FPC flat cable bending tool in intelligent glasses temple

Abstract

This invention relates to the field of smart glasses manufacturing equipment technology, and discloses a bending tool for the FPC cable inside the temple of smart glasses. The tool includes a double-crease forming component that presses the middle section panel of the FPC to form creases, a bending forming component that punches the middle section of the FPC downwards and bends and lifts the lower and upper sections of the panel, and a following-flipping component that synchronously bends the speaker integrated with the upper section panel. This tool, through distributed punching, first precisely creases the upper, middle, and lower sections of the FPC, and then performs a second punching and bending to shape them, preventing internal circuit breakage or hidden damage from the first punching process and ensuring the lifespan of the FPC. The following-flipping component synchronously rotates the upper section panel of the FPC, along with the integrated speaker, by 90 degrees during the second punching and bending, effectively removing the internal stress generated by the twisting deformation of the upper section panel during flipping and preventing breakage damage due to torsional deformation.

Description

Technical Field

[0001] This invention relates to the field of smart glasses manufacturing equipment technology, specifically to a tool for bending FPC cables inside the temples of smart glasses. Background Technology

[0002] As AR smart glasses evolve towards lightweight and ultra-comfortable designs, the internal space of the temples is being compressed to an extreme degree. The FPC (flexible printed circuit board), as the core carrier connecting the mainboard to the acoustic module and various sensors and electronic control modules within the temples, faces extremely high challenges in its molding process. In traditional solutions, the FPC and speaker power connectors are typically assembled in separate steps, with the FPC bent and shaped individually before the speaker wires are soldered. However, this method not only occupies valuable internal space within the temples but also easily leads to stress concentration at the FPC bending points due to multiple processes, causing micro-cracks or poor contact in the circuitry, severely affecting the stability of audio transmission and product yield.

[0003] Current mass production technology for smart glasses requires the speaker's electrical connectors (pads / leads) to be integrated with the FPC (Flexible Printed Circuit) during the design phase, allowing it to undergo precision bending and spatial flipping as a single, flexible component. The main reason is that soldering components onto a bent FPC is inconvenient, as it easily leads to spatial interference and bending deformation. This means that the FPC is bent from a flat state to a C-shaped assembly with a cross-section that fits the bottom, sides, and top of the temple's inner cavity. (Refer to the instruction manual appendix.) Figure 2 and Figure 3 Furthermore, ensuring the speaker folds 90° along with the bending surface upon completion of the folding process is crucial to prevent stress-induced torsional deformation of the FPC and speaker, thus avoiding the breakage of the internal conductive circuitry due to internal stress. This "FPC + speaker" collaborative bending and flipping process requires sub-millimeter-level precision control of the bending radius, flipping torque, and rebound force, representing a key technological bottleneck in achieving high integration and reliability of smart glasses. Currently, there are very few existing bending devices for the FPC within the temples of smart glasses. With the expanding smart glasses market, there is a need for tooling equipment that precisely bends the FPC within the temples of smart glasses, and ensures that the integrated speaker flips along with the bending angle and direction to adapt to the booming AI / AR smart glasses market and meet the demands of mass production. Summary of the Invention

[0004] The problem this invention aims to solve is: For smart glasses, the FPC inside the temple needs to be bent with sub-millimeter precision, transforming it from a flat state into a three-sided folded cross-section in a "[" shape that fits the bottom, side, and top surfaces of the temple cavity. Furthermore, the integrated horn needs to rotate according to the bending angle and direction, and the FPC tail end needs to be partially bent into a stepped shape. This invention provides a smart glasses temple horn installation tool that combines high precision, high efficiency, and a simple structure.

[0005] The technical solution adopted to solve the above problems is:

[0006] A tool for bending the FPC ribbon cable inside the temple of smart glasses is proposed, including:

[0007] A double-crease forming assembly is used to press and form creases on the middle section panel of an FPC. The double-crease forming assembly includes front and rear feed pressure tables, pressing blocks, and crease tables and flipping pressure plates that position and lock the middle section panel, upper section panel, and lower section panel of the FPC.

