Steering system for mower and mower

Abstract

The steering system comprises a steering wheel and a steering column, the steering wheel and the steering column are located right in front of a seat of the mower, the steering column comprises an upper steering column body and a lower steering column body, the steering wheel is installed on the upper steering column body, and the included angle between the upper steering column body and the lower steering column body is adjustable and can be locked. The pitching angle of the steering wheel is adjustable; according to the steering system for the mower, the structure of the steering system is improved, the pitching angle of the steering wheel can be adjusted by adjusting the included angle between the upper steering column and the lower steering column, the steering system can meet the driving and riding requirements of different drivers and passengers, and the driving and riding experience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to garden tool technical field especially a kind of steering system and mower for mower. BACKGROUND

[0002] As a kind of garden tool, seat type mower is widely used in the field of trimming lawn and vegetation, compared with hand-propelled mower, mower tractor and other uses more labor-saving, higher mowing efficiency, the steering mechanism on current mower cannot be adjusted relative to the pitch angle of driver, so that driver is in the most comfortable position relative to the steering mechanism when using, and the operation experience is poor.

[0003] Therefore, it is necessary to improve the structure of the steering system of the mower in the prior art, so that the pitch angle of the steering wheel in the steering system can be adjusted, so as to adapt to the use requirements of different drivers, improve the operation experience, and also save the transportation space occupied by the mower during transportation. SUMMARY

[0004] Therefore, the utility model provides a kind of steering system and mower for mower, the pitch angle of the steering wheel of mower can be adjusted, so as to adapt to the use requirements of different drivers, improve the operation experience, and also save the transportation space occupied by the mower during transportation.

[0005] The steering system for mower of the utility model, including steering wheel and steering column, the steering wheel and steering column are located in the front of mower seat, the steering column includes upper steering column and lower steering column, the steering wheel is installed on the upper steering column, the included angle between the upper steering column and lower steering column is adjustable and can be locked, so that the pitch angle of the steering wheel can be adjusted.

[0006] Further, the upper steering column is hinged to the lower steering column by a hinge shaft, so that the included angle between the upper steering column and the lower steering column can be adjusted.

[0007] Further, the upper steering column extends downward to form a hinge lug, the lower steering column overlaps the hinge lug to form an overlapping portion, and the hinge shaft passes through the overlapping portion to form the hinge.

[0008] Further, it further includes locking mechanism, including locking shaft and locking piece, the locking shaft passes through the overlapping portion and applies force to the overlapping portion by locking piece, so that the overlapping portion is locked.

[0009] Further, the locking piece is a cam pair, the cam pair includes cam seat and cam block, the cam seat is limited in rotational freedom, and the cam block follows the locking shaft in rotational freedom;

[0010] The cam pair is arranged between the cam seat and the cam block, the cam block can be operated to rotate relative to the cam seat along with the locking shaft, the cam pair position of the cam block and the cam seat is changed, thereby the superposition part is compressed or released;

[0011] The locking handle is further arranged, and the locking handle is fixedly connected with the cam block.

[0012] Further, the lift of the cam pair is 0.5mm-0.8mm.

[0013] Further, the articulated lug is formed with a protruding part, and the articulated shaft is arranged in the protruding part.

[0014] The bushing assembly is further arranged, and the bushing assembly is sleeved with the articulated shaft and comprises a metal bushing, a nylon bushing and a welded bushing arranged in sequence.

[0015] Further, the upper steering column and the lower steering column are square tubular structures, the left side wall and the right side wall of the upper steering column are respectively extended downward to form articulated lugs, an articulated groove is formed between the two articulated lugs, the lower steering column is inserted into the articulated groove to form an articulation, and the locking shaft is located below the articulated shaft.

[0016] The mower of the utility model, comprising the steering system for the mower.

[0017] Further, the walking driving system is further arranged, and the walking driving system comprises front wheels and rear wheels, the front wheels are universal wheels, and the universal wheels have the freedom of reciprocating up and down.

