A lawn trimmer

Abstract

This utility model relates to the field of lawn mowing technology, specifically a lawn mower, including a housing. A front wheel is mounted at the bottom front end of the housing, a rear wheel is mounted at the bottom rear end of the housing, an engine is mounted at the top of the housing, a push rod is hinged to the top rear end of the housing, a grass collection bag is connected to the rear end of the housing, and blades are mounted at the bottom of the housing. A protective assembly is also included, located at the bottom of the housing and comprising a chassis welded to the bottom of the housing and enclosing the blades. This utility model features a reinforcing ring fixedly mounted on the bottom periphery of the chassis. Both the chassis and the reinforcing ring are made of aluminum alloy, with the outer diameter of the reinforcing ring being larger than that of the chassis. This design is more aesthetically pleasing to modern eyes, while the thicker chassis makes it more robust and durable than traditional steel chassis.

Description

Technical Field

[0001] This utility model relates to the field of lawn mowing technology, specifically a lawn mowing machine. Background Technology

[0002] With the improvement of people's living standards and the popularization of landscaping, lawns are playing an increasingly important role in the landscape of cities, parks, residential areas and other places. Lawn mowing is a key step in maintaining its neatness and beauty. Traditional manual mowing methods are time-consuming and laborious, and it is difficult to ensure the consistency and efficiency of mowing. Therefore, lawn mowing machines are used.

[0003] The development of lawn mowers has a history spanning over a century, from the initial manual push-type to today's internal combustion engine driven, electric, hydraulic, air-cushioned, electronically controlled, computer-controlled, and even fully automatic, low-noise, highly intelligent lawn mowers powered by solar energy. Due to economic development and the needs of landscaping, the production and technological upgrading of lawn mowers are receiving increasing attention from various countries.

[0004] However, the applicant believes that the shortcomings are: 1. Traditional lawn mowers have steel chassis, which have low strength and short service life, and are prone to damage when working on lawns for a long time; 2. Common manual lawn mowers are inefficient, and existing automatic mowers generally use belt drives, which have a high failure rate of self-propelled systems.

[0005] Therefore, we propose a lawn mower to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a lawn mower to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a lawn mower, including a casing,

[0008] A front wheel is mounted at the bottom front end of the outer casing, a rear wheel is mounted at the bottom rear end of the outer casing, an engine is mounted at the top of the outer casing, a push rod is hinged to the top rear end of the outer casing, a grass collection bag is connected to the rear end of the outer casing, and a blade is mounted at the bottom of the outer casing; a protective assembly is located at the bottom of the outer casing, the protective assembly includes a chassis, the chassis is welded to the bottom of the outer casing and wraps around the blade, and a reinforcing ring is fixedly mounted at the bottom of the chassis; a transmission mechanism is located between the rear wheel and the engine.

[0009] Preferably, both the front and rear wheels are made of rubber and have anti-slip patterns on their surfaces, which greatly increases the friction with the ground and ensures stable movement of the device.

[0010] Preferably, the chassis and reinforcing ring are made of aluminum alloy. Aluminum alloy is an alloy based on aluminum with the addition of a certain amount of other alloying elements, and is one of the lightweight metal materials. In addition to the general properties of aluminum, aluminum alloy also has some specific alloy properties due to the different types and amounts of alloying elements added. The density of aluminum alloy is 2.63~2.85g / cm3, it has high strength, its specific strength is close to that of high alloy steel, and its specific stiffness exceeds that of steel.

[0011] Preferably, the outer diameter of the reinforcing ring is larger than the outer diameter of the chassis, which helps to improve the strength of the chassis and further enhance the safety of the device.

