Non-destructive jade bead inlaying structure

Abstract

The utility model discloses a non-destructive jade bead inlaying structure which comprises metal bracket bodies (1) which are symmetrically arranged up and down, the metal bracket bodies are made of precious metal or titanium alloy materials, and the inner walls of the metal bracket bodies are provided with arc-shaped clamping grooves (3) matched with the radians of the outer surfaces of jade beads (2). And the arc-shaped clamping groove (3) longitudinally extends along the bracket body (1) and forms a closed annular structure. According to the utility model, the metal bracket structure which is symmetrical up and down is combined with the design of the elastic buckle assembly and the hollowed-out window, so that the universal adaptation within the diameter range of 8-20mm is realized on the premise of avoiding drilling holes in the jade. The structure adopts a memory metal and spring composite elastic system, and is matched with a silica gel liner buffer layer, so that the fixing strength is ensured, and the jade surface is prevented from being abraded. The hollowed-out window is designed by adopting a geometric optimization algorithm, so that the exposure rate of the jade surface reaches more than 60% while enough supporting strength is provided, and the double effects of protection and display are realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of jewelry inlaying, and particularly relates to a non-destructive jade bead inlaying structure. BACKGROUND

[0002] In the existing jade inlaying technology, the traditional process adopts the punching rope or metal claw inlaying method to fix the jade. The punching process directly destroys the natural structure of the jade, reducing its collection value. Although the metal claw inlaying can reduce damage, the claw part usually blocks an area of more than 40%, affecting the complete display of the surface of the jade. The buckle type inlaying structure appeared in recent years has problems such as narrow adaptation range and insufficient fixing stability.

[0003] In view of the above defects, the utility model provides an innovative solution: through the upper and lower symmetrical metal bracket structure, combined with the elastic buckle assembly and the hollow window design, the universality adaptation of 8-20mm diameter range is realized under the premise of avoiding the punching of the jade. The structure adopts a memory metal and spring composite elastic system, cooperates with a silica gel gasket buffer layer, ensures the fixing strength and prevents the surface of the jade from being worn. The hollow window is designed by using a geometric optimization algorithm, ensures that the exposure rate of the surface of the jade is more than 60% while providing sufficient support strength, realizes the double effect of protection and display. UTILITY MODEL CONTENTS

[0004] The utility model aims at: in view of the above-mentioned problems, a non-destructive jade bead inlaying structure is provided, which can avoid the punching of the jade, maintain the original integrity of the jade, and realize the full coverage of the 8-20mm diameter jade beads.

[0005] The technical scheme of the utility model is as follows:

[0006] The inlaying structure of the utility model is composed of two pieces of mirror-symmetrical brackets, is precisely processed by using pure gold, K gold or TC4 titanium alloy material, the inner wall is provided with an arc-shaped clamping groove matched with the outer surface of the jade, the radian tolerance is controlled within ±0.02mm, the uniform force of the jade is ensured, the bracket forms a complete ring after being closed, and the initial pre-tightening force is generated through the elastic deformation of the material.

[0007] Further, the bracket surface adopts a geometric hollow structure designed by using parameters, and the window area ratio is 60%-65%. A hexagonal honeycomb topology structure is adopted, and the safety factor of the maximum stress point is greater than or equal to 2.5 through finite element optimization. The R0.3mm arc-shaped transition is arranged at the window edge, and the contact stress when the jade is clamped is effectively dispersed.

[0008] Further, the buckle is composed of a Ni-Ti memory alloy clamping arm and a 304 stainless steel spring to form a double elastic system. The working section of the clamping arm is in the shape of a gradually changing parabola, and the free end is only 0.3 mm thick, ensuring flexible wrapping of the jade with a diameter of 8-20 mm. The spring adopts a variable pitch design and provides a constant elastic force of 45±5 N when compressed by 3 mm.

[0009] Further, a replaceable silica gel pad is arranged on the inner side of the clamping arm and is formed by a medical-grade liquid silicone injection molding process. The surface is laser etched with diamond-shaped anti-slip patterns with a depth of 0.1 mm, and the friction coefficient reaches 0.85. The pad has a compression permanent set of less than 3% in 24 hours, effectively protecting the surface of the jade from mechanical damage.

