JPH09164276A - Slider for cutter knife - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of parts and to prevent a slider from being decomposed carelessly by integrally providing a connection projection, forward inclined elastic piece, backward inclined elastic piece and stopper part at the main body of the slider and integrally providing a release projection and a stopper part at a slider knob. SOLUTION: A connection projection 4 to be connected to a blade body, a forward inclined elastic piece 5 for avoiding forward movement while being engaged with one of two separated engaging recessed parts of a holder, a forward inclined elastic piece 6 for avoiding backward movement while being engaged with another engaging recessed part, and a stopper part are integrally provided on the main body 2 of the slider. Then, the main body is inserted into the holder together with the blade body so as to be moved back and forth. A release projection 14 for releasing the engagement between the forward inclined elastic piece 5 of the slider main body 2 and the engaging recessed part of the holder through its forward movement and releasing the engagement between the backward inclined elastic piece 6 of the main body 2 of slider and the engaging recessed part of the holder through its backward movement and a stopper part 15 to be engaged with the stopper part of the slider main body 2 so as not to be separated therefrom are integrally provided at a slider knob 3, and this slider knob can be moved back and forth from/to the slider main body 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutter knife slider, and more particularly to an improvement of an auto-locking slider applied to a step slide type cutter knife.

[0002]

2. Description of the Related Art Conventionally, as a slider of a cutter knife of this type, for example, one described in Japanese Utility Model Publication No. 2-20991 is known. This is basically a slider body that has a connecting projection for connecting to the blade body and is fitted in the holder so as to be movable back and forth, and engages with one of the two retaining recesses that are separated from the holder. A forward tilting piece that prevents the slider body from moving forward with respect to the holder, and a backward tilting piece that engages with the other of the two retaining recesses that are spaced apart from the holder to prevent the slider body from moving backward relative to the holder. The elastic retaining body that is attached to the slider body is released, and the forward tilting piece of the elastic retaining body and the retaining recess of the holder are released from the forward movement, and the rearward inclination of the elastic retaining body is caused by the backward movement. Equipped with a release protrusion that releases the engagement between the bullet piece and the retaining recess of the holder, and a retaining portion that engages the forward tilting piece and the rearward tilting piece of the elastic locking body, and can move back and forth with respect to the slider body. And a slider knob.

[0003]

However, since such a device is composed of the slider body, the elastic retaining member, and the slider knob, the number of parts is still large.
Not only is the manufacturing cost high, but the assembly is troublesome. Also, because the retaining part provided on the slider knob is kept in the assembled state by engaging it with the elastic retaining body, it can easily be disassembled carelessly when shock is applied and the elastic retaining body is damaged. There was a fear of doing it. The present invention has been made in view of the above problems and was devised to solve this problem. The object of the present invention is to reduce the number of parts and prevent accidental disassembly. To provide.

[0004]

The slider of the cutter knife of the present invention basically engages with one of the two engaging recesses of the holder and the connecting projection for connecting with the blade body. The blade has a forward tilting piece that prevents forward movement, a rearward tilting piece that engages with the other of the two retaining recesses of the holder that are separated from each other to prevent backward movement, and a retaining portion that are integrally provided. The slider body is inserted into the holder so that it can move back and forth together with the body, and the forward tilting piece of the slider body and the locking recess of the holder are released by the forward movement, and the rear of the slider body is moved by the backward movement. A slider knob capable of moving back and forth with respect to the slider body, integrally provided with a release protrusion for releasing the engagement between the tilting piece and the retaining recess of the holder and a retaining portion which is permanently engaged with the retaining portion of the slider body. The characteristic is that it is composed of

Since the slider body integrally includes the connecting projection, the forward tilting bullet piece, the backward tilting bullet piece, and the retaining portion, and the slider knob integrally includes the releasing projection and the retaining portion,
The slider is composed of two parts, a slider body and a slider knob, and the number of parts is reduced.
Further, since the stopper portions provided on the slider body and the slider knob are engaged with each other in a non-separable manner, the assembled state is reliably maintained, and the forward tilted bullet piece and the backward tilted bullet piece are not damaged.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a disassembled state of the slider of the present invention. FIG. 2 is a rear view showing an assembled state.
FIG. 3 is an enlarged vertical side view of FIG. 2. FIG. 4 is a partially cutaway front view showing a state where the cutter knife is used. FIG. 5 is a view similar to FIG. 4 showing the forward drive operation state.

