Scissors with finger loop size adjustment mechanism

Abstract

The utility model discloses a pair of scissors with a finger ring size adjusting mechanism, which comprises a pair of scissors blades, a connecting box, a ratchet piece and a ratchet bar, wherein the two scissors blades are arranged in a cross shape, a connecting shaft is arranged at the intersection of the two scissors blades, and the two connecting boxes are connected with the corresponding scissors blades. The connecting box is rotatably connected with a cover through a plug pin, the ratchet piece is rotatably installed in the connecting box, a positioning spring set is arranged between the ratchet piece and the connecting box, a push rod penetrating through the cover is fixedly connected to the ratchet piece, the ratchet bar is rotatably connected with the connecting box through a plug pin, and the ratchet bar is connected with the ratchet piece. The ratchet piece and the ratchet bar are separated by the push rod, the ratchet bar and the ratchet piece are rotated away from each other, the size of the finger ring is increased, the ratchet bar is directly pressed to be close to the ratchet piece, the size of the finger ring is reduced, the finger directly contacts the connecting box, and the scissors blade directly opens and closes when the finger exerts force to control the cutting of the article. The utility model is convenient for cutting various articles and is not prone to the problem of cutting failure.

Description

Technical Field

[0001] This utility model relates to the field of scissors technology, specifically a pair of scissors with a ring size adjustment mechanism. Background Technology

[0002] Scissors are a common tool in daily life and production. Both handles of scissors have finger loops for fingers to pass through, allowing the handles to open or close relative to each other. The finger loops on the scissor handles are generally quite large, leaving ample space after a finger is inserted. When closing the handles, the pad of the finger contacts the inner wall of the loop, driving the handles. When opening the handles, the back of the finger contacts the outer wall of the loop, driving the handles. With such a large space in the loops, the range of finger movement is relatively large, leading to finger fatigue and even pain after prolonged use, resulting in a less than ideal feel.

[0003] To address the aforementioned issues, a solution exists for scissors (publication number CN211388882U) that automatically adjusts the tightness of the ring hole based on finger size. When a finger is inserted into the ring hole and the stopper is positioned near the cut, the corresponding part of the stopper undergoes elastic deformation, allowing the finger to pass through and adhere to it. Regardless of finger size, the finger can fit snugly against the elastically deformed stopper with appropriate tightness and good comfort. Fingers are less prone to fatigue when operating the two handles to open or close relative to each other. When children use it for crafts, there is no problem of the scissors falling due to an unstable grip.

[0004] However, in the above solution, the baffle is made of an elastic material, such as soft rubber or silicone, which is flexible and can return to its original state after deformation. When the fingers exert force to grip the scissors, the baffle is compressed first. Only after being compressed to a certain extent can the scissors close. This problem is more obvious for thinner fingers, causing the scissors to not close in time. When the scissor blade becomes slightly dull, or when cutting packaging boxes or thick fabrics, it is easy to encounter situations where the cut cannot be made. Utility Model Content

[0005] The purpose of this invention is to provide a pair of scissors with a ring size adjustment mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pair of scissors with a ring size adjustment mechanism, comprising two scissor blades, wherein a connecting shaft is installed at the intersection of the two scissor blades; The connecting box is provided in two parts, and the two connecting boxes are connected to the corresponding scissor blades. The connecting box is connected to the cover by a pin and is C-shaped, which makes it easy to put fingers of different sizes into the connecting box. It is suitable for different people and has a wide range of applications. The ratchet is rotatably installed inside the connecting box. A positioning spring assembly is provided between the ratchet and the connecting box. The positioning spring assembly can ensure that the ratchet and the ratchet are stably locked and not prone to loosening. A lever that passes through the cover is fixedly connected to the ratchet. The size of the ring can be quickly adjusted by using the lever, making the operation convenient and easy. The ratchet is rotatably connected to the connecting box via a pin. The ratchet engages with the ratchet plate. Rotating the ratchet changes the size of the ring to meet the needs of users with different finger sizes. The force applied by the finger is directly applied to the scissor blade, making cutting items fast and stable.

[0007] Furthermore, the ratchet is located between the connecting box and the cover, and the connecting boxes and covers on the left and right sides are staggered to avoid interference between the connecting boxes and covers on both sides during use, thereby improving the smoothness and comfort of operation and preventing the scissor blades from getting stuck when closed.

