Scissors with ratchet wheel structure

Abstract

The utility model provides scissors with a ratchet wheel structure, which comprise a first scissor blade, a second scissor blade, a first handle and a second handle, the first handle and the second handle are respectively used for controlling the first scissor blade and the second scissor blade, a first connecting end and a second connecting end are arranged at the tail end of the first scissor blade, and the first connecting end is fixedly connected with the front end of the first handle. The second connecting end is pivoted with the front end of the second handle through a first connecting shaft, the first connecting shaft is connected with a ratchet mechanism, a tooth part matched with the ratchet mechanism is arranged at the tail end of the second shear blade, and the ratchet mechanism can be driven by operating the first handle to rotate so that the second shear blade can be close to the first shear blade to be meshed and opened to reset. A limiting piece for limiting the opening angle of the second shear blade is arranged on the first shear blade, and the second shear blade is connected with a first reset spring. The pair of scissors has the advantages that closing and meshing of the second scissor blade towards the first scissor blade and opening and resetting of the second scissor blade relative to the first scissor blade are both completed through single operation, namely rotation of the second handle from the first position to the second position, and the operation process is simpler, more convenient and easier to implement.

Description

Technical Field

[0001] This utility model relates to a pair of scissors, and more specifically, to a pair of scissors with a ratchet structure, suitable for scenarios requiring labor-saving cutting operations, such as gardening and industrial cutting. Background Technology

[0002] People frequently use scissors when cooking, especially when processing cooked foods such as chicken, duck, and goose, which require cutting these ingredients into small pieces with scissors. Cutting the bones of these foods often requires considerable force. In such cases, prolonged use can easily lead to hand muscle fatigue and may even cause hand strain.

[0003] Although some new types of scissors with improved designs to traditional scissors have appeared on the market, such as the Chinese utility model patent with patent number 201520942515.3, entitled "An Improved Structure of Chicken Bone Scissors," which includes a hinged main blade and a secondary blade, and a latching switch structure located near the hinge joint between the main blade and the secondary blade, the latching switch includes a latching switch on the inner end face of the main blade facing the secondary blade, and a protrusion on the secondary blade facing the latching switch and engaging with it. While this technical solution makes the scissors relatively easy to operate, it still has some inconveniences, such as low cutting efficiency and less smooth operation.

[0004] Therefore, there is an urgent need to develop a new type of scissor structure that can effectively reduce the force required by the user, while providing a more convenient operating experience, thereby improving cutting efficiency and reducing hand fatigue. Summary of the Invention

[0005] The purpose of this invention is to solve the aforementioned technical problems and to provide a pair of scissors with a ratchet structure. By setting up the ratchet mechanism, it can achieve labor-saving cutting and improve the convenience and efficiency of operation.

[0006] This utility model is achieved through the following technical solution.

[0007] This utility model provides a pair of scissors with a ratchet structure, including a first and a second pair of scissors pivotally connected together by a pivot pin, and a first and a second handle for operating the first and second scissors respectively. The tail end of the first scissors has a first connecting end and a second connecting end. The first connecting end is fixedly connected to the front end of the first handle, and the second connecting end is pivotally connected to the front end of the second handle via a first connecting shaft. The first connecting shaft is connected to a ratchet mechanism. The tail end of the second scissors has teeth that cooperate with the ratchet mechanism. When the second handle rotates around the corresponding pivot axis, it has a first position away from the first handle and a position close to the first handle. In the second position of the first handle, when the second handle rotates from the first position to the second position, the second handle drives the ratchet mechanism to bring the second scissors closer to engage with the first scissors. When the first and second scissors are fully engaged and the second handle is in the first position, rotating the second handle from the first position to the second position drives the ratchet mechanism to disengage from the teeth of the second scissors, so that the second scissors open relative to the first scissors and return to their initial position. The first scissors are provided with a limiting member to restrict the opening angle of the second scissors relative to the first scissors, and the second scissors are connected to a first return spring that provides elastic force for the second scissors to open relative to the first scissors.

