CN200984745Y - labor-saving shears - Google Patents

Abstract

The utility model provides a labor-saving scissors, which comprises a main cutter body, an auxiliary cutter body and two involutive force applying arms, wherein the scissors are formed by locking a plurality of screws and nuts, a handle rod extends from the left side below the main cutter body, a main pivot hole is arranged at the central position of the middle section, an eccentric pivot hole is arranged on the left side below the main pivot hole, a tool end is arranged on the right side of the upper section, a main pivot hole is arranged at the middle section of the auxiliary cutter body, a strip-shaped arm force adjusting hole extends from the lower section, a limiting groove is arranged on the outer side between the main pivot hole and the arm force adjusting hole, a tool end is arranged on the left side of the upper section, the force applying arm is shaped like ㄣ, the lower section is provided with the handle rod, the bent section of the left side of the upper section is a bent section protruding towards both sides, a linkage pivot hole is arranged below the bent section, and an eccentric pivot hole is arranged; the utility model has the advantages of use with the help of above-mentioned structure, the utility model has the advantages of can cuting thicker branch, cut more forcefully and smoothly with the use.

Description

labor-saving shears

technical field

The utility model relates to a labor-saving scissors for cutting or cutting articles, in particular to a labor-saving scissors which can obtain smoother movement and save labor through interlocking relationship.

Background technique

In order to beautify the environment and increase the greenery in the home environment, companies, and parks, some types of flowers, plants, shrubs, and even large trees are often planted to improve the atmosphere of the entire living environment space, and the branches and leaves of flowers, plants, shrubs, and trees will grow freely with the planting time At this time, timely pruning must be done to increase its beauty and prevent the aging branches from falling and hurting people. However, some branches are thick and hard, and it is not easy to prune. You must use labor-saving gardening shears for pruning. work, to cut off the thick and hard branches quickly and easily, and the structure of the common gardening shears is mostly shown in the structures of Fig. 8 to Fig. 12, which has a main cutter body 10, a secondary cutter body 20 and a force arm 30 and cooperate with several screws and nuts to lock and set, wherein, a handle rod 11 extends on the left side below the main knife body 10, a central pivot hole 12 is provided in the center of the middle section, and an eccentric pivot hole is provided on the right below the central pivot hole 12 13. Anvil 14 is extended from the upper right side, a central pivot hole 21 is provided in the middle section of the auxiliary cutter body 20, a long adjustment hole 22 is provided below, a blade 23 is provided on the left side of the top, and a blade 23 is provided on the lower section of the force-applying arm 30. The handle bar 31 is provided with a linkage pivot hole 32 on the left side of the middle section, and is provided with a combined pivot hole 33 after bending for a section on the upper part.

The combination of its structure, after the main cutter body 10 and the auxiliary cutter body 20 are first stacked, utilize screws and nuts to pass through the center pivot holes 12, 21 of each other, so that the two are combined, and the anvil 14 and the blade 23 are relatively combined. The force applying arm 30 is pivotally set at the eccentric pivot hole 13 of the main cutter body 10 by combining the pivot hole 33 with a screw and a nut, and the linkage pivot hole 32 below is pivotally arranged in the long adjustment hole 22 of the auxiliary cutter body 20 , and can match the opening degree of the main cutter body 10 and the auxiliary cutter body 20 to adjust the displacement change in the long hole 22 .

When its main cutter body 10 and the applying force arm 30 were closed, the anvil 14 and the blade 23 were combined, and the central pivot hole 21 of the auxiliary cutter body 20 and the combining pivot hole 33 of the applying force arm 30 were closer. Therefore, the linkage pivot hole 32 is located above the adjustment slot 22, which can be clearly shown in Figure 10. The hole 22 is pulled open to make the anvil 14 and the blade 23 open an angle, because the auxiliary knife body 20 and the force-applying arm 30 are not on the same central pivot node, so the situation of deviation will occur, and the pivot hole is linked at this time 32 gradually moves downward from the top of the adjustment slot 22, so as to achieve a non-concentric interlocking relationship. However, this kind of structural design forms a straight line between the central pivot holes 21, 12, the combined pivot holes 33 and the interlocking pivot holes 32 , the distance is the largest, and if the interlocking pivot hole 32 is to be opened again, the adjustment slot 22 will return to move downward, so it can be seen that:

(1) This structural design stroke is short, can't make the opening of anvil 14 and blade 23 open bigger, the branch thickness that can cut is limited.

