JPS62240089A - Thin cissors - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to scissors mainly belonging to the category of stationery. However, the scissors according to the present invention are suitable not only for simply cutting paper, but also for cutting various tapes, fabrics including nonwoven fabrics, strings, threads, and the like.

Therefore, the present invention relates to general scissors without specific use.

Furthermore, the present invention relates to scissors that are small and thin enough to fit in the military.

[Conventional technology]

By the way, as is well known, ordinary scissors are broadly divided into so-called Western scissors and Japanese scissors.

The former type of scissors has two blades 1, as illustrated in Fig. 10.
．． 2 are pivotally connected by a support shaft 3 in a state where they intersect with each other,
The center of the spindle has an X-shaped structure corresponding to the fulcrum S, and the force point for applying the force necessary for cutting (arrow F1 in the figure) is located behind the fulcrum S, and the point where the force required for cutting is applied (arrow F2 in the figure) is located behind the fulcrum S. ) are located in front of the fulcrum, respectively.

On the other hand, the latter type of Japanese scissors, as illustrated in Figure 11,
The two continuous blades 1° and 2° are approximately parallel to each other at 3° at the rear end, forming a U-shaped structure with the center of the rear end corresponding to the fulcrum S, and the force necessary for cutting (in the figure) The point of force to apply the actual cutting force (F1 arrow in the figure) is in front of the fulcrum S.
2 arrows) are located near the above-mentioned points of force. Therefore, these two types of scissors differ primarily in that the positional relationship between the point of force and the point of action relative to the fulcrum is completely reversed.

Furthermore, in the case of scissors, since it is necessary to easily open the once closed blade edges 1a and 2a, the gripping portions 1b and 2b corresponding to the points of force of the crossed double-edged blades 1 and 2 are formed in an annular shape. In other words, the scissors are basically designed to open and close between the cutting edges by applying force in the direction of the F1 arrow and force in the direction of the counter-F1 arrow alternately to the point of force using the fingertips passed through the annular part. There is. On the other hand, in the latter type of Japanese scissors, the rear end portion 3'' of both blades 1° and 2'' is provided with spring elasticity sufficient to open the gap between the cutting edges 1a'' and 2a'', and the gripping portion 1b ',
2b' is just the ridge of the blade. In other words, with Japanese scissors, the force of the fingertips is applied only in the F1 arrow direction to the force point, and the force
, the above spring elasticity acting in the direction of the arrow opens and closes the space between the cutting edges. Therefore, these two types of scissors also differ in whether spring elasticity is used to open the space between the cutting edges.

Of course, some scissors have a spring added to open the space between the cutting edges. However, these spring-loaded scissors have rather specific uses.
These are not common scissors that the present invention is directed to.

[Problem that the invention seeks to solve]

However, both types of scissors as described above have the following problems.

The first is ease of use.

First of all, western scissors are easier to use than Japanese scissors because the state of rubbing between the cutting edges 1a and 2a is maintained by the support shaft 3, and the point of action is located away from the point of force, making it easy to see. Direction. However, when the position of the point of application moves gradually away from the fulcrum along the imaginary line 0-0 passing through the point of application and the fulcrum S as the blade edges 1a and 2a are closed together, the position of the point of effort changes. is the cutting edge 1a,
2a, while turning around the fulcrum S, gradually move away from the fulcrum along the virtual line 0-0, that is, in the opposite direction to the point of action, albeit slightly. Moving. Therefore, with scissors, the distance between the point of force and the point of application, which is far from the original, becomes further apart as the blade edges 1a and 2a are closed, so the blade tip is moved little by little in a subtle manner near the point of application. It is difficult to do, so it is not suitable for cutting work such as detailed work.

On the other hand, with Japanese scissors, the point of action is at the cutting edge 1a.

It is similar to western scissors in that it moves gradually away from the fulcrum along the imaginary line 0-0 through the point of application and the fulcrum S as the space between the 2a'' and the fulcrum S is closed, but the point of force is also Further, as the cutting edges 1a' and 2a' are closed together, they move, albeit slightly, in a direction that gradually moves away from the fulcrum S along the above-mentioned virtual line 0-0, that is, in the same direction as the above-mentioned point of action. With Japanese scissors, the point of force is always located close to the point of action, even if there is slight variation, so the cutting edge can be moved little by little in the vicinity of the point of action, making it possible to perform fine cuts such as craft work. However, with Japanese scissors, a part of the force F1 applied to the force point is canceled out by the spring elasticity acting in the opposite direction, which is a waste, and it is surprisingly strong when cutting. There is an inconvenience that force is required, and while care is taken to maintain the state of friction between the cutting edges 1a' and 2a', the necessary force must be applied to the point of force.