[0008] In the above technical solution, a cleverly designed ratchet mechanism successfully achieves the one-way locking function of the shear blades. This mechanism allows users to perform only unidirectional movement when operating the handle. Specifically, when the second handle rotates from its initial first position to the second position, the ratchet mechanism activates, driving the second shear blade to gradually approach the first shear blade until they are fully engaged. This process not only ensures the accuracy of cutting but also improves operational efficiency. Even more user-friendly is that after the second and first shear blades are fully engaged, the user can continue to operate the second handle, rotating it from the first position to the second position. At this point, the ratchet mechanism will again activate, helping the second shear blade to automatically reset. This design greatly simplifies the operation process, making the entire cutting process easier and more convenient, while also improving user comfort and safety.

[0009] Preferably, the ratchet mechanism includes a first gear disk, a second gear disk, a first pawl, a second pawl, a first elastic element, and a second elastic element. The first and second gear disks are respectively disposed on the inner and outer sides of the second connecting end and are mounted on and fixed to the first connecting shaft. The first gear disk engages with the teeth of the second scissor blade. The first pawl engages with the first gear disk to push the first gear disk to rotate forward. The second pawl engages with the second gear disk to lock and restrict the second gear disk from rotating backward. The first elastic element provides elastic force for the first pawl to press against the first gear disk, and the second elastic element provides elastic force for the second pawl to press against the second gear disk. In this technical solution, when the first pawl engages with the first gear disk, it can push the first gear disk to rotate forward when the user operates the handle, thereby driving the second scissor blade to move closer to the first scissor blade. The second pawl engages with the second gear disk, and its function is to lock the second gear disk after the first gear disk rotates, preventing it from rotating backward, thus realizing the one-way locking of the ratchet mechanism. Furthermore, the inclusion of the first and second elastic elements provides the necessary elastic force for the pawl to clamp the gear disc, ensuring the stability and reliability of the ratchet mechanism during operation. This design not only improves the cutting efficiency of the scissors but also ensures user safety during operation.

[0010] Preferably, the first pawl engages with both the first and second gear disks simultaneously. This allows the front end of the first pawl to simultaneously abut against the teeth of both the first and second gear disks, resulting in a larger contact area. Consequently, when the second handle rotates from the first position to the second position, the first pawl simultaneously pushes both the first and second gear disks forward, causing the second shear blade to move closer to the first shear blade, thus improving stability.

[0011] Preferably, the rim of the first gear disk is provided with a tooth-removing opening. When the second shear blade is fully engaged with the first shear blade, the tooth portion disengages from the first gear disk through the tooth-removing opening. In this technical solution, during the rotation of the first gear disk, when the tooth portion passes through the tooth-removing opening, the tooth portion cannot engage with the first gear disk, and the second shear blade can smoothly open and reset relative to the first shear blade, thereby completing one shearing action.

[0012] Preferably, the first gear disk has two tooth-removing openings, which are symmetrically arranged on the rim of the first gear disk and located on the same diameter. In this technical solution, during the rotation of the first gear disk, when the teeth of the blade pass through the tooth-removing opening, the teeth cannot mesh with the first gear disk, and the second shear blade can smoothly open and reset relative to the first shear blade, thereby completing one cutting action. The tooth-removing openings not only ensure the smoothness of the shears during the cutting process but also improve the reset efficiency of the shears. In addition, the two tooth-removing openings are symmetrically arranged on the rim of the first gear disk and located on the same diameter. This layout allows the first gear disk to complete one full engagement and opening / resetting of the first and second shear blades with only half a rotation, making the cutting action smoother and the operation simpler.

[0013] Preferably, the front end of the second handle has a groove, the first gear disk and the second gear disk are located in the groove, the rear end of the first pawl is pivotally connected to the groove via a second connecting shaft, and the front end of the first pawl abuts against the teeth of the first gear disk and the second gear disk so that when the second handle rotates from the first position to the second position, the first pawl can push the first gear disk and the second gear disk to rotate forward. One end of the first elastic element abuts against the first pawl, and the other end of the first elastic element abuts against the groove wall. In this technical solution, the groove design at the front end of the second handle cleverly accommodates key components such as the first gear disk, the second gear disk, and the first pawl, making the entire scissors structure more compact and the appearance simpler. At the same time, this design also facilitates users to clean and maintain the scissors, extending their service life.

