JP3420446B2 - Scissors, cutter mechanism including the same, and printing apparatus including the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to scissors in which a fixed blade and a movable blade are rotatably connected by a support shaft, a cutter mechanism including the scissors, and a printing apparatus including the scissors.

[0002]

2. Description of the Related Art FIG. 10 shows conventional general scissors. The scissors 81 are each provided with a handle portion 82.
a fixed blade 82 having a and 83b and a movable blade 83
It is configured to be rotatably connected by 4. In this case, the cutting blade on the side where the support shaft 84 is fixed is the fixed blade 82, and the cutting blade on the side rotatably supported by the support shaft 84 is the movable blade 83. Therefore, the support shaft 84 is inserted from the movable blade 83 side to the fixed blade 82 side and the tip thereof is caulked to fix the fixed blade 82.
And the movable blade 83 are connected. The caulking work of the support shaft 84 not only rotatably connects the fixed blade 82 and the movable blade 83, but also enables good cutting of a symmetrical object, and the rubbing of the blades 82 and 83. The fixed blade 82 and the movable blade 83 so that the cutting torque based on them becomes appropriate.
It adjusts the contact pressure with. Therefore, the caulking work is performed by crushing the tip end of the support shaft 84 so as to widen the support shaft 8.
4 is fixed to the fixed blade 82. At this time, the support shaft 84 is fixed to the fixed blade 82 by the plastic deformation of the material forming the support shaft 84, and the caulking portion within the elastic deformation limit after deformation is fixed. An appropriate contact pressure is obtained by the spring force.

[0003]

With such conventional scissors 81, it is necessary to make a delicate adjustment in consideration of the plastic deformation and elastic deformation of the support shaft 84 during the crimping work, and therefore, the scissors of exactly the same type. However, not only is it necessary to carry out caulking work individually, automation is not possible, and there is a problem that the work itself requires skill and takes time.

The present invention has scissors capable of easily and quickly properly attaching the support shaft to the fixed blade and the movable blade in consideration of contact pressure, a cutter mechanism including the scissors, and the scissor mechanism. The purpose is to provide a printing device.

[0005]

DISCLOSURE OF THE INVENTION The scissors according to the present invention include a fixed blade and a movable blade, each of which has a handle portion and relatively rotates to perform a cutting operation, and the fixed blade and the movable blade are rotatably connected to each other. to a support shaft, fixed blades support shaft have a spring plate nut portion formed in a plurality of <br/> spring plate nut shape notched radially to the periphery of the insertion hole to be inserted , Spindle
Is the head that abuts the movable blade and the spring plate nut
And a shaft portion that is locked to a locking end of the portion .

According to this structure, when the fixed blade and the movable blade are aligned and the support shaft is inserted into the fixed blade with a predetermined pressure,
The tip portion of the support shaft is fitted into the spring plate nut portion and is locked to the spring plate nut portion in a retaining state. At that time, the contact pressure between the fixed blade and the movable blade can be automatically adjusted by adjusting the pressure that passes through the support shaft. Further, in this case, within the range of elastic deformation of the spring plate nut portion, it is possible to fix the support shaft to the fixed blade by its spring property and to maintain the contact pressure between the fixed blade and the movable blade. You can Therefore, the amount of change in the spring force can be made relatively small with respect to the amount of deformation of the spring plate nut portion, and the contact pressure can be adjusted stably. Moreover, the spring plate nut portion does not slightly curve outward and contact the movable blade. Therefore, the contact area between the fixed blade and the movable blade around the support shaft becomes small, and the loss of the cutting torque due to the friction of this portion can be reduced. That is, the cutting torque (force required for opening and closing the scissors) can be reduced without impairing the cutting performance. The fixed blade here does not mean the cutting blade fixed to the frame or the like, but the cutting blade on the side where the support shaft is fixed.

In this case, it is preferable that each of the fixed blade and the movable blade is made of a thin plate hardened material.

According to this construction, it is possible to simply manufacture the fixed blade and the movable blade without forming the fixed blade and the movable blade by punching or the like and then subjecting them to quenching or the like. Further, since the spring plate nut portion can be provided with a sufficient spring property, the contact pressure can be adjusted more stably.

