Ceramic scissors with anti-fatigue disassembly and assembly structure and manufacturing process of ceramic scissors

Abstract

The invention belongs to the technical field of ceramic shears, and discloses a pair of ceramic shears with an anti-fatigue disassembly and assembly structure, which comprises a handle I, a handle II is arranged at the bottom of the handle I, and a convenient disassembly assembly is arranged between the handle I and the handle II; a first connecting piece is fixedly connected to the interior of the first handle, one end of the connecting shaft rod penetrates through the first connecting piece, and the first handle and the second handle are detachably connected by rotating the connecting shaft rod; and when the connecting shaft rod and the first connecting piece rotate relatively, the matching surfaces of the connecting shaft rod and the first connecting piece form a metal friction pair. Assembling and disassembling of the scissors can be rapidly completed through rotating operation without tools, meanwhile, the connecting shaft rod and the first connecting piece or the second connecting piece form a metal friction pair on the rotating contact face, the defects that a traditional plastic connecting piece is prone to abrasion and fatigue are overcome by means of the excellent abrasion-resistant characteristic of metal materials, and the service life of the scissors is prolonged. And the service life of the dismounting structure is longer, and convenience and long service life are both achieved.

Description

Technical Field

[0001] This invention belongs to the field of ceramic shearing technology, specifically a ceramic shear with an anti-fatigue disassembly and assembly structure and its manufacturing process. Background Technology

[0002] Ceramic shears are cutting tools with ceramic materials as the core cutting edge component. Their ceramic blades are typically made from high-strength ceramics such as zirconium oxide and alumina through sintering and precision grinding, offering advantages such as high hardness, strong wear resistance, good corrosion resistance, rust resistance, and minimal damage to the surface of the workpiece during cutting. These shears typically consist of a ceramic blade, connecting parts, and a plastic or metal handle. To facilitate cleaning, blade replacement, and adaptability to different usage scenarios, detachable ceramic shears have emerged on the market.

[0003] Currently, these detachable ceramic shears have two main structural shortcomings:

[0004] Firstly, the disassembly and assembly process often requires the use of specialized tools such as screwdrivers, which is cumbersome and cannot achieve true convenience.

[0005] Secondly, the connecting parts designed for frequent disassembly and assembly are not durable. After repeated use, they are prone to loosening or breaking due to wear, resulting in weak cutting and wobbling of the scissors, which seriously affects the service life and user experience.

[0006] Therefore, a ceramic shear with a fatigue-resistant disassembly and assembly structure and its manufacturing process are proposed to solve the above problems. Summary of the Invention

[0007] To address the problems mentioned in the background art, the present invention provides a ceramic shear with a fatigue-resistant disassembly and assembly structure, including a handle one, a handle two disposed at the bottom of the handle one, ceramic blades disposed inside both the handle one and the handle two, and a disassembly assembly disposed between the handle one and the handle two.

[0008] The easy-to-disassemble component includes a second connector fixedly connected inside the handle, and a connecting shaft rotatably disposed within the second connector;

[0009] The handle one is internally fixedly connected to a first connector, one end of the connecting shaft passes through the first connector, and the handle one and handle two are detachably connected by rotating the connecting shaft;

[0010] When the connecting shaft and the first connecting member rotate relative to each other, their mating surfaces form a metal friction pair.

[0011] In the above technical solution, preferably, the second connecting member is a first connecting plate, the first connecting plate has a first connecting hole, the ceramic blade inside the handle has a second connecting hole, one end of the connecting shaft passes through the second connecting hole and the first connecting hole in sequence, and the end of the connecting shaft that passes through is provided with a positioning part to form a snap-fit ​​fixation with the first connecting plate.

[0012] In the above technical solution, preferably, the first connecting member is a second connecting plate, the second connecting plate has a first alignment hole, the ceramic blade inside the handle has a second alignment hole, the other end of the connecting shaft passes through the second alignment hole and the first alignment hole in sequence, and the other end of the connecting shaft has a snap-fit ​​part to form a snap-fit ​​fixation with the second connecting plate.

[0013] In the above technical solution, preferably, the end of the connecting shaft that passes through the second connecting disc is provided with a radial protrusion, and the first alignment hole is provided with a notch. By rotating, the side of the radial protrusion and the side wall of the notch abut against each other in the first relative position to achieve axial locking, and in the second relative position they disengage to achieve axial separation. The surfaces of the radial protrusion and the notch that contact each other form a metal friction pair.

[0014] In the above technical solution, preferably, the handle one and handle two are made of plastic injection molding.

[0015] In the above technical solution, preferably, both the first connector and the second connector are made of metal.

