Sewing scissors

Abstract

To provide sewing scissors capable of easily cutting a fabric along a complex and delicate curve and exhibiting excellent operability.SOLUTION: Sewing scissors use for sewing comprise first and second scissor members connected about a rotation support point to form a pair. The first scissor member includes a first blade and a first grip formed long sandwiching the rotation support point. The second scissor member includes a second blade and a second grip formed long sandwiching the rotation support point. The first grip has a first finger hole into which a first finger is inserted. The second grip has finger holes into which second and third fingers are inserted, and finger hooks for hooking fourth and fifth fingers. The finger hooks bend wavy along the fourth and fifth fingers, and bend hook-shaped to face the entire belly or a half or more of a backside of the fifth finger in a peripheral direction and so that a side of the fifth finger facing the fourth finger is open.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] One aspect of the present invention relates to sewing scissors.

Background Art

[0002] Conventionally, there are sewing scissors suitable for cutting thick fabrics or cloth. Such sewing scissors are also called shears. Such sewing scissors generally have a configuration having two finger holes, a finger hole into which the first finger (thumb) is inserted and a finger hole into which two or more of the second finger to the fifth finger (index finger to little finger) are inserted. Patent Documents 1 and 2 disclose conventional sewing scissors.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] On the other hand, in the case of a hat or clothing with excellent design, it may be necessary to cut the fabric along a complicated curve. At this time, when cutting the fabric using conventional sewing scissors, since the finger holes are shaped with a margin, although there is an aspect that is easy to use regardless of the hand size, the fingers move freely in the finger holes, and it is difficult to transmit the delicate force adjustment from the fingers to the blade tip, and it is hard to say that it is suitable for cutting the fabric along a complicated and delicate curve. In addition, during use, the fingers moving freely in the finger holes may collide with each other, or the fingers may collide with the edge of the finger holes, and users who use the scissors for a long time may feel pain in their fingers. Therefore, in order to make it easier to cut the fabric along a complicated and delicate curve, scissors having excellent operability and comfort are required.

Means for Solving the Problems

[0005] To solve the above problems, the present invention provides the following means.

[0006] Sewing scissors according to one aspect of the present invention are sewing scissors used for sewing, comprising a pair of first and second scissor members connected around a pivot point. The first scissor member has an elongated first blade portion and a first gripping portion formed on either side of the pivot point. The second scissor member has an elongated second blade portion and a second gripping portion formed on either side of the pivot point. The first gripping portion has a first finger hole for inserting the first finger. The second gripping portion has finger holes for inserting the second and third fingers, and a finger hook portion for hooking the fourth and fifth fingers. The finger hook portion is curved in a wave-like manner along the fourth and fifth fingers, respectively, and is curved in a hook-like manner so as to face the entire belly and more than half of the back of the fifth finger in the circumferential direction, while leaving the side of the fifth finger facing the fourth finger open.

[0007] In the above-described sewing scissors, it is preferable that the finger rest is configured to contact the back of the fifth finger when the scissors are opened and to contact the pad of the fifth finger when the scissors are closed.

[0008] With sewing scissors of this configuration, when opening the scissors, the back of the fifth finger contacts the finger rest, and when closing the scissors, the pad of the fifth finger contacts the finger rest, making it easy to transmit force to the scissors in both cases. As a result, the scissors become easier to operate as intended by the user, and it becomes easier to cut fabrics and other materials along complex and delicate curves.

[0009] The sewing scissors of the present invention share some similarities with conventional hairdressing scissors. However, the sewing scissors of the present invention are designed to cut materials that have an unstable shape and are difficult to cut, while hairdressing scissors are designed to cut materials that are easy to cut but require careful handling to prevent over-cutting. Therefore, the two types of scissors have different configurations. Specifically, the sewing scissors of the present invention are designed to make it easy to apply force to the material being cut with all fingers during cutting, while also stabilizing the little finger when opening the scissors and making it easy to apply force in the opening direction using the principle of leverage. Furthermore, finger rests are provided to allow for delicate movements, such as those for the fourth and fifth fingers.

