Self-propelled lawn mower with avoidance structure

Abstract

The utility model provides a kind of self-propelled lawn mower with avoiding structure, it is related to lawn mower technical field, including lawn mower main body, the surface of lawn mower main body is connected with avoiding alarm component, the avoiding alarm component includes fixed frame, the inside center position of fixed frame is connected with laser radar, one side of the laser radar is connected with ultrasonic sensor, one side of the ultrasonic sensor is connected with infrared sensor.In the utility model, laser radar can accurately detect terrain fluctuation, obstacle distance and shape, infrared sensor performs excellently under night or low light environment, can detect human body, animal and other heat targets, make up the deficiency of laser radar under dim light, ultrasonic sensor is low in cost, high in short-distance detection accuracy, and is suitable for obstacle avoidance under low-speed scene. Through each sensor and alarm, effective avoidance can be achieved, and environmental perception ability and safety can be significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of lawnmower technology, and in particular to a self-propelled lawnmower with a collision avoidance structure. Background Technology

[0002] A lawnmower is a mechanized device used for mowing lawns and vegetation, and is widely used in gardens, sports fields, street greening, and private gardens.

[0003] As indicated by announcement number CN204259405U, a hand-push self-propelled lawnmower belongs to the field of garden machinery manufacturing. It includes a cutter head, engine, wheels, walking mechanism, push handle, control unit, and grass storage box. No additional grass collection bags are required. The lawnmower's grass storage box and push handle are newly designed, featuring a streamlined body with multiple ventilation holes and a non-slip push handle. Unlike existing lawnmowers on the market, it effectively collects the cut weeds while meeting people's lawn mowing needs, making it more aesthetically pleasing and practical.

[0004] This patent can automatically collect the trimmed weeds, but existing lawnmowers do not have multiple sensors, and obstacle recognition is easily affected by high-speed movement or complex terrain. If obstacles are not detected in time, collisions are likely to occur. Utility Model Content

[0005] The purpose of this invention is to solve the problem that existing lawnmowers do not have multiple sensors, which can affect obstacle recognition during high-speed movement or complex terrain, and the failure to detect obstacles in time can easily lead to collisions.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a self-propelled lawnmower with an obstacle avoidance structure, comprising a lawnmower body, an obstacle avoidance alarm component connected to the surface of the lawnmower body, the obstacle avoidance alarm component comprising a fixed frame, a laser radar connected to the center of the fixed frame, an ultrasonic sensor connected to one side of the laser radar, an infrared sensor connected to one side of the ultrasonic sensor, a mounting groove provided on the top of the fixed frame, a top cover provided inside the mounting groove, slots provided on both sides of the top cover, fixing blocks connected to both sides of the fixed frame, a first spring connected inside the fixing block, a push plate connected to one side of the first spring, a lever connected to the top of the push plate, an insert connected to one side of the push plate, and an alarm connected to the top of the lawnmower body.

[0007] Furthermore, the infrared sensor, ultrasonic sensor, lidar, and alarm are all electrically connected, and the outer surfaces of both sides of the top cover are in contact with the inner wall of the mounting groove.

[0008] Furthermore, the top cover and the mounting groove are slidably connected, the surface of the insert block is provided with an oblique opening, and the insert block and the slot are connected by an insertion.

[0009] Furthermore, the outer surface of the push plate is in contact with the inner wall of the fixing block, and the push plate and the first spring form an elastic structure.

[0010] Furthermore, the front end of the lawnmower body is connected to an anti-collision component, which includes a support frame. Dampers are connected to the four corners of the support frame, and slots are opened inside both sides of the support frame.

[0011] Furthermore, a connecting rod is inserted into the inside of the slot, and a second spring is sleeved on both sides of the connecting rod. A slider is connected to the inner side of each of the two sets of second springs.

[0012] Furthermore, a first rotating shaft is connected to the top of the slider, a sliding rod is connected to the surface of the first rotating shaft, and a second rotating shaft is connected to one side of the sliding rod.

[0013] Furthermore, the top of the four sets of dampers is connected to a crash plate, the slider and the connecting rod form a sliding connection, and the slider and the second spring form an elastic structure.

[0014] Furthermore, the slider is rotatably connected to the sliding rod via the first rotating shaft, and the sliding rod is rotatably connected to the anti-collision plate via the second rotating shaft.

[0015] Furthermore, the outer surface of the slider is in contact with the inner wall of the slot.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] 1. In this invention, the lidar can accurately detect terrain undulations, obstacle distances, and shapes; the infrared sensor performs excellently at night or in low-light environments, detecting heat-generating targets such as humans and animals, thus compensating for the lidar's shortcomings in low light; and the ultrasonic sensor is low-cost and has high accuracy at close range, making it suitable for obstacle avoidance in low-speed scenarios. By combining these sensors with an alarm, effective obstacle avoidance can be achieved, significantly improving environmental awareness and safety.

[0018] 2. In this utility model, when an obstacle is accidentally encountered, the second spring, in conjunction with the damper, can achieve the purpose of anti-collision and shock absorption, thereby protecting the main body of the lawnmower and avoiding the problem that accidental collisions can easily damage the main body of the lawnmower. Attached Figure Description

[0019] Figure 1A three-dimensional structural diagram of a self-propelled lawnmower with an obstacle avoidance structure is provided for this utility model.

