JPH10146470A - Knife - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an auto-lock type knife that facilitates assembling of a sliding body and that therefore reduces the cost. SOLUTION: The knife is so constituted that a leaf spring 4 with the center part curved in a circular-arc shape forms an engaging part 9, that the blade moves with a sliding part 5 when an operating part 8 attached to the sliding part 7 is positioned at either end of the sliding area, that the sliding part 5 is equipped with no independent means for positioning the operating part 8 in the neutral position of the sliding area, and that the most of the length of a stopper face is in contact with the lock part 12, 12 so that both ends of the lock part 12, 12 in contact with the stopper face of the leaf spring 4 is situated near the bent part of the stopper end face.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an auto lock type cutter knife. The auto-lock type cutter knife automatically locks the blade in a normal state even if a human does not operate the lock mechanism, and prevents the human from releasing the lock mechanism when sliding the blade. Even if the sliding body is pushed, the lock is automatically released and the cutter knife can slide the blade body.

[0002]

2. Description of the Related Art Various types of auto-lock type cutter knives have been proposed. Among them, Tokuhei 8-
In the invention of 15506, a leaf spring member is provided inside the sliding body, and the leaf spring member is curved substantially in a semicircle and engages with the concave-convex portion of the holder-sliding groove. An operating member having a shoulder projecting from both ends of the blade along the blade body retreating direction and legs extending substantially in a C-shape from both ends of the shoulder part, and the sliding body being movably held in the blade body retreating direction. The operating member is in contact with both the positioning portion that is almost in contact with both legs of the leaf spring member from the inside at the neutral position in the movable range with respect to the sliding body main body, and contacts the shoulder portion at the neutral position from the non-engaging portion side. On the other hand, it has a configuration in which a lock portion that comes off from one of the shoulders at both ends of the movable range is provided.

[0003] Such a conventional auto lock type cutter.
In the normal state of the knife, since the lock portion of the operating member is in contact with both the shoulders of the leaf spring member from the side opposite to the engagement portion,
Even when the blade is slid, the leaf spring member is locked and the engaging portion cannot be immersed in the slide body, so that the blade is securely locked. When the blade is slid, pressing the operating member in the sliding direction moves the operating member with respect to the sliding body main body and releases the locked state of one shoulder of the leaf spring member. Can be immersed in the body of the sliding body, and the blade can be slid.

[0004]

In the above-mentioned conventional product, the operating member has a positioning portion which is almost in contact with both legs of the leaf spring member from the inside at a neutral position in a movable range with respect to the sliding body, and a shoulder portion at the neutral position. And a lock portion that comes into contact with both of the shoulder portions at the opposite ends of the movable range and comes off from one of the shoulder portions. That is, the operation member has two operation parts, a positioning part and a lock part.

The conventional product is always in a state where the lock is easily released because the lock portion is in contact with a part of the shoulder portion of the leaf spring member. Therefore, when the operating member slides, the lock is released immediately, so that the operating member must always be reliably positioned at the neutral position. Therefore, in the conventional product, the operation member has a positioning portion. The positioning portion is always elastically pressed from both sides by both legs of the leaf spring member to maintain the neutral position. Resiliently pressing the positioning portion between the two legs of the leaf spring member means that when the positioning portion is removed, the width of the two legs of the leaf spring member is smaller than the width of the positioning portion.
Therefore, when assembling the sliding body, if it is attempted to mount the operating member from above the sliding body main body containing the leaf spring member, a positioning portion wider than the width of both legs of the leaf spring member must be inserted between the two legs. In such a case, since the positioning portion hits both legs as it is, a step of expanding both legs is required. However, the operation of inserting the positioning portion with both legs widened is not a simple process.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to easily assemble a sliding body without providing a positioning portion separately, thereby eliminating the need for a step of expanding both legs of a leaf spring member when assembling the sliding body. It is.

