Scissors

Abstract

Provided is a pair of scissors which can be used by infants and the like at ease even without a protective cover for covering a cutting edge line. A pair of scissors (1) is provided with: a first body section (10) having a first blade section (11) and a first handle section (13); and a second body section (20) having a second blade section (21) and a second handle section (23). The scissors (1) are configured such that the first blade section (11) and the second blade section (21) can be opened and closed. The first blade section (11) has: a first blade tip section (31); a first blade back part (14) extending from the first blade tip part (31) and supported at both ends; and a first blade line section (15) separated from the first blade back section (14) and extending from the first blade tip section (31) toward the first handle section (13). Only the first blade tip section (31) side of both ends of the first blade line section (15) is supported.

Description

Technical Field

[0001] The present invention relates to scissors and the like that can be used by young children and the like with peace of mind. Background Art

[0002] Conventionally, various scissors have been invented and designed. In Patent Document 1, safe scissors equipped with a substantially bag-shaped protective cover are described. The protective cover is attached in a form that covers the cutting edges of the scissor blades. A gap into which an object to be cut can be inserted is provided in the protective cover.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2004-154206 Summary of the Invention

[0006] Technical Problem to be Solved by the Invention

[0007] Conventional scissors require a protective cover in addition to the scissor body, so the number of components increases accordingly.

[0008] The present invention has been made in view of such circumstances, and an object thereof is to realize scissors that can be used by young children and the like with peace of mind even without a protective cover covering the cutting edges.

[0009] Solution to the Above Technical Problem

[0010] To solve the above technical problem, a first invention is a pair of scissors including: a first main body portion having a first blade portion and a first handle portion; and a second main body portion having a second blade portion and a second handle portion, the pair of scissors being configured such that the first blade portion and the second blade portion can open and close, the first blade portion having: a first tip portion; a first blade back portion extending from the first tip portion and supported at both ends; and a first cutting edge portion separated from the first blade back portion and extending from the first tip portion toward the first handle portion side, and only the first tip portion side of both ends of the first cutting edge portion is supported.

[0011] A second invention is that, in the first invention, the second blade portion has: a second tip portion; a second blade back portion extending from the second tip portion and supported at both ends; and a second cutting edge portion separated from the second blade back portion and extending from the second tip portion toward the second handle portion side, and only the second tip portion side of both ends of the second cutting edge portion is supported.

[0012] A third invention is that, in the first or second invention, in order to prevent the first blade portion and the second blade portion from being hooked when closing the pair of scissors, a guiding portion is provided on the root side of the first cutting edge portion, and the guiding portion moves the second blade portion to the side opposite to the first blade portion when the second blade portion abuts.

[0013] The fourth invention is that in the first or second invention, the first main body portion has a first intermediate portion provided between the first blade portion and the first handle portion, and the second main body portion has a second intermediate portion provided between the second blade portion and the second handle portion. The fourth invention further includes: a pin member that is inserted through the first intermediate portion and the second intermediate portion to rotatably connect the first main body portion and the second main body portion; and a cover that is a member attached to the first intermediate portion by the pin member and covers the gap between the root side of the first blade line portion and the first intermediate portion from the outside.

[0014] The fifth invention is that in the first or second invention, there is further provided an elastic deformation portion that biases the first blade portion and the second blade portion toward the closing side in the closed state of the scissors.

[0015] Advantages of the Invention

[0016] In the present invention, at least in the first blade portion, the first blade line portion has a cantilever structure in which only the first tip portion side of the two ends is supported, and further extends separated from the first back portion of the blade. Therefore, the first blade line portion is easily deflected toward the back portion of the blade. Accordingly, a soft object such as paper can be cut by the pair of blade portions. At the same time, when the pair of blade portions accidentally pinch a finger strongly, by being configured to deflect the first blade line portion toward the back portion of the blade, the possibility of finger injury is reduced. Here, in scissors, the closer the position where the finger contacts is to the root side of the blade, the easier it is to cut the finger. However, the first blade line portion is more easily deflected toward the root side of the blade. Therefore, the possibility of finger injury at the root side is also small. According to the present invention, it is possible to realize scissors that allow infants and the like to use them with confidence even without a protective cover covering the blade line. Description of the Drawings

[0017] Figure 1 (a) is a perspective view of the closed state of the scissors according to the embodiment as viewed from the front side, Figure 1 and (b) is a perspective view of the open state of the scissors as viewed from the front side.

