TWI775472B - Garden shears with labor-saving structure - Google Patents

Abstract

A kind of gardening scissors with a labor-saving structure, comprising a handle, a first handle, a first cutting edge, a second handle and a second cutting edge, the handle has an elongated groove, and the first handle is connected to the bottom end of the handle, The first cutting blade has a first blade portion and a first handle portion, the bottom end of the first blade portion is connected to the top end of the first handle portion, the first handle portion has a shaft assembly, and the shaft assembly is located in the elongated groove of the handle; the second The handle is connected to the bottom end of the first handle, the second cutting blade has a second blade and a second handle, the bottom end of the second blade is connected to the top of the second handle, and the second handle is pivoted by a first pivot element The first handle is connected to the second handle, and the second handle is pivotally connected to the handle by a second pivot element, wherein when the first handle and the second handle are unfolded or folded, the shaft assembly moves along the elongated groove of the handle, thereby This changes the torque applied by the grip to achieve the purpose of saving effort.

Description

Garden shears with labor-saving structure

The present invention relates to gardening shears, in particular to a gardening shears with a labor-saving structure.

The structure of general garden shears mainly includes a first cutting edge and a second cutting edge, and the first and second cutting edges are pivotally connected to each other, and the bottom ends of the first and second cutting edges are respectively connected with a grip Handles, the user can achieve the purpose of trimming branches and leaves by the first and second cutting edges by holding the two handles and applying force to them, so that the two handles are close to or away from each other.

However, when using garden shears to prune branches and leaves, it is often necessary to repeatedly open and close the two handles, and when the two scissors cut branches with larger diameters, it is often necessary to repeatedly operate the handles for many times to complete the pruning, resulting in It is quite laborious and time-consuming for the user to operate the conventional garden shears.

Therefore, the applicant believes that if a garden shears capable of achieving labor-saving effect can be provided, the user can be more labor-saving during operation, and it is convenient to use.

The main purpose of the present invention is to provide a garden shears with a labor-saving structure. Compared with the prior art, the torque applied by the handle can be changed during operation, so that the user is more labor-saving and convenient in use.

In order to achieve the above-mentioned purpose, the present invention provides a garden scissors with a labor-saving structure, which comprises: a handle with an elongated slot near the top; a first handle connected to the bottom end of the handle; a first handle A scissor blade has a first blade portion and a first handle portion, the bottom end of the first blade portion is connected to the top end of the first handle portion, the first handle portion is provided with a shaft assembly near the top end, and the shaft assembly is connected to the top end of the first handle portion. is located in the elongated groove of the handle; a second handle is connected to the bottom end of the first handle; and a second cutting edge has a second blade and a second handle, the second The bottom end of the blade portion extends the second handle portion, the second handle portion is pivotally connected to the first handle portion near the top end by a first pivot element, and the second handle portion is near the bottom end to A second pivot element pivotally connects the handle; wherein, when the first handle and the second handle are unfolded or folded, the shaft assembly moves along the elongated groove of the handle, and the first cutting edge And the second shearing edge expands or collapses accordingly.

Therefore, the present invention provides a garden scissors with a labor-saving structure. With the technical feature that the shaft assembly moves along the elongated groove of the handle, the torque applied by the handle can be changed during operation, so that the user can save more labor. Has the convenience of use.

10: Garden shears with labor-saving structure

20: handle

21: Long slot

30: First Grip

40: The first cutting edge

41: The first blade

43: The first handle

45: Shaft Assembly

451: Screw parts

453: Rings

50: Second Grip

60: Second cutting edge

61: Second blade

63: Second handle

65: The first pivot element

67: Second pivot element

L: virtual straight line

10': Garden shears with labor-saving structure

20': handle

21': long slot

43': first handle

431': perforated

45': Shaft Assembly

451': latch

453’: Bearing

455’: Slider

FIG. 1 is a perspective view of a first preferred embodiment of the present invention.

FIG. 2 is an exploded view of the first preferred embodiment of the present invention.

FIG. 3 is a front view of the first preferred embodiment of the present invention.

FIG. 4 shows the use state of the first preferred embodiment of the present invention with reference to FIG. 1 .

FIG. 5 is the use state of the first preferred embodiment of the present invention, referring to FIG. 2 .