[0007]

According to the present invention, there is provided a holder having a plurality of concave / convex portions provided with a sliding groove in a longitudinal direction thereof and continuous with an inner edge of the sliding groove; A sliding body 5 which is slidable in the moving groove 1 and which is moved and fixed by engaging and disengaging a built-in leaf spring 4 with the uneven portion 2.
And a blade body 6 that is inserted into the sliding groove 1 and connected to the sliding body 5 and is moved and fixed together with the sliding body 5. The sliding body 5 includes a sliding body 7 connected to the blade body 6. A slide spring 4 housed inside the sliding body 7 and an operating section 8 mounted on the upper surface of the sliding body 7 and slidably mounted on the sliding body 7 in the longitudinal direction. The leaf spring 4 provided inside the sliding body 7 is fixed so that the blade 6 is fixed without operating the operating section 8 and the blade 6 slides together with the sliding body 5 in the direction in which the operating section 8 is slid. The central portion is curved in an arc shape to form an engaging portion 9, which projects from the side surface of the sliding body 7 and engages with the uneven portion 2 of the sliding groove, and the leaf spring 4 slides. Elastic portions 10, 10 are formed in the moving body 7 in an eight-character shape, and extend in the longitudinal direction of the sliding body at the boundary between the elastic portions 10, 10 and the engaging portion 9. The operating portion 8 is provided with two stopper surfaces 11, 11 and a locking portion 12 extending from the back surface of the operating portion 8 into the octagonal leaf spring 4 and contacting the stopper surfaces 11, 11. When the operation unit 8 is positioned at either end of the sliding range, the lock unit 1
In the cutter-knife in which the blade body 6 moves together with the slide body 5 due to the removal of 2 from one of the stopper surfaces 11,
The sliding body 5 is not provided with independent positioning means for positioning the operating portion 8 at the neutral position in the sliding range, and both ends of the lock portion 12 in contact with the stopper surfaces 11, 11 are provided at the stopper surfaces 11, 11, 11. Bent portion 1 at the boundary between the elastic portions 10 and 10
Stopper surfaces 11 and 11 are located near
Is characterized in that most of the lengths are in contact with the lock portions 12, 12.

In the present invention, when the blade is slid, when the operating portion 8 is moved in the direction in which the blade is slid, the contact state between one of the stopper surfaces 11 and the lock portion 12 in contact therewith is obtained. Since the engagement portion 9 is disengaged and immersed in the slide body, the blade body 6 can slide with the slide body 5. In a normal state, since both stopper surfaces 11, 11 are in contact with the lock portion 12, the engagement portion 9 cannot be immersed in the slide body, and the blade body 6 is securely locked.

According to the present invention, the stoppers are provided such that both ends of the lock portion 12 contacting the stopper surfaces 11, 11 are located near the bent portions 13, 13 at the boundary between the stopper surfaces 11, 11 and the elastic portions 10, 10. -It is characterized in that most of the length of the surfaces 11, 11 is in contact with the lock portion 12. Therefore, even if there is no positioning section for positioning the operation section 8 at the neutral position, the range in which the operation section 8 can freely move is small. Further, since most of the lengths of the stopper surfaces 11, 11 are in contact with the lock portion 12, even if the operating portion 8 moves to some extent, the stopper surfaces 11, 11 and the lock portion 12 are still in contact. There is no possibility that the locked state of the engaging portion 9 is released.

As described above, in the present invention, it is not necessary to press the positioning portion from both sides with a leaf spring in order to position the operation portion 8 at the neutral position. Therefore, the leaf spring 4 does not need to be opened when inserting the lock portion 12 of the operation section 8 into the slide body 7 when assembling the slide body 5, so that the assembly is very simple.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. The holder 3 is provided with a sliding groove 1 for slidably inserting the blade body 6 over the entire length, and a plurality of continuous uneven portions 2 are provided on one inner edge of the sliding groove. .

The sliding body 5 comprises a sliding body 7, a leaf spring 4 provided therein, and an operation section 8. The sliding body 7 has a hollow portion 14 therein, in which the leaf spring 4 is provided. The cavity 14 has an opening 17 on the upper surface.
A leaf spring 4 is formed from the opening 17 by the hollow portion 14.
It will be decorated inside. The leaf spring 4 has a central portion curved in an arc shape to form an engaging portion 9, which projects from the side surface of the sliding body 7 and engages with the uneven portion 2 of the holder. The leaf spring 4 spreads in an octagonal shape in the sliding body 7 to form an elastic portion 10,
And two stopper surfaces 11, extending in the longitudinal direction of the sliding body at the boundary between the elastic portions 10, 10 and the engaging portion 9.
11 are formed. The leaf spring 4 of this shape can be made by pressing a flat and elongated metal plate.

