Multifunctional scissors
The gear sleeve structure design of the multi-functional scissors enables the switching between ordinary scissors and unidirectional cutting, solving the problem of the single use of existing scissors and improving cutting force and adaptability.
Patent Information
- Application Number
- CN202423304620.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-31
AI Technical Summary
The existing scissors cannot adjust the cutting level according to user needs, resulting in limited usability and inability to meet various cutting requirements.
A multi-functional pair of scissors was designed. Through a gear sleeve structure between the fixed handle and the movable handle, it can switch between ordinary scissors and unidirectional cutting. The gear-based force-saving structure improves the cutting force and adapts to different cutting needs.
It allows for adjustment of cutting force and method to adapt to the cutting needs of different materials, especially for efficient cutting of hard materials, and is easy to operate.
Smart Images
Figure CN223834565U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a pair of scissors, specifically a multifunctional pair of scissors. Background Technology
[0002] Scissors and pliers are commonly used cutting tools. Current scissors generally consist of a scissor handle and opposing blades at one end of the handle. The longer the grip, the less effort is required to use the scissors. However, for ease of use, they should not be too long, thus limiting their use. The aforementioned scissors do not allow for adjustment of cutting levels according to user needs, thus failing to better meet people's cutting requirements. Utility Model Content
[0003] To address the aforementioned problems, the purpose of this utility model is to provide a multifunctional pair of scissors.
[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A multifunctional scissors, comprising a fixed handle and a movable handle. The front end of the fixed handle has an installation opening penetrating the fixed handle. A cutting blade is fixed to the front side of the installation opening via a blade shaft penetrating both side walls of the installation opening. The movable handle is rotatably fixed to the rear side of the installation opening via a fixed shaft, and the cutting blade is fixed to one end of the blade shaft within the installation opening. A fixed gear, rotating synchronously with the blade shaft, is fixed to the middle part of the blade shaft. A freely rotatable sector gear is provided on the blade shaft at one end of the fixed gear, and a freely rotatable ratchet gear is provided on the blade shaft at the other end of the fixed gear. A first connecting gear with a diameter smaller than the sector gear is provided on the side of the sector gear closest to the fixed gear. The ratchet gear meshes with the drive teeth on one side of the fixed end of the movable handle. A second connecting gear with a smaller diameter than the ratchet gear is provided on the side of the ratchet gear near the fixed gear. The fixed gear has the same diameter and teeth as the first and second connecting gears. The ratchet pawl on the other side of the fixed end of the movable handle meshes with the ratchet gear. The other end of the ratchet pawl is rotatably connected to the fixed end of the movable handle via a rotating shaft. An elastic structure is provided at the ratchet pawl to press the ratchet pawl onto the ratchet gear. A sliding toothed sleeve is fitted on the fixed gear. The thickness of the toothed sleeve is less than the thickness of the fixed gear. A limiting pawl that is tightly attached to the ratchet gear is rotatably provided in the mounting opening below the ratchet pawl. The limiting pawl is also pressed onto the ratchet gear by the elastic structure.
[0005] Furthermore, a return spring for opening is provided between the fixed handle and the movable handle.
[0006] Furthermore, the outer end of the cutter shaft is elastically connected to the outer wall of the fixed handle via a spring.
[0007] Furthermore, the fixed handle below the blade has a long, narrow blade opening.
[0008] Furthermore, the fixed handle, movable handle, cutter, cutter shaft, fixed gear, sector gear, ratchet gear, and gear sleeve are all made of stainless steel.
[0009] When used as ordinary scissors, the toothed sleeve is fitted onto the fixed gear and the first connecting gear, creating a linkage between them. This allows the drive teeth to synchronously rotate the sector gear and the fixed gear when the handle is opened and closed, thus causing the cutter to open and close synchronously, similar to current scissor usage. When using the cutter for unidirectional cutting, the toothed sleeve is fitted onto the fixed gear and the second connecting gear, creating a linkage between them. Opening and closing the handle causes the ratchet pawl to close the cutter for cutting. When the handle is open, the ratchet gear, ratchet pawl, and limit pawl form a unidirectional rotating ratchet structure. Continuously pressing and closing the handle continuously causes the cutter to close for cutting, which is beneficial for cutting harder items. Furthermore, since the diameter of the second connecting gear is smaller than that of the ratchet gear, it is equivalent to driving the cutter to close through a larger diameter gear, thus creating a gear-based force-saving structure that effectively increases the cutting force of the cutter for better cutting.