FIG. 6 is an exploded view of the second preferred embodiment of the present invention.

In order to describe the technical features of the present invention in detail, the following preferred embodiments are described below in conjunction with the drawings. The scissors 10 include a handle 20 , a first handle 30 , a first cutting edge 40 , a second handle 50 and a second cutting edge 60 .

As shown in Figures 1-2, an elongated groove 21 is defined near the top of the handle 20.

The first handle 30 is connected to the bottom end of the handle 20 for the user to hold and apply force.

The first cutting edge 40 has a first blade portion 41 and a first handle portion 43 . The bottom end of the first blade portion 41 is connected to the top end of the first handle portion 43 , and the first handle portion 43 is provided with a The shaft assembly 45 is located in the elongated groove 21 of the tool handle 20; in this preferred embodiment, the shaft assembly 45 is composed of a screw member 451 and a ring member 453. The member 451 is a screw rod, and the annular member 453 is made of wear-resistant materials such as metal or ceramics. position, the ring member 453 is integrated with the first handle portion 43, and the ring member 453 is rotatable relative to the screw member 451, and the diameter of the ring member 453 is slightly smaller than the width of the elongated groove 21. It can be accommodated in the elongated slot 21 .

In other possible embodiments, the shaft assembly 45 can also be integrally formed at the position of the first handle portion 43 near the top end.

The second handle 50 is connected to the bottom end of the first handle 43 for the user to hold and apply force.

The second cutting edge 60 has a second blade portion 61 and a second handle portion 63 , the bottom end of the second blade portion 61 extends from the second handle portion 63 , and the second handle portion 63 has a first handle portion near the top end. A pivot element 65 The second handle 63 is pivotally connected to the handle 20 by a second pivot element 67 near the bottom end of the first handle 43 .

3-5, when the first handle 30 and the second handle 50 are unfolded or folded, the shaft assembly 45 can move along the elongated slot 21, and the first cutting edge 40 and the second shearing edge 60 expands or folds accordingly. When the distance between the shaft assembly 45 and the second pivot element 67 is larger, it means that the distance between the second pivot element 67 and the shaft assembly 45 is larger. The longer the actuating arm is, that is, the greater the actuating torque obtained, and the user can operate the first handle 30 and the second handle 50 under the condition of maintaining a larger torque, of course, the labor-saving effect can be achieved; In this preferred embodiment, as shown in FIGS. 3-5 , a virtual straight line L is defined to form a connection between the axis of the first pivot element 65 and the axis of the second pivot element 67 . When the first handle When the first handle 30 and the second handle 50 are in a folded state, the shaft assembly 45 is located on the side of the virtual straight line L, which is defined as the outer side here. In the unfolded state, the shaft assembly 45 moves along the elongated slot 21 of the tool handle 20 in a direction close to the second pivot element 67 , and the shaft assembly 45 moves from the outside of the virtual straight line L to the virtual straight line L The other side moves, which is defined as the inner side here. When the axis of the shaft assembly 45 moves to the side of the virtual straight line L, the shaft assembly 45 moves along the elongated groove 21 of the shank 20 and moves away from it. The direction of the second pivot element 67 moves.

It can be seen from the foregoing structure that when the garden shears 10 of the present invention are not in use, the shaft assembly 45 is located at the uppermost end of the elongated slot 21. As shown in FIG. When the second handle 50 is forced to expand outward, the shaft assembly 45 will move along the elongated slot 21 of the knife handle 20 toward the direction close to the second pivot element 67 , and when the axis of the shaft assembly 45 When moving to the virtual straight line L, as shown in FIG. 4 , the shaft assembly 45 is located at the lowermost end of the elongated slot 21 ; as shown in FIG. 5 , when the first and second grips 30 and 50 are When the force continues to expand, the axis of the shaft assembly 45 will move to the inner side of the virtual straight line L, and at the same time, the shaft assembly 45 will continue to move away from the second pivot element along the elongated slot 21 of the handle 20 67, until the first blade 41 and the second blade 61 are unfolded to the maximum state, the distance between the shaft assembly 45 and the second pivot element 67 is the largest, that is, the lever arm is the longest, when shearing The torque obtained is also larger.

