Wearable device
By introducing support components to connect flexible circuit boards and circuit boards in wearable devices, the problem of flexible circuit boards climbing walls is solved, welding stability and overall structural compactness of the device are improved, and battery protection and charging efficiency are enhanced.
Patent Information
- Application Number
- PCT/CN2024/111007
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-12-29
- Filing Date
- 2024-08-09
- Publication Date
- 2026-01-02
AI Technical Summary
In wearable devices, flexible circuit boards suffer from wall-climbing problems and unreliable soldering due to space constraints, affecting the stability of circuit connections and the overall size of the device.
By introducing a first support member into the wearable device to connect the flexible circuit board and the second circuit board, a gap is ensured between the flexible circuit board and the second circuit board along the arrangement direction, preventing the flexible circuit board from climbing over walls when extending from one cavity to another, and improving the welding stability through the support member.
It effectively reduces the wall climbing height of flexible circuit boards, improves welding reliability, reduces the overall size and visual bulkiness of the equipment, and enhances battery protection and charging efficiency.
Smart Images
Figure CN2024111007_02012026_PF_FP_ABST
Abstract
Description
Wearable device
[0001] Cross Reference to Related Applications
[0002] This application claims priority to the application filed on December 29, 2023 in the China Patent Office, application number 202311841643.4, entitled "Wearable device", the entire content of which is incorporated herein by reference. TECHNICAL FIELD
[0003] Embodiments of the present application relate to the technical field of terminals, and in particular to a wearable device. BACKGROUND
[0004] A wearable device 200, such as a watch, as shown in FIGS. 1 and 2, to achieve miniaturization, a part of the housing 201 of the wearable device 200 is provided with a protrusion 203 to accommodate a charging adsorption magnet, a photoplethysmography (PPG) module, an electrocardiogram (ECG) module, and the like structure, the circuit of which is integrated and connected on a circuit board 205, which is connected with a flexible circuit board 207 inside the protrusion 203, and then extended to the outside of the protrusion 203 through the flexible circuit board 207 to connect with the mainboard 209 of the device, so as to realize the signal connection between the circuit board 205 and the mainboard 209; due to the small space of the rear shell protrusion 203, the flexible circuit board 207 and the circuit board 205 are usually connected by welding methods such as laser welding or hot bar welding, but when the flexible circuit board 207 extends from the protrusion 203 to the outside of the protrusion 203, there is a size difference in the arrangement direction, which causes the flexible circuit board 207 to have a wall climbing problem, and there is a risk of unreliable welding.
[0005] SUMMARY
[0006] Therefore, the present application provides a wearable device for reducing the wall climbing height of the flexible circuit board.
[0007] The present application provides a wearable device. The wearable device comprises a housing, a first circuit board, a second circuit board, a flexible circuit board, and a first support. The housing is provided with a first cavity and a second cavity arranged in sequence and in communication. The first circuit board is arranged in the first cavity. The second circuit board is arranged in the second cavity and is provided with a first connecting portion. The flexible circuit board is connected and electrically conductive with the first circuit board, and the flexible circuit board is provided with a second connecting portion; the first support is connected between the first connecting portion and the second connecting portion, so that the second circuit board and the flexible circuit board are electrically conductive and have a spacing along the arrangement direction of the second cavity and the first cavity.
[0008] In the wearable device, the first support member allows the flexible circuit board and the second circuit board to have a spacing along the arrangement direction of the first cavity and the second cavity, the flexible circuit board is supported by the first support member in a direction from the second cavity to the first cavity, so that the first flexible circuit board is located in the first cavity, or the position of the first flexible circuit board in the second cavity is raised. When the first flexible circuit board is located in the first cavity, the flexible circuit board does not need to extend from the second cavity to the first cavity and pass through the junction of the first cavity and the second cavity to form a climbing section, thereby avoiding the climbing problem of the flexible circuit board. When the second connecting portion of the flexible circuit board is located in the second cavity, the spacing between the flexible circuit board and the junction of the first cavity and the second cavity is reduced, thereby reducing the climbing height of the flexible circuit board from the second cavity to the first cavity.
