JP7034564B2 - Tweezers with sliding knife - Google Patents

Description

The present invention relates to tweezers with a sliding knife that can improve work efficiency when the work of cutting an arbitrary object and the work of sandwiching a small piece obtained by cutting are alternately performed.

Generally, a wide range of objects such as buildings, vehicles such as automobiles and motorcycles, machines, models, and crafts are painted for the purpose of aesthetic decoration and corrosion protection.
When performing such painting, it is common to attach masking tape (adhesive tape for protection) in order to cure (protect) the parts other than the painted part from stains.

Taking a motorcycle as an example, it is often the case that decorative characters and patterns are drawn by spray painting on windshield parts (cowl) and fuel tanks made of synthetic resin that cover the vehicle body and occupants.
At the time of spray painting, in order to finish the characters / patterns beautifully as desired, the painted surface is faithfully exposed to the same shape and dimensions as the desired characters / patterns, and masking tape is attached around the painted surface.
In particular, if the desired characters / patterns have a complicated and extremely complicated design, cut a part of the masking tape with a design knife, and then pinch unnecessary pieces of the masking tape after cutting with tweezers. remove.
In a complicated design, cutting with a design knife and removal of cut pieces with tweezers will be repeated many times, changing these tools each time.

If the work of alternating between the design knife and the tweezers is done several times, the time and effort required for it will not be particularly troublesome.
However, for a worker who is professionally engaged in such decoration work, a considerable amount of time and labor is saved only by the transfer work as a whole, which is a major factor in the decrease in work efficiency.

By the way, the cutting blade of the design knife is very sharp.
On the other hand, the handle portion (handle) of the design knife gripped by the user is often cylindrical.
Therefore, when the design knife and tweezers are used alternately and the cutting work and the pinching work are repeated for a long time, the design knife is accidentally dropped when it is placed due to the decrease in concentration due to fatigue, and the user himself / herself There is a risk of injury or damage to the desk or floor.

In order to eliminate the harmful effects of changing hands as described above, tools having a cutting function with a knife and a holding function with tweezers have been proposed in the past (see Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 2005-212091 Jikkai Sho 63-022869 Gazette

According to the technique of Patent Document 1, a cutting blade is directly formed at the tip of the side surface of one of the two rods constituting the tweezers (Reference 1, FIG. 1).
However, Document 1 has technical contents that are intended to improve convenience when a narrow masking tape is applied (paragraph 5).
That is, the technology assumes the work of pinching the masking tape with tweezers and attaching it to the object, and when the tape is attached to the desired location, the masking tape is cut with the cutting blade formed on the tip of the tweezers. (5 paragraphs of the same). In such a usage pattern, it is assumed that the masking tape is often cut in the width direction.

However, according to Cited Document 1, when a cutting blade formed at the tip of the tweezers is used to cut a very long distance along the stretching direction of the masking tape in order to cut out the middle of the masking tape in a fine line shape. , It is considered difficult to operate the cutting blade precisely and accurately.
In Document 1, a cutting blade is provided at the tip of a rod on one side of the tweezers. Therefore, in order to apply this cutting blade to the masking tape, it is inevitably necessary to hold the tweezers in a tilted state.
In this case, the remaining rod not provided with the cutting blade becomes an obstacle, impairs the comfort of holding the instrument in the hand, and hinders the precise and accurate operation of the cutting blade.

Further, in the technique of the same document 1, since the cutting blade is directly formed on the tip of a piece of tweezers (Fig. 1), if the user tries to grab the object picked by the tip of the tweezers, he / she may be injured by mistake. There is also a risk of doing it.

Next, the technique (draft 1) of Patent Document 2 will be examined.
According to this technique, a piece 6 of tweezers is provided on the cutter knife main body 3 (detailed explanation of the invention, fourth paragraph).
When the tweezers function is used in Document 2 (Proposal 1), it is necessary to accommodate the blade 2 of the cutter knife in the main body 3 (detailed explanation of the invention, paragraph 6, FIG. 1). As is clear from FIG. 1, when the blade 2 of the cutter knife is housed in the main body 3, the user needs to retract the blade 2 into the main body 3 by a manual operation.
When using the cutter knife function in the same plan (Fig. 3), insert the stop hole 5 into the stop button 4 塡 to fix the piece 6 of the tweezers to the main body 3, and then the blade 2. Is manually extruded from the main body 3 for use.

Consider using the cited document 2 (draft 1) configured in this way, cutting the middle part of the masking tape so as to be hollowed out in a fine line along the stretching direction, and then removing the cut tape piece with tweezers.
If you want to cut out the middle of the masking tape in a thin line, you need to use it as a utility knife. In this case, the stop button 4 is fitted into the stop hole 5 provided in the piece 6 of the tweezers, and the piece 6 is fixed to the cutter knife main body 3. Then, the blade 2 is extruded from the cutter knife body 3.
All of these series of operations must be performed manually by the user.
When used as a cutter knife, the tweezers piece 6 is fixed along the longitudinal direction of the cutter knife main body 3, but when the cutter knife is operated, the comfort when gripping the instrument (main body 3) is impaired. There is also a risk.

Further, consider a case where the tape piece cut by the cutter knife function is removed by the tweezers function according to the cited document 2 (1st draft).
At this time, the user slides the blade 2 of the cutter knife by hand to accommodate the cutter knife body 3, then removes the stop button 4 from the stop hole 5 and releases the piece 6 of the tweezers from the cutter knife body 3. do.
The work of accommodating the blade 2 in the main body 3 and the work of removing the stop button 4 are also performed manually by the user himself / herself.
That is, in Cited Document 2 (Proposal 1), although the cutter knife function and the tweezers function are physically integrally mounted on one instrument, these two functions are actually used for one work (cutting work). Considering that the work is carried out while switching each function each time (one of the tweezers work) is completed, it is considered that the efficiency cannot be dramatically improved.

Further, another configuration example (draft 2) is disclosed in Cited Document 2.
In the two proposals, the piece 12 of the tweezers is slid forward by hand (detailed explanation of the device, paragraph 6, Fig. 4), and the object is sandwiched between the piece 12 and the blade 7 of the cutter knife. , Realize the tweezers function.
Further, in the two proposals, when the cutter knife function is used, the piece 12 of the tweezers is moved backward by hand (detailed explanation of the invention, paragraph 6, FIG. 6).
In Cited Document 2 (Proposal 2), every time the tweezers function and the cutter knife function are switched, it takes time and effort to push out or retract the tweezers piece 12 attached in the longitudinal direction of the cutter knife.

