Collision support and protection trigger device and mower

Abstract

The utility model discloses a collision support and protection trigger device and hay mower, the device comprises a collision support structure and a protection trigger structure, when external force acts on the shell of the hay mower, the collision support structure supporting the shell guides the shell to deform, and then the protection trigger structure is triggered to inform the hay mower to execute safety protection action. Deformation, caused by collision and the like, of the shell of the mower is eliminated through the mechanical collision supporting structure, firstly, the mower is not prone to being damaged in the collision process, secondly, the distance between the magnet and the Hall element in the protection triggering structure changes due to the deformation of the shell, and after the protection triggering structure detects the collision on this basis, the protection triggering structure gives an alarm. The mower is notified to autonomously execute the safety protection action, complex safety protection control logic is not needed, and safety protection when the mower is collided is achieved through a simple mechanical structure.

Description

Technical Field

[0001] The present application relates to the technical field of collision protection for lawn mowers, and more specifically, to a collision support and protection triggering device and a lawn mower. Background Art

[0002] When a lawn mower has a mowing abnormality, it is hoped that a set of safety protection mechanisms will be triggered to ensure that the lawn mower is not damaged or the probability of damage is reduced. In the existing technical solutions, an emergency stop button is usually used to manually trigger the safety protection mechanism of the lawn mower by pressing the button. However, there are many situations in which mowing abnormalities occur. For example, when a lawn mower has a serious collision during the mowing process, in order to prevent the mowing disc from being damaged, it is expected that the lawn mower can intervene to execute the safety protection mechanism. However, usually, when a collision occurs, there is no one at the mowing site, so it is difficult to manually control the lawn mower to execute the safety protection mechanism by pressing the emergency stop button.

[0003] In order to solve this problem, in the prior art, a collision sensor is usually added inside the lawn mower, and a set of safety protection algorithms are built in. When the collision sensor detects a collision, the lawn mower automatically executes the algorithm to automatically control the start and stop of the mowing disc. However, the existing method controls the lawn mower to autonomously perform safety protection actions in a software manner, which has a high control cost, and the control process requires logical calculations, which is not conducive to the lawn mower's rapid response to collision safety protection. Utility Model Content

[0004] The present application aims to realize the autonomous intervention and execution of safety protection actions of the lawn mower in the event of a collision through a mechanical structure, and provides a collision support and protection triggering device and a lawn mower.

[0005] The technical solution provided by the utility model is to provide

[0006] A collision support and protection trigger device comprises a collision support structure and a protection trigger structure. When an external force acts on the outer shell of a lawn mower, the collision support structure supporting the outer shell guides the outer shell to deform, thereby triggering the protection trigger structure to notify the lawn mower to perform a safety protection action.

[0007] As an optional solution of the technical solution of the present application document, the collision support structure is fixedly mounted on the shell, and the elastic support member of the collision support structure has an elastic surface in contact with the body of the lawn mower when the lawn mower has not collided with the shell and the shell has not been deformed, and when the shell collides, the elastic support member undergoes elastic deformation.

[0008] As an optional solution to the technical solution of the present application document, the protective trigger structure includes a switch device and a sensor device, and there is a proximity distance range between the switch device and the sensor device that keeps the lawn mower in a normal working state. When the shell is deformed and the proximity distance between the switch device and the sensor device exceeds the proximity distance range, the protective trigger structure is triggered to perform a safety protection action for the lawn mower.

[0009] As an optional solution of the technical solution of the present application document, the switch device is arranged on the shell, and the sensor device is arranged on the body of the lawn mower; or the switch device is arranged on the body, and the sensor device is arranged on the shell; or the switch device and the sensor device are arranged on the shell, or are arranged on the body.

[0010] As an optional solution of the technical solution of this application document, the switching device is a magnet.

[0011] As an optional solution of the technical solution of this application document, the sensor device is a Hall element.

