Height-adjustable mower

Abstract

The utility model discloses a hay mower with adjustable height, which comprises a hay mower main body, a blade assembly is arranged on the hay mower main body, a front wheel assembly and a rear wheel assembly are respectively arranged at the front end and the rear end of the hay mower main body, an adjusting arm is rotatably arranged on the hay mower main body, the adjusting arm is connected with the front wheel assembly, and the front wheel assembly is connected with the rear wheel assembly. The adjusting arm always has the movement trend of driving the front wheel assembly to swing upwards. A gear shifting rod is rotationally arranged on the mower body, a plurality of height adjusting grooves distributed at intervals are formed in the adjusting arm, the gear shifting rod always has the movement tendency of rotating towards the height adjusting grooves, and the gear shifting rod is arranged in the height adjusting grooves so that the front wheel assembly can be kept at the current height. An adjusting handle assembly is arranged on the mower body and comprises a driving pull rod for driving the gear shifting rod to be separated from the current height adjusting groove to rotate.

Description

TECHNICAL FIELD

[0001] The utility model relates to lawn mower technical field, concretely relates to a height adjustable lawn mower. BACKGROUND

[0002] Lawn mower is also called grass cutter, grass trimmer, lawn trimmer, etc. The lawn mower is a mechanical tool for trimming lawn, vegetation, etc. It is composed of a cutter head, an engine, walking wheels, a walking mechanism, a blade, a handrail and a control part. The cutter head is mounted on the walking wheels, the cutter head is provided with the engine, the output shaft of the engine is provided with the blade, and the blade is improved in speed by the high-speed rotation of the engine, thereby saving the working time of the grass cutter and reducing a large amount of human resources.

[0003] The existing lawn mower usually comprises a frame, a plurality of walking wheels arranged on both sides of the frame, a cutter mechanism mounted on the bottom of the frame, and a hand push handle connected with the frame. When in use, an operator pushes the hand push handle, the walking wheels drive the frame to move, and the cutter mechanism trims the lawn. Since the environment of the lawn is different, the trimming height requirements are different during the actual trimming process of the lawn, so it is generally necessary to provide a height adjusting structure to adjust the height of the lawn mower.

[0004] For example, the height-adjustable lawn mower disclosed in the publication No. CN210183900U comprises an upper shell, a lower shell, a roller, a rotating shaft for installing the roller, and a height adjusting assembly installed in the main body of the lawn mower. The height adjusting assembly comprises a gear limiting pull rod and a gear piece. The side wall of the gear limiting pull rod is provided with a positioning shaft. The side wall of the gear piece is horizontally provided with a mounting through hole. The top of the mounting through hole is provided with a plurality of positioning through holes for embedding the positioning shaft at intervals along the top edge of the mounting through hole. The two ends of the rotating shaft are provided with an extension rod perpendicular to the rotating shaft and a mounting shaft for installing the roller. One end of the gear piece is installed with the mounting shaft, and the other end is rotatably installed with the positioning shaft. The roller comprises a front wheel installed on the front side of the lawn mower and a rear wheel installed on the rear side of the lawn mower. The side wall of the front wheel on the same side as the rear wheel provided with the gear piece is installed with a mounting piece. A connecting rod is installed between the mounting piece and the gear piece. One end of the connecting rod is rotatably installed with the gear piece, and the other end is rotatably installed with the mounting piece. One side of the mounting piece is rotatably installed with the mounting shaft, and the other side is rotatably installed with the connecting rod. The top of the gear limiting pull rod is provided with an adjusting button. The adjusting button is fixed with the top of the gear limiting pull rod. A compression spring is sleeved outside the gear limiting pull rod. One end of the compression spring is in contact with the adjusting button, and the other end is in contact with the upper shell.

[0005] However, the height adjusting mechanism of the mower in the prior art needs to be pressed to adjust the height, and the button needs to be kept in the pressed state during the process, which is laborious for the user and reduces the user experience. Utility model content

[0006] To solve the technical problems in the background art, the utility model provides a height-adjustable mower.

