Chassis height adjusting device and mower

Abstract

The utility model discloses a chassis height adjusting device and a mower, the chassis height adjusting device comprises an adjusting base, a driving assembly, a control module, a front shaft assembly, a rear shaft assembly and a rod body assembly, the front shaft assembly and the rear shaft assembly are used for bearing a mower main body, and the rod body assembly is connected with the driving assembly, the front shaft assembly and the rear shaft assembly; the driving assembly can drive the rod body assembly to drive the front shaft assembly and the rear shaft assembly to lift or lower the mower body, a trigger switch is arranged on the rod body assembly, a plurality of trigger bases matched with the trigger switch are arranged on the adjusting base, the trigger switch and the trigger bases are all connected with the control module, and in the lifting or lowering process of the mower body, the control module is connected with the control module. The trigger switch and the trigger base are selectively matched and conducted, and when the trigger switch and the trigger base are conducted, the control module controls the driving assembly to stop lifting or lowering the mower body, so that gear adjustment of the height of the mower chassis is achieved, and time and labor are saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lawn mowers, and particularly relates to a chassis height adjusting device and a lawn mower. BACKGROUND

[0002] A lawn mower is a commonly used mechanical garden tool for trimming lawns and grasslands, which can help people quickly and efficiently complete the mowing work. The lawn mower is mainly composed of a chassis, an engine, a walking mechanism, a cutting part, an operating device and other components. In order to make the lawn mower have different mowing heights, the existing lawn mower is generally equipped with a chassis height adjusting device, which adjusts the height of the cutting part by adjusting the height of the chassis to drive the cutting part to move up and down, so as to meet the mowing requirements of different lawns.

[0003] However, the chassis height adjusting device of the existing lawn mower has the following problems: 1. The connecting rod assembly in the chassis height adjusting device has a complex structure, the manufacturing cost is relatively high, and the chassis height adjusting device is prone to failure during use; 2. The chassis height adjusting device is manually adjusted, and the user needs to manually operate the adjusting part to adjust the height of the chassis. The adjusting method is stepless adjustment, and the chassis height cannot be quickly and accurately adjusted to a certain specific height during the adjusting process, which is time-consuming and laborious. SUMMARY

[0004] One object of the present application is to provide a chassis height adjusting device with simple structure and convenient adjusting operation.

[0005] Another object of the present application is to provide a lawn mower.

[0006] In order to achieve the above objects, the technical scheme adopted by the present application is as follows: a chassis height adjusting device, comprising:

[0007] an adjusting base;

[0008] a driving assembly, which is arranged on the adjusting base and connected with a control module, and the control module is adapted to control the driving assembly to start and stop;

[0009] a front axle assembly and a rear axle assembly for supporting the main body of the lawn mower, and the front axle assembly and the rear axle assembly can be operated to lift or lower the main body of the lawn mower;

[0010] and a rod body assembly connected with the driving assembly, the front axle assembly and the rear axle assembly respectively, the driving assembly can drive the rod body assembly to drive the front axle assembly and the rear axle assembly to lift or lower the mower body, the rod body assembly is provided with a trigger switch, the adjusting base is provided with a plurality of trigger bases matched with the trigger switch, the trigger switch and each trigger base are connected with the control module, during the lifting or lowering of the mower body, the trigger switch is adapted to selectively cooperate with the trigger base to be turned on, when the trigger switch is turned on with the trigger base, the control module controls the driving assembly to stop lifting or lowering the mower body.

[0011] As a preferred, the trigger bases are arranged in two rows in staggered arrangement, and the trigger bases in each row are arranged at equal intervals on the adjusting base.

[0012] As another preferred, the trigger switch includes two trigger tabs, the two trigger tabs are arranged opposite to each other, and the two trigger tabs correspond to a row of trigger bases respectively, the trigger base includes two electrode tabs arranged opposite to each other, the two electrode tabs are arranged at intervals to form a trigger channel, the trigger tabs are adapted to slide into the trigger channel to contact the electrode tabs to turn on the trigger switch and the trigger base.

