JP6968440B2 - Small super strong scissors - Google Patents

Description

The present invention relates to small and powerful scissors.

FIG. 1 is a pair of scissors having a plurality of stages of the teco lever invented by the present inventor (Japanese Patent Application No. 2013-249111).
According to such multi-stage scissors, a strong cutting force can be exerted with a small force. In FIG. 1, (L ₁ / l ₁ ) is ⁿ times stronger (where n is the number of stages, L ₁ is the length of the side to which the force is applied, and l ₁ is the length of the side to which the force is applied).

However, in the Japanese Patent Application No. 2013-249111 multi-stage scissors (FIG. 1) of the present inventor, as the number of stages n increases, the length from the handle to the cutting edge (L in FIG. 1) becomes longer, the form becomes larger, and the place becomes narrow. It was sometimes difficult to use in.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a compact ultra-strong scissors that can be miniaturized while being a multi-stage scissors that can exert a strong cutting force with a small force.

In order to achieve the above object, the compact ultra-strong scissors of the present invention can be solved by folding back from the fulcrum of the multi-stage scissors or sharing the rotation axis.

According to the present invention, the overall shape of the multi-stage scissors that can be increased can be made smaller, the overall length does not increase during use, so it is easy to use, the cutting edge can be protected, and it is safe when used. Being able to exert a strong cutting force with a small force. Since it can be made small, it can be used even in a narrow space. It doesn't take up much space for storage. It can be cut even on the side. It has great effects such as being able to use either outer scissors or inner scissors, or opening up new uses that can be used both inside and outside, and being able to be used as a powerful stripper, pliers, pliers, wrench, etc.

It is a figure which shows the scissors which made the techolever invented by the present inventor in a plurality of stages. It is a figure which shows the small ultra-strong scissors which concerns on 1st Embodiment of this invention which is the invention which further improved FIG. It is an exploded view which shows the compact super strong scissors which concerns on 1st Embodiment of this invention. It is a figure which shows the small super strong scissors which concerns on 2nd Embodiment of this invention. It is an exploded view which shows the compact super strong scissors which concerns on 2nd Embodiment of this invention. It is a figure which shows the small ultra-strong scissors which concerns on 3rd Embodiment of this invention. It is an exploded view which shows the compact super strong scissors which concerns on 3rd Embodiment of this invention. It is a figure which shows the small ultra-strong scissors which concerns on 4th Embodiment of this invention. It is an exploded view which shows the compact super strong scissors which concerns on 4th Embodiment of this invention. It is an exploded view which shows the compact super strong scissors which concerns on 5th Embodiment of this invention. It is an exploded view which shows the compact super strong scissors which concerns on 5th Embodiment of this invention. It is a figure which shows the small super strong scissors which concerns on 6th Embodiment of this invention. It is an exploded view of the 6th Embodiment of this invention. It is a figure of the 7th Embodiment of this invention. It is an exploded view of the 7th Embodiment of this invention. An eighth embodiment of the present invention is shown. It is a disassembled part figure of the 9th Embodiment of this invention. It is a figure which shows the small ultra-strong scissors which concerns on the 9th Embodiment of this invention. The small ultra-strong scissors according to the 9th Embodiment of this invention are shown. The figure which shows the tenth embodiment of this invention. It is a component exploded view of the tenth embodiment of this invention. A twelfth embodiment of the present invention is shown. It is an exploded view of the twelfth embodiment of this invention. It is a figure which shows the thirteenth embodiment of this invention. The 14th embodiment of the present invention is shown. The fifteenth embodiment of the present invention is shown.

The small ultra-strong scissors of the present invention will be described with reference to the drawings.

