JPH033509B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to scissors that prevent the scissors from being opened inadvertently when not in use.

(Prior Art) As shown in FIG. 6, scissors 74 have been proposed which are comprised of scissor pieces 72 and 73 each having an operation hole 71 projecting laterally from the base end thereof.

(Problem to be solved by the invention) However, in this scissors, both scissor pieces 72, 73
Since the opening and closing of the scissors depends on the frictional resistance of the pivots and blades of the scissors 72 and 73, there have been cases where the scissors 1 and 2 open inadvertently, creating a dangerous situation.

Structure of the invention (means for solving the problem) Therefore, in this invention, a pair of scissors pieces 1 and 2
In the scissors whose middle parts are superimposed on each other and rotatably supported, a circumferential recess 3 is formed in the shape of a groove on the circumferential surface which becomes the outer circumferential surface of the scissors with both scissor pieces 1 and 2 overlapped. A belt-shaped locking member 16 shorter than the outer periphery of one of the scissors pieces 1 was slidably fitted into the circumferential recess 3.

(Function) When the locking member 16 is slid only on the circumferential surface of either one of the scissors pieces 1, 2, the scissors pieces 1, 2
can be opened and closed. On the other hand, when the lock member 16 is slid across both the scissors pieces 1 and 2, the lock member 16 prevents opening and closing of the scissors pieces 1 and 2.
2 cannot be opened and remains closed.

(Example) An example embodying the present invention will be described below.

In FIG. 1, reference numerals 1 and 2 denote an upper scissor piece formed into a rod shape with a semicircular cross section, and a lower scissor piece that pairs with the upper scissor piece, which are stacked one on top of the other. It is formed into a cylindrical shape.
The tip and base ends of both scissors pieces 1 and 2 are each rounded and formed into a hemispherical shape.
Reference numerals 1a and 2a designate blade members as blades, and both scissor pieces 1 and 2 are fixed to the inner surface of the distal end side so that they can slide into contact with each other and cut a material such as paper.

S is an operation hole transparently provided in the base end of the upper scissors piece 1 in a rectangular shape, and a similar operation hole S is also provided transparently in the base end of the lower scissors piece 2, and both operation holes The two scissor pieces 1 and 2 are superposed one on top of the other so that they overlap vertically and match. Reference numeral 3 denotes a circumferential recess formed in a circumferential manner at the center in the longitudinal direction of the cylindrical outer periphery formed by the two scissors pieces 1 and 2 superimposed on each other as shown in FIG. Both sides of the circumferential recess 3 have a tapered shape that widens toward the bottom to prevent a lock member 16, which will be described later, from falling off. 7, as shown in FIG.
The upper part 7a is formed into a conical shape with an enlarged diameter. 8 is the circumferential recess 3
A third engagement groove 9 is recessed in the longitudinal direction of the upper scissor piece 1 at the upper end, and reference numeral 9 is a first engagement groove recessed in the longitudinal direction of the lower left side of the upper scissor piece 1; 11 is a second engagement groove recessed longitudinally in the lower right side of the upper scissor piece 1, and 11 is a fourth engagement groove recessed in the longitudinal direction in the lower right side of the lower scissor piece 2. It's a groove.

12 is a screw whose upper half is loosely inserted into the shaft hole 7, and the lower part of this screw 12 is inserted into the lower scissor piece 2.
It is fixed to the lower scissors piece 2 by being screwed onto the lower scissors piece 2. And the screw 12 has its head 12
By locking the upper part 7a of the shaft hole 7 with the lower surface of a, the upper scissors piece 1 is rotatably supported relative to the lower scissors piece 2.

14 is a circular magnet provided on the inner surface of the scissors piece 1 on the proximal side of the operation hole S, and 15 is the operation hole S of the scissors piece 2 as well.
An edge-shaped magnet provided on the inner surface closer to the proximal end,
Both scissors pieces 1 and 2 overlap each other by overlapping vertically and adsorbing each other.
is designed to prevent it from opening accidentally when not in use. Note that the magnets 14 and 15 may be replaced by engaging recesses and protrusions (not shown), respectively, so that they engage with and disengage from each other.

Reference numeral 16 denotes an elastic locking member having a semicircular arc shape in cross section. Both sides of the locking member 16 are attached to the circumferential recess 3 so as to be slidable. Further, a cylindrical engagement portion 17a is provided at the left end of the lock member 16.
Similarly, an engaging portion 17b is provided at the right end.

