TWI555466B - Can reduce the grip of the cut of the tree cut - Google Patents

Description

Tree shear that reduces grip opening

The invention relates to the structure of scissors, in particular to a tree shear for cutting plant branches.

Press, the tree shear is used to cut the branches of the plant. Because it requires a large force to operate, the tree shear has a longer grip as the force arm, thereby achieving the purpose of labor saving. There are a variety of tree shear products on the market that can adjust the length of the grip. The grip length adjustment method of each product is not the same, but the grip is not a retractable sleeve structure, and the sleeve is fixed by a control device. The length of the tube.
However, a longer grip will result in an excessively large opening after the open tree is cut, so that the user's hands must also be large enough to be manipulated. However, even if the long grip can have a labor-saving effect, the over-open grip is difficult for the user to operate the folding and shearing action due to the ergonomics. Further, the above-described control device for adjusting the length of the grip cannot be applied during the operation of the cutting, and thus it is inconvenient in use.

The main object of the present invention is to provide a tree shear which can reduce the opening degree of the grip, the grip of which is a retractable structure, and utilizes the traction of the connecting rod to change the length of the grip when the grip is opened, thereby reducing the grip. It is ergonomic and saves the force of shearing.
To achieve the foregoing objects, the present invention provides a tree cutter capable of reducing the degree of grip opening, comprising:
a cutting portion comprising a first cutting edge and a second cutting edge pivotally connected to each other;
a first grip connected to the first cutting edge;
a second grip, which is provided with a second front section and a second rear section, wherein the second front section is connected to the second cutting edge, and the second front section and the second rear section are sleeved to each other to generate a relative displacement, thereby generating a relative displacement. Varying the length of the second grip;
A first connecting rod has one end pivoted to the first grip and the other end pivoted to the second rear section.
In one embodiment, the first grip is provided with a first front pivot joint at one end of the first cutting edge, and the second rear portion is provided with a second rear pivot joint near one end of the second front portion. The two ends of the first connecting rod are respectively pivotally connected to the first front pivoting seat and the second rear pivoting seat.
Furthermore, the first grip is further provided with a first front section and a first rear section, the first front section is connected to the first cutting edge, and the first front section and the first rear section are sleeved to each other to generate The relative displacement is used to change the length of the first grip; the first link connects the first front section and the second rear section, and the first rear section and the second front section are connected by a second link.
The first rear section is a hollow sleeve, and the first front section is slidably inserted into the first rear section; the second rear section is a hollow sleeve, and the second front section is slidably inserted Located in the second rear section.
The first rear portion is provided with a first rear pivoting seat, and the second front portion is provided with a second front pivoting seat at one end of the second cutting edge; and the two ends of the second connecting rod are respectively pivotally connected to the first a rear pivoting seat and the second front pivoting seat. Further, the first front pivoting seat and the first rear pivoting seat are respectively disposed on a side of the first grip facing the second grip, and the second front pivoting seat and the second The rear pivoting seats are respectively disposed on a side of the second grip facing the first grip.
In addition, a reference plane that passes through the center of the first grip and the second grip is defined, and the first front pivotal seat and the second rear pivotal seat to which the first link is connected are located at the reference The first rear pivoting seat and the second front pivoting seat to which the second link is connected are located on the other side of the reference surface.
Furthermore, one of the first link or the second link is composed of two mutually pivoted rod members, and a stopper for blocking the pivoting of the two rod members is disposed on both sides of the pivotal joint .
The above objects and advantages of the present invention will be readily understood from the following detailed description of the embodiments of the invention.