A pair of flanges 15 are provided on both sides of the upper surface of the sliding body 7 in the longitudinal direction. Inwardly extending grooves 16 are provided on both sides of the lower surface of the operation portion 8 so as to correspond to the flanges 15. Flange 1
The operation portion 8 is slidably mounted on the slide body 7 by fitting the grooves 5 and 15 into the grooves 16 and 16.

As described above, the operating portion 8 is provided with the grooves 16 on both sides on the lower surface, and furthermore, on the back surface thereof, two columnar lock portions 12 are integrally provided. The lock portion does not need to be divided into two as shown in the drawing, and may be one lock portion that is elongated and integrally formed. When attaching the operation unit 8 to the slide body 7, the lock unit 12,
12 is inserted into the cavity 14 through the opening 17. The inserted lock portions 12,12 are located between the elastic portions 10,10 in the shape of an octagon, and are in contact with most of the length of the stopper surfaces 11,11. Lock portion 1 in contact with stopper surfaces 11, 11
The end portions of the stopper portions 11 and 11 and the elastic portion 1
The lengths of the lock portions 12, 12 are set so as to be located near the bent portions 13, 13 at the boundary of 0, 10. The term "around the bent portion" is intended to include a case where it almost reaches the bent portions 13 and 13. As a result, the operating portion 8 can slide with a small force on the sliding body 7, but when the ends of the lock portions 12 reach the bent portions 13, the sliding is prevented, and No further sliding is possible without applying force.

A projection 18 provided on a front portion of the sliding body.
Is for connecting the blade body 6. Since the blade body 6 is connected to the slide body 7, it slides back and forth with the slide of the slide body 5.

In the cutter knife of the present invention, both stopper surfaces 11, 11 are in contact with the lock portion 12, as shown in FIG. Therefore, even if the blade body 6 is pulled forward or pushed backward, the stopper surfaces 11, 1 are not required.
1 is blocked by the lock portion 12 and the engagement portion 9 is
Since the blade body 6 cannot be immersed inside, the blade body 6 is securely locked without moving.

FIG. 4 shows a state in which the blade body 6 is slid forward. When the operating portion 8 is slid forward, the lock portions 12, 12 also move forward. When the operating portion 8 is further pushed forward by applying a force, the lock portion 12 at the front advances while pushing and expanding the elastic portion 10 at the front, so that the lock portion 12 at the rear also advances and the stopper at the rear. The contact state with the surface 11 is released, and the locked state of this portion is released. As a result, the engaging portion 9 can be immersed in the sliding body 7, so that the engaging portion 9 can slide the blade body 6 forward while repeating intermittent immersion.

FIG. 5 shows a state in which the blade body 6 is slid rearward. When the operating portion 8 is slid rearward, the lock portions 12, 12 also move rearward. When the operating portion 8 is further pushed rearward by applying a force, the locking portion 12 at the rear is retracted while pushing and expanding the elastic portion 10 at the rear, so that the locking portion 12 at the front is also retracted and the front stopper is moved. The contact state with the surface 11 is released, and the locked state of this portion is released. As a result, the engaging portion 9 can be immersed in the sliding body 7, so that the engaging portion 9 can slide the blade body 6 backward while intermittently repeating the immersion.

In the embodiment of the present invention, as shown in the drawings, both ends of the lock portion 12 contacting the stopper surfaces 11, 11 are bent at the boundary between the stopper surfaces 11, 11 and the elastic portions 10, 10. Stopper to be located near 13,13
Most of the lengths of the surfaces 11 and 11 are in contact with the lock portions 12 and 12, but both ends of the lock portion 12 are bent portions 1.
It does not completely reach 3, 13 and has a little play. Therefore, the operation unit 8 freely moves by the amount of this play, but within the movement range of that amount, the stopper surfaces 11,
Since the contact between the lock 11 and the lock portions 12 is not released and the locked state is not released, no inconvenience occurs when using the cutter knife.

