axle assembly 6 is mechanically connected to the right drive motor and the right drive wheel 4, so as to transmit the power of the right drive motor to the right drive wheel 4. The mowing component 7 is arranged at the lower part of the frame 1 to produce a cutting effect on the vegetation on the ground; specifically, the left and right drive wheels 4 are located at the rear of the mowing component 7. It should be specially noted that the mowing component 7 should not be narrowly understood as a mechanism that can only mow the grass. It can also be replaced with other functional components, such as snow sweeping, snow blowing and other components. Those skilled in the art should be able to adaptively replace various functional components without creative work, and the above should all be included in the protection scope of this embodiment.

[0252] The power supply component is electrically connected to the left drive motor, the right drive motor and the mowing component 7, and is used to supply power to the left drive motor, the right drive motor and the mowing component 7. The power supply component in this embodiment is a battery pack; in other embodiments, a combination of an internal combustion engine and a battery can also be selected. In this form, the internal combustion engine burns fuel to charge the battery through a generator, and the battery then supplies power to various components of the lawn mower.

[0253] Referring to Figure 2, the braking module of this embodiment includes a brake parking assembly and a foot brake pump 811; the brake parking assembly includes a pedal assembly, which is hinged to the frame 1 and forms a lever with the foot brake pump 811. When the user steps on the pedal assembly, the foot brake pump 811 is triggered to generate braking force on the left drive axle assembly 5 and the right drive axle assembly 6; in this embodiment, the pedal assembly and the foot brake pump 811 form a labor-saving lever. When the user steps on the pedal assembly, the ratio of the input lever arm to the output lever arm of the labor-saving lever is 1 to 20:1, which can make it relatively easier for the user to step on the pedal assembly.

[0254] Referring to Figure 2, the brake module also includes: a hydraulic pipe 810, a left brake assembly, and a right brake assembly. The hydraulic pipe 810 connects the foot brake pump 811, the left brake assembly and the right brake assembly. In order to effectively connect the above components, a three-way valve block 821 is generally provided; the user steps on the pedal assembly to trigger the foot brake pump 811 to generate braking pressure and simultaneously acts on the left brake assembly and the right brake assembly through the hydraulic pipe 810, generating braking force on the left drive axle assembly 5 and the right drive axle assembly 6, so that the left drive wheel 3 and the right drive wheel 4 are braked; the pedaling force of the user stepping on the pedal assembly to achieve braking is 20N to 500N.

[0255] Furthermore, the pedaling force applied by the user to brake the vehicle when stepping on the pedal assembly is 30 N to 200 N. That is, within the pedaling force range of 30 N to 200 N, different degrees of braking effects can be achieved.

[0256] The left and right drive axle assemblies 5 and 6 utilize a two-stage or higher reduction gearbox, which includes an input shaft, an output shaft, and an intermediate shaft. The left and right brake assemblies are each mounted on the non-output shaft of the corresponding reduction gearbox. In this embodiment, the braking force is derived from the user's pedaling. If the brake assembly were mounted on the output shaft (i.e., the drive axle), the braking would be too strong, requiring significant force to generate a sufficient braking force, making it difficult to achieve effective braking through the pedaling. Therefore, the brake assembly is generally not mounted on the output shaft.

[0257] In this embodiment, the left and right brake assemblies are respectively mounted on the intermediate shafts of the corresponding reduction gearboxes, creating a specific gear ratio relationship between the input shaft, intermediate shaft, and output shaft. In other embodiments, the brake assembly can be mounted on the input shaft, but this can result in overly sensitive braking. This means that even a slight step on the pedal assembly can generate significant braking force, resulting in a sudden stop. This makes it difficult for the user to accurately control the pedaling force when decelerating slowly.

[0258] Because the drive axle assembly may utilize a multi-stage reduction gearbox, the reduction ratio between the intermediate shaft of the left or right brake assembly and the corresponding output shaft is set within a range of 1 to 50. In this embodiment, the left drive axle assembly 5 and the right drive axle assembly 6 utilize a two-stage reduction gearbox, and the reduction ratio between the intermediate shaft of the left or right brake assembly and the corresponding output shaft is set within a range of 3 to 6. Since the outdoor gardening vehicle of this embodiment is equipped with a mowing component 7, primarily for lawn mowing, the curb weight of a typical household gardening vehicle is approximately 200 kg to 300 kg, and the curb weight of a commercial gardening vehicle is approximately 500 kg to 800 kg. According to calculations, if the brake disc 823 is positioned on the output shaft, the braking torque must satisfy 150 Nm ≤ T, which is quite demanding for an average user. However, in this embodiment, when a two-stage reduction gearbox is used, the braking torque on the intermediate shaft only needs to satisfy 30 Nm ≤ T ≤ 100 Nm, providing a relatively reasonable force and making it easy to pedal.

[0259] It is particularly noted that in other embodiments, if the mowing component 7 is replaced with other heavier functional components, resulting in a significant increase in the mass of the entire vehicle, in order to make the pedal assembly relatively labor-saving, the brake assembly should be set on the input shaft, or a reduction gearbox with a larger reduction ratio should be selected and the brake assembly should be set on the intermediate shaft close to the input shaft.

[0260] Both the left and right brake assemblies include a brake cylinder 822 mounted on the corresponding drive axle assembly. The brake cylinder 822 comprises a hydraulic cylinder 8221, a cylinder rod 8223, and friction pads 8222. A brake disc 823 is fixedly connected to the shaft of the left or right brake assembly. When the user steps on the pedal assembly, the brake cylinder 822 squeezes the brake disc 823 to generate braking force. During this process, the foot brake pump 811 connects to the hydraulic cylinder 8221 via a hydraulic pipe 810 and provides braking pressure. The cylinder rod 8223 moves relative to the hydraulic cylinder 8221, driving the friction pads and squeezing the brake disc 823 to generate braking force.

[0261] 6 to 7, in this embodiment, the number of cylinders of the brake wheel cylinder 822 is odd, that is, the brake assembly is only provided with a wheel cylinder 8221 on one side of the brake disc 823. Generally, a single brake assembly includes only one wheel cylinder 8221 and one wheel cylinder rod 8223, and the wheel cylinder 8221 is slidably mounted on the vehicle frame 1 or the corresponding reduction gear box. The friction plate 8222 includes a dynamic friction plate and a static friction plate. The dynamic friction plate is fixed to the wheel cylinder rod 8223 and is located on the brake disc 8 23, and the static friction plate is arranged on one side of the brake disc 823. When the foot brake pump 811 provides braking pressure to the slave cylinder 8221, the slave cylinder rod 8223 pushes the dynamic friction plate and the static friction plate to press the brake disc 823. In this process, the dynamic friction plate first contacts the brake disc 823, and then the slave cylinder rod 8223 continues to move to drive the static friction plate to move toward the brake disc 823 until the two friction plates 8222 contact the brake disc 823 and generate braking force.

[0262] In other embodiments, the number of cylinders of the brake master cylinder 822 is even, that is, the brake assembly only has master cylinder hydraulic cylinders 8221 on both sides of the brake disc 823. Generally, a single brake assembly includes two master cylinder hydraulic cylinders 8221 located on both sides of the brake disc 823, and two friction plates 8222 are fixed to the master cylinder rod 8223 and located on both sides of the brake disc 823. When the foot brake pump 811 provides braking pressure to the master cylinder hydraulic cylinder 8221, the master cylinder rod 8223 pushes the two moving friction plates to press the brake disc 823. It should be noted that if the positions of the two slave pump hydraulic cylinders 8221 are fixed, the positions of the slave pump hydraulic cylinders 8221 need to be precisely adjusted so that the distances from the two friction plates 8222 to the brake disc 823 are always equal. Otherwise, the friction plates 8222 on one side will not be able to effectively offset the brake disc 823, resulting in a poor deceleration effect. To solve this problem, the slave pump hydraulic cylinder 8221 is generally slidably installed on the frame 1 or the corresponding reduction gear box. At this time, the above-mentioned problem of needing to precisely adjust the position of the slave pump hydraulic cylinder 8221 can be avoided.

[0263] A floating mounting bracket 824 is fixed to the vehicle frame 1 or the corresponding reduction gear box, and the above-mentioned slave pump hydraulic cylinder 8221 is slidably connected to the floating mounting bracket 824 to achieve the effect of floating mounting of the slave pump hydraulic cylinder 8221 on the vehicle frame 1.

[0264] The thickness of the brake disc 823 is 2mm to 6mm, the diameter of the brake disc 823 is 60mm to 300mm, the hydraulic pressure range of the brake wheel cylinder 822 is 2Mpa to 40Mpa, the piston stroke of the brake wheel cylinder 822 cylinder rod is 0.5mm to 20mm, the cylinder rod diameter of the foot brake pump 811 is 5mm to 30mm, the diameter of the wheel cylinder hydraulic cylinder 8221 is 5mm to 40mm, and the cylinder rod stroke of the foot brake pump 811 is 5mm to 100mm. The various components of reasonable size work together to achieve an effective braking effect. In another optional embodiment, the cylinder rod stroke of the foot brake pump 811 is 10mm to 60mm.

[0265] Referring to Figures 3 and 4 , the parking brake assembly further includes a rotating plate 807 and a brake spring 808. Rotating plate 807 is rotatably connected to the vehicle frame 1 , and the pedal assembly is fixedly connected to rotating plate 807. The ends of brake spring 808 are connected to the vehicle frame 1 and rotating plate 807, respectively. A threaded push rod 812 is connected to rotating plate 807. When a user steps on the pedal assembly, rotating plate 807 rotates and pulls on brake spring 808, pushing threaded push rod 812 to compress foot brake pump 811 and generate braking force. In this embodiment, brake spring 808 is a brake tension spring. When the user steps on the pedal assembly, rotating plate 807 rotates and stretches the brake tension spring, which provides the tension to partially restore the pedal assembly.

[0266] In other embodiments, the brake spring 808 can also be a brake torsion spring or a brake compression spring. When the brake torsion spring is selected, when the user steps on the pedal assembly to rotate the rotating plate 807, one end of the brake torsion spring rotates synchronously therewith; when the brake compression spring is selected, when the user steps on the pedal assembly, the rotating plate 807 rotates and compresses the brake compression spring.

[0267] To facilitate the arrangement of the brake spring 808, the brake parking assembly of this embodiment also includes a fixed bracket 809 fixedly connected to the frame 1, the rotating plate 807 is rotatably connected to the fixed bracket 809, and the two ends of the brake tension spring are respectively connected to the fixed bracket 809 and the rotating plate 807.

[0268] 2 to 5 , the pedal assembly includes a main pedal 801, an auxiliary pedal 802, a hook plate 804, and a hook plate torsion spring 805. A limit rod 806 is fixedly connected to the frame 1. The hook plate 804 is rotatably connected to the main pedal 801. When the user steps on the main pedal 801, the hook plate 804 can be hooked on the limit rod 806, so that the brake module is in the parking state. The brake module in the parking state can continue to provide a large braking force. When the user releases the pedal assembly at this time, the state of the brake module will not change, and the entire vehicle will remain in place under the action of the braking force. The hook plate torsion spring 805 is set on the rotating shaft of the hook plate 804, and is used to generate an elastic force on the hook plate 804 so that it remains hooked on the limit rod 806 in the parking state, avoiding slight vibration even if the hook plate 804 and the limit rod 806 are separated. The hook plate torsion spring 805 maintains the contact force of the hook plate 804 and the limit rod 806 at 5N to 30N. In this embodiment, the hook plate torsion spring 805 maintains the contact force of the hook plate 804 and the limiting rod 806 at 7N.

[0269] When the main pedal 801 moves due to being stepped on by the user, at least one of the two surfaces of the hook plate 804 and the limit rod 806 that first come into contact is a curved surface, and the user steps on the main pedal 801 to make the hook plate 804 and the limit rod 806 abut against each other, so that the hook plate 804 can rotate until the inner side of the hook plate 804 bypasses the limit rod 806 and is hooked on the limit rod 806, thereby realizing the parking action.

