TWM560763U - Lawnmower - Google Patents

Abstract

The present invention provides a weeding knife which is integrally formed of a plastic material, and mainly comprises: a body having a mounting hole for connecting an external driving device; and at least two blades respectively Extending outwardly from the two ends of the body, each of the blades includes: a blade extending toward the body to a neck portion coupled to the body; and a three-blade edge continuously formed on the periphery of the blade body, and A shoulder is formed at the junction of the blade and the neck.

Description

Weeding knife

This creation relates to a weeding knife, and in particular to an innovative structural type revealer for a weeding knife applied to a lawn mower.

According to the conventional handheld lawn mower, a long rod has a long end for the user to hold; a motor is disposed at the front end of the long rod; and a metal cutter is screwed on the front end of the long rod. And the metal cutter is driven by the motor to cut off the weeds on the ground.

However, the conventional hand-held mower structure type has found that the following problems still exist in the actual use experience: the conventional hand-held mower is subjected to weeding, due to the high-speed rotation of the metal cutter. If you accidentally collide with a stone or other hard object, it will easily deform and damage the metal tool, and it will cause the metal tool to break and fly out, and there will be damage to the person or damage to the property.

Therefore, in view of the problems existing in the above-mentioned conventional hand-held mower structure, how to develop an innovative structure that is more ideal and practical, is expected by the users, and is also related to the industry's efforts to develop breakthrough goals and directions.

In view of this, the creator has been engaged in the manufacturing development and design experience of related products for many years. After the detailed design and careful evaluation of the above objectives, the creator will have a practical and practical creation.

The main purpose of this creation is to provide a weeding knife, and the technical problem to be solved is to make an innovative breakthrough in how to develop a new type of herbicide structure that is more ideal and practical.

The technical feature of the present invention is mainly that the weeding blade is made of a plastic material integrally formed, comprising: a body having a mounting hole for connecting an external driving device; and at least two The blade extends outwardly from the opposite ends of the body, and each of the blades comprises: a blade body connected to the body; and a first blade edge formed on two opposite side edges of the blade body; The two cutting edges are formed on the blade body and adjacent to the edge of the first cutting edge, so that the first and second cutting edges are continuously formed on the periphery of the blade body.

With this innovative and unique design, this creation can achieve the following effects in comparison with the prior art: 1. Since the creation of the weeding blade is made of a plastic material, the driving device drives the creation and is rotated at a high speed. If the blade or the other hard object is inadvertently hit, the blade made of plastic has the characteristics of flexibility, so that the blade is not easily deformed, damaged or broken due to the collision, thereby improving the safety of the operation. 2. The first cutting edges are respectively located on opposite sides of the blade body. When one of the cutting edges is worn, the other side of the blade can be turned over to achieve full utilization without waste. 3. The blade of the creation is provided with a venting hole which has the effect of guiding the airflow through the blade to avoid the problem that the blade is deflected at a predetermined position due to wind resistance and wind pressure at high speed. Therefore, it has special practical progress and better industrial utilization benefits.

Please refer to Figures 1, 2 and 3 for a preferred embodiment of the present invention. However, these embodiments are for illustrative purposes only and are not limited by this structure. The weeding blade A is integrally formed by a plastic material, and the weeding blade A includes a body 10 and at least two blades 20, wherein the body 10 has a mounting hole 11 for mounting an external driving device 30; At least two blades 20 extend outwardly from opposite ends of the body 10, respectively. In this example, the drive unit 30 is further connected to a link 31 for the user to hold, and the drive unit 30 drives the body 10 and the blade 20 to rotate, thereby cutting the weed on the ground with the blade 20.

As shown in Figures 2, 3, and 5, each of the blades 20 includes a blade body 21, two first blade edges 22, and a second blade edge 28, and is designed to be tapered from the inside to the outside, wherein the blade body 21 is The first cutting edges 22 are respectively formed on the opposite side edges of the blade body 21, and each of the first cutting edges 22 has an inclination angle θ between the extending lines of the outer periphery of the body 10. The tilt angle θ is between 15 and 20 degrees. In particular, the preferred tilt angle θ is 17.5 degrees, which is less laborious for the user, facilitates operation, and achieves a better cutting effect for the first blade 22. Further, the second cutting edge 28 is formed on the blade body 21 and adjacent to the edge of the first blade 22, so that the first and second cutting edges 22 and 28 are continuously formed on the periphery of the blade body 21. Moreover, since the first cutting edges 22 are respectively located on opposite sides of the blade body 21, when the first blade edge 22 on one side is worn, the first blade edge 22 on the other side can be turned over to achieve full utilization without waste. The role. In this example, the blade body 21 further has a neck portion 23 extending toward the body 10 and coupled to the body 10. A shoulder portion 24 is formed at the junction of the first blade 22 and the neck portion 23. Further, each of the first and second cutting edges 22, 28 is a double-edged tool tip type.