[0020]

According to the present invention, the sliding member 5 is not provided with independent positioning means for positioning the operating portion 8 at the neutral position of the sliding range, and the stopper 5 is not provided.
Both ends of the lock portion 12 in contact with the surfaces 11, 11 are bent portions 1 at the boundary between the stopper surfaces 11, 11 and the elastic portions 10, 10.
Stopper surfaces 11 and 11 are located near
Most of the length is in contact with the lock portions 12, 12. Therefore, since there is no means for positioning the operation unit 8 at the neutral position, play occurs in the operation unit 8, and the operation unit 8 moves freely by the play, but the locked state is not released. Conventionally, means for positioning the operation unit 8 at the neutral position is indispensable. For this purpose, it is necessary to provide a positioning unit on the operation unit 8 and press the positioning unit from both sides with a leaf spring formed narrower than that. Was. Therefore, when the lock portion 12 is inserted into the main body of the slide body when the slide body 5 is assembled, the lock portion 12 comes into contact with the eight-shaped leaf spring 4 formed narrower than the lock portion 12, so that a step of expanding the leaf spring 4 is necessary. Met. In the present invention, the step of expanding the leaf spring 4 is unnecessary, so that the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a sliding body.

FIG. 2 is a perspective view of the present invention.

FIG. 3 is a front view showing a state where a blade body is locked.

FIG. 4 is a front view of a state where the blade body is slid forward;

FIG. 5 is a front view of a state in which the blade body is slid backward.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sliding groove 2 Uneven part 3 Holder 4 Leaf spring 5 Sliding body 6 Blade body 7 Sliding body 8 Operating part 9 Engaging part 10 Elastic part 11 Stopper face 12 Lock part 13 Bend part 14 Cavity part 15 Flange 16 Groove 17 Open port 18 Projection

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[Procedure amendment]

[Submission date] January 19, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Cutter knife

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an auto-lock type cutter knife. An auto-locking cutter knife is a knife that automatically locks the blade in a normal state without the need for a human to operate the lock mechanism, and allows the user to release the lock mechanism when sliding the blade. This is a cutter knife that is automatically unlocked just by pressing the sliding body and can slide the blade body.

[0002]

2. Description of the Related Art Various types of auto-lock type cutter knives have been proposed. Among them, Tokuhei 8-
According to the invention of 15506, a leaf spring member is provided inside the sliding body, and the leaf spring member is curved substantially in a semicircle and engages with the concave and convex portion of the holder sliding groove. It has a shoulder projecting from both ends along the blade body retreating direction and legs extending almost in a U shape from both ends of the shoulder, and the sliding body has an operating member movably held in the blade body retreating direction. The operating member is attached to the positioning portion that is substantially in contact with both legs of the leaf spring member from the inside at the neutral position in the movable range with respect to the sliding body, and contacts the shoulder at the neutral position from the non-engaging portion side. On the other hand, it has a configuration provided with a lock portion that comes off from one of the shoulders at both ends of the movable range.

In such a conventional auto-locking cutter knife, the lock portion of the operating member is in contact with both shoulders of the leaf spring member from the side opposite to the engaging portion in a normal state.
Even when the blade is slid, the leaf spring member is locked and the engaging portion cannot be immersed in the slide body, so that the blade is securely locked. When the blade is slid, pressing the operating member in the sliding direction moves the operating member with respect to the sliding body main body and releases the locked state of one shoulder of the leaf spring member. Can be immersed in the body of the sliding body, and the blade can be slid.

[0004]

In the above-mentioned conventional product, the operating member has a positioning portion which is almost in contact with both legs of the leaf spring member from the inside at a neutral position in a movable range with respect to the sliding body, and a shoulder portion at the neutral position. And a lock portion that comes into contact with both of the shoulder portions at the opposite ends of the movable range and comes off from one of the shoulder portions. That is, the operation member has two operation parts, a positioning part and a lock part.