[0270] The auxiliary pedal 802 is movably connected to the main pedal 801. When stepped on by a user, the auxiliary pedal 802 can disengage the hook plate 804 from the stop rod 806. Specifically, when stepped on by the user, the auxiliary pedal 802 moves and compresses the hook plate 804, causing the hook plate 804 to rotate away from the stop rod 806 and disengage from the stop rod 806. The maximum rotation angle of the hook plate 804, which moves from the state of being engaged with the stop rod 806 to the state of being disengaged from the stop rod 806, is 5° to 30°.

[0271] The auxiliary pedal 802 in this embodiment is rotatably connected to the main pedal 801 , and the user steps on the auxiliary pedal 802 to rotate it within an angle range of 0 to 90 degrees.

[0272] In other embodiments, the auxiliary pedal 802 can also be slidably set on the main pedal 801, as long as it is stepped on to drive the hook plate 804 to rotate and disengage from the limit rod 806; the specific setting method is not limited to the above-mentioned rotation or sliding connection relationship.

[0273] In this embodiment, the main pedal 801 and auxiliary pedal 802 can be stepped on simultaneously or separately by a single foot. Specifically, the auxiliary pedal 802 is positioned adjacent to the main pedal 801 and is typically positioned to one side of the main pedal 801. A auxiliary pedal torsion spring 803 is provided at the hinged connection between the auxiliary pedal 802 and the main pedal 801. This spring ensures that the auxiliary pedal 802 remains free of the hook plate 804 when not being stepped on, preventing the hook plate 804 from being struck by external forces or user vibrations, potentially releasing the parking state. In this embodiment, the force required to depress the auxiliary pedal 802 and disengage the hook plate 804 from the stop rod 806 is between 3N and 100N, which is less than the force required to depress the main pedal 801 and place the brake module 8 in the parking state.

[0274] Similar to the aforementioned brake spring 808, the hook plate torsion spring 805 and the auxiliary pedal torsion spring 803 in this specification can also be replaced by compression springs or tension springs. Those skilled in the art can select the appropriate specific setting method according to actual conditions, which will not be elaborated here.

[0275] 2 to 5 , in this embodiment, the auxiliary pedal 802 is arranged on the rear side of the main pedal 801, that is, when the user steps on the pedal, the forefoot acts on the main pedal 801 and the heel acts on the auxiliary pedal 802; because users are generally accustomed to using more force with the forefoot when stepping on the pedal, in this embodiment, the pedaling force of the main pedal 801 is greater than that of the auxiliary pedal 802, so this setting is more in line with the user's habits.

[0276] 8 , the outdoor gardening vehicle in this embodiment further includes an identification module, a control system, and a reminder module.

[0277] The identification module is used to detect whether the main pedal 801 is stepped on; the control system includes a whole machine control module, a motor control module and a battery management module, and the whole machine control module, the motor control module and the battery management module are connected to each other by signal, the battery management module signal is connected to the power supply component, and the motor control module signal is connected to the drive motor; when the identification module detects that the main pedal 801 is stepped on, the control system controls the left drive motor and the right drive motor to stop rotating, that is, the drive motor and the brake module 8 are linked to avoid the drive motor still outputting power during braking, otherwise it will cause the braking distance to increase, the brake disc 823 to overheat or even dry burn, the drive motor to overheat and other faults; and the reminder module sends a braking status reminder to the user to remind the user that the user is currently in a braking state.

[0278] Referring to Figure 4, the identification module in this embodiment includes a micro switch 818 arranged on the frame, and a switch pressure plate 819 is fixed on the rotating plate 807. The switch pressure plate 819 presses the micro switch 818 when the main pedal 801 is in a naturally released state; when the user steps on the main pedal 801 to drive the rotating plate 807 to rotate, the switch pressure plate 819 disengages from the micro switch 818. At this time, the micro switch 818 triggers the control of the left drive motor and the right drive motor to stop rotating. In this embodiment, as long as the user steps on the main pedal 801 to cause it to rotate, the switch pressure plate 819 will inevitably disengage from the micro switch 818, thereby triggering the identification module to control the drive motor to stop rotating.

[0279] A switch box 820 is fixedly mounted on the fixed bracket 809 , and the micro switch 818 and the switch pressure plate 819 are both installed in the switch box 820 . The switch box 820 provides a protective effect for the micro switch 818 and the switch pressure plate 819 to prevent erroneous signals from being generated by contact with external objects.

[0280] The foot brake pump 811 is provided with an oil brake force damping adjustment mechanism, which is used to allow the pedal assembly to continue to be stepped on when the hydraulic oil in the foot brake pump 811 is compressed to the limit; when the hydraulic oil in the foot brake pump 811 is compressed to the limit, the friction plate 8222 of the brake cylinder 822 is tightly against the brake disc 823, and the piston rod in the foot brake pump 811 cannot be squeezed and continues to move in the cylinder. If the damping adjustment mechanism is not provided, then when the hydraulic oil is compressed to the limit, the pedal assembly cannot be stepped on any further, that is, the user will feel that the pedal assembly is "particularly hard", resulting in a poor pedaling experience. When a damping adjustment mechanism is provided, after the hydraulic oil is compressed to the limit, continuing to step on it will compress the damping adjustment mechanism, and the user will feel that the damping of the stepping is getting bigger and bigger, but the damping force gradually increases, and will not give the user a "particularly hard" foot feeling, thereby improving the user experience.

[0281] The hydraulic brake force damping adjustment mechanism includes an oil pump bracket 813 and a damping element. The damping element is capable of elastic deformation when subjected to pressure. The oil pump bracket 813 is fixed to the vehicle frame 1, and the damping element is connected to the foot brake pump 811 and the oil pump bracket 813. After the hydraulic oil is compressed to its limit, continuing to step on the pedal assembly causes the damping element to deform, applying a reverse elastic force to the foot brake pump 811.

[0282] The oil brake force damping adjustment mechanism also includes a guide member connected to the foot brake pump 811, which is used to limit the foot brake pump 811 to reciprocating movement only in the direction of being squeezed by the pedal assembly. The function of the guide member is to prevent the foot brake pump 811 from deflecting during movement, ensuring that each component moves in a predetermined direction and avoiding abnormal force caused by deflection.

[0283] The damping member in this embodiment is a damping compression spring 815, and the guide member is a bolt 814. The bolt 814 passes through the foot brake pump 811 and the damping compression spring 815 in sequence and is threadedly connected to the oil pump bracket 813. The foot brake pump 811 and the bolt 814 are slidably sleeved on the bolt 814, and the bolt 814 limits the maximum distance between the foot brake pump 811 and the oil pump bracket 813. The damping compression spring 815 is arranged between the foot brake pump 811 and the oil pump bracket 813. When the squeezing force of the threaded push rod 812 on the foot brake pump 811 is greater than the elastic force of the damping spring, the damping spring is continued to be compressed, and the foot brake pump 811 can move relative to the oil pump bracket 813.

[0284] After assembly, the damping element possesses an initial damping force that is slightly less than the squeezing force exerted by the threaded push rod 812 on the foot brake pump 811 when the vehicle is fully braked (i.e., when the hydraulic oil is completely uncompressed). This means that the damping element begins to deform from the moment the pedal assembly is first stepped on until the hydraulic oil is fully compressed. However, if the pedal assembly is continued to be stepped on when the hydraulic oil is fully compressed, only the damping element continues to deform, and the rebound force exerted on the user's foot by this deformation increases linearly. This ensures that the pedaling force gradually increases from the moment the user begins to step on the pedal assembly until the pedal assembly is completely unable to step on it. This further enhances the user's foot feel.

[0285] When the main pedal 801 is naturally released, the brake spring is in state 1. When the hook plate 804 is hooked onto the limit rod 806, the damping spring 815 is in state 2. In state 2, the compression of the damping spring 815 is greater than that in state 1. The difference in compression between states 2 and 1 is 1 mm to 60 mm. This difference in compression corresponds to the distance traveled by the foot brake pump 811. This reasonable distance range is also intended to enhance the user's foot feel.

[0286] In other embodiments, the damping member may also be selected from a variety of options such as torsion bar springs, air springs, oil-gas springs, and rubber springs. The guiding function of the guide member may also be achieved through guide rails or other limiting methods. The setting method is similar to the aforementioned brake spring. Those skilled in the art can perform simple adaptive assembly according to needs to achieve the above effects.

[0287] An adjustment nut 817 is disposed between the threaded push rod 812 and the rotating plate 807. The adjustment nut 817 is connected to the rotating plate 807. The threaded push rod 812 is threadedly connected to the adjustment nut 817. The end of the threaded push rod 812 away from the adjustment nut 817 abuts the piston rod of the foot brake pump 811. The threaded push rod 812 has a certain threaded portion. When used in conjunction with the adjustment nut 817, the position of the threaded push rod 812 relative to the rotating plate 807 can be adjusted. This can reduce the idle stroke caused by mechanical cumulative error and significantly shorten the response time of the brake pump. Referring to the accompanying drawings, to facilitate the installation of the adjustment nut 817, a connecting plate 816 is provided on the rotating plate 807 in this embodiment. The adjustment nut 817 is rotatably connected to the connecting plate 816. Rotating the adjustment nut 817 adjusts the length of the threaded push rod 812 screwed into the connecting plate 816, thereby shortening the response time of the brake pump.

[0288] In one embodiment of the present specification, the outdoor gardening vehicle further includes a user seat 2 connected to the vehicle frame 1 for the user to sit on rather than stand while driving, thereby freeing the user's feet to step on the pedal assembly.

[0289] Furthermore, in other embodiments, the outdoor gardening vehicle further includes a standing pedal connected to the frame 1 for the user to stand while driving, at which time the user has a better field of view.

[0290] In another optional embodiment, the present specification also discloses a lawn mower, which includes a frame 1, a left drive axle assembly 5, a right drive axle assembly 6, a mowing component 7, a power supply component, and a brake module. The left drive axle assembly 5 is mechanically connected to the left drive motor and the left drive wheel 3 to transmit the power of the left drive motor to the left drive wheel 3; the right drive axle assembly 6 is mechanically connected to the right drive motor and the right drive wheel 4 to transmit the power of the right drive motor to the right drive wheel 4. The mowing component 7 is arranged at the lower part of the frame 1 to produce a cutting effect on the vegetation on the ground. The power supply component is electrically connected to the left drive motor, the right drive motor and the mowing component 7 to supply power to the left drive motor, the right drive motor and the mowing component 7. The braking module includes a brake parking assembly and a foot brake pump 811; the brake parking assembly includes a pedal assembly, which is hinged to the frame 1 and forms a lever with the foot brake pump 811. When the user steps on the pedal assembly, the foot brake pump 811 is triggered to generate braking force on the left drive axle assembly 5 and the right drive axle assembly 6.

[0291] In another optional embodiment, the present specification also discloses an electric outdoor gardening work vehicle, which includes a frame 1, a left drive axle assembly 5, a right drive axle assembly 6, a mowing component 7, a power supply component, and a brake module. The left drive axle assembly 5 is mechanically connected to the left drive motor and the left drive wheel 3 to transmit the power of the left drive motor to the left drive wheel 3; the right drive axle assembly 6 is mechanically connected to the right drive motor and the right drive wheel 4 to transmit the power of the right drive motor to the right drive wheel 4. The mowing component 7 is arranged at the lower part of the frame 1 to produce a cutting effect on the vegetation on the ground. The power supply component is electrically connected to the left drive motor, the right drive motor and the mowing component 7 to supply power to the left drive motor, the right drive motor and the mowing component 7. The braking module includes a brake parking assembly and a foot brake pump 811; the brake parking assembly includes a pedal assembly, which is hinged to the frame 1 and forms a lever with the foot brake pump 811. When the user steps on the pedal assembly, the foot brake pump 811 is triggered to generate braking force on the left drive axle assembly 5 and the right drive axle assembly 6.