Therefore, these Japanese scissors require some skill to use, and are difficult to use until you get used to them.

Incidentally, in the case of spring-equipped scissors, a part of the force F1 applied to the force point is canceled out by the spring elasticity acting in the opposite direction, which is a similar waste.

The second problem is that apart from reducing the overall size, it is difficult to reduce the thickness.

In other words, in the case of Western scissors, it is necessary to make the gripping parts 1b and 2b in the latter half of the blade body, especially the gripping parts 1b and 2b for passing the fingertips, have a thickness that is perpendicular to the plane of the paper in Figure 10. Regarding the first half, the cutting edge 1a at the time of cutting.

In order to reliably maintain the rubbing state between 2a and to ensure bending strength that prevents the cutting edge from escaping in the direction perpendicular to the plane of the drawing, it is necessary to make it considerably thick. In addition, when using Japanese scissors, the cutting edges 1a' and 2a' are used when cutting.
Since the rubbing condition between the blades can be maintained to the extent that it can be achieved by fingertip operation, in theory it should be possible to make the thickness of the first half of the blade considerably thinner, but for the latter half including the fulcrum S, the rear end In order to provide sufficient spring elasticity to the 3° portion, it is necessary to provide a considerable width in the direction perpendicular to the paper plane of FIG. Therefore, with these two types of scissors, it is actually difficult to extremely reduce the dimension in the direction parallel to the center of the spindle to make the overall shape thinner.

Therefore, the present invention aims to provide a completely new pair of scissors by addressing the above-mentioned conventional problems.

That is, the first object of the present invention is to take advantage of both the advantages of Western scissors and Japanese scissors to improve the ease of use in cutting operations, including fine work.

A second object of the present invention is to reduce the overall shape of the scissors.

In addition, a third object of the present invention, in conjunction with the second object, is to realize scissors that can also be used as a cutter knife.

[Means for solving problems]

The technical means of the present invention necessary to achieve each of the above objects are shown in FIGS. 1 to 3, which correspond to embodiments thereof.

That is, the scissors according to this means is composed of a first plate-shaped blade 11 and a second plate-shaped blade 21. Each of these plate-shaped blades has a larger vertical width and a smaller thickness than the blades of conventional scissors, and thus each has a thin plate shape with a wide side surface area.

The first plate-shaped blade 11 described above has a side surface shape that is approximately rectangular or square, which is slightly elongated in the front-rear direction, and the second
The plate-shaped blade body 21 has a side surface shape that is approximately fan-shaped.

The front part of the first plate-shaped blade 11 is divided into an upper jaw 13 and a lower W14 by a deep forward-facing opening 12, and an upwardly directed cutting edge 15 is provided on the upper edge of the lower v414 facing the upper jaw 13. , is formed to be long in the front-rear direction over the entire length of the opening 12 from the mouth end to the innermost end.

The second plate-shaped blade 21 is located at a point 22 corresponding to the key point of the fan when viewed from the side surface shape, and is further slightly rearward from the innermost end of the opening 12 in the first plate-shaped blade 11. It is pivotally mounted by a support shaft 31. Therefore, this plate-shaped blade body 21 is in a state of being superimposed on the plate-shaped blade body 11, and the supporting shaft 3
It can be freely rotated around 1.

On the front edge of the second plate-shaped blade body 21, a downward cutting edge 24 extending from near a point 22 corresponding to the key point of the fan to an arcuate outer peripheral edge 23 is formed to extend substantially along the turning radius direction. ing. This cutting edge 24 is the cutting edge 1 of the first plate-shaped blade body.
5 and intersect with the cutting edge, and are in a position to be rubbed against each other as the plate-shaped blade body 21 rotates.

Note that the peripheral edge 16 in the range from the front edge to the upper edge of the upper W13 in the first plate-shaped blade 11 may protrude from the arc-shaped outer peripheral edge 23 of the second plate-shaped blade 21 when viewed from the side. Without,
Further, the second plate-shaped blade body 21 is provided with some kind of anti-slip protection against the fingertips, as shown in the figure as, for example, a concavo-convex portion 25 on the outer peripheral edge 23.