[0008] A bending and forming assembly is used to press the middle section of the FPC downwards and bend it to raise the lower and upper panels. The bending and forming assembly includes a bending block and a bending table that are controlled by another front and rear feed pressure table to lift and press the middle section panel of the FPC.

[0009] And a follow-up flipping assembly that drives the horn, which is integrally connected to the upper panel, to bend synchronously. The follow-up flipping assembly includes a flipping seat, a flipping block that positions and rotates the horn, a torsion spring bearing, and a lever braking structure that unlocks the flipping block to perform the flipping action. The flipping block is provided with a flipping positioning groove for positioning the horn on its inner side.

[0010] Furthermore, the forward and backward feed pressure table includes a horizontal rapid push clamp for controlling forward and backward movement, a support slide, and a vertical rapid push clamp for controlling vertical movement. The support slide is driven to slide linearly by a slider rail assembly arranged in the forward and backward direction, and its start and end positions are defined by the horizontal rapid push clamp. The support slide is provided with a vertical slider rail assembly and a vertical rapid push clamp. The vertical rapid push clamp cooperates with a pressing block or a bending block to define its start and end positions. The pressing block or bending block is controlled to slide vertically in a straight line by the vertical slider rail assembly.

[0011] Furthermore, a bending punch is provided on the lower section of the pressing block, which is directly opposite the crease table, and the bending punch presses against the middle section panel of the FPC.

[0012] Furthermore, the crease table is provided with a crease groove, an upper positioning surface, and a lower positioning surface facing the FPC to be bent. The upper and lower positioning surfaces are respectively provided with clearance grooves for the electronic control modules of the upper and lower panels of the FPC to prevent damage to the components from bumps. A bonding surface is provided for the blank parts of the upper and lower panels of the FPC. The bonding surface, together with the pressing surface of the flip-up pressure plate, presses and positions the upper and lower panels of the FPC. The crease groove has a U-shaped cross section and is arranged facing the middle panel of the FPC. The crease groove and the pressing punch of the pressing block are fully closed to bend the upper and middle panels of the FPC with the required creases.

[0013] Furthermore, a positioning groove for placing a speaker is provided on the right side of the crease table, so that the speaker can be placed freely.

[0014] Furthermore, the flipping pressure plate is movably connected via a hinged seat, and an elastic locking hook is provided on its outer side. The elastic locking hook engages with the locking block on the opposite side of the crease table. The flipping pressure plate has a pressing surface facing the blank part of the upper and lower positioning surfaces, and an avoidance hole is provided facing the direction of the pressure block's stroke. By rotating the flipping pressure plate until it is in contact with the upper and lower positioning surfaces of the crease table, and the elastic locking hook engages with the locking block, the upper and lower positioning surfaces of the FPC are pressed together, thus completing the locking of the FPC.

[0015] Furthermore, a bending pressure head is provided at the lower section of the bending block and placed above the middle section panel of the FPC. An FPC limiting groove is provided at the upper end of the bending platform, and a bending groove is provided in the middle directly opposite the middle section panel of the FPC. Inner protrusions are provided on both sides of the inner wall of the bending groove directly opposite the crease. The inner protrusions and the bending pressure head of the bending block are molded together to avoid friction damage between the electronic components on the FPC board and the inner wall of the bending groove. The bending groove is directly below the middle section panel where the crease is generated. The bending pressure head and the bending groove are molded together to squeeze the middle section panel of the FPC, completing the bending at the connection between the upper and middle sections of the FPC and the connection between the lower and middle sections of the FPC, and making the overall cross-section of the FPC after bending into a "[" shape.

[0016] Furthermore, the flipping seat is located on the right side of the bending table and is connected to the flipping block through a torsion spring bearing. In the initial state where the torsion spring bearing has no elastic torque, the flipping block, together with the horn inside which is magnetically attracted and locked by a permanent magnet, maintains a horizontal posture. When the flipping block and the horn are flipped 90 degrees to maintain a vertical posture, the torsion spring bearing maintains elastic torque and can be controlled to flip along with the bending of the upper panel of the FPC at any time.