In Cited Document 2 (Proposal 2), the blade 7 of the cutter knife can be left exposed from the main body 8 regardless of whether the tweezers function or the cutter knife function is used (Figs. 4 and 6). The time and effort required to insert and remove the blade 7 can be saved.
However, the tweezers function of the two proposals is realized by combining the tweezers piece 12 and the cutter knife blade 7.
Therefore, if the object to be sandwiched is soft, there is a risk of damaging the object.
On the contrary, if the object to be sandwiched is hard like metal, the blade 7 may be spilled or the blade 7 may be broken.
Further, if the user tries to grab the object picked by the piece 12 of the tweezers and the blade 7 of the cutter knife, there is a risk of injury.

The present invention has been made in view of the above problems, and in an instrument having a knife cutting function and a tweezers holding function integrally, the labor for switching between both functions is reduced as compared with the conventional case, and the knife function / tweezers function is achieved. The purpose is to improve usability during use and to improve safety.

[First invention]
Therefore, in order to solve the above problems, the tweezers with a sliding knife according to the first invention of the present application are used.
Tweezers with a sliding knife that has both a cutting function for cutting an arbitrary object and a holding function for holding a small piece obtained by cutting the object.

Tweezers that have a "dogleg" shape that is physically integrated by joining one end of two rod-shaped members to each other, and can hold an arbitrary object by the tips of both rod-shaped members on the opposite side of the joined portion. When,
A guide groove made of a hollow structural member provided along the axial direction of the rod-shaped member constituting the tweezers, and
A shaft rod consisting of a rod-shaped member with a fine core and inserted into the guide groove so that it can slide,
A member that is fixed to the shaft rod and is operated by the user.
With the cutting blade fixed to the slider,
An elastic member connected between the tweezers joint and one end of the shaft rod, and a slider position return mechanism that is engaged to the tweezers joint and one end of the shaft rod.
It is a mechanism provided in pairs on the slider side and the tweezers side, and is composed of a locked portion provided on the side surface of the slider and a locking portion for locking the locked portion provided on the tweezers. Cutting blade fixing mechanism and
Equipped with

(1) When the user is not applying force to the slider and the slider is in the return position by the slider position return mechanism made of an elastic body.
The cutting blade is retracted inward from the tip of the tweezers, and the tweezers can hold the pinch function.
(2) When the user shifts the slider and the cutting blade is extruded to the outside of the tip of the tweezers.
The cutting function is exhibited by the cutting blade fixed to the slider.

According to the first invention, usually, the functions (cutting function and holding function) individually possessed by a plurality of tools (knife and tweezers) are physically mounted on one instrument (tweezers with a sliding knife of the present application). There is.

[Tweezers function]
Further, when the tweezers 1 with a sliding knife of the present application functions as "tweezers" (FIG. 1), when the user does not apply force to the slider 32, the position return action of the slider position return mechanism 34 made of an elastic body is performed. As a result, the slider 32 is in the return position (Fig. 1).
That is, the cutting blade 33 is retracted inward from the tip of the tweezers 2, and can exhibit the holding function by the tweezers 2.
The "return position" refers to a position where the slider 32 stands still due to the action of the slider position return mechanism 34 when no external force is applied to the slider 32.

In the tweezers 1 with a sliding knife, the structure of the tip of the tweezers 2 is the same as that of the normal tweezers (FIG. 1), and the cutting blade is directly formed on the tip of the tweezers 2, or the cutting blade 33 and the tweezers 2 are formed. There is no such thing as pinching an object by combining one of the rod-shaped members.
Therefore, the risk of damaging the object picked up by the tweezers 2 can be eliminated.
Further, when the user grabs the object held by the tweezers 2, the risk of injury can be prevented.

Further, in the first invention, due to its configuration, when the tweezers 2 are used, it is not necessary to release a piece of tweezers (one of the two rod-shaped members) from the cutter knife body as shown in Reference Documents 2 and 1. Is.
Therefore, the first invention is aimed at improving usability when using tweezers, as compared with a conventional instrument in which a knife and tweezers live together.

[Knife function]
Further, in the first invention, when the tweezers 1 with a sliding knife functions as a "knife" (FIG. 3), the cutting blade 33 is extruded to the outside of the tip of the tweezers 2 by shifting the slider 32 by the user.
That is, when the tweezers 1 with a sliding knife functions as a "knife", it is used in the state of FIG.
The state in which the two rod-shaped members of the tweezers 2 are close to each other as shown in FIG. 4 is achieved by the user pinching the two rod-shaped members by hand and applying a force.

In the configuration example of FIG. 3, the locked portion 321 provided on the side surface of the slider 32 is a protrusion member 321 made of small pieces.
Further, the locking portion 23 for locking the protrusion member 321 is a small hole 23-1 to 23-5 formed inside the tweezers 2 having the same shape and the same size as the protrusion member 321 (Fig.). 3).
In this way, when using the knife function, the relative position of the slider 32 with respect to the tweezers 2 is fixed by the cutting blade fixing mechanism consisting of a pair of the locked portion 321 on the slider 32 side and the locking portion 23 on the tweezers 2 side. Therefore, even when pressure is applied to the cutting blade 33 in the cutting work, the cutting blade 33 can be stably operated.

Further, when the knife function is terminated, the locked portion 321 on the slider 32 side is released from the locking portion 23 on the tweezers 2 side only by the user loosening the force holding the double rod-shaped members of the tweezers 2. Will be done.
After that, the slider 32 is pulled inward from the tip of the tweezers 2 by the tensile force of the slider position return mechanism 34 made of an elastic member without the user applying any force to the slider 32 (FIG. 1). In the state of FIG. 1, the state in which the tweezers function can be exerted is already in place.
That is, according to the first invention, it is possible to switch from the knife function to the tweezers function without manual operation by the user.

Further, the switching from the tweezers function to the knife function can be completed immediately by pushing out the slider 32 and moving the cutting blade 33 so as to be outside the tip of the tweezers 2 (FIG. 3).
Further, the knife function can be stably used by a very simple operation of aligning the positions of these two elements 23 and 321 so that the locking portion 23 exerts a locking action on the locked portion 321 (FIG. 4). ).

[Second invention]
Further, in order to solve the above problems, the second invention of the present application is the tweezers with a sliding knife according to the first invention.
The slider position return mechanism is configured to be a spring.

According to the second invention, the slider position return mechanism 34 is composed of a "spring" (FIG. 2).
The spring 34 may be a very common coil spring having a cylindrical shape.
Since springs are widely and generally distributed in the market as general-purpose parts, there is an advantage that manufacturing costs can be suppressed.
As the constituent material of the spring 34, any material such as a metal or synthetic resin can be used as long as it generates an elastic force according to the magnitude of the external force.
Further, as the "spring" constituting the slider position return mechanism 34, an air spring that is displaced according to the contraction / expansion of the gas filled in the piston may be adopted.
Further, the slider position return mechanism can be configured by using a magnetic force (FIGS. 7 and 8).