In these cases, the shaft portion of the support shaft is formed with an annular groove in which the locking end of the spring plate nut portion is locked, or the locking end of the spring plate nut portion is locked. It is preferable that an external thread is formed.

According to this structure, if the annular groove is formed in consideration of the amount of flexure (spring force) of the spring plate nut portion, even if the engaging end of the peripheral portion is engaged with the annular groove. By pressing the support shaft, a desired contact pressure can be obtained between the fixed blade and the movable blade. Further, the annular groove makes it more secure to prevent the spindle from coming off. Similarly, if a male screw is formed on the shaft portion of the support shaft, the support shaft can be reliably prevented from coming off, and the contact pressure can be finely adjusted even after the support shaft is mounted. That is, the forward / reverse rotation of the support shaft enables fine adjustment of the strength of the contact pressure.

In these cases, instead of the spring plate nut portion,
That it comprises a spring plate nut fixed to the outer surface of the fixed blade
Are preferred.

If a spring plate nut is provided as a separate member as in this construction, the number of parts increases, but
The contact pressure can be adjusted stably even for thick fixed blades and movable blades for which it is difficult to utilize the springiness of the peripheral portion of the insertion hole through which the support shaft is inserted. Further, the contact pressure can be easily and freely adjusted by selecting the spring plate nut.

In these cases, it is preferable that the fixed blade and the movable blade are press-formed products formed by punching a plate material.

According to this structure, the outer shape of the fixed blade and the movable blade, including the insertion hole for the support shaft and the spring plate nut portion, is punched by a punch, and the blade surface is punched (cut) diagonally.
Formed. Therefore, the fixed blade and the movable blade can be formed very easily in a short time, and the cost of the scissors itself can be reduced together with the mounting of the support shaft.

On the other hand, the cutter mechanism of the present invention is defined by claim 1.
The scissors according to any one of 1 to 6 and cutting operation means that engages at least one of both handle parts and cuts the fixed blade and the movable blade via the handle parts.

According to this structure, by using the scissors according to any one of claims 1 to 6, the force required for the cutting operation (cutting torque) and the force required for the non-cutting operation of the cutting operation means are made constant. The cutting torque itself can be reduced without impairing the cutting performance. Also, the scissors can be easily manufactured. Therefore, not only can the advantages of the scissors that exhibit stable cutting performance for a long period of time as a cutter be utilized, but also the structure can be simplified and the cost can be reduced.

In this case, the fixed blade and the movable blade are formed so as to be bent around the support shaft in the rotation plane.
preferable.

According to this structure, the scissors can be made compact, so that the scissors can be collectively arranged and the cutter mechanism itself can be made compact.

Further, the printing apparatus of the present invention comprises a cutter mechanism for cutting the tape-shaped member into a predetermined length, a printing means for performing desired printing on the tape-shaped member, and a printing means. Tape feeding means for feeding the tape-shaped member printed by the above to face the cutter mechanism.

According to this construction, the cutter mechanism can be constructed at low cost and compactly, so that the printing apparatus itself can be constructed at low cost and compactly. Further, since the cutter mechanism exhibits stable cutting performance for a long period of time, the reliability of the printing apparatus itself can be improved.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION A scissor, a cutter mechanism and a printing device according to an embodiment of the present invention will be described below with reference to the accompanying drawings. This tape printing device prints (prints) desired characters or figures on a printing tape which is a tape-shaped member, and cuts the printed printing tape into a predetermined length to form a label-shaped printing tape. It is what constitutes.

FIG. 1 shows a plan view of the tape printer. As shown in the figure, the tape printer 1 includes a main body case 2 for accommodating various parts, an input unit 4 having a plurality of input keys 3 for inputting print information, and an input unit 4. A display unit 5 for displaying a character string input from and other information, and an opening / closing lid 6 configured to be openable / closable are provided. A tape cartridge 7 containing a printing tape T is mounted inside the opening / closing lid 6, and the mounting of the tape cartridge 7 can be confirmed from the outside through a confirmation window 8 formed on the opening / closing lid 6. Has become.