[0292] In another optional embodiment, this specification also discloses a riding lawn mower comprising a frame 1, a seat, a left drive axle assembly 5, a right drive axle assembly 6, a mowing unit 7, a power supply, and a brake module. The seat is connected to the frame 1 and is provided for a user to ride on. The left drive axle assembly 5 is mechanically connected to the left drive motor and the left drive wheel 3 to transmit power from the left drive motor to the left drive wheel 3; the right drive axle assembly 6 is mechanically connected to the right drive motor and the right drive wheel 4 to transmit power from the right drive motor to the right drive wheel 4. The mowing unit 7 is disposed at the bottom of the frame 1 and is used to cut vegetation on the ground. The power supply is electrically connected to the left and right drive motors and the mowing unit 7 to supply power to the left and right drive motors and the mowing unit 7. The brake module includes a brake parking assembly, which generates braking force on the left and right drive axle assemblies 5 and 6 when the user steps on the brake parking assembly. The brake parking assembly includes a pedal assembly, which includes a main pedal 801 and an auxiliary pedal 802. When a user steps on the main pedal 801, the brake module enters the braking state and the parking state. When a user steps on the auxiliary pedal 802, the brake module can be released from the parking state.

[0293] In another optional embodiment, this specification also discloses an outdoor gardening work vehicle, which includes a frame 1, a left drive axle assembly 5, a right drive axle assembly 6, working parts, a power supply component, and a brake module. The left drive axle assembly 5 is mechanically connected to the left drive motor and the left drive wheel 3 to transmit the power of the left drive motor to the left drive wheel 3; the right drive axle assembly 6 is mechanically connected to the right drive motor and the right drive wheel 4 to transmit the power of the right drive motor to the right drive wheel 4. The working parts are arranged at the lower part of the frame 1 and are used to perform outdoor work on the ground. The power supply component is electrically connected to the left drive motor, the right drive motor and the working parts to supply power to the left drive motor, the right drive motor and the working parts. The brake module includes a brake parking component, and the user steps on the brake parking component to generate braking force on the left drive axle assembly 5 and the right drive axle assembly 6. The brake parking assembly includes a pedal assembly, which includes a main pedal 801 and an auxiliary pedal 802. When a user steps on the main pedal 801, the brake module enters the braking state and the parking state. When a user steps on the auxiliary pedal 802, the brake module can be released from the parking state.

[0294] In another optional embodiment, this specification also discloses an electric outdoor gardening work vehicle, comprising a frame 1, a left drive axle assembly 5, a right drive axle assembly 6, working components, a power supply component, and a brake module. The left drive axle assembly 5 and the right drive axle assembly 6 are mechanically connected to the left drive motor and the left drive wheel 3 to transmit power from the left drive motor to the left drive wheel 3; the right drive axle assembly 6 is mechanically connected to the right drive motor and the right drive wheel 4 to transmit power from the right drive motor to the right drive wheel 4. The working components are disposed below the frame 1 and are used for outdoor ground work. The power supply component is electrically connected to the left and right drive motors and the working components to supply power to the left and right drive motors and the working components. The brake module includes a brake parking assembly and a foot brake pump 811. The brake parking assembly includes a pedal assembly. When stepped on by a user, the pedal assembly compresses the foot brake pump 811 and generates braking force on the left and right drive axle assemblies 5 and 6.

[0295] In another optional embodiment, this specification also discloses a riding type outdoor gardening work vehicle, which includes a frame 1, a seat, a left drive axle assembly 5, a right drive axle assembly 6, an operating part, a power supply part, and a brake module. The seat is connected to the frame 1 and is used for the user to sit. The left drive axle assembly 5 and the right drive axle assembly 6, the left drive axle assembly 5 is mechanically connected to the left drive motor and the left drive wheel 3, so as to transmit the power of the left drive motor to the left drive wheel 3; the right drive axle assembly 6 is mechanically connected to the right drive motor and the right drive wheel 4, so as to transmit the power of the right drive motor to the right drive wheel 4. The operating part is arranged at the lower part of the frame 1 and is used for outdoor work on the ground. The power supply part is electrically connected to the left drive motor, the right drive motor and the operating part, so as to supply power to the left drive motor, the right drive motor and the operating part. The brake module includes a brake and parking assembly and a foot brake pump 811. The brake and parking assembly includes a pedal assembly. When stepped on by a user, the pedal assembly compresses the foot brake pump 811 and generates braking force on the left drive axle assembly 5 and the right drive axle assembly 6. The brake and parking assembly includes a pedal assembly, which includes a main pedal 801 and a secondary pedal 802. When a user steps on the main pedal 801, the brake module enters the braking state and the parking state. When a user steps on the secondary pedal 802, the brake module is released from the parking state.

[0296] Lawn mowers are mainly used for lawn maintenance. Compared with manual maintenance, they can effectively reduce costs, especially the current rechargeable lawn mowers. Compared with traditional fuel-powered lawn mowers, they have the advantages of all-weather zero emissions, zero fuel consumption, low noise, and simple maintenance (no gasoline, no engine oil, no air filter, no spark plugs, no fuel storage, etc.). The rechargeable lawn mower drive wheels use electric motors instead of fuel engines, and the drive wheel motors can be controlled separately to achieve straight-moving, reverse, turning, zero-turn and other motion control of the vehicle, reducing the structural complexity of the vehicle and making the control of the vehicle more flexible.

[0297] The motor output shaft of existing rechargeable lawn mowers is connected to the wheels through a mechanism. When the riding lawn mower is stationary (without control), it is pushed / pulled by an external force (trailer). During this process, the rotation of the wheels will drive the motor to rotate, causing the motor to generate electricity. If the trailer is traveling at a high speed, that is, the vehicle speed is very high, the voltage generated by the motor will also be very high. If the voltage is too high, exceeding the maximum voltage that the controller can withstand, it will damage and fail the controller. Therefore, current rechargeable lawn mowers generally do not allow trailers. However, in actual use, there are inevitable scenarios where trailers are needed for long-distance transfers, such as moving, out-of-town maintenance, etc., especially for commercial lawn mowers, which are transported more frequently. This requires users to use special vehicles with lifting equipment to move the vehicle, which is expensive and time-consuming.

[0298] In view of this, it is indeed necessary to provide a zero-turn lawn mower with a trailer function to overcome the defects of the prior art.

[0299] Please refer to FIG. 9 to FIG. 13 , which show a zero-turn lawn mower according to one embodiment of the present specification, including a frame, a drive axle assembly, a mowing component, and a power supply component.

[0300] The drive axle assembly includes a left drive axle assembly and a right drive axle assembly, which are respectively mechanically connected to the drive motor 1 and the drive wheel on the corresponding side to transmit the power of the drive motor 1 to the drive wheel; referring to Figure 9, the drive axle assembly is arranged at the rear of the lawn mower, that is, the rear wheel is the drive wheel and the front wheel is a universal wheel, thereby realizing a zero-steering function and improving the operating performance of the lawn mower.

[0301] The mowing unit is disposed at the lower portion of the frame and is used to cut vegetation on the ground. Specifically, the left and right drive wheels 4 are located at the rear of the mowing unit 7. It should be noted that the mowing unit 7 should not be narrowly understood as a mechanism capable of only mowing grass. It can also be replaced with other functional components, such as snow sweepers and snow blowers. Those skilled in the art should be able to adaptably replace various functional components without inventive effort, and all such replacements should be included within the scope of protection of this embodiment.

[0302] The power supply component is electrically connected to the drive motor 1 and the mowing component, and is used to supply power to the drive motor 1 and the mowing component; the power supply component in this embodiment is a battery pack; in other embodiments, a combination of an internal combustion engine and a battery can also be selected. In this form, the internal combustion engine burns fuel to charge the battery through a generator, and the battery then supplies power to various components of the lawn mower.

[0303] The drive axle assembly includes a shell and multiple shafts; at least one of the shafts is connected to an idle gear mechanism, which can control the drive axle assembly to be in an idle state or a gear state. In the gear state, the drive axle assembly outputs the power of the drive motor 1 to the drive wheel, and the drive motor 1 can drive the lawn mower forward or backward; the drive axle assembly does not output the power of the drive motor 1 to the drive wheel in the idle state. At this time, the drive motor 1 cannot move the lawn mower. When the lawn mower is pulled by the traction equipment, the drive wheel contacts the ground and rotates, but its power will not be transmitted to the drive motor 1, nor will the motor be in a power generation state to damage the motor or controller.

[0304] The shaft body includes an input shaft 3 and an output shaft 5; the input shaft 3 is mechanically connected to the drive motor 1, and the drive motor 1 drives the input shaft 3 to rotate; the output shaft 5 is connected to the input shaft 3 and the drive wheel, and is used to output the power of the drive motor 1 to the drive wheel.

[0305] Please refer to Figure 14. The zero-turn lawn mower also includes an identification module, a control system and a reminder module; the identification module is used to identify whether the drive axle assembly is in a neutral state; the control system includes a whole machine control module, a motor control module and a battery management module, and the whole machine control module, the motor control module and the battery management module are connected to each other by signal, the battery management module signal is connected to the power supply component, and the motor control module signal is connected to the drive motor 1; when the identification module detects that the drive axle assembly is in a neutral state, it sends a neutral reminder to the user through the reminder module, clearly informing the user that the current state is neutral; accordingly, when the drive axle assembly is in a gear state, the neutral reminder disappears, and the user can know that the current state is not neutral and can drive the lawn mower normally to perform mowing operations.

[0306] The neutral mechanism includes an operating part and an action part that are connected to each other. The action part can put the drive axle assembly in a neutral state or a gear state under the action of the operating part. The user controls the operating part to move the action part to achieve gear changes.

[0307] Please refer to Figure 10. In this embodiment, a movable gear 2 that can transmit torque and slide relative to the shaft is provided on the shaft body on which the neutral gear mechanism is provided. That is, when the shaft body rotates, the movable gear 2 must rotate synchronously with it, but the movable gear 2 can slide on the shaft body. A fixed gear is provided on the shaft body adjacent to the shaft body on which the neutral gear mechanism is provided. The operating part can be controlled to drive the movable gear 2 to slide along the shaft body so that the movable gear 2 engages or disengages with the fixed gear. When the movable gear 2 engages with the fixed gear, the drive axle assembly is in a gear-engaged state. When the movable gear 2 disengages from the fixed gear, the drive axle assembly is in a neutral state.

[0308] The moving gear 2 is key-connected to the corresponding shaft, that is, the key between the moving gear 2 and the shaft produces synchronous rotation. For example, a key is set on the shaft, and a keyway (or other shape that can cooperate with the key) is set on the moving gear 2, and the key can slide in the keyway.

[0309] Specifically, please refer to Figure 10. In this embodiment, an internal spline is provided on the inner ring of the movable gear 2, and an external spline that cooperates with the internal spline is provided on the shaft body to which the movable gear 2 is slidably connected. The movable gear 2 slides along the external spline and can switch between the state of engagement and disengagement with the fixed gear, so that the drive axle assembly can be switched between the gear-engaged state and the neutral state.

[0310] Please refer to Figures 10 to 13. The action portion includes a neutral shifting member. When the neutral shifting member slides along the corresponding shaft, the driving gear 2 slides to shift the drive axle assembly to a gear state or a neutral state.

[0311] In this embodiment, a circular shift groove is formed on the movable gear 2, into which one end of the neutral shift member engages. The neutral shift member is a neutral shift fork 9, which is bifurcated near the end of the movable gear 2 and extends into the shift groove. While the movable gear 2 may be rotating, the ring-shaped shift groove ensures that when the neutral shift fork 9 is engaged, the movable gear 2 will not disengage from the neutral shift fork 9 regardless of its rotational position. Furthermore, any movement of the neutral shift fork 9 along the shaft will inevitably cause the movable gear 2 to slide synchronously with it.

