CN214545675U - Height-adjusting mechanism and mowing device - Google Patents

Abstract

The utility model relates to a heightening mechanism and grass cutting device. A height adjustment mechanism capable of adjusting the height of a target member, comprising: a first operation panel; a second operation panel; when the first operation plate moves to a first position, the first operation plate can be connected with the target component and drive the target component to move so as to raise the height of the target component, and when the second operation plate moves to a second position, the second operation plate can be connected with the target component and drive the target component to move so as to lower the height of the target component. The mowing device comprises the height-adjusting mechanism, and the target component is a blade. The height adjusting mechanism is simple in structure, manufacturing cost can be reduced to a certain extent, and difficulty in follow-up maintenance and disassembly can be reduced.

Description

Height-adjusting mechanism and mowing device

Technical Field

The utility model relates to a lawn mower technical field especially relates to an increase mechanism and grass cutting device.

Background

With the continuous development of economy, people have higher and higher requirements on urban construction planning. In urban construction planning, lawn greenbelts are usually planted at the road or in parks for the purpose of beautifying the environment and purifying the air. After planting, the plants are required to be trimmed and cut regularly to keep the plants in a good growing state. In order to improve the cutting efficiency, a mowing device is generally used for cutting. The lawn growth heights of different areas are usually inconsistent, so that a common mowing device is provided with a height adjusting mechanism, and the height of a blade is adjusted through the height adjusting mechanism so as to be suitable for lawns with different heights.

However, in the related art, the height adjusting mechanism in some grass cutting devices is complicated in structure, so that the manufacturing cost is high, and the subsequent maintenance and disassembly are troublesome.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model provides a heightening mechanism, its structure is simpler, can reduce manufacturing cost to a certain extent, and can reduce the degree of difficulty that follow-up maintenance was dismantled.

A height adjustment mechanism capable of adjusting the height of a target member, comprising:

a first operation panel;

a second operation panel;

when the first operation plate moves to a first position, the first operation plate can be connected with the target component and drive the target component to move so as to raise the height of the target component, and when the second operation plate moves to a second position, the second operation plate can be connected with the target component and drive the target component to move so as to lower the height of the target component.

In one embodiment, the height-adjusting mechanism further includes a transmission assembly, the first operation board, the second operation board, and the target component are all connected to the transmission assembly, the first operation board can drive the target component to move through the transmission assembly to raise the height of the target component, and the second operation board can drive the target component to move through the transmission assembly to lower the height of the target component.

In one embodiment, the height adjusting mechanism further comprises an adjusting wheel, the adjusting wheel is connected with the transmission assembly, when the first operating plate moves to a first position, the adjusting wheel can be connected with the adjusting wheel and can be driven to rotate along a first direction, when the second operating plate moves to a second position, the adjusting wheel can be connected with the adjusting wheel and can be driven to rotate along a second direction, and the second direction is opposite to the first direction.

In one embodiment, the height adjusting mechanism further comprises an operating panel resetting piece, the operating panel resetting piece is connected with both the first operating panel and the second operating panel, and the operating panel resetting piece drives the first operating panel and/or the second operating panel to reset.

In one embodiment, the adjusting wheel includes a first adjusting portion and a second adjusting portion, and is connectable with the first adjusting portion when the first operating plate is moved to the first position and is connectable with the second adjusting portion when the second operating plate is moved to the second position; the first adjusting portion comprises a first tooth groove, the first operating plate comprises a first poking piece, and when the first operating plate moves to the first position, the first poking piece can be clamped into the first tooth groove; the second adjusting portion comprises a second tooth groove, the second operating plate comprises a second poking piece, and when the second operating plate moves to the second position, the second poking piece can be clamped into the second tooth groove.

In one embodiment, the first operating plate further comprises a first operating plate main body and a first toggle piece resetting piece, and the first toggle piece and the first operating plate main body are connected through the first toggle piece resetting piece; the second operation panel also comprises a second operation panel main body and a second toggle piece resetting piece, and the second toggle piece is connected with the second operation panel main body through the second toggle piece resetting piece.

In one embodiment, the position of the target member is locked when the first or second operation plate is separated from the adjustment wheel.

In one embodiment, the height-adjusting mechanism further comprises a boss, a self-locking piece and a connecting piece, the connecting piece is connected with the target component, the self-locking piece locks the connecting piece on the boss, and when the adjusting wheel rotates, the self-locking piece can be unlocked from locking the connecting piece.

In one of them embodiment, the auto-lock spare is the torsional spring, the torsional spring cover is located on the boss to support and hold in the boss, when the regulating wheel rotates, the torsional spring warp, so that the torsional spring with there is the clearance between the boss, the torsional spring can be along with the regulating wheel rotates. Preferably, the torsion spring includes a first bending end and a second bending end, an accommodating space is defined between the first bending end and the second bending end, the connecting member extends into the accommodating space, when the adjusting wheel rotates, the adjusting wheel abuts against the outer side of the first bending end or the outer side of the second bending end, and the inner side of the first bending end or the inner side of the second bending end abuts against the connecting member. Preferably, the adjusting wheel comprises an opening and a pushing plate, the two sides of the opening are respectively provided with one pushing plate, the first bending end and the second bending end extend out of the opening, and when the adjusting wheel rotates, the pushing plate abuts against the first bending end or the second bending end.