[0018] The front bridge is further arranged in a transverse mode, the universal wheels are two and are correspondingly arranged at two ends of the front bridge, the two ends of the front bridge have the freedom of swinging up and down relative to the longitudinal middle surface of the frame of the mower, so that the universal wheels have the freedom of reciprocating up and down.

[0019] The limiting pieces are arranged on the transverse sides of the longitudinal middle surface of the frame, and the limiting pieces are used for limiting the swinging range of the front bridge downward.

[0020] The utility model discloses the steering system for the mower and the mower, the structure of the steering system is improved, the included angle between the upper steering column and the lower steering column is adjusted to make the pitch angle of the steering wheel adjustable, can adapt to the driving demand of different drivers, improves the driving experience, meets the requirement of ergonomics, and when transporting, the angle of the upper steering column can be adjusted to reduce the packaging space occupied by the steering system, and the transportation cost can be saved. BRIEF DESCRIPTION OF DRAWINGS

[0021] The utility model will be further described in connection with the drawings and examples:

[0022] Figure 1 It is a structural diagram of the utility model;

[0023] Figure 2 for Figure 1 A partial cross-sectional view of

[0024] Figure 3 This is a schematic diagram of the structure of the steering system when it is installed on the lawn mower and the articulated shaft is in a disassembled state;

[0025] Figure 4 It is a structural diagram of the walking drive system;

[0026] Figure 5 for Figure 4 A partial cross-sectional view of

[0027] The above drawings include the following reference numerals:

[0028] 1. Upper steering column; 101. Articulated ear; 1011. Protrusion; 2. Lower steering column; 3. Articulated shaft; 4. Locking handle; 5. Locking shaft; 6. Locking piece; 601. Cam seat; 602. Cam block; 7. Steering wheel; 8. Bushing assembly; 9. Front wheel; 10. Bracket; 11. Front bridge; 12. Limiting piece; 13. Rear wheel; 14. Frame. DETAILED DESCRIPTION

[0029] Figure 1 This is a schematic diagram of the structure of the utility model. Figure 2 for Figure 1 A partial cross-sectional view of Figure 3 This is a structural diagram of the steering system installed on the lawn mower with the articulated shaft in a disassembled state. Figure 4 It is the structural diagram of the walking drive system. Figure 5 for Figure 4 A partial cross-sectional view of Figures 1-5 As shown in the figure: the steering system for a lawn mower of this embodiment includes a steering wheel 7 and a steering column, wherein the steering wheel 7 and the steering column are located directly in front of the lawn mower seat, and the steering column includes an upper steering column 1 and a lower steering column 2. The steering wheel 7 is installed on the upper steering column 1, and the angle between the upper steering column 1 and the lower steering column 2 is adjustable and can be locked, so that the pitch angle of the steering wheel 7 is adjustable; the steering wheel 7 and the steering column are located directly in front of the lawn mower seat, that is, on the longitudinal center line of the lawn mower frame. By adjusting the angle between the upper steering column 1 and the lower steering column 2, the angle between the upper steering column 1 and the lower steering column 2 can be adjusted by adopting a hinged connection between the upper steering column 1 and the lower steering column 2, so that the pitch angle of the steering wheel 7 can be adjusted (rotated with the left and right axis of the lawn mower as the rotation axis), which is convenient for adapting to users of different body shapes, thereby improving the user experience.

[0030] In the prior art, the pitch angle of the steering mechanism on the mower cannot be adjusted relative to the driver, resulting in that the driver is not in the most comfortable position relative to the driver when using, and the operation experience is poor; the steering system for the mower improves the structure of the steering system, adjusts the included angle between the upper steering column 1 and the lower steering column 2, so that the pitch angle of the steering wheel 7 is adjustable, can adapt to the driving needs of different drivers, improve the driving experience, meet the ergonomic requirements, and at the same time, during transportation, the angle of the upper steering column 1 can be adjusted to reduce the packaging space occupied by the steering system, thereby saving transportation costs.

