JPH0513361U - scissors - Google Patents

Abstract

(57) [Summary] [Purpose] When cutting hair, make it possible for hair to be cut smoothly without the hair caught between the blades of both blades escaping to the cutting edge side. [Structure] A first support shaft portion for rotatably inserting and supporting a first blade body 1 on a pivot shaft 3 on which a pair of first and second blade bodies 1, 2 are pivotally mounted. 32 and a second support shaft portion 33 that inserts and supports the second blade body 2, and the second support shaft portion 3 is provided.
3 is eccentric in the radial direction with respect to the rotation center of the first support shaft portion 32 with respect to the first blade body 1, and the second blade body 2 is rotated together with the pivot shaft 3 to form a first blade. The body 1 can be moved relative to the second blade body 2 by an amount of eccentricity of the second support shaft portion 33 with respect to the first support shaft portion 32.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mainly relates to scissors used for cutting hair.

[0002]

[Prior Art]

 Generally, this type of scissors has a pair of blades provided with an insertion hole at the pivotal attachment portion, a bolt is inserted through the insertion hole, and a nut is screwed to the insertion end portion through a washer. ing.

[0003]

[Problems to be solved by the device]

 By the way, in the scissors described above, since the hair is pinched by the blade portions of the double-edged bodies by the oscillation of the double-edged bodies around the bolt, the hair is cut in a so-called push-cut state. Since the hair to be cut off easily escapes toward the cutting edge, it is not possible to cut the hair smoothly, and the cut hair is scattered.

The present invention was developed in view of the above circumstances, and an object of the present invention is to prevent the hair caught between the blades of both blades from escaping to the cutting edge side when cutting the hair. It is to provide scissors that can be cut smoothly and sharply.

[0005]

[Means for Solving the Problems]

 In the present invention, however, a pair of first and second blade bodies 1 and 2 provided with the blade portions 11 and 21 on one end side in the length direction and the finger hook portions 12 and 22 on the other end side, respectively, and the pivot shaft 3 In the scissors pivotally attached via the first supporting shaft portion 32 for rotatably inserting the first blade body 1 and the second supporting shaft portion 33 for inserting and supporting the second blade body 2 on the pivot shaft 3. Is provided to make the second support shaft portion 33 eccentric in the radial direction from the rotation center of the first support shaft portion 32 with respect to the first blade body 1, and to allow the second blade body 2 to pivot. It is characterized in that it is designed to co-rotate with.

Between the shaft end of the pivot shaft 3 and either one of the first and second blades facing the shaft end, both blades of the first and second blades 1 and 2 are provided. You may interpose the spring member 5 which presses the parts 11 and 21 toward each other.

Further, the spring member 5 is formed of a leaf spring, and the spring member 5 is interposed between the shaft end portion of the pivot shaft 3 and the second blade body 2, and the spring member 5 is formed. In addition, a locking portion 52 that locks the second blade body 2 in a non-rotatable manner and an insertion hole 51 that inserts the second support shaft portion 33 in a non-rotatable manner may be provided.

[0008]

[Action]

 According to the present invention, the second support shaft portion 32 revolves with respect to the axis of the first supporting shaft portion 31 as the two blade bodies swing, and the first blade body 1 and the second blade body 2 moves relative to the first supporting shaft portion 32 by the amount of eccentricity of the second supporting shaft portion 33, so that when the hair is cut by the both blade portions 11 and 21, so-called pull-cutting is performed.

According to the present invention, the first and second blades are provided between the shaft end of the pivot shaft 3 and one of the first and second blades facing the shaft end. By interposing the spring member 5 that presses the both blade portions 11 and 21 of the bodies 1 and 2 in a direction in which they approach each other, hair is sandwiched between the inner surfaces of the both blade portions 11 and 21 that face each other. There is no fear of this, and hair can be cut more smoothly.

According to the present invention, in order to rotate the second blade body 2 together with the pivot shaft 3, the spring member 5 is formed of a leaf spring, and the spring member 5 is An engaging portion 52 which is interposed between the shaft end of the pivot shaft 3 and the second blade body 2 and is engaged with the spring member 5 so as to be non-rotatably attached to the second blade body 2; By providing the insertion hole 51 through which the second support shaft portion 33 is non-rotatably inserted, the play of the second blade body 2 with respect to the pivot shaft 3 can be easily eliminated.

[0011]

In the drawings, reference numeral 1 denotes a first blade body that serves as a moving blade, and 2 denotes a second blade body that serves as a stationary blade. 21 and the finger hooks 12 and 22 on the other end side, respectively, and an intermediate portion in the lengthwise direction of these blades 1 and 2 is formed as a pivotal attachment portion of both blades 1 and 2, Circular through holes 13 and 23 are formed in the portion.

