JP3060586U - Gardening shears - Google Patents

Abstract

(57) [Problem] To provide horticultural scissors having a long service life and low manufacturing cost. A first member and a second member are provided. The first member 10 includes a blade handle 12 having a first shearing blade portion 21, an intermediate step 23 and a first pivotal contact portion 25, and a handle 11. The first pivotal connection portion 25 is connected to the handle 11, and
3 is provided with a first transmission portion 27. The second member 30 includes a blade handle 35 having a second shearing blade portion 37, an intermediate step 39 and a second pivotal contact portion 38, a swingable arm 33, and a grip handle 31. The intermediate step 23 of the blade handle 12 is pivotally connected to the intermediate step 39, the second pivot contact portion 38 pivotally contacts the swinging hand 33, and the swinging hand 33 is the grip handle 31.
And a second transmission portion 36 is provided.
6, the second convex teeth 361, 362, 363 and the second tooth grooves 364, 365 are the first convex teeth 271, 2 of the first transmission portion 27.
By mating with the handle 72 and the first tooth spaces 273, 274, 275, the force applied to the grip handles 11, 31 can be smooth and small.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a horticultural tool, and more particularly to a horticultural shears that can be smoothly operated with a small force and is driven by a tooth profile.

[0002]

[Prior art]

 In conventional horticultural scissors, two blades intersect and pivot, and the pivot point is used as the pivot point. The dimensional ratio between the blade and the handle determines the applied state of the horticultural scissors. In other words, if the opening dimension between the blade tip ends is large and the handle is relatively short, a large force is required.On the other hand, if the object is to be sheared with a light force, the dimension of the handle is increased, but As a result, the dimension of the blade becomes short, and the blade tip cannot be widely opened. A horticultural scissor as shown in FIG. 1 includes a first sword 1, the first sword 1 having an integral structure and having a blade 101 and a handle 102, and a second sword 4 on the sword. Two pivot contacts 2, 3 for pivotally contacting the blade portion 401 and the handle portion 402 are provided. The blade portion 401 and the handle portion 402 are provided with fan-shaped tooth profiles 403 and 404 which can be engaged with each other at their relative ends, respectively, from the two pivot points 2 and 3 to the tooth ends of the two fan-shaped tooth shapes 403 and 404. The ratio of the distance is the minimum when the blade of the gardening shears is open, and then the depth of the blade into the shearing material is shallow, and the ratio when closed is the maximum. The depth at which the blade invades the shearing object is deep. In other words, the ratio of the distances is gradually increased by the depth of the blade portion invading the object to be sheared, that is, the resistance to shearing increases accordingly, and has a stronger shearing function and a labor-saving effect. Can be. However, two stoppers 103 and 104 are provided on the first sword 1 and the side edges of the blade 401 and the handle 402 must be stopped by two bolts. Thus, the fixed positions of the blade 401 and the handle 402 at the time of opening and closing are maintained, and the opening angle of the blade 401 and the handle 402 is prevented from being too large or too close. In other words, it is possible to prevent the movement width of the blade portion 401 and the handle portion 402 from being too large so that the two fan-shaped tooth shapes 403 and 404 cannot be fitted to each other. .

[0003]

[Problems to be solved by the invention]

 However, the structure in which the locking portions 103 and 104 are tightened with the above-described bolts requires a lot of material costs and manufacturing processes, and thus increases manufacturing costs. Accordingly, an object of the present invention is to provide garden shears having a long service life and low manufacturing costs.

[0004]

[Means for Solving the Problems]

 The horticultural scissors of the present invention for solving the above-mentioned problems are composed of a first member and a second member, the first member including a blade handle and a first grip handle, and the blade handle having a first shear blade. There is a middle part, an intermediate step and a first pivotal part, the pivotal part is connected to the first handle, and a first transmission part is provided on one side of the intermediate part, and the transmission part has a plurality of tooth spaces. And convex teeth are provided. The second member includes a blade handle, a swinging handle, and a second grip handle, and the blade handle has a second shearing blade portion, an intermediate stage, and a second pivotal contact portion, and the intermediate member has a blade handle of the first member. The middle stage is pivotally connected, the second pivoting portion is pivotally connected to the swinging hand, one end of the swinging hand is connected to the second handle, and the other end is provided with the second transmission portion. The transmission portion is provided with a plurality of second convex teeth and second tooth grooves, and the first and second grip handles are mutually engaged with the convex teeth and tooth grooves of the first transmission portion. The applied force is smooth and small.