[0031] In the embodiment, the upper steering column 1 is hinged to the lower steering column 2 through a hinge shaft 3, so that the included angle between the upper steering column 1 and the lower steering column 2 is adjustable; in the structure, the hinge shaft 3 is a bolt type hinge shaft 3, so that the included angle between the upper steering column 1 and the lower steering column 2 is adjusted.

[0032] In the embodiment, the upper steering column 1 extends downward to form a hinge lug 101, the lower steering column 2 is overlapped with the hinge lug 101 to form an overlapping portion, and the hinge shaft 3 passes through the overlapping portion to form the hinge; in the structure, the hinge lug 101 can be a U-shaped groove structure, the hinge lug 101 is wrapped around the lower end of the upper steering column 1 and is fixedly connected with the upper steering column 1, and the lower steering column 2 is overlapped with the hinge lug 101 and is hinged through the hinge shaft 3, so that the overall structure is simple.

[0033] In the embodiment, a locking mechanism is further included, which includes a locking shaft 5 and a locking piece 6, the locking shaft 5 passes through the overlapping portion and applies a force to the overlapping portion through the locking piece 6, so that the overlapping portion is locked; in the structure, the locking can also be directly performed by the assembly of the locking piece 6 and the gasket, for example, when the locking piece 6 is a bolt, the bolt penetrates the overlapping portion, and after the bolt is tightened, a friction force is formed between the hinge lug 101 and the lower steering column 2, so that the locking is realized, of course, other structures can also be used, the locking shaft 5 penetrates the overlapping portion and applies a force to the overlapping portion through the locking piece 6, so that the hinge lug 101 is pressed against the lower steering column 2, and the locking is realized.

[0034] In the embodiment, the locking piece 6 is a cam pair, the cam pair includes a cam seat 601 and a cam block 602, the cam seat 601 is limited in rotational freedom, and the cam block 602 is followed in rotational freedom with the locking shaft;

[0035] The cam block 602 can be operated to rotate relative to the cam seat 601 along with the locking shaft, change the cam cooperation position of the cam block 602 and the cam seat 601, and thus be used for compressing or releasing the superimposed part; one end of the cam seat 601 is installed on the lower steering column 2, so that the lower steering column 2 can limit the cam seat 601, and the cam block 602 and the cam seat 601 are in cam pair cooperation, so that by rotating the cam block 602, the orientation of the cam pair cooperation is changed, that is, the distance between the cam block 602 and the cam seat 601 is changed, so that locking or releasing is realized; the structure of the cam seat 601 and the cam block 602 is the application of the prior art, and will not be described here; the locking shaft 5 is a bolt type locking shaft 5, which can be a stepped bolt; the locking shaft 5 penetrates the locking part 6 and the superimposed part and is fixed by a nut.

[0036] The locking handle 4 is further included and is fixedly connected with the cam block 602; the locking handle 4 is fixedly connected with the cam block 602, so that the cam block 602 is driven to rotate by operating the locking handle 4.

[0037] In the embodiment, the lift of the cam pair is 0.5mm-0.8mm; the lift is the height difference between the lowest point and the highest point in the cam shaft direction, and is preferably 0.7mm; the cam block 602 is rotated to push the cam seat 601 to compress the superimposed part, and the locking of the upper steering column 1 and the lower steering column 2 is realized.

[0038] In the embodiment, the hinge ear 101 is formed with a protruding part 1011, and the hinge shaft 3 is arranged on the protruding part 1011; at the hinge shaft 3, the hinge ear 101 is formed with the protruding part 1011, that is, the diameter at this position is greater than the diameter of the upper steering column 1;

[0039] The bushing assembly 8 is further included and is sleeved on the hinge shaft 3 and includes a metal bushing, a nylon bushing and a welded bushing arranged in sequence; the metal bushing is arranged on the outside of the hinge shaft 3, the nylon bushing is arranged on the outside of the metal bushing, and the welded bushing is arranged on the outside of the nylon bushing; the bushing assembly 8 is arranged on the protruding part 1011 in correspondence, the protruding part 1011 is formed on the hinge ear 101, the bushing assembly 8 is facilitated to be installed, and the connection strength of the connection between the upper steering column 1 and the lower steering column 2 can be increased;