[0018] Figure 2 (a) is a front view of the first main body portion of the scissors according to the embodiment, Figure 2 and (b) is a front view of the second main body portion, Figure 2 and (c) is a front view of the cover.

[0019] Figure 3 (a) is Figure 1 a cross-sectional view taken along line A-A of (a), Figure 3 (b) is Figure 1 a cross-sectional view taken along line B-B of (a), Figure 3 (c) is Figure 1 a cross-sectional view taken along line C-C of (b).

[0020] Figure 4 Figure (a) of [0] is a front view of the state where the cover of the scissors in the embodiment is removed. Figure 4 Figure (b) of [1] is Figure 4 an enlarged view of the area within the dashed lines described in Figure (a) of [2]. Detailed Embodiment

[0021] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Additionally, the following embodiments are examples of the present invention and are not intended to limit the scope of the present invention, its applications, or its uses.

[0022] [Configuration of Scissors]

[0023] This embodiment is a pair of scissors 1 for children. As shown in Figures (a) and (b) of [3], the scissors 1 are configured to include: a first main body portion 10 having a first blade portion 11 and a first handle portion 13; and a second main body portion 20 having a second blade portion 21 and a second handle portion 23, where the first blade portion 11 and the second blade portion 21 can be opened and closed. The finger holes of the first handle portion 13 are smaller than those of the second handle portion 23 and are for the thumb. Fingers are inserted into the finger holes of the respective handle portions 13 and 23 from the back side of the scissors of [4]. The first blade portion 11 corresponds to the moving blade, and the second blade portion 21 corresponds to the stationary blade. The first main body portion 10 and the second main body portion 20 are made of hard resin. However, the main body portions 10 and 20 are not limited to being made of hard resin. Figure 1 Figure (a) and (b) of [5] Figure 1 The first main body portion 10 further has a first intermediate portion 12 provided between the first blade portion 11 and the first handle portion 13. In the first main body portion 10, the first blade portion 11, the first intermediate portion 12, and the first handle portion 13 are integrally formed. The second main body portion 20 further has a second intermediate portion 22 provided between the second blade portion 21 and the second handle portion 23. In the second main body portion 20, the second blade portion 21, the second intermediate portion 22, and the second handle portion 23 are integrally formed. The scissors 1 further include: a center screw 5 inserted through the first intermediate portion 12 and the second intermediate portion 22, and a pair of covers 6 mounted on the intermediate portions 12 and 22 using the center screw 5. The center screw 5 corresponds to a pin member and rotatably connects the first main body portion 10 and the second main body portion 20.

[0024] When the scissors 1 are in the closed state, the front sides of the first blade portion 11 and the first intermediate portion 12 overlap with the front sides of the second blade portion 21 and the second intermediate portion 22. On the outer peripheral surface of the first handle portion 13, the first intermediate portion 12 is connected to the front side (the upper side in [6]) in the thickness direction of the scissors 1, and the second intermediate portion 22 faces the back side in the thickness direction with a gap therebetween. On the outer peripheral surface of the second handle portion 23, on the back side (the lower side in [7]) in the thickness direction of the scissors 1

[0025] Figure 1 Figure 1A second intermediate portion 22 is connected to the lower side (in the figure), and the first intermediate portion 12 faces the front side in the thickness direction with a gap therebetween.

[0026] As Figure 2 As shown in (a) of [], the first blade portion 11 includes a first tip portion 31, a first back portion 14 that extends from the first tip portion 31 to the first intermediate portion 12 and is supported at both ends, and a first cutting edge line portion 15 that is separated from the first back portion 14 and extends from the first tip portion 31 toward the first intermediate portion 12 side (the first handle portion 13 side). As Figure 2 As shown in (b) of [], the second blade portion 21 includes a second tip portion 32, a second back portion 24 that extends from the second tip portion 32 to the second intermediate portion 22 and is supported at both ends, and a second cutting edge line portion 25 that is separated from the second back portion 24 and extends from the second tip portion 32 toward the second intermediate portion 22 side (the second handle portion 23 side).

[0027] As Figure 2 As shown in (a) and (b) of [], when viewed from the front, the first back portion 14 and the second back portion 24 are each formed in a straight bar shape. When viewed in cross section, the back portions 14, 24 are formed in a substantially rectangular shape (see Figure 3 ). The tip side of the back portions 14, 24 is connected to the tip portions 31, 32, and the root side is connected to the intermediate portions 12, 22.

