A dual spring eyeglass hinge and eyeglasses

Abstract

In order to overcome the problem that the existing elastic hinge is difficult to consider the volume occupation and the spring performance, the utility model provides a kind of double spring glasses hinge, including elastic piece, first connecting part and second connecting part, the first connecting part and the second connecting part are rotatably connected, to form the hinge structure between the first connecting part and the second connecting part;The elastic piece includes first end and second end and the first arc spring and the second arc spring formed between the first end and the second end, the first arc spring and the second arc spring are with the rotating shaft of the hinge structure as center, and the first arc spring is set on the outer periphery of the second arc spring.The double spring glasses hinge provided by the utility model solves the contradiction of "compact space and spring reliable deformation", improves the hinge structure reliability and service life under the premise of guaranteeing adaptive function.

Description

Technical Field

[0001] This utility model belongs to the field of eyeglass structure technology, specifically relating to a double-spring eyeglass hinge and eyeglasses. Background Technology

[0002] With the rapid development of smart wearable devices, smart glasses, with their functions such as information interaction and vision assistance, have gradually become an important product in the consumer electronics field. However, smart glasses face significant challenges in adapting to different users' head circumferences.

[0003] Currently, most smart glasses are mass-produced on standardized assembly lines, making it difficult to accurately fit the different head circumferences of various consumers. For users with larger head circumferences, the temples lack sufficient clamping force, causing them to wobble and fall off, severely interfering with the user experience; while for users with smaller head circumferences, excessive clamping causes discomfort due to head pressure. To improve fit, existing technologies attempt to add springs to the hinges, using the outward elastic force of the springs to allow the temples to self-adjust, improving wearing comfort and stability to some extent.

[0004] However, new problems arise: on the one hand, the addition of the spring increases the space occupied by the hinge; on the other hand, electrical connection wires need to be arranged between the smart glasses frame and the temples for data transmission and power supply, making the already tight hinge space even more congested. To reduce the hinge volume, the conventional approach is to shorten the length of the spring while increasing its thickness to ensure elasticity. However, this leads to increased stress concentration at a single location when the spring bends, which can easily cause crack propagation, significantly increasing the risk of breakage and affecting the reliability and lifespan of the smart glasses. A better solution is urgently needed to resolve the contradiction between space and spring performance while meeting the head circumference adaptation requirements. Utility Model Content

[0005] To address the problem that existing elastic hinges struggle to balance size and spring performance, this invention provides a double-spring eyeglass hinge and eyeglasses.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0007] On one hand, this utility model provides a double-spring eyeglass hinge, including an elastic element, a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion being rotatably connected to form a hinge structure between the first connecting portion and the second connecting portion; the elastic element includes a first end and a second end, and a first arc-shaped spring and a second arc-shaped spring formed between the first end and the second end, the first arc-shaped spring and the second arc-shaped spring are both centered on the rotation axis of the hinge structure, and the first arc-shaped spring is sleeved on the outer periphery of the second arc-shaped spring; when the temple of the eyeglass is extended to approximately 90°, the first connecting portion abuts against the first end, and the second connecting portion abuts against the second end; when the temple of the eyeglass is further extended from approximately 90°, the first arc-shaped spring and the second arc-shaped spring undergo elastic deformation to provide elasticity to limit the further extension of the temple of the eyeglass.

[0008] Optionally, the first arc-shaped spring is provided with a first mounting hole and a second mounting hole at the first end of the elastic member. The first mounting hole is used for connecting the first end of the elastic member with the first connecting part. The first arc-shaped spring is provided with a slot at the second end of the elastic member. The second arc-shaped spring is provided with a first locking block at the first end of the elastic member. The first locking block is embedded in the second mounting hole. The second arc-shaped spring is provided with a second locking block at the second end of the elastic member. The second locking block is embedded in the slot.

[0009] Optionally, a damping element may also be included, wherein the first arc-shaped spring sheet slidably abuts against the damping element to provide damping when the temple of the eyeglasses is extended or retracted.