[0008] Furthermore, the cover surface is provided with a groove, the size of which is larger than that of the lever. The lever passes through the groove, providing room for its movement and ensuring that the lever can smoothly drive the ratchet plate to rotate to achieve unlocking. At the same time, the size of the groove is adapted to the lever, which can reduce the entry of dust and other debris into the interior, thus balancing functionality and protection.

[0009] Furthermore, the scissor blade is fixedly connected to a connector, which is inserted into the slot of the connector box. When the scissor blade or the connector box is damaged, it can be replaced separately, and it is also convenient for the connector box to be equipped with different types of scissor blades.

[0010] Furthermore, the cover is plugged with two hexagonal socket head caps that are screwed into the connecting box, achieving a firm connection between the cover and the connecting box. The cover is also plugged with an anti-loosening bolt that passes through the plug and is screwed into the connecting box, which enhances the connection stability between the scissor blade and the connecting box, prevents loosening or falling off during use, and improves the overall structural strength of the scissors.

[0011] Furthermore, the positioning spring assembly includes a first spring and a second spring. The first spring is located on the right side of the ratchet plate, and the second spring is located on the upper side of the ratchet plate. This ensures that the ratchet plate is stably engaged with the ratchet rack in its natural state, while providing appropriate elastic feedback during lever operation, thus ensuring the reliability of ratchet engagement and unlocking.

[0012] Furthermore, the connecting box is equipped with a positioning post, and the ratchet plate is equipped with a movable opening. The movable opening is fitted onto the positioning post, providing precise guidance and limiting for the rotation of the ratchet plate, preventing the ratchet plate from deviating or wobbling during rotation, and ensuring the accuracy and stability of the meshing between the ratchet plate and the ratchet rack.

[0013] Furthermore, the ratchet plate and ratchet rack each have several first ratchet teeth and second ratchet teeth in opposite directions. When they are engaged, they can form a one-way lock to ensure that the size of the adjusted ring will not change on its own due to external force during use.

[0014] Compared with the prior art, the beneficial effects of this utility model are: (1) By using the lever to control the ratchet plate and ratchet rack to separate, rotate the ratchet rack away from the ratchet plate to increase the size of the ring, and press the ratchet rack close to the ratchet plate to decrease the size of the ring. Adjusting the size of the ring is convenient and quick. The finger directly contacts the connecting box. When the finger exerts force to control the scissor blade to cut the item, the scissor blade opens and closes directly, just like traditional scissors. This makes it convenient to cut various items and is less likely to cause problems with not being able to cut.

[0015] (2) The scissor blade is inserted into the slot of the connector box through the plug. After unscrewing the anti-disengagement bolt, the scissor blade and the connector box can be separated, which makes it convenient to replace the scissor blade and the connector box. It also makes it convenient for the connector box to be equipped with a variety of scissor blades to meet diverse cutting needs.

[0016] (3) The ratchet plate is positioned by the first spring, the second spring, and the positioning pin to ensure that the ratchet plate is stably locked in the ratchet rack. The two are not easy to loosen. When the scissors are opened, the ratchet rack will not shake significantly. The scissors open and close smoothly and are easy to use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a structural diagram showing the disassembled scissor blade and connecting box of this utility model; Figure 3 This is a schematic diagram of the internal structure of the connector box of this utility model; Figure 4 This is a schematic diagram of the ratchet plate of this utility model locking the ratchet rack; Figure 5 This is a schematic diagram of the ratchet rack of this utility model; Figure 6 This is a diagram showing the rotation state of the ratchet rack of this utility model.