FIG. 1 is a multi-stage scissors of Japanese Patent Application No. 2013-249111 invented by the present applicant.
1 and 2 are handles. The handles 1 and 2 may have the same size or different sizes. Reference numerals 4 and 5 are force arms provided with the handles 1 and 2. Reference numeral 3 is a first central rotation fulcrum (rotation axis) in which the force arm 4 and the force arm 5 are coupled. The other end side of the handles 1 and 2 is a rotational force transmission mechanism in which the rotational force is transmitted by the handles 1 and 2. Specifically, 7 is a rotational force transmission mechanism on the handle 1 side, and 8 is a rotational force transmission mechanism on the handle 2 side.
Reference numeral 9 is a rotation fulcrum provided at the tip of the rotational force transmission mechanism 7, and 10 is a rotation fulcrum provided at the tip of the rotational transmission mechanism 8. Reference numeral 11 is a rotational force transmission mechanism connected to the rotational fulcrum 9, and reference numeral 12 is a rotational force transmission mechanism (hereinafter, also referred to as a transmission mechanism) connected to the rotational fulcrum 10.
Reference numeral 13 is a second central rotation fulcrum to which the transmission mechanism 11 and the transmission mechanism 12 are coupled. 14 and 15 are scissors blades. The blade 14 is provided on the open end side of the transmission mechanism 11 via the second center rotation fulcrum 13, and the blade 15 is also provided on the open end side of the transmission mechanism 12 via the second center rotation fulcrum 13. The operation of the scissors configured in this way will be described as follows.
When the handles 1 and 2 are opened and closed, the rotational force is transmitted to the transmission mechanisms 7 and 8 via the first central rotation fulcrum 3. The transmission mechanisms 7 and 8 perform an opening / closing operation, and this opening / closing operation is transmitted to the transmission mechanisms 11 and 12 via the rotation fulcrums 9 and 10.
As a result, when the handles 1 and 2 perform the opening / closing operation, the transmission mechanisms 11 and 12 also perform the opening / closing operation.
This opening / closing operation is transmitted to the blades 14 and 15 via the second rotation fulcrum 13.
The blades 14 and 15 open and close to powerfully cut metal plates and cut thick tree branches.

The cutting force of the scissors at this time will be described.
Ordinary scissors have one stage (one central rotation fulcrum) (not shown).
As shown in FIG. 1, when the number of stages is two (scissors having two central rotation fulcrums 3 and 13), the cutting force is the square of ordinary scissors.
That is, the cutting force of N steps (scissors having N central rotation fulcrums) is the Nth power of ordinary scissors (N is an integer).
This can be easily inferred by the "lever" principle. That is, when the force required for moving an object is applied, if the distance between the fulcrum and the portion to which the force is applied is lengthened, the required force increases in proportion to this distance.
If the length of the side to which the force is applied is X and the length of the side to which the force is applied is Y, the lever action is X / Y. If this is set to N stages, the boosting structure becomes as strong as ^{(X / Y) N.} It is the basic theory of the invention invented by the present inventor that the force becomes Nth power by increasing the number of stages of scissors and the cutting force can be strengthened accordingly.

Based on this basic theory, the present invention is intended to miniaturize the invention of the present inventor in FIG.
[First Embodiment]
The small ultra-strong scissors according to the first embodiment of the present invention will be described with reference to FIGS. 1, 2 and 3.
FIG. 2 shows the first embodiment of the small ultra-strong scissors of the present invention, in which the next rotation shafts 9 and 10 are provided at the tip of the central rotation fulcrum 3 via the arms 7 and 8, and this becomes a folding fulcrum, and the arm 11 ,. 12 is folded back and the blades 14 and 15 are provided again via the central rotation fulcrum 3, and the blades 14 and 15 are provided in a space (referred to as a handle space) between the handles.
As shown in FIG. 3 when FIG. 2 is disassembled, the small ultra-strong scissors according to the first embodiment of the present invention are composed of four parts and a set screw, and these parts are connected by overlapping the portion of the central rotation fulcrum 3. At the same time, it is completed by overlapping and connecting the parts of the rotation fulcrums 9 and 10. Use screws or the like for bonding.
In the compact ultra-strong scissors of the present invention, when the handles 1 and 2 (handles) are closed, the transmission mechanisms 7 and 8 rotate with the central rotation fulcrum 3 as the rotation axis, and the transmission mechanisms 11 and 12 with the center rotation fulcrum 3 as the rotation axis. It rotates, and the rotation causes the blades 14 and 15 to close inward.
Thereby, the object to be cut (cloth or the like) in the handle space can be strongly cut by the blades 14 and 15 according to the theory of the present invention.

