Self-moving equipment with cutter head height adjusting knob

Abstract

A self-moving device with a cutter head heightening rotary knob comprises a machine shell, a through hole for the heightening rotary knob to be pressed down is formed in an upper cover of the machine shell, the heightening rotary knob is inserted into the through hole and limited by the through hole, the lower end face of the heightening rotary knob abuts against a telescopic assembly, and a heightening assembly is arranged at the lower end of the telescopic assembly. The telescopic assembly comprises a telescopic limiting rotating shaft and a telescopic sliding shaft, a circle of upper ratchets are arranged at the position, close to the middle, of the telescopic limiting rotating shaft, lower ratchets meshed with the upper ratchets are arranged at the top of the telescopic sliding shaft, the upper end of the telescopic limiting rotating shaft is sleeved with a reset spring, and the lower end of the telescopic limiting rotating shaft is inserted into a socket hole in the middle of the telescopic sliding shaft. A lower ratchet of the telescopic sliding shaft is limited in the telescopic guide groove shell, and the lower end of the telescopic sliding shaft is connected with the height adjusting assembly. According to the hay mower, the problem that a manual height adjusting knob is abrupt in the shape design of the hay mower is solved, meanwhile, the height size can be optimized in the shape design stage, and meanwhile, the packaging height size is reduced.

Description

Technical Field

[0001] The utility model relates to a self-moving device with a cutter disc height adjustment knob, belonging to the technical field of electric tools. Background Art

[0002] Lawn mowers are widely used power tools for trimming lawns to maintain a neat and aesthetically pleasing appearance. During mowing, users often need to adjust the cutting height based on lawn conditions and personal preference. Cutting height is defined as the distance between the blades and the ground. Traditionally, lawn mowers have adjusted the cutting height by adjusting the position of the wheel axle relative to the base. While this method achieves height adjustment, it has limitations due to its complex structure and inconvenient assembly.

[0003] To simplify operation and improve user experience, modern lawn mowers often use height adjustment buttons or knobs instead of traditional axle adjustment methods. However, existing height adjustment knobs on the market have some shortcomings. First, after using these height adjustment devices to adjust the height, they usually protrude from the lawn mower body, which not only affects the overall aesthetics of the equipment but also increases the space required for packaging and transportation. Second, the exposed height adjustment knob can cause the mowing height to change due to accidental contact during operation, which in turn affects the consistency and quality of the lawn mowing effect. Utility Model Content

[0004] The purpose of the present utility model is to overcome the problems existing in the prior art and provide a self-moving device with a cutter disc height adjustment knob, comprising a casing, an upper cover of the casing being provided with a through hole for pressing the height adjustment knob, the height adjustment knob being inserted into the through hole and limited by the through hole, the lower end face of the height adjustment knob being against the telescopic component, and the lower end of the telescopic component being provided with a height adjustment component.

[0005] Furthermore, the telescopic assembly includes a telescopic limit rotating shaft and a telescopic sliding shaft. The telescopic limit rotating shaft is provided with a circle of upper ratchet teeth near the middle part, and the top of the telescopic sliding shaft is provided with a lower ratchet teeth engaged with the upper ratchet teeth. The upper end of the telescopic limit rotating shaft is sleeved with a reset spring, and the lower end of the telescopic limit rotating shaft is inserted into the socket in the middle part of the telescopic sliding shaft. The lower ratchet teeth of the telescopic sliding shaft are limited in the telescopic guide groove housing, and the lower end of the telescopic sliding shaft is connected to the height adjustment assembly.

[0006] Furthermore, the height adjustment component includes a height adjustment turntable and a cutter disc lifting platform. The top of the height adjustment turntable is provided with a fixed slot for connecting with the telescopic sliding shaft, and the bottom of the telescopic sliding shaft is provided with a sliding shaft slot. The sliding shaft slot is inserted into the fixed slot, and the lower end of the height adjustment turntable is sleeved with the cutter disc lifting platform.

[0007] Furthermore, the height adjustment knob is provided with a screw fixing column extending downward, and the outer periphery of the telescopic guide slot housing is provided with a screw fixing hole, and the screw passes through the screw fixing column and is screwed into the screw fixing hole.

[0008] Furthermore, the bottom of the upper ratchet of the telescopic limiting rotating shaft is in the shape of a downwardly inclined slope.

