Light and thin flexible circuit board for smart wearable device

Abstract

The utility model discloses a light and thin flexible circuit board for intelligent wearing equipment, which comprises a circuit board and two fixing plates, the two fixing plates are respectively fixed at the two ends of the circuit board, a fitting mechanism and a driving mechanism are respectively arranged in the two fixing plates, the fitting mechanism can elastically move along the width direction of the fixing plate and is connected with the internal structure of the wearing equipment through plugging or fitting, the driving mechanism is arranged along the thickness direction of the fixing plate and can rotate in the fixing plate, when the driving mechanism rotates 90 degrees, one end of the driving mechanism abuts against one end of the fitting mechanism, and the other end of the fitting mechanism is pushed out of the fixing plate, so that the other end of the fitting mechanism is connected with the internal structure of the wearing equipment through plugging or fitting, when the driving mechanism rotates 90 degrees again, the fitting mechanism elastically moves towards the driving mechanism to reset, so that the fitting mechanism is separated from the internal structure of the wearing equipment.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, specifically to a thin and flexible circuit board for smart wearable devices. Background Technology

[0002] The flexible circuit boards of traditional smart wearable devices (such as smartwatches and fitness trackers) are usually fixed with adhesives or screws, which has significant drawbacks:

[0003] Inconvenient to disassemble and assemble: Adhesive bonding requires destructive disassembly, screw fixing requires tools, and maintenance / replacement efficiency is low;

[0004] Damage risk: Repeated disassembly and reassembly can easily lead to tearing of the flexible circuit board or deformation of the interface. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this utility model is to provide a thin and flexible circuit board for smart wearable devices, comprising: a circuit board and two fixing plates, wherein the two fixing plates are respectively fixed at both ends of the circuit board;

[0006] The two fixing plates are respectively provided with a fitting mechanism and a driving mechanism. The fitting mechanism can move elastically along the width direction of the fixing plate and can be inserted or fitted into the internal structure of the wearable device.

[0007] The driving mechanism is arranged along the thickness direction of the fixed plate and is rotatable within the fixed plate. When the driving mechanism rotates 90°, one end of the driving mechanism abuts against the fitting mechanism and pushes the other end of the fitting mechanism out of the fixed plate, so that the other end of the fitting mechanism can be inserted or fitted into the internal structure of the wearable device. When the driving mechanism rotates another 90°, the fitting mechanism elastically moves and resets towards the driving mechanism, so that the fitting mechanism disengages from the internal structure of the wearable device.

[0008] Preferably, there are two fitting mechanisms, which are spaced apart on the fixing plate.

[0009] Preferably, there are two drive mechanisms, which are spaced apart on the fixed plate.

[0010] Preferably, the fixing plate is provided with a sliding groove, which is arranged along the width direction of the fixing plate and extends through the side of the fixing plate.

[0011] Preferably, a fixing groove is provided on each side of the slide groove, the fixing groove is arranged along the width direction of the fixing plate, the fixing groove is connected to the slide groove, and the diameter of the fixing groove is smaller than the diameter of the slide groove.

[0012] Preferably, the fitting mechanism includes:

[0013] A plug post, which is slidably arranged in the chute and is slidably connected to the chute;

[0014] Two limiting blocks, which are respectively slidably arranged in the fixing grooves on both sides of the chute, and the two limiting blocks are respectively connected to both sides of the plug post;

[0015] Two springs, which are respectively arranged in the two fixing grooves, and the two springs are arranged along the width direction of the fixing plate.

[0016] Preferably, a cylindrical groove is further arranged on the fixing plate, the cylindrical groove is arranged along the thickness direction of the fixing plate, and the cylindrical groove is communicated with the chute.

[0017] Preferably, the driving mechanism includes:

[0018] A rotating shaft, which is rotatably arranged in the cylindrical groove;

[0019] A limiting groove, which is arranged on one side of the rotating shaft and is arranged along the length direction of the rotating shaft, and the side edge of the limiting groove is provided with a chamfer;

[0020] A knob, which is arranged on the rotating shaft.

[0021] Preferably, the plug post and the two limiting blocks are arranged in a "middle" shape, one end of the plug post is arranged in the chute, and the other end extends into the cylindrical groove.

[0022] Preferably, the end of the rotating shaft that abuts against the plug post is magnetically connected.