[0312] In order to facilitate the assembly of the neutral shift fork 9 and the shift slot, an arc-shaped outer edge is provided at one end of the neutral shift fork 9 connected to the shift slot, and the central angle of the arc-shaped outer edge is less than or equal to 180°.

[0313] In another embodiment, a ring of protrusions is provided on the movable gear 2, and one end of the neutral shift member engages with the protrusions. The neutral shift member is a neutral shift lever, and the neutral shift lever has a slot that engages with the protrusions on the end near the movable gear 2. Similarly, the movable gear 2 is caused to slide by operating the neutral shift lever.

[0314] Please refer to Figures 10 to 13. In one embodiment of this specification, the neutral fork 9 is connected to the sliding rod 8, and the sliding rod 8 is slidably connected to the housing. That is, the neutral fork 9 can slide relative to the housing of the gearbox.

[0315] In order to facilitate the control of the sliding rod 8, the operating part includes the sliding rod 8, the sliding rod 8 passes through the side wall of the housing and is connected to a pull rod 14 located outside the housing. The pull rod 14 is provided with a handle 15 for manual gripping.

[0316] Because lubricating oil is typically provided inside the gearbox to lubricate the gears, an O-ring 11 is installed on the sliding rod 8 to seal the connection between the housing and the sliding rod 8. Referring to Figure 10 , for ease of installation, an annular screw plug 12 is typically installed on the gearbox housing via a fine-pitch thread. The sliding rod 8 extends through the screw plug 12, and the O-ring 11 seals the connection between the sliding rod 8 and the screw plug 12.

[0317] A spring 10 is sleeved on the sliding rod 8, with its ends connected to the housing and the outer wall of the sliding rod 8, respectively. The spring 10 exerts an elastic force on the sliding rod 8, causing it to move the drive axle assembly into neutral or gear. This prevents the movable gear 2 from only partially meshing with the fixed gear along the axis. If the movable gear 2 only partially meshes with the fixed gear, there is a high probability of damage due to excessive local pressure on the gear during power transmission.

[0318] A limit plate 16 is fixedly connected to the exterior of the housing. This limit plate 16 is used to limit the position of the handle 15, placing the drive axle assembly in neutral or in gear, thereby ensuring that the drive axle assembly remains stable in a particular state. Specifically, the limit plate 16 has two limit slots 162. When the handle 15 is engaged in one of the limit slots 162, the drive axle assembly is in neutral; when the handle 15 is engaged in the other limit slot 162, the drive axle assembly is in gear. The user can determine whether the drive axle assembly is in neutral or in gear by the position of the handle 15. Furthermore, the spring 10 forces the handle 15 to abut against the sidewalls of the limit slots 162, damping the handle 15 as it slides along the sidewalls. Therefore, the limit slots 162 also provide a certain limit to the handle 15, preventing it from easily disengaging from the corresponding limit slots 162.

[0319] The limiting plate 16 is provided with a slideway 161 connecting the two limiting slots 162 . The handle 15 can move along the slideway 161 from one limiting slot 162 to the other limiting slot 162 to complete the switching of the gear state of the drive axle assembly.

[0320] The limiting plate 16 is provided with an anti-slip member to prevent the handle 15 from being vibrated and disengaging from the limiting groove 162. The anti-slip member of this embodiment includes a limiting protrusion provided on the side wall of the limiting groove 162. The handle 15 is prevented from sliding directly into the slide 161 in the limiting groove 162 by the combined action of the spring 10 and the limiting protrusion. That is, the handle 15 will abut against the side wall of the limiting groove 162 under the action of the spring 10. In this abutting state, the handle 15 is blocked by the limiting protrusion and cannot slide into the slide 161. At this time, it is necessary to manually pull the handle 15 to move and compress the spring 10 until the handle 15 can bypass the limiting protrusion and slide into the slide 161.

[0321] The sliding rod 8 and the pull rod 14 are connected together by a connecting plate 13, which is located outside the housing. The connecting plate 13 is used to stably connect the handle 15 and the sliding rod 8, ensuring that the sliding rod 8 moves synchronously with the pull rod 14. The sliding rod 8 moves synchronously with the linear motion of the handle 15. To ensure that the neutral shift fork 9 and the driven gear 2 remain connected, the sliding rod 8 should not rotate. Therefore, the handle 15 is configured to be rotationally connected to the pull rod 14, and the handle 15 can drive the pull rod 14 to move synchronously when it moves axially along the pull rod 14. That is, the linear motion of the handle 15 synchronously drives the sliding rod 8 to move.

[0322] In another embodiment, the handle 15 can be partially replaced by an electric push rod; specifically: the sliding rod 8 passes through the side wall of the shell, and an electric push rod connected to the sliding rod 8 is provided outside the shell. The electric push rod can be controlled to extend and retract to drive the sliding rod 8 to move the drive axle assembly to switch between neutral and gear states. This is to achieve gear switching through the electric push rod.

[0323] Referring to Figure 15, in another embodiment, the gear change can also be controlled by a handbrake cable; specifically: the sliding rod 8 passes through the side wall of the shell, and the zero-turn lawn mower also includes a handbrake 17 and a handbrake cable. The handbrake cable is connected to the sliding rod 8. Controlling the handbrake 17 to drive the handbrake cable to move can cause the sliding rod 8 to move accordingly, thereby switching the drive axle assembly between neutral and gear states.

[0324] Referring to FIG. 16 , in another embodiment, the gear change can also be controlled by an electric push rod 19. Specifically, the sliding rod 8 passes through the side wall of the shell. The zero-turn lawn mower also includes a control switch 18 and an electric push rod 19. The electric push rod 19 is connected to the sliding rod 8. Operating the control switch 18 to drive the electric push rod 19 to extend and retract can cause the sliding rod 8 to move accordingly, thereby switching the drive axle assembly between neutral and gear states.

[0325] Referring to Figure 10, in one embodiment of the present specification, the shaft on which the movable gear 2 is located is parallel to the shaft on which the fixed gear is located, and both the movable gear 2 and the fixed gear are spur gears, and the movable gear 2 slides along the axial direction of the fixed gear until it is engaged or disengaged.

[0326] In another embodiment of the present disclosure, the axis of the movable gear 2 is not parallel to the axis of the fixed gear, and both the movable gear 2 and the fixed gear are bevel gears. Bevel gears not only achieve the same gear engagement and disengagement effects, but also somewhat free up the placement of the axis of the movable gear 2. In this embodiment, the axis of the movable gear 2 does not need to be parallel to the axis of the fixed gear; the two can be arranged at any angle within a coplanar range. This increases the layout options for the motor and drive axle assembly, making it easier for those skilled in the art to add other functional components to the drive axle or around the motor.

[0327] In this specification, the movable gear 2 can be arranged on the input shaft 3, and the fixed gear can be arranged on the output shaft 5; alternatively, the fixed gear can be arranged on the input shaft 3, and the movable gear 2 can be arranged on the output shaft 5. Furthermore, the multiple shafts also include several intermediate shafts 4 arranged between the input shaft 3 and the output shaft 5. These intermediate shafts 4 can transmit the power of the input shaft 3 to the output shaft 5. Common drive axle housings are generally reduction gearboxes. Generally speaking, the more intermediate shafts 4 there are, the greater the reduction ratio of the gearbox; for example, a gearbox containing one intermediate shaft 4 is a two-stage reduction gearbox, and a gearbox containing two intermediate shafts 4 is a three-stage reduction gearbox.

[0328] When the drive axle assembly includes an intermediate shaft 4, if the movable gear 2 is set on the input shaft 3, the fixed gear is set on the intermediate shaft 4 adjacent to the input shaft 3; or the movable gear 2 is set on the output shaft 5, and the fixed gear is set on the intermediate shaft 4 adjacent to the output shaft 5; or the movable gear 2 is set on one of the intermediate shafts 4, and the fixed gear is set on the intermediate shaft 4 adjacent to it, the input shaft 3, or the output shaft 5.

[0329] Referring to FIG. 10 , the drive axle assembly in one embodiment of this specification utilizes a two-stage reduction gearbox. The intermediate shaft 4 is one, with the movable gear 2 mounted on the input shaft 3 and the fixed gear mounted on the intermediate shaft 4. Because the outer end surface of the input shaft 3 is relatively close to the tire, the neutral mechanism handle 15 would be very tight if located between the drive axle assembly and the tire, making it inconvenient for the operator to use. Furthermore, a plastic cover is typically installed above the tire, leaving no operating space above the center plane of the drive axle assembly housing. Therefore, in this embodiment, the handle 15 is positioned horizontally within the outer end surface of the housing and vertically below the center plane of the housing. This increases operating space and simplifies operation. Furthermore, because the user does not touch the handle 15 during normal operation, the probability of accidentally touching the handle 15 and causing a gear error is reduced.

[0330] In another embodiment, the drive axle assembly may also utilize a planetary gear reduction box, comprising a sun gear, a ring gear, and several planetary gears. The ring gear is fixed to the housing, and the planetary gears are connected to a planetary carrier. The input shaft 3 is connected to the sun gear, and the output shaft 5 is connected to the planetary carrier. The shafts of the sun gear and the planetary carrier form an intermediate shaft 4. In this case, the movable gear 2 can be mounted on the sun gear shaft, and the fixed gears can be mounted on the planetary gear shafts.

[0331] Referring to Figure 17, in other embodiments, the neutral mechanism may also use solutions other than the movable gear 2 and the fixed gear. For example, the neutral mechanism includes an operating part and an action part, the operating part includes a control switch 18, and the action part includes an electromagnetic clutch 20. The shaft body of the electromagnetic clutch 20 is divided into a coaxial front shaft body and a rear shaft body, and the electromagnetic clutch 20 includes two synchronizers 21. The two synchronizers 21 are respectively arranged on the front shaft body and the rear shaft body. The control switch 18 can control the two synchronizers 21 to offset or separate. The front shaft body and the rear shaft body transmit power when the two synchronizers 21 offset each other, and the drive axle assembly is in a gear state at this time; the front shaft body and the rear shaft body disconnect power transmission when the two synchronizers 21 are separated, and the drive axle assembly is in a neutral state.

[0332] In another optional embodiment, the present specification also discloses an outdoor gardening work vehicle, including a frame, a drive axle assembly, working parts, and a power supply part, wherein the drive axle assembly includes a left drive axle assembly and a right drive axle assembly, and the left drive axle assembly and the right drive axle assembly are respectively mechanically connected to the drive motor and the drive wheel on the corresponding side to transmit the power of the drive motor to the drive wheel; the working parts are arranged at the lower part of the frame and are used to perform outdoor work on the ground; the power supply part is electrically connected to the drive motor and the working parts to supply power to the drive motor and the working parts.

[0333] The drive axle assembly includes a shell and multiple shafts; at least one of the shafts is connected to a neutral mechanism, and the neutral mechanism can control the drive axle assembly to be in a neutral state or a gear state. The drive axle assembly outputs the power of the drive motor to the drive wheel in the gear state, and does not output the power of the drive motor to the drive wheel in the neutral state; the multiple shafts include an input shaft and an output shaft, the input shaft is mechanically connected to the drive motor, and the drive motor drives the input shaft to rotate; the output shaft is connected to the input shaft and the drive wheel, and is used to output the power of the drive motor to the drive wheel.

[0334] In another optional embodiment, the present specification also discloses a riding type garden work vehicle, comprising a frame, a seat, a drive axle assembly, a working part, and a power supply part, wherein the seat is connected to the frame and is used for the user to sit; the drive axle assembly comprises a left drive axle assembly and a right drive axle assembly, and the left drive axle assembly and the right drive axle assembly are respectively mechanically connected to the drive motor and the drive wheel on the corresponding side to transmit the power of the drive motor to the drive wheel; the working part is arranged at the lower part of the frame and is used for performing outdoor work on the ground; the power supply part is electrically connected to the drive motor and the working part, and is used to supply power to the drive motor and the working part.