Further, inside the opening / closing lid 6, a print head 9 forming a printing means is located in the vicinity of the tape cartridge 7, and the tape is fed to the tape cartridge 7 so as to face the print head 9. Platen rollers 10 constituting the means are arranged respectively. The printing tape T is delivered from the tape cartridge 7 by the platen roller 10 and is further delivered to the outside of the apparatus while being printed by the print head 9. On the other hand, on the left side of the opening / closing lid 6, a tape cutting push button 12 for activating a cutter mechanism 11 which will be described later is arranged, and when the feeding operation of the printing tape T is stopped, the tape cutting push button is pressed. When the button 12 is pressed, the printing tape T is cut into a predetermined length (printed portion + margin). Further, on the left side portion of the main body case 2, adjacent to the cutter mechanism 11, a tape discharge port 1 for sending the printing tape T to the outside of the apparatus.
3 is formed.

In this tape printer 1, first, the opening / closing lid 6 is opened, the tape cartridge 7 is mounted in the main body case 2, and the opening / closing lid 6 is closed. Next, the power switch (not shown) provided on the right side of the main body case 2 is operated to turn on the power, and the character to be printed is input from the input unit 4. If necessary, the input character string is converted into kana-kanji characters, and when a predetermined key is operated to instruct printing, the thermal transfer type print head 9 prints on the printing tape T fed from the tape cartridge 7. In parallel with this printing, the printed printing tape T is sent by the platen roller 10 and sent out from the tape discharge port 13 to the outside. Then, when the printing is completed, the feeding of the printing tape T is stopped. Here, when the tape cutting push button 12 is pressed, the printing tape T is cut into a predetermined length and ejected from the tape ejection port 13.

The printing tape T is an adhesive tape with a so-called release paper, the surface of which is processed so that the ink can be deposited well, and the removable release tape is attached to the back surface coated with the adhesive material. There is. Therefore, if the peeling tape of the cut printing tape T is peeled off, the printing tape T on which characters or symbols are printed can be attached as a label to a desired object. Further, in the tape printer 1, various printing tapes T having tape widths of 6 mm, 9 mm, 12 mm, 18 mm, etc. are prepared, and these various printing tapes T having different tape widths are
The tape cartridge 7 is housed in a wound state,
Offered individually.

As shown in FIGS. 2 and 3, the cutter mechanism 11 includes scissors 14 bent in an "L" shape, and a cutting operation means 15 for cutting the scissors 14. The scissors 14 include a fixed blade 21 and a movable blade 22 formed in a substantially "L" shape as a whole, and a support shaft 23 that rotatably connects the fixed blade 21 and the movable blade 22 to each other at an intermediate bent portion. It has and. The fixed blade 21 includes a blade portion 21 that extends upward in a substantially vertical direction with the support shaft 23 interposed therebetween.
a and a handle portion 21b extending in a substantially horizontal direction are integrally formed, and similarly, the movable blade 22 extends in a substantially horizontal direction with a blade portion 22a extending upward in a substantially vertical direction with a support shaft 23 interposed therebetween. It is integrally formed with the handle portion 22b.

In this case, the fixed blade 21 has the handle portion 2 thereof.
The movable blade 2 is fixed to the chassis 16 with 1b (see FIG. 3).
2 is connected to the cutting operation means 15 by its handle portion 22b (see FIG. 2). The scissors 14 are arranged in a narrow gap between the tape cartridge 7 and the side plate of the main body case 2, and the blade 21a of the fixed blade 21 serves as the printing tape T sent from the tape cartridge 7 to the tape discharge port 13. It is arranged so as to face (FIGS. 1 and 3).
reference).

