Steering automatic reset mechanism and snow sweeper

Abstract

The utility model discloses a steering automatic reset mechanism and a snow sweeper. The steering automatic reset mechanism comprises a base, a first switch, a second switch, a rotating element, a shifting rod and an elastic element, and the base is provided with a first surface, a second surface and a center part; the first switch and the second switch are fixed in the first surface of the base, and the first switch and the second switch can be triggered and released by the rotating element respectively; the elastic element is fixed to the first surface of the base and has an initial position, the rotating element is restrained by the elastic element, when external force acts on the rotating element to enable the rotating element to rotate, the elastic element stores elastic potential energy, and when the external force is withdrawn from the rotating element, the elastic element retreats from the rotating element. And the elastic element releases elastic potential energy, so that the rotating element returns to the initial position.

Description

Technical Field

[0001] The utility model relates to the technical field of garden tools, in particular to a steering automatic reset mechanism for adjusting the discharging direction and snow blowers, lawn mowers, etc. including such a steering automatic reset mechanism. Background Art

[0002] A snow blower is a mechanical device for removing snow and is widely used in places such as roads, squares, parks, etc. The rotation direction of the snow discharge tube has an important impact on the working efficiency of the snow blower. Therefore, how to effectively and conveniently control the rotation direction of the snow discharge tube is a problem concerned by snow blower manufacturers and users. The main working component of the snow blower is the snow discharge tube, whose function is to discharge the snow cleared by the snow blower. Solutions in the prior art: Existing snow blowers mainly control the rotation direction of the snow discharge tube through manual adjustment or electric adjustment. For a snow blower with manual adjustment to control the rotation direction of the snow discharge tube, the snow blower needs to be stopped for adjustment, which is inconvenient to operate and affects the working efficiency. While for a snow blower with electric adjustment to control the rotation direction of the snow discharge tube, it can be adjusted during the working state, which is more labor-saving in operation and improves the working efficiency. Problems in the prior art: The existing control mechanism for electric adjustment to control the rotation direction of the snow discharge tube has a high cost and a relatively complex structure. This not only increases the manufacturing cost of the snow blower but also increases the difficulty of maintenance and repair. In addition, the complex structure may also affect the stability and reliability of the snow blower, thereby affecting its service life. Therefore, how to design a snow discharge tube steering control mechanism with low cost, simple structure, and convenient operation, and a steering automatic reset mechanism that can return the snow discharge tube to the initial position after releasing the control state is an urgent problem to be solved by current snow blower and lawn mower manufacturers. In addition, in the field of lawn mowers, there will also be an application prospect for a similar steering device. A riding lawn mower is a large mechanical tool for trimming lawns and vegetation and is widely used in real life. However, the existing lawn mower discs are in a fixed state. If a movable lawn mower disc is produced in the future, how to achieve the reciprocating movement and rotation of the lawn mower disc will be a major problem. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the above-mentioned requirements, provide a steering automatic reset mechanism that is convenient to operate, simple and labor-saving, and reliable, meet the snow blowing requirements of users to flexibly select the snow discharging direction, and improve the snow blowing efficiency and operating comfort.

[0004] The advantage of the utility model is that it provides an automatic steering reset mechanism, in which a rotating element squeezes the first switch and the second switch by rotating, thereby electrically conducting the snow-out steering actuator controlled by the first switch and the second switch; when the external force acting on the rotating element is removed, the rotating element is acted upon by the restoring force of the elastic element and returns to the initial state, thereby disconnecting the circuit of the first switch or the second switch; the operator does not need to stop and shut down the machine, but only needs to cancel the force applied to the rotating element to disconnect the circuit, thereby greatly reducing the difficulty of operation for the operator.

