Scissors convenient to use

Abstract

The scissors convenient to use comprise a first blade assembly, a second blade assembly and a limiting mechanism, the limiting mechanism can limit the included angle between the first blade assembly and the second blade assembly to rotate within the range of a natural unfolding state and a complete folding state, the first blade assembly is provided with a first magnet, and the second blade assembly is provided with a second magnet. The second blade assembly is provided with a second magnet, and the first magnet and the second magnet are arranged in a homopolar opposite mode in the completely closed state so as to drive the first blade assembly and the second blade assembly to recover to the natural unfolding state; the special-shaped magnets are matched with the special-shaped counter bores, the magnets are fixed to the metal shear pieces by means of the adsorption capacity of the magnets, and the magnets are limited in the counter bores to fall off by means of partial overlapping of the shear pieces. The magnet can be fixed without additional structural features or processes such as welding and gluing, the structure is simple, and the cost is saved.

Description

Technical Field

[0001] This patent relates to the field of daily life, and particularly to a pair of scissors that is convenient to use. Background Art

[0002] Scissors generally consist of a rotor part, a stator part, and a rivet. Among them, the rotor part is composed of a rotor blade ("rotating blade") and a rotor handle ("rotating handle"), and the stator part is composed of a stator blade ("fixed blade") and a stator handle ("fixed handle").

[0003] The principle of action of magnetic scissors lies in the extended version of Coulomb's law: "The repulsive force between magnets (abbreviated as'repulsive force') F = k * (m1 * m2) / r 2 (where k is a constant, m1 and m2 are the magnetic pole strengths of the two magnets respectively, and r is the distance between the magnets (abbreviated as 'distance')). It can be seen that the repulsive force is proportional to the magnetic pole strength and inversely proportional to the square of the distance; the square of the distance is proportional to the magnetic pole strength. According to geometric common sense, the distance is positively correlated with the opening angle of the scissors (abbreviated as 'angle'). When the scissors are constrained to the closed state, the distance is the smallest and the repulsive force reaches the maximum value ('maximum repulsive force'); when the restraint is released, the scissors gradually open, the distance increases accordingly, and the repulsive force decreases significantly until the resultant force with the gravity of the rotor part is zero, and the scissors reach the maximum opening angle. At this time, the repulsive force can be called the minimum repulsive force. And the larger the opening angle of the scissors, the smaller the displacement of the cutting point away from the rivet, and the larger the shear moment. Therefore, for a larger shear moment, a larger angle is required.

[0004] For the magnetic scissors whose patented technology has been disclosed, since the magnets are placed at the rear section of the handle, if a sufficiently large angle is to be obtained, a sufficiently large distance is required. Without reducing the repulsive force (the gravity of the rotating handle remains unchanged), a significant increase in the magnetic pole strength is required, which will bring two problems: 1. A significant increase in the volume of the magnets or the use of permanent magnetic materials with extremely high magnetic induction intensity is required, both of which will result in a huge increase in cost; 2. In addition to the minimum repulsive force, the maximum repulsive force will increase significantly due to the significant increase in the magnetic pole strength. And the greater the repulsive force, the more laborious it is to operate, and the greater the change range of the repulsive force, the worse the user experience. Summary of the Utility Model

[0005] In order to improve the convenience and safety of using scissors, this patent provides the following technical solutions:

[0006] Provided is a convenient-to-use scissor, including a first blade assembly, a second blade assembly and a limiting mechanism. The first blade assembly has a first magnet and a first magnetic attraction portion. The second blade assembly has a second magnet and a second magnetic attraction portion. The first magnet is embedded in the first magnetic attraction portion, and the second magnet is embedded in the second magnetic attraction portion. The first magnet and the second magnet are arranged with the same poles facing each other. The limiting mechanism includes a special-shaped rivet. The distance d from the center point P of the special-shaped rivet to the center point of the magnet accounts for 0.1-0.3 of the length of the scissor blade portion. Specifically, it can be 0.1-0.15, 0.15-0.2, 0.2, 0.2-0.25, 0.25-0.3.

