Lawn mower, outdoor garden vehicle and steering mechanism

Abstract

The utility model relates to a mower and a steering mechanism. The mower comprises a frame, a seat, a header, a power mechanism, a battery pack and the steering mechanism, the steering mechanism comprises a pivot seat and a steering rod, shaft holes are formed in the pivot seat and the steering rod along a second axis, a rotating shaft jointly penetrates through the shaft holes of the pivot seat and the steering rod, and at least one end of the rotating shaft is provided with a nut to limit the rotating shaft to be located in the shaft holes of the pivot seat and the steering rod. The rotating shaft penetrates through a disc spring which enables the pivoting base and the steering rod to abut against each other. The disc spring is additionally arranged at the joint of the steering rod and the pivoting seat, and the disc spring is small in axial occupied volume and has the volume advantage of being convenient for space planning; meanwhile, a gap between the steering rod and the pivoting seat is eliminated due to the disc spring, so that the steering rod does not have idle stroke when being poked by a user to rotate back and forth, and the discomfort of damping sudden change caused by the idle stroke is not felt.

Description

[Technical field]

[0001] The utility model relates to the technical field of gardening operation vehicles, in particular to a lawn mower, an outdoor gardening vehicle and a steering mechanism. [Background Technology]

[0002] Outdoor gardening operation vehicles generally refer to vehicles used for outdoor gardening operations, mainly including vehicles used for cutting and maintaining garden grass.

[0003] The lawn mower is one of the gardening vehicles that has developed rapidly in recent years. It is provided with a cutting knife for cutting and maintaining the grass on the ground. When working, it is manually controlled and walks on the grass. The lawn mower is provided with two steering rods for users to control. When the user pushes the steering rod on one side forward, the driving wheel on the corresponding side rotates forward, thereby realizing the control of the forward and backward movement of the lawn mower. In the prior art, users generally feedback that the control of the steering rod is uncomfortable, especially there is a sense of segmentation when pushing the steering rod. Specifically, when the steering rod starts to be pushed in a certain direction, there will be a feeling of a sudden change from a smaller damping stage to a larger damping stage at the initial stage of the steering rod movement, which has a greater impact on the user experience.

[0004] In view of this, it is indeed necessary to provide a lawn mower, an outdoor garden vehicle and a steering mechanism to overcome the defects of the prior art. [Contents of the utility model]

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a lawn mower, an outdoor garden vehicle and a steering mechanism, which are used to avoid the technical problem of a sudden change in damping when the steering rod is toggled.

[0006] The technical solution adopted by the utility model to solve the existing technical problems is:

[0007] A steering mechanism for a lawn mower, comprising:

[0008] A pivot seat, pivotally connected to the left and right sides of the lawn mower frame, is used to rotate the pivot seat around a first axis between a first forward position and a second backward position, and when the pivot seat rotates forward around the first axis, the driving wheel on the corresponding side of the lawn mower is controlled to rotate forward;

[0009] A steering rod, pivotally connected to the pivot seat, for enabling the steering rod to rotate between a first outer position and a second inner position around a second axis; the steering rod cannot rotate around the first axis when it is at the first outer position, and can rotate around the first axis and drive the pivot seat to rotate synchronously when it is at the second inner position;

[0010] The pivot seat and the steering rod are provided with shaft holes along the second axis, the shaft holes of the pivot seat and the steering rod are penetrated by a rotating shaft, and the rotating shaft is penetrated by a disc spring for making the pivot seat and the steering rod abut against each other.

[0011] A further improvement is that the steering rod at least partially abuts against the outer wall of the pivot seat in the direction of the second retreat position in the direction of the second axis, and the disc spring is located at the front side or rear side of the steering rod and the pivot seat along the direction of the first axis.

[0012] A further improvement is that the disc spring does not deform when the steering rod moves in the direction of the first forward position.

[0013] A further improvement is that at least two disc springs are provided to form a combined disc spring.

[0014] A further improvement is that two adjacent disc springs are arranged in the same direction and abut against each other.

[0015] A further improvement is that two adjacent disc springs are arranged in opposite directions and abut against each other.

[0016] A further improvement is as follows: three disc springs are provided and abut against each other, wherein two adjacent disc springs on one side are provided in the same direction, and two adjacent disc springs on the other side are provided in opposite directions.