The slider 1 has a slider main body 2 and a slider knob 3 as its main components, and is applied to a cutter knife 50.

The cutter knife 50 includes a holder 60 and a blade body 7.
0 and slider 1 and the like. The holder 60 is
It has a substantially C-shaped cross section, and has an upper wall 61, a lower wall 62, and an upper surface wall 6.
3, a lower front wall 64, a back wall 65, and a large number of hook recesses 66 each having a substantially triangular shape formed below the upper front wall 63, and are made of synthetic resin. The blade body 70 is of a folding blade type having a substantially parallelogram shape, and has a connecting hole 71 formed on the rear side, a blade 72 formed on the lower edge, and folding lines formed at predetermined intervals (not shown). And) and is made from cutlery steel.

The slider body 2 engages with the connecting projection 4 for connecting with the blade body 70, and the forward tilting piece 5 that engages with one of the two retaining recesses 66 of the holder 60 which are separated from each other to prevent forward movement.
A rear tilting piece 6 that engages with the other of the two retaining recesses 66 of the holder 60 that are separated from each other to prevent rearward movement, and a retaining portion 7.
And a blade body 70, and the blade body 70 is fitted in the holder 60 so as to be movable back and forth. In this example, the substrate 8 having a substantially rectangular front shape and a frame formed in the first half of the substrate 8 are provided. Hole 9
A connecting protrusion 4 projecting from the front side of the substrate 8 and a raised section 1 projecting from the rear side of the substrate 8 and having a substantially U-shaped front.
0, the forward tilting piece 5 projecting obliquely forward and upward from the bottom wall thereof, and the forward tilting piece 5 projecting obliquely rearward and upward from the bottom wall of the raised portion 10 on the rear side thereof. Rear tilting piece 6 that forms a V shape with and
And the front and rear guide grooves 11 recessed on the front side of the raised portion 10.
A guide hole 12 formed in the upper part of the rear half of the substrate 8; a hole 13 formed in the substrate 8 in front of and behind the guide hole 12 and a rear tilt bullet piece 6; Board 8 near the top and bottom
And a concave retaining portion 7 formed on the back side of the, and is integrally made of synthetic resin.

The slider knob 3 releases the engagement between the forward tilting piece 5 of the slider body 2 and the locking recess 66 of the holder 60 by the forward movement, and also moves the backward tilting piece 6 and the holder of the slider body 2 by the backward movement. The slider body 2 is integrally provided with a release protrusion 14 for releasing the engagement of the retaining recess 66 with the retaining recess 66 and a retaining portion 15 which is inseparably engaged with the retaining portion 7 of the slider body 2.
In this example, the substrate 16 is substantially the same size as the latter half of the slider body 2 and has a front track circle shape, and the non-slip unevenness 17 formed on the front side thereof.
A plate-shaped release protrusion 14 is provided in the middle of the back side of the base plate 16 and is located between the free ends of the forward tilting piece 5 and the rearward tilting piece 6 and is loosely fitted into the guide hole 12 so as to be movable back and forth. A guide ridge 18 projecting below the base 16 of the base 16 and fitted in the guide groove 11 so as to be movable back and forth; a projecting edge 19 protruding above and below the back of the base 16; It is composed of a wedge-shaped retaining portion 15 provided on the back side of the projection 14 and irremovably engaged with the retaining portion 7, and is integrally made of synthetic resin. The neutral position and the forward-moving position and the backward-moving position sandwiching the neutral position. Each position can be taken.

