Adjustable steering mechanism and lawn mower

Abstract

The present application discloses an adjustable steering mechanism and a lawn mower, comprising: a fixed frame, a tooth plate, an adjustment plate and a steering rod; a steering tooth meshed with the tooth plate is fixed at the lower end of the steering rod; the fixed frame comprises two symmetrically arranged side walls and a supporting wall placed between the two side walls; the middle part of the tooth plate is mounted on the adjustment plate and can move on the adjustment plate along the Y-axis direction; both ends of the tooth plate are mounted on the side walls of the fixed frame and can move on the fixed frame along the X-axis and Y-axis directions; both ends of the tooth plate are provided with pull rods linked to wheels; the adjustment plate is mounted on the supporting wall and keeps a distance therefrom, and the steering tooth is brought close to or away from the tooth plate by adjusting the distance between the adjustment plate and the supporting wall in the X-axis direction.

Description

Technical Field

[0001] The present application relates to the technical field of lawn mowers, and in particular to an adjustable steering mechanism and a lawn mower. Background Art

[0002] In the field of lawn mower design and manufacturing, the steering mechanism is a crucial component of the control system, which directly affects the control performance of the lawn mower and the user's operating experience.

[0003] Although the steering mechanisms currently on the market can basically meet the basic needs of drivers, there are still some shortcomings in some aspects. The traditional steering mechanism design usually includes components such as steering wheels, steering rods, steering gears and steering racks, which realize steering operations through a series of mechanical connections. The specific problems at present are: during the manufacturing process, the machining accuracy of the steering rack and steering gear, as well as the machining accuracy of the sheet metal parts that match them, are high, otherwise the rack and steering gear will not mesh well, the steering wheel will shake, and the customer experience will be affected; after the whole machine is installed, it is inconvenient to adjust the tightness of the steering wheel, and time is wasted on rework and debugging, resulting in waste. In other words, the matching clearance between the steering rack and the steering gear cannot be well adjusted. Summary of the invention

[0004] Based on this, the present application provides an adjustable steering mechanism and a lawn mower to solve one of the above technical problems.

[0005] The technical solution adopted by the present application to solve its technical problems is: in the first aspect, the present application provides an adjustable steering mechanism, including: a fixed frame, a tooth plate, an adjustment plate and a steering rod; the lower end of the steering rod is fixed with a steering tooth engaged with the tooth plate; the fixed frame includes two symmetrically arranged side walls and a support wall placed between the two side walls; the middle part of the tooth plate is installed on the adjustment plate and can move on the adjustment plate along the Y-axis direction; the two ends of the tooth plate are installed on the side walls of the fixed frame and can move on the fixed frame along the X-axis and Y-axis directions; the two ends of the tooth plate are provided with pull rods linked to the wheels; the adjustment plate is installed on the support wall and maintains a spacing therefrom, and the steering tooth is brought close to or away from the tooth plate by adjusting the spacing between the adjustment plate and the support wall in the X-axis direction.

[0006] In some embodiments, an L-shaped slide groove is provided on the side wall of the fixing frame, the cross section of the tooth plate is L-shaped corresponding to the slide groove, and the tooth plate moves in the slide groove along the X-axis and Y-axis directions.

[0007] In some embodiments, a through L-shaped limiting groove is provided on the adjustment plate, and the tooth plate is inserted into the L-shaped limiting groove.

[0008] In some embodiments, a positioning column and a connecting column are provided on one side of the adjustment plate, the positioning column is inserted into the positioning hole of the support wall, and the connecting column is fixedly connected to the support wall by screws.

[0009] In some embodiments, the distance is formed between the side of the adjustment plate and the support wall, and the distance can be adjusted by installing spacers of different thicknesses.

[0010] In some embodiments, a pair of symmetrically distributed limiting plates are provided on the other side of the adjustment plate, and the limiting plates partially wrap the teeth on the tooth plate.

[0011] In some embodiments, an external hexagonal bushing is installed at the lower end of the steering rod to connect with the fixing frame, and the steering gear is installed above the external hexagonal bushing and is fixed to the steering rod through a pin shaft.

[0012] In a second aspect, the utility model provides a lawn mower, characterized in that it includes the steering mechanism described in any one of the first aspects, and also includes a frame, the steering mechanism is installed at the front end of the frame, and a steering wheel is installed at the upper end of the steering rod of the steering mechanism.

[0013] In some embodiments, wheels are installed on both sides of the front end of the frame, and the wheels are connected to a rotating plate. The rotating plate is rotatably installed on the frame and connected to the pull rod.

[0014] The beneficial effects of this application are:

[0015] 1. During the manufacturing and debugging process, the spacing between the adjustment plate and the support wall in the X-axis direction can be adjusted. This is usually achieved by adding a gasket of appropriate thickness between the two to control the degree of engagement between the tooth plate and the teeth and solve the problem of steering wheel shaking.