[0009] In a possible implementation, the wearable device further includes a plurality of first elements. The plurality of first elements are respectively connected to a side of the flexible circuit board facing the second circuit board.
[0010] In the above implementation, the plurality of first elements are respectively connected to the flexible circuit board and located at a side of the flexible circuit board facing the second circuit board. The plurality of first elements can utilize the space of the second cavity to reduce or avoid the plurality of first elements on the flexible circuit board occupying the space of the first cavity, thereby avoiding increasing the overall size of the wearable device along the arrangement direction.
[0011] In a possible implementation, the wearable device further includes a plurality of second elements, and the plurality of second elements are respectively connected to a side of the second circuit board facing the flexible circuit board.
[0012] In the above implementation, the plurality of first elements and the plurality of second elements are arranged opposite to each other in the space formed between the flexible circuit board and the second circuit board and supported by the first support member, thereby reducing the space of the first cavity along the arrangement direction and effectively reducing the size of the wearable device along the arrangement direction.
[0013] In a possible implementation, the spacing between the flexible circuit board and the second circuit board along the arrangement direction is less than the sum of the maximum value of the size of the plurality of first elements along the arrangement direction and the minimum value of the size of the plurality of second elements along the arrangement direction; and / or the spacing between the flexible circuit board and the second circuit board along the arrangement direction is less than the sum of the minimum value of the size of the plurality of first elements along the arrangement direction and the maximum value of the size of the plurality of second elements along the arrangement direction; and / or when the sizes of the first elements and the second elements along the arrangement direction are less than the spacing between the flexible circuit board and the second circuit board, the projections of the first elements and the second elements on the second circuit board along the arrangement direction intersect.
[0014] In the above embodiment, the distance between the flexible circuit board and the second circuit board is less than the sum of the maximum value of the size of the first elements along the arrangement direction and the minimum value of the size of the second elements along the arrangement direction, or less than the sum of the minimum value of the size of the first elements along the arrangement direction and the maximum value of the size of the second elements along the arrangement direction, so that the first element or the second element with the maximum value of the size along the arrangement direction is not arranged in a stacked manner along the arrangement direction, so as to make the distance between the flexible circuit board and the second circuit board as small as possible, thereby reducing the size of the wearable device along the arrangement direction. When the size of the first element and the second element along the arrangement direction is less than the distance between the flexible circuit board and the second circuit board, the stacked arrangement is adopted, so as to reduce the occupied area in the plane perpendicular to the thickness direction, so as to fully utilize the space of the second circuit board and the flexible circuit board along the arrangement direction.
[0015] In a possible implementation, the wearable device further includes a connecting member. The connecting member is attached between the first element and the second element. And / or the connecting member is attached between the first element and the second circuit board. And / or the connecting member is attached between the second element and the flexible circuit board.
[0016] In the above embodiment, the flexible circuit board and the second connecting member are connected through the connecting member, so as to improve the connection reliability and reduce the movement of the flexible circuit board.
[0017] In a possible implementation, the flexible circuit board includes a first section and a second section connected in sequence. The second section extends to one side of the first section, so as to be connected to the first circuit board; and the second connecting portion is arranged on the first section. The first section is in a flattened state.
[0018] In the above embodiment, the first section is in a flattened state, so as to avoid the wall-climbing problem caused by the bending extension of the first section between the first cavity and the second cavity. The first section of the flexible circuit board is in a flattened state, so as to reduce the space occupied by the first section of the flexible circuit board along the arrangement direction on the side of the battery away from the first circuit board.
[0019] In a possible implementation, the wearable device further includes a battery. The battery is arranged in the first cavity and located between the first circuit board and the second circuit board. The side of the flexible circuit board away from the plurality of first elements faces the battery.