[0012] Preferably, the transmission mechanism includes a first gear, which is fixedly installed in the middle of the rear wheel. The housing has an internal mounting groove. The internal output end of the engine is directly connected to a first universal joint, and the other end of the first universal joint is fixedly connected to a drive shaft. A telescopic sleeve is provided on the outside of one end of the drive shaft. The other end of the telescopic sleeve is fixedly connected to a second universal joint, and the other end of the second universal joint is fixedly installed with a second gear. The second gear meshes with the first gear. The drive shaft and the telescopic sleeve are both located inside the mounting groove.

[0013] Preferably, a limiting ring is fixedly installed on the inner wall of the mounting groove, and the limiting ring is sleeved between the second universal joint and the second gear, thereby realizing the function of limiting the second gear and improving the stability of the transmission mechanism operation.

[0014] Preferably, both the first gear and the second gear are conical, and the first gear and the second gear are perpendicularly distributed, which realizes the function of changing the rotation direction.

[0015] This utility model provides a lawn mower with the following beneficial effects:

[0016] A reinforcing ring is fixedly installed on the bottom periphery of the chassis. Both the chassis and the reinforcing ring are made of aluminum alloy, and the outer diameter of the reinforcing ring is larger than that of the chassis. Its appearance is more in line with modern visual aesthetics. At the same time, the chassis is thicker, making it more robust and durable, and more robust, durable and beautiful than traditional steel chassis.

[0017] The engine's internal output end is connected to a first universal joint, and the other end of the first universal joint is connected to a drive shaft and a telescopic sleeve. The other end of the telescopic sleeve is connected to a second universal joint, and the second gear meshes with the first gear. This prevents the system from slipping and failing to move under special circumstances, thus affecting work efficiency and helping to reduce the failure rate of the self-propelled system. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a bottom view of the structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the outer shell of this utility model;

[0022] Figure 4 This is a schematic diagram of the structural transmission of this utility model.

[0023] In the diagram: 1. Outer shell; 2. Front wheel; 3. Rear wheel; 4. Engine; 5. Push rod; 6. Grass collection bag; 7. Chassis; 8. Reinforcing ring; 9. Blade; 10. Mounting slot; 11. Limiting ring; 12. First gear; 13. First universal joint; 14. Drive shaft; 15. Telescopic sleeve; 16. Second universal joint; 17. Second gear. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This embodiment proposes a lawn mower.

[0026] Example 1, as Figures 1 to 2 As shown, this embodiment proposes a lawn mower, including a housing 1.

[0027] A front wheel 2 is installed at the bottom front end of the outer shell 1, a rear wheel 3 is installed at the bottom rear end of the outer shell 1, an engine 4 is installed at the top of the outer shell 1, a push rod 5 is hinged to the top rear end of the outer shell 1, a grass collection bag 6 is connected to the rear end of the outer shell 1, and a blade 9 is installed at the bottom of the outer shell 1. Both the front wheel 2 and the rear wheel 3 are made of rubber and have anti-slip patterns on their surfaces.

[0028] The protective component is located at the bottom of the housing 1. The protective component includes a chassis 7, which is welded to the bottom of the housing 1 and wraps around the blade 9. A reinforcing ring 8 is fixedly installed at the bottom of the chassis 7. The chassis 7 and the reinforcing ring 8 are made of aluminum alloy, and the outer diameter of the reinforcing ring 8 is larger than the outer diameter of the chassis 7.

[0029] The first universal joint 13, drive shaft 14, telescopic sleeve 15 and second universal joint 16 used in this application are products that can be purchased directly from the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0030] In the above embodiment, when in use, the staff can hold the push rod 5 and start the engine 4. The engine 4 can drive the rear wheel 3 to rotate, thereby moving the entire device. At the same time, the blade 9 rotates to trim the lawn. The chassis 7 and the reinforcing ring 8 can protect the blade 9. Finally, the trimmed weeds will be sucked into the grass collection bag 6.