[0028] When viewed from the front, the first cutting edge line portion 15 and the second cutting edge line portion 25 are each formed in a straight bar shape. When viewed in cross section, the cutting edge line portions 15, 25 are formed in a substantially rectangular shape (see Figure 3 ). The cutting edge line portions 15, 25 are in a cantilever structure with only the tip portion 31, 32 side of both ends being supported. The tip side of the cutting edge line portions 15, 25 is connected to the tip portions 31, 32, and the root side faces the intermediate portions 12, 22 with a gap X therebetween. The cutting edge line portions 15, 25 extend from the tip portions 31, 32 to the vicinity of the intermediate portions 12, 22.

[0029] The cutting edge line portions 15, 25 are arranged to be substantially parallel to the back portions 14, 24. Spaces 16, 26 that allow the cutting edge line portions 15, 25 to flex toward the back portions 14, 24 are formed between the cutting edge line portions 15, 25 and the back portions 14, 24. The spaces 16, 26 are surrounded by the cutting edge line portions 15, 25, the back portions 14, 24, the tip portions 31, 32, and the intermediate portions 12, 22 except for the root side of the cutting edge line portions 15, 25. The width of the spaces 16, 26 can be set to 5 mm or more, for example.

[0030] The first tip portion 31 and the second tip portion 32 are each curved in a substantially U-shaped curve. The outer peripheries of the tip portions 31 and 32 are curved throughout their entire lengths. On the outer peripheries of the tip portions 31 and 32, the curvature on the side of the cutting edge portions 15 and 25 is greater than that on the side of the back portions 14 and 24 of the blade. In addition, the outer peripheral shape of the tip portions 31 and 32 is not limited by this embodiment.

[0031] As Figure 3 shown in (a) of [], the outer peripheral surface 15d (the side surface opposite to the first back portion 14 of the blade) of the first cutting edge portion 15 and the outer peripheral surface 25d (the side surface opposite to the second back portion 24 of the blade) of the second cutting edge portion 25 are formed as flat surfaces. The outer peripheral surface 15d of the first cutting edge portion 15 extends substantially perpendicular to the front and back surfaces of the first cutting edge portion 15. The outer peripheral surface 25d of the second cutting edge portion 25 extends substantially perpendicular to the front and back surfaces of the second cutting edge portion 25.

[0032] Here, since the cutting edge portions 15 and 25 have a cantilever structure, if the first cutting edge portion 15 deflects toward the second cutting edge portion 25, or the second cutting edge portion 25 deflects toward the first cutting edge portion 15, there is a possibility that the outer peripheral surface 15d of the first cutting edge portion 15 will catch on the outer peripheral surface 25d of the second cutting edge portion 25 when the scissors 1 are closed. If it becomes such a state, the scissors 1 cannot be closed smoothly. In this embodiment, in order to prevent such a state, as Figure 2 shown in (a) and (b) of [], on the root side of the outer peripheral surfaces 15d and 25d of the cutting edge portions 15 and 25, a first guiding projection 17 and a second guiding projection 27 that protrude toward the side opposite to the back portions 14 and 24 of the blade are respectively provided. The guiding projections 17 and 27 correspond to guiding portions.

[0033] As Figure 3 shown in (b) of [], the first guiding projection 17 has a first inclined surface 17a that is inclined so as to approach the front surface side from the back surface of the first cutting edge portion 15 as it approaches the front end. The second guiding projection 27 has a second inclined surface 27a that is inclined so as to approach the back surface side from the front surface of the second cutting edge portion 25 as it approaches the front end. When viewed in cross-section, the guiding projections 17 and 27 are substantially triangular in shape. In this embodiment, as Figure 3 shown in (c) of [], when the scissors 1 are closed, if the first cutting edge portion 15 abuts against the second guiding projection 27, the second guiding projection 27 pushes the first cutting edge portion 15 toward the front surface side to move it, and if the second cutting edge portion 25 abuts against the first guiding projection 17, the first guiding projection 17 pushes the second cutting edge portion 25 toward the back surface side to move it. Therefore, it is possible to prevent the first cutting edge portion 15 from catching on the second cutting edge portion 25.

