Emergency stop button for a lawnmower

Abstract

The application discloses an emergency stop button of a mower, which comprises a mounting seat arranged on the top of a mower shell and a button cover arranged on the mounting seat. The mounting seat is provided with a flap mounting support, and the flap mounting support is hingedly connected with an emergency stop flap. One end of the emergency stop flap is an inductive end, and the other end is a pressing end. The inductive end of the emergency stop flap is provided with a magnet. The lower portion of the mounting seat is provided with a magnetometer matched with the magnet. The pressing end of the emergency stop flap is abutted against the bottom of the button cover. A reset elastic piece is arranged between the button cover and the mounting seat. The structure is compact and has good waterproof performance.

Description

Technical Field

[0001] This application relates to an emergency stop button for a lawnmower, belonging to the field of intelligent lawnmower technology. Background Technology

[0002] As an automated device operating in complex outdoor environments, the safety of lawnmower robots is paramount, and therefore they are typically equipped with emergency stop switches. Currently, there are two main methods for implementing emergency stop switches: one uses a mechanical push-button switch, and the other uses a non-contact sensing solution combining a magnet and a Hall effect sensor. However, both solutions have certain drawbacks in practical applications, affecting product reliability, waterproofing performance, and the flexibility of structural design.

[0003] Firstly, for designs using push-button tactile switches, the switch body must be directly mounted on the device housing for user operation. This design requires a physical opening or weak point in the seal between the switch and the housing, thus compromising the integrity of the overall housing. Although sealing can be achieved using rubber sealing rings, during long-term outdoor use, especially under the influence of rain, moisture, and dust, the seals are prone to aging or damage, allowing moisture and impurities to penetrate the machine. This severely affects the machine's waterproof rating and electrical safety, reducing the product's environmental adaptability and lifespan.

[0004] Secondly, while the traditional non-contact emergency stop solution using magnets and Hall sensors avoids external openings and improves waterproofing, its structural layout has significant limitations. Not only must the Hall sensor be installed vertically, but sufficient space must be reserved along its installation path for fixing the sensor body and soldering its pins. Within the compact internal structure of the lawnmower robot's upper shell, finding a suitable vertical installation position is often difficult, requiring additional design of fixing plates, brackets, and other structural components for positioning. This not only increases structural complexity and component costs but also occupies valuable internal space, hindering the miniaturization and integration of the entire machine. Summary of the Invention

[0005] The purpose of this application is to overcome the problems existing in the prior art and provide an emergency stop button for a lawnmower that has a compact structure and good waterproof performance.

[0006] To solve the above technical problems, this application provides an emergency stop button for a lawnmower, comprising a mounting base disposed on the top of the lawnmower housing, and a button cover disposed on the mounting base, characterized in that: The mounting base is provided with a rocker mounting bracket, and an emergency stop rocker is hinged to the upper part of the rocker mounting bracket. One end of the emergency stop rocker is a sensing end and the other end is a pressing end. A magnet is installed on the sensing end of the emergency stop rocker. A magnetometer matching the magnet is provided below the mounting base. The pressing end of the emergency stop rocker abuts against the bottom of the button cover. A reset elastic element is provided between the button cover and the mounting base.

[0007] Furthermore, a balance bracket is provided between the button cover and the mounting base. The balance bracket includes an inclined support rod. One end of the support rod is bent into a leg and inserted into a hole at the bottom of the button cover. The other end of the support rod is fixed to the bottom of the mounting base.

[0008] Furthermore, the magnetometer is a Hall sensor and is located directly below the magnet.

[0009] Furthermore, the emergency stop rocker is a force-intensive lever, the distance from the lower pressing end to the hinge shaft is L1, and the distance from the hinge shaft to the center of the magnet is L2, where L1:L2=1:(1.1~3).

[0010] Furthermore, the sensing end of the emergency stop rocker is provided with a magnet mounting base, and the magnet is fixed to the magnet mounting base by injection molding, adhesive bonding or snap-fit ​​connection.