The compact ultra-strong scissors of the present invention are the multi-stage scissors shown in FIG. The structure is such that it can be used again and cut with blades 14 and 15.
As a result, the compact ultra-strong scissors of the present invention are characterized in that the central rotation fulcrum, which is the rotation axis, is integrated into one and shared to make it smaller.
Therefore, the length of the entire scissors can be shortened by the amount of the transmission mechanisms 11 and 12 and the blades 14 and 15.
Further, in the case of the multi-stage scissors shown in FIG. 1 of the present invention, the blades 14 and 15 extend when the handles 1 and 2 are opened and closed, but this is not the case with the small ultra-strong scissors of the present invention.
And, like the scissors in FIG. 1, a strong cutting force can be exerted with a small force.
Since the small ultra-strong scissors shown in FIG. 2 share two central rotation fulcrums into one, they are small in size and can exhibit the same cutting force as the multi-stage scissors shown in FIG.
Therefore, according to the small ultra-strong scissors of the present invention, the scissors are small and exert a strong cutting force, and the entire length of the scissors does not extend during operation, so that they can be used in a narrow place or stored in a narrow place. Further, the blade portions 14 and 15 can be protected by 1 and 2, so that the safety is increased.

[Second Embodiment]
4 and 5 are small ultra-strong scissors according to the second embodiment of the present invention.
As shown in FIG. 4, the small ultra-strong scissors of the second embodiment is a further strengthening of the small ultra-strong scissors of the first embodiment. The directions of the blades 14 and 15 are also different in that they face outward.
As shown in the exploded view of FIG. 5, the small ultra-strong scissors of the second embodiment are composed of six parts and a clasp (screw), and these parts are connected by overlapping the parts of the rotation fulcrums 9 and 10. death,
It is folded back, overlapped and connected at the portion of the central rotation fulcrum 3, further overlapped and connected at the portions of the rotation fulcrums 18 and 19, folded again here, returned to the central rotation fulcrum 3 again, and the blades 14 and 15 are operated.
In the small ultra-strong scissors of the second embodiment, when the handles 1 and 2 are opened and closed, the arms 7 and 8 open and close with the central rotation fulcrum 3 as the rotation axis, and the arms 11 and 12 which are folded back and connected at the fulcrum 9 and 10 are connected. Arms 16 and 17 that rotate around the central rotation axis 3 and are folded back at the fulcrum 18 and 19 at the ends of the arms 11 and 12 return to the central rotation axis 3 again and open and close the blades 14 and 15. Is an example of. By repeating this, 4 steps, 5 steps ... N steps are also included in the present invention.
As a result, the object to be cut between the blade 14 and the blade 15 can be cut small but powerfully. Further, since the blade tips 14 and 15 are protected by the arms 7 and 8, the blades 14 and 15 are not damaged, and since the blade does not protrude to the outside, there is an effect that it is safe to use.

The compact ultra-strong scissors shown in FIG. 4 are the three central rotation fulcrums of the three-stage multi-stage scissors that are integrated into one and shared.
Therefore, the cutting force is the same as that of the three-stage multi-stage scissors, but the length of the entire scissors can be shortened.
Since the small ultra-strong scissors of the second embodiment have the same cutting force as the three-stage multi-stage scissors, they cut more than the first embodiment of FIG. 2 having the same cutting force as the two-stage multi-stage scissors. The force is strong, and the length is equivalent to that of the small ultra-strong scissors of the first embodiment.
Further, as in the first embodiment, even if the handles 1 and 2 are closed, the blades 14 and 15 do not extend outward unlike the multi-stage scissors, so that there is an effect that the blades are not bulky at the time of use.
Therefore, according to the small ultra-strong scissors of the second embodiment, the cutting force is stronger and the scissors can be used even in a narrow place.