[0007] Further, the first blade assembly further includes a first magnetic attraction portion. The first magnetic attraction portion includes a first magnetic attraction front end hole, a first magnetic attraction surrounding portion, and a first magnetic attraction end hole. The second blade assembly further includes a second magnetic attraction portion. The second magnetic attraction portion includes a second magnetic attraction front end hole, a second magnetic attraction surrounding portion, and a second magnetic attraction end hole.

[0008] Further, the first magnet includes a first magnet front end face, a first magnet front surrounding portion, a first magnet rear surrounding portion, and a first magnet rear end face. The second magnet includes a second magnet front end face, a second magnet front surrounding portion, a second magnet rear surrounding portion, and a second magnet rear end face.

[0009] Further, the first magnetic attraction portion is frustum-shaped. The diameter of the first magnetic attraction front end hole is larger than the diameter of the first magnetic attraction end hole. The first magnet front surrounding portion matches the first magnetic attraction portion. The first magnet rear surrounding portion is cylindrical. When the first magnet rear surrounding portion passes through the first magnetic attraction end hole, the first magnet front surrounding portion fits with the first magnetic attraction portion.

[0010] Further, the first magnet is arranged on the first blade assembly at a position closer to and / or farther from the first handle relative to the limiting mechanism. The second magnet is arranged on the second blade assembly at a position closer to and / or farther from the second handle relative to the limiting mechanism.

[0011] Further, the first blade assembly further includes a first blade, a first blade portion, a first extension portion, a first connection portion, a first handle, a third magnet, and a third magnetic attraction portion. The second blade assembly further includes a second blade, a second blade portion, a second extension portion, a second connection portion, a second handle, a fourth magnet, and a fourth magnetic attraction portion.

[0012] Further, the limiting mechanism can limit the included angle between the first blade assembly and the second blade assembly to rotate within the included angle range between the fully unfolded state and the fully closed state. In the fully unfolded state, the included angle between the first blade assembly and the second blade assembly is the maximum rotation angle β; in the fully closed state, the included angle between the first blade assembly and the second blade assembly is 0°; the maximum rotation angle β is 30° - 45°, 45° - 60° or 60° - 75°, specifically, it can be 30° - 35°, 35° - 40°, 40° - 45°, 45° - 50°, 55° - 60°, 60° - 65°, 65° - 70°, 70° - 75°.

[0013] Further, the limiting mechanism further includes a special-shaped hole and a fixing hole. The fixing hole is arranged on the first blade assembly, and the special-shaped hole is arranged on the second blade assembly. The special-shaped rivet sequentially passes through the special-shaped hole and the fixing hole and is riveted to the fixing hole; the shape of the fixing hole is runway-shaped; the special-shaped hole is a string-shaped hole with a certain inclination angle, that is, a hole with a concave middle and arc-shaped ends.

[0014] Further, the special-shaped hole includes a first stop portion, a second stop portion, a first guiding portion, a third stop portion, a fourth stop portion and a second guiding portion. The first stop portion, the second stop portion, the third stop portion and the fourth stop portion are line segments, and the first guiding portion and the second guiding portion are arcs.

[0015] Further, the special-shaped rivet includes a nail column and a nail head. The cross-section of the nail column is similar to the shape of the fixing hole; the special-shaped hole rotates around the nail column of the special-shaped rivet; the nail column includes a first side surface, a second side surface, a third side surface and a fourth side surface. The second side surface and the fourth side surface are cylindrical surfaces, and the first side surface and the third side surface are flat surfaces.

[0016] This patent has the following beneficial effects:

[0017] 1. By limiting the distance between the center point P of the special-shaped rivet and the center point of the magnet, this patent can obtain a larger opening angle and a larger scissor torque. On the premise of ensuring that the maximum opening angle remains unchanged, the requirement for the distance of the magnet is greatly reduced, so that only a conventional magnetic pole strength can be used to drive the scissors. And because the change range of the distance of the magnet is reduced, the change range of the repulsive force is reduced, thus improving the use experience.

[0018] 2. This patent sets a limiting mechanism, which can prevent the opening angle from being too large due to magnetic force drive and avoid the blade from scratching the hand outward; and magnets are arranged around the limiting mechanism. In the case of axial fixation, the magnets with the same poles facing each other will generate a stable repulsive force, making the user's holding experience of the scissors stable and comfortable in both the fully unfolded state and the fully closed state.

