Smart glasses, injection mold and injection molding method thereof

Abstract

The present invention belongs to the field of electronic packaging and protection technology, and discloses a pair of smart glasses, an injection mold and an injection molding method thereof. The smart glasses include a frame, temples, an FPC and a rubber sleeve assembly. The hinge shaft of the temple is rotatably arranged in a hinge seat of a stud of the frame, the FPC bypasses the hinge shaft, and the two ends of the FPC are respectively located in the stud and the temple; the rubber sleeve assembly includes a first rubber sleeve and a second rubber sleeve, the first rubber sleeve is coated on a side of the FPC located at the stud, a first sealing groove is provided in the stud, and the first rubber sleeve is embedded in the first sealing groove; the second rubber sleeve is coated on a side of the FPC located at the temple, a second sealing groove is provided in the temple, and the second rubber sleeve is embedded in the second sealing groove. The first rubber sleeve and the second rubber sleeve effectively improve the sealing effect of the temple hinge without affecting the flexible opening and closing of the temple, thereby improving the overall waterproof performance of the smart glasses; wherein, the injection mold is used for injection molding the above-mentioned rubber sleeve assembly, and the injection molding method is applied to the above-mentioned injection mold.

Description

Technical Field

[0001] The present invention relates to the field of electronic packaging and protection technology, and in particular to smart glasses, an injection mold and an injection molding method thereof. Background Art

[0002] In recent years, with the rapid development of augmented reality (AR) and artificial intelligence (AI) technologies, AR / AI smart glasses, as a new generation of human-computer interaction terminals, have demonstrated tremendous potential for application in consumer entertainment, industrial inspection, medical assistance, and other fields. Major technology companies have launched commercial products, propelling this technology from concept to practical application. However, in actual use scenarios, AR / AI smart glasses face the challenges of complex environmental conditions, with their waterproof performance becoming a key factor limiting product reliability and user experience.

[0003] The design of current AR / AI smart glasses on the market often focuses on display effects, computing performance, and lightweighting, but neglects to optimize the overall waterproof performance. The hinged joints where the temples connect to the frame are particularly complex and require flexible opening and closing, making them a weak link in waterproof design. Most products lack any sealing at the hinges, relying solely on the simple splicing of the frame and temples, which is unable to effectively block rainwater intrusion. Once rainwater seeps into the smart glasses through the gaps at the hinges, it can easily cause problems such as circuit board shorts and corrosion of electronic components, seriously affecting the lifespan and functional stability of the smart glasses and even posing a safety hazard.

[0004] Therefore, it is urgent to propose a smart glasses, an injection mold and an injection molding method thereof to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide smart glasses, an injection mold and an injection molding method thereof, which effectively improve the sealing effect of the hinged joints of the temples without affecting the flexible opening and closing of the temples, thereby enhancing the waterproof performance of the entire smart glasses.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A pair of smart glasses comprising a frame, temples, an FPC, and a rubber sleeve assembly, wherein the hinge shaft of the temple is rotatably disposed in a hinge seat of a stud of the frame, the FPC bypasses the hinge shaft, and the two ends of the FPC are respectively located in the stud and the temple;

[0008] The rubber sleeve assembly includes:

[0009] A first rubber sleeve is covered on one side of the FPC located at the pile head, a first sealing groove is provided in the pile head, and the first rubber sleeve is embedded in the first sealing groove;

[0010] The second rubber sleeve is covered on one side of the FPC located on the temple. A second sealing groove is provided in the temple, and the second rubber sleeve is embedded in the second sealing groove.

[0011] In some optional embodiments, a positioning groove is provided in the first sealing groove, and the first rubber sleeve is provided with a positioning portion, and the positioning portion can be snapped into the positioning groove.

[0012] In some optional embodiments, the first rubber sleeve is provided with a clearance groove, and the circumferential side surface of the hinge shaft is movably fitted to the inner wall of the clearance groove.

[0013] In some optional embodiments, a blocking portion is provided on the first rubber sleeve extending outward, and when the temple is unfolded, the blocking portion is clamped between the stud and the temple.