[0009] Furthermore, the side wall of the telescopic guide groove housing is provided with a plurality of guide ribs, and the adjacent tooth roots of the lower ratchet teeth are provided with longitudinal tooth grooves, and the guide ribs can be slidably inserted into the tooth grooves.

[0010] Compared to existing technologies, the present invention achieves the following beneficial effects: 1. When the mower is in storage or in operation, the height adjustment knob is in the down position. When the height needs to be adjusted, simply press the top of the knob, and it will pop out immediately. The user can now adjust the height of the mower's cutting deck using the knob. When the height adjustment is complete, press the knob again to return to the down position.

[0011] 2. The problem of the manual height adjustment knob being awkward in the lawn mower's exterior design is solved. At the same time, the height dimension can be optimized during the design phase, while reducing the height dimension of the packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The accompanying drawings are only provided for reference and illustration and are not intended to limit the present invention.

[0013] Figure 1 It is a cross-sectional view of the utility model;

[0014] Figure 2 This is a partial cross-sectional view of the height adjustment knob when it is pressed;

[0015] Figure 3 It is a partial cross-sectional view of the height adjustment knob in the reset state;

[0016] Figure 4 This is the exploded view of the height adjustment knob;

[0017] Figure 5 A top view of the turntable being raised.

[0018] In the figure: 1. Casing, 2. Height adjustment knob, 2a. Screw fixing column, 3. Through hole, 4. Telescopic limit shaft, 4a. Upper ratchet, 5. Telescopic sliding shaft, 5a. Lower ratchet, 6. Return spring, 7. Telescopic guide groove housing, 7a. Guide rib, 8. Height adjustment turntable, 8a. Fixing slot, 9. Cutter disc lifting platform. DETAILED DESCRIPTION

[0019] In the following description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not mean that the device must have a specific direction.

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0022] like Figure 1 As shown, the utility model aims to provide a self-moving device with a knife disc height adjustment knob, including a casing 1, the upper cover of the casing 1 is provided with a through hole 3 for pressing the height adjustment knob 2, the height adjustment knob 2 is inserted into the through hole 3 and limited by the through hole 3, the lower end surface of the height adjustment knob 2 is against the telescopic component, and the lower end of the telescopic component is provided with a height adjustment component.

[0023] like Figure 4 As shown, the telescopic assembly includes a telescopic limit shaft 4 and a telescopic sliding shaft 5. A circle of upper ratchet teeth 4a is provided near the middle of the telescopic limit shaft 4, and a lower ratchet tooth 5a engaged with the upper ratchet tooth 4a is provided on the top of the telescopic sliding shaft 5. The upper end of the telescopic limit shaft 5 is sleeved with a reset spring 6, and the lower end of the telescopic limit shaft 4 is inserted into the socket in the middle of the telescopic sliding shaft 5. The lower ratchet tooth 5a of the telescopic sliding shaft 5 is limited in the telescopic guide groove housing 7, and the lower end of the telescopic sliding shaft 5 is connected to the height adjustment assembly.

[0024] like Figure 5 As shown, the height adjustment component includes a height adjustment turntable 8 and a cutter disc lifting platform 9. The top of the height adjustment turntable 8 is provided with a fixed slot 8a for connecting with the telescopic sliding shaft 5, and the bottom of the telescopic sliding shaft 5 is provided with a sliding shaft slot, which is inserted into the fixed slot 8a, and the lower end of the height adjustment turntable 8 is sleeved with the cutter disc lifting platform 9.

[0025] The height adjustment knob 2 is equipped with a downward-extending screw-fixing post 2a. The telescoping guide housing 7 is provided with screw-fixing holes on its periphery, through which screws pass. The upper ratchet teeth 4a of the telescoping limit shaft 4 have a downwardly sloping bottom. The sidewalls of the telescoping guide housing 7 are provided with several guide ribs 7a. The adjacent roots of the lower ratchet teeth 4a are provided with longitudinal grooves, into which the guide ribs 7a slidably fit.