[0023] The above solution of the present utility model has at least the following beneficial effects:

[0024] The user rotates the driving mechanism by 90°, the driving mechanism presses against one end of the fitting mechanism, the fitting mechanism overcomes the elastic force and extends outwards, and the other end is inserted into the internal structure of the wearable device (such as the shell slot) to complete mechanical locking; the user rotates the driving mechanism by 90° again, the driving mechanism releases the pressure on the fitting mechanism, and the fitting mechanism relies on elastic reset to retract inwards and脱离 the internal structure of the device, realizing lossless disassembly; the whole process does not require tools, and only by rotating the driving mechanism by 180° (two 90°) to switch between the locking or unlocking state; this structure is applicable to wearable devices such as smart watches, health monitoring bracelets, VR glasses, etc. that need to be frequently disassembled or replaced with circuit boards, improving the maintenance convenience and connection reliability;

[0025] The rotating drive mechanism can lock or unlock in just 180°, greatly improving maintenance / replacement efficiency; the drive mechanism is arranged along the thickness direction of the fixed plate, and the fitting mechanism moves along the width direction, resulting in a flattened overall structure that meets the thin and light requirements of wearable devices.

[0026] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of a thin and flexible circuit board for a smart wearable device provided in this embodiment of the utility model;

[0029] Figure 2 This is a schematic diagram of the structure of the fixing plate provided in this embodiment of the utility model;

[0030] Figure 3 yes Figure 2 Enlarged view of part A;

[0031] Figure 4 yes Figure 1 A schematic diagram of the BB cross-sectional structure;

[0032] Figure 5 yes Figure 4 Enlarged view of part C;

[0033] Figure 6 yes Figure 4 Enlarged view of part D;

[0034] Figure 7 This utility model provides a schematic diagram of the fitting mechanism in its embodiments.

[0035] Explanation of icon numbers:

[0036] 1. Circuit board; 2. Fixing plate; 3. Fitting mechanism; 4. Drive mechanism;

[0037] 101. Slide groove; 102. Fixed groove; 103. Columnar groove;

[0038] 301. Insertion post; 302. Limiting block; 303. Spring;

[0039] 401. Rotating shaft; 402. Limiting groove; 403. Knob.

[0040] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 according to 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] The following describes in detail, with reference to the accompanying drawings, an embodiment of the present invention: a thin and flexible circuit board for a smart wearable device.

[0047] Please see Figures 1-7 In this embodiment, the device includes: a circuit board 1 and two fixing plates 2, which are respectively fixed at both ends of the circuit board 1; each of the two fixing plates 2 is provided with a fitting mechanism 3 and a driving mechanism 4. The fitting mechanism 3 is elastically movable along the width direction of the fixing plate 2 and can be inserted into or fitted with the internal structure of the wearable device; the driving mechanism 4 is arranged along the thickness direction of the fixing plate 2 and can rotate within the fixing plate 2. When the driving mechanism 4 rotates 90°, the driving mechanism 4 abuts against one end of the fitting mechanism 3 and pushes the other end of the fitting mechanism 3 out of the fixing plate 2, so that the other end of the fitting mechanism 3 can be inserted into or fitted with the internal structure of the wearable device. When the driving mechanism 4 rotates another 90°, the fitting mechanism 3 elastically moves and resets towards the driving mechanism 4, so that the fitting mechanism 3 disengages from the internal structure of the wearable device.

[0048] The user rotates the drive mechanism 4 90°, pressing against one end of the locking mechanism 3. The locking mechanism 3 overcomes the elastic force and extends outward, while the other end inserts into the internal structure of the wearable device (such as a housing slot), completing the mechanical locking. The user then rotates the drive mechanism 4 90° again to release the pressure on the locking mechanism 3. The locking mechanism 3 retracts inward and disengages from the internal structure of the device due to elastic reset, achieving non-destructive disassembly. The entire process requires no tools; the locking or unlocking state is switched simply by rotating the drive mechanism 4 180° (two 90° rotations). This structure is suitable for wearable devices such as smartwatches, health monitoring bracelets, and VR glasses that require frequent disassembly or replacement of the circuit board 1, improving maintenance convenience and connection reliability.

[0049] The drive mechanism 4 can be rotated 180° to lock or unlock, greatly improving maintenance / replacement efficiency; the drive mechanism 4 is arranged along the thickness direction of the fixed plate 2, and the fitting mechanism 3 moves along the width direction, resulting in a flattened overall structure that meets the thin and light requirements of wearable devices.