[0005] The advantage of the utility model is that it provides an automatic steering reset mechanism, the rotating element has an initial position, when the rotating element is in this position, the first switch and the second switch are in a disconnected state, after the rotating element is acted upon and rotated by an external force, due to the restraining effect of the elastic element, the rotating element will always be subjected to a force to return to the initial position, thereby cutting off the steering actuator controlled by the first switch and the second switch, thereby greatly increasing the safety performance of the operation, even if the operator's finger accidentally slips off the lever when operating the rotating element connected to the lever, due to the restoring force of the elastic element, the first switch and the second switch automatically enter the disconnected state, thereby avoiding the situation where the motor hurts people.

[0006] The advantage of the utility model is that it provides a steering automatic reset mechanism, the fastener passes through the second through hole of the rotating element and the hole / groove at the second end of the lever, and connects the rotating element and the lever, the lever, the rotating element, and the fastener are able to rotate around the central axis of the first through hole, so that the central axes of rotation are the same axis, the external force applied by the operator through the lever is maximized from the starting end to the final action on the first switch and the second switch end, and the force loss during the transmission process is also greatly reduced, thereby achieving the effect of labor-saving operation.

[0007] The advantage of the utility model is that it provides a steering automatic resetting mechanism, wherein the rotating element and the fastener are an integrally formed structure, and the fastener is formed by extending the rotating element toward one side of the base. This can reduce the use of parts and improve the stability of mechanical operation. The integral molding also reduces the number of processes, saves costs, and improves efficiency.

[0008] The advantage of the utility model is that it provides a steering automatic reset mechanism, wherein the first end of the lever extends beyond the base and forms a shift plate toward the base, and the plane where the shift plate is located is perpendicular to the second surface of the base. In this way, while satisfying the condition that the operator operates the lever, space is saved to the greatest extent, and the automatic reset mechanism is also made more compact.

[0009] The advantage of the present utility model is to provide a steering automatic reset mechanism. The first switch and the second switch are both microswitches with the same structure and are symmetrically distributed on the first surface of the base. The microswitch has a smaller size compared to traditional switches, so that the size of the automatic reset mechanism is reduced while meeting the functions.

[0010] The advantage of the present utility model is to provide a steering automatic reset mechanism. The receiving cavities are symmetrically formed on the first surface of the base, and the elastic element is partially constrained by the receiving cavities. Since the receiving cavities are integrally formed with the base during processing and manufacturing, there is no need to install additional parts to construct the receiving cavities. This approach can save costs, reduce processes, and lower the failure rate.

[0011] The advantage of the present utility model is to provide a steering automatic reset mechanism. The lever, the rotating element, and the fastener can rotate around the central axis of the first through hole. The rotating element is a base structure. One side of the rotating element facing the base has a pressing portion and a receiving portion. The pressing portion can contact and separate from the first switch and the second switch. The elastic element is partially constrained by the receiving portion. The elastic element is a spring. In terms of realizing the restoring force, the spring, as a commonly used standardized part, can save costs.

[0012] The advantage of the present utility model is to provide a steering automatic reset mechanism. The elastic element includes a first spring and a second spring. The first spring and the second spring are symmetrically arranged at the edge part of the base. The first end of the first spring is connected to the first edge of the base, the second end of the first spring is connected to the first side of the rotating element, the first end of the second spring is connected to the second edge of the base, and the second end of the second spring is connected to the second side of the rotating element. When the automatic reset mechanism needs to be updated and upgraded later, the installation positions of the first spring and the second spring are closer to the outer edge of the base, so that there is more space in the central part of the base for installing the supporting upgraded modules.

[0013] The advantage of the present utility model is to provide a snow sweeper. The snow discharging steering device of the snow sweeper adopts the steering automatic reset mechanism, which is convenient for the operator to adjust the snow discharging direction at any time and also convenient for the operator to fix the snow discharging direction at any time.