[0020] In the above embodiment, the plurality of first elements and the battery are separated by the flexible circuit board, so as to avoid the damage caused by the collision between the first element and the battery when the first element and the flexible circuit board are separated by an external force, thereby protecting the battery and the first element and improving the safety of the battery.
[0021] In a possible implementation, the flexible circuit board further comprises a plurality of fourth sections, the fourth sections are connected to the first sections and respectively extend to the periphery of the second cavity. The wearable device further comprises a plurality of third elements, the plurality of third elements are respectively arranged in the first cavity and located at the periphery of the second cavity, and each fourth section is connected to one third element.
[0022] In the above implementation, the first support member elevates the position of the flexible circuit board relative to the second cavity along the arrangement direction, which can also reduce the wall climbing height of the fourth sections of the flexible circuit board connected to the third elements, reduce the movement range of the fourth sections, and reduce the risk of wrinkles caused by the movement of the fourth sections under stress.
[0023] In a possible implementation, the first support member extends along the arrangement direction and is perpendicular to the first connection part and the second connection part.
[0024] In the above implementation, the first support member extends along the arrangement direction and is perpendicular to the first connection part and the second connection part, which can reduce the occupied area of the first support member in the plane perpendicular to the arrangement direction, and increase the space for arranging elements between the second circuit board and the flexible circuit board.
[0025] In a possible implementation, the wearable device further comprises a charging coil. The charging coil is located in the second cavity and surrounds the periphery of the plurality of first elements, and is connected to the second circuit board.
[0026] In the above implementation, the charging coil is located in the second cavity, which can reduce the size of the second circuit board to leave space for accommodating the charging coil in the second cavity. The charging coil does not occupy the size of the first cavity, that is, the charging coil does not increase the size of the first cavity along the arrangement direction, which reduces the visual thickness of the wearable device.
[0027] In a possible implementation, the wearable device further comprises a magnet, the magnet is arranged on the second circuit board and located in the second cavity, and the magnet is configured to attract a charging device.
[0028] In the above implementation, the magnet can position the wearable device on a charging device, and the cooperation of the charging coil of the wearable device and the coil of the charging device can improve the charging efficiency.
[0029] In a possible implementation, the wearable device further comprises a second support member, the second support member is connected to the flexible circuit board or the second circuit board and is supported between the flexible circuit board and the second circuit board. The second support member is arranged apart from the first support member and is respectively located close to the edge of the second circuit board.
[0030] In the above embodiment, the first support and the second support are supported between the second circuit board and the flexible circuit board, and provide support force for the flexible circuit board and the second circuit board under external force, thereby improving the space stability between the flexible circuit board and the second circuit board, and improving the reliability of the plurality of first elements and the plurality of second elements arranged in the space.
[0031] In a possible embodiment, the first support is provided with a plurality of pads on both sides thereof, and the plurality of pads are arranged near the edge of the second circuit board in the projection direction of the second circuit board, and the plurality of pads are respectively welded with the second connecting part and the second circuit board.
[0032] In the above embodiment, when the flexible circuit board does not have a wall-climbing segment near the second connecting part, the projection of the plurality of pads on the second circuit board in the arrangement direction can be arranged near the edge of the second circuit board, thereby improving the density of the welding sites of the second circuit board, and facilitating the reduction of the size of the second circuit board. BRIEF DESCRIPTION OF DRAWINGS
[0033] FIG. 1 is a cross-sectional view of a wearable device according to the prior art.
[0034] FIG. 2 is a partial view of the structure in the protrusion of the wearable device shown in FIG. 1 and the welding of the flexible circuit board.
[0035] FIG. 3 is a partial top view of the flexible circuit board and the circuit board shown in FIG. 2.
[0036] FIG. 4 is a partial cross-sectional view of a wearable device according to an embodiment of the present application.