[0010] Optionally, the damping element is a plastic part, the damping element is disposed on the second connecting part, and the damping element abuts against the outer wall of the first arc-shaped spring sheet.

[0011] Optionally, it also includes an electrical connecting wire, which passes sequentially through the first connecting portion, the hinge structure, and the second connecting portion; and the electrical connecting wire and the elastic element are respectively disposed on both sides of the hinge structure.

[0012] Optionally, the first connecting portion includes a first mounting base, a middle spacer, and a protective cover. One end of the middle spacer is connected to the first mounting base, and the other end of the middle spacer is provided with a hinge ring. The electrical connection line is located between the middle spacer and the first mounting base. The elastic member is located on the side of the middle spacer away from the electrical connection line. The protective cover is connected to the first mounting base, and the first end of the elastic member is located between one end of the middle spacer and the protective cover.

[0013] Optionally, the first mounting base is provided with a groove, one end of the intermediate spacer is embedded in the groove, and the protective cover covers one side of the groove.

[0014] Optionally, the end of the second connecting portion is provided with a first end cap and a second end cap that are spaced apart from each other and parallel to each other. The hinge ring, the first arc-shaped spring piece and the second arc-shaped spring piece are located between the first end cap and the second end cap. The hinge ring, the first end cap and the second end cap are rotatably connected to form the hinge structure.

[0015] Optionally, the first arc-shaped spring and the second arc-shaped spring are each independently selected from metal springs or non-metal springs, wherein the metal spring is selected from one of zirconium-based amorphous alloy springs, copper-based amorphous alloy springs, iron-based amorphous alloy springs, magnesium-based amorphous alloy springs, or titanium-based amorphous alloy springs.

[0016] On another aspect, this utility model provides a pair of eyeglasses, including the double spring-loaded eyeglass hinge, eyeglass frame and eyeglass temples as described above. The eyeglass frame is provided with a post, one of the first connecting part and the second connecting part is connected to the post, and the other of the first connecting part and the second connecting part is connected to the eyeglass temples.

[0017] According to the double-spring eyeglass hinge provided by this utility model, the elastic element is set concentrically on the outer periphery of the hinge structure, which can make full use of the internal space of the elastic element and improve space utilization efficiency. When the temple of the eyeglasses is opened to approximately 90° and then further expanded outward, the elastic element can effectively undergo elastic deformation, providing elasticity to limit the further outward expansion of the temple of the eyeglasses, thereby improving wearing comfort. At the same time, based on the problem of the limited elastic stroke of the elastic element, the elastic element is divided into a first arc-shaped spring and a second arc-shaped spring that are independently stacked. Compared with the stress increase and breakage risk brought about by directly increasing the thickness of the spring, the double-spring method can effectively disperse bending stress. When bent under force, the two springs can slightly shift, avoiding excessive stress concentration at a single position, reducing the risk of breakage, and meeting the elasticity requirements at the same time. This solves the contradiction between "compact space and reliable deformation of springs", improving the reliability and service life of the hinge structure while ensuring the adaptability function. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a double-spring eyeglass hinge provided in one embodiment of the present invention;

[0019] Figure 2 This is an exploded view of a double-spring eyeglass hinge provided in an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of an elastic element provided in an embodiment of the present invention;

[0021] Figure 4 This is an exploded view of an elastic element provided in an embodiment of this utility model.

[0022] The reference numerals in the accompanying drawings are as follows:

[0023] 1. First connecting part; 11. First mounting base; 111. Groove; 12. Intermediate spacer; 121. Hinge ring; 13. Protective cover; 2. Second connecting part; 21. First end cap; 22. Second end cap; 23. Fourth locking block; 3. Elastic element; 31. First arc-shaped spring; 311. First mounting hole; 312. Second mounting hole; 313. Slot; 314. Third locking block; 32. Second arc-shaped spring; 321. First locking block; 322. Second locking block; 33. First end; 34. Second end; 4. Damping element; 5. Electrical connection wire. Detailed Implementation

[0024] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] 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.