[0014] The present utility model further provides a steering automatic reset mechanism, and the steering automatic reset mechanism includes:

[0015] A base, the base having a first surface, a second surface, and a central part;

[0016] A first switch and a second switch, the first switch and the second switch being fixed to a first surface of the base, each of the first switch and the second switch having a conducting state and a non-conducting state;

[0017] A rotating element, the rotating element being rotatably fixed to the first surface of the base, and the first switch and the second switch being capable of being triggered and released by the rotating element respectively;

[0018] A lever, the lever having a first end that can be toggled and a second end connected to a second surface of the base, the rotating element and the second end of the lever having the same axis of rotation, such that the rotating element can rotate together with the lever;

[0019] An elastic element, the elastic element being fixed to the first surface of the base and having an initial position, the rotating element being constrained by the elastic element, when an external force acts on the rotating element to cause the rotating element to rotate, the elastic element stores elastic potential energy, when the external force is removed from the rotating element, the elastic element releases the elastic potential energy, such that the rotating element returns to the initial position.

[0020] According to an embodiment of the present invention, the present invention further provides a steering automatic reset mechanism, a central portion of the base having a first through hole for connecting the rotating element and the lever, the rotating element having a second through hole, the second end of the lever having a hole / slot, the steering automatic reset mechanism further including a fastener, the fastener passing through the second through hole of the rotating element and the hole / slot of the second end of the lever and connecting the rotating element and the lever, the lever, the rotating element, and the fastener being able to rotate about a central axis of the first through hole.

[0021] According to an embodiment of the present invention, the rotating element and the fastener are an integrally formed structure, the fastener being formed by the rotating element extending towards the base side.

[0022] According to an embodiment of the present invention, the rotating element is a base structure, a surface of the rotating element facing the base having a pressing portion and a receiving portion, the pressing portion being able to contact and separate from the first switch and the second switch, and the elastic element being partially constrained by the receiving portion.

[0023] According to an embodiment of the present invention, the first end of the lever extends beyond the base and forms a toggling plate towards the base direction, a plane where the toggling plate is located being perpendicular to the second surface of the base.

[0024] According to an embodiment of the present utility model, the first switch and the second switch are both microswitches with the same structure and are symmetrically distributed on the first surface of the base. The first switch includes a movable part and an external connection terminal part. When the movable part is squeezed by the rotating element, the first switch enters a conducting state, and the external connection terminal part of the first switch is electrically connected to an external motor. When the squeezing state of the movable part is released, the first switch enters an off state.

[0025] According to an embodiment of the present utility model, receiving cavities are symmetrically formed on the first surface of the base, and the elastic element is partially constrained by the receiving cavities.

[0026] According to an embodiment of the present utility model, the central part of the base has a first through hole for connecting the rotating element and the lever. The rotating element has a second through hole, and the second end of the lever has a hole / slot. The steering automatic reset mechanism further includes a fastener. The fastener passes through the second through hole of the rotating element and the hole / slot at the second end of the lever, and connects the rotating element and the lever. The lever, the rotating element, and the fastener can rotate around the central axis of the first through hole. The rotating element is a base structure. The surface of the rotating element facing the base has a squeezing part and a receiving part. The squeezing part can contact and separate from the first switch and the second switch. The elastic element is partially constrained by the receiving part. The elastic element is a spring.

[0027] According to an embodiment of the present utility model, the elastic element includes a first spring and a second spring. The first spring and the second spring are symmetrically arranged at the edge part of the base. The first end of the first spring is connected to the first edge of the base, and the second end of the first spring is connected to the first side of the rotating element. The first end of the second spring is connected to the second edge of the base, and the second end of the second spring is connected to the second side of the rotating element.

[0028] According to an embodiment of the present utility model, a snow sweeper includes

[0029] A frame;

[0030] A traveling unit, which is installed at the bottom end of the frame;

[0031] An armrest unit, which is fixedly installed at the first end of the frame;

[0032] Snow removal unit, the snow removal unit is installed at the second end of the frame. The snow removal unit further includes a snow discharge steering device. The snow discharge device includes a snow discharge steering execution part and the steering automatic reset mechanism as described above. The steering automatic reset mechanism is electrically connected to the snow discharge steering execution part to control the rotation direction of the snow discharge steering execution part. Description of the Drawings

[0033] Figure 1 It is a schematic diagram of an application position of the steering automatic reset mechanism according to the first preferred embodiment of the present invention.

