JPS603786Y2 - cutting tools - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cutting tool, and in particular, the cutting blade can be inserted into a cover case while being closed, and the blade can be freely slid to an opening/closing operation lever pivotally connected to the case. In a configuration in which the blade is engaged with the lever and used for opening and closing, the blade is fixedly locked from retracting during opening and closing,
It has been devised so that it can always cut the target object safely, reliably, and stably.

Hereinafter, the specific structure of the present invention will be explained based on the illustrated embodiment. In FIGS. 1 to 9 in which this invention is applied to scissors, 1 is a cover case that also serves as a grip and can be held with one hand, and is preferably made of metal. is made from synthetic resin and may be colored.

This case 1 is assembled from two halves into a substantially folded state, and the cutting blade described later and its opening/closing operation lever can both be received and stored in the hollow interior. There is.

In other words, 2 is the case body which is one of the two halves, 3 is the other lid body, and both are connected by a plurality of identical screws 4.
It is removably assembled and integrated.

Each of the screws 4 is screwed into a cylindrical portion that projects horizontally inward from the case body 2 and the lid 3, respectively.
In this case, the two shaft cylinder parts into which the pair of upper and lower screws 4 located at the front of the case 1 itself are to be received are also used as the pivot shaft 5 of the operating lever, which will be described later.

Therefore, even if the screw 4 is removed, the lever does not fall off the pivot 5 immediately, and therefore assembly and disassembly operations can be performed easily.

Reference numeral 6 denotes a slide guide groove formed on the inner surface of the side wall of the case body 2, and extends in a long and narrow direction in the longitudinal direction on the longitudinal center line of the case 1 itself.

Reference numeral 7 denotes a slide guide elongated hole opened through the side wall of the lid body 3, which also extends in the front-rear direction, and correctly faces and parallel to the guide groove 6.

It goes without saying that the opening lengths of the guide groove 6 and the guide elongated hole 7 are sufficient to allow the blade described later to be inserted into the case 1. It does not necessarily have to be in the form of a concave groove as long as it functions as a guide rail.

The case 1 itself, which is formed by assembling the case body 2 and the lid 3, has a lever inlet/outlet 8 in both upper and lower walls, and a blade inlet/outlet 9 in the front wall.

In the figure, the case 1 itself is formed by a case body 2 and a lid 3 that are divided into equal parts, and for convenience of explaining the distinction, one is called the case body 2 and the other is called the lid 3. For example, one of the A similar case 1 may be completed by making one into a deep box shape and the other into a simple flat plate shape.

Alternatively, both may be left-right symmetrical and have exactly the same shape, and the guide groove 6 may be opened in a penetrating state in exactly the same manner as the guide elongated hole 7.

In any case, the blade body and its operating lever described below are case 1.
The case body 2 and the lid body 3 are sandwiched from both sides, so there is no risk of them falling off.

Reference numeral 10 designates a pair of opening/closing operation levers made of metal or preferably synthetic resin, each of which is rotatably inserted into the pivot shaft 5 of the case 1 at its front end.

However, the shaft 5 made of the shaft cylinder part of the case 1 is
For example, the front end of the lever 10 is formed into an arcuate surface L1, and by constantly contacting this with the arcuate inner surface formed corresponding to the front wall of the case 1, the lever 10 can be pivotally supported so that it can be rotated toward the case 1. You can also keep it.

The pair of levers 10 have the same U-shaped cross section, and are assembled to the case 1 so as to face each other upside down.

Therefore, the open portion of the U-shaped cross section is oriented downward in one lever 10 and upward in the other lever 10.

Reference numeral 11 denotes an elongated blade receiving hole that is opened through one side wall portion of the lever 10 having a U-shaped cross section, and extends in the longitudinal direction of the lever 10 itself.

The rear end of the blade is engaged with this in a detachable and slidable manner.

Reference numeral 12 denotes a single step stopper portion formed at the front end of the elongated hole 11, forming a boundary with the drop-in hole 13 formed by enlarging the elongated hole 11.

Reference numeral 14 denotes a metal cutting blade body, which cuts the object with a sharp cutting edge machined approximately in the front half thereof.

Reference numeral 15 denotes a pivot for assembling the pair of blade bodies 14 to the case 1, which passes through a midway portion where the X-shape intersects, and around which the blade body 14 rotates.

Further, reference numeral 16 denotes a retaining arm that is continuously bent in an L-shape at the rear end of the blade 14, and the above-mentioned receiver of the lever 10 is slidably inserted into the elongated hole 11 and engaged.

Reference numeral 17 denotes a helical spring that biases the double-blade body 14 to expand at all times, and is wound around the assembly pivot 15 of the blade body 14, and its separated ends are provided midway at the rear of the double-blade body 14. The notches 18 are individually engaged with each other.

Therefore, this elastic force is also directly borne by the lever 10, and while the engagement arm 16 of the blade body 14 is constantly being dropped into the drop-in hole 13 of the lever 10, the step part 1
2, it is subjected to a pressing force in the direction of being fixed and locked so that it cannot slide rearward.

Even though the blade body 14 and its opening/closing operation lever 10 are separate objects in advance, they are operatively connected to each other due to this configuration.

The pivot shaft 15 of the blade body 14 traverses the inside of the case 1 as a screw fastening body consisting of a square-headed bolt 19 and a cap knight 20 screwed thereto.

In that case, the square head of the bolt 19 is slidably engaged with the guide groove 6 of the case body 2, and the resin knob head of the cap night 20 is slidably engaged with the guide slot 7 of the lid body 3. By being led out, it can be slid from the outside in the front and back direction with a fingertip or the like, or it can be turned around the bolt 19.

