JPH07204366A - Blade mounting structure - Google Patents

Abstract

PURPOSE:To provide a blade mounting structure which achieves ease of handling by allowing a user to make disassembling or assembling easily. CONSTITUTION:In this structure which has bases 24 mounted at specified points of a first easing and a second casing free to load or unload, a plate-shaped fixed blade 33, a plate-shaped mobile blade 34, and a pressing spring 35 having a pressing part 35a for pressing the mobile blade 34 onto the fixed blade 33 across the thickness thereof while the fixed blade 33, the mobile blade 34 and the pressing spring 35 are mounted on the base 24 being allowed to load or unload, the pressing spring 35 is provided with a link part to integrate the fixed blade 33, the mobile blade 34 and the pressing spring 35.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blade mounting structure for a cutting instrument such as an electric razor, a hair clipper, and a garden clipper.

[0002]

2. Description of the Related Art A conventional blade mounting structure of this type will be described by taking an electric shaver for shaving down the face. For example, the casing as shown in FIGS. 10 and 11, that is, the base 24 to which the fixed blade 33, the movable blade 34, and the pressing spring 35 are removably attached is housed in the drive unit that drives the movable blade 34. Is detachably attached to a predetermined position of the.

The base 24 has two projections 24a, 24a each having a substantially prismatic shape at a predetermined location and square holes 24b at other locations. One of the two projections 24a, 24a is provided. A pin 38 having a substantially cross-shaped holding portion 38a is rotatably provided at the top of the. As shown in FIG. 11, the holding portion 38a of the pin 38 has a size L of its long diameter portion, which will be described later, in a first insertion hole 33b.
Is formed so as to be larger than the short diameter M and smaller than the long diameter N of the first insertion hole 33b. The fixed blade 33 includes a comb-teeth-shaped blade edge 33a and first insertion holes 33b, through which the protrusions 24a, 24a are inserted.
33b and a convex portion 33c to be inserted into the square hole 24b.
The movable blade 34 has a comb tooth-shaped blade edge 34a and second insertion holes 34b, 34b through which the protrusions 24a, 24a are inserted. Pressing spring 35
Is the pressing portion 35a, 35a that presses the movable blade 34 against the fixed blade 33.
And third insertion holes 35b, 35b through which the protrusions 24a, 24a are inserted.

Next, a method of attaching the fixed blade 33, the movable blade 34 and the pressing spring 35 to the base 24 will be described. First, the third insertion holes 35b, 35 of the pressing spring 35 are attached to the protrusions 24a, 24a of the base 24.
b, the second insertion holes 34b, 34b of the movable blade 34 are inserted in this order, then the convex portion 33c of the fixed blade 33 is inserted into the square hole 24b of the base 24, and the projection 24a of the base 24 is inserted. , 24a, the first insertion holes 33b, 33b of the fixed blade 33 are inserted, and finally the pin 38 is brought into a state in which the long diameter portion of the holding portion 38a thereof is related to the edge of the first insertion hole 33b of the fixed blade 33. By rotating it until it reaches the state, the fixed blade 33, the movable blade 34, and the pressing spring 35 are attached to the base 24. At this time, the fixed blade 33 is in a state of being pressed against the holding portion 38a of the pin 38 by the movable blade 34.

On the other hand, when the fixed blade 33, the movable blade 34, and the pressing spring 35 are removed from the base 24, the pin 38 has a long diameter portion of the holding portion 38a at the edge of the first insertion holes 33b, 33b of the fixed blade 33. The fixed blade 33, the movable blade 34, and the pressing spring 35 can be removed in this order from the base 24 by rotating until the state where they do not depend on the section.

[0006]

SUMMARY OF THE INVENTION In the conventional electric shaver described above, when the navel hair is shaved, the hair scraps cut in the gap between the fixed blade and the casing and the gap between the movable blade and the base stand. When it gets in, and a large amount of hair dust accumulates, the sharpness of the fixed blade and the movable blade may decrease, or the load on the movable blade may increase and the movable blade may not operate normally.

For this reason, the user must remove the base from the casing after use or from time to time and rotate the pin to remove the fixed blade, the movable blade, and the pressing spring from the base to remove the hair dust. . However, since the pin is very small and has to rotate with the fixed blade being pressed against the holding portion, it has been difficult to rotate. Further, there is a problem that once disassembled, it is difficult to assemble the next time when assembling.