[0010] Furthermore, while hairdressing scissors are used with the first finger (thumb) facing downwards, sewing scissors, including the sewing scissors of the present invention, are used with the first finger facing upwards. Thus, because the way hairdressing scissors and sewing scissors are held is completely different, they are designed based on completely different philosophies.

[0011] In the sewing scissors described above, it is preferable that the finger holes of the second gripping portion include a second finger hole for inserting the second finger and a third finger hole for inserting the third finger.

[0012] With sewing scissors of this configuration, force is easily transmitted directly from the second and third fingers to the scissors, making it easier to control the scissors with greater precision.

[0013] In the above-described sewing scissors, it is preferable that the finger rest portion is curved such that the palm-side end face on the fifth finger side is closer to the palm than the palm-side end face on the fourth finger side.

[0014] With sewing scissors of this configuration, the finger rest can be made suitable for inserting the fifth finger, which is shorter than the fourth finger. Also, since sewing scissors are often placed on a table or other surface due to their usage, this shape makes them easy to pick up from the surface they are placed on.

[0015] In the sewing scissors described above, it is preferable that, in a plan view taken from the axial direction of the pivot point, the tip of the finger rest is located on the side of the first finger hole relative to the straight line extending in the longitudinal direction of the first and second blades that passes through the center of the pivot point.

[0016] With sewing scissors of this configuration, the tip of the finger rest can cut the object to be cut without contacting or interfering with the object to be cut or the table on which the object is placed.

[0017] In the above-described sewing scissors, it is preferable that at least one of the first, second, and third finger holes is provided with a detachable, annular ring member made of an elastic material.

[0018] With sewing scissors of this configuration, each finger hole can be designed to fit the finger more easily, allowing for more precise control of the scissors. Furthermore, by providing ring components of different sizes, it is possible to adjust the size of the finger holes to suit the user.

[0019] In the sewing scissors described above, the finger rest is formed so that the side of the fourth finger and the side of the fifth finger come into contact with each other when in use.

[0020] This type of sewing scissors configuration makes it easier to manipulate the scissors precisely. [Effects of the Invention]

[0021] According to the scissors for sewing of the present invention, by improving the operability, it is easy to operate as intended by the user, and it is possible to easily cut fabrics and the like along complex and delicate curves. In addition, since the scissors for sewing of the present invention has a shape that fits the fingers, even if used for a long time, it is difficult for the user to feel pain and fatigue in the fingers, and it can be used comfortably. Such scissors for sewing aims to contribute to "significantly increasing the proportion of young people and adults with the skills necessary for employment, decent work and entrepreneurship, such as technical and vocational skills" in SDGs that the applicant and inventors are working on, and it is an invention that can contribute.

Brief Description of the Drawings

[0022] [Figure 1] FIG. 1 is a plan view of the scissors for sewing as seen from the side of the first scissor member. [Figure 2] FIG. 2 is a plan view of the scissors for sewing as seen from the side of the second scissor member. [Figure 3] FIG. 3 is a plan view of the state where a finger is inserted into the scissors for sewing as seen from the side of the first scissor member. [Figure 4] FIG. 4 is a side view of the scissors for sewing.

Modes for Carrying Out the Invention

[0023] The scissors for sewing according to one aspect of the present invention has a configuration including finger holes and finger hooks having a shape along five fingers in order to easily cut fabrics along complex and delicate curves. In particular, the scissors for sewing of the present invention has a finger hook on which the fourth and fifth fingers can be hooked, and is configured to include a finger hook curved in a hook shape so that the fifth finger can be hooked.

[0024] Hereinafter, this embodiment will be described with reference to the accompanying drawings. For ease of understanding of the description, the same reference numerals are attached to the same components in each drawing as much as possible, and redundant descriptions are omitted.