1‧‧‧cutting section 11‧‧‧first blade 12‧‧‧second blade 111,121‧‧‧ joint 2‧‧‧first grip 21‧‧‧ first front pivot joint 22‧ ‧First front section 23‧‧‧ First back section 3‧‧ Second grip 31‧‧‧Second front section 32‧‧ Second rear section 321‧‧ Room 33‧‧‧Second rear pivoting seat 4 ‧‧‧First Link 5‧‧‧Cutting Unit 51‧‧‧First Blade 52‧‧‧Second Blade 511, 521‧‧‧ Jointing Section 6‧‧‧ First Grip 61‧‧‧ First The former paragraph 62‧‧‧ the first rear section 621‧‧ The first chamber 63‧‧‧The first front pivot joint 64‧‧‧The first rear pivot joint 7‧‧‧The second grip 71‧‧‧ second前段72‧‧‧Second rear section 721‧‧ Second room 73‧‧‧Second front pivot joint 74‧‧‧Second rear pivot joint 81‧‧‧First connecting rod 82‧‧‧ second Connecting rod 821‧‧‧ rod 822‧‧‧stops P‧‧‧ datum

1 is a plan view showing a first embodiment of the present invention. FIG. 2 is a schematic view showing a first embodiment of the present invention. FIG. 5 is a schematic exploded view of a second embodiment of the present invention. FIG. 6 is a cross-sectional view taken along line A-A of FIG. 4. FIG. 7 is a schematic view showing a state of use of the second embodiment of the present invention.

