A lawnmower

Abstract

This utility model discloses a lawnmower, comprising: a housing, an opening-downward-facing blade mounting compartment within the housing, a blade assembly housed within the blade mounting compartment, and the blade assembly connected to the housing via a blade floating mechanism. The blade floating mechanism is flexibly connected to a height adjustment component and is affected by the torque of the height adjustment component. The blade floating mechanism includes a linkage mechanism, one end of which is hinged to the housing, and the other end of which is connected to the blade assembly. A rope is fixed to the linkage mechanism, and the other end of the rope is connected to the height adjustment component, which passes through the housing and is fixed to the surface of the housing. This utility model's lawnmower uses a rope to pull the height adjustment mechanism, enabling the lawnmower to float when operating on uneven ground, effectively preventing damage to the blade due to collisions.

Description

Technical Field

[0001] This utility model relates to a lawnmower and belongs to the field of garden tool technology. Background Technology

[0002] In traditional lawnmowers, the four-bar linkage height adjustment mechanism typically uses a screw and a nut screwed onto it to drive the height adjustment. However, this type of mechanism has several drawbacks. Firstly, there is unavoidable friction between the screw and the nut. To reduce this friction, softened grease needs to be applied to the meshing surfaces. However, over time, the grease gradually decreases, causing the friction to increase. This, combined with the adjustment damping, results in inconsistent tactile feedback from the knob, significantly impacting the user experience.

[0003] On the other hand, the screw adjustment mechanism itself has a relatively complex design, which directly leads to a cumbersome and time-consuming assembly process. Under the dual influence of complex structure and frequent friction, the service life of the adjustment mechanism is greatly limited, and once a failure occurs, it is extremely inconvenient to repair, requiring a lot of manpower, material resources and time to repair, causing a lot of trouble for users. Utility Model Content

[0004] The purpose of this utility model is to overcome the problems existing in the prior art and provide a lawnmower that adjusts the height of the blade disc by means of a rope, with a simple and reliable structure and convenient installation and maintenance.

[0005] To solve the above technical problems, the present invention provides a lawnmower comprising: a housing, wherein the housing has a downward-opening blade mounting compartment, the blade mounting compartment has a blade assembly, the blade assembly is connected to the housing via a blade floating mechanism, and the blade floating mechanism is flexibly connected to a height adjustment component and is affected by the torque of the height adjustment component.

[0006] Furthermore, the floating cutter head mechanism includes a linkage mechanism, one end of which is hinged to the housing, and the other end of which is connected to the cutter head assembly. A rope is fixed to the linkage mechanism, and the other end of which is connected to a height adjustment assembly that passes through the housing and is fixed to the surface of the housing.

[0007] Furthermore, the top of the housing is provided with a height adjustment component mounting groove. The height adjustment component includes a rotary gear, a knob, a damping element, and a coil. The coil is located at the lower part of the rotary gear and rotates together with the rotary gear. The peripheral wall of the gear is provided with a damping element, and the tooth tips of the gear abut against the protrusion of the damping element.

[0008] Furthermore, the damping element is a spring plate protruding from the center towards the tooth tip, with both ends of the spring plate inserted into the damping element mounting groove on the side wall of the mounting groove, and the damping element is located at the four corners of the mounting groove.

[0009] Furthermore, the damping element is located at the four corners of the mounting groove.

[0010] Furthermore, a wear-resistant guide sleeve is fitted into the through hole through which the wire passes on the housing, and the wire passes through the wear-resistant guide sleeve and is wound around the wire spool.

[0011] Furthermore, a knob mounting post is provided in the middle of the knob gear plate, the knob is located on the top of the knob mounting post, and a sealing cover is sealed on the top of the mounting groove.

[0012] Furthermore, the rope is a steel wire rope.

[0013] Furthermore, the knob gear has a through hole for the cord to pass through, and the cord is wound around the spool and then passes through the through hole to be fixedly connected to the knob gear.

[0014] Compared with the prior art, the present invention has achieved the following beneficial effects: 1. The use of a rope-driven height adjustment mechanism enables the lawnmower to float when operating on uneven ground, effectively preventing the blade from being damaged by colliding with the ground.

[0015] 2. The steel wire rope has high strength and wear resistance, and a simple structure, which reduces installation costs, simplifies the installation process, and significantly extends the product's service life.

[0016] 3. As a universal component, steel wire rope eliminates the need for separate molds to accommodate lawnmowers with different height adjustment depths, reducing production costs and complexity. Attached Figure Description

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The drawings are provided for reference and illustration only and are not intended to limit the present invention.

[0018] Figure 1 This is a front sectional view of the lawnmower of this utility model; Figure 2 This is an exploded view of the lawnmower of this utility model; Figure 3 This is a partial cross-sectional view of the lawnmower height adjustment component of this utility model; Figure 4 This is a perspective view of the connection between the centerline rope and the height adjustment component of this utility model.

[0019] In the diagram: 1. Housing, 2. Cutter head mounting compartment, 3. Cutter head assembly, 4. Cutter head floating mechanism, 4a. Linkage mechanism, 5. Height adjustment assembly, 5a. Knob gear, 5b. Knob, 5c. Damping component, 5d. Wire reel, 6. Wire rope, 7. Mounting groove, 8. Wear-resistant guide sleeve, 9. Sealing cover. Detailed Implementation

[0020] In the following description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not mean that the device must have a specific orientation.