[0014] An injection mold for injection molding the rubber cover assembly of the smart glasses as described in any one of the above items, characterized in that the injection mold includes an upper mold, a lower mold and a pressing part, the upper mold is provided with a first upper groove and a second upper groove, and the lower mold is provided with a first lower groove, a second lower groove and a limit groove;

[0015] When the upper mold and the lower mold are closed, the first upper groove and the first lower groove form a first mold cavity for injection molding the first rubber sleeve, the second upper groove and the second lower groove form a second mold cavity for injection molding the second rubber sleeve, the upper mold and the limiting groove form a limiting cavity for accommodating the FPC, and the limiting cavity is respectively connected to the first mold cavity and the second mold cavity; the pressing part is movably provided in the upper mold and is configured to press the FPC tightly against the first mold cavity and the second mold cavity.

[0016] In some optional embodiments, the press-forming member includes a first press-forming member and a second press-forming member, and the upper die is provided with a first press-forming hole and a second press-forming hole;

[0017] One end of the first press-molded hole passes through the top of the upper mold, and the other end is connected to the first upper mold groove. The first press-molded member is movably provided in the first press-molded hole to press against the FPC.

[0018] One end of the second pressing hole passes through the top of the upper mold, and the other end is communicated with the second upper molding groove. The second pressing piece is movably provided in the second pressing hole for pressing against the FPC.

[0019] In some optional embodiments, the first press-forming member includes a first abutting portion and a first plug-in portion connected to each other, a first stepped surface is defined between the first abutting portion and the first plug-in portion, the first plug-in portion is configured to be plugged into and engaged with the first press-forming hole, and the first stepped surface is capable of abutting against an upper end surface of the upper die;

[0020] The second press-forming part includes a second abutting portion and a second plug-in portion connected to each other, and a second step surface is provided between the second abutting portion and the second plug-in portion. The second plug-in portion is used to be plugged into and fit with the second press-forming hole, and the second step surface can abut against the upper end surface of the upper mold.

[0021] In some optional embodiments, the lower mold includes a first lower mold and a second lower mold, the first lower mold is provided with a first parting groove, a second parting groove and a first limiting groove, and the second lower mold is provided with a third parting groove, a fourth parting groove and a second limiting groove;

[0022] When the first lower mold and the second lower mold are closed, the first parting groove and the third parting groove are arranged to form the first lower mold groove, the second parting groove and the fourth parting groove are arranged to form the second lower mold groove, and the first limiting groove and the second limiting groove are arranged to form the limiting groove.

[0023] In some optional embodiments, the section of the limiting cavity located between the first cavity and the second cavity is arched in an arc shape toward the upper mold, and the arch curvature of the section is adapted to the bending curvature of the FPC when the temples are in the unfolded state.

[0024] An injection molding method for an injection mold, applied to the injection mold as described in any one of the above items, comprises the following steps:

[0025] S1: placing the FPC in the limiting groove of the lower mold, and closing the upper mold with the lower mold;

[0026] S2: inserting the press part into the upper mold and pressing the FPC into the first cavity and the second cavity;

[0027] S3: injecting liquid material into the first cavity and the second cavity to perform one injection molding;

[0028] S4: When the liquid material of the first injection molding is solidified, the press molded part is pulled out, and liquid material is injected into the first mold cavity and the second mold cavity again to perform secondary injection molding.

[0029] Beneficial effects of the present invention:

[0030] The present invention provides smart glasses, comprising a frame, temples, an FPC and a rubber sleeve assembly, wherein a hinge axis of the temple is rotatably arranged in a hinge seat of a stud of the frame, the FPC bypasses the hinge axis, and two ends of the FPC are respectively located in the stud and the temple; the rubber sleeve assembly comprises a first rubber sleeve and a second rubber sleeve, wherein the first rubber sleeve is covered on a side of the FPC located on the stud, a first sealing groove is provided in the stud, and the first rubber sleeve is embedded in the first sealing groove; the second rubber sleeve is covered on a side of the FPC located on the temple, a second sealing groove is provided in the temple, and the second rubber sleeve is embedded in the second sealing groove. By wrapping the first rubber sleeve on one side of the FPC at the pile head and embedding the first rubber sleeve in the first sealing groove of the pile head, the first rubber sleeve is sealed to the inner wall of the first sealing groove and the FPC, thereby achieving a waterproof seal inside the pile head; by wrapping the second rubber sleeve on one side of the FPC at the temple, the second rubber sleeve is embedded in the second sealing groove inside the temple, thereby achieving a waterproof seal inside the temple; the above arrangement can effectively improve the sealing effect of the hinge of the temple without affecting the flexible opening and closing of the temple, thereby improving the overall waterproof performance of the smart glasses.