As shown in Figures 3 and 4, in this example, each of the blades 20 is provided with at least one air hole 25 for guiding the airflow through the blade 20 to prevent the blade 20 from wind and wind during high speed rotation. The pressure causes a problem of its predetermined positional bias.

As shown in the second, third, and fourth embodiments, in the present embodiment, each of the blades 20 is provided with a plurality of recesses 26 at the periphery of the air hole 25, so that a plurality of connecting ribs 27 are formed on the blade 20, thereby improving the structural strength of the blade 20. And it is not easy to break and deform.

Efficacy Description: The "weeding knife" disclosed in this work mainly uses the innovative unique structural patterns and technical features of the body, the blade, etc., so that the author can achieve the following in comparison with the conventional structure proposed in [Prior Art]. Efficacy: 1. Because the creation of the weeding blade is made of plastic material, the driving device drives the creation and is made of plastic when it accidentally hits a stone or other hard object under high-speed rotation. The blade has the characteristics of flexibility, so it is not easy to cause deformation, damage or breakage of the blade due to collision, thereby improving the safety of the operation. 2. The first cutting edges are respectively located on opposite sides of the blade body. When the first blade edge on one side is worn, the first blade edge on the other side can be turned over to achieve full utilization without waste. 3. The blade of the creation is provided with a venting hole which has the effect of guiding the airflow through the blade to avoid the problem that the blade is deflected at a predetermined position due to wind resistance and wind pressure at high speed. 4. The inclination angle of the first blade corresponding to the extension line of the outer circumference of the body is 17.5 degrees, which is more labor-saving for the user, facilitates the operation, and achieves the better cutting effect of the first blade. Therefore, it is particularly practical and progressive.

A‧‧‧Weeding knife

10‧‧‧ Ontology

11‧‧‧Installation holes

20‧‧‧blade

21‧‧‧Tools

22‧‧‧ first blade

23‧‧‧ neck

24‧‧‧ shoulder

25‧‧‧ stomata

26‧‧‧ recess

27‧‧‧ Connecting ribs

28‧‧‧second blade

30‧‧‧ drive

31‧‧‧ Connecting rod

Θ‧‧‧ tilt angle

Figure 1 is a perspective view of a preferred embodiment of the present herbicidal blade. Figure 2 is a perspective view of Figure 1 showing the body connected to the drive and the connecting rod. Figure 3 is a cross-sectional view of Figure 1. Fig. 4 is a partially enlarged view of Fig. 3 showing the positional relationship of the air holes, the recesses, and the connecting ribs. Fig. 5 is a partially enlarged view of Fig. 3 showing a second blade edge having a double edge.

Claims (8)

The utility model relates to a weeding knife which is formed by integrally forming a plastic material, comprising: a body having a mounting hole for connecting an external driving device; and at least two blades respectively from the two sides of the body Externally extending, each of the blade sets includes: a blade body coupled to the body; two first blade edges respectively formed on opposite side edges of the blade body; and a second blade edge formed on the blade body and the blade The adjacent edges of the first cutting edge enable the first and second cutting edges to be continuously formed on the circumference of the blade. The herbicidal blade according to claim 1, wherein the blade body has a neck portion extending toward the body and coupled to the body, and a shoulder portion is formed at the joint between the first blade and the neck portion. The herbicidal knife according to claim 2, wherein each of the first and second cutting edges is a double-edged tool tip type. The herbicidal blade of claim 2, wherein each of the blades is provided with at least one air hole for guiding the airflow. The herbicidal blade of claim 3, wherein each of the blades is provided with at least one air hole for guiding the airflow. The herbicidal blade of claim 1, wherein the blade has a structure that tapers from the inside to the outside, and each of the first blades has an extension line with respect to the outer periphery of the body. There is an oblique angle between 15 and 20 degrees. The herbicidal blade according to claim 6, wherein the inclination angle is 17.5 degrees. The herbicidal blade of claim 7, wherein each of the blades is provided with a plurality of recesses such that a plurality of connecting ribs are formed on the blade.