Referring to Figures 1 and 2, there is shown a first embodiment of the present invention for reducing the degree of grip opening, comprising a cutting portion 1, a first grip 2 and a second Grip 3. The shearing portion 1 is pivotally connected by a first cutting edge 11 and a second cutting edge 12. The branches of the plant can be cut by controlling the relative pivoting of the two cutting edges 11, 12. The first cutting edge 11 and the second cutting edge 12 respectively define a joint portion 111, 121 respectively coupled with the first grip 2 and the second grip 3 for controlling the two cutting edges through the two grips.
In detail, the first blade 11 is fixedly coupled to the top end of the first grip 2 by a joint portion 111; on the other hand, the second blade 12 is fixedly coupled to the second grip 3 by a joint portion 121 thereof. top. The first grip 22 includes a first front section 22 and a first rear section 23, wherein the first front section 22 and the first rear section 23 may be mutually spliced or integrally connected. The second grip 3 includes a second front section 31 and a second rear section 32. The second cutting edge 12 is coupled to the second front section 31, and the second front section 31 and the second rear section 32 are sleeved with each other. In the embodiment, the second rear section 32 is a hollow sleeve having a chamber 321 therein, and the second front section 31 is inserted into the chamber 321 and is slidable in the chamber 321 . With the above structure, the overall length of the second grip 3 can be changed as the relative positions of the second front section 31 and the second rear section 32 change.
In addition, the first grip 2 and the second grip 3 are connected by a first link 4. In this embodiment, a first front pivoting seat 21 is disposed at one end of the first gripping edge 11 and a second rear pivoting seat 33 is disposed on the second rear end 32. The first rear portion 32 is provided with a second rear pivoting seat 33. The two ends of the connecting rod 4 are respectively pivotally connected to the first front pivoting seat 21 and the second rear pivoting seat 33. Further, the first front pivoting seat 21 is disposed on a side of the first grip 2 facing the second grip 3, and the second rear pivoting seat 33 is disposed on the second rear section 32. One side of the first grip 2 is disposed, whereby the first link 4 is disposed between the first grip 2 and the second grip 3.
With the above structure, when the user opens the two grips 2, 3 with both hands, as shown in FIG. 3, as the first grip 2 and the second grip 3 are gradually relatively distant, due to The length of the first link 4 is fixed, so that the first link 4 pulls the second rear section 32 to generate a displacement relative to the second front section 31, so that the second front section 31 gradually collects the second rear section 32. Further, the overall length of the second grip 3 is further shortened. Thereby, the distance between the first grip 2 and the second grip 3, that is, the opening between the two grips 2, 3, decreases as the length of the second grip 3 is shortened. The structure of the tree shear is more ergonomic after the two grips 2 and 3 are opened, and the two grips 2 and 3 can be cut and cut more labor-saving.
4 and 5 are a second embodiment of the present invention, which includes a cutting portion 5, a first grip 6, and a second grip 7. The shearing portion 5 is pivotally formed by a first cutting edge 51 and a second cutting edge 52. The branches of the plant can be cut by controlling the relative pivoting of the two cutting edges 51, 52. The first cutting edge 51 and the second cutting edge 52 respectively define a joint portion 511, 521 which is combined with the first grip 6 and the second grip 7 respectively for guiding the two cutting edges through the two grips.
The first gripper 6 is provided with a first front section 61 and a first rear section 62. The first cutting edge 51 is fixedly coupled to the top end of the first front section 61 by a joint portion 511 thereof, and the first front section 61 and the first front section 61 A rear section 62 is nested with each other. In this embodiment, the first rear section 62 is a hollow sleeve having a first chamber 621 therein, and the first front section 61 is inserted into the first chamber 621, and is Sliding in the chamber 621. With the above structure, the overall length of the first grip 6 can be changed as the relative position of the first front section 61 and the first rear section 62 changes.
The second grip 7 is provided with a second front section 71 and a second rear section 72. The second cutting edge 52 is fixedly coupled to the top end of the second front section 71 by a joint portion 521 thereof, and the second front section 71 and the second front section 71 The second rear sections 72 are sleeved to each other. In this embodiment, the second rear section 72 is a hollow sleeve having a second chamber 721 therein, and the second front section 71 is inserted into the second chamber 721, and is applicable to the second The chamber 721 slides. With the above structure, the overall length of the second grip 7 can be changed as the relative positions of the second front section 71 and the second rear section 72 change.
The first grip 6 and the second grip 7 are connected by a first link 81 and a second link 82. In the embodiment, the first front section 61 is provided with a first front pivoting seat 63, and the first rear section 62 is provided with a first rear pivoting seat 64. The second front section 71 is provided with a first end. The second front pivoting seat 73 is provided with a second rear pivoting seat 74. The two ends of the first connecting rod 81 are respectively pivotally connected to the first front pivoting seat 63 and the second rear pivoting seat 74, thereby connecting the first front section 61 and the second rear section 72; and the second The two ends of the connecting rod 82 are respectively pivotally connected to the first rear pivoting seat 64 and the second front pivoting seat 73 , thereby connecting the first rear section 62 and the second front section 71 . Further, the first front pivoting seat 63 and the first rear pivoting seat 64 are respectively disposed on one side of the first grip 6 facing the second grip 7, and the second front pivoting seat 73 and the second rear pivoting seat 74 are respectively disposed on a side of the second grip 7 facing the first grip 6, thereby the first connecting rod 81 and the second connecting rod 82 are disposed on the side The first grip 6 is between the second grip 7.
In addition, the first link 81 and the second link 82 are in a cross shape, and the first link 81 and the second link 82 respectively have thicknesses, so that the two links 81 and 82 are respectively connected. The pivoting seats 63, 64, 73, 74 are not located at opposite positions of the two grips 6, 7. In detail, as shown in FIG. 6, a first front pivotal connection to which the first link 81 is connected is defined by a reference plane P that simultaneously passes through the center of the first grip 6 and the second grip 7. The seat 63 and the second rear pivoting seat (not shown) are located on one side of the reference surface P, and the first rear pivoting seat 73 and the second front pivotal connection to which the second connecting rod 82 is connected A seat (not shown) is located on the other side of the reference plane P, thereby preventing the first link 81 and the second link 82 from interfering with each other between the grips 6, 7.
On the other hand, one of the first link 81 or the second link 82 is composed of two rod members that are pivotally connected to each other; in the embodiment, the second link 82 is pivoted by two rods. Pieces 821. In addition, a stopper 822 for blocking the excessive pivoting of the two rod members 821 is fixed on both sides of the pivotal joint of the two rod members 821.
With the above structure, when the user opens the two grips 6, 7 with both hands, as shown in Fig. 7, as the first grip 6 and the second grip 7 are gradually relatively distant, due to The lengths of the first link 81 and the second link 82 are fixed, so the first link 81 pulls the first front section 61 and the second rear section 72, and the second link 82 affects the first The rear section 62 and the second front section 71 cause the first front section 61 to generate a displacement relative to the first rear section 62, so that the first front section 61 gradually collects into the first rear section 62, and the second front section 71 is generated. With respect to the displacement of the second rear section 72, the second front section 71 is gradually collected into the second rear section 72, thereby shortening the overall length of the first grip 6 and the second grip 7, respectively. Thereby, the distance between the first grip 6 and the second grip 7, that is, the opening between the two grips 6, 7 follows the first grip 6 and the second grip The length of 7 is shortened and reduced, so that the structure of the tree shear is more ergonomic after the two grips 6 and 7 are opened, and the two grips 6 and 7 can be cut and cut more labor-saving.
In addition, in the process of folding the two grips 6, 7, the micro-pivoting of the two rods 821 of the second link 82 can be utilized to make the folding movement of the two grips 6, 7 smoother.
The disclosure of the above embodiments is intended to be illustrative of the invention and is not intended to limit the invention.
In summary, it will be apparent to those skilled in the art that the present invention can achieve the foregoing objectives and is in accordance with the provisions of the Patent Law.