[0007] The utility model discloses the technical scheme adopted to solve its technical problems is as follows:

[0008] A height-adjustable mower, comprising a mower main body, a blade assembly is arranged on the mower main body, a front wheel assembly and a rear wheel assembly are arranged at the front end and the rear end of the mower main body respectively, an adjusting arm is arranged on the mower main body, the adjusting arm is connected with the front wheel assembly, and the adjusting arm always has a movement trend of driving the front wheel assembly to swing upward.

[0009] An adjusting lever is arranged on the mower main body, a plurality of height adjusting grooves are formed on the adjusting arm at intervals, the adjusting lever always has a movement trend of rotating towards the height adjusting grooves, and the adjusting lever is arranged in the height adjusting groove, so that the front wheel assembly is kept at the current height.

[0010] An adjusting handle assembly is arranged on the mower main body, the adjusting handle assembly comprises a driving pull rod for driving the adjusting lever to rotate and separate from the current height adjusting groove, the driving pull rod drives the adjusting lever to rotate and forces the adjusting lever to separate from the current height adjusting groove, and the adjusting arm drives the front wheel assembly to lift, and the adjusting lever is rotated into the next adjacent height adjusting groove.

[0011] Preferably, the adjusting handle assembly further comprises a handle shell fixed on the mower main body and an adjusting trigger for actuating the driving pull rod, the driving pull rod is arranged in the handle shell in a sliding manner, and when the adjusting trigger drives the driving pull rod to slide upward, the driving pull rod abuts against the adjusting lever and drives the adjusting lever to separate from the height adjusting groove. Through the above improvement, when the height of the mower needs to be lifted, the adjusting trigger can be pinched by the hand to make the driving pull rod rise and force the adjusting lever to separate from the current height adjusting groove and slide into the next height adjusting groove, so that the height of the mower can be quickly adjusted.

[0012] Preferably, the height adjusting groove is arranged on the side of the adjusting arm, the gear lever is horizontally rotated to be inserted into or separated from the height adjusting groove, the driving pull rod intersects with the movement track of the gear lever, the driving pull rod is in the movement track, and the gear lever is actuated to be separated from the height adjusting groove to drive the adjusting arm to lift the front wheel assembly.

[0013] Preferably, the first sliding slope is arranged on the driving pull rod, the second sliding slope is arranged on the gear lever, the first sliding slope is matched with the second sliding slope when the driving pull rod slides upward, and the gear lever slides along the first sliding slope and is separated from the height adjusting groove.

[0014] Preferably, the holding groove for the hand is arranged between the handle shell and the lawn mower body, and the adjusting trigger is arranged in the holding groove, the driving pull rod is driven to slide upward when the adjusting trigger is arranged in the handle shell, and the holding groove is pressed by the finger to drive the adjusting trigger to be arranged in the handle shell and drive the driving pull rod to slide upward, so that the gear is rapidly adjusted.

[0015] Preferably, the reset spring is arranged in the handle shell, one end of the reset spring abuts against the handle shell, and the other end of the reset spring abuts against the adjusting trigger, so that the adjusting trigger always has a movement trend of extending out of the holding groove, the adjusting trigger slides downward under the action of the reset spring after the hand is separated from the adjusting trigger, the driving pull rod is separated from the gear lever, the gear lever is reinserted into the height adjusting groove, and the lawn mower is kept at the current height.

[0016] Preferably, the tension spring is arranged on the lawn mower body, one end of the tension spring is connected with the adjusting arm, and the other end of the tension spring is connected with the lawn mower body, one end of the tension spring is connected with the adjusting arm, the other end of the tension spring is connected with the lawn mower body, the adjusting arm always has a movement trend of swinging upward, the adjusting arm swings upward after the gear lever is separated from the height adjusting groove, the hand is separated from the adjusting trigger, the driving pull rod is separated from the gear lever, the gear lever is reinserted into the height adjusting groove, and the lawn mower is kept at the current height, so that the height of the lawn mower is rapidly adjusted.