[0335] The drive axle assembly includes a shell and multiple shafts; at least one of the shafts is connected to a neutral mechanism, and the neutral mechanism can control the drive axle assembly to be in a neutral state or a gear state. The drive axle assembly outputs the power of the drive motor to the drive wheel in the gear state, and does not output the power of the drive motor to the drive wheel in the neutral state; the multiple shafts include an input shaft and an output shaft, the input shaft is mechanically connected to the drive motor, and the drive motor drives the input shaft to rotate; the output shaft is connected to the input shaft and the drive wheel, and is used to output the power of the drive motor to the drive wheel.

[0336] In summary, a neutral mechanism is provided in the embodiments of the present specification, and the neutral mechanism includes an operating portion and an action portion. The user directly controls the operating portion to control the action portion located in the drive axle assembly, thereby placing the drive axle in neutral or in gear. The rotation of the wheels in the neutral state cannot transmit power to the drive motor, thereby preventing the drive motor from being in a power generation state when towing and damaging the lawn mower. When the lawn mower is in normal use, the drive axle assembly is in a gear state, and the power of the drive motor can be effectively transmitted to the drive wheel, allowing the lawn mower to operate normally.

[0337] It is further specified that at least a portion of the power supply component is detachably connected to the vehicle frame. The power supply component includes a plurality of battery cells that are detachable from the vehicle frame. The plurality of battery cells may be selected from at least one of a first specification battery pack and a second specification battery pack. Specification differences between the first specification battery pack and the second specification battery pack include, but are not limited to, differences in battery pack capacity, voltage, internal resistance, weight, size, energy density, cell type, charge information, and battery health status information.

[0338] In some optional embodiments, the difference between the first specification battery pack and the second specification battery pack is the different battery pack capacities. The capacity of the first specification battery pack is greater than the capacity of the second specification battery pack. The second specification battery pack is configured to provide power for handheld garden tools. For example, the second specification battery pack can power garden tools such as lawn mowers, pruners, hair dryers, and chainsaws. In addition, the second specification battery pack can also power torque output tools such as electric drills and electric hammers; power sawing tools such as electric circular saws, jigsaws, and reciprocating saws, or power grinding tools such as angle grinders and sanders.

[0339] In some optional embodiments, the difference between the first and second battery packs lies in the type of battery cells used. For example, the first and second battery packs may use lithium iron phosphate cells and ternary lithium cells, respectively. The multiple battery cells in the power supply component may also use nickel-cadmium battery cells, lead-acid battery cells, graphene battery cells, etc.

[0340] The multiple battery cells of the power supply component select at least one of the first specification battery pack and the second specification battery pack. This makes the multi-functional vehicle compatible with battery packs of different specifications, meeting high-power working requirements while also being adaptable to handheld electric gardening tools, making the working methods of gardening staff more flexible.

[0341] In one of the optional embodiments, the power supply component also includes a battery compartment, a battery management system, etc. The battery compartment is used to accommodate the battery pack, and the battery management system is used to manage the power supply of the battery pack to various components of the vehicle.

[0342] In one of the optional embodiments, the battery compartment and / or battery management system is configured on the vehicle frame, and the battery pack is detachably configured in the battery compartment to achieve detachable and replaceable battery packs, and the removed battery packs can be used for the other electric garden tools mentioned above; and the design of the detachable battery pack is such that when the vehicle's power is low or exhausted, there is no need to wait for a long charging time, and the vehicle can be quickly restored to a working state by simply replacing the battery pack.

[0343] In one optional embodiment, the battery compartment is detachably configured on the vehicle frame, and the battery pack is placed in the battery compartment, that is, the battery compartment can be separated from or combined with the vehicle frame as a whole.

[0344] In some optional embodiments, the gardening work component is implemented as a cutting table, and the gardening work vehicle under this embodiment is a lawn mower; in addition, if the gardening work component is a snow sweeping component, then the multifunctional gardening vehicle is a snow sweeper; that is, the gardening work component, as the main functional component of the multifunctional gardening vehicle, can be changed according to the user's choice; at the same time, in some embodiments, the above-mentioned gardening work component can also be a component that the user replaces according to actual needs, such as removing the cutting table for mowing and replacing it with a sweeping disc for sweeping the floor, which changes the lawn mower into a sweeper. In summary: the replacement of the gardening work component with any functional component according to user needs should not be understood as exceeding the scope of protection of this embodiment.

[0345] As mentioned above, a work vehicle equipped with a power supply component is a rechargeable work vehicle. Compared with traditional fuel-powered work vehicles, rechargeable work vehicles have the advantages of all-weather zero emissions, zero fuel consumption, low noise, and simple maintenance (no gasoline, no engine oil, no air filter, no spark plugs, no fuel storage, etc.). The power system of the rechargeable work vehicle uses an electric motor instead of a fuel engine, and the electric motors of the drive wheels can be controlled separately to realize the vehicle's straight-moving, reverse, turning, zero-turn and other motion control, reducing the structural complexity of the vehicle and making the control of the vehicle more flexible.

[0346] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0347] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0348] The present invention is not limited to the specific embodiments described above. Those skilled in the art will readily appreciate that many alternatives to the brake device and neutral mechanism described herein exist without departing from the principles and scope of the present invention. The scope of protection of the present invention shall be determined by the claims.

Claims

1. An outdoor garden operation vehicle, characterized in that, Comprising: Frame; Left drive axle assembly and right drive axle assembly. The left drive axle assembly is mechanically connected to the left drive motor and the left drive wheel to transmit the power of the left drive motor to the left drive wheel; the right drive axle assembly is mechanically connected to the right drive motor and the right drive wheel to transmit the power of the right drive motor to the right drive wheel. Working component, arranged below the frame for performing outdoor operations on the ground. Power supply component, electrically connected to the left drive motor, right drive motor and working component for supplying power to the left drive motor, right drive motor and working component. Braking module, including: Braking and parking assembly, foot brake pump; The braking and parking assembly includes a foot pedal assembly. The foot pedal assembly is hinged to the frame and forms a lever with the foot brake pump. When the user steps on the foot pedal assembly, the foot brake pump is triggered to generate braking force on the left drive axle assembly and right drive axle assembly.

2. An outdoor garden operation vehicle according to claim 1, characterized in that: The foot pedal assembly and the foot brake pump form a force-saving lever, and the ratio of the input force arm to the output force arm of the force-saving lever is 1 - 20:1 when the user steps on the foot pedal assembly.

3. The outdoor gardening operation vehicle according to claim 2, wherein: The braking module further includes: hydraulic pipe, left brake assembly, right brake assembly; When the user steps on the foot pedal assembly, the foot brake pump is triggered to generate braking pressure, which acts on the left brake assembly and right brake assembly through the hydraulic pipe at the same time, generating braking force on the left drive axle assembly and right drive axle assembly, so that the left drive wheel and right drive wheel are braked. The stepping force for the user to step on the foot pedal assembly to achieve braking is 20N - 500N.

4. An outdoor gardening operation vehicle according to claim 3, characterized in that: The stepping force for the user to step on the foot pedal assembly to achieve braking is 30N - 200N.

5. An outdoor garden working vehicle according to claim 3, characterized in that: The left drive axle assembly and right drive axle assembly select a reduction gearbox of level 2 or above. The reduction gearbox includes an input shaft, an output shaft and an intermediate shaft. The left brake assembly and right brake assembly are respectively arranged on the non-output shafts of the corresponding reduction gearboxes.

6. The outdoor garden operation vehicle according to claim 5, characterized in that: The left brake assembly and right brake assembly are respectively arranged on the intermediate shafts of the corresponding reduction gearboxes.

7. An outdoor garden working vehicle according to claim 6, characterized in that: The left brake assembly and right brake assembly both include brake slave cylinders installed on the corresponding drive axle assemblies. A brake disc is fixedly connected to the shaft where the left brake assembly or right brake assembly is set. When the user steps on the foot pedal assembly, the brake slave cylinder squeezes the brake disc to generate braking force.

8. An outdoor garden operation vehicle according to claim 7, characterized in that: The brake slave cylinder includes a slave cylinder hydraulic cylinder, a slave cylinder rod and a friction plate. When the foot brake pump is connected to the slave cylinder hydraulic cylinder through a hydraulic pipe and provides braking pressure, the slave cylinder rod makes the friction plate squeeze the brake disc to form braking force.

9. An outdoor garden operation vehicle according to claim 8, characterized in that: The number of cylinders of the brake slave cylinder is odd. The slave cylinder hydraulic cylinder is slidably installed on the frame or the corresponding reduction gearbox. The friction plate includes a dynamic friction plate and a static friction plate. The dynamic friction plate is fixed to the slave cylinder rod and is located on one side of the brake disc, and the static friction plate is arranged on the other side of the brake disc. When the foot brake pump provides braking pressure to the slave cylinder hydraulic cylinder, the slave cylinder rod pushes the dynamic friction plate and the static friction plate to press the brake disc tightly.

10. An outdoor gardening operation vehicle according to claim 9, characterized in that: A floating mounting bracket is fixed on the frame or the corresponding reduction gearbox, and the slave cylinder hydraulic cylinder is slidably connected to the floating mounting bracket.

11. An outdoor gardening operation vehicle according to claim 8, characterized in that: The thickness of the brake disc is 2 mm to 6 mm, the diameter of the brake disc is 60 mm to 300 mm, the hydraulic pressure range of the brake caliper is 2 Mpa to 40 Mpa, the piston stroke of the caliper cylinder rod is 0.5 mm to 20 mm, the cylinder rod diameter of the foot brake pump is 5 mm to 30 mm, the cylinder diameter of the caliper hydraulic cylinder is 5 mm to 40 mm, and the cylinder rod stroke of the foot brake pump is 5 mm to 100 mm.

12. An outdoor garden working vehicle according to claim 5, characterized in that: The left drive axle assembly and the right drive axle assembly select a two-stage reduction gearbox, and the reduction ratio between the intermediate shaft and the corresponding output shaft of the left brake assembly or the right brake assembly is set to be 1 to 50.

13. The outdoor gardening work vehicle according to claim 2, characterized in that: The brake parking assembly further includes a rotating plate and a brake spring. The rotating plate is rotatably connected to the vehicle frame. The foot pedal assembly is fixedly connected to the rotating plate. The two ends of the brake spring are respectively connected to the vehicle frame and the rotating plate. A threaded push rod is connected to the rotating plate. When the user steps on the foot pedal assembly, the rotating plate rotates and pulls the brake spring, pushing the threaded push rod to squeeze the foot brake pump and generate a braking force.

14. An outdoor gardening operation vehicle according to claim 13, characterized in that: The brake spring is configured as a brake pull spring. When the user steps on the foot pedal assembly, the rotating plate rotates and stretches the brake pull spring.

15. An outdoor garden operation vehicle according to claim 14, characterized in that: The brake parking assembly further includes a fixed bracket fixedly connected to the vehicle frame. The rotating plate is rotatably connected to the fixed bracket. The two ends of the brake pull spring are respectively connected to the fixed bracket and the rotating plate.

16. An outdoor garden working vehicle according to claim 13, characterized in that: The foot pedal assembly includes a main pedal, a sub-pedal, a hook plate, and a hook plate torsion spring. A limit rod is fixedly connected to the vehicle frame. The hook plate is rotatably connected to the main pedal. When the main pedal is stepped on by the user, the hook plate can be hooked on the limit rod to make the braking module in the parking state. The hook plate torsion spring is arranged on the rotating shaft of the hook plate to generate an elastic force on the hook plate to keep it hooked on the limit rod in the parking state. The sub-pedal is movably connected to the main pedal. When the sub-pedal is stepped on by the user, the hook plate can be disengaged from the limit rod.

17. An outdoor garden operation vehicle according to claim 16, characterized in that: The maintaining force of the hook plate torsion spring to maintain the contact between the hook plate and the limit rod is 5 N to 30 N.

18. An outdoor garden operation vehicle according to claim 16, characterized in that: The main pedal and the sub-pedal can be stepped on simultaneously or separately by a single foot.