[0034] Figure 2 It is a schematic diagram of the steering automatic reset mechanism according to the first preferred embodiment of the present invention.

[0035] Figure 3 It is a cross-sectional view of the steering automatic reset mechanism according to the first preferred embodiment of the present invention.

[0036] Figure 4 It is a schematic diagram of the rotating element according to the first preferred embodiment of the present invention.

[0037] Figure 5 It is an initial position diagram of the rotating element according to the first preferred embodiment of the present invention.

[0038] Figure 6 It is a schematic diagram of the rotating element squeezing and conducting the first switch according to the first preferred embodiment of the present invention.

[0039] Figure 7 It is a schematic diagram of the rotating element squeezing and conducting the second switch according to the first preferred embodiment of the present invention.

[0040] Figure 8 It is a schematic diagram of the lever element according to the first preferred embodiment of the present invention.

[0041] Figure 9 It is a cross-sectional view of the steering automatic reset mechanism according to the second preferred embodiment of the present invention.

[0042] Figure 10 It is a schematic diagram of a snow sweeper according to the first preferred embodiment of the present invention. Detailed Description of the Preferred Embodiment

[0043] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0044] Unless otherwise defined, technical terms or scientific terms used herein shall have the ordinary meanings understood by those of ordinary skill in the technical field to which this application pertains. In the description of this application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to this application.

[0045] The specific meanings of triggering and releasing mentioned in this patent are that after the first switch and the second switch are squeezed by the rotating element, the circuits inside the first switch and the second switch are in a conducting state, that is, the triggering state; after the first switch and the second switch are separated from the rotating element, the first switch and the second switch are in an off state, that is, the releasing state. Figure 1 and Figure 10 The rectangular boxes in represent the control box and the snow outlet steering device 501 respectively. The rectangular boxes only serve as a schematic illustration and are not the focus of protection of this utility model. As Figure 3 shown, from an external perspective, the left edge of the base is the first edge of the base, the right edge of the base is the second edge of the base, the left side of the rotating element is the first side of the rotating element, and the right side of the rotating element is the second side of the rotating element.

[0046] As Figure 1 shown, the steering automatic reset mechanism 1 is configured at one end of a control box, and the control box is configured at the control panel of a vehicle body.

[0047] As Figures 2 - 8 shown, a steering automatic reset mechanism 1 includes: a base 10 having a first surface 101, a second surface 102 and a central portion 103; a first switch 11 and a second switch 12 fixed in the first surface 101 of the base 10, and the first switch 11 and the second switch 12 each have a conducting state and a non-conducting state.

[0048] As Figure 4 shown, a rotating element 13 rotatably fixed in the first surface 101 of the base 10, and the first switch 11 and the second switch 12 can be triggered and released by the rotating element 13 respectively;

[0049] As Figure 8As shown, there is a lever 14. The lever 14 has a first end 141 that can be toggled and a second end 142 connected to the second surface 102 of the base 10. The rotating element 13 and the second end 142 of the lever 14 have the same axis of rotation, such that the rotating element 13 rotates together with the lever 14.

[0050] An elastic element 15. The elastic element 15 is fixed on the first surface 101 of the base 10 and has an initial position. The rotating element 13 is constrained by the elastic element 15. When an external force acts on the rotating element 13 to cause the rotating element 13 to rotate, the elastic element 15 stores elastic potential energy. When the external force is removed from the rotating element 13, the elastic element 15 releases the elastic potential energy, causing the rotating element 13 to return to the initial position.

