Scissors

Abstract

To provide scissors having a handle part for improving workability.SOLUTION: A handle portion 11a of a cutting blade 11 has a thumb ring 11aR for inserting the thumb, and the other cutting blade 12 has a finger ring 12aR for inserting the other fingers that face the thumb on the palm. A direction 11A for inserting the thumb into the thumb ring 11aR is formed so as to intersect three orthogonal axes including an axial direction of a support shaft 13 at an acute angle. As a result, the thumb insertion direction 11A can be set in a direction to close with respect to other fingers facing the thumb in the palm. In particular, in the cutting-off work in which the space between blade portions 11b, 12b is closed, force can be firmly transmitted to make the cutting-off easy, so that it is possible to provide the handle portions 11a, 12a which improve the workability.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to scissors used for cutting hair in hairdressing and beauty, as well as fabrics, paper, and the like.

Background Art

[0002] Conventionally, in hairdressing and beauty, scissors are widely used for cutting hair, and in other stationery, etc., for cutting fabrics, paper, and the like. Fig. 6 shows the state of the cutting operation of generally used scissors 1. Such scissors are opened and closed as follows: as shown in Fig. 6(a), the handle portion 1a is opened and closed from directly above with the hand 2, and cutting is performed with the blade portion 1b which is the shearing blade. Two sets of the handle portion 1a and the blade portion 1b are used, intersect at the intermediate connecting portion, and a support shaft is provided at the intersection portion. Among the two sets, a thumb ring for inserting the thumb is provided on one handle portion 1a, and another finger ring for inserting the other finger facing the thumb with the palm is provided on the other handle portion 1a. In such scissors 1, for both the thumb ring and the other finger ring, the fingers are inserted in the directly upward direction, that is, in the axial direction 1Z of the support shaft, and the opening and closing operation is performed. As shown in Fig. 6(b), when trying to open and close with the hand 2 inclined, it becomes shallow, so the opening and closing become difficult.

[0003] As shown in Fig. 6(b), in order to facilitate the opening and closing of the scissors 1 even when the hand 2 is inclined, etc., scissors have been proposed in which the direction of inserting the finger can be changed (for example, refer to Patent Documents 1, 2, 3). Patent Document 1 discloses a hairdressing and beauty scissors in which the direction of inserting the ring finger into the ring finger ring can be changed with respect to the blade portion. Patent Document 2 discloses scissors in which an annular portion corresponding to the finger ring is rotatable on a handle corresponding to one handle portion. Patent Document 3 discloses scissors in which a movable finger ring portion rotatable around an axis extending in the opening and closing direction of the blade portion is provided on one side of a handle corresponding to the handle portion. Patent Document 4 discloses a finger ring portion of scissors in which a rotating body is attached to one handle, and a finger ring is rotatably attached to this rotating body.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0005] Figure 7 shows the relationship of the insertion directions of the fingers of the hand 2 with respect to the scissors 1 in Patent Documents 1, 2, 3, and 4. The direction in which the blade portion 1b extends with respect to the support shaft is defined as the blade direction 1X, and the tangential direction when opening the blade portion 1b from the closed state is defined as the opening and closing direction 1Y. The blade direction 1X, the opening and closing direction 1Y, and the axial direction 1Z are perpendicular to each other. The insertion direction 1A that can be changed in Patent Documents 1 and 2 extends on a plane 1ax perpendicular to the blade direction 1X. The insertion direction 1A that can be changed in Patent Document 3 extends on a plane 1ay perpendicular to the opening and closing direction. Assuming that the insertion direction of the other finger is the axial direction 1Z, even if the insertion direction 1A of one finger is changed, the relationship of the directions such that the tips of the thumb and the other fingers approach each other when closing the palm is not established. Although Patent Document 4 is considered to be able to freely change the insertion direction of the fingers, it is considered to be unstable and have poor workability.

[0006] An object of the present invention is to provide a pair of scissors having a handle portion that improves workability.