[0027] See Figures 1-4As shown, one embodiment of this utility model provides a double-spring eyeglass hinge, including an elastic element 3, a first connecting portion 1, and a second connecting portion 2. The first connecting portion 1 and the second connecting portion 2 are rotatably connected to form a hinge structure between the first connecting portion 1 and the second connecting portion 2. The elastic element 3 includes a first end 33 and a second end 34, and a first arc-shaped spring 31 and a second arc-shaped spring 32 formed between the first end 33 and the second end 34. The first arc-shaped spring 31 and the second arc-shaped spring 32 are both centered on the rotation axis of the hinge structure, and the first arc-shaped spring 31 is sleeved on the outer periphery of the second arc-shaped spring 32. When the temple of the eyeglasses is extended to approximately 90°, the first connecting portion 1 abuts against the first end 33, and the second connecting portion 2 abuts against the second end 34. When the temple of the eyeglasses is further extended from approximately 90°, the first arc-shaped spring 31 and the second arc-shaped spring 32 undergo elastic deformation to provide elasticity that limits the further extension of the temple of the eyeglasses.

[0028] The dual-spring eyeglass hinge places the elastic element 3 concentrically on the outer periphery of the hinge structure, which can make full use of the internal space of the elastic element 3 and improve space utilization efficiency. When the temple of the eyeglasses is extended to approximately 90° and then further expanded outward, the elastic element 3 can effectively undergo elastic deformation, providing elasticity to limit the further expansion of the temple of the eyeglasses, thereby improving wearing comfort. At the same time, based on the limited elastic stroke of the elastic element 3, the elastic element 3 is divided into the first arc-shaped spring 31 and the second arc-shaped spring 32, which are independently stacked. Compared with the stress increase and breakage risk caused by directly increasing the thickness of the spring, the dual-spring method can effectively disperse bending stress. When bent under force, the two springs can slightly shift, avoiding excessive stress concentration at a single position and reducing the risk of breakage. At the same time, it meets the elasticity requirements and solves the contradiction between "compact space and reliable deformation of springs". While ensuring the adaptability function, it improves the reliability and service life of the hinge structure.

[0029] In one embodiment, the first arc-shaped spring piece 31 is provided with a first mounting hole 311 and a second mounting hole 312 at the first end 33 of the elastic member 3. The first mounting hole 311 is used for connecting the first end 33 of the elastic member 3 to the first connecting part 1. The first arc-shaped spring piece 31 is provided with a slot 313 at the second end 34 of the elastic member 3. The second arc-shaped spring piece 32 is provided with a first locking block 321 at the first end 33 of the elastic member 3. The first locking block 321 is embedded in the second mounting hole 312. The second arc-shaped spring piece 32 is provided with a second locking block 322 at the second end 34 of the elastic member 3. The second locking block 322 is embedded in the slot 313.

[0030] The above-mentioned interlocking structure facilitates quick positioning and installation of the double springs during production and assembly, reducing manual assembly errors. If maintenance or replacement of the springs is required later, it can also be achieved through simple disassembly and snap-fit ​​structure, improving production efficiency and maintenance convenience.

[0031] Specifically, the second mounting hole 312 is larger than the first locking block 321, so that the second arc-shaped spring piece 32 can slide slightly relative to the first arc-shaped spring piece 31 to avoid stress concentration problems.

[0032] In one embodiment, the first arc-shaped spring piece 31 is provided with a third locking block 314 at the second end 34 of the elastic member 3. There are two third locking blocks 314, which are respectively located on both sides of the locking groove 313. The second connecting part 2 is provided with two fourth locking blocks 23 corresponding to the positions of the two third locking blocks 314. When the temple of the glasses is extended to approximately 90°, the two third locking blocks 314 abut against the two fourth locking blocks 23 to position the temple of the glasses.

[0033] In one embodiment, a damping element 4 is also included, wherein the first arcuate spring 31 slidably abuts the damping element 4 to provide damping when the temple of the glasses is extended or retracted.