[0017] A further improved solution is: the rotating shaft is penetrated by a friction block located between the steering rod and the pivot seat, and the friction block is used to generate sliding friction relative to the steering rod or the pivot seat.

[0018] A further improvement is that a straight washer is provided on one side of the disc spring.

[0019] The utility model discloses a lawn mower, comprising:

[0020] Frame;

[0021] A cutting platform connected to the frame, the cutting platform comprising a cutting knife that rotates to produce a mowing effect on the grass;

[0022] A power mechanism connected to the vehicle frame, wherein the power mechanism is drivingly connected to the first drive wheel and / or the second drive wheel;

[0023] A battery pack, connected to the vehicle frame, for supplying power to the power mechanism or the header;

[0024] The steering mechanism is symmetrically arranged on the left and right sides of the frame, and is used to control the power mechanism to rotate the driving wheels on the corresponding sides; the steering mechanism includes:

[0025] A pivot seat, pivotally connected to the left and right sides of the lawn mower frame, for rotating the pivot seat around a first axis between a first forward position and a second backward position, wherein when the pivot seat rotates forward around the first axis, the lawn mower drive wheel on the corresponding side is controlled to rotate forward;

[0026] A steering rod, pivotally connected to the pivot seat, for enabling the steering rod to rotate between a first outer position and a second inner position around a second axis; the steering rod cannot rotate around the first axis when it is at the first outer position, and can rotate around the first axis and drive the pivot seat to rotate synchronously when it is at the second inner position;

[0027] The pivot seat and the steering rod are provided with shaft holes along the second axis, the shaft holes of the pivot seat and the steering rod are penetrated by a rotating shaft, and the rotating shaft is penetrated by a disc spring for making the pivot seat and the steering rod abut against each other.

[0028] The utility model discloses an outdoor garden vehicle, comprising:

[0029] Frame;

[0030] A support platform connected to the frame, the support platform being used to support a user;

[0031] A working component connected to the frame, the working component is used for maintaining the garden;

[0032] A power mechanism connected to the vehicle frame, wherein the power mechanism is drivingly connected to the first drive wheel and / or the second drive wheel;

[0033] A battery pack, connected to the vehicle frame, for supplying power to the power mechanism or the header;

[0034] The steering mechanism is symmetrically arranged on the left and right sides of the frame, and is used to control the power mechanism to rotate the driving wheels on the corresponding sides; the steering mechanism includes:

[0035] A pivot seat, pivotally connected to the left and right sides of the lawn mower frame, is used to rotate the pivot seat around a first axis between a first forward position and a second backward position, and when the pivot seat rotates forward around the first axis, the driving wheel on the corresponding side is controlled to rotate forward;

[0036] A steering rod, pivotally connected to the pivot seat, for enabling the steering rod to rotate between a first outer position and a second inner position around a second axis; the steering rod cannot rotate around the first axis when it is at the first outer position, and can rotate around the first axis and drive the pivot seat to rotate synchronously when it is at the second inner position;

[0037] The pivot seat and the steering rod are provided with shaft holes along the second axis, the shaft holes of the pivot seat and the steering rod are penetrated by a rotating shaft, and the rotating shaft is penetrated by a disc spring for making the pivot seat and the steering rod abut against each other.

[0038] Compared with the prior art, the utility model has the following beneficial effects:

[0039] The utility model adds a disc spring at the connection between the steering rod and the pivot seat. The disc spring occupies a small volume in the axial direction, and has a volume advantage that is convenient for space planning. At the same time, the existence of the disc spring eliminates the gap between the steering rod and the pivot seat, so that there is no idle travel when the steering rod is rotated forward and backward by the user, and the discomfort of sudden damping change caused by the idle travel will not be felt.

[0040] In the utility model, the steering rod is arranged at a position of the pivot seat close to the rear side of the vehicle. When the steering rod is pushed forward by the user, the power is directly transmitted to the pivot seat and a power signal is immediately sent to the power mechanism, thereby reducing the delay felt by the user from pushing the steering rod to the rotation of the driving wheel.

