CN203527492U - Improved scissors - Google Patents
Improved scissors Download PDFInfo
- Publication number
- CN203527492U CN203527492U CN201320705569.9U CN201320705569U CN203527492U CN 203527492 U CN203527492 U CN 203527492U CN 201320705569 U CN201320705569 U CN 201320705569U CN 203527492 U CN203527492 U CN 203527492U
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- scissors
- shearing blade
- blade
- shearing
- pivot
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- 238000010008 shearing Methods 0.000 claims description 62
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 238000013459 approach Methods 0.000 description 5
- 239000004744 fabric Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
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Abstract
The utility model discloses improved scissors. The distance between an insertion point of scissors edges on the left and the right and a rotating center is set to be Z in the shape of the curve arc scissors edge of the scissors in the opening state of the scissors, a connection line of the intersection point of the scissors edges on the left side and the right side and the rotating center is set to be a rotating reference line X, the distance from the rotating center of the scissors and the scissors edges on the left side and the right side is set to be r mm, the angle formed between the connection lines of the fixed point D on the two sides and the rotating center is set to be theta, the included angle formed between tangent lines of the scissors edges on the left side and the right side at the fixed point D is set to be Y, and an equation on polar coordinates in the scissors edge shape meets the following formula that r2= 2*a*cos(2*theta), wherein a is a constant set randomly according to the size of the scissors, and the value of r is a when the theta is 30 degrees. The scissors are convenient to use and save labor.
Description
Technical field:
The utility model relates to scissors product technical field, refer in particular to a kind of modified form scissors, this modified form scissors has a curve arc shearing blade, and this shearing blade is from the root that approaches scissors shaft to head, all can to cutting object, shear easily, very convenient to use.
Background technology:
Scissors is the twolip instrument of the sheets such as cutting cloth, paper, steel plate, rope, round steel or thread-shaped body, and two-edged is staggered, can folding.
The shearing blade of existing scissors is straight line or close to the orthodrome of straight line; In shearing article, approach two blades of scissors shaft root because of angle large (approximately 70 degree left and right), cutting object can be released by two shearing blades, and the blade of scissors head is while shearing article, because lever principle, shear effort or cut constantly, using very inconveniently, user is caused to great puzzlement.
In addition, user, when using existing scissors, when user must open larger angle by two handles of scissors (approximately 70 degree left and right), could utilize the shearing blade of scissors completely, the length of carrying out single shearing just reaches the longest, has increased like this fatigue strength of user's hand.Particularly, existing scissors is when shearing as article such as thick cloth, although can keep a firm hand on cutting object, keep cutting object between the root of two blades, and apply energetically cutting object is sheared, but because the initial angle of two blades becomes large, cause cutting object can from the root of blade, be pushed by blade to the head of blade, cause shearing difficulty and maybe cannot shear cutting object, therefore, extremely inconvenient when existing scissors is sheared as things such as thick cloth shearing.
In view of this, the inventor proposes following technical scheme.
Utility model content:
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of modified form scissors is provided, and this modified form scissors has a curve arc shearing blade, and this shearing blade is from the root that approaches scissors shaft to head, all can to cutting object, shear easily, very convenient to use.
In order to solve the problems of the technologies described above, the utility model has adopted following technical proposals: a kind of modified form scissors, in the shape of the curve arc shearing blade of this scissors, opening under the state of this scissors, the crosspoint that the shearing blade of the right and left is intersected and the distance between pivot are made as Z, the crosspoint that the shearing blade that connects described the right and left is intersected and the connecting line of pivot are set as rotating datum line X, by the pivot from described scissors till the distance of the fixed point D the shearing blade of the right and left is set as r mm, the fixed point D of shearing blade on described connection one side and the mutual angulation of the connecting line of pivot are made as to θ, the angle that the shearing blade of the described left and right sides is formed between the tangent line at described fixed point D place is made as Y, represent that the equation on the polar coordinates of described shearing blade shape meets following formula: r
2=2a
2cos (2 θ), wherein, a is the constant that can set arbitrarily according to the big or small length of scissors, and when θ be 30 while spending, the value of r equals a.
Furthermore, in technique scheme, described angle Y is made as π/5(rad)-π/7(rad).
Furthermore, in technique scheme, the value of described angle theta is 0-44 °.
Adopt after technique scheme, the utility model has following beneficial effect compared with prior art: in the utility model, have a curve arc shearing blade, make no matter user is the scissors of opening of larger limit, still more by a small margin open scissors, the angle of two shear blade all can keep best angle, this shearing blade, from the root that approaches scissors shaft to head, all can be sheared cutting object easily, very convenient to use.Because the equation on the polar coordinates of curve arc shearing blade meets following formula: r
2=2a
2cos (2 θ), because a is constant, so can adjust numerical value with different crowd, designs the scissors of different big or small length, supplies different crowd with one hand scissors easy to use.