[0014] Preferably, the upper end of the second pawl is pivotally connected to the outside of the first shear blade via a third connecting shaft, and the lower end of the second pawl abuts against the teeth of the second gear disk to lock it when the second gear disk rotates backward. One end of the second elastic member abuts against the second pawl, and the other end of the second elastic member abuts against the first shear blade. In this technical solution, when the second handle rotates back from the second position to the first position, the second gear disk is locked by the second pawl and cannot rotate in the opposite direction, thereby preventing the first and second shear blades from accidentally releasing and ensuring the stability and safety of the shearing action. At the same time, the second elastic member allows the second pawl to automatically reset, preparing for the next shearing action, improving the convenience and efficiency of operation.

[0015] Preferably, the inner sides of the first and second scissor blades are provided with recessed grooves at the positions corresponding to the pivot pins. The recessed grooves are circumferentially connected to positioning grooves. The first return spring is a ring-shaped torsion spring, which is fitted onto the pivot pin and housed in the recessed groove. One end of the torsion spring is engaged in the positioning groove on the inner side of the first scissor blade, and the other end is engaged in the positioning groove on the inner side of the second scissor blade. This technical solution cleverly conceals the torsion spring, making the scissors look neater and more aesthetically pleasing. It also enhances the stability of the torsion spring, preventing displacement or detachment during cutting, thus ensuring the stability and durability of the scissors. Furthermore, the recessed grooves and positioning grooves make the installation and removal of the torsion spring more convenient and quick.

[0016] Preferably, the second shear blade has a clearance groove at the position corresponding to the limiting member. The depth of the clearance groove is set such that when the bottom of the clearance groove abuts against the limiting member, the teeth can engage with the ratchet mechanism, allowing the ratchet mechanism to drive the second shear blade to rotate. In this way, with the cooperation of the clearance groove and the limiting member, when the second shear blade opens relative to the first shear blade, it can avoid the second shear blade opening excessively, which would prevent the teeth from engaging with the ratchet mechanism and affect the performance.

[0017] Preferably, the limiting member is a column protruding outward from the inner side of the first shear blade. This ensures that the limiting member can firmly abut against the bottom of the clearance groove without excessively hindering the normal rotation of the second shear blade.

[0018] Preferably, a second return spring is provided between the first handle and the second handle to provide elastic force for the second handle to open relative to the first handle. One end of the second return spring is connected and fixed to the inner side of the first handle, and the other end is connected and fixed to the inner side of the second handle. In this technical solution, when the user operates the scissors to perform a cutting action, the second handle will automatically return to its initial position under the action of the second return spring. This design not only improves the ease of use of the scissors, but also saves the user's operating time and effort.

[0019] The advantage of this invention lies in the fact that by continuously rotating the second handle from the first position to the second position, the second blade can gradually approach the first blade, ultimately achieving a fully engaged state, thereby cutting the object being cut. Compared to traditional scissors, this design is more labor-saving. Furthermore, after the second blade and the first blade are fully engaged, continuing to rotate the second handle from the first position to the second position causes the teeth of the second blade to automatically return to their original position under the action of the first return spring as they pass through the tooth-disengaging opening of the first gear disc. That is, both the engagement of the second blade towards the first blade and its opening relative to the first blade are accomplished through a single operation—rotating the second handle from the first position to the second position—making the operation simpler and easier. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention when the first and second shear blades are not engaged. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention when the first and second shear blades are fully engaged.

[0022] Figure 3 This is a schematic diagram of the overall structure of the present invention when the first and second shear blades are not engaged. Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the present invention with the second handle omitted.

[0024] Figure 5 for Figure 4 A magnified view of part A;

[0025] Figure 6 This is a schematic diagram of the structure of the first gear disk and the second gear disk of this utility model mounted on the first connecting shaft;

[0026] Figure 7 This is a schematic diagram of the present invention, omitting the first shear blade and the first handle;

[0027] Figure 8 for Figure 7 A magnified view of part B. Detailed Implementation

[0028] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0029] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0030] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0031] Example 1