[0051] The rotating element 13 in the steering automatic reset mechanism 1 squeezes the first switch 11 and the second switch 12 by rotating, thereby electrically conducting the snow discharge steering execution part 504 controlled by the first switch 11 and the second switch 12. When the external force acting on the rotating element 13 is removed, the rotating element 13 is acted upon by the restoring force of the elastic element 15 and returns to the initial state, thereby disconnecting the circuits of the first switch 11 or the second switch 12. The operator does not need to stop and shut down, but only needs to remove the force applied to the rotating element 13 to cut off the circuit. In this way, the operation difficulty of the operator is greatly saved. It is worth mentioning that the operator operates the lever 14, and the lever 14 drives the rotating element 13 to rotate through its second end 142. The lever 14 is a labor-saving lever structure, which is convenient for operation.

[0052] As Figures 5 - 7 shown, they are the three most common basic states for the operator to operate the steering automatic reset mechanism 1. Figure 5 It is a diagram of the initial position of the rotating element 13 according to the first preferred embodiment of the present invention. When the rotating element 13 is in the initial position, the rotating element 13 is in a separated state from the first switch 11 and the second switch 12. At this time, the circuits inside the first switch 11 and the second switch 12 are in an open state. It is worth mentioning that when the external force is removed from the rotating element 13, the elastic element 15 releases the elastic potential energy, causing the rotating element 13 to return to the initial position. That is to say, before the external force is applied and after the external force is removed, the rotating element 13 is in the same position.

[0053] Figure 6It is a schematic diagram of the rotation element 13 squeezing and conducting the first switch 11 according to the first preferred embodiment of the present utility model. When the lever 14 is toggled, the rotation element 13 is constrained by the elastic element 15. After an external force acts on the rotation element 13 to cause it to rotate, the elastic element 15 stores elastic potential energy, the movable part 110 of the first switch 11 is triggered and squeezed, the first switch 11 is in a conducting state, and the snow discharge steering execution part 504 electrically connected to the first switch 11 executes a steering action.

[0054] Figure 7 It is a schematic diagram of the rotation element 13 squeezing and conducting the second switch 12 according to the first preferred embodiment of the present utility model.

[0055] The operator toggles the lever 14 by hand. The rotation element 13 is constrained by the elastic element 15. After an external force acts on the rotation element 13 to cause it to rotate, the elastic element 15 stores elastic potential energy, the movable part 110 of the first switch 11 is triggered, the second switch 11 is in a conducting state, and the snow discharge steering execution part 504 electrically connected to the second switch 12 executes a steering action.

[0056] As Figure 2 and Figure 4 shown, the central part 103 of the base 10 has a first through hole 1031 for connecting the rotation element 13 and the lever 14. The rotation element 13 has a second through hole 1302. The second end 142 of the lever 14 has a hole / slot. The steering automatic reset mechanism 1 further includes a fastener 16. The fastener 16 passes through the second through hole 1302 of the rotation element 13 and the hole / slot of the second end 142 of the lever, and connects the rotation element 13 and the lever 14. The lever 14, the rotation element 13, and the fastener 16 can rotate around the central axis of the first through hole 1031.

[0057] The rotation element 13 is coaxially connected to the fastener 16. The fastener 16 is a screw. The rotation element 13 is provided with a threaded hole for the fastener 16 to pass through and then connect to the second end 142 of the lever. The rotation element 13 and the fastener 16 can also be an integrally formed structure, and the fastener 13 is formed by the rotation element 13 extending towards the base 10.

[0058] Figure 41 is a schematic diagram of a rotating element according to a first preferred embodiment of the utility model. The rotating element 13 is a base structure, and the rotating element 13 has a pressing portion 131 and a receiving portion 132 on a side facing the base 10, the pressing portion 131 can contact and separate with the first switch 11 and the second switch 12, and the elastic element 15 can be partially constrained by the receiving portion 132.