19. An outdoor garden operation vehicle according to claim 16, characterized in that: When the main pedal is stepped on by the user, at least one of the two surfaces where the hook plate and the limit rod first come into contact is a curved surface, and when the user steps on the main pedal to make the hook plate abut against the limit rod, the hook plate can rotate until the inner side of the hook plate bypasses the limit rod and is hooked on the limit rod.

20. An outdoor gardening operation vehicle according to claim 16, characterized in that: When the sub-pedal is stepped on by the user, it moves and squeezes the hook plate, causing the hook plate to rotate away from the limit rod and disengage from the limit rod.

21. An outdoor gardening work vehicle according to claim 20, characterized in that: The maximum rotation angle of the hook plate when the user steps on the sub-pedal to drive the hook plate from the state of being hooked on the limit rod to the state of disengaging from the limit rod is 5° to 30°.

22. An outdoor garden working vehicle according to claim 20, characterized in that: The sub-pedal is rotatably connected to the main pedal. The rotation angle range of the sub-pedal when the user steps on it is 0 to 90°. A sub-pedal torsion spring is arranged at the hinge joint between the sub-pedal and the main pedal, and the sub-pedal torsion spring makes the sub-pedal maintain a state of not squeezing the hook plate when not being stepped on.

23. An outdoor gardening operation vehicle according to claim 20, characterized in that: The stepping force for the user to step on the sub-pedal to disengage the hook plate from the limit rod is 3 N to 100 N.

24. An outdoor garden working vehicle according to claim 16, characterized in that: The outdoor garden working vehicle further includes an identification module and a control system. The identification module is used to detect whether the main pedal is stepped on. The control system includes a whole-machine control module, a motor control module, and a battery management module. The whole-machine control module, the motor control module, and the battery management module are connected by signals to each other. The battery management module is signal-connected to a power supply component, and the motor control module is signal-connected to a left drive motor and a right drive motor; When the recognition module detects that the main pedal is stepped on, it controls the left drive motor and the right drive motor to stop rotating through the control system.

25. An outdoor gardening operation vehicle according to claim 24, characterized in that: The recognition module includes a microswitch arranged on the frame. A switch pressing plate is fixed on the rotating plate. The switch pressing plate presses the microswitch when the main pedal is in the natural release state; when the user steps on the main pedal to drive the rotating plate to rotate, the switch pressing plate is separated from the microswitch, and at this time, the microswitch triggers to control the left drive motor and the right drive motor to stop rotating.

26. An outdoor garden operation vehicle according to claim 1, characterized in that: An oil brake force damping adjustment mechanism is arranged at the foot brake pump, so that when the hydraulic oil in the foot brake pump is compressed to the limit, the foot pedal assembly can be continuously stepped on.

27. An outdoor gardening work vehicle according to claim 26, characterized in that: The oil brake force damping adjustment mechanism includes an oil pump bracket and a damping member. The oil pump bracket is fixed to the vehicle frame, and the damping member is connected to the foot brake pump and the oil pump bracket.

28. An outdoor gardening operation vehicle according to claim 27, characterized in that: The oil brake force damping adjustment mechanism further includes a guiding member connected to the foot brake pump. The guiding member is used to limit the foot brake pump to reciprocate only in the direction of being squeezed by the foot pedal assembly.

29. The outdoor garden working vehicle according to claim 28, wherein: The damping member is selected as a damping compression spring, and the guiding member is selected as a bolt. The bolt sequentially passes through the foot brake pump, the damping compression spring and is threadedly connected to the oil pump bracket. The damping member has an initial damping force after assembly.

30. An outdoor garden operation vehicle according to claim 16, characterized in that: When the main pedal is in the natural release state, the damping compression spring is in state 1. When the hook plate is hooked on the limiting rod, the damping compression spring is in state 2. The compression amount of the damping compression spring in state 2 is greater than that in state 1, and the difference in the compression amounts of the damping compression spring between state 2 and state 1 is 1 mm to 60 mm.

31. An outdoor garden operation vehicle according to claim 1, characterized in that, It further includes a user seat connected to the vehicle frame.

32. A lawn mower, characterized in that, Comprising: Vehicle frame; A left drive axle assembly and a right drive axle assembly. The left drive axle assembly is mechanically connected to the left drive motor and the left drive wheel to transmit the power of the left drive motor to the left drive wheel; the right drive axle assembly is mechanically connected to the right drive motor and the right drive wheel to transmit the power of the right drive motor to the right drive wheel; A mowing component arranged below the vehicle frame for cutting the vegetation on the ground; A power supply component electrically connected to the left drive motor, the right drive motor, and the mowing component for supplying power to the left drive motor, the right drive motor, and the mowing component; A braking module, including: A brake parking assembly and a foot brake pump; The brake parking assembly includes a foot pedal assembly. The foot pedal assembly is hinged to the vehicle frame and forms a lever with the foot brake pump. When the user steps on the foot pedal assembly, it triggers the foot brake pump to generate a braking force on the left drive axle assembly and the right drive axle assembly.

33. An electric outdoor garden working vehicle, characterized in that, Comprising: Vehicle frame; A left drive axle assembly and a right drive axle assembly. The left drive axle assembly is mechanically connected to the left drive motor and the left drive wheel to transmit the power of the left drive motor to the left drive wheel; the right drive axle assembly is mechanically connected to the right drive motor and the right drive wheel to transmit the power of the right drive motor to the right drive wheel; An operation component arranged below the vehicle frame for performing outdoor operations on the ground; A power supply component, electrically connected to the left drive motor, the right drive motor and the working component, and used to supply power to the left drive motor, the right drive motor and the working component; Braking module, comprising: Brake parking components, foot brake pump; The brake parking assembly includes a pedal assembly, which is hinged to the frame and forms a lever with a foot brake pump. When a user steps on the pedal assembly, the foot brake pump is triggered to generate braking force on the left drive axle assembly and the right drive axle assembly.

34. An outdoor gardening operation vehicle, characterized in that, include: Frame; A left drive axle assembly and a right drive axle assembly, wherein the left drive axle assembly is mechanically connected to the left drive motor and the left drive wheel to transmit the power of the left drive motor to the left drive wheel; and the right drive axle assembly is mechanically connected to the right drive motor and the right drive wheel to transmit the power of the right drive motor to the right drive wheel; A mowing component is arranged at the lower part of the frame and is used to produce a cutting effect on the vegetation on the ground; A power supply component, electrically connected to the left drive motor, the right drive motor and the mowing component, and used to supply power to the left drive motor, the right drive motor and the mowing component; Braking module, including brake parking assembly; The user steps on the brake parking assembly to generate braking force on the left drive axle assembly and the right drive axle assembly; The brake parking assembly includes a pedal assembly, and the pedal assembly includes a main pedal and a sub-pedal. When a user steps on the main pedal, the brake module can enter a braking state and a parking state, and when a user steps on the sub-pedal, the brake module can be released from the parking state.

35. The outdoor gardening operation vehicle according to claim 34, characterized in that: The main pedal and the auxiliary pedal can be stepped on simultaneously or separately by a single foot.

36. The outdoor gardening operation vehicle according to claim 34, wherein: The brake module also includes a foot brake pump, and the brake parking assembly also includes a rotating plate and a brake tension spring. The rotating plate is rotatably connected to the frame, and the pedal assembly is fixedly connected to the rotating plate. The two ends of the brake tension spring are respectively connected to the frame and the rotating plate. A threaded push rod is connected to the rotating plate. When the user steps on the pedal assembly, the rotating plate rotates and stretches the brake tension spring, pushing the threaded push rod to squeeze the foot brake pump and generate braking force.

37. The outdoor gardening work vehicle according to claim 36, characterized in that: The brake spring is a brake tension spring, and when the user steps on the pedal assembly, the rotating plate rotates and stretches the brake tension spring.

38. The outdoor garden working vehicle according to claim 36, characterized in that: The brake module also includes: a hydraulic pipe, a left brake assembly, and a right brake assembly; when a user steps on the brake parking assembly, the foot brake pump generates brake pressure and acts on the left brake assembly and the right brake assembly through the hydraulic pipe at the same time, generating braking force on the left drive axle assembly and the right drive axle assembly, so that the left drive wheel and the right drive wheel are braked.

39. The outdoor gardening operation vehicle according to claim 36, wherein: The pedal assembly further includes a hook plate and a hook plate torsion spring, and the frame is fixedly connected to a limit rod; the hook plate is rotatably connected to the main pedal, and the main pedal can be stepped on by a user to cause the hook plate to be hooked to the limit rod so that the brake module is in a parking state, and the hook plate torsion spring is arranged on the rotation axis of the hook plate, and is used to generate elastic force on the hook plate so that it remains hooked to the limit rod in the parking state; The auxiliary pedal is rotatably connected to the main pedal, and the hook plate can be separated from the limiting rod when stepped on by a user.

40. The outdoor gardening work vehicle according to claim 39, characterized in that: The hook plate torsion spring has a maintaining force of 5N to 30N to maintain the contact between the hook plate and the limiting rod.

41. The outdoor gardening work vehicle according to claim 39, wherein: When the main pedal is stepped on by the user, at least one of the two surfaces where the hook plate and the limit rod first come into contact is a curved surface, and stepping on the main pedal by the user to make the hook plate abut against the limit rod can cause the hook plate to rotate until the inner side of the hook plate bypasses the cylindrical surface of the limit rod and hooks on the limit rod.

42. The outdoor gardening work vehicle according to claim 41, wherein: When the auxiliary pedal is stepped on by the user, it rotates and presses the hook plate, causing the hook plate to rotate away from the limit rod and disengage from the limit rod.

43. The outdoor gardening work vehicle according to claim 42, wherein: The maximum rotation angle of the hook plate when the user steps on the auxiliary pedal to drive the hook plate from the state of hooking on the limit rod to the state of disengaging from the limit rod is 10° to 30°.

44. The outdoor gardening work vehicle according to claim 42, wherein: The angle range for the user to step on the auxiliary pedal to make it rotate is 0 to 90°.

45. The outdoor gardening operation vehicle according to claim 39, wherein: A torsion spring for the auxiliary pedal is provided at the hinge joint between the auxiliary pedal and the main pedal, and the torsion spring for the auxiliary pedal keeps the auxiliary pedal in a state of not pressing the hook plate when not stepped on.

46. The outdoor gardening work vehicle according to claim 39, characterized in that: The stepping force for the user to step on the auxiliary pedal to disengage the hook plate from the limit rod is 3N to 100N.

47. The outdoor gardening operation vehicle according to claim 36, characterized in that: The foot pedal assembly and the foot brake pump form a force-saving lever; when the user steps on the foot pedal assembly, the ratio of the input force arm to the output force arm of the force-saving lever is 1 to 20:1, and the stepping force for the user to step on the brake parking assembly to achieve braking is 20N to 400N.

48. The outdoor gardening operation vehicle according to claim 47, characterized in that: The stepping force for the user to step on the foot pedal assembly to achieve braking is 30N to 200N.

49. The outdoor gardening operation vehicle according to claim 38, characterized in that: The left drive axle assembly and the right drive axle assembly select a reduction gearbox of grade 2 or above, and the reduction gearbox includes an input shaft, an output shaft and several intermediate shafts; The left brake assembly and the right brake assembly are respectively arranged on the non-output shafts of the corresponding reduction gearboxes.

50. The outdoor gardening work vehicle according to claim 49, characterized in that: The left brake assembly and the right brake assembly are respectively arranged on the intermediate shafts of the corresponding reduction gearboxes.

51. The outdoor gardening work vehicle according to claim 50, characterized in that: The left brake assembly and the right brake assembly both include brake slave cylinders installed on the corresponding drive axle assemblies, and a brake brake disc is fixedly connected to the shaft where the left brake assembly or the right brake assembly is arranged; when the user steps on the brake parking assembly, the brake slave cylinder presses the brake brake disc to generate a braking force.

