WO2016191898A1

WO2016191898A1 - Gardening shear with improved structural strength

Info

Publication number: WO2016191898A1
Application number: PCT/CN2015/000375
Authority: WO
Inventors: 林有堂
Original assignee: 林有堂
Priority date: 2015-06-01
Filing date: 2015-06-01
Publication date: 2016-12-08

Abstract

A gardening shear 10 comprises a handle 20, a first shear blade 30, a second shear blade 40 and a control unit 50. The first shear blade 30 is pivoted at a top end of the handle 20, and the second shear blade 40 is pivoted to the first shear blade 30 and comprises a second blade portion 41 and a second handle 42, wherein the second handle 42 is connected to a bottom end of the second blade portion 41 and comprises a pressing face 43 and a gear rack 44 opposite to the pressing face 43. The control unit 50 comprises a gear 52 and an pushing member 54, wherein the gear 52 is provided at the handle 20 and engages with the gear rack 44 of the second handle 42 of the second shear blade 40, and the pushing member 54 presses against the pressing face 43 of the second handle 42 of the second shear blade 40. The gardening shear 10 increases operating smoothness of a shearing process of the first shear blade and the second shear blade by the combination of the gear 52 and the gear rack 44 and a pushing force of the pushing member 54 to the second shear blade 40, and improves structural strength.

Description

Gardening shears that increase structural strength

Technical field

The present invention relates to garden shears, and more particularly to a garden shear that enhances structural strength.

current technology

As far as the conventional techniques of gardening shears are concerned, in order to make the operation of the user more labor-saving, the applicant applied for the Taiwanese Patent No. M291207, which was previously applied, mainly by inserting the movable shaft into the card socket at different positions. The force support point allows the user to use the segmental force to achieve a labor-saving effect during the cutting process.

However, in the aforementioned conventional patent case, in addition to the smoothness of the operation, the movable shaft will continuously wear with each of the pockets during the process of changing the force fulcrum, so that it is bound to be used under long-term use. Will cause structural damage, which in turn affects the service life of garden shears.

Summary of the invention

The main object of the present invention is to provide a gardening shear which has good operational smoothness while at the same time improving structural strength.

In order to achieve the above object, a horticultural shear capable of improving structural strength is characterized by comprising: a shank; a first cutting edge having a first blade portion and a first shank portion, a bottom end of the first blade portion is pivotally disposed at a top end of the shank, a top end of the first shank portion is coupled to a bottom end of the first blade portion, and a second cutting edge is pivotally disposed at the first end a first handle portion of the cutting edge and having a second blade portion and a second handle portion, the second handle portion being coupled to the bottom end of the second blade portion and having an abutting surface and a a tooth groove of the abutting surface; a control unit having a gear and a ejector member, the gear rotatably disposed on the shank and engaging with the slot of the second shank of the second cutting edge The ejector member abuts against the receiving surface of the second shank of the second cutting edge.

In the above technical solution of the present invention, the shank has a cover plate opposite to the body, and each of the cover plates has a fixed end and a cantilever end, and each of the cover plates is fixed to the The top end of the shank body is rotatably disposed between the intermediate positions of the two cover plates, and the ejector member is a shaft pin and is disposed between the cantilever ends of the two cover plates.

The shank has two opposite tapered portions on one side of the second cutting edge, the gear is rotatably disposed between the two tapered portions, and the ejector member is a shaft pin and is provided At a tip of the two tapered portions between.

The second cutting edge has a blocking protrusion disposed at a bottom end of the second handle and adjacent to the receiving surface for blocking the ejector.

The gear is rotatably disposed in a top end of the shank, the ejector member is a spring and is disposed in the first shank of the first cutting edge, and one end of the spring is fixed to the first a first handle of the cutting edge, the other end of the spring abutting a receiving surface of the second handle of the second cutting edge.