[Third Embodiment]
The small ultra-strong scissors according to the third embodiment of the present invention will be described with reference to FIGS. 6 and 7.
This third embodiment has higher safety during use and storage than the second embodiment of FIGS. 4 and 5.
That is, unlike the tip portions of 7 and 8 in FIGS. 4 and 5, the tip portions of 7 and 8 are made into semicircular protective projections 24 and 25 as shown in FIGS. 6 and 7. In 7 and 8, the tips of 11 and 12 may be inflated into a semi-circular shape to form a protective protrusion. When the blades 14 and 15 are closed, they are united to form a circle, and the cutting edge is not sharp, and there is an effect that it can be safely handed over and stored.
In addition, the degree of safety is improved even while using scissors.

[Fourth Embodiment]
As shown in FIGS. 8 and 9, the small ultra-strong scissors of the fourth embodiment are provided with both inner blades 14 and 15 and outer blades 20 and 21.
In the small ultra-strong scissors of the fourth embodiment, when the handles 1 and 2 are opened and closed, the arms 7 and 8 open and close around the central rotation fulcrum 3, and the fulcrum 3 is folded back at the fulcrums 9 and 10 so that the arms 11 and 12 rotate in the center. Use again to open and close.
The blades 20 and 21 facing inward are provided at the base ends of the folded arms 11 and 12, and the blades 14 and 15 are provided at the tips of the arms 11 and 12 in the opposite direction (outward) (see the exploded view of FIG. 9).
Therefore, when the handles 1 and 2 are opened and closed, the outer blades 20 and 21 and the inner blades 14 and 15 both open and close. Therefore, the user can use either the outer scissors or the inner scissors, whichever he / she likes, and at the same time, it can be used for both.

[Fifth Embodiment]
The completed state of the fifth embodiment is similar to that of FIG. 8, but different scissors are provided at two places, the outside and the inside, but the parts and the configuration are different from those of the fourth embodiment. FIG. 10 shows a fifth embodiment of the present invention, and FIG. 11 shows an exploded view of the parts.
In the small ultra-strong scissors of the fifth embodiment, when the handles 1 and 2 are opened and closed, the blades 20 and 21 provided on the arms 7 and 8 are opened and closed around the central rotation fulcrum 3, and the blades 20 and 21 are folded back at the fulcrums 9 and 10 to rotate the center. The arms 11 and 12 open and close around the fulcrum 3, and by the opening and closing, the blades 14 and 15 open and close around the central rotation fulcrum 3 and the blades 20 and 21 rotate inward. It is a feature of the fifth embodiment that the blades 20 and 21 are provided on the arms 7 and 8, respectively.
As a result, the object to be cut between the blade 14 and the blade 15 can be cut by the blades 14 and 15, and the object to be cut between the blade 20 and the blade 21 can be cut by the blades 20 and 21.
That is, when the object to be cut is cut on the front side of the scissors, the object to be cut can be cut simultaneously or separately on the front side of the scissors.
Since the small ultra-strong scissors of the fourth and fifth embodiments have a common central rotation fulcrum in the two-stage multi-stage scissors, they have the same effect as the small ultra-strong scissors of the first embodiment. In addition, it has the great effect of cutting inside and outside the scissors.

[Sixth Embodiment]
The small ultra-strong scissors according to the sixth embodiment of the present invention will be described with reference to FIG. 12 and its exploded view 13.
As shown in FIGS. 12 and 13, the small ultra-strong scissors of the sixth embodiment form the blades 22 and 23 laterally by forming the angle between the arms 11 and 12 and the blades 22 and 23 in a substantially L shape. It is an embodiment of the present invention arranged (upper side in the figure).
In the small ultra-strong scissors of the sixth embodiment, when the handles 1 and 2 are opened and closed, the arms 7 and 8 open and close around the central rotation fulcrum 3, and the arms 11 and 12 folded back at the fulcrums 9 and 10 are the central rotation fulcrum 3. The blades 22 and 23 integrated with the arms 11 and 12 in an L shape open and close.
As a result, the object to be cut between the blade 22 and the blade 23 can be cut by the blades 22 and 23.
That is, since the object to be cut on the side of the scissors can be strongly cut, there is a great effect that the cut object in the lateral direction such as cable cutting can be strongly cut.