[0013] Further preferably, the two electrode tabs are both arc-shaped so that the width of the two ends of the trigger channel is greater than the width of the middle, and the width of the two ends of the trigger channel is greater than the thickness of the trigger tab, and the width of the middle of the trigger channel is not greater than the thickness of the trigger tab.

[0014] Further, the trigger switch includes two trigger tabs, the two trigger tabs are arranged opposite to each other, and the two trigger tabs correspond to a row of trigger bases respectively, the trigger base includes one electrode tab, the trigger tabs are adapted to slide above the electrode tab to contact the electrode tab to turn on the trigger switch and the trigger base.

[0015] Further, the rod body assembly includes a front support rod and a rear support rod hinged to each other, the bottom end of the front support rod is connected to the driving assembly, the bottom end of the rear support rod is hinged to the adjusting base, the front support rod is in transmission connection with the front axle assembly and the rear axle assembly, and the driving assembly can drive the front support rod to be close to or away from the rear support rod to drive the front axle assembly and the rear axle assembly to lift or lower the mower body.

[0016] Further, the driving assembly comprises a driving motor, a driven screw and a sliding rod, the driven screw is in transmission connection with the driving motor, the sliding rod is in screw fit on the driven screw, the side wall of the adjusting base is provided with a limiting groove matched with the sliding rod, and the two ends of the sliding rod are in rotation connection with the bottom end of the front support rod through the limiting groove.

[0017] Further, the front support rod and the front axle assembly are connected through a first connecting rod, the front support rod and the rear axle assembly are connected through a second connecting rod, the middle part of the front support rod is provided with a hinged rod, one end of the first connecting rod and the second connecting rod is respectively hinged with the hinged rod, the other end of the first connecting rod is hinged with the front axle assembly, and the other end of the second connecting rod is hinged with the rear axle assembly.

[0018] Further, the front axle assembly comprises a front axle and a front axle connecting piece, the front axle comprises first shaft bodies connected with front wheels at two ends and a second shaft body arranged between the two first shaft bodies for supporting the mower main body, the first shaft bodies and the second shaft body are arranged in a staggered manner so that the front axle as a whole has a crankshaft shape, the front axle connecting piece is arranged on the second shaft body, the first connecting rod is hinged with the front axle connecting piece, and thus the first connecting rod can pull the front axle to rotate to lift or lower the mower main body; the rear axle assembly comprises a rear axle for supporting the mower main body and a rear axle connecting piece connected with rear wheels, the rear axle is arranged on the rear axle connecting piece, the second connecting rod is hinged with the rear axle connecting piece, and the connecting points of the rear axle, the second connecting rod and the rear wheels on the rear axle connecting piece are arranged in a triangular shape, and thus the second connecting rod can pull the rear axle connecting piece to rotate to lift or lower the mower main body.

[0019] The application also provides a mower comprising the above-mentioned chassis height adjusting device.

[0020] Compared with the prior art, the application has the following beneficial effects:

[0021] The chassis height adjusting device provided by the application drives the front axle assembly and the rear axle assembly to lift or lower the mower main body through the driving assembly, has a simple overall structure, can simultaneously adjust the front axle and the rear axle of the mower, keeps the chassis height of the mower always horizontal during the adjustment process, and avoids the height difference between the front axle and the rear axle; the trigger switch is arranged on the rod body assembly, the adjusting base is provided with a plurality of matched trigger bases, the trigger bases are arranged on the movement track of the rod body assembly in a spaced manner, and thus the trigger switch is adapted to cooperate with the trigger bases to be conductive during the lifting or lowering process of the mower main body, the driving assembly is controlled to stop by the control module when the trigger switch cooperates with the trigger bases to be conductive, the lifting or lowering of the mower main body is ended, and thus the gear adjustment of the chassis height of the mower is realized. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the chassis height adjustment device of this application.