[0059] Figure 8 1 is a schematic diagram of the lever element 14 according to the first preferred embodiment of the utility model. The lever first end 141 exceeds the base 10 and forms a shift plate 143 toward the base 10 , and the plane where the shift plate 143 is located is perpendicular to the second surface 102 of the base 10 .

[0060] The first switch 11 and the second switch 12 are both micro switches with the same structure and are symmetrically distributed on the first surface 101 of the base 10. The first switch 11 includes a movable part 110 and an external terminal part 111. When the movable part 110 is squeezed by the rotating element 13, the first switch 11 enters an on state, and the external terminal part 111 of the first switch 11 is electrically connected to an external motor. When the movable part 110 is released from the squeezed state, the first switch 11 enters an off state.

[0061] Similarly, the second switch 12 is configured to have the same structure and working mode as the first switch 11 .

[0062] The first surface 101 of the base 10 symmetrically forms a receiving cavity 104, and the elastic element 15 is partially restrained by the receiving cavity 104. Furthermore, the receiving portion 132 of the rotating element 13 and the receiving cavity 104 of the base restrain the elastic element 15 together.

[0063] The central part 103 of the base 10 has a first through hole 1031 for connecting the rotating element 13 and the lever 14, the rotating element 13 has a second through hole 1302, and the second end 142 of the lever 14 has a hole / slot, and the automatic steering reset mechanism 1 further includes a fastener 16, the fastener 16 passes through the second through hole 1302 of the rotating element 13 and the hole / slot of the second end 142 of the lever, and connects the rotating element 13 and the lever 14, and the lever 14, the rotating element 13, and the fastener 16 can rotate around the central axis of the first through hole 1031. The rotating element 13 is a base structure, and the elastic element is a spring.

[0064] Figure 9 It is a cross-sectional view of the steering automatic reset mechanism 1 according to the second preferred embodiment of the utility model.

[0065] The elastic element 15A includes a first spring 151A and a second spring 152A. The first spring 151A and the second spring 152A are symmetrically arranged at the edge part of the base 10A. The first end of the first spring 151A is connected to the first edge of the base 10A, and the second end of the first spring 151A is connected to the first side of the rotating element 13A. The first end of the second spring 152A is connected to the second edge of the base 10, and the second end of the second spring 152A is connected to the second side of the rotating element 13.

[0066] Figure 10 It is a schematic diagram of a snow sweeper according to the first preferred embodiment of the present invention.

[0067] A snow sweeper, comprising: a frame 2; a traveling unit 3, the traveling unit 3 being installed at the bottom end of the frame 2;

[0068] An armrest unit 4, the armrest unit 4 being installed at the first end of the frame 2; a snow sweeping unit 5, the snow sweeping unit 5 being installed at the second end of the frame 2. The snow sweeping unit 5 further includes a snow discharging steering device 501. The snow discharging steering device 501 includes a snow discharging steering execution part 504 and the steering automatic reset mechanism 1 as described above. The steering automatic reset mechanism 1 is electrically connected to the snow discharging steering execution part 504, and further controls the rotation direction of the snow discharging steering execution part 504.

[0069] Although the present invention has been described in the specification and illustrated in the drawings based on reference to various embodiments, those skilled in the art can understand that the above embodiments are only preferred embodiments. Some technical features in the embodiments may not be necessary for solving specific technical problems, and thus these technical features can be absent or omitted without affecting the solution of the technical problems or the formation of the technical solutions. Moreover, the features, elements, and / or functions of one embodiment can be appropriately combined, combined, or coordinated with the features, elements, and / or functions of one or more other embodiments, unless the combination, combination, or coordination is clearly inapplicable.