[0025] Figures 1 and 2 are plan views of the sewing scissors 1 of this embodiment, where Figure 1 is a view from the side of the first scissor member 2, and Figure 2 is a view from the side of the second scissor member 3. Figure 3 is a diagram showing an image of the sewing scissors 1 with a user's finger inserted, as seen in the plan view of Figure 1.

[0026] As shown in Figures 1 and 2, the sewing scissors 1 consist of a first scissor member 2, a second scissor member 3, and a rotating screw 4. The first scissor member 2 and the second scissor member 3 are paired and connected to each other with the center of the rotating screw 4 as the pivot point. That is, the first scissor member 2 and the second scissor member 3 are configured so that one can rotate relative to the center of the rotating screw 4. The sewing scissors 1 are mainly used for sewing, such as cutting fabric, but are not necessarily limited to this use and may be used for tasks requiring delicate movements.

[0027] In this specification, the plan view of the sewing scissors 1 is a plan view taken from the axial direction of the rotating screw 4. The direction perpendicular to the axial direction of the rotating screw 4 is sometimes referred to as the side view in this specification.

[0028] [First scissor component] The first scissor member 2 is divided into a long first blade portion 21 and a first gripping portion 22, with the pivot point, which is the center of the axis of the rotating screw 4, in between. A through hole is formed in the first scissor member 2 at the position where the rotating screw 4 is attached, through which the rotating screw 4 can be inserted.

[0029] The first scissor member 2 and the second scissor member 3 are made of, for example, stainless steel.

[0030] The first blade portion 21 extends in the longitudinal direction, and one end face is polished or otherwise treated so that it becomes the cutting edge.

[0031] The first gripping portion 22 extends several centimeters from the position of the rotating screw 4 toward the opposite side of the cutting edge, along the longitudinal direction of the first blade portion 21. From this position, it bends toward the first finger hole 23 and is formed to extend in a direction having an angle of 30° to 60° with respect to the longitudinal direction. At the end of this extending portion, the first gripping portion 22 has a first finger hole 23, which has an elliptical annular shape in plan view that extends in the extending direction. This first finger hole 23 is an annular shape that extends along the width direction of the first finger into which it is inserted during use (see Figure 3). An annular ring member 23a made of an elastic material such as rubber or resin is detachably attached to the inside of the first finger hole 23.

[0032] A protrusion 24 is formed at the position where the first finger hole 23 faces the third finger hole 34. The protrusion 24 is formed to face the protrusion 36, which will be described later, and when the sewing scissors 1 is closed, it comes into contact with the protrusion 36 to restrict further rotation.

[0033] [Second scissor component] The second scissor member 3 is divided into a long second blade portion 31 and a second gripping portion 32, with the pivot point, which is the center of the axis of the rotating screw 4, in between. A through hole is formed in the second scissor member 3 at the position where the rotating screw 4 is attached, through which the rotating screw 4 can be inserted.

[0034] The second blade portion 31 extends in the longitudinal direction, and one end face is polished or otherwise treated so that it becomes the cutting edge. When in use, the cutting edge of this second blade portion 31 slides lightly past the cutting edge of the first blade portion 21, thereby cutting the fabric or other material to be cut.

[0035] The second gripping portion 32 extends several centimeters from the position of the rotating screw 4 in the opposite direction from the tip, along the longitudinal direction of the second blade portion 31. From this position, via a connecting portion, a second finger hole 33 and a third finger hole 34 are formed, each having an elliptical annular shape that extends in the direction of extension when viewed from above. These second finger holes 33 and third finger holes 34 are annular in shape that extends along the width direction of the second and third fingers that are inserted when in use (see Figure 3). Inside the second finger hole 33 and third finger hole 34, annular ring members 33a and 34a, made of an elastic material such as rubber or resin, are detachably attached.

[0036] A protrusion 36 is formed at the position where the third finger hole 34 faces the first finger hole 23. The protrusion 36 is formed to face the protrusion 24 and, when the sewing scissors 1 is closed, it comes into contact with the protrusion 24 and restricts further rotation.