Means for Solving the Problems

[0007] The present invention includes two cutting blades each including a handle portion serving as a grip, a blade portion provided with a shearing blade, and a connecting portion connecting the handle portion and the blade portion. The handle portion of one cutting blade has a thumb ring into which the thumb is inserted, and the other cutting blade has an other finger ring into which the other finger facing the thumb with the palm is inserted. The two cutting blades intersect at the connecting portion, and the two cutting blades are mutually rotatably supported by a support shaft provided at the intersection portion. In a pair of scissors capable of opening and closing between the two blade portions, At least one of the thumb ring and the other finger ring is formed such that the direction of inserting the thumb or the other finger intersects at an acute angle with the axial direction of the support shaft, the direction perpendicular to this axial direction, the blade direction in which the blade portion extends from the intersection portion, and the opening / closing direction perpendicular to both the axial direction and the blade direction and being the tangential direction when the blade portion opens and closes, respectively. A scissors characterized by this.

[0008] Further, in the present invention, in the thumb ring, the direction of inserting the thumb intersects at an acute angle with the axial direction, the blade direction, and the opening / closing direction, respectively, and in the other finger ring, the direction of inserting the other finger is parallel to the axial direction. Characterized by this.

[0009] Also, in the present invention, the handle portion of the cutting blade having the other finger ring has a finger hook for hanging a finger different from the other finger that faces the thumb with the palm. Characterized by this.

Advantages of the Invention

[0010] According to the present invention, since the direction of inserting the finger into the handle portion is formed in the direction of closing the thumb and the other finger with the palm, the angle of the hand when opening and closing the blade portion can be widened, and the workability can be improved.

[0011] Also, according to the present invention, the direction of inserting the thumb can be the direction of closing with respect to the other finger facing the palm.

[0012] Also, according to the present invention, the other finger facing the thumb with the palm can be inserted into the other finger ring or hooked on the finger hook, and the work can be carried out stably.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

MODE FOR CARRYING OUT THE INVENTION

[0014] Hereinafter, FIGS. 1 to 5 show the configuration and the concept of the opening and closing operation of the scissors 1 which is an embodiment of the present invention. Depending on the drawings, the description of the corresponding parts described in other drawings may be omitted. The description of each figure is made along the corresponding figure, but the description of the parts omitted in the corresponding figure may also be made using the reference numerals attached to other figures.

EXAMPLE

[0015] Figure 1 shows the front configuration of the scissors 10 according to the present invention in a closed state. Figure 2 shows the bottom configuration of the scissors 10 in an image of a model and a 3D image. The scissors 10 include two cutting blades 11 and 12 each having a handle part 11a, 12a serving as a handle, a blade part 11b, 12b provided with a cutting edge, and a connecting part 11c, 12c connecting the handle part 11a, 12a and the blade part 11b, 12b. The handle part 11a of one cutting blade 11 has a thumb ring 11aR into which the thumb is inserted, and the other cutting blade 12 has an other-finger ring 12aR into which the other fingers facing the thumb with the palm are inserted. Note that the handle part 12a of the other cutting blade 12 has finger hooks 12aS, 12aT, 12aU together with the other-finger ring 12aR. The ring finger can be inserted into the other-finger ring 12aR, and the index finger, middle finger, and little finger can be hooked on the finger hooks 12aS, 12aT, 12aU, respectively. The other fingers facing the thumb with the palm can be inserted into the other-finger ring 12aR or hooked on the finger hooks 12aS, 12aT, 12aU to proceed with the work stably. The two cutting blades 11 and 12 intersect at the connecting parts 11c and 12c. By a support shaft 13 provided at the intersection, the two cutting blades 11 and 12 are supported so as to be rotatable relative to each other, and the space between the two blade parts 11b and 12b can be opened and closed.