The cutting operation means 15 is, as shown in FIG.
The tape cutting push button 12, the engaging pin 17 protruding from the side surface of the tape cutting push button 12, and the spring 18 for urging the movable blade 22 to rotate in the non-cutting direction.
The tape cutting push button 12 is attached to the main body case 2 so as to be slidable in the vertical direction, and the tip of the engaging pin 17 is a long groove 31 formed at the end of the handle portion 22b of the movable blade 22.
Is engaged with. On the other hand, the spring 18 is composed of a torsion coil spring or the like, one end of which is attached to the main body case 2 and the other end of which is attached to the lower surface of the handle portion 22b of the movable blade 22. When the tape cutting push button 12 is pushed, the movable blade 22 rotates in the cutting direction via the engagement pin 17, and the movable blade 22 rubs against the fixed blade 21 to perform the cutting operation. Then, when the tape cutting push button 12 is released, the movable blade 22 is rotated in the non-cutting direction by the spring 18, and the tape cutting push button 12 is returned to the standby position via the engaging pin 17.

As shown in FIGS. 4 and 5, the fixed blade 21
Further, each blade 21a, 22a of the movable blade 22 is formed with a notch 33 cut into the ridge side at the base of the blade tip 32 side, and between the notch 33 and the tip, the blade 32 is parallel to the blade tip 32. A surface (cutting blade) 34 is formed. Further, in each of the blades 21a and 22a, between the cutout portion 33 and the cutting edge, a bent portion 35 is formed by bending a portion of the blade edge 32 side including the blade surface 34 toward the opposing blade side by a small angle. There is. The bending width of the bent portion 35 is formed so as to increase from the cutout portion 33 toward the cutting edge at an angle of α with the cutting edge 32. That is, the bent portion 35 is bent in the width direction with respect to the blades (blade bodies) 21a and 22a at an angle β shown in the drawing (see FIG. 6), and is expanded in the longitudinal direction with respect to the cutting edge 32 at an angle α shown. Has been formed. For this reason, the cutting edge side with respect to the base side largely projects toward the opposing blade side.

Thus, the fixed blade 21 and the movable blade 22
By providing the bent portion 35 on each of the blades 21a and 22a, it is possible to easily provide each of the blades 21a and 22a with a clearance angle generally referred to as a cutting tool, that is, similar to the "back clearance" in the scissors 14. This allows
The cutting performance of the scissors 14 is improved, and in the cutting operation in which the blade edges 32, 32 of the fixed blade 21 and the movable blade 22 are in contact with each other, the backs 36, 36 are separated from each other, and a printing tape coated with an adhesive material. Even if T is cut, the adhesive material does not stick to the fixed blade 21 and the movable blade 22. For example, when the printing tape T is cut (blade closing operation), even if the adhesive material wraps around the back 36 of the fixed blade 21 (movable blade 22) so as to stick out, the adhesive material moves to the movable blade 22.
(Fixed blade 21) is not pressed strongly,
The adhesive material does not adhere to the back 36 of the fixed blade 21. Even when the adhesive material is weakly attached, it is peeled off while being attached to the printing tape T during the non-cutting operation (opening operation of the blade) or when removing the cut printing tape T.

Therefore, the fixed blade 21 and the movable blade 22
Adhesive material adheres and deposits on the back 36 of the fixed blade 21 and the movable blade 2
2 can be prevented from sticking to each other, resulting in defective cutting operation. In particular, when the scissors 14 are mounted on the device as in the embodiment, it is impossible for the user to disassemble the device and remove the adhered adhesive material, and the scissors (cutter mechanism 11) 14 of the embodiment Is extremely useful for mounting on a device.

The "back plow" in this case is scissors 1
Unlike the original "back piling" in which the back 36 of 4 is ground, not only can it be easily processed, but the blades 21a and 22a can be bent to bend the blades 21a and 22a.
It acts to increase the rigidity of a itself. Therefore, the blades 21a and 22a can be configured to be relatively thin without sacrificing the cutting performance. Specifically, a hardened material that can be pressed (for example, 0.8 mm
The fixed blade 21 and the movable blade 22 can be configured by using (thickness or less). That is, the fixed blade 21 and the movable blade 2
The outer shape of 2 is formed by press punching, and each blade surface 34 is also formed by press punching (cutting) diagonally, and the bent portion 35 is press bent before and after the formation of the blade surface 34. Form. In such a case, the quenching (heat treatment) step after assembly can be omitted, and the fixed blade 21 and the movable blade 22 can be made extremely easily by pressing. Of course, it is needless to say that after the outer shapes of the fixed blade 21 and the movable blade 22 are punched out, only the blade surface 34 may be formed by polishing finish. Therefore,
It is possible to configure 14 compact and low-cost scissors (cutter mechanism 11), and thus promote cost reduction and miniaturization of the tape printer 1.