[0016] In the above technical solution, preferably, the handle one and handle two are provided with openable and closable sealing caps at the positions where the two ends of the connecting shaft are respectively connected to the first connecting member and the second connecting member.

[0017] Through the above technical solution, the present invention provides a ceramic scissors that is easy to assemble and disassemble and has a fatigue-resistant connection structure. In some optional embodiments, to optimize the user experience, the ceramic scissors may also be equipped with a long-lasting self-locking mechanism. This self-locking mechanism includes a spring coil mounted on the handle, a rotating rod driven by the spring coil and a push plate, and a self-locking plate linked to the rotating rod. It can provide opening assistance during cutting to alleviate hand fatigue, and lock the scissors while releasing spring stress when idle, further optimizing the cutting effort and safe locking effect.

[0018] A manufacturing process for a ceramic shear with a fatigue-resistant disassembly structure includes the following steps:

[0019] S1: Place the ceramic blade and the corresponding first connector / second connector in a mold, and use injection molding process to encapsulate the ceramic blade and the first connector / second connector with plastic to form the handle one and handle two respectively;

[0020] S2: Pass the connecting shaft through the ceramic blade and the second connector inside the handle, and process the end of the connecting shaft to form a positioning part that is fixedly connected to the second connector;

[0021] S3: Pass the other end of the connecting shaft through the first connector inside the handle, connect the two by rotation, and form a metal friction pair at the mating surface of the connecting shaft and the first connector;

[0022] S4: On handle one and handle two, at the positions where the two ends of the connecting shaft are connected to the first connecting piece / second connecting piece, respectively, openable and closable sealing caps are installed to complete the assembly of the ceramic scissors.

[0023] In the above technical solution, preferably, in step S, a hydraulic extrusion process is used to plastically deform the end of the connecting shaft, thereby forming the positioning part and the second connecting piece to be clamped and fixed.

[0024] In the above technical solution, preferably, in step S, the axial locking of the two is achieved by rotating the first handle and the second handle relative to each other to a set angle.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] This invention provides a convenient assembly and disassembly system consisting of a connecting shaft, a first connector, and a second connector. Users can quickly assemble and disassemble scissors without tools by simply rotating the assembly and disassembly, greatly improving ease of use. At the same time, the connecting shaft and the first or second connector form a metal friction pair at the rotating contact surface. By utilizing the excellent wear resistance of metal materials, the defects of traditional plastic connectors, such as easy wear and fatigue, are overcome, resulting in a longer service life for the assembly and disassembly structure. This achieves a balance between convenience and long lifespan.

[0027] Furthermore, the end of the connecting shaft is provided with a radial protrusion, which can be locked or disengaged by rotating with the notch on the connector. This structural design gives the connection a clear mechanical positioning, a stable lock, and can effectively resist shearing forces during use, prevent accidental loosening, and improve the safety and reliability of the product.

[0028] Furthermore, the connection point on the handle is equipped with an openable and closable sealing cover, which can effectively prevent dust, water stains and debris from the cut material from entering the connection mechanism during daily use, keep the shaft and the moving parts of the connector clean, reduce abnormal wear, and further extend the maintenance cycle and service life.

[0029] The manufacturing process corresponding to this invention first uses injection molding to firmly bond the ceramic blade and the metal connector into the handle, then uses hydraulic extrusion and other processes to reliably form the shaft locking part, and finally uses rotational assembly to naturally form a metal friction pair. This process is conducive to large-scale production and ensures the consistency of product quality.

[0030] Furthermore, in some preferred embodiments of the present invention, by adding structures such as self-locking assistance, additional advantages such as shearing effort reduction, safe locking, and adjustable assistance can be obtained on the basis of convenient disassembly and assembly and long-term fatigue resistance. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the present invention;

[0032] Figure 2 For the present invention Figure 1 An explosion diagram;

[0033] Figure 3 This is a schematic diagram of the structure of the handle after rotation of the present invention;

[0034] Figure 4 This is a schematic diagram of the structure of the present invention after the handle is removed;

[0035] Figure 5 This is an exploded view of the detachable component of the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of the long-term self-locking assisted component of the present invention;

[0037] Figure 7 This is a cross-sectional schematic diagram of the sealing cap of the present invention;

[0038] Figure 8 This is a cross-sectional schematic diagram of the handle of the present invention;

[0039] Figure 9 This is a cross-sectional schematic diagram of the circular sleeve of the present invention;

[0040] Figure 10 This is a cross-sectional schematic diagram of the rotating cylinder of the present invention;

[0041] Figure 11 This is a schematic diagram of the card slot structure of the present invention;

[0042] Figure 12 This is a schematic diagram of the L-shaped plate after rotation according to the present invention;

[0043] Figure 13 This is a schematic diagram of the structure of the self-lubricating assist component of the present invention.