Accompanying drawing explanation:
Fig. 1 is the structural representation of the utility model collapse state;
Fig. 2 is the structural representation of the utility model opening;
Fig. 3 is the right view of Fig. 1;
Description of reference numerals:
11 first scissor body 110 shanks
111 grip position 112 connecting portions
113 finger hole 114 connecting elements
12 second scissor body 2 shear blades
201 root 202 heads
21 shearing blade 211 rear portions
22 knife back
The specific embodiment:
Below in conjunction with specific embodiments and the drawings, the utility model is further illustrated.
Shown in Fig. 1-3, structural representation for a kind of modified form scissors, this modified form scissors comprise the first scissor body 11, the second scissor body 12 that are hinged of left and right and be arranged at respectively the first scissor body 11 and the second scissor body 12 on be microscler tabular shear blade 2, wherein, this shear blade 2 is made as shearing blade 21 by one side, and another side is made as to the knife back 22.
The first described scissor body 11 comprises: the gripping position 111 with finger hole 113, shank 110, connecting portion 112 that one is fixing, this connecting portion 112 has the screw as connecting elements 114, by rotating connection the first scissor body 11 of this screw and the second scissor body 12.
Described shearing blade 21 presents curve arc shape, meanwhile, root 201 shapes of shear blade 2 are set as: the end of root 201 sides of shear blade 2 connects and has the shape that grips the state that the side of the shank 110 of position 111 and the connecting portion 112 of the first scissor body 11 also will retreat.
The curve arc shape of described shearing blade 21 is not till root 201 is set as consistent curvature by the head by shear blade 2 202, but in the shear blade 2 of left and right, make the curvature of shearing blade 21 be varied to head 202 sides with respect to shear blade 2, dwindle gradually the radius of curvature of root 201 sides, in other words, be increased to gradually the curvature of root 201.
Described formed being shaped as of the knife back that is positioned at this shear blade 2 22: connect the shape to the side of connecting portion 112 by the head 202 of shear blade 2 with the curvature smooth curve of large radius.In addition, shear blade 2 is: shearing blade 21 bends to the intermediate width making between head 202 and root 201 and broadens.In addition, the shearing blade 21 that is arranged in the root 201 of shear blade 2 is arranged on to the position by the side afterbody of connecting portion 112, in the root 201 side end positions of shear blade 2, forms the rear portion 211 of shearing blade 21.
So, the curve arc shape of shearing blade 21 is: the radius of curvature of root 201 sides is less than the radius of curvature of head 202 sides of shear blade 2, and namely, curvature is increased gradually by head 202 to root 201.Particularly, the variation of this curvature is, as shown in Figure 2, while launching the first scissor body 11 and the second scissor body 12 the shear blade of the right and left 2 is opened to specified width, which width, the crosspoint that the shearing blade of the right and left 21 is intersected and the distance between pivot are made as Z, the crosspoint that the shearing blade 21 that connects described the right and left is intersected and the connecting line of pivot are set as rotating datum line X, by the pivot from described scissors till the distance of the fixed point D the shearing blade of the right and left is set as r mm, the fixed point D of shearing blade 21 on described connection one side and the mutual angulation of the connecting line of pivot are made as to θ, the angle that the shearing blade of the described left and right sides 21 is formed between the tangent line at described fixed point D place is made as Y, represent that the equation on the polar coordinates of described shearing blade 21 shapes meets following formula:
r
2=2a
2cos(2θ），
Wherein, a is the constant that can set arbitrarily according to the big or small length of scissors, and when θ be 30 while spending, the value of r equals a.
So, by the distance r till the fixed point D of 21 appointment from pivot to shearing blade, to connect connecting line and the crossing angle θ of rotation datum line X of fixed point D and pivot, and when θ be 30 while spending, the value of r equals a, the position that just shearing blade 21 of the shearing blade of the first scissor body 11 21 and the second scissor body 12 can be intersected is consistent, even revolving scissors sheet 2, the crossover location that makes two shear blades 2 is the distance to head 212 by root 201, all the intersecting angle θ of two shearing blades 21 can be remained on to certain angle.In other words, as shown in Figure 2, no matter how the degree of opening of the shear blade 2 of the first scissor body 11 and the shear blade 2 of the second scissor body 12 changes, the shearing blade 21 of the first scissor body 11 all can remain on certain angle with the angle θ that the shearing blade 21 of the second scissor body 12 intersects.
Meanwhile, by connect connecting line and the crossing angle θ of rotation datum line X of fixed point D and pivot, be set in 0 to 44 degree scope better, it is comparatively conventional to 150mm scope that another a is set in 60mm.