Such a slider 1 is assembled as follows. After arranging the slider knob 3 on the front side of the slider body 2, when the stopper portion 15 of the slider knob 3 is applied to the front side of the guide hole 12 of the slider body 2 and the slider knob 3 is strongly pressed to the slider body 2 side, the hole 13 may exist. Together, the guide hole 12 expands and the retaining portion 15 becomes the guide hole 1.
It penetrates 2 and is irremovably engaged with the retaining portion 7. That is, they are hell-fitted or killed. Then, the rear side of the release projection 14 is loosely fitted in the guide hole 12 and the guide ridge 18 is loosely fitted in the guide groove 11, and the middle of the release projection 14 in the front-rear direction is the forward tilting piece 5 and the backward tilting bullet. Located between the free ends of the pieces 6, the slider knob 3 is assembled to the slider body 2 so as to be movable back and forth. In the assembled slider 1, the concave groove is formed above and below the raised portion 10 due to the substrate 8 of the slider body 2 and the substrate 16 of the slider knob 3. Thus, in the slider 1, after the connecting hole 71 of the blade 70 is fitted and connected to the connecting protrusion 4, the upper front wall 63 and the lower front wall 64 of the holder 60 are exposed in the upper and lower concave grooves. Therefore, it is inserted into the holder 60 so as to be movable back and forth.

Next, the operation will be described based on such a configuration. FIG. 4 shows a case where the slider 1 is stopped with respect to the holder 60 and is in an autolock state. At this time, the slider knob 3 is in the neutral position, and the free end portions of the forwardly tilted bullet piece 5 and the backwardly tilted bullet piece 6 each have two hooking recesses 66 of the plurality of hooking recesses 66 of the holder 60 that are separated from each other. Are engaged in. Then, the release projection 14 includes the forward tilting piece 5 and the backward tilting piece 6.
Positioned between the free ends of each by the elastic force,
The engagement with the engagement recess 66 is allowed. In this state, when the slider body 2 moves forward via the blade 70, the forwardly tilted bullet piece 5 and the latching recess 66 are engaged with each other.
The forward tilting piece 5 functions as a so-called supporting rod and is blocked. On the contrary, when the slider body 2 tries to move backward through the blade body 70, the rearwardly inclined bullet piece 6 and the latching concave portion 66 are engaged with each other, so that the backwardly inclined bullet piece 6 functions as a so-called thrust bar. This is blocked. Therefore, the blade 70 and the slider 1
Does not move in any of the front and rear directions even when an external force is applied, and is automatically locked with respect to the so-called holder 60.

When the slider 1 is moved forward with respect to the holder 60, a finger is put on the slider knob 3 in the neutral position to move it forward. Then, as shown in FIG. 5, the slider knob 3 is moved to the forward movement position, and the release projection 14 releases only the engagement between the forwardly tilted bullet piece 5 and the engagement recess 66 of the holder 60, and the same state is maintained. The slider body 2 and the slider knob 3 advance together, and the blade 70 also advances. At this time,
The backward tilting piece 6 repeatedly engages and disengages with the retaining recess 66 of the holder 60, and the slider 1 slides stepwise. When you release your finger from the slide knob 3, the slider 1 stops moving forward,
As shown in FIG. 4, the forward tilting piece 5 is attached to the retaining recess 6 of the holder 60.
6, the slider knob 3 returns to the neutral position via the release projection 14 due to the elasticity of the forward tilting piece 5.

When the slider 1 is moved backward with respect to the holder 60, a finger is put on the slider knob 3 in the neutral position to move it backward. Then, the slider knob 3 is moved to the rearward moving position, and the rearward projecting piece 6 and the holder 6 are moved by the release projection 14.
Only the engagement with the latching recess 66 of 0 is released, and the slider body 2 and the slider knob 4 move backward together with the same state maintained, and the blade 70 also moves backward. At this time, the forwardly inclined bullet piece 5 repeatedly engages and disengages with the retaining recess 66 of the holder 60, and the slider 1 slides stepwise.