[Third invention]
Further, in order to solve the above problems, the third invention of the present application is the tweezers with a sliding knife according to the first invention.
The slider position return mechanism is configured to be a rubber cord.

According to the third invention, as the slider position return mechanism, a "rubber string" that is widely and generally available in the market and is inexpensive is adopted (34A in FIG. 6).
This simplifies the configuration of the tweezers with a sliding knife and reduces the weight.
Further, by adopting the rubber cord 34A, the manufacturing process can be simplified and the manufacturing cost can be suppressed, so that the selling price can be set low and the product can be widely used.
Further, even if the rubber cord 34A is damaged, the cost and time required for repair can be significantly reduced because the replacement parts are inexpensive.

[Fourth Invention]
Further, in order to solve the above problems, the fourth invention of the present application is the tweezers with a sliding knife according to any one of the first to third inventions.
The cutting blade fixing mechanism is
The locked portion provided on the slider is a protrusion member composed of small pieces provided on the side surface of the slider.
The locking portion provided on the tweezers is a small hole formed inside the tweezers and having the same shape and dimensions as the protruding member.

When using the knife function of tweezers with a sliding knife
By fitting the protrusion on the slider side into the small hole on the tweezers side, the relative position of the cutting blade provided on the slider is fixed with respect to the tweezers.

According to the fourth invention, the locked portion 321 on the side surface of the slider 32 is locked by the locking portion 23 (any of 23-1 to 23-5 in FIG. 3) provided on the tweezers 2.
That is, the protrusion member 321 (locked portion) on the slider 32 side fits into the small hole 23 (locking portion) on the tweezers side (FIGS. 3 and 4), whereby the slider 32 (and thus the cutting blade) with respect to the tweezers 2 is fitted. The misalignment of 33) is sealed.
By fixing the relative position of the slider 32 with respect to the tweezers 2 in this way, it is possible to stably operate the cutting blade 33 even when pressure is applied to the cutting blade 33 during cutting work. Become.

Further, in the fourth invention, when the knife function (FIG. 4) is terminated, the protrusion member 321 on the slider 32 side becomes smaller on the tweezers 2 side only by the user loosening the force holding the double rod-shaped members of the tweezers 2. It is released from the hole 23. This is because the tweezers 2 have a self-restoring force similar to that of a leaf spring.
When the protrusion member 321 is released from the small hole 23, the slider 32 is then pulled back to the return position by the elastic force of the slider position return mechanism 34 (FIG. 1).
In the example of FIG. 3, five small holes 23-1 to 23-5 are provided as locked portions on the tweezers 2 side, but the number of small holes 23 may be arbitrary.
As the number of small holes 23 provided increases, the fixed position of the slider 32 can be discretely switched in multiple stages.
In the example of FIG. 3, the locking portions 23-1 to 23-5 are continuously arranged so as to be adjacent to each other without any gap.
Further, in the configuration of FIG. 3, the locked portion (projection member 321) is directly provided on the side surface of the cutting blade 33, and the locking portion (small hole 23) is provided near the tip of the tweezers 2 to provide the tweezers 2. It is also possible to fix the relative positions of the tweezers and the slider 32.

In the fourth invention, a soft rubber plate 23A may be provided on the tweezers 2 side instead of the small hole 23 in FIG. 3 as shown in FIGS. 9 and 10 (b).
Under this configuration, when the tweezers 2 are gripped and both pieces are closed in order to exert the knife function, the protrusion member 321 (FIG. 10 (a)) on the slider 32 side is replaced with the rubber plate 23A (FIG. 10 (b). )), The relative position of the slider 32 with respect to the tweezers 2 is fixed.
In this case, since the protrusion member 321 on the slider 32 side can be locked at an arbitrary position within the region of the rubber plate 23A, the position of the so-called stepless cutting blade 33 can be adjusted rather than discretely.
Further, in the fourth invention, instead of the small hole 23 on the tweezers 2 side and the protrusion member 321 on the slider 32 side as shown in FIG. 3, a sheet (not shown) having a large friction coefficient is provided on both sides of the tweezers 2 and the slider 32. A surface fastener (not shown) may be provided.
Even with such a configuration, it is possible to prevent the slider 32 from being displaced during the knife function.

[Fifth Invention]
Further, in order to solve the above problems, the fifth invention of the present application is the tweezers with a sliding knife according to any one of the first to third inventions.
The cutting blade fixing mechanism is
The locked portion provided on the slider is composed of a locked magnet having either N pole or S pole polarity.
The locking portion provided on the tweezers consists of a locking magnet provided inside the tweezers and having the opposite polarity to the locked magnet.

When using the knife function of tweezers with a sliding knife
By attracting the locked magnet on the slider side and the locking magnet on the tweezers side by the action of magnetic force, the relative position of the cutting blade provided on the tweezers is fixed with respect to the tweezers.

According to the fifth invention, the locked portion on the slider 32 side (the locked magnet 322 in FIG. 11) and the locked portion on the tweezers 2 side (the locking magnet 23B in FIG. 11) are attracted by the action of magnetic force. As a result, the relative position of the slider 32 (and thus the cutting blade 33) with respect to the tweezers 2 can be fixed.
This makes it possible to obtain the same effect as that of the fourth invention.
As shown in FIG. 12B, the locking magnets 23B (23B-1 to 23B-5) are arranged inside the rod-shaped member of the tweezers 2.
In the example of FIG. 12B, five locking magnets 23B-1 to 23B-5 are provided as locked portions, but the number of locking magnets 23B may be arbitrary.
The larger the number of locking magnets 23B, the more the fixed position of the slider 32 can be discretely switched in multiple stages.

Further, in the fifth invention, as shown in FIG. 13B, a long iron piece 23C may be arranged as a locking portion instead of the locking magnet 23B.
By doing so, even in the cutting blade fixing mechanism configured by using a magnet, the position adjustment of the cutting blade 33 that is not discrete and stepless is realized as in the configuration shown in FIG.
The constituent material of the iron piece 23C is iron or other ferromagnet.

[Sixth Invention]
Further, in order to solve the above problems, the sixth invention of the present application is the tweezers with a sliding knife according to the first to fifth inventions.
The cutting blade is configured to be removable from the insertion groove provided in the slider.

A replacement tool member, which is formed so that one end side has a tool function other than the cutting blade and the other end side is detachably formed in the insertion groove.
Was further configured.