[0040] In this embodiment, the upper steering column 1 and the lower steering column 2 are square tubular structures, the left and right side walls of the upper steering column 1 respectively extend downward to form hinged ears 101, a hinged groove is formed between the two hinged ears 101, the lower steering column 2 extends into the hinged groove to form a hinge, and the locking shaft 5 is located below the hinged shaft 3; the hinged ears 101 can be welded with the sheet metal parts of the upper steering column, or directly formed by extending the left and right side walls of the upper steering column 1 downward, the upper steering column 1 and the lower steering column 2 are square tubular structures, thereby having better load bearing capacity; left and right are relative to the left and right directions of the mower, and the locking shaft is located above the hinged shaft in the up and down direction of the mower.

[0041] The mower of this embodiment comprises the steering system for the mower.

[0042] In this embodiment, a walking driving system is further included, comprising front wheels 9 and rear wheels 13, the front wheels 9 are universal wheels, the universal wheels have the freedom of reciprocating up and down, and the front wheels 9 and the rear wheels 13 are at least two respectively, since the front wheels 9 have the freedom of reciprocating up and down (up and down are relative to the up and down direction of the mower), thereby when the mower travels on uneven road surface, the front wheels 9 can be automatically adjusted to adapt to the uneven road surface, thereby making the travel smooth, and the rear wheels 13 are electrically driven wheels.

[0043] A front bridge 11 arranged transversely is further included, the universal wheels are two and correspondingly arranged at two ends of the front bridge 11 respectively, the two ends of the front bridge 11 have the freedom of swinging up and down relative to the longitudinal mid-plane of the frame 14 of the mower, so that the universal wheels have the freedom of reciprocating up and down, the longitudinal mid-plane is relative to the front and back direction of the frame 14, and the transverse direction is relative to the left and right direction of the frame, the universal wheels are installed at the two ends of the front bridge 11 through a support 10, and the connection mode of the universal wheels and the front bridge 11 is the application of the prior art, which will not be described here, the front bridge 11 is hinged to the front cross beam of the frame 14, thereby the two ends of the front bridge 11 have the freedom of swinging up and down.

[0044] A limiting piece 12 is further included, the limiting piece 12 is arranged on the transverse sides of the longitudinal mid-plane of the frame 14, and the limiting piece 12 is used for limiting the amplitude of downward swinging of the front bridge 11; the limiting piece 12 is arranged on the transverse sides of the longitudinal mid-plane of the frame, and the transverse direction is relative to the left and right direction of the mower, thereby when the front bridge 11 swings downward, the amplitude of downward swinging of the front bridge 11 can be limited, and the limiting piece 12 can be a movable structure or a fixed block welded on the frame 14.

[0045] The turning system for the mower and the mower can make the locking shaft 5 become the hinging point of the upper turning column 1 and the lower turning column 2 by disassembling the hinging shaft 3, so that the upper turning column 1 and the steering wheel 7 can be laid down by adjusting the included angle between the upper turning column 1 and the lower turning column 2, that is, the upper turning column 1 and the steering wheel 7 can be relatively parallel to the frame of the mower, so that the transportation space and the packaging space of the mower can be saved to the maximum, thereby saving the transportation cost, and the hinging shaft 3 can be installed again after the transportation is completed.

[0046] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A steering system for a lawnmower, characterised in that: The steering system for the mower comprises a steering wheel and a steering column, the steering wheel and the steering column are located in front of the seat of the mower, the steering wheel is installed on the upper steering column, and the included angle between the upper steering column and the lower steering column is adjustable and lockable, so that the pitch angle of the steering wheel is adjustable.

2. A steering system for a lawnmower according to claim 1, characterised in that: The upper steering column is hinged to the lower steering column through a hinge shaft, so that the included angle between the upper steering column and the lower steering column is adjustable.

3. A steering system for a lawnmower according to claim 2, characterised in that: The upper steering column extends downward to form a hinge lug, the lower steering column overlaps the hinge lug to form an overlapping part, and the hinge shaft passes through the overlapping part to form the hinge.