[0018] In the diagram: 1. Scissor blade; 2. Connecting shaft; 3. Cover; 4. Connecting box; 5. Hex socket head cap screw; 6. Anti-loosening bolt; 7. Ratchet; 8. Insert pin; 9. Lever; 10. Connector; 11. Groove; 12. Second ratchet tooth; 13. Ratchet plate; 14. Movable opening; 15. Positioning pin; 16. First ratchet tooth; 17. First spring; 18. Second spring; 19. Slot. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0020] Please see Figure 1-6 This utility model provides a technical solution: a pair of scissors with a ring size adjustment mechanism, including two scissor blades 1, and a connecting shaft 2 is installed at the intersection of the two scissor blades 1. The two scissor blades 1 open and close with the connecting shaft 2 as the center, and can cut items. Two connecting boxes 4 are provided, and the two connecting boxes 4 are connected to the corresponding scissor blades 1. The connecting boxes 4 are rotatably connected to the caps 3 via pins 8. The connecting boxes 4 and the caps 3 are arranged in a C-shape, which fits well with the fingers, improves the comfort of using the scissors, and makes it easier to put the fingers into the ring. The ratchet 13 is rotatably installed inside the connecting box 4. A positioning spring assembly is provided between the ratchet 13 and the connecting box 4. The positioning spring assembly can ensure that the ratchet 13 will not loosen and maintain the ratchet 13 in a locked state with the ratchet 7, preventing the ratchet 7 from accidentally loosening. A lever 9 that passes through the cover 3 is fixedly connected to the ratchet 13. To separate the ratchet 13 and the ratchet 7, the lever 9 can be pushed. The operation is simple and can quickly adjust the size of the ring. The ratchet 7 is rotatably connected to the connecting box 4 via the pin 8. The ratchet 7 is engaged with the ratchet plate 13. Rotating the ratchet 7 changes the size of the ring, allowing fingers of different thicknesses to fit the ring better, making it easier to control the opening and closing of the scissors, relieving finger discomfort, and preventing the scissors from easily falling off the fingers.

[0021] In this embodiment, as Figure 1As shown, the ratchet 7 is located between the connecting box 4 and the cover 3. The connecting boxes 4 and the cover 3 on the left and right sides are staggered. When the scissor blade 1 is closed, the connecting boxes 4 on the left and right sides will not touch each other, ensuring that the scissor blade 1 closes smoothly. When the scissors are not in use, the scissor blade 1 is in a retracted state, and the tip of the scissor blade 1 is flattened to avoid punctures and make it safer to use.

[0022] In this embodiment, as Figure 2 As shown, the surface of the cover 3 is provided with a groove 11. The size of the groove 11 is larger than that of the lever 9. The lever 9 passes through the groove 11. The groove 11 limits the lever 9 and also positions the ratchet 13, restricting the free sliding of the ratchet 13. The groove 11 can limit the range of motion of the lever 9, making it more stable to control the movement of the ratchet 13 using the lever 9.

[0023] In this embodiment, as Figure 2 As shown, the scissor blade 1 is fixedly connected to a connector 10. The connector 10 is inserted into the slot 19 of the connector box 4 to realize the plug-in connection between the scissor blade 1 and the connector box 4. The connector box 4 and the scissor blade 1 can be replaced, reducing maintenance costs. The connector box 4 can also be equipped with various scissor blades 1 for easy combination use.

[0024] In this embodiment, as Figure 1 and Figure 2 As shown, the cover 3 is plugged with two hexagonal socket bolts 5 that are screwed into the connecting box 4. The cover 3 protects the ratchet plate 13. The two hexagonal socket bolts 5 are fixed and stable to prevent the cover 3 from loosening. The cover 3 is also plugged with an anti-disengagement bolt 6 that passes through the connector 10. The anti-disengagement bolt 6 is screwed into the connecting box 4. The anti-disengagement bolt 6 prevents the scissor blade 1 from accidentally separating from the connecting box 4 and also improves the stability of the opening and closing of the scissor blade 1.

[0025] In this embodiment, as Figure 3 As shown, the positioning spring assembly includes a first spring 17 and a second spring 18. The first spring 17 is located to the right of the ratchet plate 13. The first spring 17 can ensure that the ratchet plate 13 moves to the left. When the ratchet rack 7 pushes the ratchet plate 13, the ratchet plate 13 can be reset and lock the ratchet rack 7. The second spring 18 is located on the upper side of the ratchet plate 13. After the lever 9 pushes the ratchet plate 13 and the ratchet rack 7 to separate, the second spring 18 pushes the ratchet plate 13 down to prepare for the next locking of the ratchet plate 13 and the ratchet rack 7.

[0026] In this embodiment, as Figure 3 and Figure 4 As shown, the connecting box 4 has a positioning post 15 inside, and the ratchet plate 13 has a movable opening 14. The movable opening 14 is fitted onto the positioning post 15. The movable opening 14 has a certain length, allowing the ratchet plate 13 to move flexibly, improving the smoothness of the engagement between the ratchet rack 7 and the ratchet plate 13, and preventing jamming.