When cutting branches with larger diameters, as shown in FIG. 5 , since the distance between the shaft assembly 45 and the second pivot element 67 is the largest, that is, the moment arm is the longest, the moment is the largest, so the user Branches with larger diameters can be cut with less force, thereby achieving a labor-saving effect. When cutting branches, the user applies force to the first handle 30 and the second handle 50 to fold inwards 5 to 3 , the shaft assembly 45 will first move along the elongated slot 21 of the handle 20 toward the direction close to the second pivot element 67 , and then move away from the second pivot element 67 Move, and then drive the first blade portion 41 and the second blade portion 61 to be completely retracted to complete the purpose of pruning branches.

Accordingly, the present invention provides a garden scissors with a labor-saving structure. With the technical feature that the shaft assembly 45 moves along the elongated groove 21 of the handle 20, the torque applied by the handle can be changed during operation to make the user More labor-saving and convenient to use.

As shown in Fig. 6 again, it is the garden shears 10' with the labor-saving structure of the second preferred embodiment of the present invention, and its main structure is generally the same as that of the first preferred embodiment, except that:

The shaft assembly 45' is composed of a pin 451', a bearing 453' and a slider 455'. The pin 451' is threaded through the bearing 453' and the slider 455', and then fixed in a tight fit. A through hole 431 ′ of the first handle portion 43 ′ near the top, the outer diameter of the bearing 453 ′ is slightly smaller than the width of the elongated groove 21 ′ and can be accommodated in the elongated groove 21 ′, thereby The effect of moving the shaft assembly 45' along the elongated groove 21' of the tool handle 20' can also be achieved. Therefore, the implementation of the shaft assembly 45 is not only limited to the preferred embodiment proposed in this case, but also by the The arrangement of the bearing 453' can also effectively reduce the wear when moving along the elongated groove 21' and make the shearing action smoother.

From this, it can be seen that the second preferred implementation of the present invention not only achieves the effect of moving the shaft assembly along the elongated slot of the handle, but also achieves the change of the torque applied by the grip during operation, which saves the user's effort. In addition, wear can be reduced to prolong the service life of the present invention, and the shearing action is smoother.

10: Garden shears with labor-saving structure

20: handle

21: Long slot

30: First Grip

40: The first cutting edge

41: The first blade

43: The first handle

45: Shaft Assembly

451: Screw parts

453: Rings

50: Second Grip

60: Second cutting edge

61: Second blade

63: Second handle

65: The first pivot element

67: Second pivot element

L: virtual straight line

Claims (3)

A garden scissors with a labor-saving structure, comprising: a handle with an elongated slot near the top; a first handle connected to the bottom end of the handle; a first cutting edge with a first blade portion and a first handle portion, the bottom end of the first blade portion is connected to the top end of the first handle portion, the first handle portion is provided with a shaft assembly near the top end, and the shaft assembly is located in the elongated groove of the handle; a second handle connected to the bottom end of the first handle; and a second cutting blade having a second blade and a second handle, the bottom end of the second blade extending from the second handle The second handle is pivotally connected to the first handle near the top with a first pivot element near the top, and the second handle is pivoted to the knife near the bottom with a second pivot element handle; wherein, when the first handle and the second handle are unfolded or folded, the shaft assembly is moved along the elongated groove of the handle, and the first and second shearing edges are unfolded or Folded, it is defined that the axis of the first pivot element and the axis of the second pivot element are connected to form a virtual straight line. When the first handle and the second handle are in a folded state, the shaft assembly is located at the One side of the virtual straight line, and when the first handle and the second handle are in the unfolded state, the shaft assembly moves along the elongated slot of the handle toward the direction of approaching the second pivot element, and the The shaft assembly moves from one side of the virtual straight line to the other side of the virtual straight line. The garden shears with a labor-saving structure as claimed in claim 1, wherein: the shaft assembly is composed of a screw element and an annular element, and the screw element passes through the annular element and is screwed to the first handle The ring member is rotatable relative to the screwing member, and the diameter of the ring member is slightly smaller than the width of the elongated groove and can be accommodated in the elongated groove. The garden scissors with a labor-saving structure as described in claim 1, wherein: the shaft assembly is composed of a pin, a bearing and a slide, the pin is threaded through the bearing and the slide, and then a tight fitting The outer diameter of the bearing is slightly smaller than the width of the elongated groove and can be accommodated in the elongated groove.

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