[0050] In this embodiment, there are two locking mechanisms 3, which are spaced apart on the fixed plate 2; there are two driving mechanisms 4, which are spaced apart on the fixed plate 2; the two sets of mechanisms are symmetrically distributed on both sides of the fixed plate 2 to form a double-point locking, which effectively resists the multidimensional torque generated during the use of the wearable device (such as wrist bending, device collision) and prevents the circuit board 1 from being disengaged on one side; each end of the circuit board 1 is provided with a double driving point, so that the locking force is evenly transmitted to the internal structure of the device, avoiding local stress concentration and significantly reducing the risk of tearing of the flexible circuit board 1 (especially in high-frequency bending scenarios); the user can trigger the synchronous action of the double locking mechanisms 3 on the same side by rotating any driving mechanism 4. Even if a single driving mechanism 4 does not rotate completely 90°, the other mechanism can still provide redundant locking force to ensure connection reliability.

[0051] In this embodiment, the fixing plate 2 is provided with a sliding groove 101, which is arranged along the width direction of the fixing plate 2 and passes through the side of the fixing plate 2; fixing grooves 102 are respectively provided on both sides of the sliding groove 101, which are arranged along the width direction of the fixing plate 2, and are connected to the sliding groove 101, and the diameter of the fixing groove 102 is smaller than the diameter of the sliding groove 101; the fitting mechanism 3 includes: a plug-in post 301, which is slidably disposed in the sliding groove 101 and slidably connected to the sliding groove 101; two limiting blocks 302, which are respectively slidably disposed in the fixing grooves 102 on both sides of the sliding groove 101, and are respectively connected to both sides of the plug-in post 301; and two springs 303, which are respectively disposed in the two fixing grooves 102 and are arranged along the width direction of the fixing plate 2.

[0052] The user rotates the drive mechanism 4 by 90°. The rotating shaft 401 presses against the insertion post 301, which extends into one end of the cylindrical groove 103. The insertion post 301 slides outward along the slide groove 101 under the thrust. The limit blocks 302 on both sides move outward synchronously within the fixed groove 102. The spring 303 is compressed and stores energy. The insertion post 301 extends out of the fixed plate 2 and inserts into the slot inside the wearable device. The limit block 302 is locked by the narrow diameter end of the fixed groove 102 to prevent it from coming out. When disassembly is required, the rotating shaft 401 rotates another 90° to release the pressure on the insertion post 301. The compressed spring 303 releases its elasticity and pushes the limit block 302 to slide inward along the fixed groove 102, causing the insertion post 301 to retract inward along the slide groove 101 and completely disengage from the device slot.

[0053] The limiting block 302 is constrained within the fixed groove 102, and the maximum extension of the plug-in post 301 is physically limited to prevent excessive ejection that could cause the mechanism to jam. The double springs 303 apply force symmetrically, ensuring that the plug-in post 301 always moves in a straight line along the slide groove 101 without any risk of skewing.

[0054] In this embodiment, a cylindrical groove 103 is further provided on the fixing plate 2. The cylindrical groove 103 is arranged along the thickness direction of the fixing plate 2 and is communicated with the sliding groove 101. The driving mechanism 4 includes: a rotating shaft 401 rotatably arranged in the cylindrical groove 103; a limiting groove 402 provided on one side of the rotating shaft 401 and arranged along the length direction of the rotating shaft 401, and the side edge of the limiting groove 402 is provided with a chamfer; a knob 403 arranged on the rotating shaft 401.

[0055] When the user operates the knob 403 to drive the rotating shaft 401 to rotate around the axis in the cylindrical groove 103, when the rotating shaft 401 rotates, the edge of the limiting groove 402 on its side contacts the end of the plug-in column 301 of the fitting mechanism 3. When rotated to 90°, the deepest point of the limiting groove 402 is aligned with the plug-in column 301, and the plug-in column 301 is free of external force. When rotated to 0° or 180°, the highest point of the edge of the limiting groove 402 pushes the plug-in column 301 to extend outward against the force of the spring 303.

[0056] The clearance between the rotating shaft 401 and the cylindrical groove 103 is ≤0.05 mm to eliminate the eccentric torque, and the chamfer of the limiting groove 402 reduces the friction to ensure that the plug-in column 301 can easily disengage from the limiting groove 402. The maximum rotation angle of the rotating shaft 401 is physically restricted by the limiting groove 402 (180° stop) to prevent interference of the mechanism caused by over-rotation.

