Safety collision switch of unmanned mower
By designing the unmanned lawn mower safety collision switch, the extrusion deformation contact of the insulated rubber skeleton and conductive rubber strips is used to solve the problem of damage to the lawn mower due to collision, and the safe shutdown and high sensitivity of the lawn mower are achieved.
Patent Information
- Application Number
- CN202421732141.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-22
AI Technical Summary
Lawn mowers are prone to damage when encountering obstacles such as stones, and the prior art is difficult to effectively prevent damage to lawn mowers.
A safety collision switch of unmanned lawn mower is designed, using an insulated rubber skeleton, semi-moon and arch conductive rubber strips, and a hollow structure. The contact conductive circuit breaker after extrusion and deformation is achieved to achieve safe shutdown of the lawn mower.
Effectively prevent lawn mower from being damaged by collision, improves the safety and sensitivity of lawn mower, and ensures that lawn mower can stop working in time when encountering obstacles.
Smart Images
Figure CN222982038U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pressure-sensitive safety switches, and particularly relates to a safety collision switch for an unmanned lawn mower. Background Art
[0002] Due to the complex working environment, the mowing blades of a lawn mower are often severely damaged, and the motor is easily damaged. When encountering obstacles such as stones, the mowing blades are easily damaged, and even the drive motor of the mowing component may be damaged due to excessive load. Currently, sensors, controllers and other structures are commonly used to control the lawn mower. When the lawn mower encounters obstacles such as stones, the controller controls the lawn mower to stop working to avoid damage to the lawn mower. Content of the Utility Model
[0003] The purpose of the utility model is to provide a safety collision switch for an unmanned lawn mower with a simple structure, high sensitivity and convenient use.
[0004] The technical solution of the utility model:
[0005] A safety collision switch for an unmanned lawn mower includes an insulating rubber skeleton. In the upper half of the insulating rubber skeleton, a semi-circular lower conductive rubber strip is arranged, with the semi-circle opening downward. Above the semi-circular lower conductive rubber strip, an arched upper conductive rubber strip is arranged. A first hollow structure is arranged between the lower conductive rubber strip and the upper conductive rubber strip. The first hollow structure is arched, and conductive wires are arranged in both the lower conductive rubber strip and the upper conductive rubber strip.
[0006] Preferably, a second hollow structure is arranged below the lower conductive rubber strip.
[0007] Preferably, the bottom of the second hollow structure is rectangular, with protrusions on both sides of the rectangle for buffering. There is an arc-shaped protrusion at the top of the rectangle, and the radian of the arc-shaped protrusion is the same as the radian of the downward opening of the semi-circle.
[0008] Preferably, the upper part of the insulating rubber skeleton is an arched structure, and the radian of the arched structure is the same as the radian of the arch of the upper conductive rubber strip. A strip-shaped opening is arranged on one side at the lower part of the rubber skeleton.
[0009] Preferably, the length of the lower end of the strip-shaped opening is shorter than the length of the upper end.
[0010] Preferably, the conductive wires are metal conductive wires. The conductive wire in the upper conductive rubber strip is located on one side of the upper conductive rubber strip, and the conductive wire in the lower conductive rubber strip is located in the middle of the lower conductive rubber strip.
[0011] Preferably, the conductive wires are copper wires.
[0012] Preferably, the bottom arc of the upper conductive rubber strip is the same as the top arc of the lower conductive rubber strip.
[0013] Advantages of the present utility model:
[0014] The present utility model has two hollow structures. The first hollow structure facilitates the contact between the lower conductive rubber strip and the upper conductive rubber strip after extrusion deformation. When there is no extrusion, the lower conductive rubber strip and the upper conductive rubber strip are not in contact, and the lawn mower works normally. When extruded, the lower conductive rubber strip and the upper conductive rubber strip come into contact after extrusion deformation, resulting in conductive open circuit and the lawn mower stopping working. The second hollow structure reduces the deformation difficulty of the rubber skeleton, improves the sensitivity, and ensures the safety of the lawn mower. A strip-shaped opening is provided on one side of the lower part of the rubber skeleton, which facilitates the installation of the safety collision switch of the unmanned lawn mower on the lawn mower.
[0015] The lower conductive rubber strip is semi-circular with a downward opening. An arched upper conductive rubber strip is provided above the semi-circular lower conductive rubber strip. A first hollow structure is provided between the lower conductive rubber strip and the upper conductive rubber strip. The first hollow structure is arched. Such an arc-shaped contact surface has a larger contact area and higher sensitivity, and the arc-shaped structure is easy to deform, further improving the sensitivity.
[0016] The conductive wire in the upper conductive rubber strip is located on one side of the upper conductive rubber strip, and the conductive wire in the lower conductive rubber strip is located in the middle of the lower conductive rubber strip, playing a good role in resisting bending. Description of the drawings
[0017] Figure 1 is a schematic cross-sectional structure diagram of the present utility model;
[0018] Figure 2 is a schematic structure diagram of the present utility model.