[0034] When viewed from the front, the intermediate portions 12 and 22 are formed in a substantially circular shape (refer to Figure 2((a) and (b)). Screw holes 33 and 34 for inserting the center screw 5 are formed in the central portions of the intermediate portions 12 and 22. As Figure 4 (a) and Figure 4 (b) shown, a spring storage chamber 35 for storing the coil spring 30 is formed in the first intermediate portion 12. The coil spring 30 corresponds to the elastically deformable portion. As the elastically deformable portion, other springs (such as leaf springs) can also be used, or the scissors 1 without the coil spring 30 can be provided. In addition, in Figure 4 (a), the description of the coil spring 30 is omitted.

[0035] The spring storage chamber 35 is constituted by an arc-shaped through-hole centered on the screw hole 33. In order to make it easy for the coil spring 30 to enter from the outside, a straight portion 35a is provided on the inner peripheral side of the spring storage chamber 35 so as to be widened. In the second intermediate portion 22, in a region overlapping the spring storage chamber 35 in the closed state of the scissors 1, an arc-shaped through-hole 36 centered on the screw hole 34 is formed (refer to Figure 2 (b)). The circumference of the through-hole 36 is shorter than that of the spring storage chamber 35, and a protrusion 37 inserted into the spring storage chamber 35 is formed at the edge portion on the back side of the blade of the through-hole 36. The protrusion 37 has a protruding length corresponding to hooking on the coil spring 30.

[0036] In the state where the scissors 1 are closed, the protrusion 37 is in a state of being inserted into the spring storage chamber 35. If you want to open the scissors 1 from this state, the protrusion 37 will move from the blade side of the first blade portion 11 toward the back side in the spring storage chamber 35, and the coil spring 30 will contract as it moves. The coil spring 30 biases the first blade portion 11 and the second blade portion 21 toward the closed side in the closed state of the scissors 1. Therefore, when the scissors 1 are placed and no one is using them, the scissors 1 are in the closed state. In addition, due to the presence of the coil spring 30 and the protrusion 37, the opening angle of the scissors 1 is limited.

[0037] The first handle portion 13 and the second handle portion 23 are each annular due to the formation of finger holes. When viewed from the front, the handle portions 13 and 23 include: inner portions 13a and 23a that are close to each other in the closed state of the scissors 1; and outer portions 13b and 23b that extend from one end side to the other end side of the inner portions 13a and 23a. In order to prevent the fingers from being pinched between the inner portions 13a and 23a, plate-like protrusions 19 and 29 protruding toward the front side are provided on the front side of the inner portions 13a and 23a (refer to Figure 2 (b)). In addition, hitting points are provided on the opposing side surfaces of the first inner portion 13a and the second inner portion 23a, respectively.

[0038] A pair of covers 6 are components installed on the intermediate portions 12 and 22 by means of pin members 5. The pair of covers 6 consists of a first cover 6 installed on the front side of the first intermediate portion 12 and a second cover 6 installed on the back side of the second intermediate portion 22. Screw holes 33 and 34 for inserting the center screw 5 are formed in each cover 6. When viewed from the front, each cover 6 has an arc portion 6a with a substantially arc-shaped outer peripheral shape and a protruding portion 6b extending laterally from the arc portion 6a (refer to Figure 2 (c)). The protruding portion 6b covers the gap X between the root side of the cutting edge portion 15, 25 and the intermediate portions 12, 22 from the outside. In addition, protrusions 6c are formed on the back surface of each cover 6 to be inserted into the holes 38 and 39 of each intermediate portion 12 and 22. The protrusions 6c and the holes 38 and 39 function as anti-rotation members for the cover 6.

[0039] [Effects of the Embodiment, etc.]

[0040] In the present embodiment, in each of the first blade portion 11 and the second blade portion 21, the cutting edge portions 15 and 25 are in a cantilever structure in which only the tip portions 31 and 32 sides of the two ends are supported, and further extend separately from the back blade portions 14 and 24. Therefore, the cutting edge portions 15 and 25 are likely to flex toward the back blade portions 14 and 24. Moreover, with the pair of blade portions 11 and 21, a soft object such as paper can be cut. At the same time, when the pair of blade portions 11 and 21 accidentally clamp a finger strongly, since the cutting edge portions 15 and 25 flex toward the back blade portions 14 and 24 like a spring, the angle between the cutting edge portions 15 and 25 approaches 0 degrees, and it is difficult to transmit force to the finger due to the flexure of the cutting edge portions 15 and 25, so the possibility of finger injury becomes smaller. Among the cutting edge portions 15 and 25, the root side that is more likely to flex can achieve this effect. In the present embodiment, on the root side where finger injury is likely to occur in an ordinary pair of scissors, the possibility of finger injury is also small. In particular, since the pair of blade portions 11 and 21 are made of hard resin, the possibility of injury is extremely small. According to the present embodiment, it is possible to realize a pair of scissors 1 that can be used by infants and the like with confidence. In addition, it is also possible to avoid the situation of cutting charging cables, curtains, etc. when used by infants.