The height adjusting mechanism is provided with a first operating plate, a second operating plate and an adjusting wheel, the adjusting wheel is connected with the target component, and the first operating plate and the second operating plate can be trampled by an operator. When the first operating plate is trampled and moves to a first position, the first operating plate is connected with the adjusting wheel, and when the first operating plate is continuously trampled, the first operating plate drives the adjusting wheel to rotate along a first direction and drives the target part to move so as to raise the height; when the second operation plate is trampled and moves to the second position, the second operation plate is connected with the adjusting wheel, and when the second operation plate is continuously trampled, the second operation plate drives the adjusting wheel to rotate along the second direction and drives the target part to move so as to reduce the height. In the structure, the two operation plates are arranged, the target component is respectively lifted and lowered through the two operation plates, the height adjustment and the lowering adjustment are relatively independent, and compared with conventional structures such as the height adjustment and the lowering adjustment which are realized through one operation plate simultaneously, the structure can ensure that the connection structure between each component is simpler, the manufacturing cost can be reduced to a certain extent, and the difficulty is lower when the follow-up maintenance is disassembled due to the simpler structure.

The utility model provides a grass cutting device, the structure of the mechanism of wherein increaseing is simpler, can reduce grass cutting device's manufacturing cost to a certain extent, and can reduce the degree of difficulty that follow-up maintenance was dismantled.

The mowing device comprises the height-adjusting mechanism, and the target component is a blade.

According to the mowing device, the heightening mechanism is provided with the first operating plate, the second operating plate and the adjusting wheel, the adjusting wheel is connected with the blade, and the first operating plate and the second operating plate can be trampled by an operator. When the first operating plate is trampled and moves to a first position, the first operating plate is connected with the adjusting wheel, and when the first operating plate is continuously trampled, the first operating plate drives the adjusting wheel to rotate along a first direction and drives the blade to move so as to raise the height; when the second operation plate is trampled and moves to the second position, the second operation plate is connected with the adjusting wheel, and when the second operation plate is continuously trampled, the second operation plate drives the adjusting wheel to rotate along the second direction and drives the blade to move so as to reduce the height. In the structure, the two operation plates are arranged, the blades are respectively lifted and lowered through the two operation plates, the height adjustment and the lowering adjustment are relatively independent, and compared with conventional structures such as height adjustment and lowering adjustment which are realized through one operation plate simultaneously, the connecting structure between all parts is simpler, the manufacturing cost of the mowing device can be reduced to a certain extent, and the difficulty is lower during subsequent maintenance and disassembly due to the simpler structure.

Drawings

Fig. 1 is a schematic structural view of a mowing device according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion of the mower of FIG. 1;

FIG. 3 is a schematic view of another perspective of a portion of the construction of the mowing device of FIG. 1;

FIG. 4 is a schematic view of an elevation mechanism of the mowing device of FIG. 1;

FIG. 5 is an exploded view of the height adjustment mechanism of the mowing device of FIG. 5;

FIG. 6 is a schematic view of a portion of the height adjustment mechanism of FIG. 5;

FIG. 7 is a schematic view of another perspective of the portion of the height adjustment mechanism of FIG. 5;

FIG. 8 is a cross-sectional view of the height adjustment mechanism of FIG. 5;

fig. 9 is a schematic view of a portion of the height adjustment mechanism of fig. 5.

Reference numerals:

the first operating panel 100, the first operating panel body 110, the first fixed shaft 111, the first finger 120, the first abutting surface 121, and the first finger elastic member 130;

the second operating panel 200, the second operating panel body 210, the second fixed shaft 211, the second pusher dog 220, the second abutting surface 221, and the second pusher dog elastic member 230;

the adjusting wheel 300, the first adjusting part 310, the first adjusting tooth 311, the first inclined surface 3111, the first tooth socket 312, the second adjusting part 320, the second adjusting tooth 321, the second inclined surface 3211, the second tooth socket 322, the convex ring 330, the first pushing plate 331, the second pushing plate 332 and the opening 333;

the adjusting wheel shell 400, the first notch 410, the second notch 420, the third notch 430 and the pointer 440;

the operation plate connecting piece 510, the operation plate connecting piece main body 511, a first limit plate 5111, a second limit plate 5112, a boss 512, a first shaft 513, a second shaft 514 and a first elastic piece 520;

a self-locking member 610, a first bent end 611, a second bent end 612, a winding portion 613, a receiving space 614, a connecting member 620, a connecting member main body 621, and an extension portion 622;

the transmission assembly 700, the third shaft 710, the rotating member 720, the scale 721, the cam 730 and the first connecting rod 740;

body 800, blade 810, fourth shaft 820, baffle 830;

a second elastic member 910, a second link 920, a third link 930, a fourth link 940, and a fifth link 950;

collecting box 1010, frame 1020, walking wheel 1030.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 3, a schematic structural diagram (parts omitted) of the grass cutting device in an embodiment of the present invention, a schematic partial structural diagram of the grass cutting device in fig. 1, and a schematic view of another perspective view of a partial structure of the grass cutting device in fig. 1 are respectively shown. The utility model discloses a grass cutting device that embodiment provided includes parts such as frame 1020 and organism 800, and organism 800 is connected with frame 1020. The lawn mowing device can be used for cutting and trimming lawn greenbelts and the like.

Four corners of the frame 1020 are connected with a travelling wheel 1030 respectively, and the mowing device moves through the travelling wheel 1030. Preferably, the road wheels 1030 are universal wheels, so that the flexibility of the mowing device during walking is improved, and the mowing device is easier to turn. A push rod (not shown) is further connected to the frame 1020, and an operator can move the mowing device to a position to be cut by pushing the push rod.

The bottom of the body 800 is provided with two blades 810. The motor inside the body 800 can drive the blade 810 to rotate, and when the mowing device moves, the rotating blade 810 can cut and trim the lawn. Specifically, the motor may drive the blade 810 to rotate via a belt drive, a gear drive, or the like. The number of blades 810 may also be one, or more than two.