[0034] When the temples of the glasses are extended or retracted, the sliding friction between the damping element 4 and the first arc-shaped spring 31 gives the operation a "slow" feel, so that the temples of the glasses can be suspended at any point during the extension and retraction process, and the stability of the temples of the glasses in the suspended position is maintained. Especially when the temples of the glasses are in the extended and retracted state, even if the glasses frame is picked up alone, it will not cause the temples of the glasses to wobble, thus improving the user experience.

[0035] In one embodiment, the damping element 4 is a plastic part.

[0036] Compared to other materials, using plastic parts as damping components 4 provides stable damping. Specifically, plastics with wear-resistant properties can be selected, such as polyoxymethylene, nylon, polycarbonate, polyurethane, polytetrafluoroethylene, polyamide, polysulfone, polyetheretherketone, polybutylene terephthalate, polyphenylene sulfide, etc. Fillers or fibers can also be added to the plastic parts to provide reinforcement.

[0037] In one embodiment, the damping member 4 is disposed on the second connecting portion 2, and the damping member 4 abuts against the outer wall of the first arc-shaped spring piece 31.

[0038] The method of damping by abutting the damping element 4 against the outer wall of the first arc-shaped spring 31 has a longer service life, better stability, and a wider installation tolerance. Because the first arc-shaped spring 31 itself is elastic, by abutting the damping element 4 with the outer wall of the first arc-shaped spring 31, the pressure between the first arc-shaped spring 31 and the damping element 4 can be kept in a more moderate state by relying on the elasticity of the first arc-shaped spring 31, allowing for higher dimensional errors, reducing the requirements for machining accuracy, and avoiding the problems of excessive pressure leading to severe wear or excessive pressure leading to insufficient damping. At the same time, after the damping element 4 has undergone a certain amount of wear, it can also maintain a certain damping effect by relying on the adaptive deformation of the first arc-shaped spring 31. Compared with other existing damping implementation structures, its damping retention effect after wear is better, and it also has a higher dimensional error tolerance during installation.

[0039] In one embodiment, an electrical connection wire 5 is further included, which passes sequentially through the first connecting portion 1, the hinge structure, and the second connecting portion 2; and the electrical connection wire 5 and the elastic element 3 are respectively disposed on both sides of the hinge structure.

[0040] The electrical connection line 5 is used for power supply and signal transmission between the eyeglass frame and the temple. By placing the electrical connection line 5 and the elastic element 3 on opposite sides of the hinge structure, spatial interference between the elastic element 3 and the electrical connection line 5 is effectively avoided. On the one hand, the elastic element 3 will not cause damage to the electrical connection line 5 by squeezing or pulling when it undergoes elastic deformation, ensuring the stability of the data transmission and power supply functions of the electrical connection line 5. On the other hand, the reasonable space planning makes the installation and wiring of the electrical connection line 5 more organized, reducing the risk of failure caused by wire entanglement or squeezing, and also providing the possibility for optimizing the internal space of the hinge position, which helps to achieve a flat design of the hinge structure.

[0041] In one embodiment, the first connecting portion 1 includes a first mounting base 11, a middle spacer 12, and a protective cover 13. One end of the middle spacer 12 is connected to the first mounting base 11, and the other end of the middle spacer 12 is provided with a hinge ring 121. The electrical connection line 5 is located between the middle spacer 12 and the first mounting base 11. The elastic member 3 is located on the side of the middle spacer 12 away from the electrical connection line 5. The protective cover 13 is connected to the first mounting base 11, and the first end 33 of the elastic member 3 is located between one end of the middle spacer 12 and the protective cover 13.

[0042] The intermediate spacer 12 separates the electrical connection line 5 (located between the intermediate spacer 12 and the first mounting base 11) and the elastic element 3 (located on the side of the intermediate spacer 12 away from the electrical connection), forming a clear layout of "electrical area + elastic area", maximizing the use of the internal space of the first connection part 1, adapting to the compact hinge design, and facilitating the separate adjustment of the reliability of the electrical connection and the elastic performance of the spring.