Reference numeral 3 denotes a pivot shaft for pivotally attaching the two blade bodies 1 and 2, and the pivot shaft 3 has a head 31 having a diameter larger than that of the through holes 13 and 23, and the first blade body. The first supporting shaft portion 32 which is inserted into the first through hole 13 to rotatably support the first blade body, and the through hole 23 of the second blade body 2 which supports the second blade body 2. The second support shaft portion 33 and the second support shaft portion 33 are eccentric to the second support shaft portion 33 in the radial direction from the center of rotation of the first support shaft portion 32 with respect to the first blade body 1, for example, by 1.3 mm. In the embodiment shown in the drawings, the screw 34 is provided around the outer circumference of the second support shaft portion 33, and the nut 4 is screwed onto the free end portion of the second support shaft portion 33. In addition to this, the outer peripheral surface of the second support shaft portion 33 is chamfered 35 to make the cross-sectional shape of the second support shaft portion 33 oval.

Reference numeral 5 is a spring member composed of a leaf spring interposed between the nut 4 screwed to the free end portion of the second support shaft portion 33 and the second blade body 2. In the embodiment shown in FIG. 4, the spring member 5 has an insertion hole 51 having an oval cross section for non-rotatably inserting the second support shaft portion 33, and a locking hole formed on the outer surface of the second blade body 2. And a locking portion 52 which is fitted to the second blade body 24 to disable relative rotation of the second blade body 2 with respect to the spring member 5.

As shown in FIG. 2, the scissors having the above-described structure insert the pivotal support shaft 3 into the through holes 13 and 23 of the first and second blade bodies 1 and 2 to provide the first support. The first blade 1 is supported on the shaft portion 32 and the second blade body 2 is supported on the second support shaft portion 33, and the spring member 5 is attached to the insertion end portion of the second support shaft portion 33. The nut 4 is screwed into the free end portion of the second support shaft portion 33 after being inserted through the insertion hole 51, and accordingly, by the spring reaction force of the spring member 5, While the inner side surfaces of the first and second blade bodies 1 and 2 opposite to each other of the blade portions 11 and 21 are constantly in contact with each other, the second blade body 2 is connected to the pivot shaft 3 through the spring member 5. The first blade 1 can rotate and can rotate relative to the pivot shaft 3.

When cutting hair with the scissors having the above construction, the blade portion 11 of the first blade body 1 is used as the blade portion 21 of the second blade body 2 with the pivot shaft 3 as a fulcrum. From the opened state, the blade portion 11 of the first blade body 1 is swung to the position where the blade portion 11 of the first blade body 1 overlaps the blade portion 21 of the second blade body 2 with the pivot shaft 3 as a fulcrum.

By the way, in the conventional scissors in which the double-edged body is freely swingable via a normal bolt, the double-edged body is simply swung with the bolt as a fulcrum as shown by a two-dot chain line L1 in FIG. However, in the first embodiment, the second support shaft portion 33 supporting the second blade body 2 supports the first blade body 1 in a freely rotatable manner. Since the shaft portion 32 is eccentric in the radial direction with respect to the center of rotation with respect to the first blade body 1, and the second blade body 2 rotates with the pivot shaft 3, the second support shaft portion 32 moves forward. Note that the first blade 1 and the second blade 2 are revolved around the axis of the first supporting shaft portion 31 and, as a result, the first blade body 1 and the second blade body 2 of the second supporting shaft portion 33 are revolved as indicated by the one-dot chain line L2 in FIG. The relative movement with respect to the first support shaft portion 32 is caused by the amount of eccentricity.・ When the hair is cut by 21, so-called pulling is performed, and the hair sandwiched between the two blades 11 and 21 does not escape to the cutting edge side, but is cut smoothly and sharply, causing split ends. Less, and less scattering of cut hair.

Further, in the above-described embodiments, since the inner surfaces of the first and second blade bodies 1 and 2 facing each other of the blade portions 11 and 21 are in contact with each other via the spring member 5, There is no possibility that the blades will be sandwiched between the inner surfaces of the blade portions 11 and 21 that face each other.

Further, in the above embodiment, the outer peripheral surface of the second support shaft portion 33 is chamfered 35 to make the cross-sectional shape of the second support shaft portion 33 oval, while the spring member 5 is a plate. An oval-shaped insertion hole 51 formed of a band, into which the second support shaft portion 33 can be fitted, and a locking portion 52 that locks the second blade body 2 in a non-rotatable manner. Since the second blade body 2 and the second support shaft portion 33 are rotated together by providing and, the backlash of the second blade body 2 with respect to the pivot shaft 3 is reduced. You can do it.