Advantages of the Invention: As can be seen from the above, when the force is applied to pull the shank away from the first cutting edge, the gear will roll from the top end of the gullet toward the bottom end of the gullet, and the ejector will push the second shear The abutting surface of the second shank of the blade forces the second cutting edge to expand relative to the first cutting edge. Conversely, when the force is applied to push the shank toward the first cutting edge, the gear will be from the bottom of the tooth groove The end rolls toward the top end of the tooth groove, and simultaneously applies a thrust to the second cutting edge during the rolling process, so that the second cutting edge is engaged with the first cutting edge. Thus, the gardening shear of the present invention can achieve the purpose of increasing the smoothness of the movement and enhancing the structural strength.

The invention is suitable for the daily operation of the landscaping industry. Because it can increase the smoothness of the movement and enhance the structural strength, the shearing efficiency can be improved at the same time, which is a good tool for the landscaping practitioner to improve work efficiency and reduce labor intensity.

DRAWINGS

Figure 1 is a plan view showing a first embodiment of the present invention;

Figure 2 is similar to Figure 1, mainly showing the state of maximum opening angle between the first and second cutting edges.

Figure 3 is a plan view showing a second embodiment of the present invention;

Figure 4 is a partial cross-sectional view showing a third embodiment of the present invention

Best mode for carrying out the invention

As shown in FIG. 1, the garden shear 10 of the first embodiment of the present invention includes a shank 20, a first cutting edge 30, a second cutting edge 40, and a control unit 50.

In the present embodiment, the shank 20 has a shank body 22 and two opposite cover plates 24. The bottom end of the shank body 22 is fixed to the top end of a handle 12, and each cover plate 24 has a fixed end 26 and a cantilever end. 28, each cover plate 24 is locked to the top end of the shank body 22 by a fixed end 26.

The first cutting edge 30 has a first blade portion 32 and a first shank portion 34. The bottom end of the first blade portion 32 is pivotally disposed at the top end of the shank 20, and the top end of the first shank portion 34 is bent and extended. Connected to the first blade portion 32 The bottom end of the first handle portion 34 is fixed to the other handle 14.

The second cutting edge 40 is pivotally disposed on the first handle portion 34 of the first cutting edge 30 and has a second blade portion 41 and a second handle portion 42. The second handle portion 34 is coupled to the bottom end of the second blade portion 41. It has a receiving surface 43 and a tooth groove 44 with respect to the receiving surface 43. Further, the second cutting edge 40 has a stopper convex portion 45 provided at the bottom end of the second shank portion 42 and adjacent to the receiving surface 43.

The control unit 50 has a gear 52 and an ejector 54. The gear 52 is disposed at an intermediate position of the two cover plates 24 of the shank 20 and is engaged with the gullet 44 of the second shank portion 42 of the second cutting edge 40. The ejector member 54 is a pivot pin in this embodiment. The member 54 is disposed on the cantilever end 28 of the cover 24 of the shank 20 and abuts against the receiving surface 43 of the second shank 42 of the second cutting edge 40.

It can be seen from the above structure that when the two

grips

12, 14 are pulled outward by the force, as shown in FIG. 2, the handle 20 drives the gear 52 along the second handle 42 of the second cutting edge 40 through the cover plate 24. The tooth groove 44 is rolled downward, and the shank 20 drives the ejector member 54 to slide down along the receiving surface 43 of the second shank portion 42 of the second cutting edge 40 through the cover plate 24, and the ejector member 54 is in the sliding process. The second shank portion 42 of the second cutting edge 40 is biased to pivot the second blade portion 41 of the second cutting edge 40 away from the first blade portion 32 of the first cutting edge 30. The first blade portion 32 of a cutting edge 30 gradually assumes an open state until the ejector member 54 touches the blocking projection 45 of the second cutting edge 40, and the first blade portion 32 of the first cutting edge 30 A maximum opening angle is formed between the second blade portion 41 of the second cutting edge 40.

When the force is applied to push the two

grips

12, 14 inward, the shank 20 will drive the gear 52 to roll up along the slot 44 of the second handle 42 of the second cutting edge 40 through the cover plate 24, while the shank The cover member 24 drives the ejector member 54 to slide upward along the receiving surface 43 of the second shank portion 42 of the second cutting edge 40, and pushes the groove wall of the gullet 44 during the rolling of the gear 52. The second blade portion 41 of the second cutting edge 40 is pivoted toward the first blade portion 32 of the first cutting edge 30 until the gear 52 rolls to the top end of the slot 44, as shown in FIG. The first blade portion 32 of the blade 30 and the second blade portion 41 of the second cutting edge 40 are brought into abutment with each other.