[0041] The utility model discloses a combined disc spring composed of a plurality of disc springs. Firstly, the arrangement of the plurality of disc springs will not obviously increase the occupied space. Secondly, the combination of the plurality of disc springs can provide the assemblers with a larger operating space. When the components around the disc springs need to occupy a larger or smaller space due to manufacturing tolerances, the occupied space can be adjusted to a certain extent by adjusting the orientation of adjacent disc springs, thereby increasing the fault tolerance of the assembly, improving the product yield and reducing the manufacturing cost. [Drawings]

[0042] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings:

[0043] Figure 1 It is a three-dimensional view of the lawn mower of the utility model;

[0044] Figure 2 It is a three-dimensional view of the steering mechanism;

[0045] Figure 3 It is a partial exploded schematic diagram of the steering mechanism;

[0046] Figure 4 is a partial cutaway schematic diagram of a steering mechanism;

[0047] Figure 5 It is a structural schematic diagram of the fixed plate.

[0048] Meaning of the reference numerals in the figures:

[0049] 1. Frame; 2. Seat; 3. Cutting platform; 4. Battery pack; 5. Steering rod; 6. Pivot seat; 7. First axis; 8. Second axis; 9. Rotating shaft; 10. Disc spring; 11. Washer; 12. Friction block; 13. Fixing plate; 131. First groove; 132. Second groove; 14. Nut. [Specific implementation method]

[0050] The terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. For example, the words "upper", "lower", "front", "back" and the like indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0051] Unless otherwise specified, the terms "disposed", "connected" and "connected" in this utility model should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. "Fixed connection" in this utility model should also be understood in a broad sense as integral molding or welding or connection through other fasteners.

[0052] See also Figure 1 , shown is a lawn mower disclosed in the utility model, the lawn mower comprises a frame 1, a cutting table 3, a power mechanism, a battery pack 4 and a steering mechanism, the frame 1 extends along the forward direction of the vehicle, a first driving wheel and a second driving wheel are respectively arranged on both sides of the frame 1, the power mechanism and the battery pack 4 are both connected to the frame 1, the power mechanism is connected to the first driving wheel and / or the second driving wheel by transmission, and is used to rotate the driving wheel to drive the lawn mower forward or backward; the cutting table 3 is connected to the frame 1, and the cutting table 3 comprises a cutting knife that rotates to produce a mowing effect on the grass;

[0053] The above-mentioned power mechanism can be a single power source or two power sources. When it is a single power source, the power of the power source needs to be output to the two drive wheels through the transmission structure, and a speed change mechanism for changing the transmission ratio needs to be set between each drive wheel and the power source, so that when the output speed of the power source remains unchanged, the speed of the two drive wheels can be differentially changed under the action of the speed change mechanism, and the transmission ratio of the speed change mechanism can be adjusted in real time according to user needs, so that the two drive wheels have a speed difference to realize the turning of the lawn mower.

[0054] When the lawn mower has two power sources, the power of the two power sources is output to a driving wheel respectively. At this time, a speed change mechanism with an unadjustable transmission ratio can be set between the power source and the driving wheel, or no speed change mechanism is set. Then, the speed of the driving wheel is adjusted by adjusting the output speed of the power source, so that the two driving wheels have a speed difference and the lawn mower can turn.

[0055] In addition, the lawn mower also includes a steering mechanism for adjusting the rotation speed of the driving wheel. The steering mechanism includes a pivot seat 6 and a steering rod 5, which are pivotally connected to the left and right sides of the lawn mower frame 1, and are used to rotate the pivot seat 6 around the first axis 7 between a first forward position and a second backward position. The first axis 7 is parallel to the left and right directions of the vehicle. When the pivot seat 6 rotates forward around the first axis 7, the driving wheel on the corresponding side of the lawn mower is controlled to rotate forward. Conversely, when the pivot seat 6 rotates backward around the first axis 7, the driving wheel on the corresponding side of the lawn mower is controlled to rotate backward. The rotation amount of the pivot seat 6 is positively correlated with the rotation speed of the driving wheel on the corresponding side, that is, the greater the rotation amount of the pivot seat 6, the higher the rotation speed of the driving wheel on the corresponding side. Specifically, the rotation amount of the pivot seat 6 can be identified by an angle sensor, and then the rotation speed of the driving wheel can be adjusted accordingly. This is a technical means known to those skilled in the art and will not be elaborated here.