That is, as the structure in which the second blade body 2 is rotated together with the second support shaft portion 33, for example, a part of the second support shaft portion 33 is rectangular and This can be achieved by making the through hole 23 formed in the second blade body 2 into a rectangular shape into which the rectangular portion of the second support shaft portion 33 can be fitted, but the second blade body 2 is normally quenched. Therefore, since the through hole 23 formed in the second blade body 2 shrinks as the blade body 2 is quenched, it is difficult to control the inner diameter of the through hole 23. When the second blade body 2 is non-rotatably inserted into the second support shaft portion 33 via the above, the second blade body 2 is apt to rattle with respect to the second support shaft portion 33. is there.

However, in the spring member 5 formed of a leaf spring as in the above-described embodiment, it is not necessary to perform quenching as in the blade body 2, and thus the spring member 5 formed as described above is formed. The inner diameter of the insertion hole 51 can be controlled easily and accurately, and therefore, the play of the second blade 2 with respect to the pivot shaft 3 can be easily eliminated.

[0021]

[Effect of the device]

 As described above, according to the present invention, the first support shaft portion 32 and the second support shaft portion 32 that rotatably insert the first blade body 1 through the pivot shaft 3 that pivotally mounts the pair of first and second blade bodies 1 and 2 are provided. A second support shaft portion 33 that inserts and supports the blade body 2 is provided, and the second support shaft portion 33 is eccentric in a radial direction with respect to a rotation center of the first support shaft portion 32 with respect to the first blade body 1. At the same time, the second blade body 2 and the pivot shaft 3 are rotated together, so that the second support shaft portion 32 causes the shaft of the first support shaft portion 31 to move as the blade bodies swing. Since the first blade body 1 and the second blade body 2 revolve with respect to the core and relatively move by the amount of eccentricity of the second support shaft portion 33 with respect to the first support shaft portion 32, the both blade portions. When the hair is cut by 11 ・ 21, so-called pull-cutting is performed, so that the hair sandwiched by both blades 11 ・ 21 escapes to the cutting edge side. Without such, smooth yet been cut sharply, to the generation of split hair is reduced, yet it's also reduced scattering of cut hair.

According to the present invention, the first and second blades are provided between the shaft end of the pivot shaft 3 and one of the first and second blade bodies facing the shaft end. By interposing the spring member 5 that presses the both blade portions 11 and 21 of the bodies 1 and 2 in a direction in which they approach each other, hair is sandwiched between the inner surfaces of the both blade portions 11 and 21 that face each other. There is no fear of this, and hair can be cut more smoothly.

Further, according to the present invention, in order to rotate the second blade body 2 together with the pivot shaft 3, the spring member 5 is formed of a leaf spring, and the spring member 5 is An engaging portion 52 which is interposed between the shaft end of the pivot shaft 3 and the second blade body 2 and is engaged with the spring member 5 so as to be non-rotatably attached to the second blade body 2; By providing the insertion hole 51 through which the second support shaft portion 33 is non-rotatably inserted, the play of the second blade body 2 with respect to the pivot shaft 3 can be easily eliminated.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of scissors according to the present invention.

FIG. 2 is an enlarged sectional view of the main part.

FIG. 3 is a side view of a pivot shaft.

FIG. 4 is a front view of a pivot shaft.

FIG. 5 is a side view illustrating the operation of the scissors according to the present invention.

[Explanation of symbols]

 1 1st blade 11 Blade part 12 Finger hook part 2 2nd blade 21 Blade part 22 Finger hook part 3 Pivot shaft 32 1st support shaft part 33 2nd support shaft part 5 Spring member 51 Insertion hole 52 Locking part

Claims (3)

[Scope of utility model registration request] 1. A pair of first and second blade bodies 1, 2 each having a blade portion 11, 21 on one end side in the length direction and a finger hook portion 12, 22 on the other end side, and a pivot shaft 3 In the scissors pivotally attached via the first supporting shaft portion 32 which rotatably inserts and supports the first blade body 1 and the second supporting body 2 which inserts and supports the second blade body 2 on the pivot shaft 3.
A support shaft portion 33 is provided, and the second support shaft portion 33 is eccentric in the radial direction with respect to the rotation center of the first support shaft portion 32 with respect to the first blade body 1, and the second blade body 2 is Scissors characterized in that they are designed to rotate together with the pivot shaft 3. 2. A double blade of the first and second blade bodies 1 and 2 between the shaft end portion of the pivot shaft 3 and one of the first and second blade bodies facing the shaft end portion. The scissors according to claim 1, wherein a spring member (5) for pressing the portions (11, 21) toward each other is interposed. 3. The spring member 5 is formed of a leaf spring, and the spring member 5 is interposed between a shaft end portion of the pivot shaft 3 and the second blade body 2. 5, a locking portion 52 that locks non-rotatably to the second blade body 2, and the second support shaft portion 3
3. The scissors according to claim 2, further comprising an insertion hole 51 through which the 3 is non-rotatably inserted.