By the way, in general scissors (see FIG. 10), when cutting an object while making point contact between the blade edges of the fixed blade and the movable blade toward the cutting edge, the contact point of the blade edge is moved from the spindle. The farther the blades are from each other, the more the fixed blades and the movable blades are likely to bend, and defective cutting is more likely to occur. Therefore, so that the contact pressure between the blades increases with the distance from the spindle,
A fixed blade and a movable blade that are slightly curved in advance in a direction that is opposite to each other, and a "twist" in which the blade edge side is twisted toward the opposing blade side with respect to the ridge side. Is provided.

On the other hand, in this embodiment, the bent portion 3
5 is formed so as to be widened at an angle α in the drawing with respect to the cutting edge 32, and the cutting edge side with respect to the base side is projected more largely toward the opposing blade side. It becomes larger as it goes away from the fixed blade 21 and the movable blade 22, and the fixed blade 21 and the movable blade 22 can be provided with functions equivalent to those of “sledding” and “torsion”. This allows the blade 21
The fixed blade 21 and the movable blade 22 can be easily manufactured by simply forming the bent portions 35 on the a and 22a without the need for performing bending and twisting on the blades 21a and 22a. By providing the notch 33 in the blades 21a and 22a, the bent portion 35 can be easily processed and the supporting shaft 23 side is not affected by the bending.

Next, referring to FIGS. 5 and 7, the support shaft 2
The structure around three parts will be described. The support shaft 23 includes a head portion 41 and a shaft portion 42, and the shaft portion 42 is used to insert the through hole 3 of the movable blade 22.
It is fixed to the fixed blade 21 in a state in which it is inserted into 7. That is, the movable blade 22 is rotatably sandwiched between the head portion 41 of the support shaft 23 and the fixed blade 21 via the shaft portion 42, and the fixed blade 21 and the movable blade are held by this scissoring force. 22
Maintains contact pressure with. The support shaft 23 has a screw structure, and the head 41 has a tool groove 43 for a driver.
Is formed, and the shaft portion 42 is formed with a male screw.

On the other hand, a spring plate nut portion 38 is formed on the peripheral portion of the insertion hole 37 of the fixed blade 21 through which the support shaft 23 is inserted. The spring plate nut portion 38 is formed into a spring plate nut shape by radially making a plurality of cuts in the peripheral portion from the insertion hole 37, and as shown in FIG.
When 3 is press-fitted, the support shaft 23 is inserted so as to push the spring plate nut portion 38 outward, and the support shaft 23 is fixed to the fixed blade 21. That is, the locking end of the spring plate nut portion 38 falls into (fits into) the thread groove of the male screw formed in the shaft portion 42 of the support shaft 23, and the support shaft 23 is moved by the spring force of the spring plate nut portion 38. It is strongly clamped in the retaining state. In this case, the support shaft 23 is press-fitted in consideration of the contact pressure between the fixed blade 21 and the movable blade 22, but if fine adjustment of the contact pressure is finally required, the support shaft 23 should be rotated in the forward and reverse directions. To adjust. If fine adjustment of the contact pressure is not required, the support shaft 23
Instead of the male screw, a single or multiple annular groove may be formed on the shaft portion. However, unless the material of the support shaft 23 is extremely hard, it is not necessary to form the male screw or the annular groove.