[0010] With the above settings, this utility model can switch the cutting force and method, and can be adjusted by sliding the toothed sleeve. The adjustment method is simple and quick. It can not only be used as ordinary scissors, but also form a unidirectional cutting labor-saving structure, which can better meet people's cutting needs. Attached Figure Description
[0011] Figure 1 This is a three-dimensional structural schematic diagram of Embodiment 1 of this utility model;
[0012] Figure 2 This is a three-dimensional structural diagram of the disassembled movable handle portion of Embodiment 1 of this utility model;
[0013] Figure 3 This is a schematic diagram of the disassembled main view of the movable handle portion of Embodiment 1 of this utility model;
[0014] Figure 4 This is a schematic diagram of the ratchet gear portion in Embodiment 1 of this utility model;
[0015] Figure 5 This is a three-dimensional structural schematic diagram of the transmission relationship between the end face gear, the swing gear, and the ratchet gear in Embodiment 2 of this utility model;
[0016] Figure 6 This is a schematic diagram of the front view structure of the transmission relationship between the end face gear, the swing gear, and the ratchet gear in Embodiment 2 of this utility model. Detailed Implementation
[0017] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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 element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0019] The embodiments are described in detail below with reference to the accompanying drawings:
[0020] Example 1
[0021] like Figure 1-4As shown, a multifunctional pair of scissors includes a fixed handle 1 and a movable handle 2. The fixed handle 1 has a mounting opening 3 extending through its front end. A cutting blade 5 is fixed to the front side of the mounting opening 3 via a blade shaft 4 extending through both side walls of the mounting opening 3. The movable handle 2 is rotatably fixed to the rear side of the mounting opening 3 via a fixed shaft, and the cutting blade 5 is fixed to one end of the blade shaft 4 within the mounting opening 3. A fixed gear 6, rotating synchronously with the blade shaft 4, is fixed to the middle portion of the blade shaft 4. A freely rotatable sector gear 7 is mounted on the blade shaft 4 at one end of the fixed gear 6, and a freely rotatable ratchet gear 8 is mounted on the blade shaft 4 at the other end of the fixed gear 6. A first connecting gear 9, with a diameter smaller than the sector gear 7, is located on the side of the sector gear 7 closest to the fixed gear 6. The sector gear 7 is connected to the movable handle 2 at the rotating fixed end. The drive gear 10 meshes with the ratchet gear 8. A second connecting gear 11 with a smaller diameter than the ratchet gear 8 is provided on the side of the ratchet gear 8 near the fixed gear 6. The fixed gear 6 has the same diameter and teeth as the first connecting gear 9 and the second connecting gear 11. The ratchet pawl 12 on the other side of the rotating fixed end of the movable handle 2 meshes with the ratchet gear 8. The other end of the ratchet pawl 12 is rotatably connected to the rotating fixed end of the movable handle 2 through a rotating shaft. An elastic structure is provided at the ratchet pawl 12 to press the ratchet pawl 12 onto the ratchet gear 8. A sliding toothed sleeve 13 is fitted on the fixed gear 6. The thickness of the toothed sleeve 13 is less than the thickness of the fixed gear 6. A limiting pawl 14 that is tightly attached to the ratchet gear 8 is rotatably provided in the mounting opening 3 below the ratchet pawl 12. The limiting pawl 14 is also pressed onto the ratchet gear 8 through an elastic structure.
[0022] In addition, to facilitate the overall structure's springback, such as the spring-return structure currently used in scissors and pliers, a return spring for spreading is provided between the fixed handle 1 and the movable handle 2. The outer end of the blade shaft 4 is elastically connected to the outer side wall of the fixed handle 1 through the springback spring. Below the blade of the cutter 5, the fixed handle 1 has a long strip-shaped blade outlet. The fixed handle 1, movable handle 2, cutter 5, blade shaft 4, fixed gear 6, sector gear 7, ratchet gear 8, and gear sleeve 13 are all made of stainless steel.
[0023] The working principle of this embodiment is as follows: When used as ordinary scissors, the toothed sleeve 13 is fitted onto the fixed gear 6 and the first connecting gear 9, making the fixed gear 6 and the first connecting gear 9 linked. Thus, when opening and closing the movable handle 2, the drive gear 10 synchronously drives the sector gear 7 and the fixed gear 6 to rotate, thereby driving the cutter 5 to open and close synchronously, similar to the current method of using scissors. When using the cutter 5 for unidirectional cutting, the toothed sleeve 13 is fitted onto the fixed gear 6 and the second connecting gear 11, making the fixed gear 6 and the second connecting gear 11 linked. Thus, when opening and closing the movable handle 2, the drive gear 10 drives the first connecting gear 9 to rotate freely, without affecting the opening and closing of the cutter 5. At this time, if... Figure 4When the movable handle 2 is closed, it is equivalent to the bottom of the movable handle 2 swinging to the left, thereby driving the ratchet pawl 12 to move to the right, and then pushing the ratchet gear 8 to rotate outward counterclockwise, so that the cutter 5 closes for cutting. When the movable handle 2 is open, the ratchet gear 8, ratchet pawl 12, and limiting pawl 14 (the teeth of the ratchet pawl 12 and the limiting pawl 14 are pressed on the ratchet gear 8 by springs, etc., such as the current ratchet structure using a spring-loaded structure) form a unidirectional rotating ratchet structure. In this way, by continuously pressing and closing the movable handle 2, the cutter 5 can be continuously closed for cutting, which is beneficial for cutting relatively hard items. Moreover, the movable handle 2 drives the ratchet gear 8 to rotate. Since the diameter of the second connecting gear 11 is smaller than the diameter of the ratchet gear 8, it is equivalent to driving the cutter 5 to close through a larger diameter gear. Therefore, a gear-based force-saving structure is also formed, which can effectively improve the cutting force of the cutter 5 and make it better for cutting.