[0037] In a plan view, the second gripping portion 32 of the second scissor member 3 is located on the side of the first finger hole 23, relative to the extension line of the end face on which the cutting edge of the second blade portion 31 is formed. In other words, when the sewing scissors 1 is closed, the second gripping portion 32 is formed on the side of the first finger hole 23, relative to the extension line of the end face on the opposite side from where the cutting edge of the second blade portion 31 is formed.

[0038] [Finger rest] At the end of the third finger hole 34 opposite to the second blade portion 31, a finger rest portion 35 is formed where the fourth and fifth fingers are placed during use. The finger rest portion 35 includes a curved portion 351 that follows the pad of the fourth finger, a convex portion 352 that is located between the fourth and fifth fingers, a curved portion 353 that follows the pad of the fifth finger, a top portion 354 that has a curved shape along the side of the fifth finger, a curved portion 355 that curves along the back of the fifth finger, and a tip portion 356 that is the tip of the curved portion 355 (see Figure 3). In other words, the finger rest portion 35 is curved in a wave-like manner by the curved portion 351, the convex portion 352, and the curved portion 353. The curved portion 353 that comes into contact with the fifth finger during use is curved in a hook shape in the circumferential direction of the fifth finger, facing more than half of the back of the fifth finger along the side from the pad of the fifth finger, while leaving the side of the fifth finger facing the fourth finger free. During use, the user's fourth and fifth fingers will come into contact with the device.

[0039] As shown in Figure 3, the tip 356 of the finger rest 35 is located on the side of the first finger hole 23, relative to the straight line A that extends in the longitudinal direction of the first blade portion 21 and the second blade portion 31, passing through the center of the pivot screw 4 which is the center of the pivot point.

[0040] As shown in Figure 4, when the sewing scissors 1 is viewed from the side indicated by arrow B in Figure 1, the finger rest portion 35 is curved such that the end face of the curved portion 355 into which the fifth finger is inserted, which faces the user's palm during use, is closer to the palm than the end face of the curved portion 353 into which the fourth finger is inserted (it is curved along arrow C with respect to the center line D of the sewing scissors 1 shown in Figure 4). In other words, the finger rest portion 35 is curved so that the fifth finger side is closer to the user's palm than the fourth finger side. This shape is intended to ensure that both the fourth and fifth fingers make proper contact with the finger rest portion 35 near the first joint, since the fifth finger is shorter than the fourth finger.

[0041] Furthermore, since sewing scissors 1 are often placed on a table or other surface due to their usage, the curved shape of the finger rest 35 makes them easy to lift from the surface they are placed on.

[0042] [Rotating screw] The rotating screw 4 connects the first scissor member 2 and the second scissor member 3 so that they can rotate relative to each other.

[0043] [Operation during use] When a user uses the sewing scissors 1, the user's first, second, and third fingers are inserted into the first finger holes 23, 2nd finger hole 33, and 3rd finger hole 34, respectively, up to the first joint. The user's fourth and fifth fingers are placed on the finger rests 35, each up to the first joint. At this time, the sides of the fourth and fifth fingers come into contact with each other. This contact between the fourth and fifth fingers makes it easier to operate the sewing scissors 1 more smoothly.

[0044] When the user opens the sewing scissors 1, force is applied in the opening direction from the user's first, second, and third fingers to the first and second scissor members 2 and 3, and the back of the fifth finger comes into contact with the curved portion 355.

[0045] On the other hand, when the user closes the sewing scissors 1, the user's first, second, and third fingers apply force in the closing direction to the first scissor member 2 and the second scissor member 3, and the pads of the fourth and fifth fingers come into contact with the curved portion 351 and the curved portion 353, respectively.

[0046] In this embodiment, the sewing scissors 1 are configured such that when opening the scissors, the back of the fifth finger contacts the finger rest 35, and when closing the scissors, the pad of the fifth finger contacts the finger rest 35, making it easy to transmit force to the scissors in both cases. As a result, the scissors can be easily operated as intended by the user, making it easier to cut fabrics and other materials along complex and delicate curves.