[0031] The present invention also provides an injection mold for injection molding the aforementioned rubber sleeve assembly. The injection mold includes an upper mold, a lower mold, and a press mold. The upper mold is provided with a first upper groove and a second upper groove, and the lower mold is provided with a first lower groove, a second lower groove, and a limit groove. When the upper mold and the lower mold are closed, the first upper groove and the first lower groove form a first cavity for injection molding the first rubber sleeve, the second upper groove and the second lower groove form a second cavity for injection molding the second rubber sleeve, and the upper mold and the limit groove form a limit cavity for accommodating an FPC, and the limit cavity is respectively connected to the first cavity and the second cavity. The press mold is movably provided in the upper mold and is configured to press the FPC against the first cavity and the second cavity. The first rubber sleeve and the second rubber sleeve are respectively overmolded on the FPC, effectively improving the sealing effect at the hinge of the temple and enhancing the overall waterproof performance of the smart glasses.

[0032] The present invention also provides an injection molding method for an injection mold, which is applied to the above-mentioned injection mold to effectively improve the sealing effect of the hinged joints of the temples and enhance the waterproof performance of the entire smart glasses. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of the smart glasses of the present invention;

[0034] Figure 2 is a schematic diagram of a partial structure of the smart glasses of the present invention;

[0035] Figure 3 This is a schematic diagram of the structure of the rubber sleeve component covering the FPC of the present invention Figure 1 ;

[0036] Figure 4 This is a schematic diagram of the structure of the rubber sleeve component covering the FPC of the present invention Figure 2 ;

[0037] Figure 5 It is a structural schematic diagram of the injection mold of the present invention;

[0038] Figure 6 is a cross-sectional view of an injection mold of the present invention;

[0039] Figure 7 is an exploded view of the injection mold of the present invention;

[0040] Figure 8 It is a top view of the upper mold of the present invention;

[0041] Figure 9 It is a bottom view of the upper mold of the present invention;

[0042] Figure 10 It is a top view of the lower mold of the present invention;

[0043] Figure 11 It is an exploded view of the lower mold of the present invention.

[0044] In the picture:

[0045] 10. Mirror frame; 101. Pile head; 102. Articulated seat;

[0046] 11. Temple; 111. Hinge axis;

[0047] 20. FPC;

[0048] 21. Rubber sleeve assembly; 211. First rubber sleeve; 2111. Positioning portion; 2112. Giving groove; 2113. Blocking portion; 212. Second rubber sleeve;

[0049] 30. Upper mold; 301. First upper groove; 302. Second upper groove; 303. First connector; 304. First pressing hole; 305. Second pressing hole; 306. First injection hole; 307. Second injection hole; 308. First guide groove; 309. Second guide groove; 310. Exhaust hole;

[0050] 31. Lower die; 311. First lower groove; 312. Second lower groove; 313. Limiting groove; 314. First plug hole; 315. First lower die; 3151. First parting groove; 3152. Second parting groove; 3153. First limiting groove; 3154. Second plug connector; 316. Second lower die; 3161. Third parting groove; 3162. Fourth parting groove; 3163. Second limiting groove; 3164. Second plug hole;

[0051] 32. First press-formed part; 321. First abutting portion; 322. First plug-in portion;

[0052] 33. Second press-fitting part; 331. Second abutting portion; 332. Second plug-in portion. DETAILED DESCRIPTION

[0053] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0054] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0055] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0056] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0057] Example 1