[0032] This utility model discloses a pair of scissors equipped with a ratchet mechanism, such as... Figure 1 and Figure 2 As shown, the scissors consist of two main parts: a first scissor blade 1 and a second scissor blade 2, which are cross-connected by a pivot pin 3. Additionally, it includes a first handle 4 and a second handle 6 for operating the two scissors. The first scissor blade 1 has two connecting ends at its tail end. The first connecting end 11 is fixedly connected to the front end of the first handle 4, while the second connecting end 12 is pivotally connected to the front end of the second handle 6 via a connecting shaft 5. This connecting shaft 5 is also equipped with a ratchet mechanism 7, allowing the teeth 21 at the tail end of the second scissor blade 2 to engage with it. When the second handle 6 rotates about its pivot axis, it can be in two positions: a first position away from the first handle 4 and a second position close to the first handle 4. When the second handle 6 rotates from the first position to the second position, the second handle 6 will drive the ratchet mechanism 7 to rotate the second blade 2 closer to the first blade 1. When the first blade 1 and the second blade 2 are fully engaged, and the second handle 6 is in the first position, the rotation of the second handle 6 from the first position to the second position can disengage the ratchet mechanism 7 from the teeth 21 of the second blade 2, so that the second blade 2 can open relative to the first blade 1 and return to the initial position.

[0033] like Figure 2 As shown, in this embodiment, in order to limit the opening angle of the second shear blade 2 relative to the first shear blade 1, the first shear blade 1 is also provided with a corresponding limiting member 13. The limiting member 13 is designed as a column protruding outward relative to the inner side of the first shear blade 1, so as to realize its function of limiting the opening angle of the second shear blade 2. At the same time, the second shear blade 2 is provided with a relief groove 22 at the position corresponding to the limiting member 13. The depth of the relief groove 22 is set such that when the bottom of the relief groove 22 abuts against the limiting member 13, the toothed part 21 can cooperate with the ratchet mechanism 7. In addition, as Figure 8 As shown, a first return spring 8 is connected to the second shear blade 2. This spring provides the necessary elastic force for the second shear blade 2 to open relative to the first shear blade 1. Specifically, a recess 81 is provided on the inner side of the first shear blade 1 and the second shear blade 2 at the position corresponding to the pivot pin 3. The recess 81 is circumferentially connected to a positioning groove 82. The first return spring 8 is a ring-shaped torsion spring. The spring is fitted on the pivot pin 3 and housed in the recess 81. One end of the torsion spring is stuck in the positioning groove 82 on the inner side of the first shear blade 1, and the other end is stuck in the positioning groove 82 on the inner side of the second shear blade 2.

[0034] like Figures 3 to 7As shown, in this embodiment, the ratchet mechanism 7 includes a first gear disk 71, a second gear disk 72, a first pawl 73, a second pawl 76, a first elastic element 74, and a second elastic element 77. The first gear disk 71 and the second gear disk 72 are respectively disposed on the inner and outer sides of the second connecting end 12 and are mounted on the first connecting shaft 5 and connected and fixed to the first connecting shaft 5. The first gear disk 71 engages with the teeth 21 of the second shear blade 2, while the first pawl 73 engages with the first gear disk 71 to push the first gear disk 71 to rotate forward. The second pawl 76 engages with the second gear disk 72 to lock and restrict the second gear disk 72 from rotating backward. The first elastic element 74 provides the necessary elastic force for the first pawl 73 to press against the first gear disk 71, while the second elastic element 77 provides the necessary elastic force for the second pawl 76 to press against the second gear disk 72.

[0035] like Figure 5 As shown, in this embodiment, the first gear disk 71 has a tooth-removing opening 711 on its rim. When the second shear blade and the first shear blade are fully engaged, the tooth portion disengages from the first gear disk through the tooth-removing opening.

[0036] like Figure 5 and Figure 6 As shown, as a further improvement, the number of tooth-removing openings 711 can be one or more, depending on the number of teeth on the first gear disk 71. It is sufficient to ensure that when the teeth 21 of the second shear blade 2 pass through the tooth-removing opening 711, the second shear blade 2 and the first shear blade 1 are in a fully engaged state. In this embodiment, there are two tooth-removing openings 711, which are symmetrically arranged on the rim of the first gear disk 71 and located on the same diameter. This design allows the second shear blade 2 to open and return to its original position relative to the first shear blade 1 when the teeth 21 pass through the tooth-removing opening 711. It should be noted that a half-turn rotation of the first gear disk 71 is sufficient to complete one full engagement and retraction of the second shear blade 2 and the first shear blade 1, making the shearing action smoother and the operation simpler.