52. The outdoor gardening operation vehicle according to claim 51, characterized in that: The brake slave cylinder includes a slave cylinder hydraulic cylinder, a slave cylinder rod and a friction plate. When the foot brake pump is connected to the slave cylinder hydraulic cylinder through a hydraulic pipe and provides a braking pressure, the slave cylinder rod makes the friction plate press the brake brake disc to form a braking force.

53. The outdoor gardening work vehicle according to claim 52, characterized in that: The number of cylinders of the brake slave cylinder is odd, the slave cylinder hydraulic cylinder is slidably installed on the vehicle frame or the corresponding gear reduction box, the friction plate includes a dynamic friction plate and a static friction plate, the dynamic friction plate is fixed to the slave cylinder rod and is located on one side of the brake brake disc, the static friction plate is arranged on the other side of the brake brake disc, and when the foot brake pump provides a braking pressure to the slave cylinder hydraulic cylinder, the slave cylinder rod pushes the dynamic friction plate and the static friction plate to press the brake brake disc tightly.

54. The outdoor gardening operation vehicle according to claim 52, characterized in that: The number of cylinders of the brake slave cylinder is even, the slave cylinder hydraulic cylinder is slidably installed on the vehicle frame or the corresponding gear reduction box, two of the friction plates are fixed to the slave cylinder rod and are located on both sides of the brake brake disc, and when the foot brake pump provides a braking pressure to the slave cylinder hydraulic cylinder, the slave cylinder rod pushes the two dynamic friction plates to press the brake brake disc tightly.

55. The outdoor gardening work vehicle according to claim 53 or 54, characterized in that: A floating mounting bracket is fixed on the vehicle frame or the corresponding gear reduction box, and the slave cylinder hydraulic cylinder is slidably connected to the floating mounting bracket.

56. The outdoor gardening operation vehicle according to claim 51, wherein: The thickness of the brake disc is 2 mm to 6 mm, and the diameter of the brake disc is 60 mm to 300 mm.

57. The outdoor gardening work vehicle according to claim 51, characterized in that: The hydraulic pressure range of the brake caliper is 2 Mpa to 20 Mpa, and the piston stroke of the cylinder rod of the brake caliper is 0.5 to 10 mm.

58. The outdoor gardening work vehicle according to claim 57, characterized in that: The diameter of the cylinder rod of the foot brake pump is 10 mm to 30 mm, the diameter of the cylinder of the caliper is 20 mm to 40 mm, and the stroke of the cylinder rod of the foot brake pump is 10 mm to 60 mm.

59. The outdoor gardening operation vehicle according to claim 50, characterized in that: The reduction ratio of the intermediate shaft of the left brake assembly or the right brake assembly to the corresponding output shaft is set to 1 to 50.

60. The outdoor gardening operation vehicle according to claim 59, wherein: The left drive axle assembly and the right drive axle assembly are equipped with a two-stage reduction gearbox, and the reduction ratio of the intermediate shaft of the left brake assembly or the right brake assembly to the corresponding output shaft is set to 3 to 6.

61. The outdoor gardening operation vehicle according to claim 37, characterized in that: The braking module further includes a microswitch for detecting whether the main pedal is stepped on. When the microswitch detects that the main pedal is stepped on, it controls the left drive motor and the right drive motor to stop.

62. The outdoor gardening work vehicle according to claim 61, wherein: The microswitch is arranged on the frame. A switch pressing plate is fixed on the rotating plate. The switch pressing plate presses the microswitch in the natural release state of the main pedal; when the user steps on the main pedal to drive the rotating plate to rotate, the switch pressing plate is separated from the microswitch, and at this time the microswitch is triggered to control the left drive motor and the right drive motor to stop.

63. The outdoor garden working vehicle according to claim 61, characterized in that: A switch box is fixedly arranged on the fixed bracket, and the microswitch and the switch pressing plate are both installed in the switch box.

64. The outdoor gardening work vehicle according to claim 39, characterized in that: An oil brake force damping adjustment mechanism is arranged at the foot brake pump, so that when the hydraulic oil in the foot brake pump is compressed to the limit, the main pedal can be stepped on continuously.

65. The outdoor gardening operation vehicle according to claim 64, wherein: The oil brake force damping adjustment mechanism includes an oil pump bracket, a brake compression spring and a bolt. The oil pump bracket is fixed to the vehicle frame, and the bolt sequentially passes through the foot brake pump, the brake compression spring and is threadedly connected to the oil pump bracket.

66. The outdoor gardening work vehicle according to claim 65, characterized in that: The brake compression spring is always in a compressed state. The brake compression spring is in state 1 in the natural release state of the main pedal, and the brake compression spring is in state 2 when the hook plate is hooked on the limit rod. The compression amount of the brake compression spring in state 2 is greater than that in state 1.

67. The outdoor gardening operation vehicle according to claim 66, characterized in that: The difference in the compression amount of the brake compression spring between state 2 and state 1 is 1 mm to 60 mm.

68. The outdoor gardening operation vehicle according to claim 36, wherein: An adjusting nut is arranged between the threaded push rod and the rotating plate. The adjusting nut is rotatably connected to the rotating plate. The threaded push rod is threadedly connected to the adjusting nut, and the end of the threaded push rod away from the adjusting nut abuts against the foot brake pump.

69. A riding lawn mower, characterized in that, Including: Vehicle frame; A seat, connected to the vehicle frame for the user to sit on; A left drive axle assembly and a right drive axle assembly. The left drive axle assembly is mechanically connected to the left drive motor and the left drive wheel to transmit the power of the left drive motor to the left drive wheel; the right drive axle assembly is mechanically connected to the right drive motor and the right drive wheel to transmit the power of the right drive motor to the right drive wheel; A mowing component, arranged below the vehicle frame for cutting the vegetation on the ground; A power supply component, electrically connected to the left drive motor, the right drive motor and the mowing component for supplying power to the left drive motor, the right drive motor and the mowing component; A braking module, including a brake parking assembly; When the user steps on the brake parking assembly, a braking force is generated on the left drive axle assembly and the right drive axle assembly; The brake parking assembly includes a foot pedal assembly, and the foot pedal assembly includes a main pedal and a secondary pedal. When a user steps on the main pedal, the braking module can be brought into a braking state and a parking state, and when the user steps on the secondary pedal, the braking module can be released from the parking state.

70. A lawn mower, characterized in that, Comprising: A frame; A left drive axle assembly and a right drive axle assembly. The left drive axle assembly is mechanically connected to a left drive motor and a left drive wheel to transmit the power of the left drive motor to the left drive wheel; the right drive axle assembly is mechanically connected to a right drive motor and a right drive wheel to transmit the power of the right drive motor to the right drive wheel; An operating component, which is arranged below the frame and is used for performing outdoor operations on the ground; A power supply component, which is electrically connected to the left drive motor, the right drive motor and the operating component, and is used for supplying power to the left drive motor, the right drive motor and the operating component; A braking module, which includes a brake parking assembly; When the user steps on the brake parking assembly, a braking force is generated on the left drive axle assembly and the right drive axle assembly; The brake parking assembly includes a foot pedal assembly, and the foot pedal assembly includes a main pedal and a secondary pedal. When a user steps on the main pedal, the braking module can be brought into a braking state and a parking state, and when the user steps on the secondary pedal, the braking module can be released from the parking state.

71. An electric outdoor garden operation vehicle, characterized in that, Comprising: A frame; A left drive axle assembly and a right drive axle assembly. The left drive axle assembly is mechanically connected to a left drive motor and a left drive wheel to transmit the power of the left drive motor to the left drive wheel; the right drive axle assembly is mechanically connected to a right drive motor and a right drive wheel to transmit the power of the right drive motor to the right drive wheel; An operating component, which is arranged below the frame for performing outdoor operations on the ground; A power supply component, which is electrically connected to the left drive motor, the right drive motor and the operating component, and is used for supplying power to the left drive motor, the right drive motor and the operating component; A braking module, which includes a brake parking assembly and a foot brake pump; The brake parking assembly includes a foot pedal assembly, and when the foot pedal assembly is stepped on by the user, it squeezes the foot brake pump and generates a braking force on the left drive axle assembly and the right drive axle assembly.

72. The electric outdoor gardening vehicle according to claim 71, wherein: An oil brake force damping adjustment mechanism is arranged at the foot brake pump, and is used for enabling the foot pedal assembly to be continuously stepped on and move when the hydraulic oil in the foot brake pump is compressed to the limit.

73. The electric outdoor gardening vehicle according to claim 72, characterized in that: The oil brake force damping adjustment mechanism includes an oil pump bracket and a damping member. The oil pump bracket is fixed to the frame, and the damping member is connected to the foot brake pump and the oil pump bracket.

74. The electric outdoor gardening vehicle according to claim 73, characterized in that: The oil brake force damping adjustment mechanism further includes a guiding member connected to the foot brake pump, and the guiding member is used for restricting the foot brake pump to reciprocate only in the direction of being squeezed by the foot pedal assembly.

75. The electric outdoor gardening vehicle according to claim 74, characterized in that: The damping member is selected as a damping compression spring, and the guiding member is selected as a bolt. The bolt sequentially passes through the foot brake pump, the damping compression spring and is threadedly connected to the oil pump bracket.

76. The electric outdoor gardening vehicle according to claim 75, wherein: The damping member has an initial damping force after assembly.

77. The electric outdoor gardening vehicle according to claim 71, characterized in that: A limiting rod is fixedly connected to the frame. The foot pedal assembly includes a main pedal, a hook plate and a hook plate torsion spring. The hook plate is rotatably connected to the main pedal. When the main pedal is stepped on by the user, the hook plate can be hooked to the limiting rod to make the braking module in a parking state. The hook plate torsion spring is arranged on the rotating shaft of the hook plate and is used for generating an elastic force on the hook plate to keep it hooked to the limiting rod in the parking state.

78. The electric outdoor gardening vehicle according to claim 77, characterized in that: When the main pedal is stepped on by the user, at least one of the two surfaces where the hook plate and the limit rod come into contact first is a curved surface, and stepping on the main pedal by the user to make the hook plate abut against the limit rod can cause the hook plate to rotate until the inner side of the hook plate bypasses the limit rod and hooks on the limit rod.

79. The electric outdoor gardening vehicle according to claim 77, characterized in that: The maintaining force of the hook plate torsion spring for maintaining the contact between the hook plate and the limit rod is 5N to 30N.

80. The electric outdoor gardening vehicle according to claim 79, characterized in that: The maintaining force of the hook plate torsion spring for maintaining the contact between the hook plate and the limit rod is 7N.

81. The electric outdoor gardening vehicle according to claim 77, characterized in that: When the main pedal is in the natural release state, the damping compression spring is in state 1. When the hook plate is hooked on the limit rod, the damping compression spring is in state 2. The compression amount of the brake compression spring in state 2 is greater than that in state 1.

82. The electric outdoor gardening vehicle according to claim 80, characterized in that: When the main pedal is in the natural release state, the damping compression spring is in state 1. When the hook plate is hooked on the limit rod, the damping compression spring is in state 2. The compression amount of the brake compression spring in state 2 is greater than that in state 1; the difference in the compression amounts of the damping compression spring between state 2 and state 1 is 1mm to 60mm.

83. The electric outdoor gardening vehicle according to claim 77, wherein: The foot pedal assembly further includes a sub-pedal, and stepping on the sub-pedal by the user can release the parking state of the braking module.

84. The electric outdoor gardening vehicle according to claim 83, characterized in that: The main pedal and the sub-pedal can be stepped on simultaneously or separately by a single foot.

85. The electric outdoor gardening vehicle according to claim 83, characterized in that: The sub-pedal is movably connected to the main pedal. When the sub-pedal is stepped on by the user, it moves and presses the hook plate, causing the hook plate to rotate away from the limit rod and disengage from the limit rod.

86. The electric outdoor gardening vehicle according to claim 85, characterized in that: The maximum rotation angle of the hook plate when the user steps on the sub-pedal to drive the hook plate from the state of hooking on the limit rod to the state of disengaging from the limit rod is 5° to 30°.