[0058] like Figures 1 to 4As shown, this embodiment provides a smart glasses, including a frame 10, temples 11, an FPC (flexible printed circuit board) 20 and a rubber sleeve assembly 21. Both ends of the frame 10 are provided with a stud 101 for connecting to the temples 11, and the stud 101 is provided with a hinge seat 102. The temple 11 is provided with a hinge shaft 111. The hinge shaft 111 of the temple 11 is rotatably set in the hinge seat 102 of the stud 101. The FPC 20 bypasses the hinge shaft 111, and the two ends of the FPC 20 are respectively located in the stud 101 and the temple 11, for connecting to the circuits in the stud 101 and the temple 11.

[0059] The rubber sleeve assembly 21 includes a first rubber sleeve 211 and a second rubber sleeve 212. The first rubber sleeve 211 is coated on one side of the FPC 20 located on the stud 101. A first sealing groove is provided in the stud 101. The first rubber sleeve 211 is embedded in the first sealing groove. The first rubber sleeve 211 is sealed to the inner wall of the first sealing groove and the FPC 20, thereby achieving a waterproof seal inside the stud 101. The second rubber sleeve 212 is coated on one side of the FPC 20 located on the temple 11. A second sealing groove is provided in the temple 11. The second rubber sleeve 212 is embedded in the second sealing groove. The second rubber sleeve 212 is sealed to the inner wall of the second sealing groove and the FPC 20, thereby achieving a waterproof seal inside the temple 11.

[0060] By covering the first rubber sleeve 211 and the second rubber sleeve 212 on the surface of the FPC20, the sealing effect at the hinge of the temple 11 can be effectively improved without affecting the flexible opening and closing of the temple 11, thereby improving the overall waterproof performance of the smart glasses.

[0061] like Figure 2 and Figure 3 As shown, in some optional embodiments, the first rubber sleeve 211 is provided with a clearance groove 2112, and the circumferential side surface of the hinge shaft 111 is movably fitted to the inner wall of the clearance groove 2112, thereby further improving the sealing performance, and can improve the smoothness of opening and closing of the temple 11, thereby enhancing the user experience.

[0062] like Figure 2 and Figure 4 As shown, in some optional embodiments, a positioning groove is provided in the first sealing groove, and the first rubber sleeve 211 is provided with a positioning portion 2111, and the positioning portion 2111 can be snapped into the positioning groove to achieve the positioning installation of the first rubber sleeve 211 in the first sealing groove, preventing the FPC 20 from being pulled when the temple 11 is opened and closed, causing the first rubber sleeve 211 to shift, which is beneficial to improving the structural stability of the smart glasses and further ensuring the waterproof performance of the hinge between the pile head 101 and the temple 11.

[0063] In some optional embodiments, a blocking portion 2113 is provided extending outward from the first rubber sleeve 211. When the temple 11 is unfolded, the blocking portion 2113 is sandwiched between the stud 101 and the temple 11. When the smart glasses are worn, the temple 11 is unfolded. By sandwiching the blocking portion 2113 between the stud 101 and the temple 11, the sealing performance of the hinge can be further improved, and the blocking portion 2113 can be provided to cushion and position the temple 11 when it is unfolded, thereby improving the wearing comfort of the user.

[0064] It should be noted that plug-ins for connecting circuits are connected to both ends of FPC20. Since the thickness of the plug-in is greater than the thickness of FPC20, it is difficult to assemble FPC20 with the first rubber sleeve 211 and the second rubber sleeve 212. In order to solve the above problem, in this embodiment, the first rubber sleeve 211 and the second rubber sleeve 212 are both injection-molded on the surface of FPC20. This molding method can be mass-produced, which is conducive to improving production efficiency and reducing production costs.

[0065] Of course, in other embodiments, the first rubber sleeve 211 or the second rubber sleeve 212 may be configured as a split type and assembled with the FPC 20 by bonding, which is not limited here.

[0066] Example 2

[0067] like Figures 5 to 11 As shown, this embodiment provides an injection mold for injection molding the rubber cover assembly 21 of the smart glasses in Example 1.