[0056] When the rotation amounts of the pivot seats 6 on both sides of the frame 1 are inconsistent, the rotational speeds of the two drive wheels will be different and a turn will be achieved; for example, when the forward rotation amount of the left pivot seat 6 is greater than that of the right side, the rotational speed of the drive wheel on the left side is higher than that of the right side, and the left drive wheel of the lawn mower rotates per unit time so that the displacement of the left drive wheel of the lawn mower is greater than that of the right side, and the lawn mower turns right at this time; conversely, if the forward rotation amount of the left pivot seat 6 is less than that of the right side, the lawn mower turns left.

[0057] In particular, when the pivot seat 6 rotates backward, the drive wheel on the corresponding side should rotate backward. At this time, the rotation amount of the pivot seat 6 should be understood as a negative value; such as when the left pivot seat 6 is stationary, the right pivot seat 6 rotates backward, the left drive wheel does not move, and the right drive wheel rotates backward, that is, the right side of the lawn mower moves backward and it appears that the lawn mower rotates to the right with the left drive wheel of the lawn mower as the center. The lawn mower still appears to turn right, and the rotation amount of the left pivot seat 6 is zero, which is greater than the rotation amount of the right pivot seat 6 which is a negative value.

[0058] The steering rod 5 is pivotally connected to the pivot seat 6, and is used to rotate the steering rod 5 around the second axis 8 between a first outer position and a second inner position; the second axis 8 is parallel to the front and rear direction of the vehicle, and the steering rod 5 cannot rotate around the first axis 7 when it is in the first outer position.

[0059] The inability to rotate around the first axis 7 can be achieved in a variety of ways, such as using a plate or other device to limit the position of the steering rod 5. Figure 2 In this embodiment, a fixing plate 13 is provided on the frame 1, and a T-shaped groove is provided on the fixing plate 13, and the steering rod 5 passes through the T-shaped groove. Figure 5As shown, the T-slot includes a first slot 131 extending along the second axis 8 and a second slot 132 extending along the first axis 7. The second slot 132 is connected to one side of the first slot 131 to form a T-shaped structure. The second outer position is the side where the steering rod 5 is located in the second slot 132 and away from the first slot 131. At this time, the front and rear directions of the steering rod 5 (the front and rear directions of the lawn mower) are resisted by the inner wall of the T-slot and cannot move; similarly, when the steering rod 5 is located in the first slot 131 and not located at the connection between the first slot 131 and the second slot 132, the left and right directions of the steering rod 5 (the left and right directions of the lawn mower) are resisted by the inner wall of the T-slot and cannot move.

[0060] When the steering rod 5 is located at the second inner position, it can rotate around the first axis 7 and drive the pivot seat 6 to rotate synchronously, that is, at this time, the steering rod 5 has only one degree of freedom to rotate around the first axis 7 relative to the pivot seat 6; when the steering rod 5 is located at the connection between the first groove 131 and the second groove 132, the steering rod 5 has two degrees of freedom relative to the frame 1, and the two degrees of freedom are the degree of freedom to rotate around the first axis 7 and the degree of freedom to rotate around the second axis 8; the state where the steering rod 5 is located at the connection between the first groove 131 and the second groove 132 can also be understood as the steering rod 5 being located in the first groove 131 and the second groove 132 at the same time, and the other position states of the steering rod 5 are that it is only located in the first groove 131 or only located in the second groove 132. When the steering rod 5 is only located in the first groove 131 or it is only located in the second groove 132, the steering rod 5 has only one degree of freedom. When the steering rod 5 is only located in the first slot 131 , it has the freedom to rotate around the first axis 7 ; when the steering rod 5 is only located in the second slot 132 , it has the freedom to rotate around the second axis 8 .

[0061] Reference Figure 3 , Attachment Figure 4 The pivot seat 6 and the steering rod 5 are provided with shaft holes along the second axis 8, and the shaft holes of the pivot seat 6 and the steering rod 5 are penetrated by a rotating shaft 9, at least one end of the rotating shaft 9 is provided with a nut 14 to limit the rotating shaft 9 to be located in the shaft holes of the pivot seat 6 and the steering rod 5, and the rotating shaft 9 is penetrated by a disc spring 10 for making the pivot seat 6 and the steering rod 5 abut against each other. The cooperation of the rotating shaft 9 and the disc spring 10 makes it possible for the steering rod 5 and the pivot seat 6 to have no gap in the direction of the second axis 8, that is, when the steering rod 5 is located at any position of the first slot 131, when the steering rod 5 is pushed forward or backward by the user, The motion state will be instantly transmitted to the pivot seat 6, that is, the steering rod 5 has no idle travel in the direction of the second axis 8; on the contrary, if the disc spring 10 is not provided, there will be a certain gap between the pivot seat 6 and the steering rod 5 in the direction of the second axis 8. At this time, when the user moves the steering rod 5 forward or backward, the steering rod 5 will inevitably move across the above gap and contact the pivot seat 6 before driving the pivot seat 6 to move and rotate. The process of the steering rod 5 crossing the gap is an idle travel. The existence of this idle travel will make the user's operating experience worse; specifically, it is manifested as follows:

[0062] ① The damping of the idle stroke must be small. When the user turns the steering rod 5, he will obviously feel a sudden change from very small damping to slightly larger damping. The change in damping makes the user feel uncomfortable.

[0063] ②. The idle stroke has low damping, which causes the steering rod 5 to shake easily during the driving of the lawn mower. This shaking inevitably generates noise and affects the user experience.

[0064] ③ The existence of the idle stroke makes it inconvenient for the user to adjust the vehicle speed by turning the steering rod 5: if the steering rod 5 is turned to the front end of the first slot 131, the driving wheel should be controlled to rotate to the maximum speed in theory, but due to the existence of the idle stroke, the pivot seat 6 does not reach its maximum forward rotation (i.e., the first front position), that is, the driving wheel does not reach its maximum speed;

[0065] ④. The idle stroke makes it difficult to accurately control the speed. When the lawn mower is expected to keep running in a straight line, the two steering rods 5 should generally be controlled to maintain the same position. However, due to the existence of the idle stroke, the actual rotation angles of the two pivot seats 6 are not the same, especially when one steering rod 5 is moved forward and the other steering rod 5 is moved backward and the deflection angles of the two steering rods 5 are consistent, the actual rotation angle difference of the two pivot seats 6 is the largest. In addition, if there is a difference in the idle stroke of the two steering rods 5, the user experience will be worse.

[0066] In this embodiment, a disc spring 10 is added to keep the pivot seat 6 and the steering rod 5 in contact. When the user moves the steering rod 5 forward or backward in the direction of the second axis 8, the steering rod 5 will immediately drive the pivot seat 6 to start rotating, that is, the various problems of the aforementioned idle stroke do not exist.

[0067] The disc spring 10 is a butterfly spring, which is generally a circular ring structure whose inner and outer ends are not in the same plane. Since its two ends are not in the same plane, it will deform when squeezed and store external power, that is, it has an elastic effect; but the disc spring 10 is different from ordinary springs. Its structure is relatively flat and occupies a smaller axial space. The narrow position where the pivot seat 6 and the steering rod 5 are connected is more convenient for space planning. Although ordinary springs can also achieve the aforementioned problem of avoiding empty travel, it will cause more space to be occupied. The use of disc spring 10 can effectively reduce the overall volume and still maintain good technical effects. At the same time, although the disc spring 10 is small in size and the amount of deformation it can produce is also small, the range of elastic force it can withstand is larger, and when multiple disc springs 10 are used in combination, they are also easier to assemble than ordinary springs. Figure 3 , Attachment Figure 4 Three disc springs 10 are selected.

[0068] In this embodiment, the steering rod 5 at least partially abuts against the outer wall of the second retreat position direction of the pivot seat 6 in the direction of the second axis 8. The abutment here is direct or indirect. The disc spring 10 is located on the front side or the rear side of the steering rod 5 and the pivot seat 6. The steering rod 5 is arranged near the second retreat position direction of the pivot seat 6 so that when the user pushes the steering rod 5 forward, the steering rod 5 can directly transmit power to the pivot seat 6 instead of transmitting it to the pivot seat 6 through the disc spring 10. Because the disc spring 10 is an elastic component, it will deform when it is squeezed. If the disc spring 10 is arranged between the steering rod 5 and the pivot seat 6, it will cause the user to first squeeze the disc spring 10 when pushing the steering rod 5, and the disc spring 10 will then transmit the pressure to the pivot seat 6. At this time, the deformation amount generated by the disc spring 10 is the invalid stroke of the steering rod 5, which will reduce the user experience. In summary, the disc spring 10 does not deform when the steering rod 5 moves in the direction of the first forward position.