[0017] Furthermore, the lever braking structure includes a fulcrum seat, a rocker arm, a transmission block, a locking pin, and a return spring, all disposed under the bending table. The fulcrum seat is hinged to the rocker arm, and the other end of the rocker arm is connected to the return spring. A transmission block is hinged to the middle of the rocker arm. The transmission block passes through the bending table and is positioned directly opposite the bending block. When the bending block presses down on the middle panel of the FPC to perform a bending action, it contacts the transmission block and continues to press down, providing rotational power to the rocker arm. The locking pin is hinged to the end of the rocker arm and is positioned directly opposite the outside of the flipping block. It is used to prevent the flipping block from resetting and to maintain an elastic torque state. When the rocker arm is subjected to force and swings down, the locking pin retracts downward and releases the flipping block, causing the flipping block and the horn to flip 90 degrees together with the upper panel of the flipped FPC.

[0018] Furthermore, the flipping pressure plate is provided with a stepped groove facing the tail end of the FPC. The stepped groove cooperates with the stepped bending component that pushes the tail end of the FPC obliquely to press and close it, so as to form a stepped crease and make the tail end of the FPC fit against the inner cavity surface of the temple.

[0019] Furthermore, the stepped bending assembly includes an inclined push seat, an inclined push slide, an inclined slider rail assembly that limits the inclined push slide to slide in an inclined straight direction, and a quick push clamp. A contour push head is provided above the inclined push slide and directly opposite the stepped groove. After the contour push head is tightly fitted with the stepped groove, it bends the tail end of the FPC. The quick push clamp controls the start and end positions of the contour push head.

[0020] The beneficial effects of this invention are:

[0021] 1. The FPC cable bending tool inside the temple of this smart glasses uses a distributed stamping method to first make precise creases on the upper, middle and lower sections of the FPC panel, and then perform a second stamping and bending to shape it. This prevents the internal circuit from being broken or causing hidden damage during the first stamping process, thus ensuring the service life of the FPC.

[0022] 2. The upper panel of the FPC is connected to the speaker, which is connected to it. During the second stamping and bending, the upper panel is rotated 90 degrees simultaneously under force. This can effectively remove the internal stress caused by the torsional deformation of the upper panel during the rotation and prevent breakage damage caused by torsional deformation.

[0023] 3. By utilizing the front and rear feed pressure table to control the front and rear clearance and up and down pressing actions of both crease and bending processes, it is possible to facilitate the picking and placing of FPC and improve the convenience of manual operation in the process.

[0024] 4. By using a lever braking structure as a physical solution to control the timing of the flipping block's flipping, and the synchronous action of the transmission block, the bending block performs the bending action of the FPC synchronously. The synchronous control is precise, and the two flip together in a very short time, making the mechanism stable and reliable.

[0025] 5. The bending table is set with a bending groove in the middle of the FPC middle panel and the bending pressure head closes the mold to extrude the middle panel, which can complete the bending of the connection between the upper panel and the middle panel and the connection between the lower panel and the middle panel of the FPC. The overall cross section of the FPC after bending is "[", which is formed in one step, reducing the number of processes and combining the design advantages of high precision, high efficiency and simple structure.

[0026] 6. The bending head of the bending block and the inner protrusions on both sides of the inner wall of the bending groove are used to complete the mold closing. The crease can be fully folded to the required angle. At the same time, it ensures that the upper and lower panels of the FPC that are flipped up do not come into contact with the inner wall of the bending groove and wear, thus ensuring the safety and reliability of the FPC in the bending process. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the FPC cable bending tool inside the temple of the smart glasses in this embodiment;

[0028] Figure 2 This is a schematic diagram of the FPC structure described in this embodiment;

[0029] Figure 3 This is a structural diagram of the FPC bent into a "[" shape as described in this embodiment;

[0030] Figure 4 This is a top front view of the FPC positioned by the crease table and flipping pressure plate described in this embodiment;

[0031] Figure 5 This is a rear top view of the FPC positioned by the crease table and flipping pressure plate described in this embodiment;

[0032] Figure 6 This is a schematic diagram of the structure of the flip plate pressing the FPC onto the crease table as described in this embodiment;

[0033] Figure 7 This is a side-view of the stepped bending assembly described in this embodiment;

[0034] Figure 8 for Figure 7 A magnified view of a section at point A in the middle;

[0035] Figure 9 This is a top side view of the bending and forming component described in this embodiment;

[0036] Figure 10 This is a top view of the bending and forming assembly described in this embodiment performing a pressing and bending operation on the FPC.