Thus, the fixed blade 21 for receiving the support shaft 23
Since the spring plate nut portion 38 is formed in the insertion hole 37 portion of the scissors 14, the scissors 14 can be assembled by simply pressing the support shaft 23 into the fixed blade 21 and the movable blade 22 that are aligned and set at a predetermined pressure. And fixed blade 21 and movable blade 22
It is possible to simultaneously adjust the contact pressure with. In this case, unlike the conventional scissors 14 in which the support shaft 23 is caulked and incorporated, the support shaft 23 is attached to the fixed blade 21 and the contact pressure is adjusted by the spring force of the spring plate nut portion 38. Therefore, the contact pressure can be mechanically and easily adjusted without requiring skill, and the support shaft 23 can be prevented from loosening (stumbling).

Therefore, it is possible to mass-produce scissors (cutter mechanism 11) 14 whose cutting performance lasts for a long time, and which has stable cutting performance.
1) 14 can be manufactured at low cost. Therefore, the cost of the tape printer 1 can be reduced and the durability can be improved.

Next, a second embodiment of scissors according to the present invention will be described with reference to FIG. The scissors 19 are general Western scissors, and the fixed blades 51 and the movable blades 52 intersecting each other in an “X” shape, and the fixed blades 51 and the movable blades 52 are rotatably connected to each other at an intermediate portion thereof. And a support shaft 53 for rotating. The fixed blade 51 and the movable blade 52 are
Similar to the first embodiment, the blade portions 51a and 52a and the handle portions 51b and 52b are integrally formed. The handlebars 51b and 52b have grip handles 54,
54 is attached.

Then, similarly to the first embodiment, the fixed blade 5
1 and the respective blades 51a, 52a of the movable blade 52,
A notch portion 63 is formed in the base portion on the side of the blade tip 62, and a blade surface (cutting blade) 64 is formed in parallel with the blade tip 62 between the notch portion 63 and the tip. In addition, each blade 51
A bent portion 65 is formed between the cutout portion 63 and the cut point in each of the a and 52a. The bent width of the bent portion 65 is formed such that the bending width forms an angle of α with the blade edge 62 in the drawing. ing. That is, the bent portion 65 is
Shown β for blades (blade body) 51a, 52a
Is bent at an angle of (see FIG. 9), and in the longitudinal direction,
The blade 62 is formed to be widened at an angle α in the figure. Similarly, a spring plate nut portion 68 is formed in the peripheral edge portion of the insertion hole 67 of the fixed blade 51 through which the support shaft 53 is inserted, and the support shaft 53 is formed.
A male screw is formed on the shaft portion 72 of the. The support shaft 53 is inserted into the movable blade 52 and press-fitted into the fixed blade 51, and is fixed to the spring plate nut portion 68 in a state where it is not pulled out.

In the scissors 19 like this, similar to the scissors 14 of the first embodiment, a bent portion 65 is provided on the fixed blade 51 and the movable blade 52, so that a thing similar to "back lining" can be easily constructed. can do. As a result, the cutting performance of the scissors 19 is improved, and even when the tape or sheet coated with the adhesive material is cut, the adhesive material does not stick to the fixed blade 51 and the movable blade 52, and the adhesive tape cutting It becomes extremely useful as the scissors 19.

Further, since the bent portion 65 is formed so as to be widened with respect to the cutting edge 62 at an angle α in the figure, the fixed blade 51 and the movable blade 52 should have the same functions as "sledding" and "twisting". In addition, the blades 51a and 52a can be made relatively thin. Moreover, the fixed blade 51 and the movable blade 52 can be easily manufactured.

Further, since the spring plate nut portion 68 is formed in the insertion hole 67 portion of the fixed blade 51 which receives the support shaft 53, the scissors 19 are assembled by simply press-fitting the support shaft 53 at a predetermined pressure. The contact pressure between the fixed blade 51 and the movable blade 52 can be adjusted at the same time. Therefore, the contact pressure can be mechanically easily adjusted without requiring skill, and the scissors 19 with good sharpness and low cost can be configured.

Incidentally, the spring plate nut may be provided as a separate member without forming the spring plate nut portion in the fixed blade. Further, in both the embodiments, the scissors in which the blade has a special shape have been described, but the structure around the support shaft of the present invention has scissors in which the blade has a general shape (see FIG. 10).
See also).