[0044] In the diagram: 1. Handle 1; 2. Handle 2; 3. Ceramic blade; 4. Easy-to-disassemble component; 41. First connector; 42. Connecting shaft; 43. Second connector; 44. Sealing cap; 5. Long-lasting power-assisted self-locking component; 51. Mounting slot; 52. Rotating rod; 53. Power-assisted push plate; 54. Round sleeve; 55. Spring coil; 56. Rotating slot; 57. Trapezoidal sleeve; 58. Elastic limiting component; 581. L-shaped groove; 582. L-shaped plate; 583. Spring 1; 59. Slot; 5 10. Self-locking plate; 6. Self-positioning adjustment component; 61. Rotating cylinder; 62. Top rod; 63. Hexagonal sleeve; 64. Hexagonal plate; 65. Spring II; 66. Arc plate; 67. Locking rod; 68. Circular groove; 7. Pointing groove; 8. Inclined groove; 9. Pad I; 10. Pad II; 11. Limiting groove; 12. Internal hex bolt; 13. Self-lubricating auxiliary component; 131. Support rod; 132. Self-lubricating cylinder; 133. Stainless steel cylinder; 134. External retaining spring; 14. Rubber pad. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Example 1, as Figures 1 to 5 As shown, the present invention provides a ceramic scissor with a fatigue-resistant disassembly and assembly structure, including a handle 1, a handle 2 at the bottom of the handle 1, ceramic blades 3 inside both the handle 1 and the handle 2, and a disassembly assembly 4 between the handle 1 and the handle 2.

[0047] The easy-to-disassemble component 4 includes a second connector 43 fixedly connected inside the handle 2, and a connecting shaft 42 rotatably disposed inside the second connector 43. With this arrangement, the connecting shaft 42 becomes a pivot connecting the two handles.

[0048] The handle 1 is internally fixedly connected to a first connector 41. One end of the connecting shaft 42 passes through the first connector 41, and the handle 1 and handle 2 are detachably connected by rotating the connecting shaft 42. This enables quick disassembly and assembly without tools, which is convenient for cleaning, maintenance or blade replacement.

[0049] When the connecting shaft 42 and the first connecting piece 41 rotate relative to each other, their mating surfaces form a metal friction pair;

[0050] This metal friction pair directly replaces the easily worn plastic or ordinary metal bushings in traditional scissors. By utilizing the wear-resistant properties of metal-to-metal contact, it solves the problems of fatigue and loosening of connection parts caused by frequent use and disassembly, thereby significantly extending the overall service life of the product.

[0051] Among them, handle 1 and handle 2 are made of plastic injection molding, with metal connectors and ceramic blades 3 embedded inside. This process makes the handle and functional components firmly combined, with an integrated shape and high production efficiency.

[0052] The second connector 43 is the first connecting plate, which has a first connecting hole. The ceramic blade 3 inside the handle 2 has a second connecting hole. One end of the connecting shaft 42 passes through the second connecting hole and the first connecting hole in sequence. The end of the connecting shaft 42 that passes through is provided with a positioning part that forms a snap-fit ​​and fixation with the first connecting plate.

[0053] Specifically, the positioning part at its through end is formed by plastic deformation (such as hydraulic extrusion), thereby forming a reliable snap-fit ​​fixation with the first connecting plate. This fixing method is strong and simple in process, ensuring that the connecting shaft 42 and the right handle assembly become a stable whole.

[0054] The first connector 41 is the second connector plate. The second connector plate has a first alignment hole. The ceramic blade 3 inside the handle 1 has a second alignment hole. The other end of the connecting shaft 42 passes through the second alignment hole and the first alignment hole in sequence. The other end of the connecting shaft 42 has a snap-fit ​​part that forms a snap-fit ​​fixation with the second connector plate. This design allows the handle to rotate flexibly around the connecting shaft, while the axial direction is reliably limited.

[0055] The connecting shaft 42 has a radial protrusion at one end that passes through the second connecting disc, and a notch is provided in the first alignment hole. By rotating, the side of the radial protrusion and the side wall of the notch abut against each other in the first relative position to achieve axial locking, and in the second relative position they disengage to achieve axial separation. The surfaces of the radial protrusion and the notch that are in contact with each other form a metal friction pair.

[0056] By rotating the two handles, the radially protruding side and the sidewall of the notch can be brought to a critical position: in the first relative position, the two abut against each other, generating an axial locking force to prevent the handles from loosening during use; in the second relative position, the two disengage from each other, allowing the connecting shaft to be pulled out axially to complete disassembly, and the metal friction pair ensures that the critical force-bearing surface can remain stable for a long time even in repeated locking and unlocking operations, with excellent fatigue resistance.