[0005]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, as shown in FIG. 2, the gardening scissors of the present embodiment are generally composed of a first member 10 and a second member 30. The first member 10 includes a grip handle 11 and a blade handle 12, and the blade handle 12 includes a first shearing blade portion 21, an intermediate step 23, and a first pivotal contact portion 25 in that order. Reference numeral 25 is connected to the handle 11, and a first transmission portion 27 is provided below the intermediate step 23. The first transmission portion 27 has two convex teeth 271 and 272 and the two convex teeth. There are provided three first tooth grooves 273, 274, 275 formed between the teeth 271 and 272, and the convex teeth 271 and 272 have a tooth shape of a general positive gear.

The second member 30 includes a handle 31, a swinging hand 33, and a blade 35, and the blade 35 has a second shearing blade 37, an intermediate step 38, and a second pivotal contact 39, The intermediate stage 38 and the intermediate stage 23 of the first member 10 are pivotally connected by the member 40, so that the second shearing blade 37 and the shearing blade 21 of the first member 10 present corresponding scissors. . The lower end of the swinging arm 33 is connected to the handle 31, and the intermediate portion thereof is pivotally connected to the pivot contact portion 39 by the connection of another pivot contact member 41, and the second transmission portion 36 is provided at the upper end thereof. The second transmission portion 36 has three second convex teeth 361, 362, 363 and second tooth grooves 364, 365 located between the three convex teeth 361, 362, 363. The shapes of the inner concave arcs of the grooves 364 and 365 correspond to the shapes of the first convex teeth 271 and 272 of the first transmission portion 27, and the second convex teeth 361, 362 and 363 correspond to the first tooth grooves 273, 274 and 275. Corresponds to the shape of the inwardly concave arc, so that it can mesh with each other and the rotation is smooth.

As shown in FIG. 3, in the gardening scissors of the present embodiment in which the first and second members are opposed to each other by the above-described pivot members 40 and 41 and are pivotally connected, two grips are provided. When the handles 11 and 31 are in the spread state or in the closed state, the second transmission portion 36 of the swingable arm 33 and the first transmission portion 27 of the blade handle 12 have an effect of being fitted to each other and transmitted. FIG. 4 is a view showing a state where the first and second shearing blades 21 and 27 and the two grips 11 and 31 are spread. The convex teeth 361 are just fitted in the first tooth grooves 273 of the blade handle 12, and the first convex teeth 271 on the blade handle 12 enter and fit in the second tooth grooves 36 of the swinging arm 33. Also, in this case, the angle at which the two grips 11, 31 are widened is the largest, which is the most advantageous for applying force. As shown in FIG. 5, the two grips 11, 31 are successively opposed to each other and closed inward, and the first and second shearing blades 21, 37 are extended by about 35 degrees. 33 is fitted into the first tooth groove 274 of the blade handle 12, and the first convex tooth 272 of the first blade handle 12 is fitted into the second tooth groove 365 of the swinging arm 33, as shown in FIG. When the two grip handles 11 and 31 are in the most closed state, the second convex tooth 363 of the swinging hand 33 is fitted into the first blade groove 275 of the blade handle 12 as shown in FIG. The second convex teeth 361, 362 are separated from the two first tooth spaces 273, 274.