[0017] Preferably, the gear lever is provided with a torsional spring, one end of the torsional spring abuts the gear lever, and the other end abuts the mower body, so that the gear lever has a movement tendency of rotating towards the height adjusting groove, through the above improvement, when the hand releases the adjusting trigger, the driving pull rod descends away from the gear lever, and the gear lever reenters the height adjusting groove under the action of the torsional spring, so that the mower is kept at the current height, and rapid adjustment of the height of the mower is realized.

[0018] Preferably, an upper end of the gear lever is formed with a limiting column which is clamped with the height adjusting groove, and the limiting column is circularly arranged, through the above improvement, the smoothness of clamping the gear lever with the height adjusting groove is improved.

[0019] Preferably, the adjusting arm is provided with an indicating needle, and the mower body is formed with a height mark which is arranged opposite to the indicating needle, through the above improvement, the user can clearly see the height of the mower, so that the use experience of the user is improved.

[0020] Compared with the prior art, the mower has the following advantages and beneficial effects:

[0021] The adjusting arm is connected with the front wheel assembly, and the adjusting arm always has a movement tendency of driving the front wheel assembly to swing upward, the gear lever is arranged on the mower body, the adjusting arm is formed with a plurality of height adjusting grooves which are arranged at intervals, the gear lever always has a movement tendency of rotating towards the height adjusting groove, when the gear lever is placed in the height adjusting groove, the gear lever is clamped with the height adjusting groove, so that the front wheel assembly is kept at the current angle, the adjusting handle assembly is further arranged on the mower body, the adjusting handle assembly comprises a driving pull rod which drives the gear lever to rotate, when it is needed to raise the height of the mower, the driving pull rod can be used to drive the gear lever to rotate, so that the gear lever is separated from the current height adjusting groove, so that the adjusting arm drives the front wheel assembly to rise, the gear lever always has a movement tendency of rotating towards the height adjusting groove, so that the gear lever is rotated into the next adjacent height adjusting groove, so as to raise the height of the front wheel assembly, compared with the traditional adjusting button which needs to be kept in the pressing state, the operation is more convenient and labor-saving, and the convenience of the user in the use process is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structure schematic view of the whole of the utility model;

[0023] Figure 2 It is a structure schematic view of another angle of the whole of the utility model;

[0024] Figure 3 It is a structure schematic view of the Figure 2 It is a local enlarged view of A in the middle;

[0025] Figure 4The structure schematic view of the adjusting arm and the adjusting handle assembly cooperation of the utility model is shown in the figure.

[0026] Figure 5 The structure schematic view of the adjusting arm and the adjusting handle assembly cooperation of the utility model is shown in the figure.

[0027] Figure 6 The structure schematic view of the handle shell inside of the utility model is shown in the figure.

[0028] Figure 7 The explosion view of the adjusting handle group of the utility model is shown in the figure.

[0029] Figure 8 The structure schematic view of the gear adjusting lever of the utility model is shown in the figure.

[0030] Figure 9 The structure schematic view of the adjusting arm of the utility model is shown in the figure.

[0031] In the figure: 1, mower main body; 2, blade assembly; 3, front wheel assembly; 4, rear wheel assembly; 5, adjusting arm; 6, gear adjusting lever; 7, height adjusting groove; 8, adjusting handle assembly; 1.1, handle shell; 1.2, adjusting trigger; 1.3, driving pull rod; 1.4, first sliding inclined plane; 1.5, second sliding inclined plane; 1.6, holding groove; 1.7, return spring; 1.8, limiting column; 2.1, sliding groove; 2.2, tension spring; 2.3, torsion spring; 2.4, indicating needle; 2.5, height mark; DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0033] It should be understood that although the terms upper, middle, lower, top end, one end and the like appear in the present text to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for the purpose of understanding, and are not used to define any directional or sequential limitation.