As shown by the broken line in FIG. 5A, one end of the cutting blade 33 is inserted into the inside of the slider 32.
Further, in the sixth invention, as shown in FIG. 14 (a), the insertion groove 323 is provided, and the cutting blade 33 and various tool functions as illustrated in FIG. 14 (b) are provided. Replacement tool members can be attached.
Therefore, when the cutting blade 33 is worn and the sharpness is deteriorated, it is possible to replace the cutting blade 33 with another cutting blade 33.
Further, in FIG. 14B, in addition to the cutting blade 33, a drilling needle 33A for drilling or penetrating an object and a screwdriver 33B are exemplified as replacement tool members.
In the example of FIG. 14C, instead of the cutting blade 33, the drilling needle 33A is attached to the slider 32 via the insertion groove 323.
According to the sixth invention, the function of cohabiting with the tweezers function is not limited to the knife function, and can be used for a wide variety of purposes.

[7th invention]
Further, in order to solve the above problems, the seventh invention of the present application is the tweezers with a sliding knife according to the first to sixth inventions.

A thick cylindrical hollow pipe mounted around a shaft rod fixed to a slider,
A pop-out prevention mechanism that is rotatably attached to the rod-shaped member of the tweezers,
Further prepare

The pop-out prevention mechanism is
A lever that is a member gripped by the user and serves as a force point when the pop-out prevention mechanism is rotated with respect to the tweezers.
A pin that serves as a fulcrum when rotating the pop-out prevention mechanism, which rotatably fixes the pop-out prevention mechanism to the tweezers by being inserted into the pop-out prevention mechanism.
A claw-shaped member provided at the tip of the pop-out prevention mechanism, which acts as a point of action for the hollow pipe of the pop-out prevention mechanism by engaging with a hollow pipe attached around the shaft rod. ,
Have,

(1) When the lever is not operated by the user and the lever is at a position away from the tweezers rod-shaped member, the pop-out prevention claw engages with the hollow pipe, so that the slider is in front of the tweezers from the return position. Prevents you from moving to
(2) When the user grips the lever and the lever approaches the tweezers rod-shaped member, the hollow pipe is released from the restraint by the pop-out prevention claw, and the slider can move forward of the tweezers from the return position. It was configured.

According to the seventh invention, as shown in FIG. 15, as long as the pop-out prevention claw 351 of the pop-out prevention mechanism 35 is engaged with the hollow pipe 311 on the shaft rod 31 side, the tweezers are set with respect to the slider 32 rather than the return position. 2 Even if a force to move forward is applied, the jump-out prevention claw 351 prevents the slider 32 from moving (the cutting blade 33 pops out), ensuring safety when the tweezers 1 with a sliding knife is not used. can.
Further, according to the seventh invention, when the user performs an operation of gripping the lever 352 and the lever 352 approaches the tweezers 2 rod-shaped member as shown in FIG. 17, the hollow pipe 311 is released from the restraint by the pop-out prevention claw 351. Then, the slider 32 can be moved forward of the tweezers 2 from the return position.
As a result, it is possible to prevent unnecessary popping out of the cutting blade 33 except when the knife function is used.

[Eighth invention]
Further, in order to solve the above problems, the eighth invention of the present application is the tweezers with a sliding knife according to the first to seventh inventions.
A protective cover, which is located near the position of the cutting blade when the slider is in the return position and has a C-shaped cross section that covers the cutting blade.
Was further provided.

According to the eighth invention, a protective cover 36 having a C-shaped cross section is attached to the side surface of the tweezers 2 so that the cutting blade 33 can be covered as shown in FIG.
The mounting position of the cover 36 is close to the position of the cutting blade 33 when the slider 32 is in the return position.
When the slider 32 is in the return position, it corresponds to when the tweezers function is used, and when the knife function is not used. At this time, as shown in FIG. 19, the cutting blade 33 is surrounded by the protective cover 36, and safety for the user can be ensured.
Further, when the knife function is used (FIG. 20), the protective cover 36 does not interfere with the exposure of the cutting blade 33, and the knife function is ensured.

It is an external perspective view when the slider is retracted in the tweezers with a sliding knife of this embodiment. It is an external perspective view which shows the component of the tweezers with a sliding knife. It is an external perspective view when the slider is extruded in the tweezers with a sliding knife. It is an external perspective view when the tweezers with a sliding knife exerts a knife function. It is a schematic diagram which shows the component of the tweezers with a sliding knife, (a) is a figure which shows a slider, (b) is a figure which shows the tweezers. It is an external perspective view which shows the modification which made the slider position return mechanism by the rubber string. It is an external perspective view when the slider is retracted in the modified example which configured the slider position return mechanism by a magnet. It is an external perspective view when a slider is extruded in the modified example in which a slider position return mechanism is configured by a magnet. It is an external perspective view which shows the modification which adjusts the position of a slider by a rubber plate. It is a schematic diagram which shows the component of the tweezers with a sliding knife which adjusts a slider position by a rubber plate, (a) is a figure which shows a slider, (b) is a figure which shows the tweezers. It is an external perspective view which shows the modification which adjusts the position of a slider by a magnet. It is a schematic diagram which shows the component of the tweezers with a sliding knife which adjusts a slider position by a magnet, (a) is a figure which shows a slider, (b) is a figure which shows the tweezers. It is a schematic diagram which shows the component of the tweezers with a sliding knife which adjusts the slider position by the magnet and the iron piece, (a) is the figure which shows the slider, (b) is the figure which shows the tweezers. It is a schematic diagram showing the components of the tweezers with a sliding knife to which the cutting blade can be attached and detached. c) is a diagram showing a slider equipped with a drilling needle. It is an external perspective view when the slider is retracted in the tweezers with a sliding knife provided with the rotatable pop-out prevention mechanism. It is an external perspective view which shows the component of the tweezers with a sliding knife provided with the rotatable pop-out prevention mechanism. FIG. 3 is an external perspective view of tweezers with a sliding knife provided with a rotatable pop-out prevention mechanism when the slider is extruded. In the tweezers with a sliding knife provided with a pop-out prevention mechanism by a slide fastener, (1) is an external perspective view when the slider is extruded, and (b) is a diagram showing a pop-out prevention mechanism by a slide fastener. be. It is an external perspective view when the slider is retracted in the tweezers with a sliding knife provided with a protective cover. It is an external perspective view when a slider is extruded in the tweezers with a sliding knife provided with a protective cover.