[0024] Example 2
[0025] A multifunctional pair of scissors differs from Embodiment 1 in that: a face gear 15 is used instead of a fixed gear 6, both ends of the face gear 15 are provided with face teeth 17, a swing gear 16 is used instead of a sector gear 7, a ratchet gear 8 is provided with face teeth 17 on one side instead of a second connecting gear 11, and a swing gear 16 is also provided with face teeth 17 on one side instead of a first connecting gear 9.
[0026] The working principle of this embodiment is the same as that of embodiment 1, except that the end face gear 15 replaces the fixed gear 6. In this way, the end face gear 15 can mesh with the swing gear 16 through the end face teeth 17 at both ends, and thus be used as ordinary scissors. When the end face gear 15 and the ratchet gear 8 are meshed through the end face teeth 17 by sliding along the blade shaft 4, the ratchet gear 8 can be driven to rotate by the movable handle 2, so that the cutter 5 can be used to cut in one direction. That is, the difference between this embodiment and embodiment 1 is that the end face gear structure (end face teeth 17) is used to replace the tooth sleeve 13 structure.
[0027] This invention can be used for cutting materials such as plant branches, steel wires, wires, and even boards.
[0028] Of course, the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A multifunctional pair of scissors, comprising a fixed handle (1) and a movable handle (2), characterized in that: The front end of the fixed handle (1) is provided with an installation opening (3) that passes through the fixed handle (1). A cutter (5) is fixed on the front side of the installation opening (3) through a cutter shaft (4) that passes through the side walls of the installation opening (3). A movable handle (2) is fixed on the rear side of the installation opening (3) through a fixed shaft. The cutter (5) is fixed at one end of the cutter shaft (4) inside the installation opening (3). A fixed gear (6) that rotates synchronously with the cutter shaft (4) is fixed in the middle part of the cutter shaft (4). A freely rotatable sector gear (7) is provided on the cutter shaft (4) at one end of the fixed gear (6). A freely rotatable ratchet gear (8) is provided on the cutter shaft (4) at the other end of the fixed gear (6). A first connecting gear (9) with a diameter smaller than that of the sector gear (7) is provided on the side of the sector gear (7) close to the fixed gear (6). The sector gear (7) meshes with the drive gear (10) on the side of the rotating fixed end of the movable handle (2). A second connecting gear (11) with a smaller diameter than the ratchet gear (8) is provided on the side of the gear (8) close to the fixed gear (6). The fixed gear (6) has the same diameter and teeth as the first connecting gear (9) and the second connecting gear (11). The ratchet pawl (12) on the other side of the rotating fixed end of the movable handle (2) meshes with the ratchet gear (8). The other end of the ratchet pawl (12) is rotatably connected to the rotating fixed end of the movable handle (2) through a rotating shaft. An elastic structure for pressing the ratchet pawl (12) onto the ratchet gear (8) is provided at the ratchet pawl (12). A sliding toothed sleeve (13) is fitted on the fixed gear (6). The thickness of the toothed sleeve (13) is less than the thickness of the fixed gear (6). A limiting pawl (14) that is close to the ratchet gear (8) is rotatably provided in the mounting opening (3) below the ratchet pawl (12). The limiting pawl (14) is also pressed onto the ratchet gear (8) through an elastic structure.
2. The multifunctional scissors according to claim 1, characterized in that: A return spring for opening is provided between the fixed handle (1) and the movable handle (2).
3. The multifunctional scissors according to claim 1, characterized in that: The outer end of the cutter shaft (4) is elastically connected to the outer wall of the fixed handle (1) through a spring.
4. A multifunctional pair of scissors according to claim 1, characterized in that: The cutter (5) has a handle (1) fixed below the blade and has a long strip-shaped blade through-hole.
5. A multifunctional pair of scissors according to claim 1, characterized in that: The fixed handle (1), movable handle (2), cutter (5), cutter shaft (4), fixed gear (6), sector gear (7), ratchet gear (8) and gear sleeve (13) are made of stainless steel.
6. A multifunctional pair of scissors according to claim 1, characterized in that: A face gear (15) is used instead of a fixed gear (6). Both ends of the face gear (15) are provided with face teeth (17). A swing gear (16) is used instead of a sector gear (7). A ratchet gear (8) is provided with face teeth (17) on one side instead of a second connecting gear (11). A swing gear (16) is also provided with face teeth (17) on one side instead of a first connecting gear (9).