The conventional product is always in a state where the lock is easily released because the lock portion is in contact with a part of the shoulder portion of the leaf spring member. Therefore, when the operating member slides, the lock is released immediately, so that the operating member must always be reliably positioned at the neutral position. Therefore, in the conventional product, the operation member has a positioning portion. The positioning portion is always elastically pressed from both sides by both legs of the leaf spring member to maintain the neutral position. Resiliently pressing the positioning portion between the two legs of the leaf spring member means that when the positioning portion is removed, the width of the two legs of the leaf spring member is smaller than the width of the positioning portion.
Therefore, when assembling the sliding body, if it is attempted to mount the operating member from above the sliding body main body containing the leaf spring member, a positioning portion wider than the width of both legs of the leaf spring member must be inserted between the two legs. In such a case, since the positioning portion hits both legs as it is, a step of expanding both legs is required. However, the operation of inserting the positioning portion with both legs widened is not a simple process.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to easily assemble a sliding body without providing a positioning portion separately, thereby eliminating the need for a step of expanding both legs of a leaf spring member when assembling the sliding body. It is.

[0007]

According to the present invention, there is provided a holder 3 having a sliding groove 1 provided in a longitudinal direction and having a large number of concave and convex portions 2 continuous on the inner edge of the sliding groove 1; A sliding body 5 which is slidable in the groove 1 and which is moved and fixed by engaging and disengaging a built-in leaf spring 4 with the uneven portion 2.
And a blade body 6 that is inserted into the sliding groove 1 and connected to the sliding body 5 and is moved and fixed together with the sliding body 5. The sliding body 5 includes a sliding body 7 connected to the blade body 6. A slide spring 4 housed inside the sliding body 7 and an operating section 8 mounted on the upper surface of the sliding body 7 and slidably mounted on the sliding body 7 in the longitudinal direction. The leaf spring 4 provided inside the sliding body 7 is fixed so that the blade 6 is fixed without operating the operating section 8 and the blade 6 slides together with the sliding body 5 in the direction in which the operating section 8 is slid. The central portion is curved in an arc shape to form an engaging portion 9, which projects from the side surface of the sliding body 7 and engages with the uneven portion 2 of the sliding groove, and the leaf spring 4 slides. Elastic portions 10, 10 are formed in the moving body 7 in an eight-character shape, and extend in the longitudinal direction of the sliding body at the boundary between the elastic portions 10, 10 and the engaging portion 9. A lock portion 12 is formed on the operating portion 8 and has two stopper surfaces 11, 11 extending from the back surface of the operating portion 8 into the octagonal leaf spring 4 and contacting the two stopper surfaces 11, 11. When the operation unit 8 is located at either end of the sliding range, the lock unit 1
In a cutter knife in which the blade body 6 moves together with the sliding body 5 when the blade 2 comes off the one stopper surface 11,
By setting the length of the lock portion 12 such that both ends of the lock portion 12 are located near the bent portions 13 at the boundary between the stopper surfaces 11 and the elastic portions 10 , the operation is performed.
The range in which the portion 8 can freely move is small, and most of the length of the stopper surfaces 11, 11 are in contact with the lock portions 12, 12.

In the present invention, when the blade is slid, when the operating portion 8 is moved in the direction in which the blade is slid, the contact state between the one stopper surface 11 and the lock portion 12 in contact therewith is released. As a result, the engagement portion 9 is immersed in the slide body, so that the blade body 6 can slide with the slide body 5. In a normal state, since both stopper surfaces 11, 11 are in contact with the lock portion 12, the engagement portion 9 cannot be immersed in the slide body, and the blade body 6 is securely locked.

In the present invention , both ends of the lock portion 12 are
Bending portion 1 at the boundary between par surfaces 11 and 11 and elastic portions 10 and 10
Set the length of the lock part 12 so that it is
By doing so, the range in which the operation unit 8 can freely move is small. Therefore, even if there is no positioning section for positioning the operation section 8 at the neutral position, the range in which the operation section 8 can freely move is small. Further, since most of the lengths of the stopper surfaces 11 and 11 are in contact with the lock portion 12, even if the operation portion 8 moves to some extent, the stopper surfaces 11 and 11 and the lock portion 12 are still in contact with each other. There is no possibility that the locked state of the unit 9 is released.

As described above, in the present invention, it is not necessary to press the positioning portion from both sides with a leaf spring in order to position the operation portion 8 at the neutral position. Therefore, the leaf spring 4 does not need to be opened when inserting the lock portion 12 of the operation section 8 into the slide body 7 when assembling the slide body 5, so that the assembly is very simple.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. The holder 3 is provided with a sliding groove 1 for slidably inserting the blade body 6 over the entire length, and a plurality of continuous uneven portions 2 are provided on one inner edge of the sliding groove.