The present invention has been made in view of the above points, and an object of the present invention is to provide a blade mounting structure which is easy for a user to disassemble and assemble and which is easy to use.

[0009]

In order to achieve the above object, a blade mounting structure according to a first aspect of the present invention is a plate having a base that is detachably attached to a predetermined portion of a casing and a blade having an edge at the end. -Shaped fixed blade, a plate-shaped movable blade having a blade tip at the end, and a pressing spring having a pressing portion that presses the movable blade against the fixed blade in the thickness direction, the fixed blade and the movable blade on the base. In a blade mounting structure in which a pressing spring is detachably mounted, any one of the fixed blade, the movable blade, and the pressing spring is provided with a connecting portion that integrates these.

In the blade mounting structure according to a second aspect of the present invention, there is provided a base which is removably mounted at a predetermined position of the casing, a plate-shaped fixed blade having an edge at the end, and an edge at the end. A plate-shaped movable blade and a pressing spring having a pressing portion that presses the movable blade against the fixed blade in the thickness direction, and a blade in which the fixed blade, the movable blade, and the pressing spring are detachably attached to the base. In the mounting structure, a connecting member that integrates the fixed blade, the movable blade, and the pressing spring is provided.

The blade mounting structure according to a third aspect of the present invention is the fixed blade according to the first or second aspect, the movable blade, the pressing spring,
A drive guide for restricting the moving direction of the movable blade is provided on any one of the connecting members.

According to a fourth aspect of the present invention, there is provided a mounting structure for a blade, which is detachably mounted on a predetermined portion of a casing and has a base having a projection, a cutting edge provided at an end and a projection of the base. A plate-shaped fixed blade having a first insertion hole through which is inserted, and a second insertion hole through which the blade tip provided at the end and the protrusion of the base are inserted; A pressing spring having a pressing portion for pressing the movable blade against the fixed blade in the thickness direction and a third insertion hole through which the projection of the base is inserted, and the projection of the base is movable to the third insertion hole of the pressing spring. In the blade mounting structure in which the fixed blade is held in the state of being inserted through the second insertion hole of the blade and the first insertion hole of the fixed blade in this order, the first protrusion of the fixed blade is attached to the protrusion of the base. It is configured such that a locking portion that locks the edge portion of the insertion hole is provided.

According to a fifth aspect of the present invention, there is provided a blade mounting structure according to the fourth aspect, wherein the fixed blade is provided with a fitting portion, and the projection of the base is fitted into the fitting portion so that the fixed blade has a thickness direction. On the other hand, a stopper is provided to prevent the movement in a substantially orthogonal direction.

According to a sixth aspect of the present invention, there is provided a blade mounting structure according to the fourth aspect, wherein the fixed blade is provided with a fitting portion, and the casing is fitted into the fitting portion so that the fixed blade is substantially in the thickness direction. A stopper is provided to prevent movement in the orthogonal direction.

The blade mounting structure according to claim 7 is such that the fixed blade according to any one of claims 4 to 6 is provided with a slip stopper on the side surface opposite to the movable blade. .

The blade mounting structure according to claim 8 is the blade tip of a fixed blade according to any one of claims 1 to 7 and / or
Alternatively, a cutting debris entry preventing wall that prevents the cutting debris from entering the inside of the base and / or the casing is provided near the root of the cutting edge of the movable blade.

[0017]

According to the structure of the first aspect, the fixed blade, the movable blade and the pressing spring can be detachably attached to the base by the connecting portion.

According to the second aspect of the present invention, the fixed blade, the movable blade and the pressing spring can be detachably attached to the base by the connecting member.

According to the third aspect of the present invention, the moving direction of the movable blade can be regulated in the state where the fixed blade, the movable blade and the pressing spring are integrated, and the downsizing of the state can be realized. You can

According to the fourth aspect of the invention, the fixed blade can be easily held on the base simply by locking the edge of the first insertion hole of the fixed blade to the locking portion.

According to the fifth aspect of the invention, the fixed blade can always be held at the normal position.

According to the structure of claim 6, the fixed blade can always be held at the normal position.

According to the structure of claim 7, since the cleat makes it difficult for a finger or the like to slip on the side surface of the fixed blade,
The fixed blade can be easily locked or disengaged from the locking portion.