Preferably, a collection box 1010 is connected to the rear of the frame 1020, and grass cut by the blade 810 is introduced into the collection box 1010 to be collected due to the air flow generated by the rotation of the blade 810. After the cutting is finished, the collected grass is poured out. Therefore, cutting and collection can be completed simultaneously, and efficiency is high. In one embodiment of the invention, the collection bin 1010 is preferably provided with a suction fan or the like, which draws the cut grass into the collection bin 1010 for temporary storage when the blade 810 cuts.

Preferably, the collection chamber 1010 is removably connected to the frame 1020, for example, by a snap fit. So, can pull down collecting box 1010 and empty, make and empty more thoroughly, and at the in-process of mowing, if a collecting box 1010 fills up the back, be convenient for pull down it and change another empty collecting box 1010.

When the operator pushes the mowing device forward, the mowing device is positioned behind the collecting box 1010. As the blade 810 rotates, it may hit some of the stones on the ground, which may fly rearwardly and injure the operator. Therefore, preferably, a baffle 830 is further disposed below the tail of the machine body 800, and the baffle 830 can block the stones to prevent the stones from accidentally injuring the operator.

Generally, the lawn growth heights of different areas are different, so when the lawn with different heights is cut, the height of the blade 810 needs to be adjusted through an adjusting mechanism, so that the blade can be better adapted to the lawn height.

Specifically, the height adjustment of the blade 810 is achieved by adjusting the height of the body 800. The frame 1020 is fixedly connected with an operation panel connector 510, and the first operation panel 100 and the second operation panel 200 are both connected with the operation panel connector 510. When the operator steps on the first operation plate 100 to the first position, the first operation plate can be connected with or abutted against the machine body 800, and when the operator continues to move, the height of the machine body 800 can be increased, so that the height of the blade 810 is increased; when the second operation plate 200 is stepped to the second position, it can be connected to or abutted against the body 800, and when it continues to move, the height of the body 800 can be lowered, and the height of the blade 810 can be lowered.

Further, the first operating panel 100 and the second operating panel 200 are connected to the machine body 800 through the transmission assembly 700, and the movement of the first operating panel 100 and the second operating panel 200 is transmitted to the machine body 800 through the transmission assembly 700. The transmission assembly 700 can realize the conversion of the movement direction between different components, and finally realize the position change of the machine body 800 in the vertical direction.

When the operator steps on the first operation plate 100 or the second operation plate 200, the movement of the two may be moving, or may be rotating. When the first operation panel 100 or the second operation panel 200 is stepped on, the body 800 moves synchronously to change the height thereof. The movement of the body 800 may be a movement or, alternatively, a rotation.

For example, in some embodiments, the first and second manipulation plates 100 and 200 rotate to realize the movement of the body 800. At this time, the transmission assembly 700 may be configured as a worm gear assembly, and the first operation plate 100 and the second operation plate 200 rotate to drive the worm gear to rotate. Alternatively, in some embodiments, the transmission assembly 700 may be configured as a lead screw assembly, and the first operation plate 100 and the second operation plate 200 rotate to drive the lead screw to rotate, and a nut on the lead screw is connected to the machine body 800. Of course, other similar structures besides the above are also possible, and are not described herein again.

Referring to fig. 4 to 9, a schematic structural diagram of the height-adjusting mechanism of the mowing device in fig. 1, an exploded view of the height-adjusting mechanism of the mowing device in fig. 5, a schematic partial structural diagram of the height-adjusting mechanism in fig. 5 from another perspective, a cross-sectional view of the height-adjusting mechanism in fig. 5, and a schematic partial structural diagram of the height-adjusting mechanism in fig. 5 are respectively shown. Further, the first operating panel 100 and the second operating panel 200 drive the machine body 800 to move through the adjusting wheel 300. The adjusting wheel 300 is connected with the machine body 800 through a transmission assembly 700. When the first operating plate 100 moves to the first position, the first operating plate 100 can be connected or abutted with the adjusting wheel 300, and when the first operating plate 100 continues to move, the adjusting wheel 300 is driven to rotate along the first direction; when the second operation panel 200 moves to the second position, the second operation panel 200 can be connected or abutted to the adjustment wheel 300, and when the second operation panel 200 continues to move, the adjustment wheel 300 is driven to rotate along the second direction. The second direction is opposite the first direction.

In some embodiments, the first and second operation plates 100 and 200 can be stepped to rotate to realize the rotation of the body 800.

Specifically, the first operating panel 100 and the second operating panel 200 are respectively located at two sides of the adjusting wheel 300, and the first operating panel 100, the second operating panel 200 and the adjusting wheel 300 are rotatably connected to the operating panel connecting member 510. The operation plate connector 510 includes an operation plate connector body 511, a boss 512, a first shaft 513, and a second shaft 514. The operation panel connector body 511 is fixedly connected to the frame 1020. The operation panel connector main body 511 is provided with a first shaft 513 and a second shaft 514 in a protruding manner. The first operating plate 100 is sleeved on the first shaft 513, and the first operating plate 100 can rotate around the first shaft 513. The second operation panel 200 is sleeved on the second shaft 514, and the second operation panel 200 can rotate around the second shaft 514. The boss 512 protrudes from the operation panel connecting body 511 and is hollow, and the third shaft 710 passes through the boss 512 and is fixedly connected with the operation panel connecting body 511. The adjusting wheel 300 is sleeved on the boss 512 and can rotate relative to the boss 512.

The adjusting wheel 300 is provided with a first adjusting portion 310 and a second adjusting portion 320, when the first operating panel 100 rotates to a first position, the first operating panel 100 can be connected with the first adjusting portion 310, and when the first operating panel 100 continues to rotate, the adjusting wheel 300 is driven to rotate along a first direction; when the second operation panel 200 rotates to the second position, the second operation panel 200 can be connected to the second adjustment portion 320, and when the second operation panel 200 continues to rotate, the adjustment wheel 300 will be driven to rotate along the second direction.