[0034] As Figures 1-9 shown, a height-adjustable mower comprises a mower main body 1, a blade assembly 2 is arranged on the mower main body 1, a front wheel assembly 3 and a rear wheel assembly 4 are arranged at the front end and the rear end of the mower main body 1 respectively, an adjusting arm 5 is arranged on the mower main body 1, the adjusting arm 5 is connected with the front wheel assembly 3, and the adjusting arm 5 always has a movement trend of driving the front wheel assembly 3 to swing upward.

[0035] Specifically, the mower body 1 is provided with a gear lever 6, the adjusting arm 5 is provided with a plurality of height adjustment grooves 7 arranged at intervals, the gear lever 6 always has a movement trend of rotating towards the height adjustment groove 7, and the gear lever 6 is placed in the height adjustment groove 7 to keep the front wheel assembly (3) at the current height.

[0036] Further, the mower body 1 is provided with an adjusting handle assembly 8, the adjusting handle assembly 8 includes a driving pull rod 1.3 for driving the gear lever 6 to rotate away from the current height adjustment groove 7, the driving pull rod 1.3 drives the gear lever 6 to rotate and forces the gear lever 6 to move away from the current height adjustment groove 7, and the adjusting arm 5 drives the front wheel assembly 3 to rise and drives the gear lever 6 to rotate into the next adjacent height adjustment groove 7.

[0037] When it is necessary to raise the height of the mower, the driving pull rod 1.3 can be used to drive the gear lever 6 to rotate, so that the gear lever 6 moves away from the current height adjustment groove 7, so that the adjusting arm 5 drives the front wheel assembly 3 to rise, and because the gear lever 6 always has a movement trend of rotating towards the height adjustment groove 7, after the driving pull rod 1.3 stops, the gear lever 6 will rotate into the next adjacent height adjustment groove 7 to raise the height of the front wheel assembly. Compared with the conventional method of keeping the adjusting button pressed all the time, the operation is more convenient and labor-saving, and the convenience of the user during use is greatly improved.

[0038] As shown in Figures 2 to 7 As a further explanation of the structure of the adjusting handle assembly 8, the adjusting handle assembly 8 further includes a handle shell 1.1 fixed on the mower body 1 and an adjusting trigger 1.2 for actuating the driving pull rod 1.3, the driving pull rod 1.3 is slidingly arranged in the handle shell 1.1, one end of the adjusting trigger 1.2 is hinged to the handle shell 1.1, and the other end is connected with the driving pull rod 1.3.

[0039] When it is necessary to adjust the height of the mower, the adjusting trigger 1.2 can be pinched to drive the driving pull rod 1.3 to slide upwards, so that the driving pull rod 1.3 abuts against the gear lever 6 and drives the gear lever 6 to swing away from the current height adjustment groove 7, and after the adjusting trigger 1.2 is released, the gear lever 6 lacks the restriction of the driving pull rod 1.3 and will slide into the next adjacent height adjustment groove 7 to quickly raise the height of the mower.

[0040] Specifically, the height adjustment groove 7 is formed on the side of the adjusting arm 5, the gear lever 6 rotates horizontally to be placed in or moved away from the height adjustment groove 7, the driving pull rod 1.3 intersects with the movement track of the gear lever 6, and in the movement track, the driving pull rod 1.3 actuates the gear lever 6 to move away from the height adjustment groove 7 to drive the adjusting arm 5 to raise the front wheel assembly 3 to quickly adjust the height of the mower.

[0041] A first sliding slope 1.4 is formed on the drive lever 1.3, and a second sliding slope 1.5 is formed on the gear shift lever 6. When the drive lever 1.3 slides upward, the first sliding slope 1.4 and the second sliding slope 1.5 are in contact. As the drive lever 1.3 slides upward, the gear shift lever 6 slides along the first sliding slope 1.4 and disengages from the height adjustment groove 7 by utilizing the cooperation of the first sliding slope 1.4 and the second sliding slope 1.5, thereby improving the smoothness of the gear shift lever 6 when rotating.