[0041] In addition, in the present embodiment, the gap X between the root side of the cutting edge portions 15 and 25 and the intermediate portions 12 and 22 is covered from the outside by the cover 6, so it is possible to prevent an object from being hooked on the root side of the cutting edge portions 15 and 25, causing the cutting edge portions 15 and 25 to bend and be damaged.

[0042] In addition, in the present embodiment, through the spiral spring 30, in the closed state of the scissors 1, the first blade portion 11 and the second blade portion 21 are strongly biased toward the closed side. Therefore, if an infant does not operate the scissors 1 with the correct holding method, the blade portions 11 and 21 cannot be opened. Thus, it is easy for infants to remember the correct holding method of the scissors. In addition, the scissors 1 will not be placed in an open state.

[0043] [Other Embodiments]

[0044] In the above-described embodiment, both the first blade portion 11 and the second blade portion 21 are cantilever structures, but only one of them may be a cantilever structure.

[0045] In the above-described embodiment, finger holes are formed in the first handle portion 13 and the second handle portion 23, but the finger holes may not be formed.

[0046] In the above-described embodiment, the cover 6 may be omitted, and the cover 6 may not cover the above-mentioned gap X.

[0047] Industrial Applicability

[0048] The present invention can be applied to scissors that can be used by infants and the like with confidence.

[0049] Description of Reference Numerals

[0050] 1 Scissors

[0051] 10 First main body portion

[0052] 11 First blade portion

[0053] 12 First intermediate portion

[0054] 13 First handle portion

[0055] 14 First back of blade portion

[0056] 15 First cutting edge line portion

[0057] 20 Second main body portion

[0058] 21 Second blade portion

[0059] 22 Second intermediate portion

[0060] 23 Second handle portion

[0061] 24 Second back of blade portion

[0062] 25 Second cutting edge line portion

[0063] 31 First tip portion

[0064] 32 Second tip portion.

Claims

1. A pair of scissors, characterized in that: have: a first body portion having a first blade portion and a first handle portion; and a second main body having a second blade portion and a second handle portion, The scissors are configured such that the first blade portion and the second blade portion can be opened and closed. The first blade portion comprises: a first blade tip portion; a first blade back portion extending from the first blade tip portion and supported at both ends; and a first blade line portion separated from the first blade back portion and extending from the first blade tip portion toward the first handle portion. Of the two ends of the first blade line portion, only the first blade tip portion side is supported.

2. The scissors according to claim 1, characterized in that: The second blade portion comprises: a second blade tip portion; a second blade back portion extending from the second blade tip portion and supported at both ends; and a second blade line portion separated from the second blade back portion and extending from the second blade tip portion toward the second handle portion side. Of the two ends of the second edge line portion, only the second cutting edge portion side is supported.

3. The scissors according to claim 1 or 2, characterized in that: In order to prevent the first blade portion and the second blade portion from being hooked when the scissors are closed, a guide portion is provided on the blade root side of the first blade line portion, and the guide portion moves the second blade portion to the side opposite to the first blade portion when the second blade portion abuts.

4. The scissors according to claim 1 or 2, characterized in that: The first body portion has a first intermediate portion disposed between the first blade portion and the first handle portion. The second body portion has a second intermediate portion disposed between the second blade portion and the second handle portion. The scissors also have: a pin member inserted through the first intermediate portion and the second intermediate portion to rotatably connect the first main body portion and the second main body portion; and A cover is a member mounted on the first intermediate portion by the pin member, and covers a gap between the blade root side of the first blade line portion and the first intermediate portion from the outside.

5. The scissors according to claim 1 or 2, characterized in that: An elastic deformation portion is further provided for applying force to a side where the first blade portion and the second blade portion are closed when the scissors are in a closed state.

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