Specifically, in the adjusting wheel 300, the first adjusting portion 310 includes a plurality of first adjusting teeth 311, and a first tooth slot 312 is formed between adjacent first adjusting teeth 311. It should be noted that the first tooth slot 312 is formed between the first adjusting tooth 311 located at the outermost edge and the root circle. When the first operating plate 100 is rotated to the first position, it can be caught in the first tooth groove 312.

Similarly, the second adjusting part 320 includes a plurality of second adjusting teeth 321, a second tooth slot 322 is formed between adjacent second adjusting teeth 321, and a second tooth slot 322 is formed between the second adjusting tooth 321 positioned at the outermost edge and the root circle. When the second operation plate 200 is rotated to the second position, it can be caught in the second gear groove 322.

The first operation panel 100 includes a first operation panel main body 110 and a first toggle member, the first operation panel main body 110 is connected to the first toggle member, and the first toggle member is located at a side close to the adjustment wheel 300.

Similarly, the second operation panel 200 includes a second operation panel main body 210 and a second toggle member, and the second operation panel main body 210 is connected to the second toggle member, and the second toggle member is located at a side close to the adjustment wheel 300.

Preferably, the first moving member is the first finger 120, and the second moving member is the second finger 220.

When the first operating plate 100 is not stepped on, the first finger 120 is not in contact with the first tooth space 312, and similarly, when the second operating plate 200 is not stepped on, the second finger 220 is not in contact with the second tooth space 322. When one of the operation plates is stepped on, only the operation plate is in contact with the adjusting wheel 300 and drives the adjusting wheel 300 to rotate, and because the other operation plate is not in contact with the adjusting wheel 300, the rotation of the adjusting wheel 300 cannot influence the other operation plate which is not in contact with the adjusting wheel, so that the operation of the height adjusting mechanism is safer and more reliable.

Specifically, when the first operation plate 100 is not depressed, the first finger 120 is located below the first tooth groove 312. The stepping position on the first operation plate 100 is located at the top, the first finger 120 is located at the bottom, and the first shaft 513 is located at the middle. The first operating plate main body 110 is sleeved on the first shaft 513 and can pivot around the first shaft 513. Therefore, when the lawnmower is placed on the ground, the first operation plate 100 is stepped on, the first operation plate 100 rotates in the second direction around the first shaft 513 as a whole, the portion of the first operation plate 100 located above the first shaft 513 rotates downward, that is, rotates in a direction toward the ground, and the portion of the first operation plate 100 located below the first shaft 513 rotates upward, that is, rotates in a direction away from the ground. The first finger 120 rotates upward, passes through the first notch 410 of the adjustment wheel housing 400 covering the exterior of the adjustment wheel 300, and gradually approaches the first tooth groove 312 until it is caught in the first tooth groove 312. At this time, the first operating panel 100 is connected to the adjustment wheel 300, and when the first operating panel 100 is continuously stepped on, the first finger 120 will drive the adjustment wheel 300 to rotate along the first direction.

When the second operation plate 200 is not stepped on, the second finger 220 is located below the second tooth groove 322. The stepping position on the second operation plate 200 is located at the top, the second finger 220 is located at the bottom, and the second shaft 514 is located at the middle. The second operation panel main body 210 is sleeved on the second shaft 514 and can pivot around the second shaft 514. Therefore, when the lawnmower is placed on the ground, the second operation plate 200 is stepped on, the second operation plate 200 rotates in the first direction around the second shaft 514 as a whole, the portion of the second operation plate 200 located above the second shaft 514 rotates downward, that is, rotates in the direction toward the ground, and the portion of the second operation plate 200 located below the second shaft 514 rotates upward, that is, rotates in the direction away from the ground. That is, the second finger 220 rotates upward, passes through the second notch 420 of the adjustment wheel housing 400 covered outside the adjustment wheel 300, and gradually approaches the second tooth slot 322 until the second finger is caught in the second tooth slot 322. At this time, the second operating panel 200 is connected to the adjustment wheel 300, and when the second operating panel 200 is continuously stepped on, the second finger 220 will drive the adjustment wheel 300 to rotate along the second direction.

Preferably, the top surfaces of the first operating panel 100 and the second operating panel 200 are provided with anti-slip lines to increase the friction force during treading, so that the first operating panel and the second operating panel are not easy to slip during treading.

Preferably, the first operating panel 100 and the second operating panel 200 are connected by an operating panel reset member. Further, the operation panel reset member is a first elastic member 520 connected to both the first operation panel 100 and the second operation panel 200. The first elastic member 520 is in a stretched state such that the first operating plate 100 tends to rotate in the first direction and the second operating plate 200 tends to rotate in the second direction. When the first operation plate 100 is stepped on, the first elastic member 520 is further stretched. When the first operating plate 100 is released, the first operating plate 100 will be rotationally restored in the first direction by the resilient force of the first elastic member 520. When the second operation panel 200 is stepped on, the first elastic member 520 is further stretched. When the second operation panel 200 is released, the second operation panel 200 will be rotated and reset in the second direction by the resilient force of the first elastic member 520. Thus, the first operation panel 100 and the second operation panel 200 can be automatically reset without performing other operations.

In addition, a first limit plate 5111 and a second limit plate 5112 are further provided on the operation plate connector body 511. When the first operating plate 100 is released, the first operating plate 100 is rotated in the first direction and is stopped and limited by the first limiting plate 5111. When the second operation plate 200 is released, the second operation plate 200 is rotated in the second direction and is stopped and limited by the second limit plate 5112. Preferably, the first limiting plate 5111 and the second limiting plate 5112 are made of a material with certain elasticity, such as silicone or rubber. Thus, the impact force on the first operation plate 100 and the second operation plate 200 can be reduced, so that the first operation plate and the second operation plate are not easy to damage.