87. The electric outdoor gardening vehicle according to claim 83, characterized in that: The sub-pedal is rotatably connected to the main pedal, and the rotation angle range of the sub-pedal when the user steps on it is 0 to 90°.

88. The electric outdoor gardening vehicle according to claim 85, wherein: A sub-pedal torsion spring is provided at the hinge joint between the sub-pedal and the main pedal, and the sub-pedal torsion spring causes the sub-pedal to maintain a state of not pressing the hook plate when not stepped on.

89. The electric outdoor gardening vehicle according to claim 83, wherein: The brake parking assembly further includes a rotating plate and a brake spring. The rotating plate is rotatably connected to the vehicle frame. The foot pedal assembly is fixedly connected to the rotating plate. The two ends of the brake spring are respectively connected to the vehicle frame and the rotating plate. A threaded push rod is connected to the rotating plate. When the user steps on the foot pedal assembly, the rotating plate rotates and pulls the brake spring, pushing the threaded push rod to press the foot brake pump and generate a braking force.

90. The outdoor gardening operation vehicle according to claim 82, wherein: The outdoor gardening operation vehicle further includes an identification module, a control system, and a reminder module; The identification module is used to detect whether the main pedal is stepped on; The control system includes an overall machine control module, a motor control module, and a battery management module. The overall machine control module, the motor control module, and the battery management module are signal-connected to each other. The battery management module is signal-connected to the power supply component. The motor control module is signal-connected to the left drive motor and the right drive motor; When the identification module detects that the main pedal is stepped on, it controls the left drive motor and the right drive motor to stop rotating through the control system, and sends a braking state reminder to the user through the reminder module.

91. The outdoor gardening work vehicle according to claim 90, wherein: The identification module includes a micro switch arranged on the frame. A switch pressing plate is fixed on the rotating plate. The switch pressing plate presses the micro switch when the main pedal is in the natural release state; when the user steps on the main pedal to drive the rotating plate to rotate, the switch pressing plate is separated from the micro switch, and at this time the micro switch is triggered to control the left drive motor and the right drive motor to stop rotating.

92. A ride-on outdoor gardening vehicle, characterized in that, Including: Vehicle frame; A seat, connected to the frame, for a user to sit on; A left drive axle assembly and a right drive axle assembly, wherein the left drive axle assembly is mechanically connected to the left drive motor and the left drive wheel to transmit the power of the left drive motor to the left drive wheel; and the right drive axle assembly is mechanically connected to the right drive motor and the right drive wheel to transmit the power of the right drive motor to the right drive wheel; An operating component, disposed at the lower portion of the frame and used for performing outdoor operations on the ground; A power supply component, electrically connected to the left drive motor, the right drive motor and the working component, and used to supply power to the left drive motor, the right drive motor and the working component; Braking module, including brake parking assembly; The user steps on the brake parking assembly to generate braking force on the left drive axle assembly and the right drive axle assembly; The brake parking assembly includes a pedal assembly, and the pedal assembly includes a main pedal and a sub-pedal. When a user steps on the main pedal, the brake module can enter a braking state and a parking state, and when a user steps on the sub-pedal, the brake module can be released from the parking state.

93. A zero-turn mower, characterized in that, include: Frame; A drive axle assembly, comprising a left drive axle assembly and a right drive axle assembly, wherein the left drive axle assembly and the right drive axle assembly are respectively mechanically connected to a drive motor and a drive wheel on a corresponding side to transmit power of the drive motor to the drive wheel; A mowing component is arranged at the lower part of the frame and is used to produce a cutting effect on the vegetation on the ground; A power supply component, electrically connected to the drive motor and the mowing component, and used to supply power to the drive motor and the mowing component; The drive axle assembly includes a housing and a plurality of shaft bodies; At least one of the shafts is connected with a neutral gear mechanism, which can control the drive axle assembly to be in a neutral state or a gear state. The drive axle assembly outputs the power of the drive motor to the drive wheel in the gear state, and does not output the power of the drive motor to the drive wheel in the neutral state. The plurality of shafts include: An input shaft, mechanically connected to the drive motor, the drive motor drives the input shaft to rotate; The output shaft is connected to the input shaft and the driving wheel, and is used to output the power of the driving motor to the driving wheel.

94. The zero-turn mower according to claim 93, characterized in that: The zero-turn mower also includes an identification module, a control system and a reminder module; The identification module is used to identify whether the drive axle assembly is in a neutral state; The control system includes a whole machine control module, a motor control module and a battery management module, wherein the whole machine control module, the motor control module and the battery management module are connected to each other by signals, the battery management module is connected to the power supply component by signals, and the motor control module is connected to the drive motor by signals; When the identification module detects that the drive axle assembly is in a neutral state, the recognition module sends a neutral reminder to the user through the reminder module.

95. The zero-turn mower according to claim 93, characterized in that: The neutral gear mechanism comprises an operating part and an action part which are connected to each other. The action part can put the drive axle assembly in a neutral gear state or a gear-engaging state under the action of the operating part.

96. The zero-turn mower according to claim 95, wherein: A driving gear capable of transmitting torque and sliding relative to the shaft is provided on the shaft of the neutral gear mechanism. A fixed gear is provided on the shaft adjacent to the shaft where the neutral gear mechanism is provided. The operating part can controllably drive the driving gear to slide along the shaft where it is located so that the driving gear meshes with or disengages from the fixed gear. When the driving gear meshes with the fixed gear, the drive axle assembly is in the gear engaged state. When the driving gear disengages from the fixed gear, the drive axle assembly is in the neutral state.

97. The zero-turn mower according to claim 96, wherein: The driving gear is key-connected to the corresponding shaft.

98. The zero-turn mower according to claim 97, wherein: Internal splines are provided on the inner ring of the driving gear. External splines mating with the internal splines are provided on the shaft on which the driving gear slides. The driving gear slides along the external splines, enabling the drive axle assembly to switch between the gear engaged state and the neutral state.

99. The zero-turn mower according to claim 97, characterized in that: The operating part includes a neutral shift member. When the neutral shift member slides along the corresponding shaft, it drives the driving gear to slide, causing the drive axle assembly to switch to the gear engaged state or the neutral state.

100. The zero-turn mower according to claim 99, wherein: A circle of shifting grooves is provided on the driving gear, and one end of the neutral shift member is clamped in the shifting grooves.

101. The zero-turn mower according to claim 100, wherein: The neutral shift fork is connected to a sliding rod, and the sliding rod is slidably connected to the housing.

102. The zero-turn mower according to claim 101, characterized in that: The operating part includes a sliding rod. The sliding rod penetrates the side wall of the housing and is connected to a pull rod located outside the housing. A handle for manual gripping is provided on the pull rod.

103. The zero-turn mower according to claim 102, wherein: The handle is located within the area of the outer end face of the housing in the horizontal direction and below the central plane of the housing in the vertical direction.

104. The zero-turn mower according to claim 101, characterized in that: A spring is sleeved on the sliding rod. The two ends of the spring are respectively connected to the housing and the sliding rod. The spring generates an elastic force on the sliding rod, causing it to tend to move to a state where the drive axle assembly is in the neutral or gear engaged state.

105. The zero-turn mower according to claim 102, characterized in that: A limiting plate connected to the handle is fixedly connected outside the housing. The limiting plate is used to limit the handle so that the drive axle assembly is in the neutral or gear engaged state.

106. The zero-turn mower according to claim 103, wherein: The limiting plate has two limiting grooves. When the handle is clamped in one of the limiting grooves, the drive axle assembly is in the neutral state. When the handle is clamped in the other limiting groove, the drive axle assembly is in the gear engaged state.

107. The zero-turn mower according to claim 106, characterized in that: A slideway connecting the two limiting grooves is provided on the limiting plate. The handle can move along the slideway from one limiting groove to the other. The limiting plate is provided with an anti-disengagement member to prevent the handle from disengaging from the limiting groove due to vibration. The anti-disengagement member includes a limiting protrusion provided on the side wall of the limiting groove. The handle is jointly affected by the spring and the limiting protrusion in the limiting groove and cannot directly slide to the slideway.

108. The zero-turn mower according to claim 96, characterized in that: The multiple shafts further include an intermediate shaft provided between the input shaft and the output shaft. The intermediate shaft can transmit the power of the input shaft to the output shaft. The driving gear is provided on the input shaft, and the fixed gear is provided on the intermediate shaft adjacent to the input shaft. The zero-turn mower according to claim 102, wherein: The operating part includes a handbrake and a handbrake cable. The handbrake cable is connected to the sliding rod. Controlling the handbrake to drive the handbrake cable to move can cause the sliding rod to move and enable the drive axle assembly to switch between the neutral and gear engaged states. The zero-turn mower according to claim 102, wherein: The operating part includes a control switch and an electric push rod. The electric push rod is connected to the sliding rod. Operating the control switch to make the electric push rod work drives the sliding rod to move and enables the drive axle assembly to switch between the neutral and gear engaged states.

111. The zero-turn mower according to claim 95, characterized in that: The operation part includes a control switch, and the action part includes an electromagnetic clutch. The shaft body of the electromagnetic clutch is divided into a coaxial front shaft body and a rear shaft body. The electromagnetic clutch includes two synchronizers, and the two synchronizers are respectively arranged on the front shaft body and the rear shaft body. The control switch can control the two synchronizers to abut or separate. When the two synchronizers abut, the front shaft body and the rear shaft body perform power transmission, and at this time, the drive axle assembly is in the gear engaged state; when the two synchronizers separate, the front shaft body and the rear shaft body disconnect the power transmission, and at this time, the drive axle assembly is in the neutral state.

112. An outdoor gardening work vehicle, characterized in that, Comprising: Frame; A drive axle assembly, including a left drive axle assembly and a right drive axle assembly. The left drive axle assembly and the right drive axle assembly are respectively mechanically connected to the drive motors and drive wheels on the corresponding sides to transmit the power of the drive motors to the drive wheels; An operation component, arranged under the frame and used for performing outdoor operations on the ground; A power supply component, electrically connected to the drive motors and the operation component, for supplying power to the drive motors and the operation component; The drive axle assembly includes a housing and a plurality of shaft bodies; At least one of the shaft bodies is connected with a neutral mechanism, and the neutral mechanism can controllably make the drive axle assembly in the neutral state or the gear engaged state. The drive axle assembly outputs the power of the drive motor to the drive wheels in the gear engaged state, and the drive axle assembly does not output the power of the drive motor to the drive wheels in the neutral state; The plurality of shaft bodies include: An input shaft, mechanically connected to the drive motor, and the drive motor drives the input shaft to rotate; An output shaft, connecting the input shaft and the drive wheel, for outputting the power of the drive motor to the drive wheel.

113. A riding type garden working vehicle, characterized in that, Comprising: Frame; A seat, connected to the frame and used for the user to sit on; A drive axle assembly, including a left drive axle assembly and a right drive axle assembly. The left drive axle assembly and the right drive axle assembly are respectively mechanically connected to the drive motors and drive wheels on the corresponding sides to transmit the power of the drive motors to the drive wheels; An operation component, arranged under the frame and used for performing outdoor operations on the ground; A power supply component, electrically connected to the drive motors and the operation component, for supplying power to the drive motors and the operation component; The drive axle assembly includes a housing and a plurality of shaft bodies; At least one of the shaft bodies is connected with a neutral mechanism, and the neutral mechanism can controllably make the drive axle assembly in the neutral state or the gear engaged state. The drive axle assembly outputs the power of the drive motor to the drive wheels in the gear engaged state, and the drive axle assembly does not output the power of the drive motor to the drive wheels in the neutral state; The plurality of shaft bodies include: An input shaft, mechanically connected to the drive motor, and the drive motor drives the input shaft to rotate; An output shaft, connecting the input shaft and the drive wheel, for outputting the power of the drive motor to the drive wheel.

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