[0043] The modular structure supports step-by-step assembly. First, the electrical connection line 5 is laid out, then the elastic component 3 is installed, and finally the protective cover 13 is added, reducing assembly complexity. During later maintenance, the elastic component 3 can be inspected separately by removing the protective cover 13, or the electrical connection line 5 can be operated and maintained through the intermediate spacer 12, improving maintenance convenience and reducing overall replacement costs.

[0044] In one embodiment, the first mounting base 11 is provided with a groove 111, one end of the intermediate spacer 12 is embedded in the groove 111, and the protective cover 13 covers one side of the groove 111.

[0045] The groove 111 provides precise positioning and mechanical limit for the middle spacer 12. After being embedded, the middle spacer 12 is more firmly connected to the first mounting base 11. When bearing the elastic force of the spring and the opening and closing stress of the eyeglass temple, it is not easy to displace or loosen, thus ensuring the overall structural strength and stability of the hinge.

[0046] The protective cover 13 covers the groove 111, forming a semi-enclosed protective space for the internal electrical connection wire 5 and elastic element 3, improving the reliability of the hinge in complex usage environments and avoiding interference with the external environment.

[0047] In one embodiment, the end of the second connecting portion 2 is provided with a first end cap 21 and a second end cap 22 that are spaced apart from each other and parallel to each other. The hinge ring 121, the first arc-shaped spring piece 31 and the second arc-shaped spring piece 32 are located between the first end cap 21 and the second end cap 22. The hinge ring 121, the first end cap 21 and the second end cap 22 are rotatably connected to form the hinge structure.

[0048] In a specific embodiment, there are two hinge rings 121, which are spaced apart at the other end of the middle spacer 12. Screws (not shown) are sequentially passed through the first end cap 21, the two hinge rings 121 and the second end cap 22 to form a hinge structure.

[0049] The two end caps form a "clamping" installation space, allowing the hinge ring 121 and the spring to be assembled in an orderly manner within a limited range, which meets the miniaturization requirements of smart glasses. At the same time, the two end caps constrain the spring and the hinge ring 121 to prevent radial displacement during deformation / rotation, ensuring the stability of the hinge rotation and elastic function. Meanwhile, the first end cap 21 and the second end cap 22 provide a certain degree of protection for the first arc-shaped spring 31 and the second arc-shaped spring 32 inside.

[0050] In some embodiments, the first arc-shaped spring 31 and the second arc-shaped spring 32 are each independently selected from metal springs or non-metal springs, wherein the metal springs are selected from one of zirconium-based amorphous alloy springs, copper-based amorphous alloy springs, iron-based amorphous alloy springs, magnesium-based amorphous alloy springs, or titanium-based amorphous alloy springs.

[0051] In a preferred embodiment, the first arc-shaped spring 31 and the second arc-shaped spring 32 are selected from zirconium-based amorphous alloy springs.

[0052] Zirconium-based amorphous alloys boast high strength, with a tensile strength of 800-1500 MPa, 2.5 times that of 316 stainless steel and 1.5 times that of titanium alloys. This allows for thinner and lighter hinge designs, reducing component weight and improving wearer comfort. The high strength also ensures the glasses won't deform during long-term use, enhancing their overall quality. Furthermore, the Vickers hardness of zirconium-based amorphous alloys is 440-540 Hv, far exceeding that of stainless steel and titanium alloys, resulting in less wear during use. It also doesn't deform or lose elasticity over extended periods. The elastic deformation rate of zirconium-based amorphous alloys is 0.6-1.5%, six times higher than 316 stainless steel, offering better elasticity and improved wearing comfort.

[0053] Another embodiment of the present invention provides an eyeglass, including a double-spring eyeglass hinge, an eyeglass frame and an eyeglass temple as described above. The eyeglass frame is provided with a post, one of the first connecting part 1 and the second connecting part 2 is connected to the post, and the other of the first connecting part 1 and the second connecting part 2 is connected to the eyeglass temple.