[0037] Figure 11 This is a rear top view of the bending and forming component described in this embodiment;

[0038] Figure 12 This is a top view of the bending and forming assembly described in this embodiment, showing the FPC being pressed and bent.

[0039] Figure 13 This is a schematic diagram showing the state of the FPC being bent on the bending table as described in this embodiment;

[0040] Figure 14 for Figure 13 A magnified view of a section at point B in the middle;

[0041] Figure 15 This is a schematic diagram of the lever braking structure described in this embodiment;

[0042] The components are: 1-Workbench, 2-Folding frame, 3-First front and rear feed pressure table, 301-Pressing block, 4-Double folding forming assembly, 401-Folding table, 4011-Positioning groove, 4012-Upper positioning surface, 4013-Lower positioning surface, 4014-Folding groove, 402-Flipping pressure plate, 4021-Pressing surface, 4022-Pre-locking permanent magnet, 4023-Avoidance hole, 4024-Stepped groove, 403-Elastic locking hook, 404-Hinge seat, 405-Locking block, 5-Stepped bending assembly, 501-Angled push seat, 502-Angled push slide, 5021-Contouring push head, 6-Bending frame, 7-Second front and rear feed pressure table, 701-Positioning block of bending block, 702 - Vertical quick-release clamp, 703- Support slide, 704- Horizontal quick-release clamp, 705- Bending block, 8- Bending forming component, 801- Bending table, 8011- Bending groove, 8012- FPC limiting groove, 8013- Front inner protrusion, 8014- Rear inner protrusion, 802- Flipping block, 8021- Flipping positioning groove, 803- Flipping seat, 804- Torsion spring bearing, 805- Tension spring, 806- Rocker arm, 807- Pivot seat, 808- Transmission block, 809- Locking pin, 9- FPC, 901- Upper panel, 902- Middle panel, 903- Lower panel, 904- Crease line, 905- Horn, 906- Stepped crease, 9061- FPC tail end. Detailed Implementation

[0043] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. For ease of description, only the parts related to the present invention are shown in the drawings, not the entire structure.

[0044] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0047] Please see Figure 1 This embodiment proposes a bending tool for the FPC cable inside the temple of smart glasses. This tool was developed for the need to fold the upper panel 901, middle panel 902, and lower panel 903 of the FPC9 inside the temple of smart glasses into a "[" shape. It includes a double crease forming component 4 for pressing the middle panel 902 of the FPC9 to form a crease, a bending forming component 8 for pressing the middle panel 902 of the FPC9 downward and bending and raising the lower panel 903 and the upper panel 901, and a follow-flipping component for driving the speaker 905, which is integrally connected to the upper panel 901, to bend synchronously.

[0048] See Figure 1 , Figure 4 , Figure 5 and Figure 6 The double crease forming assembly 4 is set on the crease frame 2 of the workbench 1, including a first front and rear feed pressure table 3, a pressing block 301, and a crease table 401 and a flipping pressure plate 402 that positions and locks the middle panel 902, the upper panel 901 and the lower panel 903 of the FPC9.

[0049] Specifically, see Figure 1The first forward and backward feed pressure table 3 includes a horizontal rapid push clamp 704 for controlling forward and backward movement, a support slide 703, and a vertical rapid push clamp 702 for controlling vertical movement. The support slide 703 is driven to slide linearly by a slider rail assembly arranged in the forward and backward direction, and its start and end positions are defined by the horizontal rapid push clamp 704. The support slide 703 is provided with a vertical slider rail assembly and a vertical rapid push clamp 702. The vertical rapid push clamp 702 cooperates with the pressing block 301 to define its start and end positions. The pressing block 301 is controlled to slide vertically in a straight line by the vertical slider rail assembly.