Preferably, the first finger 120 is rotatably connected to the first operating plate body 110. The rotational connection is preferably a first finger 120 that pivots about at least a portion of the first operating plate body 110. Still further, the at least one portion is, for example, a first fixed shaft 111 fixedly provided to the first operation plate body 110. Specifically, the first finger 120 is sleeved on the first fixing shaft 111, and the first finger 120 can pivot around the first fixing shaft 111. Further, the first operating plate main body 110 is provided with a first movable space for the first finger 120 to pivot. When the first operating panel 100 is stepped on, the first operating panel main body 110 rotates along the second direction until the wall of the moving space contacts with the first finger 120, and when the first operating panel main body 110 continues to rotate along the second direction, the wall of the moving space abuts against the first finger 120 and pushes the first finger 120 to rotate along the second direction until the first finger 120 is pushed to be clamped into the first tooth groove 312. After first pusher dog 120 blocks in first tooth's socket 312, first pusher dog 120 supports with the wall of first tooth's socket 312 and holds and promote regulating wheel 300 at first tooth's socket 312 place and rotate along first direction, and simultaneously, first tooth's socket 312 gives first pusher dog 120 reaction force for first pusher dog 120 can rotate around first fixed axle 111 for first operation board main part 110, make first pusher dog 120 better with first regulation tooth 311 laminating, more stable card is in first tooth's socket 312, be difficult for breaking away from in first tooth's socket 312, thereby more stable drive regulating wheel 300 rotates. Similarly, the second finger 220 is rotatably connected to the second operation plate main body 210. The rotational connection is preferably a second finger 220 that pivots about at least a portion of the second operating plate body 210. The at least one portion is, for example, a second fixed shaft 211 fixedly provided to the second operation plate body 210. Specifically, the second finger 220 is sleeved on the second fixing shaft 211, and the second finger 220 can pivot around the second fixing shaft 211. Further, a second moving space for the second finger 220 to pivot is opened on the second operation plate main body 210. When the second operation panel 200 is stepped on, the second operation panel main body 210 rotates along the first direction until the wall of the second movable space contacts with the second finger 220, and when the second operation panel main body 210 continues to rotate along the first direction, the wall of the second movable space abuts against the second finger 220 and causes the second finger 220 to rotate along the first direction until the second finger 120 is clamped into the second slot 322. So, after second pusher dog 220 block goes into second tooth's socket 322, second pusher dog 220 supports with the wall of second tooth's socket 322 and holds and promote the regulating wheel 300 at second tooth's socket 322 and rotate along the second direction, and simultaneously, second tooth's socket 322 gives second pusher dog 220 reaction force, make second pusher dog 220 can rotate for the second fixed axle 211 of second operation panel main part 210, make the laminating of second pusher dog 220 better with second regulation tooth 321, more stable card is in second tooth's socket 322, be difficult for breaking away from in the second tooth's socket 322, thereby more stable drive regulating wheel 300 rotates.

Preferably, the first adjustment teeth 311 are helical teeth inclined with respect to the root circle. After the first finger 120 is engaged in the first tooth groove 312, when the first operating plate 100 is continuously stepped on, under a reaction force of a groove wall of the first tooth groove 312 to the first finger 120, the first finger 120 pivots relative to the first operating plate body 110, so that the first abutting surface 121 on the first finger 120 abuts against the first inclined surface 3111 on the first adjusting tooth 311 (i.e., a groove wall surface of the first tooth groove 312). Therefore, the first finger 120 can be more stably clamped in the first tooth groove 312 and is not easy to be separated from the first tooth groove 312, so that the adjusting wheel 300 can be more stably driven to rotate.

Similarly, the second regulating tooth 321 is a helical tooth inclined with respect to the root circle. After the second finger 220 is engaged with the second tooth groove 322, when the second operation plate 200 is continuously stepped on, under a reaction force of the groove wall of the second tooth groove 322 to the second finger 220, the second finger 220 pivots relative to the second operation plate body 210, so that the second abutting surface 221 on the second finger 220 abuts against the second inclined surface 3211 (i.e., the groove wall surface of the second tooth groove 322) on the second adjustment tooth 321. Therefore, the second finger 220 can be more stably clamped in the second tooth groove 322 and is not easy to disengage from the second tooth groove 322, so that the adjusting wheel 300 can be more stably driven to rotate.

Preferably, the first operation plate main body 110 is further provided with a first toggle member resetting member of the first toggle 120. The first shifting piece resetting piece can be used for enabling the first shifting claw 120 to be attached to the adjusting wheel 300 better, so that the adjusting wheel 300 can be stirred to rotate better, and the first shifting claw 120 can be reset after the first shifting claw 120 is separated from the first tooth groove 312, so that interference of the first shifting claw 120 on rotation of the adjusting wheel 300 is avoided. For example, the first toggle piece resetting piece is an elastic piece. For example, the elastic member is a first finger elastic member 130 connected between the first finger 120 and the first operation plate body 110. Specifically, one end of the first finger elastic element 130 is connected to the bottom of the first operation plate body 110, and the other end is connected to a portion of the first finger 120 exposed from the first operation plate body 110. After first pusher dog 120 blocks into first tooth's socket 312, under the resilience effect of first pusher dog elastic component 130, first pusher dog 120 can elastically support and hold in first tooth's socket 312, and it is inseparabler to laminate between first pusher dog 120 and the first tooth's socket 312, is difficult for breaking away from in the first tooth's socket 312 to more stable drive regulating wheel 300 rotates. Moreover, when the first finger 120 contacts with the first tooth slot 312, a certain elastic retraction can be generated, so that the first tooth slot 312 is prevented from being damaged due to rigid contact. When the first operating plate 100 is released, the first operating plate 100 is pulled by the first elastic member 520 to rotate and reset along the first direction, the rotation makes the first fixed shaft 111 in the first operating plate main body 110 far away from the adjusting wheel 300, the first fixed shaft 111 drives the first finger 120 to far away from the first tooth groove 312 of the adjusting wheel 300, when the first finger 120 is separated from the first tooth groove 312, the resilience of the first finger elastic member 130 pulls the first finger 120 to rotate around the first fixed shaft 111 along the first direction, and the needle point of the first finger 120 faces the ground after the rotation, so that the whole first finger 120 is far away from the first tooth groove 312, and the interference of the first finger 120 on the rotation of the adjusting wheel 300 is avoided.