[For production]

The scissors constructed as described above are used in the following manner.

First, the rear half 17 of the first plate-shaped blade 11 is held in the palm of the hand with the remaining four fingers excluding the toga finger, and
Place the tip of your toga finger on the non-slip 25 of the second plate-shaped blade 21 and press lightly. In this state, when the toga finger is bent and stretched and the fingertip is moved back and forth, the second plate-shaped blade body 21 uses the support shaft 31 as the fulcrum S, and the blade edge 24 of the second plate-shaped blade body 21 connects with the blade edge 15 of the first plate-shaped blade body 11. It rotates and moves to open and close the opening 12 while rubbing against each other. Note that the first plate-shaped blade 11 in this case is
While it is being held as described above, it hardly moves and can be seen as standing still.

Therefore, the second plate-shaped blade 21 is rotated backward so as to fully open the opening 12, and the object to be cut, such as paper, is moved through the opening 1.
2, and apply the force F required for cutting to the second plate-shaped blade 21 with the tip of your toga finger. The force Fl necessary for this cutting is applied to the second plate-shaped blade 21 as a rotational force in a direction to rotate it forward as shown by the arrow in FIG. Then, the cutting edge 24 of the second plate-shaped blade 21 touches the first plate-shaped blade 1.
The object to be cut, which has been inserted into the opening 12, is cut by these two blade edges 24 and 15 while being rubbed together by the two blade edges 24 and 15 to close the gap between the two blades.

The rubbing state of the blade edges 24 and 15 at the time of cutting is maintained by the support shaft 31 as in conventional Western scissors, but as with Japanese scissors, this state can be maintained and further strengthened by operating the toga fingertips. is also possible. Furthermore, as for the second plate-shaped blade 21, since it is a thin plate, it may cause bending deformation.
This concern is completely unnecessary because the blade overlaps the first plate-shaped blade 11, particularly the upper jaw 13, is guided and reinforced. Therefore, the cutting edge 24 during the cutting operation does not escape from the cutting edge 15 in the direction perpendicular to the paper plane of FIG. 1, and both work together to reliably cut the object to be cut according to the user's intention.

On the other hand, the point of action where the actual cutting force F2 acts during this cutting is as the two blade edges 24 and 15 are closed together.
It moves forward along the blade edge 15 that is seen to be stationary, and is the same as conventional scissors (gradually moving away from the fulcrum S. On the other hand, the position of the force point where the force F required for cutting is applied is Although it is always equidistant from the fulcrum S, unlike conventional scissors, as the second plate-shaped blade body 21 rotates, it moves forward as if chasing the moving point of action mentioned above. The scissors according to the present invention are similar to western scissors in that the support shaft 31 is the fulcrum S, but the cutting action is similar to that of Japanese scissors. , rather similar to Japanese scissors.

Note that the scissors according to the present invention can be used by rotating and holding the second plate-shaped blade 21 until the cutting edge 24 thereof protrudes below the lower jaw 14 of the first plate-shaped blade 11. , it can be used as a cutter knife, for example, the cutting edge 2
By pressing the tip of the blade 4 against the surface 41 to be cut and then retreating as shown in FIG. 4, the surface can be cut, and the cutting edge 24 can also be used to sharpen a pencil.

〔Example〕

Next, some specific embodiments of the present invention will be described with reference to the drawings. However, since the overall configuration common to each of these embodiments overlaps with the configuration of the invention described above,
Repeated explanation will be omitted.

First, in FIGS. 1 to 9, the cutting edge 24 of the second plate-shaped blade 21 is formed in a convex arc shape. This cutting edge 24 may be linear like the cutting edge 15 of the first plate-shaped blade 11, but it is better to have a convex arc shape in this way so that the intersection angle with the cutting edge 15 is between the two blades. A large amount of space can be secured until the end of closing, making cutting work easier.

Further, the lower edge 18 of the lower jaw 14 of the first plate-shaped blade 11 is sloped so as to narrow the width of the lower jaw toward the front. For this reason, when used as a cutter knife, the turning angle of the second plate-shaped blade 21 necessary to make the cutting edge 24 protrude below the mandible is reduced, and the cutting edge 24 is shown in FIG. Thus, the second plate blade 11 can be made substantially parallel to the lower edge of the second half 17 of the first plate-shaped blade 11, thereby facilitating use as a cutter knife.