According to the structure described in claim 8, it is possible to make it difficult for the cutting debris to enter the inside of the base and / or the casing by the cutting debris entry preventing wall.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the blade attachment structure will be described by taking an electric shaver for shaving down the face as an example.

The electric shaver for shaving down the face of this embodiment comprises a main body 1 and a blade head 2 detachably connected to one end of the main body 1.

First, the main body 1 will be described. Body 1
The outer shell is composed of a cylindrical main body casing 11, a receiving tube 12 attached to one end of the main body casing 11, and a battery cover 13 screwed to the other end of the main body casing 11. Inside, a battery 14, a motor 16 held by a holder 15, a drive shaft 17 fixed to the output shaft of the motor 16,
The drive shaft 17 accommodates a joint 19 arranged via a spring 18. A switch 20 for turning on / off the power source from the battery 14 to the motor 16 is provided on the side surface of the main body casing 11.

Next, the blade head 2 will be described. The blade head 2 has an outer shell having a first casing 21, a second casing 22 coupled to the first casing 21, and a first casing 21.
Base 24 removably attached to the opening formed by the casing 21 and the second casing 22 of the push button 23.
It consists of and. In addition, the first casing 21 and the second
The casing 22 of the
A connecting tube (25) that can fit into the receiving tube (12) is formed. Bearings 26 are provided inside the first casing 21 and the second casing 22.
Of the rotary shaft 27, a pinion 28 fixed to one end of the rotary shaft 27, a coupling 29 connectable to a joint 19 fixed to the other end of the rotary shaft 27, and a pinion 28 arranged so as to mesh with the pinion 28. A gear 31 having an eccentric shaft 30 installed, and an eccentric shaft at one end
A connecting rod connected to 30 and the other end to a movable blade 34 described later.
It houses 32 and.

The base 24 has two projections 24a, 24a each having a substantially prismatic shape at a predetermined location and square holes 24b at other locations. The fixed blade 33, the movable blade 34 and the pressing spring 35 are provided. A blade block 36 composed of and is detachably attached.

The individual components of the blade block 36 will be described. The fixed blade 33 is formed of a metal or the like in a thin plate shape, and has a comb tooth-shaped blade tip 33a, first insertion holes 33b and 33b into which the projections 24a and 24a are inserted, and a convex portion 33c to be inserted into the square hole 24b. And have. The movable blade 34 is formed of a metal or the like into a thin plate shape, and has a comb tooth-shaped blade tip 34a and second insertion holes 34b and 34b through which the protrusions 24a and 24a are inserted. Pressing spring 35
Is made of metal or the like, and the movable blade 34 is fixed to the fixed blade 35.
The movable blades 34a, 35a, the third insertion holes 35b, 35b into which the protrusions 24a, 24a are press-fitted, the first insertion holes 33b, 33b and the second insertion holes 34b, 34b. Drive guides 35c, 35c for restricting the direction of movement of the drive guides, and hooks 35d, 35d formed at the ends of the drive guides 35c, 35c.

In constructing the blade block 36, first, the drive guides 35c, 35c are provided with the second insertion holes 34b, 34b and the first insertion holes.
33b, 33b are inserted in this order, and the hooks 35d, 35d are hooked on the edges of the first insertion holes 33b, 33b of the fixed blade 33, whereby the fixed blade 33, the movable blade 34 and the pressing spring 35 are integrally connected. (That is, the drive guides 35c, 35c and the hooks 35d, 35d correspond to the connecting portion of the present invention). At this time, the pressing portions 35a, 35a press the movable blade 34 against the fixed blade 33, and the drive guides 35c, 35c are in a state of restricting the operation direction of the movable blade 34. It becomes slidable in the longitudinal direction while being pressed in the thickness direction.

Next, a method of using this embodiment will be described. When attaching the blade block 36 to the base 24, the square hole 24b
It is performed by inserting the convex portion 33c into the projection and pressing the third insertion holes 35b and 35b into the projections 24a and 24a. At this time, the first insertion holes 33b, 33b and the second insertion holes 34b, 34b
Has been inserted into the protrusions 24a, 24a. Base 24
When removing the blade block 36 from the
Pull from 24 with more than a predetermined force to insert the third insertion holes 35b, 35b
Is separated from the protrusions 24a, 24a.