[0057] Both the first connector 41 and the second connector 43 are made of metal, providing the necessary material basis for the metal friction pairs mentioned above, and also ensuring a firm bond with the plastic during injection molding.

[0058] On handle 1 and handle 2, at the positions where the two ends of the connecting shaft 42 are respectively connected to the first connecting piece 41 and the second connecting piece 43, there is an openable sealing cover 44. The sealing cover 44 can effectively prevent dust, moisture and shearing debris from entering the precision connecting mechanism, avoid aggravated wear or jamming caused by contamination, and play a role in protecting the core structure and reducing the maintenance frequency.

[0059] The working principle and usage process of this embodiment are as follows:

[0060] When assembling the scissors, the user aligns handle 1 with handle 2, fixing the end of the connecting shaft 42 with the radial protrusion through the first alignment hole on the first connector 41 (i.e., the second connecting plate) inside handle 1. Then, the user rotates handle 1 or handle 2, causing the radial protrusion on the connecting shaft 42 to rotate to a first relative position with the notch in the first alignment hole. In this position, the side of the radial protrusion abuts against the side wall of the notch, generating an axial locking force, thereby connecting the two handles together and putting them into a usable state. This process requires no tools, achieving quick and convenient hand assembly.

[0061] During normal shearing operations, the user presses or releases handle 1 and handle 2, causing them to rotate relative to each other around the connecting shaft 42, thus engaging and disengaging the ceramic blade 3. Throughout the opening and closing process, the mating surfaces made of metal between the connecting shaft 42 and the first connecting piece 41, as well as between the radial protrusion and the notch, continuously function as a metal friction pair. This wear-resistant metal-to-metal fit effectively withstands the mechanical wear and shearing force caused by rotation, avoiding the fatigue, loosening, and aggravated wear problems that are easily caused by traditional plastics or ordinary structures. This ensures the stability and durability of the connection under long-term high-frequency use, achieving the core effect of fatigue resistance.

[0062] When cleaning or maintaining the blade is required, the user rotates handle 1 and handle 2 in the opposite direction, causing the radial protrusion on the connecting shaft 42 to rotate from the first relative position (locked position) of the notch to the second relative position (disengaged position). At this point, the radial protrusion disengages from the side wall of the notch, releasing the axial locking force. The user can then easily remove handle 1 along the axial direction of the connecting shaft 42 to complete disassembly. After disassembly, components such as the ceramic blade 3 can be cleaned. The openable and closable sealing cover 44 located at the connection effectively isolates impurities during daily use. It can be opened for operation during disassembly and maintenance, and closed after maintenance to resume its protective function. After maintenance, the user can quickly resume use by repeating the above assembly steps.

[0063] The manufacturing process of a ceramic shear with a fatigue-resistant disassembly structure according to Embodiment 1 includes the following steps:

[0064] S1: Place the ceramic blade 3 and the corresponding first connector 41 / second connector 43 in the mold, and use injection molding process to encapsulate the ceramic blade 3 and the first connector 41 / second connector 43 with plastic to form handle 1 and handle 2 respectively;

[0065] S2: Pass the connecting shaft 42 through the ceramic blade 3 and the second connector 43 inside the handle 2, and process the end of the connecting shaft 42 to form a positioning part that is fixedly connected to the second connector 43;

[0066] Specifically, in step S2, a hydraulic extrusion process is used to plastically deform the end of the connecting shaft 42, thereby forming a positioning part that is clamped and fixed to the second connecting piece 43;

[0067] S3: Pass the other end of the connecting shaft 42 through the first connector 41 inside the handle 1, connect the two by rotation, and form a metal friction pair at the mating surface of the connecting shaft 42 and the first connector 41.

[0068] Specifically, in step S3, the axial locking of the two handles is achieved by rotating handle 1 and handle 2 relative to each other to a set angle.

[0069] S4: On handle 1 and handle 2, at the positions where the two ends of the connecting shaft 42 are connected to the first connecting piece 41 / second connecting piece 43, openable and closable sealing caps 44 are respectively installed to complete the assembly of the ceramic scissors.

[0070] Example 2: Based on the fatigue-resistant disassembly and assembly structure provided in Example 1, this example further adds a long-term self-locking function.

[0071] The easy-to-disassemble component in Example 1 primarily addresses the issues of convenience and durability of the connection structure itself. However, during cutting operations, the two blades of the ceramic blade often experience significant resistance and require considerable effort to open, especially during continuous operation, which can easily lead to hand fatigue. Currently, although there are solutions that add a spring between the handles to provide opening assistance, these solutions have inherent drawbacks: the spring is always in a charged state, forcing the scissors to remain in an open position when not in use, posing a safety hazard; if forcibly closed and locked, the spring will remain in a compressed state for a long time, accelerating its elastic fatigue, shortening its service life, and making it difficult to achieve a stable and long-lasting assisting effect.