[0011] Furthermore, the reset elastic element is a reset spring, and the top of the mounting base is also provided with a spring guide post. The reset spring is sleeved on the outer periphery of the spring guide post, and two spring guide posts are symmetrically arranged along the width direction of the lawnmower housing.

[0012] Furthermore, the mounting base is also provided with an iron block fixing seat, and an iron block is fixed in the iron block fixing seat. The iron block is located between the magnet and the rocker mounting bracket and is closer to the magnet.

[0013] Compared with the prior art, this application has achieved the following beneficial effects: the structure is simple and compact, the problem of large installation space for emergency stop switches is solved by setting an emergency stop rocker, and at the same time, it has good waterproof performance and low production cost. Attached Figure Description

[0014] The present application 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 application.

[0015] Figure 1 This is an exploded view of the emergency stop button in this application; Figure 2 This image shows the lawnmower in normal working condition and with the emergency stop button released. Figure 3Diagram showing the lawnmower in normal working condition / with the balance bracket loosened; Figure 4 Cross-section of the emergency stop button being pressed. Figure 1 ; Figure 5 Cross-section of the emergency stop button being pressed. Figure 2 .

[0016] In the diagram: 1. Mounting base, 1a. Rocker mounting bracket, 1b. Spring guide post, 1c. Iron block fixing base, 2. Button cover, 3. Emergency stop rocker, 3a. Magnet mounting base, 4. Magnet, 5. Magnetometer, 6. Balance bracket, 7. Reset spring, 8. Iron block. Detailed Implementation

[0017] In the following description of this application, 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 application and simplifying the description, and do not mean that the device must have a specific orientation.

[0018] To make the technical means, creative features, objectives and effects of this application easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this application.

[0019] 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 application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0020] like Figure 1 and Figure 2 As shown, an emergency stop button for a lawnmower according to this application includes a mounting base 1 located on the top of the lawnmower housing and a button cover 2 covering the mounting base 1. The mounting base 1 is provided with a rocker mounting bracket 1a, and an emergency stop rocker 3 is hinged to the upper part of the rocker mounting bracket 1a. One end of the emergency stop rocker 3 is a sensing end and the other end is a pressing end. A magnet 4 is provided at the sensing end of the emergency stop rocker 3. A magnetometer 5 matching the magnet 4 is provided below the mounting base 1. The pressing end of the emergency stop rocker 3 abuts against the bottom of the button cover 2. A reset elastic element is provided between the button cover 2 and the mounting base 1.

[0021] The sensing end of the emergency stop rocker 3 is provided with a magnet mounting base 3a, and the magnet 4 is fixed to the magnet mounting base 3a by injection molding, gluing or snap-fit ​​connection.

[0022] A balance bracket 6 is provided between the button cover 2 and the mounting base 1. The balance bracket 6 includes an inclined support rod, one end of which is bent into a leg and inserted into a hole at the bottom of the button cover 2, and the other end of which is fixed to the bottom of the mounting base 1. The balance bracket 6 is used to enhance the feel of the button when the user presses it, and at the same time, it supports the button cover 2 during the normal operation of the lawnmower to prevent accidental activation of the magnetometer 5 due to grass bumps or other reasons.

[0023] Magnetometer 5 is a Hall sensor, located directly below magnet 4. Since the Hall sensor is positioned below mounting base 1, no additional mounting location or fixing plate is required, and there are no concerns about short circuits caused by rain or splashes.

[0024] The emergency stop rocker 3 is a force-consuming lever. The distance from the lower end to the hinge shaft is L1, and the distance from the hinge shaft to the center of the magnet 4 is L2, where L1:L2=1:(1.1~3). By setting up a force-consuming lever, the installation space inside the button cover 2 is saved, and emergency stop control is achieved even with the limited height of the button cover 2.