[0020] Figure 2 This utility model provides an exploded view of the fixing frame of a self-propelled lawnmower with an obstacle avoidance structure.

[0021] Figure 3 This utility model provides a cross-sectional structural diagram of the fixing block of a self-propelled lawnmower with an obstacle avoidance structure.

[0022] Figure 4 This utility model provides an exploded view of the fixing frame of a self-propelled lawnmower with an obstacle avoidance structure.

[0023] Figure 5 This invention presents an exploded structural diagram of the support frame for a self-propelled lawnmower with an obstacle avoidance structure.

[0024] Legend: 1. Lawn mower body; 2. Avoidance alarm assembly; 201. Fixing frame; 202. Infrared sensor; 203. Ultrasonic sensor; 204. LiDAR; 205. Top cover; 206. Slot; 207. Mounting slot; 208. Fixing block; 209. First spring; 210. Push plate; 211. Toggle block; 212. Insert block; 213. Alarm; 3. Anti-collision assembly; 301. Support frame; 302. Damper; 303. Slot; 304. Connecting rod; 305. Second spring; 306. Slider; 307. First rotating shaft; 308. Sliding rod; 309. Second rotating shaft; 310. Anti-collision plate. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0027] Example 1, as Figure 1 - Figure 3As shown, this utility model provides a self-propelled lawnmower with a collision avoidance structure, including a lawnmower body 1. A collision avoidance alarm component 2 is connected to the surface of the lawnmower body 1. The collision avoidance alarm component 2 includes a fixing frame 201. A laser radar 204 is connected to the center of the fixing frame 201. An ultrasonic sensor 203 is connected to one side of the laser radar 204. An infrared sensor 202 is connected to one side of the ultrasonic sensor 203. A mounting groove 207 is opened on the top of the fixing frame 201. A top cover 205 is provided inside the mounting groove 207. Slots 206 are opened on both sides of the top cover 205. Fixing blocks 208 are connected to both sides of the fixing frame 201. A first spring 2 is connected inside the fixing block 208. 09. A push plate 210 is connected to one side of the first spring 209. A lever 211 is connected to the top of the push plate 210. An insert block 212 is connected to one side of the push plate 210. An alarm 213 is connected to the top of the lawnmower body 1. An infrared sensor 202, an ultrasonic sensor 203, a laser radar 204, and the alarm 213 are all electrically connected. The outer surfaces of both sides of the top cover 205 are in contact with the inner wall of the mounting groove 207. The top cover 205 and the mounting groove 207 form a sliding connection. The surface of the insert block 212 has a bevel. The insert block 212 and the slot 206 form an insertion connection. The outer surface of the push plate 210 is in contact with the inner wall of the fixing block 208. The push plate 210 and the first spring 209 form an elastic structure.

[0028] The effect achieved in Embodiment 1 is that, when the lawnmower body 1 is working, the lidar 204 can accurately detect terrain undulations, obstacle distances, and shapes; the infrared sensor 202 performs excellently in nighttime or low-light environments, and can detect heat targets such as humans and animals, compensating for the lidar 204's shortcomings in low light; and the ultrasonic sensor 203 is low-cost and has high accuracy in close-range detection, making it suitable for obstacle avoidance in low-speed scenarios. Thus, by using these sensors in conjunction with the alarm 213, effective obstacle avoidance can be achieved, while significantly improving environmental awareness and safety. When it is necessary to open the mounting bracket 201 to replace or repair the internal sensor, the two sets of levers 211 can be pulled to both sides simultaneously, causing the insert 212 to retract, so that the insert 212 can be pulled out of the slot 206 of the top cover 205. Then, pull the top cover 205 outward, so that the top cover 205 can slide out of the mounting groove 207 to complete the disassembly. After the internal sensor is repaired or replaced, the top cover 205 can be pushed into the mounting groove 207. The insert 212 will automatically retract after being squeezed. When the top cover 205 is fully pushed into the mounting groove 207, the first spring 209 will push the push plate 210 through its own elasticity, causing the insert 212 to be inserted into the slot 206 and fixed. This completes the disassembly of the top cover 205, which facilitates the repair or replacement of the internal processor and increases the overall practicality.

[0029] Example 2, as Figure 4 and Figure 5 As shown, the front end of the lawnmower body 1 is connected to an anti-collision component 3. The anti-collision component 3 includes a support frame 301. Dampers 302 are connected to each of the four corners of the support frame 301. Grooves 303 are opened inside both sides of the support frame 301. Connecting rods 304 are inserted into the grooves 303. Second springs 305 are sleeved on both sides of the connecting rods 304. Slider 306 is connected to the inner side of each of the two sets of second springs 305. A first rotating shaft 307 is connected to the top of the slider 306. A sliding rod 308 is connected to the surface of shaft 307. A second rotating shaft 309 is connected to one side of the sliding rod 308. A crash plate 310 is connected to the top of the four sets of dampers 302. A sliding connection is formed between the slider 306 and the connecting rod 304. An elastic structure is formed between the slider 306 and the second spring 305. The slider 306 is rotatably connected to the sliding rod 308 through the first rotating shaft 307. The sliding rod 308 is rotatably connected to the crash plate 310 through the second rotating shaft 309.