[0050] As a further embodiment, the lower section of the pressing block 301 is provided with a bending punch facing the crease table 401, and the bending punch presses against the middle section panel 902 of the FPC9.

[0051] As a further solution to this embodiment, see [reference]. Figure 4 and Figure 5 The crease table 401 is provided with a crease groove 4014, an upper positioning surface 4012 and a lower positioning surface 4013 facing the FPC9 to be bent. The upper positioning surface 4012 and the lower positioning surface 4013 are respectively provided with clearance grooves for the electronic control modules of the upper panel 901 and the lower panel 903 of the FPC9 to prevent bumps and damage to the components.

[0052] More specifically, the crease table 401 is provided with a bonding surface corresponding to the blank parts of the upper panel 901 and the lower panel 903 of the FPC9. The bonding surface, together with the pressing surface provided by the flipping pressure plate 402, presses and positions the upper panel 901 and the lower panel 903 of the FPC9.

[0053] The particularly important technical solution is, see [reference] Figure 4 The crease groove 4014 has a U-shaped cross section and is arranged opposite to the middle panel 902 of the FPC9. The crease groove 4014 and the pressing punch of the pressing block 301 are fully closed, bending the upper panel 901 and the middle panel 902 of the FPC9 and the lower panel 903 and the middle panel 902 to form the required crease line 904.

[0054] It should be noted that the right side of the crease table 401 is provided with a positioning groove 4011 for placing the speaker 905, so that the speaker 905 can be placed freely. The speaker 905 is soldered to the upper panel 901 of the FPC9 and needs to be rotated synchronously with the bending direction and bending angle of the upper panel 901 to the required angle.

[0055] As an important technical solution in this embodiment, see [link / reference]. Figure 4 and Figure 6The flipping pressure plate 402 is movably connected via a hinge seat 404, and an elastic locking hook 403 is provided on its outer side. The elastic locking hook 403 engages with the locking block 405 on the opposite side of the crease table 401. The flipping pressure plate 402 has a pressing surface 4021 on the blank part of the upper positioning surface 4012 and the lower positioning surface 4013. A pre-locked permanent magnet 4022 is provided in the pressing surface 4021, which is magnetically attracted to the crease table 401. The flipping pressure plate 402 and the crease table 401 are pre-locked, and the clearance hole 4023 is set in the direction of the travel of the pressing block 301. By rotating the flipping pressure plate 402 until it fits against the upper positioning surface 4012 and the lower positioning surface 4013 of the crease table 401, and the elastic locking hook 403 engages with the locking block 405, the upper positioning surface 4012 and the lower positioning surface 4013 of the FPC9 are pressed together, thus completing the locking of the FPC9.

[0056] After completing the pre-bending crease treatment at the connection between the upper panel 901 and the middle panel 902, and at the connection between the lower panel 903 and the middle panel 902 of the FPC9, the FPC9 is then transferred to the bending and forming assembly 8.

[0057] As a further solution to this embodiment, see [reference]. Figure 9 , Figure 10 , Figure 11 The bending forming component 8 includes a bending frame 6 mounted on the workbench 1, and includes a bending block 705 and a bending table 801 that are controlled by a second front and rear feed pressure table 7 to lift and press the middle section panel 902 of the FPC9.

[0058] Further implementation plans are as follows, see [link / reference] Figure 9 The second forward and backward feed pressure table 7 includes a horizontal rapid push clamp 704 for controlling forward and backward movement, a support slide 703, and a vertical rapid push clamp 702 for controlling vertical movement. The support slide 703 is driven to slide linearly by a slider rail assembly arranged in the forward and backward direction, and its start and end positions are defined by the horizontal rapid push clamp 704. The support slide 703 is equipped with a vertical slider rail assembly and a vertical rapid push clamp 702. The vertical rapid push clamp 702 cooperates with the positioning block 701 of the bending block 705 to define the start and end positions of the bending block 705. The bending block 705 is controlled to slide vertically in a straight line by the vertical slider rail assembly. Through the movement control of the second forward and backward feed pressure table 7, the space above the bending table 801 can be easily released and cleared, facilitating the loading and unloading of the FPC9.