[0045]

As described above, according to the scissors of the present invention,
The connection between the fixed blade and the movable blade by the support shaft and the adjustment of the contact pressure between the fixed blade and the movable blade can be easily performed without requiring skill. Therefore, mass production is possible and cost can be reduced.

Further, according to the cutter mechanism of the present invention, by using the above-mentioned scissors which exhibits stable cutting performance for a long period of time, it is possible to prolong the life of the cutter mechanism itself and to reduce the cost. it can.

Further, according to the printing apparatus of the present invention, since the cutter mechanism can be constructed at low cost and compactly, the printing apparatus itself can be constructed at low cost and compactly. Further, it is possible to minimize the breakdown of the device based on the cutter mechanism.

[Brief description of drawings]

FIG. 1 is a plan view of a tape printer including scissors and a cutter mechanism according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view of the tape printer according to the embodiment.

FIG. 3 is a perspective view around a cutter mechanism according to the embodiment.

FIG. 4 is a structural diagram of scissors of the cutter mechanism according to the embodiment.

FIG. 5 is an exploded perspective view of scissors of the cutter mechanism according to the embodiment.

6 is a cross-sectional view taken along the line AA of FIG.

7 is a sectional view taken along line BB of FIG.

FIG. 8 is a front view of scissors according to the second embodiment.

9 is a cross-sectional view taken along the line CC of FIG.

FIG. 10 is a structural diagram of conventional scissors.

[Explanation of symbols]

1 tape printer 9 print head 10 Platen roller 11 Cutter mechanism 12 Tape cut push button 14,19 scissors 15 Cutting operation means 21,51 fixed blade 21a, 51a blade part 21b, 51b Handle part 22,52 movable blades 22a, 52a blade part 22b, 52b handle part 23, 53 spindle 37,67 insertion hole 38,68 Spring plate nut 42 Shaft T printing tape

Continuation of the front page (56) Reference JP-A-6-205882 (JP, A) JP-A-8-25730 (JP, A) JP-A-7-89159 (JP, A) Actual development 1-76769 (JP , U) Actual opening 2-22772 (JP, U) Actual opening Sho 62-10877 (JP, U) Actual opening Sho 51-76778 (JP, U) Actual opening Sho 58-121614 (JP, U) Actual opening Sho 49-80483 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B26B 13/00-13/28 B41J 11/66

Claims (9)

(57) [Claims] 1. A fixed blade and a movable blade, each of which has a handle portion and relatively rotates to perform a cutting operation, and a support shaft which rotatably connects the fixed blade and the movable blade, The fixed blade is inserted from the insertion hole through which the support shaft is inserted to its circumference.
Put a plurality of notches radially to the edge have a spring plate nut portion formed in the spring plate nut shape, the support shaft comprises a head in contact with the movable blade, the press-fitting
And a shaft portion that is locked to the locking end of the spring plate nut portion.
Scissors, characterized in that is. 2. The scissors according to claim 1, wherein each of the fixed blade and the movable blade is made of a thin plate hardened material. 3. The scissors according to claim 1, wherein the shaft portion of the support shaft is formed with an annular groove in which the locking end of the spring plate nut portion is locked. 4. The scissors according to claim 1, wherein the shaft portion of the support shaft is formed with a male screw for locking the locking end of the spring plate nut portion. 5. Instead of the spring plate nut, scissors according to any one of claims 1 to 4, characterized in that it comprises a spring plate nut fixed to the outer surface of the fixed blade. 6. The scissors according to claim 1, wherein the fixed blade and the movable blade are press-formed products formed by punching a plate material. 7. The cutting operation according to claim 1, wherein at least one of the handle portions is engaged with the scissors, and the fixed blade and the movable blade are cut through the handle portions. A cutter mechanism characterized by comprising means. 8. The cutter mechanism according to claim 7, wherein the fixed blade and the movable blade are formed so as to be bent around the support shaft in a rotation plane. 9. The cutter mechanism according to claim 7 or 8 for cutting the tape-shaped member into a predetermined length, a printing unit for performing desired printing on the tape-shaped member, and a tape-shaped printed by the printing unit. A printing apparatus, comprising: a tape feeding unit that feeds a member to face the cutter mechanism.