(2) When the central pivot holes 21, 12, the connecting pivot holes 33 and the interlocking pivot holes 32 are in a straight line, if the opening of the anvil 14 and the blade 23 is to be enlarged, the central pivot holes 21, 12 and the combined pivot hole 33 and interlocking pivot hole 32 will produce a stretch greater than 180 degrees, and then the situation of warping will occur, as shown in Figure 11 and Figure 12, resulting in unsmooth use. When the angle is too small, the force is not applied smoothly, and it cannot be effectively used with the force-arm principle to save effort.

(3) the setting effect of its adjustment slot 22 is only to adjust the offset when the center pivot hole 21, 12 and the joint pivot hole 33 and the interlocking pivot hole 32 distance change are provided, and the whole stroke of an opening and closing is Back and forth twice, and the action stroke is short, so the labor-saving effect produced is limited, and the opening of the anvil 14 and the blade 23 can not be increased, and the labor-saving effect can not be increased, because usually the larger the opening, the larger the opening must be sheared The force is greater.

In view of this, the inventor thought about the idea of the utility model and designed it with many years of experience. After many discussions and sample tests, and several revisions and improvements, the utility model was finally released.

Utility model content

The purpose of this utility model is to provide an improved labor-saving scissors to solve the following problems in the prior art: the opening of the anvil and the blade cannot be larger, and the central pivot hole, the joint pivot hole and the linkage pivot hole After they are in a straight line, the corners will be warped, which will cause inconvenience in use, and the labor-saving effect produced by the interlocking relationship is limited.

In order to achieve the above purpose, the utility model provides a labor-saving scissors, which includes a main knife body, a pair of knife bodies and two paired force arms, which are formed by cooperating with a number of screws and nuts, wherein the main knife body There is a handle bar extending from the left side of the lower part, a main pivot hole is set in the center of the middle section, and an eccentric pivot hole is set on the left side below the main pivot hole, and a tool end is combined on the upper right side, which can be an anvil or an anvil. There is a main pivot hole in the middle part of the blade, the lower part is extended with a long arm force adjustment hole, and a limiting groove is set on the outside between the main pivot hole and the arm force adjustment hole, and the upper part is left. Tool end, which can be anvil or blade, the force arm is in the shape of ㄣ, the lower section is provided with a handle rod, the upper section is bent to the left and is a zigzag section protruding to both sides, and there is a linkage below the zigzag section. Pivot hole, the top is provided with eccentric pivot hole.

Compared with the prior art, the utility model has the following advantages:

(1) The labor-saving scissors of the present utility model can be designed in the same stroke, so that the opening of the opened tool end can be opened larger, and can be used for cutting thicker branches.

(2) In the labor-saving scissors of the present utility model, between the main cutter body, the auxiliary cutter body and the force application arm, the main pivot hole, the eccentric pivot hole and the linkage pivot hole are triangular shapes that can be easily applied, whether it is opened or They are all the same when closed, and the direction of use is in accordance with the direction of mechanics, which can make the use of cutting more smooth and smooth.

(3) In the labor-saving shears of the present utility model, the main pivot hole, the eccentric pivot hole and the linkage pivot hole of the interlocking relationship point are presented in a triangular shape that is convenient for applying force, and when cutting branches deeper, although the more necessary Greater force, but its linkage pivot hole will also move in the arm force adjustment hole, and at the same time gradually increase the distance from the main pivot hole, increase the length of the force arm, and increase the leverage force that can be applied, so at the end When it is difficult to cut, the shear force generated is the largest, and the use is less labor-saving and more convenient to cut.

Description of drawings

Fig. 1 is a three-dimensional assembled view of the utility model.

Fig. 2 is a three-dimensional exploded view of the utility model.

Fig. 3 is a combined front view of the utility model, which is in a closed state.

Fig. 4 is a combined side view of the utility model.

Fig. 5 is a combined front view of the utility model, which is in an open state.

Fig. 6 is a schematic view of the use state of an embodiment of the present invention.