The horticultural scissors of the present embodiment are improved according to the actual use condition. When the horticultural scissors of the present embodiment are in a state of being spread and performing shearing, the user can grasp the handle. The force applied to 11, 31 increases relatively as the angle of the two grips 11, 31 decreases. This is in response to the two grip handles 11, 31 being spread to the maximum angle when starting to shear the object, and the first and second shear blade portions of the two knife handles 12, 35. 21 and 37 are also maximized and require only a small shearing force, but if the first and second shearing blades 21 and 37 are cut sequentially to the center, a larger shearing force is required. Thus, the horticultural scissors of this embodiment can provide a greater shearing force, and can provide a relative shearing force according to the change of the shearing condition, so that the user can grip the handles 11 and 31 to shear the object. In this case, the operation of expanding or closing the grip handles 11, 31 conforms to the principle of ergonomics, and can be operated with a smooth and small force.

Further, when the two grip handles 11, 31 of the gardening scissors of the present embodiment are expanded, and the first and second shearing blades 21, 37 are maximized, the swing of the second member 30 is performed. The outer side 366 of the arm 33 contacts the flat side 276 at the upper end of the first transmission portion 27 of the first member 10, and the two grip handles 11, 31 close to close the first and second shear blade portions 21, 37. Is in the closed state, the inner side 367 of the swinging hand 33 contacts the flat side 277 of the lower end of the first transmission portion 27 of the handle 12 of the first member 10, and the swinging hand 33 and the first blade handle The first and second transmission portions 27, 36 of the 35 are engaged with each other and start moving, so that the gardening scissors are not damaged too quickly due to excessive expansion or closing, and the stopper portion is tightened by a bolt. This eliminates the need for material and manufacturing processes, and significantly reduces manufacturing costs.

As can be seen from the above embodiment, the gardening scissors of the present invention make the two transmission parts mesh with each other, so that the angle of expansion between the two handles changes from large to small. Accordingly, the effective shearing force that is generated increases gradually, and the shearing force is smooth and has a labor-saving effect, and the service life can be extended to reduce the manufacturing cost.

[Brief description of the drawings]

FIG. 1 is a front view showing a conventional gardening shears.

FIG. 2 is an exploded perspective view showing the gardening scissors according to the embodiment of the present invention.

FIG. 3 is a front view showing the gardening scissors according to the embodiment of the present invention.

FIG. 4 is a view showing a first use state of the gardening scissors according to the embodiment of the present invention;

FIG. 5 is a view showing a second use state of the gardening scissors according to the embodiment of the present invention;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 1st member 11 Handle 12 Blade 21 First shearing blade 23 Intermediate stage 25 First pivotal joint 27 First transmission part 30 Second member 31 Handle 33 33 Swivel 35 Blade handle 36 Second transmission part 37 2nd shear blade part 38 2nd pivot contact part 39 Intermediate step 271, 272 First convex tooth 273, 274, 275 First tooth groove 361, 362, 363 Second convex tooth 364, 365 Second tooth groove

Claims (3)

[Utility model registration claims] 1. A blade handle and a first grip handle, the blade handle having a first shearing blade portion, an intermediate stage, and a first pivotal contact portion in order,
The first pivot portion is connected to the first handle, and a first transmission portion is provided on one side of the intermediate step. The first transmission portion includes a plurality of first tooth spaces and a plurality of first teeth. The first located between the grooves
A first member having convex teeth, a second handle, a swinging handle, and a blade handle, the blade handle of which is the second member;
A shearing portion, an intermediate stage, and a second pivot portion, wherein the intermediate stage is pivotally connected to an intermediate stage of the blade handle of the first member, and the second pivot portion is pivotally connected to the swinging arm. One end of the swinging arm is connected to the second handle, and the other end is provided with a second transmission portion facing the first transmission portion, and the second transmission portion is provided with a plurality of second convex teeth and the second transmission portion. A second tooth space located between the plurality of second convex teeth, wherein the second convex teeth can be respectively fitted into the first tooth grooves, and the second tooth grooves are respectively formed by the second tooth grooves. 1. A gardening scissors comprising: a second member provided for fitting of one convex tooth. 2. The gardening scissors according to claim 1, wherein the first convex teeth and the second convex teeth have the same shape as the tooth shape of the positive gear. 3. An upper and lower end of the first transmission portion are both flat sides, and two sides of the second transmission portion correspond to the shape of the flat side. The gardening shears according to claim 1.