[0025] The reset elastic element can be a reset spring 7. The mounting base 1 is also provided with a spring guide post 1b. The reset spring 7 is sleeved on the spring guide post 1b. There are two spring guide posts 1b symmetrically arranged along the width direction of the lawnmower housing.

[0026] Mounting base 1 is also provided with a guide iron block 8, which is housed in the iron block fixing base 1c. The guide iron block 8 is located between the magnet 4 and the rocker mounting bracket 1a and is closer to the magnet 4.

[0027] like Figure 3 As shown, under normal operating conditions, the magnet 4 at the sensing end of the emergency stop rocker 3 is affected by gravity and the iron block 8, and will stably stay at a position close to the magnetometer 5. The magnetometer 5 continuously receives signals, and the lawnmower operates normally.

[0028] like Figure 4 and Figure 5 As shown, when the emergency stop button is pressed, the lower end of the emergency stop rocker 3 is pressed down, the sensing end of the emergency stop rocker 3 tilts up and touches the upper shell, making a "click" sound. At this time, the magnetometer 5 does not receive the signal from the magnet 4 and sends an emergency stop signal to the controller to stop the lawnmower. After the button is released, the reset spring 7 pushes the button cover 2 upward to reset it.

[0029] The above description is merely a preferred embodiment of this application, showing and describing the basic principles, main features, and advantages of this application. It is not intended to limit the scope of patent protection of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. In addition to the above embodiments, other implementation methods may be available without departing from the spirit and scope of this application. Various changes and modifications may also be made to this application. All technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by this application. The scope of protection claimed by this application is defined by the appended claims and their equivalents. Technical features not described in this application can be implemented by or using existing technology, and will not be elaborated upon here.

Claims

1. An emergency stop button for a lawnmower, comprising a mounting base disposed on the top of the lawnmower housing, and a button cover disposed on the mounting base, characterized in that: The mounting base is provided with a rocker mounting bracket, and an emergency stop rocker is hinged to the upper part of the rocker mounting bracket. One end of the emergency stop rocker is a sensing end and the other end is a pressing end. A magnet is installed on the sensing end of the emergency stop rocker. A magnetometer matching the magnet is provided below the mounting base. The pressing end of the emergency stop rocker abuts against the bottom of the button cover. A reset elastic element is provided between the button cover and the mounting base.

2. The emergency stop button for the lawnmower according to claim 1, characterized in that: A balance bracket is provided between the button cover and the mounting base. The balance bracket includes an inclined support rod. One end of the support rod is bent into a leg and inserted into a hole at the bottom of the button cover. The other end of the support rod is fixed to the bottom of the mounting base.

3. The emergency stop button for the lawnmower according to claim 1, characterized in that: The magnetometer is a Hall sensor and is located directly below the magnet.

4. The emergency stop button for the lawnmower according to claim 1, characterized in that: The emergency stop rocker is a force-intensive lever. The distance from the lower pressing end to the hinge shaft is L1, and the distance from the hinge shaft to the center of the magnet is L2, where L1:L2=1:(1.1~3).

5. The emergency stop button for a lawnmower according to claim 1, characterized in that: The sensing end of the emergency stop rocker is provided with a magnet mounting base, and the magnet is fixed to the magnet mounting base by injection molding, adhesive bonding or snap-fit ​​connection.

6. The emergency stop button for a lawnmower according to claim 1, characterized in that: The reset elastic element is a reset spring, and the top of the mounting base is also provided with a spring guide post. The reset spring is sleeved on the outer periphery of the spring guide post, and two spring guide posts are symmetrically arranged along the width direction of the lawnmower housing.

7. The emergency stop button for a lawnmower according to claim 1, characterized in that: The mounting base is also provided with an iron block fixing seat, and an iron block is fixed in the iron block fixing seat. The iron block is located between the magnet and the rocker mounting bracket and is closer to the magnet.

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