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0023] like Figure 1 and Figure 2 As shown, the present invention aims to provide a lawnmower, including a housing 1, with a downward-opening blade mounting compartment 2 inside the housing 1, a blade assembly 3 inside the blade mounting compartment 2, and the blade assembly 3 connected to the housing 1 through a blade floating mechanism 4. The blade floating mechanism 4 is flexibly connected to a height adjustment component 5 and is affected by the torque of the height adjustment component 5.

[0024] The floating mechanism 4 of the cutter head includes a linkage mechanism 4a. One end of the linkage mechanism 4a is hinged to the housing 1, and the other end is hinged to the cutter head assembly 3. A rope 6 is fixed on the linkage mechanism 4a. The other end of the rope 6 passes through the housing 1 and is connected to the height adjustment component 5 fixed to the surface of the housing 1.

[0025] like Figures 2 to 4 As shown, the top of the housing 1 is provided with a height adjustment component mounting slot 7. The height adjustment component 5 includes a rotary gear 5a, a knob 5b, damping elements 5c, and a wire spool 5d. The wire spool 5d is located below the rotary gear 5a and rotates together with it. Four damping elements 5c are provided on the outer periphery of the rotary gear 5a, and the tips of the teeth of the rotary gear 5a abut against the protrusions of the damping elements 5c. When it is necessary to adjust the height of the cutter head, the knob 5b is rotated. The knob 5b drives the rotary gear 5a to rotate against the resistance of the damping elements 5c, causing the wire 6 to wind around or be released along the wire spool 5d. After the height is adjusted, the damping elements 5c prevent the wire spool 5d from continuing to rotate due to the tension of the wire 6.

[0026] The damping element 5c is a spring plate that protrudes from the center towards the tooth tip. Both ends of the spring plate are inserted into the damping element mounting groove on the side wall of the mounting groove 7. The damping element 5c is located at the four corners of the mounting groove 7.

[0027] A wear-resistant guide sleeve 8 is fitted into the through hole through which the cord 6 passes on the housing 1. After passing through the wear-resistant guide sleeve 8, the cord 6 is coiled around the reel 5d. A knob mounting post is provided in the middle of the knob gear plate 5a, and the knob 5b is located on the top of the knob mounting post. A sealing cover 9 is sealed on the top of the mounting groove 7. The cord 6 is a steel wire rope. The knob gear plate 5a has a through hole for the cord 6 to pass through. After being coiled around the reel 5d, the cord 6 passes through the through hole and is fixedly connected to the knob gear plate 5a.

[0028] The use of a wire rope-driven height adjustment mechanism allows the lawnmower to float on uneven ground, effectively preventing damage to the blades from impacts. The wire rope boasts high strength and wear resistance, with a simple structure that reduces installation costs, simplifies the installation process, and significantly extends product lifespan. As a universal component, the wire rope eliminates the need for separate molds to accommodate lawnmowers with different height adjustments, reducing production costs and complexity.

[0029] The above description is merely a preferred embodiment of the present utility model, showing and describing the basic principles, main features, and advantages of the present utility model. It is not intended to 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 to the above embodiments. In addition to the above embodiments, the present utility model may have other implementations without departing from the spirit and scope of the present utility model. Various changes and improvements to the present utility model are also possible. All technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by the present utility model. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents. Technical features not described in the present utility model can be implemented by or using existing technology, and will not be elaborated here.

Claims

1. A lawnmower, comprising: A housing, wherein a downward-opening cutter head mounting compartment is provided inside the housing, and a cutter head assembly is provided inside the cutter head mounting compartment, characterized in that: the cutter head assembly is connected to the housing through a cutter head floating mechanism, and a height adjustment component is installed on the top of the housing, wherein the cutter head floating mechanism is flexibly connected to the height adjustment component and is controlled by the torque of the height adjustment component.

2. The lawnmower as claimed in claim 1, characterized in that: The floating cutter head mechanism includes a linkage mechanism, one end of which is hinged to the housing, and the other end of which is hinged to the cutter head assembly. A rope is fixed to the linkage mechanism, and the upper end of the rope passes through the housing and is connected to the height adjustment assembly.

3. The lawnmower as claimed in claim 1, characterized in that: The top of the housing is provided with a height adjustment component mounting groove. The height adjustment component includes a rotary gear, a knob, a damping element, and a coil. The coil is located on the lower end face of the rotary gear and rotates together with the rotary gear. The outer periphery of the gear is provided with a damping element, and the tooth tips of the gear abut against the protrusion of the damping element.

4. The lawnmower as claimed in claim 3, characterized in that: The damping element is a spring plate that protrudes from the center toward the tip of the knob gear, and both ends of the spring plate are inserted into the damping element mounting groove on the side wall of the mounting groove.

5. The lawnmower as claimed in claim 3, characterized in that: The damping element is provided in four parts, and is respectively located at the four corners of the mounting groove.

6. The lawnmower as claimed in claim 2, characterized in that: A wear-resistant guide sleeve is fitted into the through hole through which the rope passes on the housing, and the rope passes through the wear-resistant guide sleeve.

7. The lawnmower as claimed in claim 3, characterized in that: The knob gear has a knob mounting post at its center, the knob is mounted on the top of the knob mounting post, and the upper port of the mounting groove is covered with a sealing cap.

8. The lawnmower as claimed in claim 2, characterized in that: The rope is a steel wire rope.

9. The lawnmower as claimed in claim 3, characterized in that: The knob gear has a through hole for the cord to pass through. The cord is coiled around the gear, passes through the through hole, and is fixed above the knob gear.

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