Hereinafter, the tweezers with a sliding knife of the present invention will be described with reference to FIGS. 1 to 20.
[Embodiment]
An embodiment of the present invention is an example of configuring tweezers 1 with a sliding knife having both a cutting function for cutting an arbitrary object and a holding function for holding a small piece obtained by cutting the object.
This content will be described in detail below.

FIG. 1 is a schematic view showing the configuration of tweezers 1 with a sliding knife according to an embodiment.
As shown in FIG. 1, the tweezers 1 with a sliding knife includes tweezers 2, a guide groove 22, a shaft rod 31, a slider 32, a cutting blade 33, a slider position return mechanism 34, and a cutting blade fixing mechanism 321. -It is composed of 23 (23-1 to 23-5).

As shown in FIG. 2, the tweezers 2 have a “dogleg” shape that is physically integrated by joining one ends of two rod-shaped members to each other.
The tweezers 2 can hold an arbitrary object by the tips of both rod-shaped members on the opposite side of the joint portion JN.
A non-slip 21 having a continuous uneven shape is formed on the side surface of the tweezers 2.
The tweezers 2 are not limited to those in which two rod-shaped members are joined at the ends, and may be tweezers having an overall shape formed into a "dogleg" shape by refracting one member in the middle. ..

The guide groove 22 is made of a hollow structural member.
In the example shown in FIG. 1, the guide groove 22 is a guide pipe made of a hollow pipe.
The guide groove 22 is provided along the axial direction of the rod-shaped member constituting the tweezers 2.
The guide groove 22 is not limited to a pipe having a hollow cylindrical cross section, and may be a rail having a rectangular cross section or a U-shaped cross section.
Further, the constituent material of the guide groove 22 may be any material such as metal, synthetic resin, and wood.
As the method for fixing the guide groove 22 to the tweezers 2, any method such as adhesive / soldering can be adopted. Further, the tweezers 2 and the guide groove 22 may be integrally molded.

In FIG. 1, the guide groove 22 is attached to the rod-shaped member on the right side when the tip of the tweezers 2 is viewed from the joint portion JN side of the tweezers 2.
When the user's dominant hand is the right hand, when moving the slider 32, the tweezers rod-shaped member provided with the guide groove 22 is placed on the right palm and operated. Therefore, the configuration example of FIG. 1 is for right-handed people. Suitable for.
In the case of left-handed use, the guide groove 22 may be arranged on the rod-shaped member on the left side of the tweezers 2 when viewed from the joint portion JN of the tweezers 2.

The shaft rod 31 is made of a rod-shaped member having a fine core.
The shaft rod 31 is inserted into the guide groove (guide pipe) 22 so as to be slidable.
The constituent material of the shaft rod 31 may be any material such as metal, synthetic resin, and wood.

The slider 32 is a member fixed to the shaft rod 31 and is operated by the user.
The slider 32 can slide in either the extrusion direction or the retracting direction shown in FIG.
The width of the slider 32 is sufficiently thin so as not to interfere with the holding function of the tweezers 2 (so that the tips of the tweezers 2 can be brought into close contact with each other).
Further, the shape of the slider 32 is not limited to a shape in which the front portion is raised and the rear portion is flat as illustrated in FIG. 1, and any shape may be used as long as it fits the user's finger.

The cutting blade 33 is fixed to the slider 32 as shown in FIG.
The cutting blade 33 is made of a thin plate made of a metal material (stainless steel, carbon steel, alloy steel, titanium alloy, etc.) or a ceramic material.
The cutting blade 33 may be either a single-edged blade (one surface is a vertical surface and the other surface is inclined with respect to the vertical direction) or a double-edged blade (both sides are inclined with respect to the vertical direction).
The cutting blade is not limited to the form shown in FIG. 2, and as in the cutting blade 33C shown in FIG. 14B, when the cutting edge is worn due to use, a part of the tip of the cutting blade 33C is broken and cut off to make a sharp edge. It may be configured so that the succeeding portion having a sharp cutting edge can be continuously used as a new tip.
Further, the shaft rod 31, the slider 32, and the cutting blade 33 are not physically different individual parts, but these three components may be integrally formed into one part.

As shown in FIG. 1, the slider position return mechanism 34 is an elastic member connected between the joint portion JN of the tweezers 2 and one end of the shaft rod 31.
One end of the return mechanism 34 is engaged with the joint portion JN of the tweezers, and the other end of the slider position return mechanism 34 is engaged with one end of the shaft rod 31.

In the present embodiment, the slider position return mechanism 34 is configured by a "spring" (FIG. 1).
The spring 34 may be a very common coil spring having a cylindrical shape.
Spring is widely and generally distributed on the market as a general-purpose component, and contributes to reducing the manufacturing cost of tweezers with a sliding knife.
The material of the spring 34 may be any material that generates an elastic force in response to an external force, and any material such as metal, synthetic resin, or the like can be used.

The cutting blade fixing mechanism is provided in pairs on the slider 32 side and the tweezers 2 side.
The cutting blade fixing mechanism of this example is composed of a locked portion 321 provided on the side surface of the slider 32 and a locking portion 23 provided on the tweezers 2.
The locking portion 23 serves to lock the locked portion 321.
In the configuration example of FIG. 3, the locked portion 321 provided on the side surface of the slider 32 is a protrusion member 321 made of small pieces.
Further, the locking portion 23 for locking the locked portion 321 (projection member) is a small hole 23-1 to 23 formed inside the tweezers 2 having the same shape and dimensions as the protrusion member 321. -5.
As shown in FIG. 5B, the locking portions 23-1 to 23-5 are continuously arranged so as to be adjacent to each other without any gap.

Next, the operation of the tweezers 1 with a sliding knife having the above configuration will be described.

[Tweezers function]
When the tweezers 1 with a sliding knife functions as "tweezers" (FIG. 1), the user does not apply force to the slider 32, and the slider 32 returns due to the position return action of the slider position return mechanism 34 made of an elastic body. It is in position (Fig. 1).
That is, the cutting blade 33 is retracted inward from the tip of the tweezers 2, and the holding function by the tweezers 2 is exhibited.
The "return position" refers to a position where the slider 32 stands still due to the action of the slider position return mechanism 34 when no external force is applied to the slider 32.

In the tweezers 1 with a sliding knife of the present application, the structure of the tip of the tweezers 2 is the same as that of the normal tweezers (FIG. 1). There is no need to combine the cutting blade 33 and one of the rod-shaped members of the tweezers 2 to pinch the object.
Therefore, there is no possibility that the object picked up by the tweezers 2 will be damaged by the sharp blade 33.
Further, when the user grabs the object held by the tweezers 2, the risk of injury can be prevented.