Claims

1. A steering automatic reset mechanism, characterized in that: include: a base having a first surface, a second surface and a central portion; a first switch and a second switch, wherein the first switch and the second switch are fixed to the first surface of the base, and each of the first switch and the second switch has an on state and an off state; a rotating element rotatably fixed to the first surface of the base, and the first switch and the second switch can be triggered and released respectively by the rotating element; A lever, the lever having a first end that can be moved and a second end connected to the second surface of the base, the rotating element and the second end of the lever having the same rotation axis, so that the rotating element can rotate together with the lever; An elastic element is fixed to the first surface of the base and has an initial position. The rotating element is constrained by the elastic element. When an external force acts on the rotating element to cause the rotating element to rotate, the elastic element stores elastic potential energy. When the external force is removed from the rotating element, the elastic element releases the elastic potential energy, causing the rotating element to return to the initial position.

2. The automatic steering reset mechanism according to claim 1, characterized in that: The central portion of the base has a first through hole for connecting the rotating element and the lever, the rotating element has a second through hole, and the second end of the lever has a hole / groove. The automatic steering reset mechanism further includes a fastener, which passes through the second through hole of the rotating element and the hole / groove at the second end of the lever and connects the rotating element and the lever. The lever, the rotating element, and the fastener can rotate around the central axis of the first through hole.

3. The automatic steering reset mechanism according to claim 2, characterized in that: The rotating element and the fastener are an integrally formed structure, and the fastener is formed by extending the rotating element toward one side of the base.

4. The automatic steering reset mechanism according to claim 2, characterized in that: The rotating element is a base structure, and a side of the rotating element facing the base has a pressing portion and a receiving portion, the pressing portion can be in contact with and separated from the first switch and the second switch, and the elastic element can be partially constrained by the receiving portion.

5. The automatic steering reset mechanism according to claim 2, characterized in that: The first end of the shifting rod exceeds the base and forms a shifting plate toward the base, and the plane where the shifting plate is located is perpendicular to the second surface of the base.

6. The automatic steering reset mechanism according to claim 1, characterized in that: The first switch and the second switch are both micro switches with the same structure and are symmetrically distributed on the first surface of the base. The first switch includes a movable part and an external terminal part. When the movable part is squeezed by the rotating element, the first switch enters an on state, and the external terminal part of the first switch is electrically connected to an external motor. When the movable part is released from the squeezed state, the first switch enters an off state.

7. The automatic steering reset mechanism according to claim 1, characterized in that: The first surface of the base symmetrically forms a receiving cavity, and the elastic element is partially constrained by the receiving cavity.

8. The automatic steering reset mechanism according to claim 7, characterized in that: The central part of the base has a first through hole for connecting the rotating element and the lever, the rotating element has a second through hole, and the second end of the lever has a hole / groove. The steering automatic reset mechanism further includes a fastener, which passes through the second through hole of the rotating element and the hole / groove at the second end of the lever and connects the rotating element and the lever. The lever, the rotating element, and the fastener can rotate around the central axis of the first through hole. The rotating element is a base structure, and the side of the rotating element facing the base has an extrusion portion and a storage portion, and the extrusion portion can contact and separate with the first switch and the second switch, and the elastic element can be partially constrained by the storage portion. The elastic element is a spring.

9. The automatic steering reset mechanism according to claim 1, characterized in that: The elastic element includes a first spring and a second spring, the first spring and the second spring are symmetrically arranged on the edge portion of the base, the first end of the first spring is connected to the first edge of the base, the second end of the first spring is connected to the first side of the rotating element, the first end of the second spring is connected to the second edge of the base, and the second end of the second spring is connected to the second side of the rotating element.

10. A snow sweeper, characterized in that: include: frame; A travel unit, the travel unit being mounted at the bottom end of the frame; An armrest unit, the armrest unit being mounted on a first end of the frame; A snow-clearing unit, wherein the snow-clearing unit is mounted at the second end of the frame, and the snow-clearing unit further comprises a snow-discharging steering device, wherein the snow-discharging steering device comprises a snow-discharging steering actuator and a steering automatic reset mechanism as described in any one of claims 1 to 9, wherein the steering automatic reset mechanism is electrically connected to the snow-discharging steering actuator, thereby controlling the rotation direction of the snow-discharging steering actuator.

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