[0023] Figure 2 This is a schematic diagram of the adjusting base, drive assembly, and rod assembly in the chassis height adjusting device of this application.

[0024] Figure 3 This is a schematic diagram of the trigger switch inside the adjusting base and the trigger base in the chassis height adjusting device of this application.

[0025] Figure 4 This is a schematic diagram of the front axle assembly in the chassis height adjustment device of this application.

[0026] Figure 5 This is a schematic diagram of the rear axle assembly in the chassis height adjustment device of this application.

[0027] Figure 6 This is a schematic diagram of another embodiment of the trigger switch in the chassis height adjustment device of this application.

[0028] In the diagram: 100, Adjustment base; 110, Limiting groove; 200, Drive assembly; 210, Drive motor; 220, Driven screw; 230, Sliding rod; 300, Front axle assembly; 310, Front wheel axle; 311, First shaft; 312, Second shaft; 320, Front axle connector; 400, Rear axle assembly; 410, Rear wheel axle; 420, Rear axle connector; 500, Rod assembly; 510, Front support rod; 520, Rear support rod; 530, First connecting rod; 540, Second connecting rod; 550, Hinge shaft; 600, Trigger switch; 610, Trigger insert; 620, Trigger spring; 700, Trigger base; 710, Electrode plate. Detailed Implementation

[0029] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0030] In the description of the present application, it should be noted that for the orientation words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0031] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily indicate or imply a specific order or sequence.

[0032] The terms "include" and "have" and any variations thereof in the specification and claims of the present application are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] As shown in Figures 1-5 The present application provides a chassis height adjusting device, which comprises an adjusting base 100, a driving assembly 200, a control module (not shown in the figure), a front axle assembly 300, a rear axle assembly 400 and a rod body assembly 500. The front axle assembly 300 is connected with the front wheels, the rear axle assembly 400 is connected with the rear wheels, the front axle assembly 300 and the rear axle assembly 400 are adapted to support the mower body, the driving assembly 200 is arranged on the adjusting base 100 and is connected with the control module circuit, the rod body assembly 500 is connected with the driving assembly 200, the front axle assembly 300 and the rear axle assembly 400, the user can press the adjusting button to make the control module control the driving assembly 200 to work, the driving assembly 200 drives the rod body assembly 500 to slide to drive the front axle assembly 300 and the rear axle assembly 400 to lift or lower the mower body, so as to realize the adjustment of the chassis height of the mower.

[0034] Further, the rod body assembly 500 is further provided with a trigger switch 600, and the adjusting base 100 is provided with a plurality of trigger bases 700 matched with the trigger switch 600, and each trigger base 700 is arranged on the movement track of the rod body assembly 500 at intervals, so that the trigger switch 600 selectively matches with each trigger base 700 in the process of sliding of the rod body assembly 500 driven by the driving assembly 200. When the trigger switch 600 matches with the trigger base 700, the trigger switch 600 and the trigger base 700 are conductive to send an electric signal to the control module, and the control module controls the driving assembly 200 to stop when receiving the electric signal, so as to stop the adjustment of the height of the mower chassis. That is to say, the user presses the adjusting button each time, and the driving assembly 200 drives the rod body assembly 500 to move a fixed stroke, and the length of the stroke is the interval between two adjacent trigger bases 700. Since the rod body assembly 500 only moves a fixed stroke each time, the rod body assembly 500 can only drive the front axle assembly 300 and the rear axle assembly 400 to lift or lower the mower body by a fixed height, so as to realize the electric gear adjustment of the height of the mower chassis, saving time and effort.