[0072] Therefore, this embodiment further utilizes a long-lasting self-locking component 5 to simultaneously address the labor-saving requirements of the shearing operation and the long-lasting durability and safe locking issues of the assist mechanism.

[0073] like Figures 6-13 Ceramic scissors also include:

[0074] Long-term assisted self-locking component 5 is set on handle 1 and is used for long-term assisted opening and locking of handle 2;

[0075] The long-lasting power-assisted self-locking component 5 includes a mounting groove 51 on the handle 1, a rotating rod 52 inside the mounting groove 51, a power-assisted push plate 53 fixedly connected to the rotating rod 52, a round sleeve 54 sleeved on the rotating rod 52, a spring coil 55 fixedly connected to the rotating rod 52, a rotating groove 56 on the handle 1, a trapezoidal sleeve 57 inside the rotating groove 56, the bottom end of the trapezoidal sleeve 57 passing through the handle 1 and fixedly connected to the round sleeve 54, an elastic limiting component 58 on the handle 1, a slot 59 on the handle 2, and a self-locking plate 510 located inside the slot 59 fixedly connected to the trapezoidal sleeve 57.

[0076] The self-positioning adjustment component 6 is located inside the circular sleeve 54 and is used to adjust the elasticity of the spring coil 55.

[0077] Specifically, the spring coil 55 is made of stainless steel; the surface of the trapezoidal sleeve 57 is in contact with the inner wall of the rotating groove 56, and the trapezoidal sleeve 57 can support and limit the circular sleeve 54 through the rotating groove 56, thereby improving the stability of the circular sleeve 54; the inner wall of the slot 59 is arc-shaped, which can ensure that the self-locking plate 510 can be smoothly locked into the slot 59 after rotation; the bottom of the rotating rod 52 is in contact with the bottom of the inner wall of the mounting groove 51, and the top of the push plate 53 is in contact with the bottom of the circular sleeve 54, ensuring that the push plate 53 will not wobble up and down.

[0078] like Figures 9 to 13 As shown, the elastic limiting member 58 includes an L-shaped groove 581 formed on the handle 1. An L-shaped plate 582 is slidably connected inside the L-shaped groove 581. A spring 583 is fixedly connected to one side of the L-shaped plate 582. One end of the spring 583 is fixedly connected inside the L-shaped groove 581. The top end of the L-shaped plate 582 extends to the top of the L-shaped groove 581.

[0079] Specifically, the L-shaped plate 582 is pressed and fixed by the spring 583, so that the L-shaped plate 582 can fix the position of the rotated self-locking plate 510. The ends of the self-locking plate 510 and the L-shaped plate 582 are both chamfered, which can ensure that the self-locking plate 510 can smoothly push the L-shaped plate 582 and rotate it to the designated position, thus improving the smoothness of locking and unlocking.

[0080] The self-positioning adjustment component 6 includes a rotating cylinder 61 disposed inside the circular sleeve 54, a top rod 62 fixedly connected to the rotating cylinder 61, a hexagonal sleeve 63 disposed inside the trapezoidal sleeve 57, the top end of the top rod 62 penetrating into the interior of the hexagonal sleeve 63 and fixedly connected to a hexagonal plate 64, the surface of the hexagonal plate 64 contacting the inner wall of the hexagonal sleeve 63, and a second spring 65 fixedly connected to the bottom of the hexagonal plate 64, the bottom end of the second spring 65 being fixedly connected to the interior of the hexagonal sleeve 63;

[0081] An arc-shaped plate 66 is hinged to the hexagonal sleeve 63 by a torsion spring hinge. Each of the four corners of the bottom of the hexagonal sleeve 63 is fixedly connected with a locking rod 67. Several circular grooves 68 are opened on the trapezoidal sleeve 57, and the bottom end of the locking rod 67 extends into the interior of the circular groove 68.

[0082] Specifically, both spring 583 and spring 65 are made of stainless steel. In use, by pulling the arc plate 66 upward, the arc plate 66 drives the hexagonal sleeve 63 to move upward, compressing spring 65. The hexagonal sleeve 63 drives the locking rod 67 to move upward. Then, the arc plate 66 is rotated, and the arc plate 66 drives the top rod 62 and the rotating cylinder 61 to rotate through the hexagonal sleeve 63 and the hexagonal plate 64. The rotating cylinder 61 further winds up the spring coil 55, restoring its initial elastic strength and avoiding ineffective assistance due to insufficient elasticity. Finally, the arc plate 66 is pushed downward, causing the locking rod 67 to engage with the circular groove 68, ensuring stable assistance effect. This eliminates the need for frequent component replacement, reduces operating costs, and the adjustment process is simple and the positioning is stable.