[0069] It is particularly noted that if a disc spring 10 is configured between the pivot seat 6 and the steering rod 5 so as not to be deformed under normal user operating force, it should not be understood as exceeding the aforementioned protection range, because the disc spring 10 does not deform at this time, and its actual meaning is a rigid gasket. The provision of a rigid gasket should be understood as the steering rod 5 indirectly abutting against the pivot seat 6 through a gasket.

[0070] There are at least two disc springs 10 to form a combined disc spring. Figure 3 , 4 In this embodiment, three disc springs 10 are provided, two of which are provided in the same direction and abut against each other, and two of which are provided in the opposite direction and abut against each other. Figure 4 It can be clearly observed that the two disc springs 10 on the left side of the figure are arranged in opposite directions, and the two disc springs 10 on the right side are arranged in the same direction. When the two disc springs 10 are in opposite directions to form a combined disc spring, the deformability of the combined spring is obviously larger but the stiffness coefficient is smaller; conversely, when the two disc springs 10 are in the same direction to form a combined disc spring, the deformability of the combined spring is smaller but the stiffness coefficient is larger. In addition, the configuration of other disc springs greater than two also meets the above situation.

[0071] It is worth noting that the axial dimension occupied by two disc springs arranged in the same direction and offsetting each other is smaller than that of the disc springs arranged in the opposite direction. Figure 4 As shown in the figure, the axial dimension occupied by the two disc springs on the left side is larger than the axial dimension of the two disc springs on the right side. It can be seen that in the actual assembly process, if it is found that a combination disc spring with a larger axial dimension is required due to manufacturing tolerance, it is only necessary to set more adjacent disc springs 10 to be set to abut in the opposite direction; conversely, when a combination disc spring with a smaller axial dimension is required, it is only necessary to set more adjacent disc springs 10 to be set to abut in the same direction; thereby increasing the tolerance rate of assembly, improving the yield rate of products, and reducing manufacturing costs.

[0072] Reference Figure 3 , Attachment Figure 4 In this embodiment, a friction block 12 is provided between the steering rod 5 and the pivot seat 6, so that when the steering rod 5 rotates around the second axis 8, the steering rod 5 or the pivot seat 6 rotates relative to the friction block 12 to generate sliding friction. The friction force is the damping of the steering rod 5 rotation. The magnitude of the damping value is related to the magnitude of the abutment force on the friction block 12, and the magnitude of the abutment force is related to the elastic force of the aforementioned disc spring 10. Therefore, the deformation of the disc spring 10 can be adjusted by adjusting the position of the nut 14 relative to the rotating shaft 9, thereby adjusting the damping magnitude when the steering rod 5 rotates. The friction block 12 in this embodiment is made of nylon, which has good wear resistance and the surface roughness can produce a relatively suitable damping magnitude.

[0073] A straight washer 11 is provided on one side of the disc spring 10. One side of the washer 11 directly abuts against the disc spring 10, and the other side directly abuts against the steering rod 5 or the pivot seat 6, so as to avoid excessive concentration of pressure at the abutting position, thereby reducing damage to the abutting surface.

[0074] Reference Figure 1 The lawn mower of the utility model also includes a support platform connected to the frame 1 and used to support the user, and the support platform can be a seat 2, in which case the lawn mower is a riding lawn mower. The cutting table 3 in the present application can also be replaced with other working parts, such as snow sweeping, snow blowing, mopping, sweeping and other parts, in which case it corresponds to other outdoor garden vehicles; further, the seat 2 in the present application can also be replaced with a standing platform, in which case it corresponds to a standing garden vehicle, especially a standing lawn mower and a standing snow blower.

[0075] The utility model is not limited to the above specific embodiments. A person skilled in the art can easily understand that there are many alternatives to the lawn mower and control handle of the utility model without departing from the principle and scope of the utility model. The protection scope of the utility model shall be based on the content of the claims.

Claims

1. A steering mechanism for a lawn mower, characterized in that: include: A pivot seat, pivotally connected to the left and right sides of the lawn mower frame, is used to rotate the pivot seat around a first axis between a first forward position and a second backward position, and when the pivot seat rotates forward around the first axis, the driving wheel on the corresponding side of the lawn mower is controlled to rotate forward; A steering rod, pivotally connected to the pivot seat, for enabling the steering rod to rotate between a first outer position and a second inner position around a second axis; the steering rod cannot rotate around the first axis when it is at the first outer position, and can rotate around the first axis and drive the pivot seat to rotate synchronously when it is at the second inner position; The pivot seat and the steering rod are provided with shaft holes along the second axis, the shaft holes of the pivot seat and the steering rod are penetrated by a rotating shaft, and the rotating shaft is penetrated by a disc spring for making the pivot seat and the steering rod abut against each other.