[0030] The effect achieved in Embodiment 2 is that when the anti-collision plate 310 collides with an obstacle, the anti-collision plate 310 will be squeezed towards the lawnmower body 1 under the impact force. Then, the anti-collision plate 310 will rotate through the second rotating shaft 309 and the sliding rod 308, thereby causing the other side of the sliding rod 308 to rotate with the first rotating shaft 307. This allows the first rotating shaft 307 to push the slider 306 to squeeze the second spring 305. In this way, it can work with the four sets of dampers 302 to play a shock absorption and protection role. When accidentally hitting an obstacle, the second spring 305 can also work with the dampers 302 to achieve a collision and shock absorption purpose, thereby protecting the lawnmower body 1 and avoiding the problem that accidental collisions can easily damage the lawnmower body 1.

[0031] Working principle: The lidar 204 can accurately detect terrain undulations, obstacle distances, and shapes. The infrared sensor 202 performs excellently in nighttime or low-light environments, detecting heat targets such as humans and animals, compensating for the lidar 204's shortcomings in low light. The ultrasonic sensor 203 is low-cost and has high accuracy at close range, suitable for obstacle avoidance in low-speed scenarios. Effective obstacle avoidance can be achieved through these sensors and the alarm 213, significantly improving environmental awareness and safety. In the event of unintentional obstacle collision, the second spring 305, in conjunction with the damper 302, provides shock absorption and protection for the lawnmower body 1, preventing damage from accidental impacts.

[0032] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A self-propelled lawnmower with a collision avoidance structure, comprising a lawnmower body (1), characterized in that: The surface of the lawnmower body (1) is connected to an avoidance alarm component (2); The avoidance alarm assembly (2) includes a fixed frame (201), a laser radar (204) is connected to the center of the fixed frame (201), an ultrasonic sensor (203) is connected to one side of the laser radar (204), an infrared sensor (202) is connected to one side of the ultrasonic sensor (203), an installation groove (207) is provided on the top of the fixed frame (201), a top cover (205) is provided inside the installation groove (207), slots (206) are provided on both sides of the top cover (205), fixing blocks (208) are connected to both sides of the fixed frame (201), a first spring (209) is connected inside the fixing block (208), a push plate (210) is connected to one side of the first spring (209), a toggle block (211) is connected to the top of the push plate (210), an insert block (212) is connected to one side of the push plate (210), and an alarm (213) is connected to the top of the lawnmower body (1).

2. The self-propelled lawnmower with a collision avoidance structure according to claim 1, characterized in that: The infrared sensor (202), ultrasonic sensor (203), lidar (204) and alarm (213) are all electrically connected, and the outer surfaces of both sides of the top cover (205) are in contact with the inner wall of the mounting groove (207).

3. A self-propelled lawnmower with a collision avoidance structure according to claim 2, characterized in that: The top cover (205) and the mounting groove (207) are slidably connected, the surface of the insert (212) is provided with a bevel, and the insert (212) and the slot (206) are connected by a mating.

4. A self-propelled lawnmower with a collision avoidance structure according to claim 3, characterized in that: The outer surface of the push plate (210) is in contact with the inner wall of the fixing block (208), and the push plate (210) and the first spring (209) form an elastic structure.

5. A self-propelled lawnmower with a collision avoidance structure according to claim 1, characterized in that: The front end of the lawnmower body (1) is connected to an anti-collision component (3). The anti-collision component (3) includes a support frame (301). Dampers (302) are connected to the four corners of the support frame (301). Slots (303) are opened inside both sides of the support frame (301).

6. A self-propelled lawnmower with a collision avoidance structure according to claim 5, characterized in that: A connecting rod (304) is inserted into the slot (303), and a second spring (305) is sleeved on both sides of the connecting rod (304). A slider (306) is connected to the inner side of each of the two sets of second springs (305).

7. A self-propelled lawnmower with a collision avoidance structure according to claim 6, characterized in that: The top of the slider (306) is connected to a first rotating shaft (307), the surface of the first rotating shaft (307) is connected to a sliding rod (308), and one side of the sliding rod (308) is connected to a second rotating shaft (309).

8. A self-propelled lawnmower with a collision avoidance structure according to claim 7, characterized in that: The top of the four dampers (302) is connected to a crash plate (310), the slider (306) and the connecting rod (304) form a sliding connection, and the slider (306) and the second spring (305) form an elastic structure.

9. A self-propelled lawnmower with a collision avoidance structure according to claim 8, characterized in that: The slider (306) is rotatably connected to the sliding rod (308) via the first rotating shaft (307), and the sliding rod (308) is rotatably connected to the anti-collision plate (310) via the second rotating shaft (309).

10. A self-propelled lawnmower with a collision avoidance structure according to claim 9, characterized in that: The outer surface of the slider (306) is in contact with the inner wall of the slot (303).

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