[0083] like Figure 9 As shown, the hexagonal sleeve 63 has two symmetrically arranged pointing grooves 7, and the top of the hexagonal sleeve 63 has an inclined groove 8, which is located at the bottom of the arc plate 66.

[0084] Specifically, the guide groove 7 can guide the rotation direction of the hexagonal sleeve 63 to avoid incorrect adjustment of the spring force of the mainspring 55; the inclined groove 8 provides space for the user to rotate the arc plate 66 to prevent the user from being unable to quickly open the arc plate 66.

[0085] like Figures 8 to 12 As shown, a pad 9 is fixedly connected to the top of the L-shaped plate 582, and the bottom of the pad 9 is in contact with the surface of the handle 1. A pad 2 10 is fixedly connected to the self-locking plate 510.

[0086] Specifically, pad 9 can seal the top of the L-shaped groove 581 and facilitate the user to quickly push the L-shaped plate 582; pad 10 can reinforce the self-locking plate 510 and facilitate the user to push the self-locking plate 510 to reset.

[0087] like Figures 9 to 10As shown, a limiting groove 11 is provided inside the rotating cylinder 61, the top end of the rotating rod 52 extends into the limiting groove 11, and an internal hex bolt 12 is provided at the bottom of the handle 1. The top end of the internal hex bolt 12 passes through the handle 1 and is threaded into the inside of the rotating rod 52.

[0088] Specifically, the limiting groove 11 can limit the rotation rod 52 to ensure the coaxiality of the rotation rod 52 when it rotates, and avoid the transmission jamming of the power push plate 53 due to eccentricity. The internal hex bolt 12 limits the bottom of the rotation rod 52, which further improves the stability of the rotation rod 52 and the sleeve 54.

[0089] like Figure 13 As shown, a self-lubricating auxiliary component 13 is provided on one side of the push plate 53. The self-lubricating auxiliary component 13 includes a support rod 131 fixedly connected to one side of the push plate 53, a self-lubricating cylinder 132 sleeved on the support rod 131, a stainless steel cylinder 133 fixedly connected to the self-lubricating cylinder, and an outer retaining spring 134 sleeved on the support rod 131. One side of the outer retaining spring 134 is in contact with the surface of the self-lubricating cylinder 132.

[0090] Specifically, the push plate 53 drives the self-lubricating cylinder 132 and the stainless steel cylinder 133 to move synchronously through the support rod 131. The stainless steel cylinder 133 pushes the handle 2, while the self-lubricating cylinder 132 can rotate on the support rod 131. Its self-lubricating properties greatly reduce the coefficient of friction, ensuring the high efficiency of the power transmission of the spring coil 55. The outer retaining spring 134 can axially limit the self-lubricating cylinder 132, ensuring that it is always in a stable working position, achieving a long-term self-lubricating effect, and further improving the reliability of the power assist structure.

[0091] like Figure 11 As shown, a rubber pad 14 is fixedly connected inside the slot 59, and one side of the rubber pad 14 is in contact with the surface of the self-locking plate 510.

[0092] Specifically, the rubber pad 14 can effectively buffer the impact force when the self-locking plate 510 is inserted into the slot 59, reduce rigid wear between metal parts, and extend the service life of the self-locking plate 510 and the slot 59.

[0093] Through the above structural design, this embodiment achieves the following beneficial effects:

[0094] By employing a long-lasting self-locking mechanism, when the assist is activated, the spring releases its elasticity to push the rotating rod and the assist push plate, effectively reducing the resistance to opening the ceramic blade and solving the hand fatigue problem caused by continuous operation. When idle, handle one and handle two are positioned in relation to the assist push plate, and the rotating rod, with the reverse elasticity of the spring, drives the sleeve and self-locking plate into the slot, fixing handle one and handle two. This releases the spring, preventing it from being in a high-compression state and avoiding the elastic fatigue defects caused by the long-term storage of traditional springs. This significantly extends the service life of the assist structure, solving the pain point of difficult opening and eliminating the safety hazard of exposed blade edges.

[0095] Furthermore, after repeated release and recovery of spring force over a long period of time, the spring is prone to fatigue due to metal fatigue, resulting in reduced elasticity and insufficient assistance, which affects the user experience. However, the design of the rotating cylinder, hexagonal sleeve and hexagonal plate in the self-positioning adjustment component can further wind up the spring and restore its initial elasticity, avoiding ineffective assistance due to insufficient elasticity. The design of multiple circular grooves can precisely control the winding amplitude according to actual needs, ensuring stable assistance effect, eliminating the need for frequent component replacement, reducing usage costs, and the adjustment process is simple to operate and provides stable positioning.