When the blade head 2 is connected to the main body 1 with the base 24 to which the blade block 36 is attached attached to the first casing 21 and the second casing 22, the connecting pipe 25 is connected to the receiving pipe 12. When mated, coupling 29 and fitting
It will be in a state of being connected with 19. When the switch 20 is turned ON, power is supplied from the battery 14 to the motor 16 and the motor 16 is driven, so that the movable blade 34 slides back and forth with respect to the fixed blade 33 and can be cut by the fixed blade 33 and the movable blade 34. It will be in a state. When the switch 20 is turned off, the battery 14 to the motor 16
The motor 16 is stopped because the power to the motor is cut off.

As described above, in this embodiment, since the blade block 36 can be detachably attached to the base 24, it is easy for the user to disassemble and assemble, and the gap between the base 24 and the blade block 36, It is possible to easily clean the cutting chips and the like that have entered the gap between the second casing 22 and the blade block 36.

In this embodiment, the drive guides 35c, 35c
Although the hooks 35d, 35d are used as the connecting portions, the present invention is not limited to this. For example, the connecting portions may be provided on other parts of the pressing spring 36, the fixed blade 33, or the movable blade 34. It may be provided.

Further, in the present embodiment, the cutting edge 33a of the fixed blade 33 is
Although the blade edge 34a of the movable blade 34 has a comb tooth shape, the present invention is not limited to this, and may be a sharp blade such as a cutter knife.

Further, in the present embodiment, the electric razor for shaving down the face was described as an example, but the present invention is not limited to this, and for example, an electric razor for shaving and a shaver. It may be applied to a cutting device such as a hair clipper or a garden clipper.

Next, a second embodiment of the present invention will be described with reference to FIG. It should be noted that members having substantially the same functions as those of the first embodiment described above are designated by the same reference numerals and the description thereof will be omitted.

In this embodiment, similarly to the first embodiment, the blade block 36 is detachably attached to the base 24. The base 24 has two roughly cylindrical protrusions 24a,
24a and square holes 24b in other places.
33, movable blade 34, pressing spring 35, connecting member 37 and pins 38, 38
A blade block 36 consisting of is detachably attached.

The individual constituent members of the blade block 36 will be described. The fixed blade 33 includes a blade tip 33a and first insertion holes 33b, 33.
The movable blade 34 has a blade tip 34a
And the second insertion holes 34b, 34b, and the pressing spring 35
Has pressing portions 35a, 35a and third insertion holes 35b, 35b. The connecting member 37 is inserted into the first insertion holes 33b, 33b, the second insertion holes 34b, 34b, and the third insertion holes 35b, 35b to drive guides 37a, 37a for restricting the operation direction of the movable blade 34. , Connecting holes 37b, 37b formed at one end of the drive guides 37a, 37a
And a hole (not shown) into which the protrusions 24a, 24a are press fitted. The pin 38 has a holding portion 38 having a substantially cross shape on the top thereof.
have a.

When constructing the blade block 36, first, the drive guides 37a, 37a are provided with the third insertion holes 35b, 35b and the second insertion holes.
34b, 34b and the first insertion holes 33b, 33b are inserted in this order, and the pins 38, 38 are press-fitted into the connection holes 37b, 37b to hold the holding portion 38.
Since a locks the edges of the first insertion holes 33b, 33b of the fixed blade 33, the fixed blade 33, the movable blade 34 and the pressing spring 35 are integrally connected.

When the blade block 36 is attached to the base 24,
Insert the protrusion 33c into the square hole 24b and insert the protrusions 24a and 24a.
It is performed by press-fitting the hole of the connecting member 37 into the. Base
The removal of the blade block 36 from 24 is performed by pulling the blade block 36 from the base 24 with a force equal to or more than a predetermined value to separate the hole of the connecting member 37 from the projections 24a, 24a.

As described above, in this embodiment, since the blade block 36 can be detachably attached to the base 24, it is easy for the user to disassemble and assemble, and the gap between the base 24 and the blade block 36, It is possible to easily clean the cutting chips and the like that have entered the gap between the second casing 22 and the blade block 36.

Next, a third embodiment of the present invention will be described with reference to FIGS. 6 and 7.
It will be described based on. It should be noted that members having substantially the same functions as those of the first and second embodiments described above are designated by the same reference numerals and the description thereof will be omitted.