[0042] Furthermore, a grip groove 16 for inserting a hand is formed between the handle housing 1.1 and the lawnmower body 1, and the adjustment trigger 1.2 is partially inserted into the grip groove 1.6. When it is necessary to adjust the height, one can hold the handle housing 1.1 and insert one's fingers into the grip groove 1.6. By pressing with the fingers, the adjustment trigger 1.2 is retracted into the handle housing 1.1. The adjustment trigger 1.2 drives the drive lever 1.3 to slide upward to quickly adjust the gear, thereby improving the convenience of daily use for the user.

[0043] In addition, a return spring 1.7 is provided inside the handle housing 1.1. One end of the return spring 1.7 abuts against the handle housing 1.1, and the other end abuts against the adjustment trigger 1.2, so that the adjustment trigger 1.2 always has the tendency to extend out of the grip groove 1.6. When the hand releases the adjustment trigger 1.2, the adjustment trigger 1.2 will slide down under the action of the return spring 1.7, and cause the drive lever 1.3 to descend and move away from the gear shift lever 6, so that the gear shift lever 6 re-enters the height adjustment groove 7, and keeps the lawnmower at the current height.

[0044] like Figure 4 , Figure 5 , Figure 9 As shown, to further explain the cooperation between the adjusting arm 5 and the lawnmower body 1, a tension spring 2.2 is provided on the lawnmower body 1. One end of the tension spring 2.2 is connected to the adjusting arm 5, and the other end is connected to the lawnmower body 1. This ensures that the entire adjusting arm 5 always has an upward swinging tendency. When the shift lever 6 is disengaged from the current height adjustment slot 7, the adjusting arm 5, no longer restricted by the shift lever 6, will swing upward. At the same time, the hand releases the adjusting trigger 1.2, driving the pull rod 1.3 to descend away from the shift lever 6, causing the shift lever 6 to re-enter the height adjustment slot 7, keeping the lawnmower at the current height, thus achieving rapid adjustment of the lawnmower height.

[0045] Preferably, the lawnmower body 1 has a sliding groove 2.1, and the adjusting arm 5 is placed in the adjusting groove to improve the stability of the adjusting arm 5 during rotation.

[0046] like Figure 4 , Figure 8As shown, as further explanation of the cooperation of the gear lever 6 with the mower body 1, a torsion spring 2.3 is arranged on the gear lever 6, one end of the torsion spring 2.3 abuts against the gear lever 6, and the other end abuts against the mower body 1, so that the gear lever 6 substantially has a movement tendency of rotating towards the height adjustment groove 7, and through the above improvement, when the hand releases the adjustment trigger 1.2, the driving pull rod 1.3 is lowered away from the gear lever 6, the gear lever 6 is re-entered into the height adjustment groove 7 under the action of the torsion spring 2.3, the mower is kept at the current height, and the quick adjustment of the height of the mower is realized.

[0047] Further, a limiting column 1.8 is formed at the upper end of the gear lever 6 and is arranged in clamping connection with the height adjustment groove 7, and the outer periphery of the limiting column 1.8 is arranged in a circular arc shape, so that the smoothness when the gear lever 6 is clamped with the height adjustment groove 7 is improved.

[0048] As shown, Figure 1 In some other embodiments, an indicating needle 2.4 is arranged on the adjustment arm 5, and a height mark 2.5 is formed on the mower body 1 and is arranged opposite to the indicating needle 2.4, and through the cooperation of the indicating needle 2.4 and the height mark 2.5, the user can clearly see the current height of the mower, so that the use experience of the user is improved.