[0035] As Figures 2-3As shown, the driving assembly 200 comprises a driving motor 210, a driven screw 220 and a sliding rod 230. The driving motor 210 is arranged at the front end of the adjusting base 100 and is connected with the control module circuit. The driven screw 220 is drivingly connected with the output shaft of the driving motor 210. The driving motor 210 can drive the driven screw 220 to rotate along its own axis. The sliding rod 230 is threadedly arranged on the driven screw 220. The side wall of the adjusting base 100 is provided with a limiting groove 110 matched with the sliding rod 230. Both ends of the sliding rod 230 are arranged in the limiting groove 110. Thus, the driven screw 220 can be rotated to drive the sliding rod 230 to slide along the limiting groove 110.

[0036] Further, as shown in FIG. 1, the lawn mower body 100 comprises a front axle assembly 300, a rear axle assembly 400 and a rod body assembly 500. The front axle assembly 300 comprises a front axle 310 and a front wheel 320. The front axle 310 is arranged on the front end of the adjusting base 100. The front wheel 320 is arranged on the front end of the front axle 310. The rear axle assembly 400 comprises a rear axle 410 and a rear wheel 420. The rear axle 410 is arranged on the rear end of the adjusting base 100. The rear wheel 420 is arranged on the rear end of the rear axle 410. The rod body assembly 500 comprises a front support rod 510 and a rear support rod 520. The top end of the front support rod 510 is hingedly connected with the top end of the rear support rod 520. The bottom end of the front support rod 510 is hingedly connected with the sliding rod 230. The bottom end of the rear support rod 520 is hingedly connected with the adjusting base 100. The front support rod 510 and the rear support rod 520 are in V-shaped structure. Figures 4-5As shown, the front axle assembly 300 includes a front axle 310 and a front axle connecting piece 320, the front axle 310 includes two first shafts 311 connected with front wheels and a second shaft 312 arranged between the two first shafts 311 for supporting the mower body, the first shaft 311 and the second shaft 312 are arranged in staggered mode, so that the front axle 310 as a whole is in the shape of a crankshaft, the front axle connecting piece 320 is fixedly arranged on the second shaft 312, the first connecting rod 530 is hinged to the front axle connecting piece 320, and then the first connecting rod 530 can be moved forward and backward under the driving of the front support rod 510 to rotate the front axle 310 to lift or lower the ride height of the mower. The rear axle assembly 400 includes a rear axle 410 for supporting the mower body and a rear axle connecting piece 420 connected with rear wheels, the rear axle 410 is arranged on the rear axle connecting piece 420, the second connecting rod 540 is hinged to the rear axle connecting piece 420, and the rear axle 410, the second connecting rod 540 and the connecting point of the rear wheels on the rear axle connecting piece 420 are arranged in a triangular shape, and then the second connecting rod 540 can be moved forward and backward under the driving of the front support rod 510 to rotate the rear axle connecting piece 420, and the rotation of the rear axle connecting piece 420 can lift or lower the ride height of the mower.

[0037] As Figure 3 shown, the trigger bases 700 are arranged in two staggered rows, and each row of trigger bases 700 is arranged on the adjusting base 100 at equal intervals. Due to the limited internal space of the mower, the length of the adjusting base 100 will be limited, and the trigger base 700 itself also has a certain length size. If the trigger bases 700 are arranged in one row at intervals, the interval between the two trigger bases 700 will be relatively far, and the adjusting height of the mower ride height each time is related to the interval between the two trigger bases 700, so it will cause the span between the adjacent two gears of the mower ride height adjustment to be large, and the practicability is poor. In the ride height adjustment device of the present application, the trigger bases 700 are arranged in two staggered rows, which can reduce the interval between the two trigger bases 700, thereby reducing the span between the two gears, and can increase the number of gears, so that the mower has multiple different mowing heights to meet different needs.