The base 24 of this embodiment has two projections 24a, 24a each having a substantially prismatic shape, a square hole 24b, and locking portions 24c, 24c formed at one end of each projection 24a, 24a. The fixed blade 33, the movable blade 34, and the pressing spring 35 are detachably attached.

The fixed blade 33 has a cutting edge 33a, first insertion holes 33b, 33b, a convex portion 33c, and a fitting hole 33d formed at a substantially central position. The movable blade 34 has a cutting edge 34.
a and the second insertion holes 34b, 34b, and the pressing spring.
The reference numeral 35 has pressing portions 35a, 35a and third insertion holes 35b, 35b.

The second casing 22 has a fitting hole 33d.
It has a substantially rod-shaped stopper 22a that fits in.

A fixed blade 33, a movable blade 34 and a pressing spring are attached to the base 24.
A method of attaching the 35 will be described. First, the protrusion 24a,
The third insertion holes 35b, 35b and the second insertion holes 34b, 34b are inserted in this order in 24a, the convex portion 33c is inserted in the square hole 24b, and the first insertion holes 33b, 33b are inserted in the projections 24a, 24a. (FIG. 7A). Next, fix the fixed blade 33 to the convex portion 33c with the square hole 24b.
Slide in the direction away from the fixed blade on the locking parts 24c, 24c.
The fixed blade 33, the movable blade 34, and the pressing spring 35 are attached to the base 24 by locking the edges of the first insertion holes 33b, 33b of the 33 (FIG. 7B).

When the base 24 is attached to the second casing 22 in this state, the stopper 22a fits into the fitting hole 33d (FIG. 7 (c)), so that the fixed blade 33 is substantially in the thickness direction. The movement in the orthogonal direction is blocked by the stopper 22a. Therefore, the fixed blade 33 is
The state is securely held by 24c, 24c and the stopper 22a.

From the above, in the present embodiment, the locking portions 24c, 24c
The fixed blade 33 can be easily held on the base 24 by simply locking the edges of the first insertion holes 33b, 33b of the fixed blade 33 to the base 24, which facilitates disassembly and assembly for the user. Therefore, it is possible to easily clean the cutting waste and the like that have entered the gap between the base 24 and the blade block 36, the gap between the second casing 22 and the blade block 36, and the like. Further, since the fixed blade 33 can always be held at the normal position, the fixed blade 33 and the movable blade 34
The cutting property can be improved.

Next, a fourth embodiment of the present invention will be described with reference to FIG. It should be noted that members having substantially the same functions as those of the first to third embodiments described above are designated by the same reference numerals and the description thereof will be omitted.

The base 24 of this embodiment has two protrusions 24a, 24a.
A square hole 24b, locking portions 24c and 24c formed at one end of the projections 24a and 24a, and stoppers 24d and 24d formed at one end of the locking portions 24c and 24c in a substantially orthogonal direction. Cage, fixed blade 3
3, the movable blade 34 and the pressing spring 35 are detachably attached.

The fixed blade 33 includes a cutting edge 33a, first insertion holes 33b and 33b, a convex portion 33c, and first insertion holes 33b and 33b.
It has fitting holes 33d, 33d formed at the edge of 33b and a non-slip 33e formed in a convex shape in the approximate center, and the movable blade 34
Has a blade edge 34a and second insertion holes 34b, 34b. The pressing spring 35 has pressing portions 35a, 35a and a third insertion hole 35a.
b and 35b.

A fixed blade 33, a movable blade 34 and a pressing spring are attached to the base 24.
A method of attaching the 35 will be described. First, the protrusion 24a,
The third insertion holes 35b, 35b and the second insertion holes 34b, 34b are inserted in this order in 24a, the convex portion 33c is inserted in the square hole 24b, and the first insertion holes 33b, 33b are inserted in the projections 24a, 24a. Through. Next, while pressing the fixed blade 33 in the thickness direction, the convex portion 33
Slide c away from square hole 24b. At this time, if a finger or the like is brought into contact with the slip stopper 33e, the slip stopper 33e makes it difficult for the finger or the like to slip, so that the fixed blade 33 can slide easily.

Then, when a finger or the like is released from the fixed blade 33, the fixed blade 33 moves in a direction (upward direction in the figure) opposite to the pressing direction by the urging force of the pressing spring 35, and is fitted. The fitting holes 33d, 33d and the stoppers 24d, 24d are fitted to each other, and the edge portions of the first insertion holes 33b, 33b are engaged with the locking portions 24c, 24d.
It is locked to c. Therefore, the fixed blade 33, the locking portion 24c,
24c and the stoppers 24d, 24d are securely held.