[0019] 3. In this patent, a special-shaped magnet is paired with a special-shaped counterbore, and by utilizing the adsorption ability of the magnet itself, the magnet is fixed on the metal cutting blade. And relying on the partial overlap of the cutting blades, the magnet is restricted within the counterbore and cannot fall off. There is no need for additional structural features or processes such as welding or gluing to fix the magnet, with a simple structure and cost savings.

[0020] 4. By providing driving force with the magnet, it can avoid excessive fatigue of the thumb, be more ergonomic, and compared with the opening method relying on the gravity moment, it can be used in any direction without being affected by the relationship between the scissors and the gravity direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of this patent, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of this patent, so it should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0022] Figure 1 is the exploded view of the assembly structure of the first embodiment;

[0023] Figure 2 is the partial schematic view of the scissors in the fully closed state of the first embodiment;

[0024] Figure 3 is the partial schematic view of the scissors in the natural unfolded state of the first embodiment;

[0025] Figure 4 is the schematic view of the shape of the fixing hole of the first embodiment;

[0026] Figure 5 is the three-dimensional schematic view of the special-shaped rivet of the first embodiment;

[0027] Figure 6 is the cross-sectional view of the column of the special-shaped rivet of the first embodiment;

[0028] Figure 7 is the schematic view of the shape of the special-shaped hole of the first embodiment;

[0029] Figure 8 is the assembly schematic view of the column of the special-shaped rivet and the special-shaped hole in the fully closed state of the scissors of the first embodiment;

[0030] Figure 9 is the assembly schematic view of the column of the special-shaped rivet and the special-shaped hole in the natural unfolded state of the scissors of the first embodiment;

[0031] Figure 10 is the exploded view of the assembly structure of the second embodiment;

[0032] Figure 11Schematic diagram of partial assembly of the second embodiment;

[0033] Figure 12 Schematic diagram of the second embodiment in the natural unfolded state of the scissors;

[0034] Figure 13 Schematic diagram of the magnet positions in the natural unfolded state of the scissors of the second embodiment;

[0035] Figure 14 Schematic diagram of the magnet positions in the fully closed state of the scissors of the second embodiment;

[0036] Figure 15 Schematic cross - sectional view of the magnet positions in the fully closed state of the scissors of the second embodiment;

[0037] Figure 16 Cross - sectional view of the first magnetic attraction part in the second embodiment;

[0038] Figure 17 Cross - sectional view of the first magnet in the second embodiment;

[0039] Figure 18 Schematic diagram of the scissors in the natural unfolded state of the third embodiment;

[0040] Figure 19 Schematic diagram of the scissors in the natural unfolded state of the fourth embodiment.

[0041] Among them, the reference numerals are explained as follows:

[0042] Scissors: 1, 2, 3, 4

[0043] First blade assembly: 11, 21, 31, 41

[0044] First blade: 111

[0045] First cutting edge: 112

[0046] First extension part: 115

[0047] First connecting part: 116

[0048] First handle: 117

[0049] Second blade assembly: 12, 22, 32, 42

[0050] Second blade: 121

[0051] Second cutting edge: 122

[0052] Second extension part: 125

[0053] Second connecting part: 126

[0054] Second handle: 127

[0055] Limit mechanism: 13

[0056] Special-shaped rivet: 131

[0057] First side: 1311

[0058] Second side: 1312

[0059] Third side: 1313

[0060] Fourth side: 1314

[0061] Special-shaped rivet column: 1318

[0062] Special-shaped rivet head: 1319

[0063] Special-shaped hole: 132

[0064] First stop portion: 1321

[0065] Second stop portion: 1322

[0066] First guiding portion: 1323

[0067] Third stop portion: 1324

[0068] Fourth stop portion: 1325

[0069] Second guiding portion: 1326

[0070] Fixing hole: 133

[0071] First magnetic attraction portion: 213, 313, 413

[0072] First magnetic attraction front-end hole: 2131

[0073] First magnetic attraction enclosing portion: 2132

[0074] First magnetic attraction end hole: 2133

[0075] First magnet: 214, 314, 414

[0076] First magnet front-end face: 2141

[0077] First magnet front enclosing portion: 2142

[0078] First magnet rear enclosing portion: 2143

[0079] First magnet rear-end face: 2144

[0080] Second magnetic attraction portion: 223, 323, 423

[0081] Second magnet: 224, 324, 424

[0082] Front end face of the second magnet: 2241

[0083] Front enclosing part of the second magnet: 2242

[0084] Rear enclosing part of the second magnet: 2143

[0085] Rear end face of the second magnet: 2244

[0086] Third magnetic attraction part: 418

[0087] Third magnet: 419

[0088] Fourth magnetic attraction part: 428

[0089] Fourth magnet: 429 Specific embodiments

[0090] The detailed features and advantages of this patent will be described in detail in the following specific embodiments. The content is sufficient for any person skilled in the art to understand the technical content of this patent and implement it accordingly. And according to the specification, claims and drawings disclosed in this specification, those skilled in the art can easily understand the related purposes and advantages of this patent.

[0091] To make the purposes, technical solutions and advantages of this patent clearer, the following will further describe the embodiments of this patent in detail with reference to the accompanying drawings.

[0092] Embodiment 1

[0093] As Figure 1 shown, the scissors 1 shown in this embodiment includes a first blade assembly 11, a second blade assembly 12 and a limiting mechanism 13. The limiting mechanism 13 connects the first blade assembly 11 and the second blade assembly 12 and can limit the rotation angle between the first blade assembly 11 and the second blade assembly 12 in the natural unfolded state and the fully closed state within a preset range.

[0094] The first blade assembly 11 includes a first blade 111, a first cutting edge 112, a first extension 115, a first connecting portion 116, and a first handle 117. The first cutting edge 112 is located at the side end of the first blade 111. One side of the first cutting edge 112 facing the second blade 121 forms a cutting surface, and the surface of the first cutting edge 112 abutting against the second blade 121 is a flat surface. The first extension 115 and the first connecting portion 116 are located at the intersection of the first blade 111 and the first handle 117. The front end of the first blade 111 is the sharp and pointed first cutting edge 112, and the end is a long strip arc-shaped handle portion. In the middle of the front end inside the first handle 117, there is a card slot for accommodating the long strip arc-shaped handle portion at the end of the first blade 111. The first extension 115 is located at the outer end of the first blade 111, and the first connecting portion 116 is located at the inner end of the first blade 111. The first extension 115 can be sleeved with the first handle 117 made of non-metallic materials such as rubber and plastic. The first handle 117 has a finger ring through which the little finger to the index finger can pass and hold.

[0095] The second blade assembly 12 includes a second blade 121, a second cutting edge 122, a second extension 125, a second connecting portion 126, and a second handle 127. The second cutting edge 122 is located at the side end of the second blade 121. One side of the second cutting edge 122 facing the first blade 111 forms a cutting surface, and the surface of the second cutting edge 122 abutting against the first blade 111 is a flat surface. The second extension 125 and the second connecting portion 126 are located at the intersection of the second blade 121 and the second handle 127. The front end of the second blade 121 is the sharp and pointed second cutting edge 122, and the end is a long strip arc-shaped handle portion. In the middle of the front end inside the second handle 127, there is a card slot for accommodating the long strip arc-shaped handle portion at the end of the second blade 121, that is, the top of the second cutting edge 122 of the second blade 121 is inserted into the groove of the second handle 127 and fixed. The second extension 125 is located at the outer end of the second blade 121, and the second connecting portion 126 is located at the inner end of the second blade 121. The second extension 125 can be sleeved with a second handle 127 made of a different material. The second handle 127 is a streamline open handle designed according to ergonomics for pressing and operating by the thumb or the root of the thumb.

[0096] Such as Figure 2 And Figure 3As shown, when the scissors need to change from the natural unfolded state to the fully closed state, a force is applied to the second handle 127 of the scissors 1 in the direction of the first handle 117, causing the second handle 127 to move closer to the first handle 117. The distance between the first connecting portion 116 and the second connecting portion 126 decreases, that is, the opening angle β of the scissors 1 becomes smaller. Until the first blade portion 112 and the second blade portion 122 coincide and move downward during the movement. The surface of the first blade portion 112 abutting against the second blade 121 becomes a plane, and the surface of the second blade portion 122 abutting against the first blade 111 becomes a plane. The special-shaped hole 132 rotates around the special-shaped rivet 131 and approaches the first blade portion 112. At this time, the scissors 1 change from the natural unfolded state to the fully closed state. When the scissors need to change from the fully closed state to the natural unfolded state, after the force applied to the second handle 127 of the scissors 1 in the direction of the first handle 117 is withdrawn, rely on the gravity moment or apply a reverse force. At this time, the second handle 127 moves away from the first handle 117. The distance between the first connecting portion 116 and the second connecting portion 126 increases, that is, the opening angle of the scissors 1 becomes larger. Until the surface of the first blade portion 112 abutting against the second blade 121 becomes a plane and the surface of the second blade portion 122 abutting against the first blade 111 becomes a plane moves to the first blade portion 112 and the second blade portion 122 coincide and move upward during the movement. The special-shaped hole 132 rotates around the special-shaped rivet 131 and moves away from the first blade portion 112. At this time, the scissors 1 are restored from the fully closed state to the natural unfolded state.

[0097] The limiting mechanism 13 includes a special-shaped rivet 131, a special-shaped hole 132 and a fixing hole 133.

[0098] As Figure 4 shown, the shape of the fixing hole 133 is in the shape of a runway.

[0099] As Figure 5 and Figure 6 shown, the special-shaped rivet 131 includes a nail column 1318 and a nail head 1319. The nail column 1318 includes a first side surface 1311, a second side surface 1312, a third side surface 1313 and a fourth side surface 1314. From the cross-section of the nail column 1318, the first side surface 1311 and the third side surface 1313 are straight line segments, and the second side surface 1312 and the fourth side surface 1314 are arcs, so that the cross-section of the nail column 1318 is approximately in the shape of a runway. The fixing hole 133 is a rectangular columnar structure approximately elliptical matching the special-shaped rivet 131, which coincides with the runway shape of the fixing hole 133 so as to pass through the fixing hole 133.

[0100] In this embodiment, the special-shaped rivet 131 has a rectangular columnar structure, specifically including a special-shaped rivet head 1319 and a special-shaped rivet column 1318. The rivet column 1318 passes through the connecting special-shaped hole 132 and the fixing hole 133 in sequence and is deformed and riveted, so that the rivet head 1319 abuts against the outside of the second blade 121, and the end of the rivet column 1318 coincides with the outside of the first blade 111.

[0101] As Figure 7 shown, the special-shaped hole 132 is a string shape with a certain inclination angle, that is, a hole with a concave middle and arc-shaped ends. The special-shaped hole 132 includes a first stop portion 1321, a second stop portion 1322, a first guiding portion 1323, a third stop portion 1324, a fourth stop portion 1325 and a second guiding portion 1325. The first stop portion 1321, the second stop portion 1322, the third stop portion 1324 and the fourth stop portion 1325 are straight line segments, which are used to stop the rotation of the rivet column 1318 so as to limit the rotation angle range. The first guiding portion 1323 and the second guiding portion 1325 are arcs, which are used to guide the relative rotation of the rivet column 1318. The extension line of the straight line where the first stop portion 1321 and the fourth stop portion 1325 are located intersects at point O and has an included angle β. The relative rotation angle range of the rivet column 1318 and the rivet column 1318, that is, the relative rotation angle range of the first blade assembly 11 and the second blade assembly 12 is 0 to β, and the included angle β is preferably 30 to 75°, and more preferably 45 to 60°.

[0102] Specifically, as Figure 8 、 9 shown, the rivet column 1318 penetrates the special-shaped hole 132. When the scissors 1 are in the natural unfolded state or the fully closed state, the special-shaped hole 132 rotates around the rivet column 131. Specifically, the central axes of the special-shaped hole 132, the rivet column 1318, and the fixing hole 133 completely coincide, and the center is represented by point P. After the rivet column 1318 penetrates the special-shaped hole 132, when the scissors 11 are in the natural unfolded state or the fully closed state, in fact, the special-shaped hole 132 and the rivet column 1318 rotate relatively. When the scissors 1 are in the fully closed state, the first stop portion 1321 abuts against the first side surface 1311, and the third stop portion 1324 abuts against the third side surface 1313, so as to be limited; when the scissors 1 are transformed from the fully closed state to the natural unfolded state, the special-shaped hole 132 rotates counterclockwise around the special-shaped rivet 131 with point P as the center. At this time, the first stop portion 1321 moves away from the first side surface 1311, and the fourth stop portion 1324 moves away from the third side surface 1313, and the relative rotation angle changes within the range of 0 to β; when the scissors 1 are in the natural unfolded state, the fourth stop portion 1325 abuts against the second side surface 1312, and the second stop portion 1322 abuts against the first side surface 1311, so as to be limited.

[0103] Embodiment 2

[0104] As shown Figures 10 - 14 in the figure, the scissors 2 shown in this embodiment include a first blade assembly 21, a second blade assembly 22 and a limiting mechanism. The limiting mechanism can limit the included angle between the first blade assembly 21 and the second blade assembly 22 to rotate within the range of the natural unfolded state and the fully closed state. The first blade assembly 21 has a first magnet 214, and the second blade assembly 22 has a second magnet 224. When in the fully closed state, the first magnet 214 and the second magnet 224 are arranged with the same poles facing each other to drive the first blade assembly 21 and the second blade assembly 22 to return to the natural unfolded state. The distance d from the center point P of the special-shaped rivet to the center point of the magnet accounts for 0.2 of the length of the scissor blade part.

[0105] The first blade assembly 21 includes a first blade, a first blade part, a first magnetic attraction part 213, a first magnet 214, a first extension part, a first connection part and a first handle. The first blade part is located at the side end of the first blade. One side of the first blade part facing the second blade forms a blade surface, and the surface of the first blade part abutting against the second blade is a flat surface. The first extension part and the first connection part are located at the intersection of the first blade and the first handle. The front end of the first blade is a sharp and pointed first blade part, and the end is a long strip arc-shaped handle part. In the middle of the front end inside the first handle, there is a card slot for accommodating the long strip arc-shaped handle part at the end of the first blade. The first extension part is located at the outer end of the first blade, and the first connection part is located at the inner end of the first blade. The first extension part can be sleeved with non-metallic materials such as rubber and plastic. The first handle has a finger ring for fingers to pass through and hold. The first magnetic attraction part 213 is arranged between the fixing hole and the first handle. The first handle has a finger ring for the little finger to the index finger to pass through and hold.

[0106] The second blade assembly 22 includes a second blade, a second blade part, a second magnetic attraction part 223, a second magnet 224, a second extension part, a second connection part and a second handle. The second blade part is located at the side end of the second blade. One side of the second blade part facing the first blade forms a blade surface, and the surface of the second blade part abutting against the first blade is a flat surface. The second extension part and the second connection part are located at the intersection of the second blade and the second handle. The front end of the second blade is a sharp and pointed second blade part, and the end is a long strip arc-shaped handle part. In the middle of the front end inside the second handle, there is a card slot for accommodating the long strip arc-shaped handle part at the end of the second blade, that is, the top of the second blade part of the second blade is inserted into the groove of the second handle and fixed. The second extension part is located at the outer end of the second blade, and the second connection part is located at the inner end of the second blade. The second extension part can be sleeved with a second handle made of non-metallic materials such as rubber and plastic. The second handle is a streamline open handle designed according to ergonomics for the thumb or the root of the thumb to press and operate. The second magnetic attraction part 223 is arranged between the special-shaped hole and the second handle. In this embodiment, the limiting mechanism is the same as that in Embodiment 1.

[0107] As Figures 15 - 17As shown, the first magnetic attraction part 213 and the second magnetic attraction part 223 have the same structure and are respectively used to attract the first magnet 214 and the second magnet 224. The first magnetic attraction part 213 includes a first magnetic attraction front end hole 2131, a first magnetic attraction enclosing part 2132, and a first magnetic attraction end hole 2133. The cross-section of the first magnetic attraction part 213 is frustum-shaped. The first magnetic attraction enclosing part 2132 is a surface with a gradually decreasing diameter. The diameter of the first magnetic attraction front end hole 2131 is larger than that of the first magnetic attraction end hole 2133. The first magnetic attraction front end hole 2131 faces the second blade 121, and the first magnetic attraction end hole 2133 faces the outside. The first magnet 214 is an axisymmetric structure and includes a first magnet front end face 2141, a first magnet front enclosing part 2142, a first magnet rear enclosing part 2143, and a first magnet rear end face 2144. The first magnet front end face 2141 is larger than the first magnet rear end face 2144. The first magnet front enclosing part 2142 is slightly larger than the first magnet rear enclosing part 2143, so that the first magnet rear end face 2144 and the first magnet rear enclosing part 2143 pass through the first magnetic attraction end hole 2133 and are fixed by the first magnetic attraction end hole 2133 at the intersection of the first magnet rear enclosing part 2143 and the first magnet front enclosing part 2142. At this time, the first magnetic attraction enclosing part 2132 is on the first magnet front enclosing part 2142 and the first magnetic attraction front end hole 2131 and the first magnet front end face 2141 are on the same horizontal plane.

[0108] The first magnet 214 and the second magnet 224 are of the same type. It is easy to understand that when the first magnet 214 approaches the second magnet 224, the two magnets will repel and move away from each other, thereby providing a driving force for the scissors to change to the natural unfolding state.

[0109] Apply a force to the second handle of the scissors 2 in the direction of the first handle, so that the second handle moves in the direction close to the first handle. The distance between the first connecting part and the second connecting part decreases, that is, the opening angle of the scissors 2 becomes smaller until the scissors 2 change from the natural unfolding state to the fully closed state.

[0110] If the force applied to the second handle of the scissors 2 in the direction of the first handle is withdrawn at this time, the two relatively arranged first magnets 214 and second magnets 224 have a repulsive force. Under the action of the repulsive force, the second handle moves in the direction away from the first handle. The distance between the first connecting part and the second connecting part increases, that is, the opening angle of the scissors 2 becomes larger until the scissors 2 automatically return from the fully closed state to the natural unfolding state.

[0111] Embodiment 3

[0112] As Figure 18As shown, the scissors 3 include a first blade assembly 31, a second blade assembly 32, and a limiting mechanism. The first blade assembly 31 includes a first blade, a first cutting edge, a first magnetic attraction portion 313, a first magnet 314, a first extension portion, a first connection portion, and a first handle; the second blade assembly 32 includes a second blade, a second cutting edge, a second magnetic attraction portion 323, a second magnet 324, a second extension portion, a second connection portion, and a second handle.

[0113] The difference between this embodiment and Embodiment 2 is that the positions of the first magnetic attraction portion 313 and the first magnet 314 on the first blade assembly 31 are adjusted, and the first magnetic attraction portion 313 and the first magnet 314 are arranged in front of the fixing hole; and the positions of the second magnetic attraction portion 323 and the second magnet 324 on the second blade assembly 32 are adjusted, and the second magnetic attraction portion 323 and the second magnet 324 are arranged in front of the special-shaped hole. At this time, a larger setting space can provide a greater moment.

[0114] Embodiment 4

[0115] As Figure 19 As shown, the scissors 4 include a first blade assembly 41, a second blade assembly 42, and a limiting mechanism. The first blade assembly 41 includes a first blade, a first cutting edge, a first magnetic attraction portion 413, a first magnet 414, a first extension portion, a first connection portion, a first handle, a third magnetic attraction portion 418, and a third magnet 419; the second blade assembly 42 includes a second blade, a second cutting edge, a second magnetic attraction portion 423, a second magnet 424, a second extension portion, a second connection portion, a second handle, a fourth magnetic attraction portion 428, and a fourth magnet 429.

[0116] The difference between this embodiment and Embodiment 2 is that a third magnetic attraction portion 418, a third magnet 419, a fourth magnetic attraction portion 428, and a fourth magnet 429 are newly added. The first magnetic attraction portion 413 and the first magnet 414, the third magnetic attraction portion 418 and the third magnet 419 are arranged on both sides of the fixing hole of the first blade assembly 41, and the second magnetic attraction portion 423 and the second magnet 424, the fourth magnetic attraction portion 428 and the fourth magnet 429 are arranged on both sides of the special-shaped hole of the second blade assembly 42. Such an arrangement can provide a greater moment.

[0117] In the specification, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and components. However, these terms are used only for convenience of description and are determined based on the example orientations shown in the drawings. Since the disclosed embodiments can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity.

[0118] In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, various possible combination methods will not be described separately.

[0119] In addition, any combination can also be made between various different embodiments as long as it does not violate the idea, and it should also be regarded as the disclosed content.

Claims

1. A pair of scissors that are easy to use, characterized in that: The invention comprises a first blade assembly, a second blade assembly and a limiting mechanism, wherein the first blade assembly comprises a first magnet and a first magnetic attraction portion, the second blade assembly comprises a second magnet and a second magnetic attraction portion, the first magnet is embedded in the first magnetic attraction portion, the second magnet is embedded in the second magnetic attraction portion, and the first magnet and the second magnet are arranged opposite to each other with the same poles; The limiting mechanism comprises a special-shaped rivet, and the distance between the center point P of the special-shaped rivet and the center point of the magnet is d, and the distance d accounts for 0.1 to 0.3 of the length of the scissors blade.

2. The scissors according to claim 1, characterized in that: The first blade assembly further includes a first magnetic attraction portion, which includes a first magnetic attraction front end hole, a first magnetic attraction enclosing portion, and a first magnetic attraction end hole; The second blade assembly also includes a second magnetic attraction portion, which includes a second magnetic attraction front end hole, a second magnetic attraction enclosure portion, and a second magnetic attraction end hole.

3. The scissors according to claim 2, characterized in that: The first magnet comprises a first magnet front end surface, a first magnet front enclosure, a first magnet rear enclosure, and a first magnet rear end surface; The second magnet includes a second magnet front end surface, a second magnet front enclosure portion, a second magnet rear enclosure portion, and a second magnet rear end surface.

4. The scissors according to claim 3, characterized in that: The first magnetic attraction portion is in the shape of a truncated cone, the diameter of the first magnetic front end hole is larger than the diameter of the first magnetic end hole, the first magnet front enclosure portion matches the first magnetic attraction portion, and the first magnet rear enclosure portion is cylindrical. When the first magnet rear enclosure portion passes through the first magnetic end hole, the first magnet front enclosure portion fits with the first magnetic attraction portion.

5. The scissors according to claim 1, characterized in that: The first magnet is arranged on the first blade assembly at a position closer to and / or farther from the first handle relative to the limiting mechanism; the second magnet is arranged on the second blade assembly at a position closer to and / or farther from the second handle relative to the limiting mechanism.

6. The scissors according to claim 1, characterized in that: The first blade assembly also includes a first blade, a first cutting edge, a first extending portion, a first connecting portion, a first handle, a third magnet, and a third magnetic attraction portion; The second blade assembly also includes a second blade, a second cutting edge, a second extending portion, a second connecting portion, a second handle, a fourth magnet, and a fourth magnetic attraction portion.

7. The scissors according to claim 1, characterized in that: The limiting mechanism can limit the included angle of the first blade assembly and the second blade assembly to rotate within the included angle range of the fully extended state and the fully closed state. In the fully extended state, the included angle of the first blade assembly and the second blade assembly is the maximum rotation angle β; in the fully closed state, the included angle of the first blade assembly and the second blade assembly is 0°; The maximum rotation angle β is 30° to 45°, 45° to 60° or 60° to 75°.

8. The scissors according to claim 1, characterized in that: The limiting mechanism further comprises a special-shaped hole and a fixing hole, wherein the fixing hole is provided in the first blade assembly, the special-shaped hole is provided in the second blade assembly, and the special-shaped rivet passes through the special-shaped hole and the fixing hole in sequence and is riveted with the fixing hole; The fixing hole is in the shape of a racetrack; The special-shaped hole is a string-shaped hole with a certain inclination angle, that is, a hole that is concave in the middle and has arcs at both ends.

9. The scissors according to claim 8, characterized in that: The special-shaped hole includes a first stopper, a second stopper, a first guide, a third stopper, a fourth stopper and a second guide, the first stopper, the second stopper, the third stopper and the fourth stopper are line segments, and the first guideper and the second guideper are arcs.

10. The scissors according to claim 8, characterized in that: The special-shaped rivet comprises a nail column and a nail head, and the cross section of the nail column is similar in shape to the fixing hole; The special-shaped hole rotates around the nail column of the special-shaped rivet; The nail column includes a first side surface, a second side surface, a third side surface and a fourth side surface, the second side surface and the fourth side surface are cylindrical surfaces, and the first side surface and the third side surface are plane surfaces.

Images