[0096] Furthermore, during the repeated pushing of handle two by the rotating rod, the power-assisting push plate generates continuous rigid friction with handle two. Long-term use can easily cause wear on the inner wall of both the power-assisting push plate and handle two, resulting in greater resistance and affecting the assisting effect. However, through the structural design of the support rod, self-lubricating cylinder, and stainless steel cylinder in the self-lubricating assisting component, the power-assisting push plate drives the self-lubricating cylinder and stainless steel cylinder to move synchronously via the support rod. The stainless steel cylinder pushes handle two, while the self-lubricating cylinder can rotate on the support rod. Utilizing its self-lubricating properties, it significantly reduces the coefficient of friction, ensuring the high efficiency of the spring-loaded power transmission. The external retaining spring provides axial restraint for the self-lubricating cylinder, ensuring it remains in a stable working position and achieving long-term self-lubrication, further improving the reliability of the assisting structure.

[0097] The working principle and usage process of this embodiment are as follows:

[0098] When in use, push the pad 2 10 manually. The pad 2 10 drives the self-locking plate 510 to push the L-shaped plate 582. After reaching the appropriate position, the spring 1 583 will drive the L-shaped plate 582 to limit the self-locking plate 510. On the other hand, the self-locking plate 510 drives the rotating cylinder 61 to rotate through the trapezoidal sleeve 57 and the circular sleeve 54. The rotating cylinder 61 performs a winding operation on the spring coil 55 to complete the spring storage.

[0099] When pressing handle 1 and handle 2 to cut an object, the spring 55 releases the stored elastic force, pushing the rotating rod 52 to rotate. The rotating rod 52 drives the power push plate 53 to move synchronously. The power push plate 53 pushes handle 2 through the stainless steel cylinder 133, which in turn drives the two ceramic blades 3 to open automatically, realizing power cutting and effectively reducing hand fatigue during continuous operation.

[0100] After the operation is completed, manually close handle 1 and handle 2 to the initial position, then push pad 9. Pad 9 will move L-shaped plate 582, and the spring coil 55 will release its elasticity and drive the rotating cylinder 61 and the push rod 62 to rotate. The push rod 62 drives the locking rod 67 and trapezoidal sleeve 57 to rotate through hexagonal plate 64 and hexagonal sleeve 63. The trapezoidal sleeve 57 will drive the self-locking locking plate 510 to re-lock into the slot 59, thus completing the self-locking fixation.

[0101] The manufacturing process of this embodiment, based on the manufacturing process steps described in Embodiment 1, further includes the following steps:

[0102] S5. Complete the fixed assembly of the spring coil 55 and the rotating rod 52 in the long-term power-assisted self-locking component 5, and complete the assembly of the self-positioning adjustment component 6.

[0103] Specifically, components such as the rotating rod 52 and the circular sleeve 54 are prepared, as well as accessories such as the spring coil 55, spring 1 583, spring 2 65, and rubber pad 14. The auxiliary push plate 53 and the spring coil 55 are fixed on the rotating rod 52. The circular sleeve 54 is fixedly connected to the trapezoidal sleeve 57 and the self-locking plate 510. The pointing groove 7 and the oblique groove 8 are machined on the hexagonal sleeve 63. The arc plate 66, the locking rod 67 and the spring 2 65 are assembled to complete the assembly of the self-positioning adjustment component 6.

[0104] S6. Handle 1 and Handle 2 are simultaneously formed during the injection molding process to form the required mounting groove 51, rotating groove 56, L-shaped groove 581 and retaining groove 59.

[0105] Specifically, the mounting groove 51, the rotating groove 56 and the L-shaped groove 581 are injection molded on the handle 1, and the slot 59 is machined on the handle 2 and a rubber pad 14 is embedded therein;

[0106] S7. Insert the assembled long-lasting power-assisted self-locking component 5 into the mounting slot 51 of handle 1; assemble the elastic limiting component 58 in the L-shaped slot 581.

[0107] Specifically, the long-lasting self-locking component 5 is installed into the mounting slot 51 of the handle 1, and an L-shaped plate 582 and a spring 583 are installed in the L-shaped slot 581 to form an elastic limiting component 58.

[0108] S8. Use the easy-to-disassemble component 4 to detachably hinge the handle 1 and handle 2, and ensure that the self-locking plate 510 can be inserted into the corresponding slot 59 to complete the assembly.