[0068] The injection mold includes an upper mold 30, a lower mold 31 and a pressing part. The upper mold 30 is provided with a first upper groove 301 and a second upper groove 302, and the lower mold 31 is provided with a first lower groove 311, a second lower groove 312 and a limiting groove 313; when the upper mold 30 and the lower mold 31 are closed, the first upper groove 301 and the first lower groove 311 are arranged to form a first cavity for injection molding the first rubber sleeve 211, the second upper groove 302 and the second lower groove 312 are arranged to form a second cavity for injection molding the second rubber sleeve 212, the upper mold 30 and the limiting groove 313 are arranged to form a limiting cavity for accommodating the FPC 20, and the limiting cavity is respectively connected with the first cavity and the second cavity; the pressing part is movably arranged in the upper mold 30, and is configured to press the FPC 20 tightly against the first cavity and the second cavity.

[0069] By providing the separable upper mold 30 and lower mold 31 , it is convenient to open the mold and take out the first rubber sleeve 211 and the second rubber sleeve 212 , so that the injection mold can be used multiple times.

[0070] During injection molding, the molding part presses the FPC20 against the first and second cavities, injects liquid into the first and second cavities, and performs a single injection molding. When the liquid material of the single injection molding solidifies, the FPC20 is clamped in the liquid material of the single injection molding, so that the FPC20 is in a preset position and a preset shape in the first and second cavities. The molding part is then pulled out for a secondary injection molding to fill the missing material caused by the molding part occupying the position. When the liquid material of the secondary injection molding solidifies, the mold is opened and the FPC20 coated with the first rubber sleeve 211 and the second rubber sleeve 212 is taken out. The two injection moldings ensure that the first rubber sleeve 211 and the second rubber sleeve 212 are coated in the preset position of the FPC20 during the injection molding, and the shape of the FPC20 conforms to the shape of the FPC20 when installed in the glasses, preventing the FPC20 from being exposed, attached to the edge, or misplaced, and avoiding distortion when installed in the glasses, thereby ensuring that the FPC20 can work normally in the smart glasses and the waterproof performance of the smart glasses.

[0071] In some optional embodiments, both ends of the limiting cavity extend to the corresponding side end surfaces of the lower mold 31, so that both ends of the FPC 20 can be located outside the injection mold to avoid squeezing the plug-ins at both ends of the FPC 20.

[0072] like Figure 7 As shown, in some optional embodiments, one of the upper mold 30 and the lower mold 31 is provided with a first connector 303, and the other is correspondingly provided with a first connector hole 314. The first connector 303 can be plugged into the first connector hole 314, so that the upper mold 30 and the lower mold 31 can be closed or opened conveniently and quickly.

[0073] In some optional embodiments, the press-forming part includes a first press-forming part 32 and a second press-forming part 33, and the upper mold 30 is provided with a first press-forming hole 304 and a second press-forming hole 305; one end of the first press-forming hole 304 passes through the top of the upper mold 30, and the other end is connected to the first upper mold groove 301, and the first press-forming part 32 is movably provided in the first press-forming hole 304 for pressing against the FPC 20; one end of the second press-forming hole 305 passes through the top of the upper mold 30, and the other end is connected to the second upper mold groove 302, and the second press-forming part 33 is movably provided in the second press-forming hole 305 for pressing against the FPC 20. The first pressing part 32, the second pressing part 33 and the limiting cavity cooperate to shape the FPC20 so that the shape of the FPC20 conforms to the shape of the FPC20 when installed in the glasses; after one-time injection molding and curing, liquid can be injected into the first cavity through the first pressing hole 304 to fill the material shortage caused by the occupation of the first pressing part 32, so that the first rubber sleeve 211 is adapted to the shape of the first sealing groove; liquid can be injected into the second cavity through the second pressing hole 305 to fill the material shortage caused by the occupation of the second pressing part 33, so that the second rubber sleeve 212 is adapted to the shape of the second sealing groove.