[Knife function]
Next, the knife function of the tweezers 1 with a sliding knife will be described.
Further, when the tweezers 1 function as a "knife" (FIG. 3), the user shifts the slider 32 and pushes the cutting blade 33 outward from the tip of the tweezers 2.
At this time, the cutting function by the cutting blade 33 fixed to the slider 32 is exhibited.

When the tweezers 1 with a sliding knife functions as a "knife", it is used in the state shown in FIG.
The state in which the tips of the tweezers 2 are close to each other as shown in FIG. 4 is achieved by the user pinching the two rod-shaped members constituting the tweezers 2 by hand and applying a force.

In the state of FIG. 4, a pair of a locked portion (projection member 321 made of small pieces) on the slider 32 side and a locking portion (small hole 23 having the same shape and dimensions as the protrusion member 321) on the tweezers 2 side. Therefore, when using the knife function, the relative position of the slider 32 (and thus the cutting blade 33) with respect to the tweezers 2 is fixed.
Therefore, even when a pressure (reaction force from the object to be cut) is applied to the cutting blade 33 during the cutting work, the cutting blade 33 can be stably operated.

In this example, when the knife function (FIG. 4) is terminated, the user simply loosens the force holding both rod-shaped members of the tweezers 2, and the restoring force (leaf spring action) of the tweezers 2 itself causes the slider 32. The protrusion member 321 on the side is released from the small hole 23 on the tweezers 2 side.
Further, when the protrusion member 321 comes out of the small hole 23, the slider 32 is pulled back to the return position by the action of the slider position return mechanism 34 (FIG. 1).
In this way, a series of operations for alternately switching between the cutting function by the knife and the pinching function by the tweezers is completed.

As described above, according to the present embodiment, unless the user applies force to the slider 32, the slider 32 continues to be settled in the return position by the slider position return mechanism 34, and the tweezers 1 with a sliding knife are "tweezers". Can be used as.
When using the tweezers function, it is not necessary for the user to manually release a piece of tweezers from the cutter knife body.

Further, in this example, the configuration of the tip of the tweezers 2 is no different from that of a normal tweezers (FIG. 1), and a cutting blade is formed at the tip of the tweezers 2, or a rod shape on one side of the cutting blade 33 and the tweezers 2. There is no need to pinch an object using a combination of members.
Therefore, it is possible to avoid the risk of damaging the object pinched by the tweezers 2 with a sharp blade and the risk of injury when the user grabs the object pinched by the tweezers 2.

Further, in the present embodiment, the knife function can be exhibited by a simple operation of pushing the cutting blade 33 outward from the tip of the tweezers 2 by using the slider 32.
When the cutting blade 33 is exposed to the outside of the tip of the tweezers 2, the locked portion (projection member 321 in FIG. 3) on the slider 32 side is the locking portion (small hole 23-1) on the tweezers 2 side. It is locked by any of ~ 23-5).
As a result, when cutting the object, the cutting edge of the cutting blade 33 does not shift in position, and the force applied by the user is efficiently transmitted to the cutting object, so that comfort when using the knife function is ensured. To.

[Modification example: Slider position return mechanism using rubber cord]
In the present embodiment, instead of the spring 34, the rubber string 34A can be adopted as the slider position return mechanism as shown in FIG.
The elastic cord 34A may be a very general elastic cord that is widely available on the market and inexpensive. This simplifies the configuration of the tweezers 1 with a sliding knife and reduces the weight.
Further, by adopting the rubber cord 34A, the manufacturing process is simplified and the manufacturing cost is suppressed, so that the selling price can be set at a low price, and it can be widely spread.
Under the configuration of FIG. 6, even if the rubber cord 34A is damaged, the cost and time required for repair can be significantly reduced because the replacement parts are inexpensive.

[Modification example: Slider position return mechanism using magnet]
In this example, instead of the spring 34 of FIG. 1, the magnet 34B can be adopted as the slider position return mechanism as shown in FIGS. 7 and 8.
In the example of FIG. 7, five magnets 34B-1 to 34B-3 are provided.
Of these, the magnet 34B-1 is arranged at one end of the shaft rod 31.

On the other hand, the remaining magnets 34B-2 to 34B-3 are fixed to the tweezers 2 side.
In this example, the magnet 34B-2 is arranged at the joint portion JN of the tweezers 2.
Further, the magnet 34B-3 is fixed along the rod-shaped member of the tweezers 2. The magnet 34B-3 is placed at a position occupied by the magnet 34B-1 when the knife function is exerted by moving the slider 32 (FIG. 4).
The shape of the magnet 34B-3 is an annular shape so that the shaft rod 31 can be inserted.

Here, the role of the slider position return mechanism 34B is to tweezer 32 the slider 32 when the slider 32 is located outside the tip of the tweezers 2 when no external force is applied to the tweezers 32 so that the tweezers function is exerted. It is to move it to the return position sufficiently far from the tip.
Further, another role of the slider position return mechanism 34B is to stably keep the slider 32 in the return position in the return position when no external force is applied to the slider 32.

In view of the above purpose, the magnetic pole of the magnet 34B-2 at the joint portion JN of the tweezers 2 is arranged so as to attract the magnetic pole of the magnet 34B-1 facing the magnet 34B-2.
For example, if the magnetic pole of the magnet 34B-1 facing the magnet 34B-2 is "S pole", the magnetic pole on the magnet 34B-2 side is "N pole" (polarity opposite to that of the magnet 34B-1). ..
Due to the attractive force between the magnet 34B-1 and the magnet 34B-2, the slider 32 at the return position can be continuously moored at the return position, and the stability of the tweezers function is ensured.

On the other hand, the magnetic poles of the magnet 34B-3 are arranged so as to repel each other with the magnetic poles of the magnet 34B-1 facing the magnet 34B-3.
For example, if the magnetic pole of the magnet 34B-1 facing the magnet 34B-3 is "N pole", the magnetic pole on the magnet 34B-3 side is also "N pole" (same polarity as the magnetic pole of the magnet 34B-1).
As a result, after the knife function is completed, when the slider 32 on the outside of the tip of the tweezers 2 is pushed back toward the inside of the tweezers 2 (FIG. 8), it is attached by the repulsive force of the magnet 34B-1 and the magnet 34B-3. Tweezers.

[Modification example: Position adjustment function of cutting blade using rubber plate]
In this example, the rubber plate 23A may be provided on the tweezers 2 side instead of the small hole 23 in FIG. 3 as shown in FIGS. 9 and 10 (b).
Under this configuration, when the tweezers 2 are closed by grasping both rod-shaped members of the tweezers 2 in order to exert the knife function, the protrusion member 321 of FIG. 10 (a) is the rubber plate 23A of FIG. 10 (b). By biting into, the relative positions of the tweezers 2 and the slider 32 are fixed.
In this case, since the slider 32 can be locked at an arbitrary position in the region of the rubber plate 23A, the position of the cutting blade 33 can be continuously and continuously adjusted without being discrete.