The sliding body 5 comprises a sliding body 7, a leaf spring 4 provided therein, and an operation section 8. The sliding body 7 has a hollow portion 14 therein, in which the leaf spring 4 is provided. The cavity 14 has an opening 17 on the upper surface.
A leaf spring 4 is formed from the opening 17 by the hollow portion 14.
It will be decorated inside. The leaf spring 4 has a central portion curved in an arc shape to form an engaging portion 9, which projects from the side surface of the slide body 7 and engages with the uneven portion 2 of the holder. The leaf spring 4 spreads in an octagonal shape in the sliding body 7 to form an elastic portion 10,
And two stopper surfaces 11, extending in the longitudinal direction of the sliding body at the boundary between the elastic portions 10, 10 and the engaging portion 9.
11 are formed. The leaf spring 4 of this shape can be made by pressing a flat and elongated metal plate.

A pair of flanges 15 are provided on both sides of the upper surface of the sliding body 7 in the longitudinal direction. Inwardly extending grooves 16 are provided on both sides of the lower surface of the operation portion 8 so as to correspond to the flanges 15. Flange 1
The operation portion 8 is slidably mounted on the slide body 7 by fitting the grooves 5 and 15 into the grooves 16 and 16.

As described above, the operating portion 8 is provided with the grooves 16 on both sides of the lower surface .
Two columnar lock portions 12, 12 are provided integrally between them. The lock portion does not need to be divided into two as shown in the drawing, and may be one lock portion that is elongated and integrally formed. When the operation section 8 is attached to the sliding body 7, the lock sections 12 are inserted into the hollow section 14 through the opening 17. The inserted lock portions 12,12 are located between the elastic portions 10,10 in the shape of an octagon, and have the stopper surfaces 11,11.
Touches most of the length of. The ends of the lock portions 12, 12 in contact with the stopper surfaces 11, 11 are
The lengths of the lock portions 12 are set so as to be located near the bent portions 13 at the boundary between the elastic portions 10 and the elastic portions 10. The vicinity of the bent portion is almost the bent portion 13, 13
The purpose is to include the case where the message has arrived. As a result, the operating portion 8 can slide with a slight force on the sliding body 7, but the ends of the lock portions 12, 12 are bent,
When it reaches 13, sliding is stopped, and no further sliding is possible unless a large force is applied.

A projection 18 provided on a front portion of the sliding body.
Is for connecting the blade body 6. Since the blade body 6 is connected to the slide body 7, it slides back and forth with the slide of the slide body 5.

In the cutter knife of the present invention, both stopper surfaces 11, 11 are in contact with the lock portion 12 in a normal state as shown in FIG. Therefore, even if the blade body 6 is pulled forward or pushed backward, the stopper surfaces 11, 1
1 is blocked by the lock portion 12 and the engagement portion 9 is
Since the blade body 6 cannot be immersed inside, the blade body 6 is securely locked without moving.

FIG. 4 shows a state in which the blade body 6 is slid forward. When the operating portion 8 is slid forward, the lock portions 12, 12 also move forward. When the operating portion 8 is further pushed forward by applying force, the lock portion 12 at the front moves forward while pushing and expanding the elastic portion 10 at the front, so that the lock portion 12 at the rear also moves forward and the stopper surface at the rear. The contact state with the contact 11 is released, and the locked state of this portion is released. As a result, the engaging portion 9 can be immersed in the sliding body 7, so that the engaging portion 9 can slide the blade body 6 forward while repeating intermittent immersion.

FIG. 5 shows a state in which the blade body 6 is slid rearward. When the operating portion 8 is slid rearward, the lock portions 12, 12 also move rearward. When the operating portion 8 is further pushed rearward by applying force, the locking portion 12 at the rear moves backward while pushing and expanding the elastic portion 10 at the rear, so that the locking portion 12 at the front also retreats and the front stopper surface also moves. The contact state with the contact 11 is released, and the locked state of this portion is released. As a result, the engaging portion 9 can be immersed in the sliding body 7, so that the engaging portion 9 can slide the blade body 6 backward while intermittently repeating the immersion.