[0074] In some optional embodiments, the first pressing part 32 includes a first abutting portion 321 and a first plug-in portion 322 connected to each other, and a first step surface is provided between the first abutting portion 321 and the first plug-in portion 322. The first plug-in portion 322 is used to be plugged into and cooperate with the first pressing hole 304. The first step surface can abut against the upper end surface of the upper mold 30, thereby realizing the positioning of the working depth of the first pressing part 32, ensuring that the position and shape of the FPC20 in the first mold cavity are consistent during each injection molding, thereby improving the stability of the product quality.

[0075] The second pressing part 33 includes a second abutting portion 331 and a second plug-in portion 332 connected to each other. A second step surface is provided between the second abutting portion 331 and the second plug-in portion 332. The second plug-in portion 332 is used to be plugged into and cooperate with the second pressing hole 305. The second step surface can abut against the upper end surface of the upper mold 30, thereby achieving positioning of the working depth of the second pressing part 33, ensuring that the position and shape of the FPC 20 in the second mold cavity are consistent during each injection molding, and improving the stability of the product quality.

[0076] like Figure 8 and Figure 9 As shown, in some optional embodiments, the first insertion hole 314 is circumferentially provided with a first injection hole 306 that communicates with the first upper mold groove 301, and the second insertion hole 3164 is circumferentially provided with a second injection hole 307 that communicates with the second upper mold groove 302. The first injection hole 306 allows injection of a primary molding liquid into the first mold cavity, and the second injection hole 307 allows injection of a primary molding liquid into the second mold cavity.

[0077] In some optional embodiments, a first guide groove 308 is further provided on the upper end surface of the upper mold 30, and the bottom surface of the first guide groove 308 gradually tilts downward. The first liquid injection hole 306 is set at the lowest point of the bottom surface of the first guide groove 308. Liquid is injected into the first liquid injection hole 306 through the first guide groove 308. The first guide groove 308 guides the liquid material, which is beneficial to improving the molding efficiency of the first rubber sleeve 211 and improving the molding quality.

[0078] Similarly, a second guide groove 309 is also provided on the upper end surface of the upper mold 30, and the bottom surface of the second guide groove 309 gradually tilts downward. The second liquid injection hole 307 is set at the lowest point of the bottom surface of the second guide groove 309. Liquid is injected into the second liquid injection hole 307 through the second guide groove 309. The second guide groove 309 guides the liquid material, which is beneficial to improving the molding efficiency of the second rubber sleeve 212 and improving the molding quality.

[0079] In some optional embodiments, the upper mold 30 is further provided with an exhaust hole 310 connected to the first upper mold groove 301 and the second upper mold groove 302 respectively, for discharging the gas in the mold cavity to avoid defects such as bubbles, material shortages, and burn marks caused by gas retention, thereby improving the molding quality.

[0080] Since the shapes and structures of the first rubber sleeve 211 and the second rubber sleeve 212 are relatively complex, it is difficult to remove them after injection molding. Figure 10 and Figure 11 As shown, in some optional embodiments, the lower mold 31 includes a first lower mold 315 and a second lower mold 316, and the first parting groove 3151, the second parting groove 3152 and the first limiting groove 3153 are provided in the first lower mold 315, and the third parting groove 3161, the fourth parting groove 3162 and the second limiting groove 3163 are provided in the second lower mold 316; when the first lower mold 315 and the second lower mold 316 are closed, the first parting groove 3151 and the third parting groove 3161 are arranged to form the first lower mold groove 311, the second parting groove 3152 and the fourth parting groove 3162 are arranged to form the second lower mold groove 312, and the first limiting groove 3153 and the second limiting groove 3163 are arranged to form the limiting groove 313. By splitting the lower mold 31 into a first lower mold 315 and a second lower mold 316, the originally integrally formed complex cavity is converted into a combined cavity. When the mold is closed, the first parting groove 3151 and the third parting groove 3161, the second parting groove 3152 and the fourth parting groove 3162 are respectively spliced ​​to form a complete first lower mold groove 311 and a second lower mold groove 312, thereby ensuring the molding accuracy of the product; when the mold is opened, the first lower mold 315 and the second lower mold 316 can be disassembled and separated to provide lateral demolding space for the first rubber sleeve 211 and the second rubber sleeve 212 with complex shapes, thereby avoiding structural jamming, deformation or damage caused by overall demolding, which is beneficial to extending the service life of the mold and reducing production costs.