The slider body 2 is integrally provided with a connecting projection 4, a forward tilting bullet piece 5, a rear tilting bullet piece 6 and a retaining portion 7, and the slider knob 3 has a releasing projection 14 and a retaining portion 15 integrally. Therefore, the slider 1 is composed of two parts, that is, the slider body 2 and the slider knob 3, and the number of parts is reduced. Further, since the retaining portions 7 and 15 provided on the slider body 2 and the slider knob 3 are irremovably engaged with each other, the assembled state is reliably maintained, and the forward tilting bullet piece 5 and the rearward tilting bullet piece 6 are secured. It will not be damaged.

The slider body 2 and slider knob 3 are
In the above example, it is made of synthetic resin, but not limited to this, it may be made of metal, for example. In the above example, the slider body 2 is
Although the forward tilting piece 5 is on the front side and the rear tilting piece is on the rear side, the present invention is not limited to this. For example, the front tilting piece 5 may be on the rear side and the rear tilting piece may be on the front side.

[0017]

As described above, according to the present invention, as described above,
The following excellent effects can be obtained. (1) The slider main body and the slider knob are formed, and in particular, the connecting projection, the forward tilting bullet piece, the rear tilting bullet piece, and the retaining portion are integrally formed on the slider body, and the releasing projection and the retaining portion are integrally formed on the slider knob. Since it is formed, the number of parts can be reduced. Therefore, the manufacturing cost can be reduced and the assembling can be facilitated. (2) Since the slider body and the slider knob are provided with retaining portions that engage with each other in a non-separable manner, the slider body and the slider knob will not be inadvertently disassembled even when a shock is applied, and the forward tilting piece and the rearward tilting bullet will be released. The piece will not be damaged.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a disassembled state of a slider of the present invention.

FIG. 2 is a rear view showing an assembled state.

FIG. 3 is an enlarged vertical side view of FIG.

FIG. 4 is a partially cutaway front view showing a state where the cutter knife is used.

FIG. 5 is a view similar to FIG. 4 showing a forward operation state.

[Explanation of symbols]

1 ... slider, 2 ... slider body, 3 ... slider knob,
4 ... Connection protrusion, 5 ... Front tilting piece, 6 ... Rear tilting piece, 7, 15
... retaining portion, 8, 16 ... substrate, 9 ... frame hole, 10 ... raised portion,
11 ... Guide groove, 12 ... Guide hole, 13 ... Hole, 14 ... Release protrusion, 17 ... Non-slip irregularity, 18 ... Guide ridge, 19 ... Projected edge,
50 ... Cutter knife, 60 ... Holder, 61 ... Upper wall, 62
... lower wall, 63 ... upper surface wall, 64 ... lower surface wall, 65 ... back wall, 66 ... locking recess, 70 ... blade, 71 ... connecting hole, 72
…blade.

Claims (1)

[Claims] 1. A connecting projection for connecting to a blade body, a forward tilting piece that engages with one of two retaining recesses of the holder that prevent forward movement, and two forwardly separating pieces of the holder that separate from each other. A rear tilting piece that engages with the other of the latching recesses to prevent backward movement,
The slider body that is integrally equipped with a stopper is inserted into the holder together with the blade so that it can move back and forth, and the forward tilting piece of the slider body and the engagement recess of the holder are released from the engagement due to the forward movement. In addition, a release projection for releasing the engagement between the rearwardly tilted piece of the slider body and the retaining recess of the holder due to the backward movement, and a retaining portion integrally engaged with the retaining portion of the slider body are integrally provided. A cutter knife slider comprising a slider knob that can move back and forth with respect to the slider body.