[0016] As shown in Fig. 3, the axial direction 10Z of the support shaft 3, the blade part direction 10X that is perpendicular to this axial direction 10Z and from which the blade part extends from the intersection part, and the opening / closing direction 1Y that is perpendicular to the axial direction 10Z and the blade part direction 1X and serves as the tangent line when opening and closing can be the orthogonal three axes serving as the reference for three-dimensional directions. In this embodiment, the direction 11A for inserting the thumb into the thumb ring 11aR is formed so as to intersect the orthogonal three axes 10X, 10Y, 10Z at acute angles α, β, γ respectively. Thereby, the insertion direction 11A of the thumb can be set as the closing direction with respect to the other fingers facing the palm. In this embodiment, although the insertion direction of the other fingers into the other finger ring 12aR is parallel to the axial direction 1Z, this insertion direction may also be inclined. That is, at least one of the thumb ring 11aR or the other finger ring 12aR is formed such that the direction for inserting the thumb or the other finger intersects the axial direction 10Z of the support shaft 13, the blade part direction 10X that is perpendicular to this axial direction 10Z and from which the closed blade parts 11b, 12b extend from the intersection part, and the opening / closing direction 1Y that is perpendicular to the axial direction 10Z and the blade part direction 10X and serves as the tangent line direction when the blade parts 11b, 12b open and close, at acute angles respectively.

[0017] Fig. 4 shows that the scissors 10 in Fig. 1 can be opened and closed at a wide range of angles. Fig. 4(a) shows the state of opening and closing from directly above the scissors 10, that is, from the 90-degree direction which is the axial direction 10Z of the support shaft 13, similar to Fig. 6(a). Fig. 6(b) shows that it can be opened and closed from a 135-degree obliquely upward direction. Fig. 6(c) shows that it can be opened and closed from a 45-degree obliquely forward upward direction. Fig. 6(d) shows that it can be opened and closed from 0 degrees, that is, from directly sideways. Fig. 6(e) shows that it can be opened and closed from a 315-degree obliquely downward direction. Fig. 6(f) shows that it can be opened and closed with the index finger standing up.

[0018] Fig. 5 shows the range of angles at which the opening and closing is possible in Fig. 4. The scissors 10 of this embodiment has a movable range of at least between 135 degrees and 315 degrees. Particularly in the cutting operation of closing between the blade parts 11b, 12b, force can be transmitted firmly and it can be made easy to cut, so the handle parts 11a, 12a that improve workability can be provided.

Explanation of Signs

[0019] 2 hands 10 shears 11, 12 cutting edges 11a, 12a handle parts 11b, 12b blade parts 11c, 12c connecting parts 11A insertion direction 11aR thumb ring 12aR other finger ring 12aS, 12aT, 12aU finger hooks 13 support shaft

Claims

1. It is provided with two cutting blades each having a handle part serving as a grip, a blade part provided with a cutting edge, and a connecting part connecting the handle part and the blade part. The handle part of one cutting blade has a thumb ring into which a thumb is inserted, and the other cutting blade has an other-finger ring into which another finger opposing the thumb with the palm is inserted. The two cutting blades intersect at the connecting part, and are supported rotatably relative to each other by a support shaft provided at the intersecting part. In a pair of scissors capable of opening and closing between the two blade parts, at least one of the thumb ring or the other-finger ring is formed such that the direction in which the thumb or the other finger is inserted intersects at an acute angle with the axial direction of the support shaft, a direction perpendicular to this axial direction, a blade part direction in which the blade part extends from the intersecting part, and an opening / closing direction perpendicular to both the axial direction and the blade part direction and being a tangential direction when the blade part opens and closes, respectively. A pair of scissors characterized by this.

2. In the thumb ring, the direction in which the thumb is inserted intersects at an acute angle with the axial direction, the blade part direction, and the opening / closing direction, respectively. In the other-finger ring, the direction in which the other finger is inserted is parallel to the axial direction. The pair of scissors according to Claim 1, characterized by this.

3. The handle part of the cutting blade having the other-finger ring has a finger hook on which a finger different from the other finger opposing the thumb with the palm is hooked. The pair of scissors according to Claim 1 or 2, characterized by this.

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