[7th Embodiment]
FIG. 14 shows a seventh embodiment of the present invention.
In this embodiment, in addition to the L-shaped blades 22 and 23 of the sixth embodiment shown in FIG. 12, blades 20 and 21 are provided on the outside (right side in the figure). However, although this L-shaped blade is an embodiment reversed from the sixth embodiment, the L-shaped blade may be the same as the sixth embodiment. By opening and closing the handles 1 and 2, the side blades 22 and 23 (upper blades 22 and 23 in the figure and the front blades (right in the figure) 20 and 21 can be opened and closed respectively to cut the object. The blades 20 and 21 are added to the arms 7 and 8 of 15.

[FIG. 8 Embodiment]
An eighth embodiment of the present invention is shown in FIGS. 16 and 17. At first glance, it is similar to FIG. 14, but different. As shown in FIG. 17, the parts are different from the seventh embodiment, and as shown in the figure, blades 20 and 21 are provided on the arms 11 and 12, and the blade 30 is L-shaped. , 31 are provided. By opening and closing the handles 1 and 2, the side (upper in the figure) blades 30 and 31 and the front (right in the figure) blades 20 and 21 can operate to cut the object at each position.

[9th Embodiment]
A ninth embodiment of the present invention is shown in FIGS. 18 and 19.
In the ninth embodiment, another lever mechanism is inserted before the above-mentioned embodiments to make it more powerful.
That is, in the ninth embodiment, the first stage of FIG. 1, that is, 1,2,3,4,5,7,8,9,10 and the second stage 11,12,13,14,15 are almost unchanged. The shape, however, 14 and 15 are not provided with blades, and fulcrums 9 and 10 are provided at the tips of 14 and 15 as shown in FIG.
The arms 11 and 12 are provided by folding back to the fulcrums 9 and 10, and the fulcrums 18 and 19 are provided at the other ends via the second central rotation shaft 13, and the re-folding arms 16 and 17 are connected there. The arms 16 and 17 swing around the central rotation shaft 13, and the blades 14 and 15 open and close to cut an object. FIG. 19 shows an exploded view thereof.

[10th Embodiment]
The tenth embodiment of the present invention is shown in FIG. The exploded view is shown in FIG. In the tenth embodiment, the blades 14 and 15 are provided on the eleventh and twelve of the ninth embodiment, and the fulcrums 9 and 10 are provided, and then the levers 20 and 21 are provided by folding back, and the L-shaped blades 22 and 23 are provided here. Is provided. Alternatively, in the tenth embodiment of the present invention, the L-shaped blades 22 and 23 are further provided on the sides (upper in the figure) of the blades 14 and 15 of the ninth embodiment of the present invention.

[11th Embodiment]
In the eleventh embodiment of the present invention, in the ninth embodiment and the tenth embodiment, the first stage lever mechanism (1, 2, 3, 7, 8, 9, 10) is set to two stages, three stages ... n stages. , The eleventh embodiment of the present invention is provided with a folded portion at the tip thereof.

[12th Embodiment]
FIG. 22 shows a twelfth embodiment of the present invention.
In this embodiment, in FIG. 1, it is folded back within 1, 2, 3, 4, and 5. This makes it even more compact. Explaining this with reference to FIG. 22, arm intermediate fulcrums 30 and 31 are provided in the middle of the force arms 4 and 5, second-stage folding arms 11 and 12 are provided here, and blades 14 and 15 are provided by the second rotation fulcrum 13. Open and close. When the handles 1 and 2 are applied, if 30 and 31 are placed between the center of rotation 3 and the handle, for example, 4 to 1, the lever action applies 4 times stronger force to 30 and 31 and is strong to the blades 14 and 15. Is given. Moreover, the whole is housed in the arms 4 and 5, which is compact, and the blades 14 and 15 are housed inside, which has a great effect of being safe.
An exploded view of the twelfth embodiment is shown in FIG.

[13th Embodiment]
FIG. 24 shows a thirteenth embodiment of the present invention.
In this case, blades 20 and 21 are provided at the tips of the force arms 4 and 5 in FIG. 22, and two scissors (14, 15 and 20, 21) having different strengths are provided in one and can be arbitrarily selected. There is an effect that can be used in.