In the embodiment of the present invention, as shown in the drawings, both ends of a lock portion 12 in contact with the stopper surfaces 11, 11 are bent at a boundary between the stopper surfaces 11, 11 and the elastic portions 10, 10. Most of the lengths of the stopper surfaces 11, 11 are in contact with the lock portions 12, 12 so as to be located near 13, but both ends of the lock portion 12 are bent portions 1.
It does not completely reach 3, 13 and has a little play. Therefore, the operation unit 8 freely moves by the amount of the play, but in the movement range corresponding to the play, the stopper surface 11,
Since the contact between the lock 11 and the lock portions 12 is not released and the locked state is not released, there is no inconvenience in using the cutter knife.

[0020]

[Effect of the Invention A present invention the above-described configuration, b
The both ends of the locking part 12 are stopper surfaces 11, 11 and an elastic part.
It is located near the bends 13, 13 at the boundary with 10, 10.
By setting the length of the lock portion 12 as shown in FIG.
8 can move freely, and the stopper
Most of the length of the surfaces 11, 11 is in contact with the lock portion 12.
You. Therefore, the operation unit 8 can be moved freely, albeit slightly.
The stopper surfaces 11, 1
1 and the lock portions 12 and 12 do not come off from each other,
No inconvenience when using a cutter knife because it is not released
No confusion occurs.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a sliding body.

FIG. 2 is a perspective view of the present invention.

FIG. 3 is a front view showing a state where a blade body is locked.

FIG. 4 is a front view of a state where the blade body is slid forward;

FIG. 5 is a front view of a state in which the blade body is slid backward.

[Description of Signs] 1 sliding groove 2 uneven portion 3 holder 4 leaf spring 5 sliding body 6 blade body 7 sliding body 8 operating section 9 engaging section 10 elastic section 11 stopper surface 12 lock section 13 bending section 14 cavity section 15 Flange 16 groove 17 Open port 18 Projection

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Figure 3

[Correction method] Change

[Correction contents]

FIG. 3

[Procedure amendment 3]

[Document name to be amended] Drawing

[Correction target item name] Fig. 4

[Correction method] Change

[Correction contents]

FIG. 4

[Procedure amendment 4]

[Document name to be amended] Drawing

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

FIG. 5

Claims (1)

[Claims] 1. A holder (3) provided with a sliding groove (1) in a longitudinal direction and having a large number of concave and convex portions (2) continuous on an inner edge of the sliding groove (1); (5) A sliding body (5) that is moved and fixed by engaging and disengaging a leaf spring (4) slidably and internally provided in the unevenness (2) portion.
And a blade body (6) fitted into the sliding groove (1), connected to the sliding body (5), and moved and fixed together with the sliding body (5).
The sliding body (5) comprises a sliding body (7) connected to the blade (6), a leaf spring (4) provided inside the sliding body (7), and a sliding body (7). ) Is mounted on the upper surface of the sliding body (7) and slidably mounted in the longitudinal direction with respect to the sliding body (7), and the blade body (6) is operated without operating the operating section (8). ) Is a leaf spring (4) provided inside the sliding body (7) so that the blade body (6) slides together with the sliding body (5) in the direction in which the operating portion (8) is slid. The central portion is curved in an arc shape to form an engaging portion (9), and the engaging portion (9) protrudes from the side surface of the sliding body (7) and engages with the uneven portion (2) of the sliding groove. The leaf spring (4) spreads in an octagonal shape in the sliding body (7) to form elastic portions (10, 10), and the elastic portions (10, 10) and the engaging portions (9) are connected to each other. The length of the sliding body at the border of Two stopper surfaces (11, 11) extending in the direction are formed, and extend from the back surface of the operating portion (8) into the octagonal leaf spring (4) to form the two stopper surfaces (11, 11). The operating portion (8) is provided with a lock portion (12) which is in contact with the lock portion (12). ), The blade (6) moves together with the slide body (5) by moving the blade body (6) independently of the slide body (5) for positioning the operation unit (8) at the neutral position in the sliding range. No means is provided, and both ends of the lock portion (12) in contact with the stopper surface (11, 11) are bent at the boundary between the stopper surface (11, 11) and the elastic portion (10, 10). , 13) so that the stopper faces (11, 1) Knife - cutter majority of the length of) is equal to or in contact locking portion (12, 12)