[0047] Furthermore, the sewing scissors 1 are designed to fit the fingers, making it less likely for the user to experience pain or fatigue in their fingers even after prolonged use.

[0048] Furthermore, in the sewing scissors 1, as shown in Figure 3, in a plan view taken from the axial direction of the pivot screw 4 which serves as the pivot point, the tip 356 of the finger rest 35 is positioned on the side of the first finger hole relative to the straight line A that extends in the longitudinal direction of the first blade 2 and the second blade 3, passing through the center of the pivot point. With this configuration, the tip 356 of the finger rest 35 can cut the object to be cut without contacting or interfering with the object to be cut or the table on which the object to be cut is placed.

[0049] [Differentiation] The sewing scissors 1 of this embodiment may have the following configuration, for example.

[0050] While sewing scissors 1 are configured with a second finger hole 33 and a third finger hole 34 for inserting the second and third fingers independently, they may also be configured with finger holes into which both the second and third fingers can be inserted. Even in this case, if there is too much play in the second and third fingers, delicate movements will become difficult, so the finger holes should be large enough to allow insertion up to the first joint of the second and third fingers.

[0051] The lengths of the first blade 21 and the second blade 31 of the sewing scissors 1 can be arbitrarily changed. On the other hand, the size of the first gripping part 22 and the second gripping part 32 depends on the size of the user's hand and cannot be made smaller than a certain size.

[0052] An elastic member, similar to the ring members 23a, 33a, and 34a, may be attached to the finger rest 35. Furthermore, the ring members 23a, 33a, and 34a are not essential; the device may be configured without these ring members as long as each finger can operate the sewing scissors 1 in contact with it near the first joint. Also, the ring members 23a and 33a do not necessarily need to be annular; they only need to be formed to contact the area around the finger being inserted. [Explanation of Symbols]

[0053] 1…Sewing scissors 2…First scissor component 21...1st blade part 22...First gripping part 23…First finger hole 3…Second scissor component 31…Second blade part 32...Second gripping part 33…Second finger hole 34…Third finger hole 35...Finger rest part 23a, 33a, 34a... Ring members 4… Rotary screw

Claims

1. A pair of sewing scissors, comprising a first scissor member and a second scissor member connected around a pivot point, is used for sewing. The first scissor member has an elongated first blade portion and a first gripping portion formed on either side of the pivot point, The second scissor member has an elongated second blade portion and a second gripping portion formed on either side of the pivot point, The first gripping portion has a first finger hole for inserting a first finger, The second gripping portion has finger holes for inserting the second and third fingers, and finger rests for placing the fourth and fifth fingers. The finger rest is curved in a wave-like manner along the fourth and fifth fingers, and is curved in a hook-like manner so as to face the ventral side of the fourth finger with its dorsal side open, and face the entire circumferential surface of the fifth finger and more than half of the dorsal side, while the side of the fifth finger facing the fourth finger is open. Sewing scissors.

2. The finger holes of the second gripping portion include a second finger hole for inserting the second finger and a third finger hole for inserting the third finger. Sewing scissors according to claim 1.

3. The finger rest portion contacts the back of the fifth finger when the scissors are opened and contacts the pad of the fifth finger when the scissors are closed. Sewing scissors according to claim 1.

4. The finger rest portion is curved such that the palm-side end face on the fifth finger side is more palm-side than the palm-side end face on the fourth finger side. Sewing scissors according to any one of claims 1 to 3.

5. In a plan view from the axial direction of the pivot point, the tip of the finger rest is located on the side of the first finger hole that is equal to the straight line extending in the longitudinal direction of the first and second blades passing through the center of the pivot point. Sewing scissors according to claim 1.

6. At least one of the first, second, and third finger holes is provided with a removable, annular ring member made of an elastic material. Sewing scissors according to claim 2.

7. The finger rest is formed such that the side surface of the fourth finger and the side surface of the fifth finger come into contact with each other when in use. Sewing scissors according to claim 1.

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