[0027] In this embodiment, as Figure 4 As shown, the ratchet plate 13 and the ratchet rack 7 each have a number of first ratchet teeth 16 and second ratchet teeth 12 in opposite directions. The ratchet plate 13 can hold the second ratchet teeth 12 with the first ratchet teeth 16, which can prevent the ratchet rack 7 from moving away from the ratchet plate 13 and help the fingers to stably open the scissors.

[0028] Specifically, when using it, place your finger between the connecting box 4 and the ratchet 7. Your finger directly contacts the connecting box 4. To control the scissor blade 1 to close, simply pinch the two connecting boxes 4. To open the scissor blade 1, simply open the ratchet 7 with your finger. When changing the size of the ring, if the ring is reduced, the ratchet 7 can be pressed directly. The second ratchet tooth 12 of the ratchet 7 pushes the ratchet plate 13, and the ratchet plate 13 compresses the second spring 18. After releasing the ratchet 7, the second spring 18 pushes the ratchet plate 13 to reset. The first ratchet tooth 16 of the ratchet plate 13 locks the second ratchet tooth 12, and the finger fits well with the ratchet 7 and the connecting box 4. When increasing the ring size, push the lever 9 to move the ratchet plate 13. The first ratchet tooth 16 and the second ratchet tooth 12 of the ratchet plate 13 separate. At this time, the ratchet rack 7 can be rotated away from the ratchet plate 13, which makes it convenient for users to flexibly change the size of the ring according to their needs.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pair of scissors with a ring size adjustment mechanism, characterized in that, include: Scissor blades (1), two scissor blades (1) are provided, and a connecting shaft (2) is installed at the intersection of the two scissor blades (1). Connecting box (4), two connecting boxes (4) are provided, and the two connecting boxes (4) are connected to the corresponding scissor blade (1). The connecting box (4) is rotatably connected to the cover (3) by the pin (8). The connecting box (4) and the cover (3) are arranged in a C shape. A ratchet plate (13) is rotatably installed inside the connecting box (4). A positioning spring assembly is provided between the ratchet plate (13) and the connecting box (4). A lever (9) passing through the cover (3) is fixedly connected to the ratchet plate (13). The ratchet (7) is rotatably connected to the connecting box (4) via a pin (8). The ratchet (7) is engaged with the ratchet plate (13). Rotating the ratchet (7) changes the size of the ring.

2. The scissors with a ring size adjustment mechanism according to claim 1, characterized in that: The ratchet (7) is located between the connecting box (4) and the cover (3), and the connecting boxes (4) and the cover (3) on the left and right sides are staggered.

3. The scissors with a ring size adjustment mechanism according to claim 1, characterized in that: The cover (3) has a groove (11) on its surface. The size of the groove (11) is larger than that of the lever (9). The lever (9) passes through the groove (11).

4. The scissors with a ring size adjustment mechanism according to claim 1, characterized in that: The scissor blade (1) is fixedly connected to a connector (10), which is inserted into the slot (19) of the connector box (4).

5. A pair of scissors with a ring size adjustment mechanism according to claim 4, characterized in that: The cover (3) is fitted with two internal hex bolts (5) that are screwed into the connecting box (4). The cover (3) is also fitted with an anti-loosening bolt (6) that passes through the plug (10) and is screwed into the connecting box (4).

6. A pair of scissors with a ring size adjustment mechanism according to claim 1, characterized in that: The positioning spring assembly includes a first spring (17) and a second spring (18), with the first spring (17) located to the right of the ratchet plate (13) and the second spring (18) located on the upper side of the ratchet plate (13).

7. A pair of scissors with a ring size adjustment mechanism according to claim 1, characterized in that: The connecting box (4) is provided with a positioning post (15) inside, and the ratchet plate (13) is provided with a movable opening (14), which is fitted onto the positioning post (15).

8. A pair of scissors with a ring size adjustment mechanism according to claim 1, characterized in that: The ratchet plate (13) and the ratchet bar (7) each have a number of first ratchet teeth (16) and second ratchet teeth (12) in opposite directions.

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