[0031] Example 2, as Figures 3 to 4 As shown, based on the same concept as the above embodiment, this embodiment also proposes: a transmission mechanism, which is set between the rear wheel 3 and the engine 4. The transmission mechanism includes a first gear 12, which is fixedly installed in the middle of the rear wheel 3. An installation groove 10 is opened inside the housing 1. The internal output end of the engine 4 is directly connected to a first universal joint 13, and the other end of the first universal joint 13 is fixedly connected to a drive shaft 14. A telescopic sleeve 15 is provided on the outside of one end of the drive shaft 14. A second universal joint 16 is fixedly connected to the other end of the telescopic sleeve 15, and a second gear 17 is fixedly installed on the other end of the second universal joint 16. The second gear 17 meshes with the first gear 12. The drive shaft 14 and the telescopic sleeve 15 are both located inside the installation groove 10. A limit ring 11 is fixedly installed on the inner wall of the installation groove 10, and the limit ring 11 is sleeved between the second universal joint 16 and the second gear 17. The first gear 12 and the second gear 17 are both set as conical and are vertically distributed.

[0032] In the above embodiment, when the engine 4 is started, the output end of the engine 4 will drive the first universal joint 13 to rotate. The first universal joint 13 can drive the drive shaft 14 and the telescopic sleeve 15 to rotate. The telescopic sleeve 15 can drive the second universal joint 16 to rotate. The second universal joint 16 can drive the second gear 17 to rotate. The second gear 17 can drive the first gear 12 to rotate, and finally drive the rear wheel 3 to rotate, so that the device can walk on the lawn.

[0033] Finally, several points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may change. Second, the accompanying drawings of the embodiments disclosed in this utility model only involve structures relevant to the embodiments disclosed in this utility model. Other structures can refer to common designs. Where there is no conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lawn mower, comprising a housing (1), characterized in that: A front wheel (2) is installed at the bottom front end of the outer shell (1), a rear wheel (3) is installed at the bottom rear end of the outer shell (1), an engine (4) is installed at the top of the outer shell (1), a push rod (5) is hinged to the top rear end of the outer shell (1), a grass collection bag (6) is connected to the rear end of the outer shell (1), and a blade (9) is installed at the bottom of the outer shell (1). The protective component is located at the bottom of the housing (1). The protective component includes a chassis (7), which is welded to the bottom of the housing (1) and wraps around the blade (9). A reinforcing ring (8) is fixedly installed at the bottom of the chassis (7). A transmission mechanism is disposed between the rear wheel (3) and the engine (4).

2. The lawn mower according to claim 1, characterized in that: Both the front wheel (2) and the rear wheel (3) are made of rubber and have anti-slip patterns on their surfaces.

3. A lawn mower according to claim 1, characterized in that: The chassis (7) and reinforcing ring (8) are made of aluminum alloy.

4. A lawn mower according to claim 1, characterized in that: The outer diameter of the reinforcing ring (8) is larger than the outer diameter of the chassis (7).

5. A lawn mower according to claim 1, characterized in that: The transmission mechanism includes a first gear (12), which is fixedly installed in the middle of the rear wheel (3). The housing (1) has an installation groove (10) inside. The internal output end of the engine (4) is directly connected to a first universal joint (13), and the other end of the first universal joint (13) is fixedly connected to a drive shaft (14). One end of the drive shaft (14) is externally provided with a telescopic sleeve (15), and the other end of the telescopic sleeve (15) is fixedly connected to a second universal joint (16). The other end of the second universal joint (16) is fixedly installed with a second gear (17), which meshes with the first gear (12). The drive shaft (14) and the telescopic sleeve (15) are both located inside the installation groove (10).

6. A lawn mower according to claim 5, characterized in that: A limiting ring (11) is fixedly installed on the inner wall of the mounting groove (10), and the limiting ring (11) is sleeved between the second universal joint (16) and the second gear (17).

7. A lawn mower according to claim 5, characterized in that: Both the first gear (12) and the second gear (17) are set to be conical, and the first gear (12) and the second gear (17) are vertically distributed.

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