[0012] As an optional solution to the technical solution of the present application document, the Hall element is fixedly arranged on a fixing plate, and the fixing plate is fixedly connected to the housing via a first fixing bolt.

[0013] As an optional solution to the technical solution of the present application document, the number of the collision support structures is 4, two of the collision support structures are respectively arranged on the left side inside the shell at the front and rear along the length direction of the shell, and the remaining two collision support structures are respectively arranged on the right side inside the shell at the front and rear along the length direction of the shell, and the elastic support member is fixed to the shell by a second fixing bolt.

[0014] As an optional solution to the technical solution of the present application document, the number of the protective triggering structures is two, which are respectively arranged on the left and right sides of the shell away from the running wheels of the lawn mower and close to the front end of the lawn mower.

[0015] A lawn mower comprises the collision support and protection triggering device as described above.

[0016] The beneficial effect of the utility model is that the deformation of the outer shell of the lawn mower caused by collision and the like is absorbed by a mechanical collision support structure, firstly, the lawn mower is not easily damaged in a collision, and secondly, the distance between the magnet and the Hall element in the protection trigger structure changes due to the deformation of the outer shell. The protection trigger structure detects the collision based on this and notifies the lawn mower to autonomously perform safety protection actions. There is no need for complex safety protection control logic, and safety protection of the lawn mower in the event of a collision is achieved with a simple mechanical structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the overall position structure of a collision support and protection trigger device of a lawn mower disclosed in a preferred embodiment of the present application;

[0018] Figure 2 The collision support structure position and its exploded diagram of the lawn mower disclosed in a preferred embodiment of the present application;

[0019] Figure 3 The sensor component position and exploded diagram of the lawn mower disclosed in a preferred embodiment of the present application;

[0020] Explanation of the numbers in the figure: 1. housing; 12. switch device; 2. body; 3. collision support structure; 31. elastic support member; 32. second fixing bolt; 4. sensor member; 41. Hall element; 42. fixing plate; 43. first fixing bolt. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] This application provides a technical solution:

[0023] like Figure 1 As shown, the lawn mower includes a shell 1 and a body 2. In addition to the shell 1 and the body 2, the present application also includes a collision support structure 3 and a protective trigger structure. The collision support structure 3 is fixedly mounted on the shell 1. When the lawn mower does not collide with the shell 1 and the shell 1 does not deform, the elastic support member 31 of the collision support structure 3 has an elastic surface (such as Figure 2 A shown in the figure) contacts the body 2 of the lawn mower, and a rubber sleeve is fixedly arranged on the elastic surface of the elastic support member 31, which can protect the elastic support member 31 and prevent its own structure from being damaged by direct impact force. When the shell 1 collides, the elastic support member 31 undergoes elastic deformation; the number of collision support structures 3 is 4, 2 collision support structures 3 are respectively arranged on the left side of the shell 1 in the front and rear along the length direction of the shell 1, and the remaining 2 collision support structures 3 are respectively arranged on the right side of the shell 1 in the front and rear along the length direction of the shell 1. The elastic support member 31 is fixed to the shell 1 by a second fixing bolt 32. When the elastic support member 31 undergoes elastic changes, it can drive the shell body to move;

[0024] like Figure 1 and Figure 3As shown, there are two protective trigger structures, which are respectively arranged on the left and right sides of the housing 1 away from the running wheels of the lawn mower and close to the front end of the lawn mower. The protective trigger structure includes a switch device 12 and a sensor device 4. There is a proximity distance range between the switch device and the sensor device 4 to keep the lawn mower in a normal working state. When the housing 1 is deformed and the proximity distance between the switch device and the sensor device 4 exceeds the proximity distance range, the protective trigger structure is triggered to perform a safety protection action for the lawn mower, such as Figure 2 As shown, the switch device is arranged on the housing 1, and the sensor device 4 is arranged on the body 2 of the lawn mower; or the switch device is arranged on the body 2, and the sensor device 4 is arranged on the housing 1; or the switch device and the sensor device 4 are arranged on the housing 1, or are arranged on the body 2, and the switch device 12 is a magnet; Figure 3 As shown, the sensor element 4 is a Hall element 41, which is fixedly arranged on a fixing plate 42, and the fixing plate 42 is fixedly connected to the housing 1 through a first fixing bolt 43.