[0059] The most important implementation plan is to refer to Figure 13 and Figure 14The lower section of the bending block 705 is provided with a bending pressure head, which is positioned above the middle panel 902 of the FPC9. The upper end of the bending table 801 is provided with an FPC9 limiting groove 8012, and the middle section of the bending table 801 is provided with a bending groove 8011 directly opposite the middle panel 902 of the FPC9. Inner protrusions, namely a front inner protrusion 8013 and a rear inner protrusion 8014, are provided on both sides of the inner wall of the bending groove, directly opposite the crease line 904. The inner protrusions are engaged with the bending pressure head of the bending block 705 to avoid FPC9 bending. The electronic components on the PC9 board are damaged by friction against the inner wall of the bending groove 8011. The bending groove 8011 is directly below the middle panel 902 where the crease is generated. The bending head and the bending groove 8011 are pressed together to squeeze the middle panel 902 of the FPC9, completing the bending at the connection between the upper panel 901 and the middle panel 902, and the connection between the lower panel 903 and the middle panel 902, so that the overall cross section of the FPC9 after bending is in the shape of "[".

[0060] As a further embodiment, see [reference]. Figure 10 and Figure 12 The following flipping assembly includes a flipping seat 803, a rotating flipping block 802 with a positioning horn 905, a torsion spring bearing 804, and a lever braking structure for unlocking the flipping block 802 to perform the flipping action. The flipping block 802 is provided with a flipping positioning groove 8021 for the positioning horn 905 on its inner side.

[0061] More specifically, see Figure 9 , Figure 10 , Figure 11 and Figure 12 In order to allow the speaker 905 to flip together with the upper panel 901, the flipping seat 803 is located on the right side of the bending table 801 and is connected to the flipping block 802 through a torsion spring bearing 804. In the initial state where the torsion spring bearing 804 has no elastic torque, the flipping block 802, together with the speaker 905 which is magnetically attracted and locked by the permanent magnet, maintains a horizontal posture. When the flipping block 802 and the speaker 905 are flipped 90 degrees and maintain a vertical posture, the torsion spring bearing 804 maintains elastic torque and is controlled to flip along with the bending of the upper panel 901 of the FPC9. By utilizing the rebound force of the torsion spring bearing 804, the flipping block 802 is driven to rotate. During the same time period when the bending block 705 is stably pressing and bending the crease line 904, the flipping block 802 simultaneously completes the follow-up flipping of the speaker 905, ensuring the synchronous action between the upper panel 901 and the speaker 905. This effectively solves the problems of twisting, deformation, breakage, and open circuit caused by bending the upper panel 901 of the FPC9 alone while neglecting the need for the speaker 905 to be flipped synchronously at the same time.

[0062] The particularly important technical solution is, see [reference] Figure 13 , Figure 15The lever braking structure includes a fulcrum seat 807, a rocker arm 806, a transmission block 808, a locking pin 809, and a return spring 805, all disposed under the bending table 801. The fulcrum seat 807 is hinged to the rocker arm 806, and the other end of the rocker arm 806 is connected to the return spring 805. The transmission block 808 is hinged to the middle of the rocker arm 806. The transmission block 808 passes through the bending table 801 and is arranged opposite to the bending block 705. The bending block 705 presses against the middle section panel 902 of the FPC9 to perform bending. During the folding action, the rocker arm 806 is contacted and continuously pressed down, providing rotational power to the rocker arm 806. The locking pin 809 is hinged at the end of the rocker arm 806 and is positioned directly opposite the outside of the flip block 802. It is used to prevent the flip block 802 from resetting and to maintain an elastic torque state. When the rocker arm 806 is subjected to force and swings down, the locking pin 809 retracts downward and releases the flip block 802, causing the flip block 802, along with the horn 905, to flip 90 degrees together with the upper panel 901 of the flipped FPC9.

[0063] The flipping pressure plate 402 is provided with a stepped groove 4024 facing the tail end of the FPC9. The stepped groove 4024 cooperates with the stepped bending component 5 that pushes the tail end of the FPC9 at an angle to push and press together to form a stepped crease 906, so that the tail end of the FPC9 fits against the inner cavity surface of the temple.