Fig. 7 is a schematic view of another embodiment of the utility model in use.

Fig. 8 is a three-dimensional combined view of the structure of the existing gardening shears.

Fig. 9 is a three-dimensional exploded view of the structure of the existing gardening shears.

Fig. 10 is a combined front view of the structure of the existing gardening shears, which is in a closed state.

Fig. 11 is a schematic diagram of a half-open state of the existing gardening shears structure.

Fig. 12 is a schematic view of the fully opened state of the existing gardening shears structure.

Detailed ways

In order to enable a further understanding and understanding of the purpose, features and effects of the present utility model, the preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings:

First of all, please refer to Figures 1 and 2, which includes a main cutter body 40, a secondary cutter body 50 and two pairs of force-applying arms 60, 600, which are formed by locking together a number of screws and nuts.

Wherein, a handle rod 41 extends from the lower left side of the main knife body 40, a main pivot hole 42 is provided at the central position of the middle section, and an eccentric pivot hole 43 is provided on the left side below the main pivot hole 42, and an eccentric pivot hole 43 is provided on the left side of the upper right side. The tool end 44, which can be an anvil or a knife edge, is provided with a main pivot hole 51 in the middle section of the auxiliary knife body 50, and a strip-shaped arm force adjustment hole 52 is extended from the lower section, and lies in the main pivot hole 51 and the arm force adjustment hole 52. A limiting groove 53 is provided on the outside of the middle, and a tool end 54 is provided on the left side of the upper section, which can be an anvil or a blade. The bending part is a zigzag section protruding to both sides, the interlocking pivot hole 62 is provided at the bottom of the zigzag section, and the eccentric pivot hole 63 is provided at the top.

The combination of its structure, as shown in Figures 3 and 4, the auxiliary cutter body 50 is to utilize the main pivot hole 51 to be pivotally arranged at the main pivot hole 42 on one side of the main cutter body 40, and the two force-applying arms 60, 600 are formed by the combination mode. On both sides of the main cutter body 40, and covering the auxiliary cutter body 50, the eccentric pivot hole 63 is pivotally arranged at the eccentric pivot hole 43 of the main cutter body 40, and at this time, the lower section of the auxiliary cutter body 50 is located at the eccentric pivot holes 43, 63 The right side of the eccentric pivot hole 43, 63 is provided with a limiting groove 53, and when the screw at this place is locked, a circular ring sleeve 55 can be used to make the circular ring sleeve 55 Right at the limit groove 53, in order to reduce friction in use, the interlocking pivot hole 62 in the middle section of the force applying arm 60, 600 is fitted with a screw and nut, and is passed through the arm force adjustment hole 52 of the auxiliary knife body 50 to slide the pivot. Design, and when the screw at this place is passed through, a convex ring sleeve 64 can be used to pass through, so that the convex ring sleeve 64 is just at the arm force adjustment hole 52, so as to reduce the friction in use.

When its main cutter body 40 and the force application arms 60,600 were closed, the tool ends 44,54 of the main cutter body 40 and the secondary cutter body 50 were relatively closed, and the secondary cutter body 50 lower section was connected by the force application arms 60,600 The moving pivot hole 62 is tangent to the main cutter body 40, and it uses the limiting groove 53 to block the eccentric pivot holes 43 and 63. At this time, the interlocking pivot hole 62 is located at the bottom of the arm force adjustment hole 52, as shown in the figure 3; when the handle bars 41,61 of the main cutter body 40 and the force-applying arms 60,600 are opened, the positions of the coaxial eccentric pivot holes 43,63 remain unchanged, and the positions of the interlocking pivot holes 62 are then moved outwards. Sliding, when the force applying arm 60600 slides outward, the linkage pivot hole 62 is closer to the main pivot holes 42, 51 of the coaxial center of the main cutter body 40 and the auxiliary cutter body 50, so the linkage pivot hole 62 will be controlled by the arm force adjustment hole 52 The bottom moves up gradually, as shown in Figure 5, so that the tool ends 44,54 are opened; , the interlocking pivot hole 62 is located at the top of the arm force adjustment hole 52. With the force arm of the lever, the auxiliary cutter body 50 is labor-savingly cut to the main cutter body 40. At this time, the distance between the main pivot holes 51, 42 and the interlocking pivot hole 62 is Short, so the auxiliary cutter body 50 and the main cutter body 40 can be tangent quickly, but when the cutting angle is smaller, the distance between the main pivot holes 51, 42 and the linkage pivot hole 62 is larger, the greater the leverage force generated, and the easier it is to use. Labor-saving, its reason is: when tool end 44,54 is opened to the maximum, it is generally thicker branch, and during initial cutting, the blade of tool end 44,54 cuts into branch part less, therefore does not need too big However, when the blade cuts deep into the branch, the interference between the blade and the branch increases, and the shear thickness increases, so a greater force is required. At this time, the linkage pivot hole 62 moves to the rear of the arm force adjustment hole 52, The moment arm can be lengthened, and when the same force is applied, it can generate greater shearing force, so as to cut off thick branches more easily.