[0109] Specifically, one end of the connecting shaft 42 is passed through the second connector 43 and the ceramic blade 3 in sequence. The bottom of the connecting shaft 42 is deformed by a screw hydraulic press to fix the second connector 43 and the ceramic blade 3. Then, the other end of the connecting shaft 42 is passed through the first connector 41. The handle 2 is rotated to a specific angle to complete the assembly and disassembly. It is ensured that the self-locking plate 510 can be inserted into the corresponding slot 59 to complete the assembly.

[0110] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0111] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ceramic shear with a fatigue-resistant disassembly and assembly structure, comprising a first handle (1), wherein a second handle (2) is provided at the bottom of the first handle (1), characterized in that, Both handle one (1) and handle two (2) are provided with ceramic blades (3), and a disassembly assembly (4) is provided between handle one (1) and handle two (2). The detachable assembly (4) includes a second connector (43) fixedly connected inside the handle (2), and a connecting shaft (42) rotatably disposed inside the second connector (43). The handle one (1) is fixedly connected to a first connector (41), one end of the connecting shaft (42) passes through the first connector (41), and the handle one (1) and handle two (2) are detachably connected by rotating the connecting shaft (42). When the connecting shaft (42) and the first connecting member (41) rotate relative to each other, their mating surfaces form a metal friction pair.

2. The ceramic shear with an anti-fatigue disassembly structure according to claim 1, characterized in that: The second connector (43) is a first connecting plate. A first connecting hole is provided on the first connecting plate. A second connecting hole is provided on the ceramic blade (3) inside the handle (2). One end of the connecting shaft (42) passes through the second connecting hole and the first connecting hole in sequence. The end of the connecting shaft (42) that passes through is provided with a positioning part that forms a snap-fit ​​fixation with the first connecting plate.

3. The ceramic shear with an anti-fatigue disassembly structure according to claim 2, characterized in that: The first connector (41) is a second connecting plate. The second connecting plate has a first alignment hole. The ceramic blade (3) inside the handle (1) has a second alignment hole. The other end of the connecting shaft (42) passes through the second alignment hole and the first alignment hole in sequence. The other end of the connecting shaft (42) has a snap-fit ​​part that forms a snap-fit ​​fixation with the second connecting plate.

4. The ceramic shear with an anti-fatigue disassembly structure according to claim 3, characterized in that: The connecting shaft (42) has a radial protrusion at one end that passes through the second connecting disc. The first alignment hole has a notch. By rotating, the side of the radial protrusion and the side wall of the notch abut against each other in the first relative position to achieve axial locking. They disengage from each other in the second relative position to achieve axial separation. The surfaces of the radial protrusion and the notch that are in contact with each other form a metal friction pair.

5. The ceramic shear with an anti-fatigue disassembly structure according to claim 1, characterized in that: The handle one (1) and handle two (2) are made of plastic injection molding.

6. The ceramic shear with an anti-fatigue disassembly structure according to claim 1, characterized in that: Both the first connector (41) and the second connector (43) are made of metal.

7. The ceramic shear with an anti-fatigue disassembly structure according to claim 1, characterized in that: On the handle one (1) and handle two (2), there are openable and closable sealing covers (44) at the positions where the two ends of the connecting shaft (42) are respectively connected to the first connecting member (41) and the second connecting member (43).

8. The manufacturing process of a ceramic shear with an anti-fatigue disassembly structure according to any one of claims 1-7, characterized in that: Includes the following steps: S1: Place the ceramic blade (3) and the corresponding first connector (41) / second connector (43) in the mold, and use injection molding process to make plastic wrap the ceramic blade (3) and the first connector (41) / second connector (43) to form the handle one (1) and handle two (2) respectively. S2: Pass the connecting shaft (42) through the ceramic blade (3) and the second connector (43) inside the handle (2), and process the end of the connecting shaft (42) to form a positioning part that is fixedly connected to the second connector (43); S3: Pass the other end of the connecting shaft (42) through the first connector (41) inside the handle (1), connect the two by rotation, and form a metal friction pair at the mating surface of the connecting shaft (42) and the first connector (41); S4: On the handle one (1) and handle two (2), at the positions where the two ends of the connecting shaft (42) are connected to the first connecting piece (41) / the second connecting piece (43), openable and closable sealing caps (44) are respectively installed to complete the assembly of the ceramic scissors.

9. The manufacturing process of a ceramic shear with an anti-fatigue disassembly structure according to claim 8, characterized in that: In step S2, a hydraulic extrusion process is used to plastically deform the end of the connecting shaft (42), thereby forming the positioning part and the second connecting piece (43) to be clamped and fixed.

10. The manufacturing process of a ceramic shear with an anti-fatigue disassembly structure according to claim 8, characterized in that: In step S3, the axial locking of the two handles is achieved by rotating the first handle (1) and the second handle (2) relative to each other to a set angle.

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