[0064] For the preferred solution, please refer to Figure 7 and Figure 8 The tool also includes a stepped bending component 5, which includes an inclined push seat 501, an inclined push slide 502, an inclined slider rail assembly that limits the inclined push slide 502 to slide in an inclined straight direction, and a quick push clamp. A contour push head 5021 is provided above the inclined push slide 502 and directly opposite the stepped groove 4024. After the contour push head 5021 is tightly fitted with the stepped groove 4024, it bends the tail end of the FPC9. The quick push clamp controls the start and end positions of the contour push head 5021.

[0065] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the claims of the present invention.

Claims

1. A tool for bending FPC ribbon cable in a temple of smart glasses, characterized in that: include A double crease forming assembly (4) is used to press the middle section panel (902) of the FPC (9) to form a crease. The double crease forming assembly (4) includes a front and rear feed pressing table, a pressing block (301), and a crease table (401) and a flipping pressing plate (402) for positioning and locking the middle section panel (902), upper section panel (901) and lower section panel (903) of the FPC (9). A positioning groove (4011) for placing a speaker (905) is provided on the right side of the crease table (401). The bending forming assembly (8) is used to press the middle section panel (902) of the FPC (9) downward and bend and lift the lower section panel (903) and the upper section panel (901). The bending forming assembly (8) includes a bending block (705) and a bending table (801) that are controlled by another front and rear feed pressure table to lift and press the middle section panel (902) of the FPC (9). And a follow-up flip assembly that drives the horn (905) which is integrally connected to the upper panel (901) to bend synchronously. The follow-up flip assembly includes a flip base (803), a flip block (802) that positions the horn (905) and rotates, a torsion spring bearing (804), and a lever braking structure that unlocks the flip block (802) to perform the flipping action. The flip block (802) is provided with a flip positioning groove (8021) for positioning the horn (905) on its inner side.

2. The smart glasses temple FPC ribbon cable bending tool inside the glasses according to claim 1, characterized in that: The forward and backward feed pressure table includes a horizontal fast push clamp (704) for controlling forward and backward movement, a support slide (703), and a vertical fast push clamp (702) for controlling vertical movement. The support slide (703) is driven to slide linearly by a slider rail assembly arranged in the forward and backward direction, and its start and end positions are defined by the horizontal fast push clamp (704). The support slide (703) is provided with a vertical slider rail assembly and a vertical fast push clamp (702). The vertical fast push clamp (702) cooperates with a pressing block (301) or a bending block (705) to define its start and end positions. The pressing block (301) or the bending block (705) is controlled to slide vertically in a straight line by the vertical slider rail assembly.

3. The smart glasses temple FPC ribbon cable bending tool inside the glasses according to claim 1, characterized in that: The lower section of the pressing block (301) is provided with a bending punch facing the crease table (401), and the bending punch presses against the middle section panel (902) of the FPC (9).

4. The smart glasses temple FPC ribbon cable bending tool inside the glasses according to claim 1, characterized in that: The crease table (401) is provided with a crease groove (4014), an upper positioning surface (4012), and a lower positioning surface (4013) facing the FPC (9) to be bent. The upper positioning surface (4012) and the lower positioning surface (4013) are respectively provided with clearance grooves for the electronic control modules of the upper panel (901) and the lower panel (903) of the FPC (9). The bonding surface is provided with a bonding surface corresponding to the blank part of the upper panel (901) and the lower panel (903) of the FPC (9). The bonding surface cooperates with the flip pressure plate. (402) The pressing surface sets up to press and position the upper panel (901) and lower panel (903) of FPC (9). The crease groove (4014) has a U-shaped cross section and is arranged opposite to the middle panel (902) of FPC (9). The crease groove (4014) and the pressing punch of the pressing block (301) are fully closed to bend the upper panel (901) and the middle panel (902) of FPC (9) and the lower panel (903) and the middle panel (902) of FPC (9) to form the required crease.