[0049] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and the person skilled in the art can make a modification of the embodiment without creative contribution according to the need after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A height-adjustable mower comprising a mower body (1), a blade assembly (2) arranged on the mower body (1), a front wheel assembly (3) and a rear wheel assembly (4) arranged at the front end and the rear end of the mower body (1) respectively, characterized in that, The mower body (1) is provided with an adjusting arm (5), the adjusting arm (5) is connected with the front wheel assembly (3), the adjusting arm (5) always has a movement trend of driving the front wheel assembly (3) to swing upward; The mower body (1) is provided with a gear lever (6), a plurality of height adjusting grooves (7) are formed on the adjusting arm (5), the gear lever (6) always has a movement trend of rotating towards the height adjusting groove (7), the gear lever (6) is placed in the height adjusting groove (7), so that the front wheel assembly (3) is kept at the current height; The mower body (1) is provided with an adjusting handle assembly (8), the adjusting handle assembly (8) includes a driving pull rod (1.3) for driving the gear lever (6) to rotate and separate from the current height adjusting groove (7), the driving pull rod (1.3) drives the gear lever (6) to rotate and forces the gear lever (6) to separate from the current height adjusting groove (7), and the adjusting arm (5) drives the front wheel assembly (3) to lift, and the gear lever (6) is rotated into the next adjacent height adjusting groove (7).

2. A height adjustable lawnmower according to claim 1, characterised in that, The adjusting handle assembly (8) further includes a handle shell (1.1) fixed on the mower body (1), and an adjusting trigger (1.2) for actuating the driving pull rod (1.3), the driving pull rod (1.3) is slidably arranged in the handle shell (1.1), when the adjusting trigger (1.2) drives the driving pull rod (1.3) to slide upward, the driving pull rod (1.3) abuts against the gear lever (6) and drives the gear lever (6) to separate from the height adjusting groove (7).

3. A height adjustable lawnmower according to claim 1, characterised in that, The height adjusting groove (7) is formed on the side of the adjusting arm (5), the gear lever (6) rotates horizontally to be placed in or separated from the height adjusting groove (7), the movement track of the driving pull rod (1.3) intersects with the movement track of the gear lever (6), in the movement track of the driving pull rod (1.3), the gear lever (6) is actuated to be away from the height adjusting groove (7), so that the adjusting arm (5) drives the front wheel assembly (3) to lift.

4. A height adjustable lawnmower according to claim 2, characterised in that, A first sliding slope (1.4) is formed on the driving pull rod (1.3), a second sliding slope (1.5) is formed on the gear lever (6), when the driving pull rod (1.3) slides upward, the first sliding slope (1.4) is fitted with the second sliding slope (1.5), and the gear lever (6) slides along the first sliding slope (1.4) and separates from the height adjusting groove (7).

5. A height adjustable lawnmower according to claim 2, characterised in that, A holding groove (1.6) for placing hands is formed between the handle shell (1.1) and the mower body (1), and a part of the adjusting trigger (1.2) is placed in the holding groove (1.6), when the adjusting trigger (1.2) is received in the handle shell (1.1), the adjusting trigger (1.2) drives the driving pull rod (1.3) to slide upward.

6. A height adjustable lawnmower according to claim 2, characterised in that, A reset spring (1.7) is arranged in the handle shell (1.1), one end of the reset spring (1.7) abuts against the handle shell (1.1), and the other end abuts against the adjusting trigger (1.2), so that the adjusting trigger (1.2) always has a movement trend of extending out of the holding groove (1.6).

7. A height adjustable lawnmower according to claim 1, characterised in that, The mower body (1) is provided with a tension spring (2.2), one end of the tension spring (2.2) is connected with an adjusting arm (5), and the other end is connected with the mower body (1).

8. A height adjustable lawnmower according to claim 1, characterised in that, The gear lever (6) is provided with a torsion spring (2.3), one end of the torsion spring (2.3) abuts against the gear lever (6), and the other end abuts against the mower body (1), so that the gear lever (6) has a movement trend of rotating towards the height adjusting groove (7).

9. A height adjustable lawnmower according to claim 1, characterised in that, The gear lever (6) is provided with a limiting column (1.8) at the upper end, the limiting column (1.8) is in clamping connection with the height adjusting groove (7), and the outer periphery of the limiting column (1.8) is in circular arc shape.

10. A height adjustable lawnmower according to claim 1, characterised in that, The adjusting arm (5) is provided with an indicating needle (2.4), and the mower body (1) is formed with a height mark (2.5) which is opposite to the indicating needle (2.4).

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