Similarly, the second operation plate main body 210 is further provided with a second toggle piece resetting piece of the second toggle 220. The second shifting piece resetting piece can be used for enabling the second shifting claw 220 to be attached to the adjusting wheel 300 better, so that the adjusting wheel 300 can be stirred better to rotate, and the second shifting claw 220 can be reset after the second shifting claw 220 is separated from the second gear groove 322, so that interference of the second shifting claw 220 on rotation of the adjusting wheel 300 is avoided. For example, the second toggle piece resetting piece is an elastic piece. For example, the elastic member is a second finger elastic member 230 connected between the second finger 220 and the second operation plate main body 210. Specifically, one end of the second finger elastic element 230 is connected to the bottom of the second operation board main body 210, and the other end is connected to a portion of the second finger 220 exposed from the second operation board main body 210. Second operation panel main part 210 is connected through second pusher dog elastic component 230 with second pusher dog 220 between, so, after second pusher dog 220 card goes into second tooth socket 322, under the resilience effect of second pusher dog elastic component 230, second pusher dog 220 can elastically support and hold in second tooth socket 322, it is inseparabler to laminate between second pusher dog 220 and the second tooth socket 322, be difficult for breaking away from in the second tooth socket 322 to more stable drive regulating wheel 300 rotates. In addition, the second finger 220 can elastically retract to a certain extent when contacting the second tooth slot 322, so that the second tooth slot 322 is prevented from being damaged due to rigid contact. When the second operation plate 200 is released, the second operation plate 200 is pulled by the first elastic member 520 to rotate and reset along the second direction, the rotation makes the second fixing shaft 211 in the second operation plate main body 210 far away from the adjustment wheel 300, the second fixing shaft 211 drives the second finger 220 far away from the second tooth slot 322 of the adjustment wheel 300, when the second finger 220 is separated from the second tooth slot 322, the resilience of the second finger elastic member 230 pulls the second finger 220 to rotate around the second fixing shaft 211 along the second direction, and the needle point of the second finger 120 faces the ground after the rotation, so that the whole second finger 220 is far away from the second tooth slot 322, and further, the interference of the second finger 220 on the rotation of the adjustment wheel 300 is avoided.

It should be noted that in other embodiments of the present invention, toothed elements may be used in place of first finger 120 and/or second finger 220. Specifically, a first toothed member is sleeved on the first fixing shaft 111 of the first operation plate body 110, and a second toothed member is sleeved on the second fixing shaft 211 of the second operation plate body 210. When the first or second operation panel 100 or 200 is stepped on, the first and/or second toothed member is engaged with the adjustment wheel 300, thereby rotating the adjustment wheel 300.

As described above, the first and second operation plates 100 and 200 can be stepped to rotate to realize the rotation of the body 800. When the first and second operation panels 100 and 200 rotate and drive the adjustment wheel 300 to rotate, the power is transmitted to the machine body 800 through the transmission assembly 700.

Further, the transmission assembly 700 can convert the rotation of the adjustment wheel 300 around the horizontal axis into the up-and-down rotation of the body 800.

Specifically, in some embodiments, the transmission assembly 700 includes a rotating member 720, a cam 730, and a first link 740. The regulating wheel 300 is connected with the rotating part 720, the rotating part 720 is sleeved on the third shaft 710, and when the regulating wheel 300 rotates, the rotating part 720 can be driven to rotate around the third shaft 710. The cam 730 is fixedly connected to the rotating member 720, the top end of the first link 740 is rotatably connected to the cam 730, and the bottom end is rotatably connected to the body 800. Therefore, when the adjustment wheel 300 rotates, the adjustment wheel 300 drives the rotation member 720 to rotate, the rotation member 720 rotates to drive the cam 730 to rotate around the third shaft 730, the bottom end of the cam 730 drives the first connecting rod 740 to swing up and down, and the first connecting rod 740 drives the machine body 800 to rotate relative to the frame 1020, so as to adjust the height of the machine body 800.

Preferably, the height adjusting mechanism is further provided with an adjustment indicating structure. The adjustment indicating structure is used for indicating the height gear of the machine body 800. Further, the adjustment indicating structure is disposed on the rotating member 720. Still further, the adjustment indicating structure includes a scale 721 disposed on the rotating member 720. The adjustment wheel 300 is covered with an adjustment wheel housing 400, and one side of the adjustment wheel housing 400 extends to surround the end of the rotation member 720. A third notch 430 is formed on the adjustment wheel housing 400, and a pointer 440 is disposed at one side of the third notch 430. The scale 721 is exposed from the third notch 430. When the first or second operation panel 100 or 200 is stepped to adjust the height of the machine body 800, a plurality of adjustment gears may be provided, each corresponding to a different height. When the rotating member 720 is rotated until the pointer 440 is aligned with a certain gear position in the scale 721, it indicates that the height corresponding to the gear position has been adjusted. Through the structure, the height adjusting device is more convenient and fast to adjust the height, and the current height gear can be rapidly known. In addition, the positions of the pointer 440 and the scale 721 can be interchanged.