From the above, in this embodiment, the locking portions 24c, 24c
The fixed blade 33 can be easily held on the base 24 by simply locking the edges of the first insertion holes 33b, 33b of the fixed blade 33 to the base 24, which facilitates disassembly and assembly for the user. Therefore, it is possible to easily clean the cutting waste and the like that have entered the gap between the base 24 and the blade block 36, the gap between the second casing 22 and the blade block 36, and the like. Further, since the fixed blade 33 can always be held at the normal position, the fixed blade 33 and the movable blade 34
The cutting property can be improved.

Next, a fifth embodiment of the present invention will be described with reference to FIG. It should be noted that members having substantially the same functions as those of the first to fourth embodiments described above are designated by the same reference numerals and the description thereof will be omitted.

The fixed blade 33 of the present embodiment is provided with a cutting debris entry prevention wall 33f near the cutting edge 33a to prevent the cutting debris from entering the inside of the second casing 22. Also, movable blade
In the vicinity of the cutting edge 34a, the cutting blade 34 is provided with a cutting debris intrusion prevention wall 34c for preventing cutting debris from entering the inside of the base 24.

These cutting debris intrusion prevention walls 33f and 34c are made of metal or resin, and are sufficient to shield the gap between the fixed blade 33 and the second casing 22 and the gap between the movable blade 34 and the base 24. In addition, it has a height that does not affect the skin contact, sharpness, and cutting height during use. Also, a wall for preventing cutting chips from entering
If the 33f and 34c are formed of Teflon resin or the like, the sliding condition between them and the skin can be further improved.

As described above, in the present embodiment, the cutting debris intrusion prevention walls 33f and 34c prevent the cutting debris from entering the inside of the second casing 22 and the base 24, so that the fixed blade 33 and the movable blade
It is possible to make it difficult to adversely affect the cutting performance by the 34 and the drive of the movable blade 34, and to reduce the number of cleanings.

In the present embodiment, the cutting debris entry prevention wall 33
Although the f and 34c are provided on the fixed blade 33 and the movable blade 34, the present invention is not limited to this, and for example, a cutting debris entry prevention wall is provided on either the fixed blade or the movable blade. May be.

[0062]

According to the blade mounting structure of the first aspect of the present invention, the fixed blade, the movable blade and the pressing spring can be detachably attached to the base together with the connecting portion. It is easy to assemble and the inside can be easily cleaned.

In the blade mounting structure according to the second aspect, the fixed blade, the movable blade, and the pressing spring can be detachably mounted on the base together with the connecting member, so that the user can disassemble or assemble the blade. This makes it easier to clean the inside.

According to a third aspect of the present invention, there is provided a blade mounting structure according to the first aspect.
Alternatively, in addition to the effect described in 2, in the state where the fixed blade, the movable blade, and the pressing spring are integrated, the operation direction of the movable blade can be regulated, and miniaturization of the above state can be realized.

In the blade mounting structure according to the fourth aspect, the fixed blade can be easily held on the base simply by locking the edge of the first insertion hole of the fixed blade to the locking portion. It becomes easier for the user to disassemble and assemble, and the inside can be easily cleaned.

According to a fifth aspect of the present invention, there is provided a blade mounting structure according to the fourth aspect.
In addition to the effects described above, the fixed blade can always be held at the normal position, so that the cutting performance of the fixed blade and the movable blade can be improved.

According to a sixth aspect of the present invention, there is provided a blade mounting structure according to the fourth aspect.
In addition to the effects described above, the fixed blade can always be held at the normal position, so that the cutting performance of the fixed blade and the movable blade can be improved.

According to a seventh aspect of the present invention, there is provided a blade mounting structure according to the fourth aspect.
In addition to the effect according to any one of to 6 above, since the slip stopper makes it difficult for a finger or the like to slip on the side surface of the fixed blade, the fixed blade can be easily locked or disengaged from the locking portion, and as a result, Disassembly and assembly can be performed more easily.