[0057] In this embodiment, the plug-in column 301 and the two limiting blocks 302 are arranged in a "middle" shape. One end of the plug-in column 301 is arranged in the sliding groove 101, and the other end extends into the cylindrical groove 103. The "middle" shape is an integral structure. The main body of the plug-in column 301 slides in the sliding groove 101, and the extended end moves linearly in the cylindrical groove 103, thereby realizing a pure linear motion.

[0058] In this embodiment, the end of the rotating shaft 401 that abuts against the plug-in column 301 is magnetically connected. Through the magnetic connection, it is ensured that the plug-in column 301 will not rotate or move during the movement or shaking of the wearable device, ensuring that the plug-in column 301 is always fitted or plugged and fixed with the internal structure of the wearable device.

[0059] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0060] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A thin and flexible circuit board for smart wearable devices, characterized in that, Comprising: A circuit board and two fixing plates, the two fixing plates are respectively fixed at both ends of the circuit board; Two fitting mechanisms and driving mechanisms are respectively arranged in the two fixing plates. The fitting mechanism can elastically move along the width direction of the fixing plate and is in plug-in or fitting cooperation with the internal structure of the wearable device; The driving mechanism is arranged along the thickness direction of the fixing plate and can rotate within the fixing plate. When the driving mechanism rotates 90°, the driving mechanism abuts against one end of the fitting mechanism and pushes the other end of the fitting mechanism out of the fixing plate, so that the other end of the fitting mechanism is in plug-in or fitting cooperation with the internal structure of the wearable device. When the driving mechanism rotates another 90°, the fitting mechanism elastically moves and resets towards the direction close to the driving mechanism, so that the fitting mechanism disengages from the internal structure of the wearable device.

2. The thin and flexible circuit board for smart wearable devices according to claim 1, characterized in that, There are two fitting mechanisms, which are respectively arranged at intervals on the fixing plate.

3. The thin and flexible circuit board for smart wearable devices according to claim 1, characterized in that, There are two driving mechanisms, which are respectively arranged at intervals on the fixing plate.

4. The thin and flexible circuit board for smart wearable devices according to claim 1, characterized in that, A sliding groove is arranged on the fixing plate, the sliding groove is arranged along the width direction of the fixing plate, and the sliding groove penetrates through the side surface of the fixing plate.

5. The thin and flexible circuit board for smart wearable devices according to claim 4, characterized in that, Fixing grooves are respectively arranged on both sides of the sliding groove, the fixing grooves are arranged along the width direction of the fixing plate, the fixing grooves are communicated with the sliding groove, and the diameter of the fixing groove is smaller than that of the sliding groove.

6. The thin and flexible circuit board for smart wearable devices according to claim 5, characterized in that, The fitting mechanism includes: A plugging column, the plugging column is slidably arranged in the sliding groove and is slidably connected with the sliding groove; Two limiting blocks, the two limiting blocks are respectively slidably arranged in the fixing grooves on both sides of the sliding groove, and the two limiting blocks are respectively connected to both sides of the plugging column; Two springs, the two springs are respectively arranged in the two fixing grooves, and the two springs are arranged along the width direction of the fixing plate.

7. The thin and flexible circuit board for smart wearable devices according to claim 6, characterized in that, A cylindrical groove is further arranged on the fixing plate, the cylindrical groove is arranged along the thickness direction of the fixing plate, and the cylindrical groove is communicated with the sliding groove.

8. The thin and flexible circuit board for smart wearable devices according to claim 7, characterized in that, The driving mechanism includes: A rotating shaft, the rotating shaft is rotatably arranged in the cylindrical groove; A limiting groove, the limiting groove is arranged on one side of the rotating shaft and is arranged along the length direction of the rotating shaft, and the side edge of the limiting groove is provided with a chamfer; A knob, the knob is arranged on the rotating shaft.

9. The thin and flexible circuit board for smart wearable devices according to claim 7, characterized in that, The plugging column and the two limiting blocks are arranged in a "middle" shape. One end of the plugging column is arranged in the sliding groove, and the other end extends into the cylindrical groove.

10. The thin and flexible circuit board for smart wearable devices according to claim 8, characterized in that, The end of the rotating shaft that abuts against the plugging column is magnetically connected.

Images