Next, in FIGS. 1 to 5, the anti-slip portion of the fingertip on the second plate-shaped blade 21 is an uneven portion 25 formed on the arcuate outer peripheral edge 23. Therefore, the second plate-shaped blade 21 can be easily rotated and reciprocated with the tip of a toga finger placed on the non-slip surface from above.

However, in FIGS. 1 to 4, the range in which the concavo-convex portion 25 moves as the second plate-shaped blade body 21 is rotated is
As shown by reference numeral 19, the upper jaw peripheral edge 16 of the plate-shaped blade 11 is cut down to a position corresponding to the inner side of the above-mentioned uneven portion 25. The uneven portion can prevent the toga tip from slipping without protruding further outward than the second plate-shaped blade body 21.
does not cause the shape to expand.

On the other hand, in FIG. 5, the above-mentioned uneven portion 25 protrudes outward from the arcuate outer peripheral edge 23 and the upper jaw peripheral edge 16 of the first plate-shaped blade 11. In contrast, in FIG. Therefore, it is possible to naturally prevent the tip of the toga finger from slipping due to the uneven portion 25, and the maxillary periphery 16
The above-mentioned cutting 19 can be omitted.

On the other hand, in FIG. 6, the second plate-shaped blade 21 is provided with a window 26 formed in the side of the blade to prevent the fingertip from slipping, and in FIG. It is an uneven surface 27 formed on the outer surface of the blade body 21, and in FIG.
The anti-slip material 28 is attached to the outer surface of the blade and has a coefficient of friction greater than that of the outer surface of the blade. These cleats 26, 27, 28 eliminate the need for the above-mentioned irregularities 25 and cuts 19 in the upper part of each blade 11, 21, simplifying the shape of this part. Further, the window 26 has an uneven surface 2
Although it is easier to form than scissors 7 and helps reduce the overall weight of the scissors, it is easy for dirt to accumulate therein, and the dirt is removed from the double-edged body 11.2.
Easy to enter into 1 room. The drawback of such a window 26 is that the uneven surface 2
7 is excluded. Furthermore, the anti-slip material 28 is easier to apply than forming the window 26 or the uneven surface 27;
Moreover, the beauty of the scissors as a whole can be improved by the color itself.

However, in each of the embodiments shown in FIGS. 6 to 8 above, the tip of the toga finger is
window 26. from the outside of the plate-shaped blade body 21. The blade body 21 is pressed against the uneven surface 27 or the anti-slip material 28, and is bent and stretched in the front and rear directions in this position to rotate the blade body 21. Therefore, the second plate-shaped blade 21 rubs against the first plate-shaped blade 11 more strongly than in the above-described embodiments in which the anti-slip portion is the uneven portion 25, so that the blade edge 24 during cutting is rubbed against the first plate-shaped blade 11 more strongly. This has the advantage of being able to more reliably prevent escape. However, in each of these embodiments, the combination of the double blades 11.21 must match the dominant hand of the user. That is, in each of the embodiments shown in FIGS. 1 to 5, the first plate-shaped blade 11 and the second
The combination with the plate-shaped blade body 21 is determined based on whether the blade will be used with the left or right hand, and therefore the combinations shown in the figures are for right-hand use according to conventional practice.
However, there is no particular disadvantage in using these with the left hand. On the other hand, in each of the embodiments shown in FIGS. 6 to 8, the combination of the double-edged blades 11 and 21 must be clearly distinguished depending on whether it is used with the left or right hand, and the combination is different from conventional practice. It will be the opposite. That is, the combinations of double-edged blades 11 and 21 shown in FIGS. 6 to 8 are all suitable for right-handed use, and are difficult to use with the left hand.

In addition, in FIGS. 1 to 8, the first plate-shaped blade 11 is
It is formed to be longer rearward than the plate-shaped blade body 21, and its rear half portion 17 is used as a gripping portion. Therefore, there is no need to separately form an independent gripping part.

In contrast, in FIG. 9, the rear part of the first plate-shaped blade 11 is formed as short as or slightly longer than the second plate-shaped blade 21, and the rear end of the former has a double-blade body. A =-shaped protective frame 51 is provided that can surround 11.21 from three sides, front and top. This protective frame 51 is pivotally attached to the upper and lower rear portions of the first plate-shaped blade 11 at the tips of both vertically parallel arms 52 and 53, respectively, and is changed from the position shown by the solid line in the figure to the position shown by the chain line. It can be freely rotated to any position. Therefore, according to this embodiment, when the protective frame 51 is in the position shown by the solid line, the frame can be used as a gripping part of sufficient length, and when the protective frame 51 is in the position shown by the chain line, the entire length of the scissors can be used. In addition to making it possible to significantly shorten the
Since the front end portion of No. 1.21 does not come into contact with other objects, it can be protected from collision.