[0081] In some optional embodiments, one of the first lower mold 315 and the second lower mold 316 is provided with a second connector 3154, and the other one is correspondingly provided with a second connector hole 3164. The second connector 3154 can be inserted into the second connector hole 3164, so that the first lower mold 315 and the second lower mold 316 can be closed or opened conveniently and quickly.

[0082] like Figure 6 As shown, in some optional embodiments, the section of the limit cavity located between the first cavity and the second cavity is arched in an arc shape toward the upper mold 30, and the arch curvature of the section is adapted to the bending curvature of the FPC20 when the temple 11 is unfolded, so that when the first rubber sleeve 211 and the second rubber sleeve 212 are installed in the pile head 101 and the temple 11, the curvature of the FPC20 is adapted to the curvature of the hinge shaft 111, reducing the stress concentration generated by the FPC20 during the repeated unfolding and folding of the temple 11, which is beneficial to improving the fatigue life of the FPC20 and can improve the comfort and aesthetics of wearing the smart glasses.

[0083] Example 3

[0084] This embodiment provides an injection molding method for an injection mold, which is applied to the injection mold in the second embodiment and includes the following steps:

[0085] S1: Place the FPC 20 in the limiting groove 313 of the lower mold 31, and close the upper mold 30 and the lower mold 31 to form a first cavity and a second cavity, and the FPC 20 is inserted into the first cavity and the second cavity.

[0086] S2: The pressing piece is inserted into the upper mold 30 and the FPC 20 is pressed tightly against the first cavity and the second cavity, so that the FPC 20 is in a preset position and a preset shape.

[0087] S3: Injecting liquid into the first cavity and the second cavity for one-time injection molding to fix the FPC 20.

[0088] S4: When the liquid material of the first injection molding solidifies, the extrusion piece is pulled out, and the liquid material is injected into the first cavity and the second cavity again for secondary injection molding to fill the material shortage caused by the extrusion piece, so that the first rubber sleeve 211 is adapted to the shape of the first sealing groove, and the second rubber sleeve 212 is adapted to the shape of the second sealing groove.

[0089] Through the injection molding method provided in this embodiment, a first rubber sleeve 211 can be formed by covering and injection molding on the side of the FPC20 located at the pile head 101, and a second rubber sleeve 212 can be formed by covering and injection molding on the side of the FPC20 located at the temple 11. The FPC20 connected with the first rubber sleeve 211 and the second rubber sleeve 212 is installed in the smart glasses. Without affecting the flexible opening and closing of the temple 11, the sealing effect at the hinge of the temple 11 can be effectively improved, thereby improving the overall waterproof performance of the smart glasses.

[0090] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A pair of smart glasses, characterized in that: The invention comprises a spectacles frame (10), a spectacles leg (11), an FPC (20) and a rubber sleeve assembly (21), wherein the hinge shaft (111) of the spectacles leg (11) is rotatably arranged in a hinge seat (102) of a pile head (101) of the spectacles frame (10), the FPC (20) bypasses the hinge shaft (111), and two ends of the FPC (20) are respectively located in the pile head (101) and the spectacles leg (11); The rubber sleeve assembly (21) comprises: a first rubber sleeve (211) covering the FPC (20) on one side of the pile head (101); a first sealing groove is provided in the pile head (101); and the first rubber sleeve (211) is embedded in the first sealing groove; a second rubber sleeve (212) covering the FPC (20) on one side of the temple (11); a second sealing groove is provided in the temple (11); and the second rubber sleeve (212) is embedded in the second sealing groove; The first rubber sleeve (211) is provided with a clearance groove (2112), the circumferential side surface of the hinge shaft (111) is movably fitted to the inner wall of the clearance groove (2112), and the first rubber sleeve (211) is provided with a blocking portion (2113) extending outward, and when the temple (11) is unfolded, the blocking portion (2113) is clamped between the pile head (101) and the temple (11).