[Modification example: Position adjustment function of cutting blade using magnet]
In this example, as shown in FIG. 11, the locked portion (locked magnet 322) on the slider 32 side and the locked portion (locking magnet 23B) on the tweezers 2 side are attracted by the action of magnetic force. It may be configured.
Even under such a configuration, the relative position of the slider 32 (and thus the cutting blade 33) can be fixed to the tweezers 2.

As shown in FIG. 12B, the locking magnets 23B (23B-1 to 23B-5) are fixed to the inside of the tweezers 2 rod-shaped member. In the example of FIG. 12B, five locking magnets 23B-1 to 23B-5 are provided, but the number of locking magnets 23B may be arbitrary.
As the number of locking magnets 23B installed increases, the fixed position of the slider 32 can be discretely switched in multiple stages.

Further, when the position adjusting function of the cutting blade 33 is realized by using a magnet, a long iron piece 23C is arranged as shown in FIG. 13B instead of the locking magnet 23B in FIG. 12B. You may.
By doing so, even in the cutting blade fixing mechanism configured by the magnet 322, the position adjustment of the cutting blade 33 in a non-discrete stepless manner is realized.
The constituent material of the iron piece 23C is preferably iron or other ferromagnet.

[Modification example: Replaceable replacement tool member with various tool functions]
In this example, the cutting blade 33 is detachably configured in the insertion groove 323 provided in the slider 32 so that it can be replaced (replaced) with a replacement tool member having a tool function other than the cutting blade 33. You may.
In this configuration, one end of the cutting blade 33 is inserted into the insertion groove 323 of FIG. 14A so that the cutting blade 33 inserted inside the slider 32 can be pulled out from the slider 32 as shown in FIG. 5A. It is left in a state where it is only fitted (inserted) into.

At this time, the replacement tool members 33, 33A, and 33B having various tool functions shown in FIG. 14B, including the cutting blade 33, are removable from the insertion groove 323.
FIG. 14C shows a state in which the drilling needle 33A is attached to the slider 32 instead of the cutting blade 33.
In FIG. 14B, in addition to the cutting blade 33, a drilling needle 33A and a screwdriver 33B for drilling or penetrating an object are exemplified as replacement tool members.
According to this modification, the function of cohabiting with the tweezers function is not limited to the knife function, and the tweezers 1 with a sliding knife can be utilized for a wide variety of purposes.
Further, even if the cutting blade 33 currently in use deteriorates, it can be replaced with a new cutting blade 33.
Further, small scissors (not shown) can be selected as a tool function of the replacement tool member. An example of a usage scene in which tweezers 2 and small scissors (not shown) are frequently used includes suturing in a medical field.

[Modification example: pop-out prevention mechanism]
In this example, it is also possible to provide a pop-out prevention mechanism 35 so as to prevent unnecessary pop-out of the cutting blade 33 when not in use (FIG. 15).
In this case, as shown in FIG. 16, a thick cylindrical hollow pipe 311 is attached around the shaft rod 31 fixed to the slider.
Further, the pop-out prevention mechanism 35 is rotatably attached to the rod-shaped member of the tweezers 2.

As shown in FIG. 16, the pop-out prevention mechanism 35 has a pop-out prevention claw 351, a lever 352, a pin 353, and a pin insertion hole 354.

As shown in FIG. 15, the lever 352 is a member gripped by the user and serves as a force point when the pop-out prevention mechanism 35 is rotated with respect to the tweezers 2.

Further, the pin 353 is inserted into the pop-out prevention mechanism 35 (pin hole 354) to rotatably fix the prevention mechanism 35 to the tweezers 2.
The pin 353 serves as a fulcrum when rotating the pop-out prevention mechanism 35.

The pop-out prevention claw 351 is a claw-shaped member provided at the tip of the pop-out prevention mechanism 35.
The prevention claw 351 functions as a point of action of the pop-out prevention mechanism 35 with respect to the hollow pipe 311 by engaging with the hollow pipe 311 attached around the shaft rod 31.

When the user has not operated the lever and the lever 352 is located away from the tweezers 2 rod-shaped member (FIG. 15), the pop-out prevention claw 351 engages with the hollow pipe 311 and the slider 32 is moved from the return position. Also prevents the tweezers from moving forward.
That is, as shown in FIG. 15, as long as the pop-out prevention claw 351 of the pop-out prevention mechanism 35 locks the hollow pipe 311 on the shaft rod 31 side, the tweezers 2 will be moved forward from the return position with respect to the slider 32. Even if the force is applied, the pop-out prevention claw 351 prevents the slider 32 from moving (the cutting blade 33 pops out), and the safety of the tweezers 1 with a sliding knife when not in use is ensured.

Further, when the user grips the lever 352 and the lever 352 approaches the tweezers 2 rod-shaped member as shown in FIG. 17, the hollow pipe 311 is released from the restraint by the pop-out prevention claw 351. Then, the slider 32 can move forward of the tweezers 2 from the return position.
In this way, while the normal knife function is ensured when necessary, it is possible to prevent unnecessary popping out of the cutting blade 33 when not in use.

If a lever 352 that the user grasps and operates with the palm is provided as in the pop-out prevention mechanism 35 shown in FIG. 17, the flight is made with respect to the size of the entire device (tweezers 1 with a sliding knife). The output prevention mechanism becomes a large scale.
In order to significantly reduce the size of the pop-out prevention mechanism, it is also possible to configure a pop-out prevention mechanism (slide fastener 35A) that can be operated by the user with a fingertip, as shown in FIG. 18 (a). be.

As shown in FIG. 18B, the slide fastener 35A is provided with a pop-out prevention claw 351A and has a fine line-shaped knob 355.
The pop-out prevention claw 351A engages with the hollow pipe 311 and prevents the slider 32 from moving in front of the tweezers from the return position.
Further, the knob 355 can be moved in the direction of pushing the slide fastener 35A inward of the tweezers 2 or pulled out of the slide fastener 35A from the inside to the outside of the tweezers 2 by the user pinching it with a fingertip. be.
The slide fastener 35A is connected to a position holding mechanism (not shown) having a spring inside, and pops out each time the knob 355 is pushed or pulled by the user. The prevention claw 351A releases or restrains the hollow pipe 311 (see arrow shown in FIG. 18).