[0038] Further, the trigger switch 600 is arranged at the bottom end of the front support rod 510, the trigger switch 600 comprises two trigger tabs 610 arranged opposite to each other, and the two trigger tabs 610 correspond to a row of trigger bases 700 respectively, the trigger base 700 comprises two electrode tabs 710 arranged opposite to each other, the two electrode tabs 710 are arranged in a spaced manner to form a trigger channel therebetween, the trigger switch 600 can slide with the front support rod 510, so that the trigger tab 610 slides into the trigger channel and contacts the two electrode tabs 710 to turn on the trigger switch 600 and the trigger base 700, since the trigger base 700 is arranged in a staggered manner, when the trigger switch 600 is turned on with the trigger base 700, only one of the two trigger tabs 610 on the trigger switch 600 contacts the two electrode tabs 710 on the trigger base 700. Preferably, the two electrode tabs 710 are in an arc shape, so that the width of the two ends of the trigger channel is greater than the width of the middle, and the width of the two ends of the trigger channel is greater than the thickness of the trigger tab 610, and the width of the middle of the trigger channel is less than the thickness of the trigger tab 610, so as to ensure that the trigger tab 610 can smoothly slide in and out of the trigger channel and ensure that the trigger tab 610 can be in contact with the electrode tab 710 to turn on.

[0039] Specifically, when the user presses the adjustment button to send a signal to raise or lower the height of the chassis, the control module controls the driving motor 210 to work, the driving motor 210 drives the driven screw 220 to rotate, so that the sliding rod 230 drives the bottom end of the front support rod 510 and the trigger switch 600 to slide forward and backward, the front support rod 510 slides forward and backward and further drives the front axle assembly 300 and the rear axle assembly 400 to lift or lower the lawn mower body through the first connecting rod 530 and the second connecting rod 540, until the trigger switch 600 slides from one trigger base 700 to the adjacent another trigger base 700, the trigger tab 610 contacts the electrode tab 710 to turn on and sends an electrical signal to the control module, the control module controls the driving motor 210 to stop working after receiving the electrical signal, the front axle assembly 300 and the rear axle assembly 400 stop lifting or lowering the lawn mower body, the front support rod 510 slides a fixed stroke each time, and the front axle assembly 300 and the rear axle assembly 400 also lift or lower the lawn mower body by a fixed height.

[0040] In other embodiments, as Figure 6As shown, the trigger switch 600 includes two trigger springs 620 corresponding to two rows of trigger bases 700 respectively, the trigger bases 700 include an electrode sheet 710, the trigger switch 600 can slide with the front support rod 510, so that the trigger springs 620 slide to contact the electrode sheet 710 to turn on the trigger switch 600 and the trigger base 700, since the trigger bases 700 are arranged in staggered rows, when the trigger switch 600 is turned on with the trigger base 700, only one of the two trigger springs 620 on the trigger switch 600 contacts the electrode sheet 710 on the trigger base 700. It is worth mentioning that the trigger bases 700 can also be arranged side by side in rows, that is, when the trigger switch 600 is turned on with the trigger base 700, the two trigger springs 620 on the trigger switch 600 contact the electrode sheet 710 on the two trigger bases 700 respectively at the same time.

[0041] The application also provides a mower comprising the chassis height adjusting device.

[0042] The above describes the basic principles, main features and advantages of the application. Those skilled in the art should understand that the application is not limited to the above-mentioned embodiments, the above-mentioned embodiments and descriptions in the specification are only the principles of the application, and various changes and improvements can be made without departing from the spirit and scope of the application, and these changes and improvements all fall within the scope of the claimed application. The scope of protection claimed by the application is defined by the appended claims and their equivalents.

Claims

1. A chassis height adjustment device, characterized in that, include: Adjustable base; A drive assembly is disposed on the adjustment base and connected to a control module, the control module being adapted to control the start and stop of the drive assembly; The front axle assembly and the rear axle assembly are used to support the main body of the lawnmower, and the front axle assembly and the rear axle assembly can be operated to raise or lower the main body of the lawnmower. The system includes a pole assembly connected to the drive assembly, the front axle assembly, and the rear axle assembly. The drive assembly can drive the pole assembly to raise or lower the lawnmower body. A trigger switch is provided on the pole assembly, and multiple trigger bases matching the trigger switch are provided on the adjustment base. The trigger switch and each trigger base are connected to the control module. During the raising or lowering of the lawnmower body, the trigger switch is adapted to selectively engage with one of the trigger bases. When the trigger switch engages with the trigger base, the control module controls the drive assembly to stop raising or lowering the lawnmower body.