[0037] like Figure 7As shown, as a further improvement, a groove structure is provided at the front end of the second handle 6. Inside this groove, the first gear disk 71 and the second gear disk 72 are arranged. These two gear disks work together to ensure the high efficiency and precision of the mechanical transmission. The rear end of the first pawl 73 is pivotally connected to the groove through the second connecting shaft 75, ensuring the stability and flexibility of the pawl. The front end of the first pawl 73 is in close contact with the teeth of the first gear disk 71 and the second gear disk 72. One end of the first elastic element 74 is in close contact with the first pawl 73, while the other end is in close contact with the groove wall. This elastic element design can not only absorb the impact and vibration during operation, but also provide the necessary elasticity to ensure good contact between the pawl and the gear disk, thereby ensuring the smooth operation of the entire mechanical system.

[0038] like Figure 7 As shown, in this embodiment, the upper end of the second pawl 76 is pivotally connected to the outside of the first shear blade 1 via the third connecting shaft 78, while the lower end of the second pawl 76 is tightly abutted against the teeth of the second gear disk 72, forming an effective contact point. This design allows the second pawl 76 to promptly lock the second gear disk 72 when it rotates backward during operation, thereby ensuring the stability and reliability of the entire mechanism. The second elastic element 77 is disposed between the second pawl 76 and the first shear blade 1. Specifically, one end of the second elastic element 77 is tightly abutted against the second pawl 76, providing necessary elastic support, while the other end is tightly abutted against the edge of the first shear blade 1, ensuring the stability of the entire structure.

[0039] The working principle of this utility model is as follows: Figure 1 As shown, firstly, when the second shear blade 2 is open relative to the first shear blade 1, the second handle 6 is rotated from a first position away from the first handle 4 to a second position closer to the first handle 4. The first pawl 73 pushes the first gear disk 71 to rotate forward. The first gear disk 71 drives the second gear disk 72 to rotate forward through the second connecting shaft 5 fixed to the first gear disk 71 and the second gear disk. The first gear disk 71 drives the teeth 21 that mesh with it to rotate downward. The front part of the second shear blade 2 moves upward and approaches the first shear blade 1. During the process of releasing the second handle 6 to return to the first position, the lower end of the second pawl 76 abuts against the teeth of the second gear disk 72 and locks the second gear disk 72. The second gear disk 72 and the first gear disk 71 cannot rotate backward. The second shear blade 2 maintains the state with the first shear blade 1. Repeating the operation of rotating the second handle 6 from the first position to the second position will make the second shear blade 2 and the first shear blade 1 fully mesh.

[0040] Then, after the second shear blade 2 is fully engaged with the first shear blade 1, the second handle 6 is rotated from the first position to the second position. The toothed part 21 can no longer engage with the first gear disk 71 after passing through the tooth-removing opening 711. Under the elastic force of the first return spring 8, the second shear blade 2 returns to the position that is open relative to the first shear blade 1.

[0041] Repeat the above operation to rotate the second handle 6 from the first position to the second position, so that the second shear 2 can move closer to the first shear 1 until it is fully engaged, and the second shear 2 can automatically return to the open position relative to the first shear 1, making the operation process simpler and easier.

[0042] Example 2

[0043] The structure of this embodiment is similar to that of Embodiment 1, except that, as follows: Figure 5 As shown, the first pawl 73 engages with both the first gear disk 71 and the second gear disk 72 simultaneously. That is, the front end of the first pawl 73 simultaneously abuts against the teeth of both the first gear disk 71 and the second gear disk 72, resulting in a larger contact area. When the second handle 2 rotates from the first position to the second position, the first pawl 73 simultaneously pushes the first gear disk 71 and the second gear disk 72 forward, eliminating the need to drive the second gear disk 72 to rotate through the second connecting shaft 5, thus improving stability.

[0044] Example 3

[0045] The structure of this embodiment is similar to that of embodiment 2, except that, as follows: Figure 2 As shown, a second return spring 9 is provided between the first handle 4 and the second handle 6 to provide elastic force for the second handle 6 to open relative to the first handle 4. One end of the second return spring 9 is connected and fixed to the inner side of the first handle 4, and the other end is connected and fixed to the inner side of the second handle 6. In this way, when the second handle 6 reaches the second position, after the force applied to the second handle 6 is removed, the second handle 6 can automatically return to its original position, saving the user the trouble of operation and making the operation more convenient.