4. A steering system for a lawnmower according to claim 3, characterised in that: A locking mechanism is further included, which comprises a locking shaft and a locking piece, the locking shaft passes through the overlapping part and applies a force to the overlapping part through the locking piece, so that the overlapping part is locked.

5. A steering system for a lawnmower according to claim 4, characterised in that: The locking piece is a cam pair, which comprises a cam seat and a cam block, the cam seat is limited in rotational freedom, and the cam block follows the locking shaft in rotational freedom; The cam pair is matched between the cam seat and the cam block, the cam block can be operated to rotate relative to the cam seat with the locking shaft, change the cam matching position of the cam block and the cam seat, and thus be used for compressing or releasing the overlapping part; A locking handle is further included, which is fixedly connected with the cam block.

6. A steering system for a lawnmower according to claim 5, characterised in that: The lift of the cam pair is 0.5mm-0.8mm.

7. The turning system for a lawnmower according to claim 3, characterized in that: The hinge lug is formed with a protruding part, and the hinge shaft is arranged in the protruding part. A bushing assembly is further included, which is sleeved on the hinge shaft and comprises a metal bushing, a nylon bushing and a welded bushing arranged in sequence.

8. The turning system for a lawn mower of claim 4, wherein: The upper steering column and the lower steering column are square tubular structures, the left side wall and the right side wall of the upper steering column respectively extend downward to form hinge lugs, a hinge groove is formed between the two hinge lugs, the lower steering column extends into the hinge groove to form a hinge, and the locking shaft is located below the hinge shaft.

9. A lawnmower characterised in that: The steering system for the mower comprises a steering wheel and a steering column, the steering wheel and the steering column are located in front of the seat of the mower, the steering wheel is installed on the upper steering column, and the included angle between the upper steering column and the lower steering column is adjustable and lockable, so that the pitch angle of the steering wheel is adjustable.

10. The lawnmower as claimed in claim 9, characterized in that: The upper steering column is hinged to the lower steering column through a hinge shaft, so that the included angle between the upper steering column and the lower steering column is adjustable. The upper steering column extends downward to form a hinge lug, the lower steering column overlaps the hinge lug to form an overlapping part, and the hinge shaft passes through the overlapping part to form the hinge. A locking mechanism is further included, which comprises a locking shaft and a locking piece, the locking shaft passes through the overlapping part and applies a force to the overlapping part through the locking piece, so that the overlapping part is locked. The locking piece is a cam pair, which comprises a cam seat and a cam block, the cam seat is limited in rotational freedom, and the cam block follows the locking shaft in rotational freedom; The cam pair is matched between the cam seat and the cam block, the cam block can be operated to rotate relative to the cam seat with the locking shaft, change the cam matching position of the cam block and the cam seat, and thus be used for compressing or releasing the overlapping part; A locking handle is further included, which is fixedly connected with the cam block. The lift of the cam pair is 0.5mm-0.8mm. The hinge lug is formed with a protruding part, and the hinge shaft is arranged in the protruding part. A bushing assembly is further included, which is sleeved on the hinge shaft and comprises a metal bushing, a nylon bushing and a welded bushing arranged in sequence. The upper steering column and the lower steering column are square tubular structures, the left side wall and the right side wall of the upper steering column respectively extend downward to form hinge lugs, a hinge groove is formed between the two hinge lugs, the lower steering column extends into the hinge groove to form a hinge, and the locking shaft is located below the hinge shaft. The steering system for the mower comprises a steering wheel and a steering column, the steering wheel and the steering column are located in front of the seat of the mower, the steering wheel is installed on the upper steering column, and the included angle between the upper steering column and the lower steering column is adjustable and lockable, so that the pitch angle of the steering wheel is adjustable. The steering system for the mower comprises a steering wheel and a steering column, the steering wheel and the steering column are located in front of the seat of the mower, the steering wheel is installed on the upper steering column, and the included angle between the upper steering column and the lower steering column is adjustable and lockable, so that the pitch angle of the steering wheel is adjustable.

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