[0054] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double-spring eyeglass hinge, characterized in that, The device includes an elastic element, a first connecting portion, and a second connecting portion, which are rotatably connected to form a hinge structure between them. The elastic element includes a first end and a second end, as well as a first arc-shaped spring and a second arc-shaped spring formed between the first end and the second end. Both the first arc-shaped spring and the second arc-shaped spring are centered on the rotation axis of the hinge structure, and the first arc-shaped spring is sleeved on the outer periphery of the second arc-shaped spring. When the temple of the eyeglasses is extended to approximately 90°, the first connecting portion abuts against the first end, and the second connecting portion abuts against the second end. When the temple of the eyeglasses is further extended from approximately 90°, the first arc-shaped spring and the second arc-shaped spring undergo elastic deformation to provide elasticity that limits further extension of the temple of the eyeglasses.

2. The double-spring eyeglass hinge according to claim 1, characterized in that, The first arc-shaped spring is provided with a first mounting hole and a second mounting hole at the first end of the elastic member. The first mounting hole is used for connecting the first end of the elastic member with the first connecting part. The first arc-shaped spring is provided with a slot at the second end of the elastic member. The second arc-shaped spring is provided with a first locking block at the first end of the elastic member. The first locking block is embedded in the second mounting hole. The second arc-shaped spring is provided with a second locking block at the second end of the elastic member. The second locking block is embedded in the slot.

3. The double-spring eyeglass hinge according to claim 1, characterized in that, It also includes a damping element, wherein the first arc-shaped spring can slidably abut against the damping element to provide damping when the temples of the glasses are extended or retracted.

4. The double-spring eyeglass hinge according to claim 3, characterized in that, The damping component is a plastic component, which is disposed on the second connecting part and abuts against the outer wall of the first arc-shaped spring sheet.

5. The double-spring eyeglass hinge according to claim 1, characterized in that, It also includes an electrical connection wire, which passes sequentially through the first connecting part, the hinge structure, and the second connecting part; and the electrical connection wire and the elastic element are respectively disposed on both sides of the hinge structure.

6. The double-spring eyeglass hinge according to claim 5, characterized in that, The first connecting part includes a first mounting base, a middle spacer, and a protective cover. One end of the middle spacer is connected to the first mounting base, and the other end of the middle spacer is provided with a hinge ring. The electrical connection line is located between the middle spacer and the first mounting base. The elastic member is located on the side of the middle spacer away from the electrical connection line. The protective cover is connected to the first mounting base, and the first end of the elastic member is located between one end of the middle spacer and the protective cover.

7. The double-spring eyeglass hinge according to claim 6, characterized in that, The first mounting base is provided with a groove, one end of the intermediate spacer is embedded in the groove, and the protective cover covers one side of the groove.

8. The double-spring eyeglass hinge according to claim 6, characterized in that, The end of the second connecting part is provided with a first end cap and a second end cap that are spaced apart from each other and parallel to each other. The hinge ring, the first arc-shaped spring piece and the second arc-shaped spring piece are located between the first end cap and the second end cap. The hinge ring, the first end cap and the second end cap are rotatably connected to form the hinge structure.

9. The double-spring eyeglass hinge according to claim 1, characterized in that, The first arc-shaped spring and the second arc-shaped spring are each independently selected from metal springs or non-metal springs. The metal springs are selected from one of zirconium-based amorphous alloy springs, copper-based amorphous alloy springs, iron-based amorphous alloy springs, magnesium-based amorphous alloy springs, or titanium-based amorphous alloy springs.

10. A pair of eyeglasses, characterized in that, The invention includes a double-spring eyeglass hinge, an eyeglass frame, and an eyeglass temple as described in any one of claims 1 to 9, wherein the eyeglass frame is provided with a post, one of the first connecting portion and the second connecting portion is connected to the post, and the other of the first connecting portion and the second connecting portion is connected to the eyeglass temple.

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