[0046] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A pair of scissors with a ratchet structure, comprising a first and a second scissor blade pivotally connected together by a pivot pin, and a first and a second handle for respectively manipulating the first and second scissor blades, characterized in that: The first shear blade has a first connecting end and a second connecting end at its tail end. The first connecting end is fixedly connected to the front end of the first handle, and the second connecting end is pivotally connected to the front end of the second handle via a first connecting shaft. The first connecting shaft is connected to a ratchet mechanism. The tail end of the second shear blade has teeth that cooperate with the ratchet mechanism. When the second handle rotates around the corresponding pivot axis, it has a first position away from the first handle and a second position close to the first handle. When the second handle rotates from the first position to the second position, the second handle drives the ratchet mechanism to make the second shear blade close to the first shear blade for engagement. When the first and second shear blades are in a fully engaged state and the second handle is in the first position, the second handle rotates from the first position to the second position to drive the ratchet mechanism to disengage from the teeth of the second shear blade, so that the second shear blade opens relative to the first shear blade and returns to its initial position. The first shear blade has a limiting member that limits the opening angle of the second shear blade relative to the first shear blade. The second shear blade is connected to a first return spring that provides elastic force for the second shear blade to open relative to the first shear blade.

2. The scissors with a ratchet structure according to claim 1, characterized in that, The ratchet mechanism includes a first gear disk, a second gear disk, a first pawl, a second pawl, a first elastic element, and a second elastic element. The first gear disk and the second gear disk are respectively disposed on the inner and outer sides of the second connecting end and are mounted on the first connecting shaft and fixedly connected to the first connecting shaft. The first gear disk engages with the teeth of the second shear blade. The first pawl engages with the first gear disk to push the first gear disk to rotate forward. The second pawl engages with the second gear disk to lock and restrict the second gear disk from rotating backward. The first elastic element provides elastic force for the first pawl to press against the first gear disk, and the second elastic element provides elastic force for the second pawl to press against the second gear disk.

3. The scissors with a ratchet structure according to claim 2, characterized in that, The first pawl engages with the first gear disk and also with the second gear disk.

4. The scissors with a ratchet structure according to claim 3, characterized in that, The first gear disk has a tooth-removing opening on its rim. When the second shear blade and the first shear blade are fully engaged, the tooth portion disengages from the first gear disk through the tooth-removing opening.

5. The scissors with a ratchet structure according to claim 4, characterized in that, The number of tooth removal openings is two, and the two tooth removal openings are symmetrically arranged on the rim of the first gear disk and located on the same diameter.

6. The scissors with a ratchet structure according to claim 5, characterized in that, The second handle has a groove at its front end, and the first gear disk and the second gear disk are located in the groove. The rear end of the first pawl is pivotally connected to the groove through the second connecting shaft. The front end of the first pawl abuts against the teeth of the first gear disk and the second gear disk so that when the second handle is rotated from the first position to the second position, the first pawl can push the first gear disk and the second gear disk to rotate forward. One end of the first elastic member abuts against the first pawl, and the other end of the first elastic member abuts against the groove wall.

7. The scissors with a ratchet structure according to claim 6, characterized in that, The upper end of the second pawl is pivotally connected to the outside of the first shear blade via a third connecting shaft. The lower end of the second pawl abuts against the teeth of the second gear disk to lock it when the second gear disk rotates backward. One end of the second elastic member abuts against the second pawl, and the other end of the second elastic member abuts against the first shear blade.

8. The scissors with a ratchet structure according to claim 1, characterized in that, The inner sides of the first and second shear blades are provided with recessed grooves at the positions of the corresponding pivot pins. The recessed grooves are circumferentially connected to positioning grooves. The first return spring is a ring-shaped torsion spring. The torsion spring is fitted onto the pivot pin and housed in the recessed groove. One end of the torsion spring is engaged in the positioning groove on the inner side of the first shear blade, and the other end is engaged in the positioning groove on the inner side of the second shear blade.

9. The scissors with a ratchet structure according to claim 1, characterized in that, The second shear blade has a clearance groove at the position corresponding to the limiting member. The depth of the clearance groove is set such that when the bottom of the clearance groove abuts against the limiting member, the toothed part can cooperate with the ratchet mechanism so that the ratchet mechanism can drive the second shear blade to rotate.

10. The scissors with a ratchet structure according to any one of claims 1-9, characterized in that, A second return spring is provided between the first handle and the second handle to provide elastic force for the second handle to open relative to the first handle. One end of the second return spring is connected and fixed to the inside of the first handle, and the other end is connected and fixed to the inside of the second handle.

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