[0016] 2. The precision requirements of parts can be reduced to reduce processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a three-dimensional schematic diagram of this application.

[0019] Figure 2 It is a partial structural diagram of this application.

[0020] Figure 3 It is a schematic diagram of the tooth plate connection structure of the present application.

[0021] Figure 4 It is a schematic diagram of the connection structure of the tooth plate and the adjustment plate of the present application.

[0022] Figure 5 It is a schematic diagram of the steering rod connection structure of the present application.

[0023] Figure 6 It is a schematic diagram of the rotating piece connection structure of the present application.

[0024] Explanation of the accompanying figures: 1. frame, 2. steering rod, 3. gear plate, 4. pull rod, 5. adjustment plate, 501. positioning column, 502. connecting column, 503. limit plate, 6. fixing frame, 601. side wall, 602. supporting wall, 7. steering wheel, 8. steering gear, 9. rotating plate, 10. wheel, 11. slide groove, 12. L-shaped limit groove, 13. external hexagonal bushing. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to achieve. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that the combination of such technical solutions does not exist and is not within the scope of protection of this application.

[0026] In the embodiments of this application, please refer to Figure 1-6 As shown, according to the first aspect of the present application, an adjustable steering mechanism is provided, which mainly includes: a fixed frame 6, a tooth plate 3, an adjustment plate 5 and a steering rod 2; a steering tooth 8 meshing with the tooth plate 3 is fixed at the lower end of the steering rod 2; the fixed frame 6 includes two symmetrically arranged side walls 601 and a support wall 602 placed between the two side walls 601; the middle part of the tooth plate 3 is mounted on the adjustment plate 5 and can move on the adjustment plate 5 along the Y-axis direction; the two ends of the tooth plate 3 are mounted on the side walls 601 of the fixed frame 6 and can move on the fixed frame 6 along the X-axis and Y-axis directions; the two ends of the tooth plate 3 are provided with pull rods 4 linked to the wheel 10; the adjustment plate 5 is mounted on the support wall 602 and maintains a spacing therefrom, and the steering tooth 8 is brought close to or away from the tooth plate 3 by adjusting the spacing between the adjustment plate 5 and the support wall 602 in the X-axis direction.

[0027] Some preferred / improved embodiments based on the above embodiments will be described below. Any one of the following embodiments may be selected, or multiple embodiments may be selected and combined.

[0028] Combination Figure 2 and Figure 5 As shown, an L-shaped slide groove 11 is opened on the side wall 601 of the fixing frame 6, and the cross-section of the tooth plate 3 is an L-shape corresponding to the slide groove 11. The tooth plate 3 moves in the slide groove 11 along the X-axis and Y-axis directions. The steering rod 2 is rotated to drive the steering gear 8 to rotate, so that the tooth plate 3 moves along the Y-axis direction. By adjusting the distance between the adjustment plate 5 and the support wall 602, the tooth plate 3 moves along the X-axis direction.

[0029] like Figure 4 As shown, the adjustment plate 5 is provided with a through L-shaped limit groove 12, and the tooth plate 3 is inserted in the L-shaped limit groove 12. The adjustment plate 5 can wrap most of the tooth plate 3, so that when adjusting the distance between the adjustment plate 5 and the steering tooth 8, the adjustment plate 5 can drive the tooth plate 3 to move more comprehensively.

[0030] like Figure 3 As shown, a positioning column 501 and a connecting column 502 are provided on one side of the adjustment plate 5. The positioning column 501 is inserted into the positioning hole of the support wall 602. The positioning column 501 is inserted into the positioning hole to limit the position and movement direction of the adjustment plate 5. The connecting column 502 is fixedly connected with the support wall 602 by screws. The connecting column 502 is used to cooperate with other components to fix the adjustment plate 5 on the fixing frame 6.

[0031] Specifically, the spacing is formed between this side of the adjustment plate 5 and the support wall 602 , and the spacing is adjusted by installing gaskets of different thicknesses, thereby controlling the degree of engagement between the tooth plate 3 and the teeth.

[0032] Furthermore, a pair of symmetrically distributed limit plates 503 are provided on the other side of the adjustment plate 5, and the limit plates 503 partially wrap the teeth on the gear plate 3, thereby tightly combining the gear plate 3 and the adjustment plate 5 together, so that the adjustment plate 5 can adjust the gear plate 3 to be close to or away from the steering gear 8.

[0033] like Figure 5 As shown, an external hexagonal bushing 13 is installed at the lower end of the steering rod 2 to connect with the fixed frame 6, and the steering gear 8 is installed above the external hexagonal bushing 13 and is fixed to the steering rod 2 through a pin shaft. The steering gear 8 can rotate under the drive of the steering rod 2, and the steering rod 2 itself can be fixed on the fixed frame 6.