[14th Embodiment]
In the 14th embodiment of the present invention, the blades 14, 15, 20, 21, 22, and 23 are not blades but strippers, pliers, or a wrench.
For example, FIG. 20 of the present invention is the 14th embodiment of the present invention as shown in FIG. 25.
Here, 40 and 41 are strippers for removing the wire coating, 50 and 51 are pliers for crushing pipes and the like, and 60 and 61 are wrenches for tightening bolts and the like. In order to use the present invention, the electric wire can be cut with the strong blades 14 and 15, and then the electric wire is sandwiched between the strippers 40 and 41 to pull the electric wire, the coating of the electric wire is removed, and the electric wire can be joined bare. Also, put the electric wire in the pipe, pinch the pipe between the pliers 50 and 51 to crush the end, pinch the bolt between the wrenches 60 and 61 to fix or rotate, or pinch the pipe between the blades 14 and 15 to cut. Can be done.

[15th Embodiment]
The small ultra-strong scissors of the fifteenth embodiment are for operating the opening and closing of the small ultra-strong scissors of the first to fourteenth embodiments by a motor, a solenoid, or a flood control instead of human power, and an example of the solenoid coil 71 and the magnetic core 70 is shown in the figure. 26 (A) is shown. FIG. 26B is an example in which the motor 72 is provided on the central rotary shaft 3 (a motor, a solenoid, and a mechanism using a hydraulic pressure are known techniques, so they are not shown in detail).
According to the small ultra-strong scissors of the fifteenth embodiment, the scissors can be driven by a motor, a solenoid, or a flood control, so that a stronger cutting force than human power can be exerted.
For example, it exerts the effect of being able to cut and cut thick metal plates and the like.

The present invention is not limited to the above-mentioned details, and what includes the idea of the present invention is the scope of the present invention. For example, based on the basic theory, assuming that the force arm side of the first stage is X1, the transmission mechanism side is the length of Y2, and the nth stage is also Xn, Yn, then X1 / Y1 = Xn / Yn (n =). 2, 3 ...) Is also included in the present invention when the lever and the folding arm are set to arbitrary lengths within a designable range and the rotation axes are separated.

Although the present invention is small, it can be strongly cut with a small amount of force, so it can cut things that were not cut in the past, it does not take up space for work, so it can work in a narrow place, and because it is small, it does not take up space for storage. Commercial scissors that are safe to use, can have functions such as coating removal and compression as well as cutting, and can have multiple functions such as coating blades, pliers, and strippers. , Gardening scissors, industrial scissors, etc., and has great industrial applicability.

1, 2 Handles 3 Center rotation fulcrum 4, 5 Applying arm 7, 8 Receiving arm 9, 10, 18, 19 Transmission rotation fulcrum 11, 12 Second stage arm 13 Second rotation fulcrum 14, 15, 20, 212, 23 Blades 16, 17 Re-folding arm 24, 25 Protective protrusions 30, 31 Arm intermediate fulcrum 40, 41 Stripper 50, 51 Pliers 60, 61 Wrench 70 Solenoid magnetic core 71 Solenoid coil 72 Motor

Claims (5)

In scissors with multiple stages of teco lever, the rotation axis of the arm or blade and the rotation axis of the folding arm are shared, and in the teco lever and the folding arm, the distance to the force point with respect to the rotation axis (rotation fulcrum) acts. Compact ultra-strong scissors that are longer than the distance to the point and have a folding arm at the folding fulcrum of the arm or blade to make the whole smaller. In the scissors of claim 1, a small ultra-strong scissors characterized in that the blades are in the front direction, the front direction, and the side direction. In the scissors of claim 1, a small ultra-strong scissors characterized by sharing one rotation axis. The scissors according to claim 1 are small and ultra-strong scissors characterized by providing a protective projection for protecting the blade and a person. A small ultra-strong tool characterized in that at least one of a pair of pliers, a stripper and a wrench is provided in place of the blade in the scissors of claim 1.

Images