In other words, the pivot 15 is aligned along the guide elongated hole 7 of the case 1,
By sliding the blade body 14 forward and backward from the outside, the stored state in which the blade body 14 is buried in the case 1 and the usage state in which it extends out are mutually changed. connects the opening/closing operation lever 10.

Based on the above configuration, the opening and closing action of the scissors will be explained. In the state of use, as is clear from FIGS. 1 to 4, the blade body 14
and its operating lever 10 are both kept in an open state in which they extend out from the case 1 under the pressure of a spring 17,
Therefore, operate the lever 10 with the fingertips of the hand holding the case 1 to open and close the blade 14 protruding forward.
Able to cut objects.

In this case, since the engagement arm 16' of the blade body 14 is engaged in the drop-in hole 13 of the lever 10 under the expansion pressure of the spring 17, the reaction force at the time of cutting is applied. The receiver abuts against the one-stage stopper portion 12 of the elongated insertion hole 11 and never moves backward, so that the object can be cut correctly and reliably.

When carrying, storing, etc., the lever 10 is changed from the state shown in Fig. 2 to the state shown in Fig. 6.
With the fingertips of the squeezed hand, slide the axis 1°5 of the blade body 14 backward along the guide elongated hole 7 of the case 1.

At that time, the engagement arm 16 of the blade body 14 is transferred from the drop-in hole 13 of the lever 10 to the elongated hole 11 into which the receiver is inserted.

Then, the blade body 14 will slide recessed into the case 1 in the closed state while the blade body holder is engaged with the elongated hole 11, and will eventually be completely housed.

Since the lever 10 is always engaged with the blade 14, the retracted state of the lever 10 with respect to the case 1 is also fixedly locked.

It goes without saying that when changing from the unused state shown in FIGS. 6 to 9 to the used state shown in FIGS. 1 to 5, it is sufficient to slide the pivot 15 of the blade 14 forward.

As described above, the present invention can be used as scissors or other cutting tools, including a pair of blades 14 assembled in an X-shape by a rotation axis 15, and the blades 14 are constantly pressed and biased in the direction of expansion. In order to do this, a spring 17 wound around the pivot shaft 15 and a pair of operating levers 10 for opening and closing the blade body, which are pivotally attached to the cover case 1 which receives the blade body 14 in the closed state, can be opened and closed. The locking arm 16 formed on the blade body 14 is connected to the lever 1
The blade receiver opened along the longitudinal direction of 0 is slidably engaged with the elongated hole 11, and the engagement arm 16 is removably engaged with a stopper step 12 provided at the end of the elongated hole 11. Since the blade 14 is fixed and locked during opening and closing, the blade 14 can be inserted into the cover case 1 and carried around in a safe storage state, but it cannot be opened or closed. In use, the object can be reliably and stably cut by the blade 14 by the light opening/closing operation of the lever 10, regardless of the type or size of the object. It can be said that it is a very convenient idea.

[Brief explanation of drawings]

The figures show the present invention applied to scissors. Figure 1 is a side view of the scissors in use, Figure 2 is a side view of the scissors with the lid open, and Figure 3 is a side view of the invention when the lid is opened. Side view of lid state, 4th
The figures are an enlarged cross-sectional view taken along the line A-A in Fig. 1, Fig. 5 is a side view with the operation lever closed, Fig. 6 is a side view with the lid open with the cutting blade stored, and Fig. 7 The figure is the front view of Figure 6,
8 is an enlarged sectional view taken along the line B--B in FIG. 6, and FIG. 9 is a sectional view taken along the line CC in FIG. 7. 1...Cover case, 5, 15...Pivot, 10...Operation lever 11...Elongated hole for inserting the blade holder, 12...・Stopper first stage part, 1
4...Blade body, 16...Engagement arm, 1
7... Spring.

Claims (1)

[Scope of Claim for Utility Model Registration] ■ A pair of blades 14 assembled in the middle of the X-shaped intersection so that they can be opened and closed by a pivot shaft 15, and both blades 14 are always pressed in the direction of expansion. In order to strengthen
A helical spring 17 is wound around the pivot shaft 15, and a pair of operating levers 10 for opening and closing the blades are rotatably attached to the cover case 1 which receives the double blades 14 in the closed state in a buried manner. The two levers 10 are U-shaped in cross section facing each other, and the blade receivers extending in the longitudinal direction on one side wall are inserted into slots 11, respectively, and the blade 14 is inserted from the rear end of the blade 14. Engagement arms 1 with cross-sections facing each other
6 are bent and raised, and the retaining arm 16 is engaged from inside the lever 10 with the long hole 11 in which the blade receiver is inserted, so that it can slide along the long hole 11, and the engagement arm A stopper single-stage part 12 that fixes and locks the blade 14 during opening and closing by releasably locking the blade 16 and the blade holder are formed at the end of the insertion slot 11, respectively. and cutting tools. 2. When each operating lever 10 for opening and closing the blade is rotatably attached to the cover case 1, the cover case 1 is removably assembled and integrated with a plurality of screws 4, and the screws 4 are inserted into the cover case 1. Practical use characterized in that the front end of the lever 10 is pivotally connected to the cover case 1 so that the shaft cylinder part integrally protrudes from the cover case 1 to accommodate the operation lever 10 and functions as the rotation axis 5 of the operating lever 10. Claims for patent registration: Cutting tool as described in item 1.