By the way, in the scissors according to the present invention, if price is the only consideration, it would be appropriate to form both the first and second plate-shaped blade bodies 11.21 from steel.

However, if both of the blade bodies 11.21 are made of ceramic material, the sharpness of the cutting edge 15.24 can be maintained for a long time, and the weight of the scissors as a whole can be reduced considerably.

Furthermore, if only one of the double-edged blades 11 and 21 is made of ceramic material and the other made of steel, a significant increase in price can be suppressed, and the cutting edge on the steel side can be renewed by rubbing the two together. Furthermore, the brittleness of ceramic materials can be protected by steel materials.

Similarly, if both the double-edged blades 11 and 21 are made of a titanium-based alloy material, a light and strong scissors can be realized, and if only one of them is made of the alloy material, a rise in price can be suppressed.

Furthermore, if one of the double-edged blades 11.21 is made of ceramic material and the other is made of titanium-based alloy material, it will be the best combination of materials, and a lightweight and robust scissors with long lasting sharpness will be obtained. .

In addition, if only the cutting edge portions of the double-edged blades 11 and 21 are formed of ceramic material tips or titanium-based alloy material tips, the price increase due to these materials can be slightly suppressed. If these tips are used only on the cutting edge of the blade on one side, the price increase can be further reduced.

〔Effect of the invention〕

According to the present invention as described above, structurally, the advantages of Western scissors are utilized, and functionally, the advantages of Japanese scissors are utilized, so that the scissors are easy to handle and suitable for detailed work. , you can get scissors that are easy to use.

Furthermore, the scissors obtained according to the present invention do not require an annular gripping portion as in conventional Western scissors or a spring elasticity as in Japanese scissors. Therefore, according to the present invention,
The overall thickness of the scissors can be easily reduced, and for example, it is also possible to obtain card-shaped scissors with an overall thickness of 2 cranes or less. Such thin scissors are highly portable and can be handled in the same way as a cash card or member's card, and can also be inserted between the pages of a book as a substitute for scissors.

However, according to the present invention, in order to make it possible to use the power of scissors as a jitter knife, in addition to the above-mentioned excellent portability,
It is also expected that the range of applications for scissors will be greatly expanded.

[Brief explanation of drawings]

Fig. 1 is a left side view showing an embodiment of the present invention, Fig. 2 is a right side view thereof, Fig. 3 is an enlarged sectional view taken along line I-1 in Fig. 2, and Fig. 4 is a Fig. 5 is a left side view showing an example of use, Fig. 5 is a right side view showing a different embodiment, Figs. 6.7 and 8.9 are right side views showing further different embodiments, Fig. 10.11
The figures are left side views showing different conventional examples. 11--First plate-shaped blade, 12--Opening, 13-- Upper jaw, 14-- Lower jaw, 15-- Cutting edge, 16- Periphery of upper jaw, 17- Gripping part, 18-- Lower edge of lower jaw, 19-- Scraping of upper jaw periphery, 21-- Second plate-shaped blade body, 22-- Point corresponding to the key point of fan, 23- Arc-shaped outer periphery , 24.--Blade edge, 25.--Uneven part (slip prevention), 2
6.-window (non-slip), 27--uneven surface (non-slip)
, 28--Anti-slip material (anti-slip), 31--Spindle, 41--Surface to be cut, 51--Protective frame, 52--Upper arm, 53--Lower arm, F,-・-The sword required for cutting applied to the point of force, F2--The actual cutting blade that acts on the point of application, S...-Fulcrum patent applicant Ars Knife Manufacturing Co., Ltd. No. 1 Cause Figure 4

Claims (20)