[0025] When the magnet 12 moves away from or approaches the Hall element 41, the magnetic induction field changes, which triggers a collision switch signal. This signal is transmitted to the control module of the machine body 2, and the control module of the machine body 2 controls the movement state of the cutting mechanism and the walking mechanism according to the different signals.

[0026] When the shell collides, the four elastic supports at the front and rear are deformed elastically under force, and the elastic supports drive the main body of the shell to move, and the magnet fixed to the main body of the shell moves synchronously. When the magnet is away from the Hall element, the magnetic field strength decreases, triggering the collision switch signal. The control module will control the walking mechanism to stop moving immediately, and the blade will stop rotating, and then execute the retreat command. When the magnet approaches the Hall element, the magnetic field strength increases, triggering the collision switch signal, the walking mechanism stops retreating, and the blade is started to execute the mowing command. No manual identification by the operator is required, and timely adjustments can be made to avoid secondary collisions and increase the service life of the device.

[0027] Although examples of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A collision support and protection trigger device, characterized in that: It comprises a collision support structure (3) and a protection trigger structure, and when an external force acts on the outer shell (1) of the lawn mower, the collision support structure (3) supporting the outer shell (1) guides the outer shell (1) to deform, thereby triggering the protection trigger structure to notify the lawn mower to perform a safety protection action; The protection trigger structure comprises a switch device (12) and a sensor device (4); a proximity distance range exists between the switch device and the sensor device (4) for keeping the lawn mower in a normal working state; when the housing (1) is deformed and the proximity distance between the switch device and the sensor device (4) exceeds the proximity distance range, the protection trigger structure is triggered to perform a safety protection action for the lawn mower; The switch device is arranged on the housing (1), and the sensor device (4) is arranged on the body (2) of the lawn mower; or the switch device is arranged on the body (2), and the sensor device (4) is arranged on the housing (1); or the switch device and the sensor device (4) are arranged on the housing (1), or are arranged on the body (2).

2. The collision support and protection triggering device according to claim 1, characterized in that: The collision support structure (3) is fixedly mounted on the outer shell (1); when the lawn mower has not collided with the outer shell (1) and has not deformed, the elastic surface of the elastic support member (31) of the collision support structure (3) contacts the body (2) of the lawn mower; when the outer shell (1) collides, the elastic support member (31) undergoes elastic deformation.

3. The collision support and protection triggering device according to claim 1, characterized in that: The switching device (12) is a magnet.

4. The collision support and protection triggering device according to claim 1, characterized in that: The sensor device (4) is a Hall element (41).

5. The collision support and protection triggering device according to claim 4, characterized in that: The Hall element (41) is fixedly arranged on a fixing plate (42), and the fixing plate (42) is fixedly connected to the housing (1) via a first fixing bolt (43).

6. The collision support and protection triggering device according to claim 2, characterized in that: The number of the collision support structures (3) is four, two of which are arranged on the left side inside the shell (1) at the front and rear along the length direction of the shell (1), and the remaining two of which are arranged on the right side inside the shell (1) at the front and rear along the length direction of the shell (1). The elastic support member (31) is fixed to the shell (1) by a second fixing bolt (32).

7. The collision support and protection triggering device according to claim 1, characterized in that: The number of the protection trigger structures is two, which are respectively arranged on the left and right sides of the housing (1) away from the running wheels of the lawn mower and close to the front end of the lawn mower.

8. A lawn mower, characterized in that: A collision support and protection triggering device as described in any one of claims 1 to 7 is installed.

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