The blade mounting structure according to claim 8 is the same as that according to claim 1.
In addition to the effect described in any one of 1 to 7, since the cutting debris entry prevention wall makes it difficult for the cutting debris to enter the inside of the base and / or the casing, the cutting performance by the fixed blade and the movable blade and the driving of the movable blade are adversely affected. Can be made difficult and
The number of cleanings can be reduced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of essential parts of a first embodiment of the present invention.

FIG. 2 is a front view of the blade head.

FIG. 3 is a side view of the blade head.

FIG. 4 is a sectional view thereof.

FIG. 5 is an exploded perspective view of essential parts of a second embodiment of the present invention.

FIG. 6 is an exploded perspective view of essential parts of a third embodiment of the present invention.

FIG. 7: Method for holding the fixed blade ((a) → (b) →
It is a fragmentary sectional view showing (c).

FIG. 8 is a partial sectional view of a fourth embodiment of the present invention.

FIG. 9 is a cross-sectional view of a blade head according to a fifth embodiment of the present invention.

FIG. 10 is an exploded perspective view of a main part of a conventional example.

FIG. 11 is a side view of an essential part showing a state in which the base is removed.

[Explanation of symbols]

 22 2nd casing 22a Stopper 24 Base 24a Protrusion 24c Locking part 24d Stopper 33 Fixed blade 33a Blade edge 33b First insertion hole 33d Fitting hole 33e Anti-slip 33f Cutting debris entry prevention wall 34 Movable blade 34a Blade edge 34b Second Insertion hole 34c Cutting waste entry wall 35 Pressing spring 35a Pressing part 35b Third insertion hole 35c Drive guide 37 Connecting member 37a Drive guide

Claims (8)

[Claims] 1. A base that is removably attached to a predetermined portion of a casing, a plate-shaped fixed blade having a cutting edge at its end, a plate-shaped movable blade having a cutting edge at its end, and a movable blade. In a blade mounting structure comprising a pressing spring having a pressing portion that presses the fixed blade in the thickness direction, and a fixed blade, a movable blade, and the pressing spring are detachably attached to the base, the fixed blade, the movable blade, A blade mounting structure in which one of the pressing springs is provided with a connecting portion that integrates them. 2. A base that is removably attached to a predetermined portion of a casing, a plate-shaped fixed blade having a blade tip at its end, a plate-shaped movable blade having a blade tip at its end, and a movable blade. A fixed blade having a pressing spring having a pressing portion that presses the fixed blade in the thickness direction, and a fixed blade, a movable blade, and a pressing spring that are detachably attached to a base, wherein the fixed blade, the movable blade, and A blade mounting structure provided with a connecting member that integrates a pressing spring. 3. The blade mounting structure according to claim 1, wherein any one of the fixed blade, the movable blade, the pressing spring, and the connecting member is provided with a drive guide for restricting a moving direction of the movable blade. 4. A base, which is detachably attached to a predetermined portion of the casing and has a protrusion, and a blade edge provided at an end portion and a first insertion hole through which the protrusion of the base is inserted. Plate-shaped movable blade having a plate-shaped fixed blade, a blade edge provided at the end and a second insertion hole through which the protrusion of the base is inserted, and pressing for pressing the movable blade against the fixed blade in the thickness direction And a pressing spring having a third insertion hole through which the protrusion of the base is inserted, the protrusion of the base being the third insertion hole of the pressing spring, the second insertion hole of the movable blade, and the fixed blade. In a blade mounting structure in which a fixed blade is held in a state where the fixed blade is inserted through these in the order of the first insertion hole, locking for locking the edge portion of the first insertion hole of the fixed blade to the protrusion of the base. Blade mounting structure with parts. 5. The fixed blade is provided with a fitting portion, and the projection of the base is provided with a stopper for fitting the fitting portion to prevent the fixed blade from moving in a direction substantially orthogonal to a thickness direction thereof. The blade mounting structure according to claim 4. 6. The fixed blade is provided with a fitting portion, and the casing is provided with a stopper for fitting the fitting portion to prevent the fixed blade from moving in a direction substantially orthogonal to a thickness direction thereof. The blade mounting structure described in 4. 7. The blade mounting structure according to claim 4, wherein the fixed blade is provided with a slip stopper on a side surface opposite to the movable blade. 8. A cutting debris intrusion prevention wall for preventing intrusion of cutting debris into the inside of the base and / or the casing is provided near the root of the cutting edge of the fixed blade and / or the cutting edge of the movable blade. The blade mounting structure according to any one of 1 to 7.