[0019] In the figure, 1 - insulating rubber skeleton, 2 - upper conductive rubber strip, 3 - lower conductive rubber strip, 4 - first hollow structure, 5 - second hollow structure, 6 - conductive wire, 7 - strip-shaped opening. Detailed implementation manners
[0020] As Figure 1-2 shown, a safety collision switch for an unmanned lawn mower includes an insulating rubber skeleton 1. The upper part of the insulating rubber skeleton 1 is an arched structure, and the arc of the arched structure is the same as the arc of the upper conductive rubber strip arch 2. A strip-shaped opening 7 is provided on one side of the lower part of the rubber skeleton 1, and the lower end length of the strip-shaped opening 7 is shorter than the upper end length.
[0021] In the upper half of the insulating rubber skeleton 1, a semi-circular lower conductive rubber strip 3 is arranged, with the semi-circle opening downward. Above the semi-circular lower conductive rubber strip 3, an arched upper conductive rubber strip 2 is arranged. A first hollow structure 4 is arranged between the lower conductive rubber strip 3 and the upper conductive rubber strip 2. The first hollow structure 4 is arched. Conductive wires 6 are arranged in both the lower conductive rubber strip 3 and the upper conductive rubber strip 2. The conductive wire 6 in the upper conductive rubber strip 2 is located on one side of the upper conductive rubber strip 2, and the conductive wire 6 in the lower conductive rubber strip 3 is located in the middle of the lower conductive rubber strip 3. The conductive wire 6 is a copper wire. A second hollow structure 5 is arranged below the lower conductive rubber strip 3. The bottom of the second hollow structure 5 is rectangular, with protrusions on both sides of the rectangle and an arc-shaped protrusion on the top of the rectangle. The radian of the arc-shaped protrusion is the same as the radian of the downward opening of the semi-circle.
[0022] During the use of the present utility model, the strip-shaped opening 7 is clamped to the sheet metal structure of the lawn mower, the conductive wire 6 is connected to an external power source, and the lawn mower starts to work. When the lawn mower touches obstacles such as stones, the insulating rubber skeleton 1 is squeezed, the first hollow structure 4 and the second hollow structure 5 are deformed, so that the upper conductive rubber strip 2 and the lower conductive rubber strip 3 come into contact and conduct electricity, and the lawn mower stops moving or rotating, protecting the safety of the lawn mower. The bottom radian of the upper conductive rubber strip 2 is the same as the top radian of the lower conductive rubber strip 3, increasing the contact area and improving the sensitivity. The second hollow structure 5 is also to improve the ease of deformation of the insulating rubber skeleton 1, improve the sensitivity, and ensure the safety of the lawn mower.
[0023] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to form equivalent embodiments with equivalent changes within the scope of the technical solution of the present utility model. However, as long as it does not depart from the content of the technical solution of the present utility model, any brief modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims
1. A safety collision switch for an unmanned lawn mower, characterized in that: It comprises an insulating rubber frame, wherein a crescent-shaped lower conductive rubber strip is arranged in the upper part of the insulating rubber frame, the crescent-shaped strip is opened downward, an arched upper conductive rubber strip is arranged above the crescent-shaped lower conductive rubber strip, a first hollow structure is arranged between the lower conductive rubber strip and the upper conductive rubber strip, the first hollow structure is arched, and conductive wires are arranged in both the lower conductive rubber strip and the upper conductive rubber strip.
2. The unmanned lawn mower safety collision switch according to claim 1, characterized in that: A second hollow structure is arranged below the lower conductive rubber strip.
3. The unmanned lawn mower safety collision switch according to claim 2, characterized in that: The bottom of the second hollow structure is a rectangle, with protrusions on both sides of the rectangle and an arc-shaped protrusion on the top of the rectangle. The curvature of the arc-shaped protrusion is consistent with the curvature of the downward opening of the half-moon shape.
4. The unmanned lawn mower safety collision switch according to claim 1, characterized in that: The upper part of the insulating rubber frame is an arched structure, the curvature of the arched structure is consistent with the curvature of the upper conductive rubber strip arch, and the lower part of the rubber frame is provided with a strip-shaped opening toward one side.
5. The unmanned lawn mower safety collision switch according to claim 4, characterized in that: The length of the lower end of the strip-shaped opening is shorter than the length of the upper end.
6. The unmanned lawn mower safety collision switch according to claim 1, characterized in that: The conductive wire is a metal conductive wire, the conductive wire in the upper conductive rubber strip is located on one side of the upper conductive rubber strip, and the conductive wire in the lower conductive rubber strip is located in the middle of the lower conductive rubber strip.
7. The unmanned lawn mower safety collision switch according to claim 6, characterized in that: The conductive wire is a copper wire.
8. The unmanned lawn mower safety collision switch according to claim 1, characterized in that: The bottom of the upper conductive rubber strip and the top of the lower conductive rubber strip have the same curvature.