Preferably, the first adjusting teeth 311 and the second adjusting teeth 321 are distributed in a staggered manner along the axial direction of the adjusting wheel 300. In this way, the number of the first adjusting teeth 311 and the second adjusting teeth 321 can be increased, so that the number of the gear positions during gear position adjustment can be increased, and the height adjusting range can be expanded.

Preferably, the rotation member 720 and the first link 740 are provided with reinforcing ribs to increase the strength thereof so that they are not easily broken during movement.

Preferably, a parallelogram mechanism is further disposed between the frame 1020 and the body 800 to improve stability of the body 800 when rotating relative to the frame 1020. Specifically, referring to fig. 2 and 3, four corners of the body 800 are rotatably connected to the frame 1020 through a second link 920, a third link 930, a fourth link 940 and a fifth link 950, respectively.

The body 800 is further provided with a fourth shaft 820. Preferably, the fourth shaft 820 and the third shaft 710 are connected by a second elastic member 910. The second elastic member 910 may suspend the body 800 on the frame 1020 together with the first link 740, the second link 920, the third link 930, the fourth link 940, and the fifth link 950, and may share a part of the weight of the body 800. In addition, when the body 800 rotates relative to the frame 1020, the second elastic member 910 can also play a certain buffering role, so that the rotation of the body 800 is more stable.

Preferably, in some embodiments, the body 800 can be locked at the current position after the height adjustment is completed, i.e., self-locking can be achieved after the adjustment is completed.

As described above, when the first or second operation panel 100 or 200 is rotated to be connected to the adjustment wheel 300, the height adjustment can be performed, and when the first or second operation panel 100 or 200 is rotated to be returned to be separated from the adjustment wheel 300, the height adjustment is completed. Therefore, when the first operating panel 100 or the second operating panel 200 rotates in the reverse direction to be separated from the adjustment wheel 300, the adjustment wheel 300 does not rotate in the reverse direction to be reset, so that the body 800 is self-locked and stabilized at the current position.

Specifically, a self-locking member 610 and a connecting member 620 are provided between the adjustment wheel 300 and the driving assembly 700. The connecting member 620 is connected to the rotating member 720, the locking member 610 is disposed on the boss 512, and the locking member 610 contacts with the adjustment wheel 300, when the adjustment wheel 300 rotates, the locking member 610 can rotate together with the adjustment wheel 300, so as to drive the connecting member 620 to rotate. When the first operating plate 100 or the second operating plate 200 is separated from the adjustment wheel 300, the adjustment wheel 300 stops rotating, the boss 512 will block the rotation of the self-locking member 610, so that the connecting member 620 cannot rotate, and the position of the blade 810 is locked.

Further, the self-locking member 610 is a torsion spring, and the torsion spring is sleeved on the boss 512. When the adjusting wheel 300 rotates, the adjusting wheel 300 abuts against the torsion spring to enable the torsion spring to elastically deform, the inner diameter of the torsion spring is increased, a gap exists between the torsion spring and the boss 512, and the rotation of the torsion spring is not limited by the boss 512. When the first operating plate 100 or the second operating plate 200 is separated from the adjusting wheel 300 and the adjusting wheel 300 stops rotating, the torsion spring rebounds, the inner diameter thereof is reduced and abuts against the boss 512, and the friction force between the two will hinder the rotation of the torsion spring. That is, when the first operating panel 100 or the second operating panel 200 is not stepped on, the torsion spring cannot rotate, and accordingly, the connecting member 620 and the rotating member 720 cannot rotate, and at this time, the height of the machine body 800 is locked.

Further, the torsion spring includes a first bent end 611, a second bent end 612 and a winding portion 613. The first bending end 611 and the second bending end 612 are respectively connected to two ends of the winding portion 613, and the winding portion 613 is sleeved on the boss 512. First and second bent ends 611 and 612 define an accommodating space 614 therebetween. The connecting member 620 includes a connecting member main body 621 and a protrusion 622, the connecting member main body 621 is fixedly connected to the rotating member 720, and the protrusion 622 protrudes into the receiving space 614, thereby forming a connection between the connecting member 620 and the self-locking member 610.

When the first operating plate 100 drives the adjusting wheel 300 to rotate, the adjusting wheel 300 abuts against the outer side of the first bending end 611, and the inner side of the first bending end 611 abuts against the connecting member 620. At this time, the torsion spring is elastically deformed by the urging of the adjustment wheel 300, the inner diameter of the winding portion 613 is increased, a gap is formed between the winding portion 613 and the boss 512, and the rotation of the torsion spring is not restricted.

Similarly, when the second operating plate 200 drives the adjusting wheel 300 to rotate, the adjusting wheel 300 abuts against the outer side of the second bending end 612, and the inner side of the second bending end 612 abuts against the connecting member 620. At this time, the torsion spring is elastically deformed by the urging of the adjustment wheel 300, the inner diameter of the winding portion 613 is increased, a gap is formed between the winding portion 613 and the boss 512, and the rotation of the torsion spring is not restricted.

When the first operating plate 100 or the second operating plate 200 is separated from the adjusting wheel 300, the adjusting wheel 300 is no longer abutted against the outer side of the first bending end 611 or the second bending end 612, and the inner diameter of the winding portion 613 is reduced under the effect of the resilient force and is abutted against the boss 512 without a gap therebetween.