2. The steering mechanism for a lawn mower according to claim 1, characterized in that: The steering rod at least partially abuts against the outer wall of the pivot seat in the direction of the second retreat position in the second axis direction, and the disc spring is located at the front side or the rear side of the steering rod and the pivot seat along the first axis direction.

3. The steering mechanism for a lawn mower according to claim 1, characterized in that: The disc spring does not deform when the steering rod moves toward the first forward position.

4. The steering mechanism for a lawn mower according to claim 1, characterized in that: At least two disc springs are provided to form a combined disc spring.

5. The steering mechanism for a lawn mower according to claim 4, characterized in that: The two adjacent disc springs are arranged in the same direction and abut against each other.

6. The steering mechanism for a lawn mower according to claim 4, characterized in that: The two adjacent disc springs are arranged in opposite directions and abut against each other.

7. The steering mechanism for a lawn mower according to claim 4, characterized in that: The disc springs are arranged in three and abut against each other, wherein two adjacent disc springs on one side are arranged in the same direction, and two adjacent disc springs on the other side are arranged in opposite directions.

8. The steering mechanism for a lawn mower according to claim 1, characterized in that: The rotating shaft is penetrated by a friction block located between the steering rod and the pivot seat, and the friction block is used to generate sliding friction relative to the steering rod or the pivot seat.

9. A lawn mower, characterized in that: include: Frame; A cutting platform connected to the frame, the cutting platform comprising a cutting knife that rotates to produce a mowing effect on the grass; A power mechanism connected to the vehicle frame, wherein the power mechanism is drivingly connected to the first drive wheel and / or the second drive wheel; A battery pack, connected to the vehicle frame, for supplying power to the power mechanism or the header; The steering mechanism is symmetrically arranged on the left and right sides of the frame, and is used to control the power mechanism to rotate the driving wheels on the corresponding sides; the steering mechanism includes: A pivot seat, pivotally connected to the left and right sides of the lawn mower frame, for rotating the pivot seat around a first axis between a first forward position and a second backward position, wherein when the pivot seat rotates forward around the first axis, the lawn mower drive wheel on the corresponding side is controlled to rotate forward; A steering rod, pivotally connected to the pivot seat, for enabling the steering rod to rotate between a first outer position and a second inner position around a second axis; the steering rod cannot rotate around the first axis when it is at the first outer position, and can rotate around the first axis and drive the pivot seat to rotate synchronously when it is at the second inner position; The pivot seat and the steering rod are provided with shaft holes along the second axis, the shaft holes of the pivot seat and the steering rod are penetrated by a rotating shaft, and the rotating shaft is penetrated by a disc spring for making the pivot seat and the steering rod abut against each other.

10. An outdoor garden vehicle, characterized in that: include: Frame; A support platform connected to the frame, the support platform being used to support a user; A working component connected to the frame, the working component is used for performing maintenance operations on the garden; A power mechanism connected to the vehicle frame, wherein the power mechanism is drivingly connected to the first drive wheel and / or the second drive wheel; A battery pack, connected to the vehicle frame, for supplying power to the power mechanism or the header; The steering mechanism is symmetrically arranged on the left and right sides of the frame, and is used to control the power mechanism to rotate the driving wheels on the corresponding sides; the steering mechanism includes: A pivot seat, pivotally connected to the left and right sides of the lawn mower frame, is used to rotate the pivot seat around a first axis between a first forward position and a second backward position, and when the pivot seat rotates forward around the first axis, the driving wheel on the corresponding side is controlled to rotate forward; A steering rod, pivotally connected to the pivot seat, for enabling the steering rod to rotate between a first outer position and a second inner position around a second axis; the steering rod cannot rotate around the first axis when it is at the first outer position, and can rotate around the first axis and drive the pivot seat to rotate synchronously when it is at the second inner position; The pivot seat and the steering rod are provided with shaft holes along the second axis, the shaft holes of the pivot seat and the steering rod are penetrated by a rotating shaft, and the rotating shaft is penetrated by a disc spring for making the pivot seat and the steering rod abut against each other.

Images