1‧‧‧cutting department

11‧‧‧ first blade

12‧‧‧second blade

111, 121‧‧‧ Joint Department

2‧‧‧First grip

21‧‧‧First front pivot seat

22‧‧‧First front section

23‧‧‧First back paragraph

3‧‧‧Second grip

31‧‧‧ second front section

32‧‧‧second second paragraph

321‧‧ ‧ room

33‧‧‧Second rear pivoting seat

4‧‧‧first link

Claims (10)

A tree cutter capable of reducing grip opening, which includes:
a cutting portion comprising a first cutting edge and a second cutting edge pivotally connected to each other;
a first grip connected to the first cutting edge;
a second grip, which is provided with a second front section and a second rear section, wherein the second front section is connected to the second cutting edge, and the second front section and the second rear section are sleeved to each other to generate a relative displacement, thereby generating a relative displacement. Varying the length of the second grip;
A first connecting rod has one end pivoted to the first grip and the other end pivoted to the second rear section. The tree shear according to claim 1, wherein the second rear section is a hollow sleeve, and the second front section is slidably inserted in the second rear section. The tree cutter for reducing the opening degree of the handle according to claim 1, wherein the first grip is provided with a first front pivot joint at one end connected to the first cutting edge, and the second rear segment is adjacent to the second One end of the front end is provided with a second rear pivoting seat, and the two ends of the first connecting rod are respectively pivotally connected to the first front pivoting seat and the second rear pivoting seat. The tree cutter for reducing the opening degree of the handle according to claim 3, wherein the first front pivoting seat is disposed on a side of the first grip facing the second grip, and the second rear pivot The socket is disposed on a side of the second grip facing the first grip. The tree cutter for reducing the opening degree of the handle according to claim 1, wherein the first grip is provided with a first front section and a first rear section, the first front section is connected to the first cutting edge, and the first The front section and the first rear section are sleeved to each other to generate a relative displacement, thereby changing the length of the first grip; the first link connecting the first front section and the second rear section. The tree cutter for reducing the grip opening degree as claimed in claim 5, wherein the first rear segment and the second front segment are connected by a second link. The tree shear of the handle opening according to claim 6, wherein the first front section is provided with a first front pivot joint at one end connected to the first cutting edge, and the first rear section is provided with a first rear pivot a second front pivoting seat is disposed at one end of the second cutting edge, and a second rear pivoting seat is disposed on the second rear end; and the two ends of the first connecting rod are respectively pivotally connected to The first front pivoting socket and the second rear pivoting socket are respectively pivotally connected to the first rear pivoting socket and the second front pivoting socket. The tree cutter for reducing the opening degree of the handle according to claim 7, wherein the first front pivoting seat and the first rear pivoting seat are respectively disposed on the first grip facing one of the second grips On the side, the second front pivoting seat and the second rear pivoting seat are respectively disposed on a side of the second grip facing the first grip. The tree cutter for reducing the grip opening degree as claimed in claim 8, wherein a reference plane that passes through the center of the first grip and the second grip is defined, and the first link is connected The first front pivoting seat and the second rear pivoting seat are located on one side of the reference surface, and the first rear pivoting seat and the second front pivoting seat connected to the second connecting rod are located on the reference surface The other side. The tree shear according to claim 6, wherein the first link or the second link is composed of two mutually pivoted rod members, and is at a pivotal position. A stopper for blocking the excessive pivoting of the two rods is fixed on both sides.