As shown in FIG. 4 or FIG. It is possible to engage and disengage from four engagement grooves 11 at the same time.

Next, the operation of the scissors of this embodiment formed as described above will be explained.

When the lock member 16 is moved in the direction of the arrow P shown in FIG.
b disengages from the third engagement groove 8 and fourth engagement groove 11, and as shown in FIG. (unlocked state). In this state, the locking member 16 is located only above the scissors piece 1, so the scissors pieces 1 and 2 can rotate relative to each other about the screw 12 as shown in FIG.

Therefore, by opening the base end side against the attraction force of the magnets 14 and 15 and rotating the scissors pieces 1 and 2 relative to each other in the operation hole S, the scissors can cut paper etc. with the blade members 1a and 2a. .

Next, when the scissors are not in use, both scissor pieces 1 and 2 are overlapped with each other as shown in FIG.
A third engagement groove 8 is formed in the upper scissor piece 1 by rotating the lock member 16 as shown by the arrow Q in FIG. and the fourth engagement groove 11 formed in the lower scissor piece 2.
shall be involved in each case.

In this state, the upper scissor piece 1 and the lower scissor piece 2
Since the scissors pieces 1 and 2 are vertically clamped from the sides by the lock member 16, rotation of the scissors pieces 1 and 2 is prevented. Therefore, the scissors can be stored and organized without the scissors pieces 1 and 2 inadvertently rotating relative to each other. Particularly in this embodiment, both the upper and lower scissors pieces 1 and 2 are formed into a bar shape with a semicircular cross section, and the operation hole S is formed in the upper and lower scissors pieces 1 and 2.
Because it is transparent without protruding from the base end of the
It can be stored compactly and is convenient to carry.

Effects of the Invention As detailed above, the present invention provides scissors in which the intermediate portions of a pair of scissors pieces 1 and 2 are overlapped with each other and rotatably supported. A groove-shaped circumferential recess 3 is formed on the circumferential surface that becomes the outer circumferential surface of the scissors, and a belt-shaped locking member 16 shorter than the outer circumference of one of the scissors pieces 1 is slidably fitted into this circumferential recess 3. By fitting the scissors together, it is possible to prevent the scissors from opening accidentally, and the scissors can be used safely.

[Brief explanation of the drawing]

1 to 5 show an embodiment embodying the present invention, FIG. 1 is a perspective view showing a state in which both scissor pieces overlap, and FIG. 2 is a circumferential view with the locking member omitted. 3 is a perspective view showing the state of use; FIG. 4 is a sectional view showing the state in the unlocked state; FIG. 5 is a sectional view showing the state in the locked state; FIG. 6 is a plan view showing conventional scissors. 1... Upper scissor piece, 2... Lower scissor piece, 3... Circumferential recess, 8... Upper engagement groove, 9... Left engagement groove, 10
...Right side engagement groove, 11...Lower side engagement groove, 16...
Locking parts.

Claims (1)

[Claims] 1. In a pair of scissors in which intermediate portions of a pair of scissors 1 and 2 are overlapped and rotatably supported, the outer peripheral surface of the scissors is A groove-shaped circumferential recess 3 is formed on the circumferential surface of the scissors, and a belt-shaped lock member 16 shorter than the outer circumference of one of the scissors pieces 1 is slidably fitted into the circumferential recess 3. scissors. 2. The scissors according to claim 1, characterized in that the circumferential recess 3 is provided at a portion where both the scissor pieces 1 and 2 are pivotally supported. 3 Engaging portions 17 are provided at both ends of the locking member 16.
a, 17b, and in the circumferential recess 3, one of the scissors pieces 1 engages with the engaging portions 17a, 17b of the locking member 16, respectively, so that the locking member 16 can be held in the unlocked position. First and second engagement grooves 9 and 10 are provided, and in the circumferential recess 3, an intermediate position between the first and second engagement grooves 9 and 10 in one scissors piece 1 and the other scissors piece 2 are provided. is characterized in that third and fourth engagement grooves 8 and 11 are provided with which the engagement portions 17a and 17b of the lock member 16 are respectively engaged to hold the lock member 16 in the locked position. Scissors according to claim 1. 4. A patent characterized in that one scissors piece 1 and the other scissors piece 2 paired with this one scissors piece 1 are each formed into a bar shape with a semicircular cross section, and are stacked on top of each other to form a columnar shape. Scissors according to claim 1.