[0010] In addition, the connecting ring is integrally formed with the bracket body through a cold forging process, and the ring cross section adopts a composite structure of an outer circle and an inner square. The outer circle has a diameter of φ3 mm, the inner square has a side length of 2.5 mm, three reinforcing ribs are arranged at the root to connect with the bracket body, and the bending strength is increased by 30%. The ring axis is perpendicular to the bracket axis at 90°, ensuring that the force direction of the chain is consistent with the gravity direction of the jade when worn.

[0011] Further, the upper and lower brackets are connected through the cylindrical hinge holes arranged on both sides, and a φ1.5 mm pin shaft is used to realize opening and closing. A spiral guide groove is arranged on the inner wall of the hinge hole, which cooperates with the lubrication groove on the surface of the pin shaft to realize a swing damping of ≤5° during opening and closing, and the operating force is controlled in the range of 3-8 N.

[0012] Further, a 15° guide slope is arranged at the free end of the clamping arm, forming a 30° angle with the loading direction of the jade. An M1.2 adjusting screw is arranged at the root, which realizes precise fitting of jade with different diameters by changing the screw-in depth and adjusting the clamping force.

[0013] In addition, a radial array of elastic protrusions is arranged on the inner wall of the arc-shaped clamping groove, which is formed by photolithography micro-machining technology. The protrusions have a height of 0.3 mm, a width of 0.2 mm, and a spacing of 1 mm, which can produce local elastic deformation when the jade is clamped, improving the radial positioning accuracy.

[0014] In addition, a anti-rotation groove is arranged in the inner square hole of the hidden connecting ring, which adopts an equilateral triangular cross section design and cooperates with the wedge-shaped protrusion of the standard chain buckle to realize circumferential positioning. The outer circle surface is treated with CD pattern anti-slip, and the friction coefficient is improved by 40%.

[0015] Further, a base of deep and shallow interlaced chiseled lines is arranged on the surface of the bracket, the deep lines with a width of 0.3 mm and a width of 0.5 mm are used for traditional manual chiseling, and the shallow lines with a width of 0.1 mm and a width of 1.0 mm are suitable for 3D printing powder sintering process. The direction of the lines is parallel to the edge of the hollow window, which ensures the structural strength while providing a decorative texture basis.

[0016] In summary, due to the adoption of the technical scheme, the non-destructive jade bead inlay structure has the beneficial effects that:

[0017] 1、The non-destructive jade bead inlay structure has the non-destructive fixing function, avoids jade drilling, and maintains the original integrity of the jade.

[0018] 2、The non-destructive jade bead inlay structure realizes 8-20mm diameter full coverage through the replaceable silica gel gasket and the adjusting screw.

[0019] 3、The non-destructive jade bead inlay structure maintains constant clamping force in the range of 0-50N tension through the composite elastic system of the memory alloy and the spring, and guarantees the stability of the jade. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is a front perspective view of the non-destructive jade bead inlay structure.

[0021] Fig. 2 It is a back perspective view of the non-destructive jade bead inlay structure.

[0022] The reference signs: 1-bracket body, 11-window, 2-jade bead, 3-arc-shaped clamping groove, 4-elastic buckle assembly, 5-hinge structure. DETAILED DESCRIPTION

[0023] It should be noted that the relational terms, such as first and second, and the like, are used solely to distinguish one from another entity or action, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0024] The features and performances of the non-destructive jade bead inlay structure will be further described in detail below in combination with the embodiments.

[0025] As shown in the table, taking the inlay diameter of 16mm and the nephrite bead as an example: Figs. 1-2

[0026] 1、Material preparation:

[0027] Bracket body: TC4 titanium alloy is selected, the tensile strength is greater than or equal to 800MPa, and the surface is electroplated with 18K gold after CNC processing; ​

[0028] Elastic component: 304 stainless steel spring wire with diameter of 0.8 mm, heat treated to obtain HRC 42-45 hardness;

[0029] Silicone gasket: injection molded silicone with Shore 45A, pre-cut into 16 mm inner diameter arc-shaped pieces.