[0034] like Figure 1As shown, according to the second aspect of the present application, a lawn mower is also provided, which includes the above-mentioned adjustable steering mechanism and a frame 1, wherein the steering mechanism is installed at the front end of the frame 1, and a steering wheel 7 is installed at the upper end of the steering rod 2 of the steering mechanism for driving the steering rod 2.

[0035] like Figure 6 As shown, wheels 10 are installed on both sides of the front end of the frame 1, and the wheels 10 are connected to a rotating plate 9. The rotating plate 9 is rotatably installed on the frame 1 and connected to the pull rod 4. The pull rod 4 is driven by the translation of the toothed plate 3. The pull rod 4 drives the rotating plate 9 set on the frame 1 to rotate, thereby deflecting the wheel 10 connected to the rotating plate 9 to achieve steering.

[0036] During use, turning the steering wheel 7 drives the steering rod 2 to rotate, the steering rod 2 drives the steering gear 8 fixed thereon to rotate, the steering gear 8 drives the gear plate 3 engaged with it to translate, the gear plate 3 translates and pushes the pull rod 4, so that the pull rod 4 drags the rotating piece 9 on the frame 1 to rotate, and finally the wheel 10 on the rotating piece 9 rotates, thereby realizing the steering of the lawn mower.

[0037] Among them, the meshing degree of the gear plate and the steering gear can be adjusted by the adjustment plate wrapped around the gear plate. The adjustment plate is fixed to the fixed frame by the connecting columns, screws and other components thereon. The meshing degree of the gear plate and the steering gear can be adjusted by adding a gasket of appropriate thickness between the adjustment plate and the supporting wall to solve the problem of steering wheel shaking. At the same time, the precision requirements of parts are not so high, which reduces the processing cost.

[0038] So far, various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed herein.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present application, and the aforementioned embodiments are only used to illustrate the technical solution of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not drive the essence of the corresponding technical solutions away from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An adjustable steering mechanism, characterized in that: include: Fixed frame, tooth plate, adjustment plate and steering rod; A steering tooth meshing with the tooth plate is fixed at the lower end of the steering rod; The fixing frame includes two symmetrically arranged side walls and a supporting wall disposed between the two side walls; The middle part of the tooth plate is mounted on the adjustment plate and can move along the Y-axis direction on the adjustment plate; The two ends of the tooth plate are mounted on the side walls of the fixing frame and can move along the X-axis and Y-axis directions on the fixing frame; Both ends of the toothed plate are provided with pull rods linked with the wheels; The adjustment plate is installed on the support wall and keeps a distance therefrom. The steering gear is moved close to or away from the gear plate by adjusting the distance between the adjustment plate and the support wall in the X-axis direction.

2. An adjustable steering mechanism according to claim 1, characterized in that: An L-shaped slide groove is provided on the side wall of the fixing frame, and the cross section of the tooth plate is L-shaped corresponding to the slide groove. The tooth plate moves in the slide groove along the X-axis and the Y-axis directions.

3. The adjustable steering mechanism according to claim 1, characterized in that: The adjustment plate is provided with a through L-shaped limiting groove, and the tooth plate is inserted in the L-shaped limiting groove.

4. The adjustable steering mechanism according to claim 1, characterized in that: A positioning column and a connecting column are provided on one side of the adjustment plate. The positioning column is inserted into the positioning hole of the support wall, and the connecting column is fixedly connected to the support wall by screws.

5. An adjustable steering mechanism according to claim 4, characterized in that: The distance is formed between this side of the adjustment plate and the support wall, and the distance can be adjusted by installing gaskets of different thicknesses.

6. An adjustable steering mechanism according to claim 4, characterized in that: A pair of symmetrically distributed limiting plates are arranged on the other side of the adjusting plate, and the limiting plates partially wrap the teeth on the tooth plate.

7. The adjustable steering mechanism according to claim 1, characterized in that: The lower end of the steering rod is provided with an external hexagonal sleeve to be connected with the fixing frame, and the steering gear is installed above the external hexagonal sleeve and is fixed with the steering rod through a pin shaft.

8. A lawn mower, characterized in that: The adjustable steering mechanism comprises any one of claims 1 to 7, and also comprises a frame, wherein the steering mechanism is mounted at the front end of the frame, and a steering wheel is mounted at the upper end of a steering rod of the steering mechanism.

9. A lawn mower according to claim 8, characterized in that: Wheels are installed on both sides of the front end of the frame, and the wheels are connected to a rotating plate. The rotating plate is rotatably installed on the frame and connected to the pull rod.

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