In conjunction with as shown in Figure 2, described angle Y is made as π/5(rad again)-π/7(rad), preferred, described angle Y is made as π/6(rad).When two shearing blades 21 are intersected, the intersecting angle Y shape of setting two shearing blades 21 becomes π/6rad degree, while now utilizing shear blade 2 to shear cutting object, can shear easily.In other words, when the utility model is sheared cutting object, by two shearing blade 21 combined shears and the effect of cutting off, cutting object is sheared, when the intersecting angle of left and right two shearing blades 21 less, the probability of cutting off is higher, and the intersecting angle of shearing blade 21 is larger, and the ratio of shearing uprises.And when the angle of two shearing blades 20 is at π/6(rad) during degree left and right, shear and cut off between effect ratio substantially equal, the cutting objects such as cloth can not released to head 202 directions of shear blade 2 in shear history, the coarse groove that adds shearing blade 21 making can be bitten cutting object, can little strength shear easily, carry out the action of folding scissors, can shear easily cutting object.
In addition, in above-mentioned enforcement, the first scissor body 11 and the second scissor body 12 is rotating in aggregates by group by the screw as connecting elements 114, but as connecting elements 114, can also use as suitable fixation kits such as rivets, as long as can be by the first scissor body 11 and the mutual rotating combination that is connected of the second scissor body 12.
In sum, when the utility model is used, owing to thering is a curve arc shearing blade in shear blade, make no matter user is the scissors of opening of larger limit, still more by a small margin open scissors, the angle of two shear blade all can keep best angle, this shearing blade is from the root that approaches scissors shaft to head, all can to cutting object, shear easily, very convenient to use.Because the equation on the polar coordinates of curve arc shearing blade meets following formula: r
2=2a
2cos (2 θ), because a is constant, so can adjust numerical value with different crowd, designs the scissors of different big or small length, supplies different crowd with one hand scissors easy to use.
Certainly, the foregoing is only specific embodiment of the utility model, be not to limit the utility model practical range, all according to equivalence variation or modification that described in the utility model claim, structure, feature and principle are done, all should be included in the utility model claim.
Claims (3)
1. modified form scissors, is characterized in that:
In the shape of the curve arc shearing blade of this scissors,
Opening under the state of this scissors, the crosspoint that the shearing blade of the right and left is intersected and the distance between pivot are made as Z,
The crosspoint that the shearing blade that connects described the right and left is intersected and the connecting line of pivot are set as rotating datum line X,
By the pivot from described scissors till the distance of the fixed point D the shearing blade of the right and left is set as r mm,
The fixed point D of shearing blade on described connection one side and the mutual angulation of the connecting line of pivot are made as to θ,
The angle that the shearing blade of the described left and right sides is formed between the tangent line at described fixed point D place is made as Y, represents satisfied following formula: the r of equation on the polar coordinates of described shearing blade shape
2=2a
2cos (2 θ), wherein, a is the constant that can set arbitrarily according to the big or small length of scissors, and when θ be 30 while spending, the value of r equals a.
2. modified form scissors according to claim 1, is characterized in that: described angle Y is made as π/5(rad)-π/7(rad).
3. modified form scissors according to claim 1 and 2, is characterized in that: the value of described angle theta is 0 °-44 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320705569.9U CN203527492U (en) | 2013-11-08 | 2013-11-08 | Improved scissors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320705569.9U CN203527492U (en) | 2013-11-08 | 2013-11-08 | Improved scissors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203527492U true CN203527492U (en) | 2014-04-09 |
Family
ID=50413752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320705569.9U Expired - Lifetime CN203527492U (en) | 2013-11-08 | 2013-11-08 | Improved scissors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203527492U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015143584A1 (en) * | 2014-03-24 | 2015-10-01 | 谢培树 | Constant-angle scissors |
| CN106926287A (en) * | 2017-04-06 | 2017-07-07 | 张家港市前进五金制品有限公司 | Scissor blade and the straight snips and tooth that are made using the scissor blade are cut |
| CN108284458A (en) * | 2018-02-07 | 2018-07-17 | 东莞市港荣五金制品有限公司 | A kind of design method of scissors and scissors blades |
| WO2019056398A1 (en) * | 2017-09-20 | 2019-03-28 | 张家港海霸工具有限公司 | Hair scissors |
-
2013
- 2013-11-08 CN CN201320705569.9U patent/CN203527492U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015143584A1 (en) * | 2014-03-24 | 2015-10-01 | 谢培树 | Constant-angle scissors |
| CN106926287A (en) * | 2017-04-06 | 2017-07-07 | 张家港市前进五金制品有限公司 | Scissor blade and the straight snips and tooth that are made using the scissor blade are cut |
| WO2019056398A1 (en) * | 2017-09-20 | 2019-03-28 | 张家港海霸工具有限公司 | Hair scissors |
| CN108284458A (en) * | 2018-02-07 | 2018-07-17 | 东莞市港荣五金制品有限公司 | A kind of design method of scissors and scissors blades |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180601 Address after: 523000 No. 335, Ya Di Nan Road, Shan Shan village, Qiaotou, Dongguan, Guangdong Patentee after: DONGGUAN GANGRONG HARDWARE CO.,LTD. Address before: 518000 Guangdong Shenzhen Nanshan District Xinghai city 6 phase four four 6C Patentee before: Xu Jingbo |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |