Scissor folding and locking mechanism of chicken bone scissors

Abstract

The utility model discloses a scissors folding and locking mechanism of chicken bone scissors, the chicken bone scissors comprise two shearing units, the upper part of the front section of the blade handle part of the second shearing unit comprises a clamping groove with a backward opening, and the front end of the plastic handle of the first shearing unit comprises a slot with a downward opening; when the two shearing units are folded, the upper part of the front section of the handle part of the blade of the second shearing unit enters the slot; the front part of a plastic handle of the first shearing unit comprises a transverse flat long hole, the flat long hole penetrates through the slot, and a lock pin of a scissor folding and locking mechanism penetrates through the flat long hole; when the two shearing units are folded, the lock pin moves forwards in the long axis direction of the flat long hole and is clamped in the clamping groove. When the two shearing units are opened, the lock pin moves backwards in the long axis direction of the flat long hole and is separated from the clamping groove. According to the scissor folding locking mechanism of the chicken bone scissors, locking and unlocking after scissor folding can be conveniently achieved through one-hand operation, operation is easy and convenient, and user experience is good.

Description

[Technical Field]

[0001] This utility model relates to chicken bone shears, and more particularly to a scissor closing and locking mechanism for chicken bone shears. [Background Technology]

[0002] Chicken bone shears are a kitchen tool specifically designed for handling chicken bones. Often referred to as "kitchen shears," they feature a sturdy and durable design that allows for easy cutting of chicken bones and cutting of chicken meat. They can also trim excess fat or fascia, making them suitable for use in the kitchen.

[0003] Utility model patent CN202420636424.6 discloses a chicken bone scissors, including a right scissor handle and a left scissor handle. A detachable locking plate is locked in place in a groove on the right scissor handle by a detachable locking plate pin. A detachable locking plate spring connects the detachable locking plate to the groove. When the right and left scissor handles are used together as scissors, the locking plate limits the left scissor handle to prevent it from falling off the right scissor handle. Pressing the detachable locking plate releases the limitation on the left scissor handle, allowing the left scissor handle to be detached from the right scissor handle and used as a cutting knife. The side of the left scissor handle 11 that contacts the right scissor handle 1 is fixed with a locking buckle 17 that cooperates with the locking position on the right scissor handle 1 by a locking pin 8 and a locking spring 16. A push pin 7 is fixed on the locking buckle 17. The right and left scissor handles 1 and 11 can be unfolded by unlocking the latch 17 from the locking position on the right scissor handle 1 by moving the push pin 7, and the right and left scissor handles 1 and 11 can be locked together by engaging the latch 17 with the locking position on the right scissor handle 1 by moving the push pin 7. While the chicken bone scissors of this invention can be unlocked with one hand, locking requires two hands, making the process cumbersome and resulting in a poor user experience. [Summary of the Invention]

[0004] The technical problem to be solved by this utility model is to provide a scissor closing and locking mechanism for chicken bone scissors that can be easily operated with one hand when locking or unlocking.

[0005] To solve the above-mentioned technical problems, the present invention adopts a scissor closing and locking mechanism for chicken bone scissors. The chicken bone scissors include two cutting units, each including a blade and a plastic handle. The blade includes a cutting edge and a shank, with the rear end of the cutting edge connected to the front end of the shank. The connection between the cutting edge and the shank includes a hinge hole, and the shank is embedded in the plastic handle. A hinge shaft passes through the hinge holes of the two cutting units, achieving hinge between them. The opposing portions of the blades of the two cutting units each include a scissor blade, with the cutting edge of the first cutting unit's blade located below the cutting edge of the second cutting unit's blade. The hinge portion of the two cutting units includes a scissor spring-loaded opening mechanism and the aforementioned scissor closing and locking mechanism. The rear section of the shank of the second cutting unit's blade is embedded in the plastic handle. The upper part of the front section of the blade handle of the second shearing unit includes a rearward-opening slot for the scissor closing locking mechanism; the front end of the plastic handle of the first shearing unit includes a downward-opening slot, and when the two shearing units are closed, the upper part of the front section of the blade handle of the second shearing unit enters the slot; the front part of the plastic handle of the first shearing unit includes a transversely through flat elongated hole, which transversely passes through the slot; the scissor closing locking mechanism includes a locking pin, which passes through the flat elongated hole, and the handle of the first shearing unit blade includes a clearance hole for the locking pin; when the two shearing units are closed, the locking pin moves forward along the long axis of the flat elongated hole and is engaged in the slot in the upper part of the front section of the blade handle of the second shearing unit; when the two shearing units are opened, the locking pin moves backward along the long axis of the flat elongated hole and disengages from the slot in the upper part of the front section of the blade handle of the second shearing unit.

[0006] The scissor closing locking mechanism described above includes a rivet, a damping spring, and a spring washer. Each end of the elongated flat hole has an elongated annular groove. The spring washer sits on the bottom of one of the annular grooves. The rivet passes through the damping spring, the spring washer, and the elongated flat hole. Each end of the rivet has a rivet head. One end of the damping spring rests on the spring washer, and the other end rests on the bottom surface of one rivet head. The other rivet head sits on the bottom of another annular groove. When the plastic handle of the first shearing unit is horizontally arranged, the elongated flat hole is lower in the front and higher in the back.

[0007] The scissor closing and locking mechanism and the scissor spring opening mechanism described above include a torsion spring. The inner side of the shearing unit blade includes an annular mounting groove for the torsion spring. The annular mounting groove is coaxial with the hinge hole. The outer edge of the annular mounting groove includes an end foot groove for arranging the torsion arm of the torsion spring. The torsion spring is arranged in the annular mounting grooves of the two shearing unit blades. The two torsion arms of the torsion spring are respectively arranged in the end foot grooves of the two annular mounting grooves. The spring force of the torsion spring causes the two shearing units to open.

[0008] The scissors closing and locking mechanism described above has the blade handle riveted to the plastic handle by a plurality of rivets, and the top of the first cutting unit plastic handle and the bottom of the second cutting unit plastic handle are covered with a silicone layer.

[0009] The scissors closing and locking mechanism described above includes a sheath, which comprises a plastic sheath and a metal clip. The plastic sheath includes two side plates. At the opening at the rear of the plastic sheath, the rear of the first side plate includes an arc-shaped groove and a clearance groove at the front end of the plastic handle of the first cutting unit. The arc-shaped groove is located in front of the clearance groove, and the central angle corresponding to the arc-shaped groove is greater than 180°. When the cutting edges of the two cutting unit blades are inserted into the plastic sheath, the circular first rivet head at the end of the hinge shaft is engaged in the arc-shaped groove. The fixed end of the metal clip is fixed to the rear end of the second side plate of the plastic sheath by screws, and the opening direction of the metal clip is forward. The second side plate includes an elongated hole with its long axis arranged in the front-back direction. The elongated hole includes a concave beam arranged in the direction of the long axis. When the cutting edges of the two cutting unit blades are inserted into the plastic sheath, the concave beam abuts against the cutting edges of the cutting unit blades.

[0010] The scissors closing and locking mechanism described above includes a sheath with a magnet and a second side plate with a magnet groove. The magnet is embedded in the magnet groove. When the cutting edges of the two cutting unit blades are inserted into the plastic sheath, the magnet attracts the second rivet head at the end of the hinge shaft.

[0011] The scissor closing and locking mechanism of this utility model chicken bone scissors can be easily locked and unlocked after the scissors are closed by one hand, which is simple to operate and provides a good user experience. [Image Description]

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a front view of a multifunctional chicken bone shear according to an embodiment of this utility model.

[0014] Figure 2 This is a top view of the multifunctional chicken bone shears according to an embodiment of this utility model.

[0015] Figure 3 This is a rear view of the multifunctional chicken bone shears according to an embodiment of this utility model.

[0016] Figure 4 This is a perspective view of the multifunctional chicken bone shears according to an embodiment of the present invention.

[0017] Figure 5 This is a front view of the multifunctional chicken bone shears after removing the sheath, according to an embodiment of this utility model.

[0018] Figure 6 This is a rear view of the multifunctional chicken bone shears after the sheath has been removed, according to an embodiment of this utility model.

[0019] Figure 7 This is a perspective view of the multifunctional chicken bone shears after removing the sheath, according to an embodiment of this utility model.

[0020] Figure 8 This is a perspective view of the multifunctional chicken bone shears after the sheath has been removed, according to another embodiment of this utility model.

[0021] Figure 9 This is a front view of the multifunctional chicken bone shears in the open state according to an embodiment of this utility model.

[0022] Figure 10 This is a perspective view of the second shearing unit in an embodiment of this utility model.

[0023] Figure 11 This is a perspective view of the blade of the second shearing unit in an embodiment of this utility model.

[0024] Figure 12 This is a perspective view of the blade of the second shearing unit in an embodiment of this utility model.

[0025] Figure 13 This is a perspective view of the plastic handle of the second shearing unit in this embodiment of the present invention.

[0026] Figure 14 This is a perspective view of the first shearing unit in an embodiment of this utility model.

[0027] Figure 15 This is a perspective view of the blade of the first shearing unit in an embodiment of this utility model.

[0028] Figure 16 This is a perspective view of the blade of the first shearing unit in an embodiment of this utility model from another angle.

[0029] Figure 17 This is a perspective view of the plastic handle of the first shearing unit in this embodiment of the present invention.

[0030] Figure 18 This is a perspective view of the torsion spring according to an embodiment of the present invention.

[0031] Figure 19 This is a front view of the locking pin in an embodiment of this utility model.

[0032] Figure 20 This is a rear view of the multifunctional chicken bone shears in the open state according to an embodiment of this utility model.

[0033] Figure 21 yes Figure 20 AA section view in the image.

[0034] Figure 22 yes Figure 20 BB section view in the middle.

[0035] Figure 23 This is a perspective view of the scabbard according to an embodiment of the present invention.

[0036] Figure 24This is a front view of the scabbard according to an embodiment of this utility model.

[0037] Figure 25 This is a rear view of the scabbard according to an embodiment of the present invention.

[0038] Figure 26 yes Figure 25 CC section view in the image.

[0039] Figure 27 This is a rear view of the plastic knife sheath according to an embodiment of this utility model. [Detailed Implementation]

[0040] The structure of the multifunctional chicken bone shears in this embodiment of the utility model is as follows: Figures 1 to 27 As shown, the device includes two cutting units 100 and 200. The first cutting unit 100 includes a blade 10 and a plastic handle 20. The blade 10 includes a cutting edge 11 and a shank 12, with the shank 12 embedded in the plastic handle 20. A hinge hole 13 is provided between the cutting edge 11 and the shank 12 of the blade 10. The second cutting unit 200 includes a blade 30 and a plastic handle 40. The blade 30 includes a cutting edge 31 and a shank 32, with the shank 32 embedded in the plastic handle 40. A hinge hole 33 is provided between the cutting edge 31 and the shank 32 of the blade 30.

[0041] The shank 12 of the blade 10 of the first shearing unit 100 is riveted to the plastic handle 20 by two rivets 19, and the shank 32 of the blade 30 of the second shearing unit 200 is riveted to the plastic handle 40 by two rivets 39. The top of the plastic handle 20 of the first shearing unit 100 is covered with a silicone layer 21, and the bottom of the plastic handle 40 of the second shearing unit is covered with a silicone layer 41.

[0042] The hinge shaft 51 passes through the hinge hole 13 of the first shearing unit 100 and the hinge hole 33 of the second shearing unit 200, thereby achieving a hinge between the two shearing units. Both ends of the hinge shaft 51 have circular rivet heads 511.

[0043] The blade 10 of the first cutting unit 100 has a scissor blade 14 on the upper edge of its cutting edge 11, and the blade 30 of the second cutting unit 200 has a scissor blade 34 on the lower edge of its cutting edge 31. When the multi-functional chicken bone shears are opened, the cutting edge 11 of the blade 10 of the first cutting unit 100 is located below the cutting edge 30 of the blade 30 of the second cutting unit 200, and the lower edge of the cutting edge 11 of the blade 10 of the first cutting unit 100 (below the scissor blade 14) has a cutting edge 15, which is a symmetrical double-edged blade.

[0044] The upper edge of the blade 11 of the first shearing unit 100 includes a toothed blade 141 located in front of the shear blade 14 and an arc-shaped concave blade 142 located in the rear of the shear blade 14.

[0045] The hinge joints of the two shearing units 100 and 200 are equipped with a shear spring opening mechanism and a shear closing locking mechanism.

[0046] The scissor spring opening mechanism includes a torsion spring 52. The inner side of the blade 10 of the first shearing unit 100 includes an annular mounting groove 16 for the torsion spring. The annular mounting groove 16 is coaxial with the hinge hole 13. The outer edge of the annular mounting groove 16 has an end foot groove 161 for arranging the first torsion arm 521 of the torsion spring 52.

[0047] The inner side of the blade 30 of the second shearing unit 200 includes an annular mounting groove 36 for a torsion spring. The annular mounting groove 36 is coaxial with the hinge hole 33. The outer edge of the annular mounting groove 36 has an end foot groove 361 for arranging the second torsion arm 522 of the torsion spring 52.

[0048] The two ends of the torsion spring 52 are respectively arranged in the annular mounting grooves 16 and 36 of the two shearing unit blades. The first torsion arm 521 of the torsion spring 52 is arranged in the end foot groove 161 of the annular mounting groove 16, and the second torsion arm 522 of the torsion spring 52 is arranged in the end foot groove 361 of the annular mounting groove 36. The elastic force of the torsion spring 52 causes the blades of the two shearing units to open.

[0049] The rear end of the blade of the cutting unit is connected to the front end of the handle. The rear section of the handle of the blade 30 of the second cutting unit 200 is embedded in the plastic handle 40 and riveted to the plastic handle 40 by two rivets 39. The upper part of the front section of the handle of the blade 30 of the second cutting unit 200 has a slot 35 for a scissor closing locking mechanism, with the opening of the slot 35 facing rearward. The front end of the plastic handle 20 of the first cutting unit 100 has a downward-opening slot 22. When the scissor blades of the two cutting units 100 and 200 are closed, the upper part of the front section of the handle 32 of the blade 30 of the second cutting unit 200 is inserted into the slot 22. The front part of the plastic handle 20 of the first cutting unit 100 has a horizontally through, flat, elongated hole 23 that passes horizontally through the slot 22. When the plastic handle 20 of the first cutting unit 100 is arranged horizontally, the flat, elongated hole 23 is lower in the front and higher in the back.

[0050] The scissor closing locking mechanism includes a locking pin 60, which comprises a rivet 61, a damping spring 62, and a spring washer 63. The handle of the blade 10 of the first shearing unit 100 has a rivet clearance hole 17 corresponding to the elongated flat hole 23. Each end of the elongated flat hole 23 includes an elongated annular groove 231. The spring washer 63 sits on the bottom of one of the annular grooves 231. The rivet 61 passes through the damping spring 62, the spring washer 63, the clearance hole 17, and the elongated flat hole 23. Each end of the rivet 61 includes a rivet head 611. One end of the damping spring 62 rests against the spring washer 63, and the other end rests against the bottom surface of one rivet head 611. The other rivet head 611 sits on the bottom of the other annular groove 231. Under external force, the locking pin 60 can slide back and forth along the elongated flat hole 23, and the damping spring 62 keeps the locking pin 60 in a defined position within the elongated flat hole 23.

[0051] When the cutter is needed, the two cutting units are closed together, and their plastic handles are joined together to form the cutter's handle. The user holds the handle formed by the combination of plastic handles 20 and 40, pinches the two ends of the locking pin 60 with their thumb and forefinger, and pushes the locking pin 60 forward along the long axis of the elongated hole 23. The rivet 61 is engaged in the slot 35 on the upper front part of the handle of the blade 30 of the second cutting unit 200. At this time, the two cutter units will not separate, completing the locking of the multi-functional chicken bone shears, which can then be used as a cutter. When the scissors are needed, the user holds the handle formed by the combination of plastic handles 20 and 40, pinches the two ends of the locking pin 60 with their thumb and forefinger, and pulls the locking pin 60 backward along the long axis of the elongated hole 23. The rivet 61 disengages from the slot 35 on the upper front part of the handle of the blade 30 of the second cutting unit 200, releasing the second cutting unit 200 and unlocking the multi-functional chicken bone shears. Under the action of the torsion spring 52, the blades of the two shearing units open, and at this time the multi-functional chicken bone shears can be used as scissors.

[0052] When the multi-functional chicken bone shears need to be stored, they can be folded and locked into place by a sheath 300. The sheath 300 includes a plastic blade sleeve 70, a metal clip 80, and a magnet 90. The plastic blade sleeve 70 includes two side plates 71. At the rear opening of the plastic blade sleeve 70, the first side plate 711 has a rearward-opening arc-shaped groove 72 and a clearance groove at the front end of the plastic handle 20 of the first cutting unit. The arc-shaped groove 72 is located in front of the clearance groove, and the central angle α corresponding to the arc-shaped groove 72 is greater than 180°. When the cutting edges of the two cutting unit blades are inserted into the plastic blade sleeve 70, a circular rivet head 511 at the end of the hinge shaft 51 is engaged in the arc-shaped groove 72. The fixing end of the metal clip 80 is fixed to the rear end of the second side plate 712 of the plastic blade sleeve 70 by a screw 81, and the opening of the metal clip 80 faces forward. The second side plate 712 has an elongated hole 73 with its long axis arranged in the front-to-back direction. A concave beam 74, also arranged along the long axis, passes through the elongated hole 73. The concave beam 74 abuts against the cutting edge of the shearing unit blade, increasing the clamping force of the plastic blade sheath 70 on the multi-functional chicken bone shear blade.

[0053] The second side plate 712 has a circular magnet groove 75, in which a circular magnet 90 is embedded. When the blades of the two cutting units are inserted into the plastic blade sheath 70, the magnet 90 approaches and attracts another rivet head 611 at the end of the hinge shaft 51 to increase the adhesion of the plastic blade sheath 70 to the blade of the multi-functional chicken bone shears, making it less likely for the plastic blade sheath 70 to fall off the blade of the multi-functional chicken bone shears.

[0054] The scissor closing and locking mechanism of the multifunctional chicken bone scissors in the above embodiments of this utility model can be conveniently locked and unlocked after the scissors are closed by one hand, which is simple to operate and provides a good user experience.

[0055] The multi-functional chicken bone shears of the above embodiments of this utility model can be used directly as a cutter when the two cutting units are joined together, and as scissors when the two cutting units are opened. The conversion process does not require disassembly or assembly, and the conversion method is simple and convenient. In addition, the cutting blade of the multi-functional chicken bone shears of the above embodiments of this utility model can be a symmetrical double-edged blade, which ensures even distribution of cutting force during cutting, facilitates operation, reduces the risk of cutting off-center, and results in good cutting effect.

Claims

1. A scissor closing and locking mechanism for chicken bone scissors, the chicken bone scissors comprising two cutting units, each cutting unit comprising a blade and a plastic handle, the blade comprising a cutting edge and a shank, the rear end of the cutting edge being connected to the front end of the shank, the connection between the cutting edge and the shank including a hinge hole, the shank of the blade being embedded in the plastic handle; a hinge shaft passing through the hinge holes of the two cutting units to achieve hinge between the two cutting units; each of the opposing portions of the cutting edges of the two cutting units comprising a scissor blade, the cutting edge of the first cutting unit blade being located below the cutting edge of the second cutting unit blade, characterized in that, The hinge parts of the two cutting units include the scissor elastic opening mechanism and the scissor closing locking mechanism; the rear section of the blade handle of the second cutting unit is embedded in the plastic handle, the upper part of the front section of the blade handle of the second cutting unit includes the clamping groove of the rear opening of the scissor closing locking mechanism; the front end of the plastic handle of the first cutting unit includes the insertion slot of the downward opening, when the two cutting units are closed, the upper part of the front section of the blade handle of the second cutting unit enters the insertion slot; the front part of the plastic handle of the first cutting unit includes the oblong hole which is transversely through, the oblong hole transversely passes through the insertion slot; the scissor closing locking mechanism includes the lock pin which passes through the oblong hole, the handle of the blade of the first cutting unit includes the avoiding hole of the lock pin; when the two cutting units are closed, the lock pin moves forward along the long axis of the oblong hole and is clamped in the clamping groove of the upper part of the front section of the blade handle of the second cutting unit; when the two cutting units are opened, the lock pin moves backward along the long axis of the oblong hole and is separated from the clamping groove of the upper part of the front section of the blade handle of the second cutting unit.

2. The scissor fold lock mechanism of claim 1, wherein, The lock pin includes the rivet, the damping spring and the spring pad, the two ends of the oblong hole each include the oblong annular groove, the spring pad is seated on the groove bottom of one annular groove, the rivet passes through the damping spring, the spring pad and the oblong hole, the two ends of the rivet each include the rivet head; one end of the damping spring is on the spring pad, the other end is on the bottom surface of one rivet head; the other rivet head is seated on the groove bottom of the other annular groove; when the plastic handle of the first cutting unit is horizontally arranged, the oblong hole is low in front and high in back.

3. The scissor fold lock mechanism of claim 1, wherein, The scissor elastic opening mechanism includes the torsion spring, the inner side of the blade of the cutting unit includes the annular installation groove of the torsion spring, the annular installation groove is coaxial with the hinge hole, the outer edge of the annular installation groove includes the end foot groove of the arrangement of the torsion arm of the torsion spring; the torsion spring is arranged in the annular installation groove of the two blades of the cutting unit, the two torsion arms of the torsion spring are respectively arranged in the end foot grooves of the two annular installation grooves, the elastic force of the torsion spring makes the two cutting units open.

4. The scissor fold lock mechanism of claim 1, wherein, The handle of the blade is riveted with the plastic handle through the plurality of rivets, the top of the plastic handle of the first cutting unit and the bottom of the plastic handle of the second cutting unit are covered with the silica gel layer.

5. The scissor fold lock mechanism of claim 1, wherein, The scissor closing locking mechanism includes the scabbard, the scabbard includes the plastic scabbard and the metal clamping buckle, the plastic scabbard includes two side plates; at the opening part of the rear part of the plastic scabbard, the rear part of the first side plate includes the avoiding slot of the front end of the plastic handle of the first cutting unit and the arc-shaped groove, the arc-shaped groove is located in front of the avoiding slot, the corresponding central angle of the arc-shaped groove is greater than 180°; when the blade parts of the two cutting units are inserted into the plastic scabbard, the first rivet head of the circular end part of the hinge shaft is clamped in the arc-shaped groove; the fixed end of the metal clamping buckle is fixed on the rear end of the second side plate of the plastic scabbard through the screw, the opening direction of the metal clamping buckle is forward; the second side plate includes the long hole of which the long axis is arranged in the front and back directions, the long hole includes the inner recess beam which is arranged in the long axis direction; when the blade parts of the two cutting units are inserted into the plastic scabbard, the inner recess beam abuts against the blade parts of the cutting units.

6. The scissor lockout mechanism of claim 5, wherein, The scabbard includes the magnet, the second side plate includes the magnet groove, the magnet is embedded in the magnet groove, when the blade parts of the two cutting units are inserted into the plastic scabbard, the magnet attracts the second rivet head of the end part of the hinge shaft.

Images