[0026] like Figure 2 As shown, the telescopic limit shaft 4 and the telescopic sliding shaft 5 are affected by the spring force and slide along the guide rib of the telescopic guide groove housing 7 to the bottom of the telescopic guide groove housing 7. At this time, the knob is in a raised state. When the height adjustment knob 2 is pressed, the height adjustment knob 2 and the telescopic guide groove housing 7 move downward at the same time. When the telescopic limit shaft 4 is separated from the guide rib of the telescopic guide groove housing 7, the upper ratchet 4a and the lower ratchet 5a rotate relative to each other, with a rotation angle of approximately 45°. At this time, the top of the guide rib 7a is stuck at the root of the upper ratchet 4a, and the return spring 6 is compressed as shown in FIG. Figure 2 The status shown.

[0027] Press the height adjustment knob 2 again, and the upper ratchet 4a of the telescopic limit shaft 4 is forced to rotate 45° again under the action of the spring force, and the upper ratchet 4a and the lower ratchet 5a are disengaged. The elastic force of the spring itself drives the telescopic guide groove housing 7 to move upward, and the guide rib slides in the tooth groove. At this time, the height adjustment knob 2 bulges.

[0028] like Figure 3 As shown, after pressing the height adjustment knob 2, the telescopic guide housing 7 is fixed to the height adjustment knob 2 by screws. At this time, the return spring 6 is in a compressed state, and the height adjustment dial 8 can only rotate. This reciprocating motion is achieved to adjust the mower's cutting height. When the mowing height is required, lightly press the upper end of the height adjustment knob 2 to raise it. When storing or working, keep it in the lowered state.

[0029] The above utility model is only a preferred embodiment of the present utility model, which shows and describes the basic principles and main features of the present utility model and the advantages of the present utility model, but does not limit the scope of patent protection of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. In addition to the above embodiments, the present utility model can also have other implementation methods without departing from the spirit and scope of the present utility model. The present utility model will also have various changes and improvements. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present utility model. The scope of protection required by the present utility model is defined by the attached claims and their equivalents. The technical features not described in the present utility model can be achieved by or using existing technologies, and will not be repeated here.

Claims

1. A self-propelled device having a cutter head height adjustment knob, comprising a housing, characterized in that: The upper cover of the casing is provided with a through hole for pressing the height adjustment knob, the height adjustment knob is inserted into the through hole and limited by the through hole, the lower end surface of the height adjustment knob is against the telescopic component, and the lower end of the telescopic component is provided with a height adjustment component.

2. The self-propelled device with a cutter head height adjustment knob according to claim 1, characterized in that: The telescopic assembly includes a telescopic limit rotating shaft and a telescopic sliding shaft. A circle of upper ratchet is provided near the middle of the telescopic limit rotating shaft. A lower ratchet engaged with the upper ratchet is provided on the top of the telescopic sliding shaft. A return spring is sleeved on the upper end of the telescopic limit rotating shaft. The lower end of the telescopic limit rotating shaft is inserted into the socket in the middle of the telescopic sliding shaft. The lower ratchet of the telescopic sliding shaft is limited in the telescopic guide groove housing. The lower end of the telescopic sliding shaft is connected to the height adjustment assembly.

3. The self-propelled device with a cutter height adjustment knob according to claim 1, characterized in that: The height adjustment component includes a height adjustment turntable and a cutter disc lifting platform. The top of the height adjustment turntable is provided with a fixed slot for connecting with the telescopic sliding shaft. The bottom of the telescopic sliding shaft is provided with a sliding shaft slot. The sliding shaft slot is inserted into the fixed slot. The lower end of the height adjustment turntable is sleeved with the cutter disc lifting platform.

4. The self-propelled device with a cutter head height adjustment knob according to claim 2, characterized in that: The height adjustment knob is provided with a screw fixing column extending downward, and the outer periphery of the telescopic guide slot housing is provided with a screw fixing hole, and the screw passes through the screw fixing column and is screwed into the screw fixing hole.

5. The self-propelled device with a cutter head height adjustment knob according to claim 2, characterized in that: The bottom of the upper ratchet of the telescopic limiting rotating shaft is in a downwardly inclined slope shape.

6. The self-propelled device with a cutter head height adjustment knob according to claim 4, characterized in that: The side wall of the telescopic guide groove housing is provided with a plurality of guide ribs, and the adjacent tooth roots of the lower ratchet teeth are provided with longitudinal tooth grooves, and the guide ribs can be slidably inserted into the tooth grooves.

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