[0030] 2. Assembly process:

[0031] The upper and lower brackets are hinged through two side φ1.5 mm pin shafts;

[0032] Silicone gaskets are pasted on the inner side of the clamping arms to ensure that the bonding surface is flat and bubble-free;

[0033] Place the jade beads into the arc-shaped slot of the lower bracket, close the upper bracket and lock the adjusting screw;

[0034] Apply a 0.5 N·m pre-tightening force through a torque wrench to cause a 0.2 mm elastic deformation of the clamping arms.

[0035] 3. Performance test:

[0036] Tensile test: apply a 50 N tensile force on the material testing machine for 24 hours without displacement;

[0037] Vibration test: simulate wearing vibration (frequency 5-50 Hz) on a vibration table, no loosening after 1000 cycles;

[0038] Salt spray test: soak in 5% NaCl solution for 72 hours, no corrosion and peeling of the surface plating.

[0039] The above-described embodiments only express the specific implementation of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the protection scope of the present application. It should be noted that for ordinary skilled in the art, without departing from the technical concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application.

Claims

1. A non-destructive jade bead inlay structure, characterized in that, The metal bracket body (1) is symmetrically arranged up and down, is made of precious metal or titanium alloy material, and is internally provided with an arc-shaped clamping groove (3) matching the arc of the outer surface of the jade bead (2), which extends longitudinally along the bracket body (1) and forms a closed ring structure.

2. The tessellation structure of claim 1, wherein: The metal bracket body (1) is provided with a geometric hollow window (11) on the surface, the area of the hollow window accounts for more than 60% of the surface area of the bracket body, and the edge of the window (11) is provided with an arc-shaped transition structure corresponding to the surface profile of the jade bead.

3. The tessellation structure of claim 1, wherein: The metal bracket body (1) is provided with an elastic buckle assembly (4) at both ends, the elastic buckle assembly (4) comprises an arc-shaped clamping arm made of spring or memory metal, the inner side of the clamping arm is provided with an arc-shaped groove matching the diameter of the jade bead, and the free end of the clamping arm is elastically opened and closed with the bracket body to form a closed ring structure.

4. The tessellation structure of claim 3, wherein: The inner side of the clamping arm of the elastic buckle assembly (4) is provided with a replaceable silica gel pad layer, and the surface of the pad layer is provided with an anti-skid texture matching the friction coefficient of the surface of the jade bead.

5. The tessellation structure of claim 1, wherein: The metal bracket body (1) is integrally formed with a concealed connecting ring at the top, the annular axis of the connecting ring is perpendicular to the axis of the bracket body, and the root of the connecting ring is provided with a reinforcing rib structure connected with the bracket body (1).

6. The tessellation structure of claim 1, wherein: The up-and-down symmetric metal bracket body (1) is connected through the hinge structure (5) arranged on both sides, the hinge structure (5) comprises a cylindrical hinge hole arranged on the edge of the bracket body and a pin shaft penetrating through the hinge hole.

7. The tessellation structure of claim 3, wherein: The free end of the clamping arm of the elastic buckle assembly (4) is provided with a guide inclined surface, the guide inclined surface forms an included angle of 15°-30° with the loading direction of the jade bead, and the root of the clamping arm is provided with an adjusting screw for controlling the clamping force.

8. The tessellation structure of claim 1, wherein: The cross-sectional shape of the arc-shaped clamping groove (3) is a semicircular arc shape matching the contact surface of the jade bead, and the inner wall of the clamping groove is provided with an array of elastic protrusions distributed in the radial direction, and the height of the elastic protrusions is 0.2-0.5mm.

9. The tessellation structure of claim 5, wherein: The annular cross-section of the concealed connecting ring is a composite structure of outer circle and inner square, wherein the outer circle surface is provided with an anti-slip pattern, and the inner square hole is provided with an anti-rotation groove matching the chain buckle.

10. The tessellation structure of claim 1, wherein: The surface of the metal bracket body (1) is provided with deep and shallow chiseled base lines, the depth of the base lines is 0.1-0.3mm, the width is 0.5-1.0mm, and the direction of the lines is parallel to the edge of the hollow window (11).

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