[Claims] (1) Consisting of first and second plate-shaped blades each having a thin plate shape with a wide side surface area, the first plate-shaped blade body has a rectangular or square side surface shape that is slightly elongated in the front-rear direction, The second plate-shaped blade has a side shape that is almost fan-shaped, and the front part of the first plate-shaped blade is divided into the upper jaw and the lower jaw by a deep forward-facing opening. On the upper edge facing the upper jaw, a long upward cutting edge is formed in the front-rear direction extending from the mouth end to the innermost end of the opening, and the second plate-shaped blade body has a fan-like shape when viewed from the side surface. It is pivotally attached to a point slightly further rearward of the innermost end of the opening of the first plate-shaped blade body at a point corresponding to the pivot point, and in a state where it is overlapped with the first plate-shaped blade body, the pivot The second plate-shaped blade body is rotatable around the landing point, and a long downward cutting edge extending from near the pivot point to the arcuate outer periphery is formed on the front edge of the second plate-shaped blade body. intersects with the above-mentioned cutting edge of the first plate-shaped blade body so as to rub against each other, and furthermore, the peripheral edge of the range from the front edge to the upper edge of the above-mentioned upper jaw portion of the first plate-shaped blade body is Thin scissors characterized by not protruding from the arcuate outer peripheral edge of the second plate-shaped blade, and in addition, the second plate-shaped blade is provided with a non-slip surface against fingertips. . (2) The thin scissors described in claim 1, wherein the cutting edge of the second plate-shaped blade body is formed in a convex arc shape. (3) The lower edge of the lower jaw of the first plate-shaped blade body is sloped to narrow the width of the lower jaw toward the front. Thin scissors. (4) The thin scissors as set forth in claim 1, wherein the second plate-shaped blade body is provided with an uneven portion formed on the arcuate outer periphery to prevent the fingertip from slipping. (5) As the second plate-shaped blade body is rotated, the upper jaw periphery of the first plate-shaped blade body corresponds to the inner side of the above-mentioned concave-convex portion in the range in which the concave-convex portion of the arcuate outer periphery moves. Claim 1 characterized in that it is cut down to a position.
The thin scissors described in Items 1 and 4. (6) A patent claim characterized in that the uneven portion of the arc-shaped outer periphery of the second plate-shaped blade body protrudes from other parts of the outer periphery and the upper jaw periphery of the first plate-shaped blade body. The thin scissors described in Items 1 and 4. (7) Thin scissors according to claim 1, characterized in that the second plate-shaped blade body is provided with a window bored in the side of the blade body to prevent the fingertip from slipping. . (8) The thin blade according to claim 1, wherein the second plate-shaped blade body is provided with an uneven surface formed on the outer surface of the blade plate body to prevent the fingertip from slipping. scissors. (9) A patent claim characterized in that the anti-slip fingertip on the second plate-shaped blade is an anti-slip material that has a larger coefficient of friction than the blade and is affixed to the outer surface of the blade. Thin scissors described in item 1 of the scope. (10) Claim 1, characterized in that the first plate-shaped blade is formed longer rearward than the second plate-shaped blade, and the latter half of the former is used as a gripping part. thin scissors. (11) The rear part of the first plate-shaped blade is formed to be as short as or slightly longer than the second plate-shaped blade, and the rear end of the former has both blades attached from three sides, front and top. Can be surrounded■
2. The thin scissors according to claim 1, wherein the protective frame is pivotally mounted to be rotatable back and forth about two points above and below the rear end as fulcrums. (12) The thin scissors as set forth in claim 1, wherein the first and second plate-shaped blades are both made of ceramic material. (13) Either one of the first and second plate-shaped blade bodies,
The thin scissors according to claim 1, characterized in that the scissors are made of a ceramic material. (14) The thin scissors as set forth in claim 1, wherein the first and second plate-shaped blades are both made of a titanium-based alloy material. (15) Either one of the first and second plate-shaped blade bodies,
The thin scissors according to claim 1, characterized in that the scissors are made of a titanium-based alloy material. (16) One of the first and second plate-shaped blades is made of a ceramic material, and the other is made of a titanium-based alloy material. Thin scissors. (17) The thin scissors as set forth in claim 1, wherein the respective cutting edge portions of the first and second plate-shaped blade bodies are both formed of chips of ceramic material. (18) The thin scissors according to claim 1, wherein the cutting edge portion of one of the first and second plate-shaped blade bodies is formed of a ceramic chip. . (19) The thin blade according to claim 1, wherein the respective cutting edge portions of the first and second plate-shaped blade bodies are both formed of tips of titanium-based alloy material. scissors. (20) The thin blade according to claim 1, wherein the cutting edge portion of one of the first and second plate-shaped blade bodies is formed of a tip of a titanium-based alloy material. scissors.