5. The FPC cable bending tool inside the temple of smart glasses according to claim 1, characterized in that: The flip-over pressure plate (402) is movably connected by a hinge seat (404), and an elastic locking hook (403) is provided on its outer side. The elastic locking hook (403) engages with the locking block (405) on the opposite side of the crease table (401). The flip-over pressure plate (402) is provided with a pressing surface (4021) facing the blank part of the upper positioning surface (4012) and the lower positioning surface (4013), and a clearance hole (4023) is provided facing the travel direction of the pressing block (301). By rotating the flip-over pressure plate (402) to fit against the upper positioning surface (4012) and the lower positioning surface (4013) of the crease table (401), and the elastic locking hook (403) engages with the locking block (405), the upper positioning surface (4012) and the lower positioning surface (4013) of the FPC (9) are pressed together, thus completing the locking of the FPC (9).

6. The tool for bending the FPC cable inside the temple of smart glasses according to claim 1, characterized in that: The lower section of the bending block (705) is provided with a bending pressure head, which is placed above the middle section panel (902) of the FPC (9). The upper end of the bending table (801) is provided with an FPC (9) limiting groove (8012). The middle section panel (902) of the FPC (9) is provided with a bending groove (8011) in the middle. The inner walls of the bending groove are provided with inner protrusions on both sides facing the crease. The inner protrusions are engaged with the bending pressure head of the bending block (705) in a mold-fitting manner. The folding groove (8011) is directly below the middle panel (902) where the fold is generated. The bending head and the bending groove (8011) are used to press the middle panel (902) of the FPC (9) together, thus completing the bending at the connection between the upper panel (901) and the middle panel (902) of the FPC (9) and the connection between the lower panel (903) and the middle panel (902), and making the overall cross section of the FPC (9) after bending into the shape of "[".

7. The tool for bending the FPC cable inside the temple of smart glasses according to claim 1, characterized in that: The flipping seat (803) is located on the right side of the bending table (801) and is connected to the flipping block (802) through a torsion spring bearing (804). In the initial state where the torsion spring bearing (804) has no elastic torque, the flipping block (802) together with the horn (905) inside it that is magnetically attracted and locked by a permanent magnet maintains a horizontal posture. When the flipping block (802) together with the horn (905) flips 90 degrees and maintains a vertical posture, the torsion spring bearing (804) maintains elastic torque and is controlled to flip along with the bending of the upper panel of the FPC (9).

8. The FPC cable bending tool inside the temple of smart glasses according to claim 1, characterized in that: The lever braking structure includes a fulcrum seat (807), a rocker arm (806), a transmission block (808), a locking pin (809), and a return spring (805) set under the bending table (801). The fulcrum seat (807) is hinged to the rocker arm (806), and the other end of the rocker arm (806) is connected to the return spring (805). The transmission block (808) is hinged to the middle of the rocker arm (806). The transmission block (808) passes through the bending table (801) and is arranged opposite to the bending block (705). When the bending block (705) presses the middle panel (902) of the FPC (9) to perform the bending action, it contacts the transmission block (808) and continues to press down, providing rotational power to the rocker arm (806). The locking pin (809) is hinged to the end of the rocker arm (806) to prevent the flipping block (802) from resetting.

9. The tool for bending the FPC cable inside the temple of smart glasses according to claim 1, characterized in that: The flip plate (402) is provided with a stepped groove (4024) facing the tail end of the FPC (9). The stepped groove (4024) cooperates with the stepped bending component (5) that pushes the tail end of the FPC (9) at an angle to press and form a stepped crease (906).

10. The FPC cable bending tool inside the temple of smart glasses according to claim 9, characterized in that: The stepped bending assembly (5) includes an inclined push seat (501), an inclined push slide (502), an inclined slider rail assembly that limits the inclined push slide (502) to slide in an inclined straight line, and a quick push clamp. The inclined push slide (5022) is provided with a contour push head (5021) directly above the stepped groove (4024). After the contour push head (5021) is tightly fitted with the stepped groove (4024), it bends the tail end of the FPC (9). The quick push clamp controls the start and end positions of the contour push head (5021).

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