Fig. 6 and Fig. 7 show that the gardening shears of the present invention are equipped with handles, and two different types of tool ends 44, 54. Figs. 1 to 6 show a chopping board and a blade. Figure 7 shows the shape of the two blades tangent.

As mentioned above, its use has the following advantages:

(1) Adopting the structural design of the present utility model, in the same stroke, the openings of the opened tool ends 44, 54 can be opened larger, and can be used for cutting thicker branches.

(2) Between the main cutter body 40, the auxiliary cutter body 50 and the force application arms 60, 600 of its components, the main pivot holes 42, 51, the eccentric pivot holes 43, 63 and the linkage pivot holes 62 are triangular shapes that can be conveniently applied , whether it is opened or closed, it is the same, and the direction of use is in accordance with the direction of mechanics, which can make the use of shearing more smooth and smooth.

(3) The main pivot holes 42, 51, the eccentric pivot holes 43, 63 and the linkage pivot holes 62 of the interlocking relationship points are presented in a triangular shape convenient for applying force, and when cutting the branches deeper, although the more necessary greater force, but its interlocking pivot hole 62 will also move in the arm force adjustment hole 52, and at the same time gradually increase the distance from the main pivot holes 42, 51 to increase the length of the moment arm, so that the lever force that can be applied Increase, so when it is the most difficult to cut, the shear force generated is the largest, and the use is less labor-saving and more convenient to cut.

But what is described above is only a preferred embodiment of the present utility model, when can not limit the scope of the present utility model implementation with it; Within the scope covered by the utility model patent.

Claims (4)

1. laborsaving cutting includes operator body, a secondary cutter hub and two involutory force arms, forms by some screws, nut lock knot, it is characterized in that:

Extend in the left side, below of operator body a handle-holding rod, the stage casing middle position is provided with a main pivot hole, be provided with an eccentric pivot hole and below main pivot hole, take back, the right, top is in conjunction with being provided with tool ends end in addition, the stage casing of secondary cutter hub is provided with a main pivot hole, hypomere extends the arm strength that is provided with strip and adjusts the hole, epimere is taken back and is provided with tool ends end in addition, force arm is to be like the ㄣ shape, hypomere is provided with handle-holding rod, epimere is taken back the knee also for toward two side-prominent zigzag sections, is provided with interlock pivot hole below this zigzag section, and the top then is provided with eccentric pivot hole;

Secondary cutter hub is hubbed at operator body place, main pivot hole on one side by main pivot hole, two force arms are involutory in operator body both sides, and coat secondary cutter hub, eccentric pivot hole is hubbed at the place, eccentric pivot hole of operator body, the interlock pivot hole in force arm stage casing cooperates with screw nut, and the place, arm strength adjustment hole that is arranged in secondary cutter hub is pivoted.

2, laborsaving cutting according to claim 1 is characterized in that, the main pivot hole of secondary cutter hub and arm strength are provided with a limiting groove outside adjusting between the hole.

3, laborsaving cutting according to claim 1 is characterized in that, the eccentric pivot hole of operator body and force arm is locked with screw, nut and established and use wearing of circular ring set and be positioned at secondary cutter hub outside.

4, laborsaving cutting according to claim 1 is characterized in that, the interlock pivot hole of force arm cooperates the arm strength that wore secondary cutter hub to adjust the hole with screw, nut and use has wearing of a convex ring set and is positioned at place, arm strength adjustment hole.

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