Specifically, the adjusting wheel 300 further includes a convex ring 330 at an end of the second adjusting portion 320, and the convex ring 330 is provided with a first pushing plate 331 and a second pushing plate 332. An opening 333 is formed between the first pushing plate 331 and the second pushing plate 332 on the protruding ring 330, and the first bending end 611 and the second bending end 612 extend from the opening 333. When the first operating plate 100 drives the adjusting wheel 300 to rotate, the first pushing plate 331 abuts against the outer side of the first bending end 611 and pushes the torsion spring to rotate. When the second operating plate 200 drives the adjusting wheel 300 to rotate, the second pushing plate 332 abuts against the outer side of the second bending end 612 and pushes the torsion spring to rotate.

Further, after the machine body 800 is lifted, the first operating panel 100 is released, if the machine body 800 is going to descend due to its own weight, the gravity of the machine body 800 gives a downward pulling force to the first connecting rod 740, the first connecting rod 740 is going to drive the cam 730 to rotate under the downward pulling force, so as to drive the rotating member 720 fixedly connected to the cam 730 and the connecting member 620 fixedly connected to the rotating member 720 to rotate together, but the first bending end 611 blocks the rotation of the protruding portion 622 of the connecting member 620, and the friction between the torsion spring and the boss 512 also resists rotation of the torsion spring relative to the boss 512, therefore, the rotation of the connecting member 620, the rotating member 720, the first link 740 and the body 800 is blocked, that is, the bending end of the torsion spring and the friction force between the torsion spring and the boss 512 jointly prevent the movement of the connecting member 620, the rotating member 720 and the cam 730, the first link 740 and the body 800, and a one-way locking function is realized.

In the above structure, the height of the body 800 is locked by the unidirectional locking characteristic of the torsion spring when external force is applied to the torsion spring from different directions, the structure is simple, the cost of the torsion spring is low, and the structure is easy to obtain.

In addition, the height adjusting mechanism can be applied to other devices which need to adjust the height of the target component besides the mowing device.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (12)

1. The height adjustment mechanism, which can adjust the height of a target member, is characterized by comprising:

a first operation panel;

a second operation panel;

when the first operation plate moves to a first position, the first operation plate can be connected with the target component and drive the target component to move so as to raise the height of the target component, and when the second operation plate moves to a second position, the second operation plate can be connected with the target component and drive the target component to move so as to lower the height of the target component.

2. The height adjusting mechanism according to claim 1, further comprising a transmission assembly, wherein the first operation board, the second operation board, and the target component are all connected to the transmission assembly, the first operation board can drive the target component to move through the transmission assembly to raise the height of the target component, and the second operation board can drive the target component to move through the transmission assembly to lower the height of the target component.

3. The height adjusting mechanism according to claim 2, further comprising an adjusting wheel connected to the transmission assembly and capable of being connected to the adjusting wheel and driving the adjusting wheel to rotate in a first direction when the first operating plate moves to a first position, and capable of being connected to the adjusting wheel and driving the adjusting wheel to rotate in a second direction when the second operating plate moves to a second position, the second direction being opposite to the first direction.

4. The height adjusting mechanism according to claim 3, further comprising an operation panel reset member, wherein the operation panel reset member is connected to both the first operation panel and the second operation panel, and the operation panel reset member drives the first operation panel and/or the second operation panel to reset.

5. The height adjustment mechanism according to claim 3, wherein the adjustment wheel includes a first adjustment portion connectable to the first adjustment portion when the first operation plate is moved to the first position and a second adjustment portion connectable to the second adjustment portion when the second operation plate is moved to the second position; the first adjusting portion comprises a first tooth groove, the first operating plate comprises a first poking piece, and when the first operating plate moves to the first position, the first poking piece can be clamped into the first tooth groove; the second adjusting portion comprises a second tooth groove, the second operating plate comprises a second poking piece, and when the second operating plate moves to the second position, the second poking piece can be clamped into the second tooth groove.

6. The height adjusting mechanism according to claim 5, wherein the first operating plate further comprises a first operating plate main body and a first toggle piece resetting piece, and the first toggle piece and the first operating plate main body are connected through the first toggle piece resetting piece; the second operation panel also comprises a second operation panel main body and a second toggle piece resetting piece, and the second toggle piece is connected with the second operation panel main body through the second toggle piece resetting piece.

7. The height adjustment mechanism of claim 3, wherein the position of the target member is locked when the first or second operating plate is separated from the adjustment wheel.

8. The height-adjusting mechanism according to claim 7, further comprising a boss, a self-locking member and a connecting member, wherein the connecting member is connected to the target member, the self-locking member locks the connecting member to the boss, and when the adjustment wheel rotates, the locking of the self-locking member to the connecting member can be released.

9. The height-adjusting mechanism according to claim 8, wherein the self-locking member is a torsion spring, the torsion spring is sleeved on the boss and abuts against the boss, when the adjusting wheel rotates, the torsion spring deforms, so that a gap exists between the torsion spring and the boss, and the torsion spring can rotate along with the adjusting wheel.

10. The height adjusting mechanism according to claim 9, wherein the torsion spring includes a first bending end and a second bending end, an accommodating space is defined between the first bending end and the second bending end, the connecting member extends into the accommodating space, when the adjusting wheel rotates, the adjusting wheel abuts against an outer side of the first bending end or an outer side of the second bending end, and an inner side of the first bending end or an inner side of the second bending end abuts against the connecting member.

11. The height adjusting mechanism as claimed in claim 10, wherein the adjusting wheel includes an opening and a pushing plate, one pushing plate is disposed on each of two sides of the opening, the first bending end and the second bending end extend through the opening, and when the adjusting wheel rotates, the pushing plate abuts against the first bending end or the second bending end.

12. A mowing device comprising the height-adjusting mechanism according to any one of claims 1 to 11, wherein the target member is a blade.

Images