It should be additionally noted that the present invention may have different structural changes. As shown in FIG. 3, the shank 60 protrudes toward the second cutting edge 40 in an integrally formed manner in the second embodiment. Two opposite tapered portions 62, the gear 52 is rotatably disposed between the two tapered portions 62, and the ejector member 54 is disposed at the tip end 64 of the second tapered portion 62, so that the structure can be simplified as compared with the foregoing embodiment. .

On the other hand, the control unit 50 can also be applied to different kinds of garden shears 70 (such as the flower scissors shown in FIG. 4). In the third embodiment, the gear 52 is disposed in the top end of the shank 72, and the ejector member 54 is provided. The shaft pin is replaced by a spring and disposed in the first shank portion 84 of the first cutting edge 80, and one end of the ejector member 54 is fixed to The first shank portion 84 of the first cutting edge 80, the other end of the ejector member 54 abuts against the receiving surface 96 of the second shank portion 94 of the second cutting edge 90 for the second pair of the second cutting edge 90 The shank portion 94 is urged to maintain the unfolded state between the first blade portion 82 of the first cutting edge 80 and the second blade portion 92 of the second cutting edge 90. Thus, the user needs to overcome the elastic force of the ejector member 54 (ie, the spring) to abut the first blade portion 82 of the first cutting edge 80 and the second blade portion 92 of the second cutting edge 90.

In summary, the gardening shear 10 of the present invention can increase the first and second cutting edges by rolling the gear 52 in the tooth groove 44 and the thrust applied by the ejector member 54 to the

second cutting edges

40, 90. The smoothness of the process, and can reduce the structural wear, thereby achieving the purpose of improving the structural strength.

Industrial applicability

The horticultural shear provided by the invention can reduce the structural wear, improve the structural strength, and increase the smoothness of the cutting edge during the opening and closing process, so the operation is also obviously labor-saving, and the working efficiency is also It can be obviously upgraded to meet the needs of the landscaping industry, so it has industrial applicability.

Claims

A gardening shear capable of improving structural strength, characterized by comprising:

a handle

a first cutting edge having a first blade portion and a first shank portion, a bottom end of the first blade portion being pivoted at a top end of the shank, and a top end of the first shank portion is coupled to the The bottom end of the first blade;

a second cutting edge pivotally disposed on the first handle of the first cutting edge and having a second blade portion and a second handle portion, the second handle portion being coupled to the bottom of the second blade portion And having a receiving surface and a tooth groove opposite to the receiving surface;

a control unit having a gear and a ejector member, the gear being rotatably disposed on the shank and engaging a tooth groove of the second shank of the second cutting edge, the ejector member a receiving surface of the second handle attached to the second cutting edge.
The horticultural shear capable of lifting structural strength according to claim 1, wherein the shank has a body and two opposite cover plates, each of the cover plates having a fixed end and a cantilever end, each of the The cover plate is fixed to the top end of the shank body through the fixed end, the gear is rotatably disposed between the intermediate positions of the two cover plates, the ejector member is a shaft pin and is disposed on the Between the cantilever ends of the two cover plates.
The horticultural shear capable of lifting structural strength according to claim 1, wherein said shank has two opposite tapered portions toward a side of said second cutting edge, said gear being rotatably disposed at said Between the two tapered portions, the ejector member is a pivot pin and is disposed between a tip end of the two tapered portions.
The garden shear according to claim 1, wherein the second cutting edge has a blocking protrusion, and the stopping protrusion is disposed at a bottom end of the second handle and adjacent to The abutting surface is for blocking the ejector member.
The horticultural shear capable of lifting structural strength according to claim 1, wherein the gear is rotatably disposed in a top end of the shank, and the ejector member is a spring and is disposed on the first In the first shank of the cutting edge, one end of the spring is fixed to the first shank of the first cutting edge, and the other end of the spring abuts against the second shank of the second cutting edge surface.