2. The chassis height adjustment device as described in claim 1, characterized in that, The trigger bases are arranged in two staggered columns, with each column of trigger bases being equally spaced on the adjustment base.

3. The chassis height adjustment device as described in claim 2, characterized in that, The trigger switch includes two trigger inserts arranged opposite each other, and each trigger insert corresponds to a row of trigger bases. The trigger base includes two oppositely arranged electrode plates, which are spaced apart to form a trigger channel. The trigger inserts are adapted to slide into the trigger channel and contact the electrode plates to conduct the trigger switch and the trigger base.

4. The chassis height adjustment device as described in claim 3, characterized in that, Both electrode plates are arc-shaped so that the width at both ends of the trigger channel is greater than the width in the middle, and the width at both ends of the trigger channel is greater than the thickness of the trigger insert, while the width in the middle of the trigger channel is not greater than the thickness of the trigger insert.

5. The chassis height adjustment device as described in claim 2, characterized in that, The trigger switch includes two trigger springs arranged opposite each other, and each trigger spring corresponds to a row of trigger bases. Each trigger base includes an electrode plate, and the trigger springs are adapted to slide above the electrode plate and contact the electrode plate to conduct electricity between the trigger switch and the trigger base.

6. The chassis height adjustment device as described in claim 2, characterized in that, The rod assembly includes a front support rod and a rear support rod that are hinged to each other. The bottom end of the front support rod is connected to the drive assembly, and the bottom end of the rear support rod is hinged to the adjustment base. The front support rod is driven to the front axle assembly and the rear axle assembly. The drive assembly can drive the front support rod to move closer to or further away from the rear support rod to raise or lower the lawnmower body by the front axle assembly and the rear axle assembly.

7. The chassis height adjustment device as described in claim 6, characterized in that, The drive assembly includes a drive motor, a driven screw, and a sliding rod. The driven screw is driven to the drive motor. The sliding rod is threaded onto the driven screw. The side wall of the adjusting base is provided with a limiting groove that matches the sliding rod. The two ends of the sliding rod pass through the limiting groove and are rotatably connected to the bottom end of the front support rod.

8. The chassis height adjustment device as described in claim 7, characterized in that, The front strut and the front axle assembly are connected by a first link, and the front strut and the rear axle assembly are connected by a second link. A hinge rod is provided in the middle of the front strut. One end of the first link and the second link are respectively hinged to the hinge rod, the other end of the first link is hinged to the front axle assembly, and the other end of the second link is hinged to the rear axle assembly.

9. The chassis height adjustment device as described in claim 8, characterized in that, The front axle assembly includes a front wheel axle and a front axle connector. The front wheel axle includes a first axle body connected to the front wheel at both ends and a second axle body disposed between the two first axle bodies for supporting the lawnmower body. The first axle body and the second axle body are offset so that the front wheel axle body is generally crankshaft-shaped. The front axle connector is disposed on the second axle body. The first connecting rod is hinged to the front axle connector, so that the first connecting rod can pull the front wheel axle to rotate and raise or lower the lawnmower body. The rear axle assembly includes a rear wheel axle for supporting the lawnmower body and a rear axle connector connected to the rear wheel. The rear wheel axle is disposed on the rear axle connector. The second connecting rod is hinged to the rear axle connector. The connection points of the rear wheel axle, the second connecting rod, and the rear wheel on the rear axle connector are arranged in a triangular pattern, so that the second connecting rod can pull the rear axle connector to rotate and raise or lower the lawnmower body.

10. A lawnmower, characterized in that, Includes the chassis height adjustment device as described in any one of claims 1-9.

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