By the pulling operation of the knob 355, the pop-out prevention claw 351A engages with the hollow pipe 311 and while the pipe 311 is restrained, the pop-out prevention claw 351A prevents the cutting blade 33 from popping out. Therefore, the safety of the tweezers 1 with a sliding knife when not in use is ensured.
Further, when the pop-out prevention claw 351A and the hollow pipe 311 are separated by the pushing operation of the knob 355 and the pipe 311 is released from the restraint, the knife function becomes available.

[Modification example: Protective cover]
In this example, as shown in FIG. 19, a protective cover 36 having a C-shaped cross section that covers the cutting blade 33 may be provided on the side surface of the tweezers 2.
The mounting position of the cover 36 is close to the cutting blade 33 when the slider 32 is in the return position, as shown in FIG.

When the slider 32 is in the return position, it corresponds to the case where the tweezers function is used among the plurality of functions of the tweezers 1 with a sliding knife.
In this case, since the cutting blade 33 that is not the target of use is surrounded by the protective cover 36, safety can be ensured for the user.
Further, when the knife function is used, as shown in FIG. 20, since the cutting edge of the cutting blade 33 can be exposed through the space of the protective cover 36, the knife function is also ensured.

Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above embodiments. Various modifications that can be understood by those skilled in the art are possible in the configuration and details of the present invention without departing from the gist of the present invention.

1 Tweezers with sliding knife 2 Tweezers 22 Induction groove 31 Shaft rod 32 Slider 33 Cutting blade 23, 321 Cutting blade fixing mechanism 34 Slider position return mechanism 35 Pop-out prevention mechanism 36 Protective cover

Claims (8)

Tweezers with a sliding knife that has both a cutting function for cutting an arbitrary object and a holding function for holding a small piece obtained by cutting the object.

Tweezers that have a "dogleg" shape that is physically integrated by joining one end of two rod-shaped members to each other, and can hold an arbitrary object by the tips of both rod-shaped members on the opposite side of the joined portion. When,
A guide groove made of a hollow structural member provided along the axial direction of the rod-shaped member constituting the tweezers, and
A shaft rod consisting of a rod-shaped member with a fine core and inserted into the guide groove so that it can slide,
A member that is fixed to the shaft rod and is operated by the user.
With the cutting blade fixed to the slider,
An elastic member connected between the tweezers joint and one end of the shaft rod, and a slider position return mechanism that is engaged to the tweezers joint and one end of the shaft rod.
It is a mechanism provided in pairs on the slider side and the tweezers side, and is composed of a locked portion provided on the side surface of the slider and a locking portion for locking the locked portion provided on the tweezers. Cutting blade fixing mechanism and
Equipped with

(1) When the user is not applying force to the slider and the slider is in the return position by the slider position return mechanism made of an elastic body.
The cutting blade is retracted inward from the tip of the tweezers, and the tweezers can hold the pinch function.
(2) When the user pinches the two rod-shaped members by hand and applies force so that the two rod-shaped members of the tweezers are close to each other, the user shifts the slider and the cutting blade is extruded to the outside of the tip of the tweezers. If so,
The locked portion provided on the slider side is locked by the locking portion provided on the tweezers side, so that the relative position of the slider with respect to the tweezers is fixed, and the cutting function by the cutting blade fixed to the slider is used. Tweezers with a sliding knife, characterized by being configured to exert.
In the tweezers with a sliding knife according to claim 1.
Tweezers with a sliding knife, characterized in that the slider position return mechanism is configured to be a spring.
In the tweezers with a sliding knife according to claim 1.
Tweezers with a sliding knife, characterized in that the slider position return mechanism is configured to be a rubber string.
In the tweezers with a sliding knife according to any one of claims 1 to 3.
The cutting blade fixing mechanism is
The locked portion provided on the slider is a protrusion member composed of small pieces provided on the side surface of the slider.
The locking portion provided on the tweezers is a small hole formed inside the tweezers and having the same shape and dimensions as the protruding member.

When using the cutting function with the cutting blade of tweezers with a sliding knife
Sliding, characterized in that the protrusion on the slider side is fitted into the small hole on the tweezers side so that the relative position of the cutting blade provided on the slider is fixed with respect to the tweezers. Tweezers with a knife.
In the tweezers with a sliding knife according to any one of claims 1 to 3.
The cutting blade fixing mechanism is
The locked portion provided on the slider is composed of a locked magnet having either N pole or S pole polarity.
The locking portion provided on the tweezers consists of a locking magnet provided inside the tweezers and having the opposite polarity to the locked magnet.

When using the cutting function with the cutting blade of tweezers with a sliding knife
By attracting the locked magnet on the slider side and the locking magnet on the tweezers side by the action of magnetic force, the relative position of the cutting blade provided on the tweezers is fixed to the tweezers. The feature is tweezers with a sliding knife.
In the tweezers with a sliding knife according to any one of claims 1 to 5.
The cutting blade is configured to be removable from the insertion groove provided in the slider.

A replacement tool member, which is formed so that one end side has a tool function other than the cutting blade and the other end side is detachably formed in the insertion groove.
Tweezers with a sliding knife, characterized by being configured to have more.
In the tweezers with a sliding knife according to any one of claims 1 to 6.

A thick cylindrical hollow pipe mounted around a shaft rod fixed to a slider,
A pop-out prevention mechanism that is rotatably attached to the rod-shaped member of the tweezers,
Further prepare

The pop-out prevention mechanism is
A lever that is a member gripped by the user and serves as a force point when the pop-out prevention mechanism is rotated with respect to the tweezers.
A pin that serves as a fulcrum when rotating the pop-out prevention mechanism, which rotatably fixes the pop-out prevention mechanism to the tweezers by being inserted into the pop-out prevention mechanism.
A claw-shaped member provided at the tip of the pop-out prevention mechanism, which acts as a point of action for the hollow pipe of the pop-out prevention mechanism by engaging with a hollow pipe attached around the shaft rod. ,
Have,

(1) When the lever is not operated by the user and the lever is at a position away from the tweezers rod-shaped member, the pop-out prevention claw engages with the hollow pipe, so that the slider is in front of the tweezers from the return position. Prevents you from moving to
(2) When the user grips the lever and the lever approaches the tweezers rod-shaped member, the hollow pipe is released from the restraint by the pop-out prevention claw, and the slider can move forward of the tweezers from the return position. Tweezers with a sliding knife, characterized by being configured in this way.
In the tweezers with a sliding knife according to any one of claims 1 to 7.

A protective cover, which is located near the position of the cutting blade when the slider is in the return position and has a C-shaped cross section that covers the cutting blade.
Tweezers with a sliding knife, characterized by being configured to further:

Images