Shock absorption device of safety plate for shrub trimmer

Abstract

The present invention relates to a shock absorption device of a safety plate for a shrub trimmer provided with a safety plate mounted on the lower portion of a blade in order to protect the blade, and provides a shock absorption device of a safety plate for a shrub trimmer, comprising: an upper safety plate support member formed at the upper portion of a safety plate for supporting a blade; and a lower safety plate support member coupled to the upper safety plate support member for supporting the safety plate; wherein safety plate rotation-restraining means are formed to correspond to each other on an inner periphery of a through hole of the safety plate and an outer periphery of the upper safety plate support member or the lower safety plate support member, and a rotation preventing die is fixed to a handle in order to prevent the rotation of the lower safety plate support member. According to the present invention, if a shock generated by a collision between the blade and debris is transmitted to the safety plate, by the safety plate and the upper safety plate support member or the lower safety plate support member provided with the safety plate rotation-restraining means, concave grooves of the rotation-restraining means move over elastic protrusions corresponding to each other such that the safety plate rotates in the direction that the shock is applied. Therefore, the shock is absorbed and the debris is deflected simultaneously, thereby preventing damage to the blade or the safety plate.

Description

technical field [0001] The invention relates to a safety plate impact absorber for a lawn mower. More specifically, a safety plate is provided at the lower part of the lawn mower to protect the mowing blade. If the mowing blade collides with a foreign object, the impact will be directly transmitted To the safety board, the safety board impact absorbing device is used to prevent the impact from causing damage or damage to the safety board. Background technique [0002] Generally, lawn mowers are used to remove weeds or to remove a large number of weeds with a small amount of force when cutting grass during tomb sweeping. The power device of the lawn mower rotates the mowing blades, so that a large area of ​​weeds can be cut in a short time Or vines. [0003] However, due to the high-speed rotation of the blade, when it collides with hard foreign objects such as stones, failures cannot be avoided, and there are also disadvantages such as blade fragments that cause injuries to...

AI Technical Summary

Problems solved by technology

[0003] However, due to the high-speed rotation of the blade, when it collides with hard foreign objects such as stones, failures cannot be avoided, and there are also disadvantages such as blade fragments that cause injuries to workers or people around them.

[0004] Therefore, the blade is protected by setting a safety plate for protecting the blade at the lower part of the blade, but when the above-mentioned safety plate is fixed, the impact generated by the blade hitting a foreign object is directly transmitted to the safety plate, causing the safety plate to be damaged

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