2. The smart glasses according to claim 1, wherein: A positioning groove is provided in the first sealing groove, and the first rubber sleeve (211) is provided with a positioning portion (2111), and the positioning portion (2111) can be snap-fitted into the positioning groove.

3. An injection mold for injection molding the rubber sleeve assembly (21) of the smart glasses according to claim 1 or 2, characterized in that: The injection mold comprises an upper mold (30), a lower mold (31) and a press part, wherein the upper mold (30) is provided with a first upper mold groove (301) and a second upper mold groove (302), and the lower mold (31) is provided with a first lower mold groove (311), a second lower mold groove (312) and a limit groove (313); When the upper mold (30) and the lower mold (31) are closed, the first upper groove (301) and the first lower groove (311) are arranged to form a first cavity for injection molding the first rubber sleeve (211), the second upper groove (302) and the second lower groove (312) are arranged to form a second cavity for injection molding the second rubber sleeve (212), the upper mold (30) and the limiting groove (313) are arranged to form a limiting cavity for accommodating the FPC (20), and the limiting cavity is communicated with the first cavity and the second cavity respectively; the pressing member is movably provided in the upper mold (30) and is configured to press the FPC (20) against the first cavity and the second cavity.

4. The injection mold according to claim 3, characterized in that The press-molded parts include a first press-molded part (32) and a second press-molded part (33); the upper die (30) is provided with a first press-molded hole (304) and a second press-molded hole (305); One end of the first pressing hole (304) passes through the top of the upper mold (30), and the other end is connected to the first upper groove (301); the first pressing piece (32) is movably provided in the first pressing hole (304) for pressing against the FPC (20); One end of the second pressing hole (305) passes through the top of the upper mold (30), and the other end is connected to the second upper groove (302). The second pressing piece (33) is movably inserted into the second pressing hole (305) to press against the FPC (20).

5. The injection mold according to claim 4, characterized in that: The first press-molded part (32) includes a first abutting portion (321) and a first plug-in portion (322) connected to each other, a first stepped surface is provided between the first abutting portion (321) and the first plug-in portion (322), the first plug-in portion (322) is used for plugging and fitting with the first press-molded hole (304), and the first stepped surface can abut against the upper end surface of the upper mold (30); The second press-forming part (33) includes a second abutting portion (331) and a second plug-in portion (332) connected to each other, and a second stepped surface is provided between the second abutting portion (331) and the second plug-in portion (332). The second plug-in portion (332) is used for plugging and fitting with the second press-forming hole (305), and the second stepped surface can abut against the upper end surface of the upper mold (30).

6. The injection mold according to claim 3, characterized in that The lower die (31) comprises a first lower die (315) and a second lower die (316); the first lower die (315) is provided with a first parting groove (3151), a second parting groove (3152) and a first limiting groove (3153); the second lower die (316) is provided with a third parting groove (3161), a fourth parting groove (3162) and a second limiting groove (3163); When the first lower mold (315) and the second lower mold (316) are closed, the first parting groove (3151) and the third parting groove (3161) are arranged to form the first lower mold groove (311), the second parting groove (3152) and the fourth parting groove (3162) are arranged to form the second lower mold groove (312), and the first limiting groove (3153) and the second limiting groove (3163) are arranged to form the limiting groove (313).

7. The injection mold according to claim 3, characterized in that: The section of the limiting cavity located between the first cavity and the second cavity is arched in an arc shape in a direction close to the upper mold (30), and the arching curvature of the section is adapted to the bending curvature of the FPC (20) when the temple (11) is in an unfolded state.

8. An injection molding method for an injection mold, characterized in that: The injection mold according to any one of claims 3 to 7 comprises the following steps: S1: placing the FPC (20) in the limiting groove (313) of the lower mold (31), and closing the upper mold (30) and the lower mold (31); S2: inserting the press-formed part into the upper mold (30) and pressing the FPC (20) into the first cavity and the second cavity; S3: injecting liquid material into the first cavity and the second cavity to perform one injection molding; S4: When the liquid material of the first injection molding is solidified, the press molded part is pulled out, and liquid material is injected into the first mold cavity and the second mold cavity again to perform secondary injection molding.

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