[0037] FIG. 5 is an assembly view of the flexible circuit board, the second circuit board, the first support, the second support, the first elements, and the second elements of the wearable device shown in FIG. 4.
[0038] FIG. 6 is a partial view of the structure in the second cavity of the wearable device shown in FIG. 4 and the welding of the flexible circuit board.
[0039] FIG. 7 is a partial view of the wearable device shown in FIG. 6 in another embodiment.
[0040] FIG. 8 is a partial view of the wearable device shown in FIG. 6 in yet another embodiment.
[0041] FIG. 9 is a view of the wearable device shown in FIG. 6 in another embodiment, in which the flexible circuit board is provided with a first accommodating hole.
[0042] FIG. 10 is a view of the wearable device shown in FIG. 6 in another embodiment, in which the second circuit board is provided with a second accommodating hole.
[0043] FIG. 11 is a view of the projection of the first elements and the second elements on the second circuit board in the wearable device shown in FIG. 6.
[0044] Fig. 12 is a partial view of the wearable device shown in Fig. 4, with a third segment of the flexible circuit board omitted, on the side of the battery.
[0045] Explanation of main component symbols
[0046] Wearable device: 100, 200; housing: 10, 201; first cavity: 101; cavity wall: 1011; second cavity: 103; first shell: 11; second shell: 12; screen: 13; interface: 1001; first circuit board: 20; second circuit board: 30; first connecting portion: 31; second accommodating hole: 301; flexible circuit board: 40, 207; second connecting portion: 401; first segment: 41; second segment: 43; third segment: 45; fourth segment: 47; first accommodating hole: 403; first support: 51; solder pad: 511; solder hole: 513, 513a; second support: 53; first component: 61; second component: 62; third component: 63; connecting member: 70; battery: 80; charging coil: 91, 211; magnet: 93; circuit board: 205; protrusion: 203; main board: 209; middle shell: 210; arrangement direction: Z.
[0047] The following detailed description will further describe the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION
[0048] In order to further illustrate the technical means and effects adopted by the present application to achieve the intended purpose of the application, the following will be described in conjunction with the drawings and embodiments. It is obvious that the described embodiments are only a part of the embodiments of the present application, not all of the embodiments.
[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application.
[0050] Some embodiments of the present application propose a wearable device. The wearable device includes a housing, a first circuit board, a second circuit board, a flexible circuit board, and a first support. The housing is provided with a first cavity and a second cavity arranged in sequence along an arrangement direction and in communication. The first circuit board is arranged in the first cavity. The second circuit board is arranged in the second cavity. The flexible circuit board is used to connect the first circuit board and the second circuit board, and the flexible circuit board is provided with a second connecting portion. The first support is connected between the second connecting portion and the second circuit board along the arrangement direction.
[0051] The first support member makes the first flexible circuit board and the second circuit board in the first cavity electrically connected, the second connection part of the flexible circuit board connected with the second circuit board in the second cavity is not located in the second cavity, and the flexible circuit board does not need to extend from the second cavity to the first cavity to form a climbing section when the flexible circuit board is connected with the first circuit board in the first cavity, thereby avoiding the climbing problem of the flexible circuit board. Or the first support member reduces the distance between the second connection part of the flexible circuit board and the cavity wall of the first cavity facing the second cavity, thereby reducing the climbing height of the flexible circuit board from the second cavity to the first cavity.
[0052] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The following examples and features in the examples can be combined with each other without conflict.
[0053] Please refer to FIG. 4 and FIG. 5, an embodiment of the present application provides a wearable device 100. In an embodiment, the wearable device 100 is a watch worn on the wrist, but is not limited thereto. For example, in other embodiments, the wearable device 100 can also be a monitor, an earphone, a bracelet, a ring, a VR glasses, and the like, which are structures worn on the fingers, wrists, arms, legs, faces, and the like of the human or animal body.
[0054] The wearable device 100 includes a housing 10, a first circuit board 20, a second circuit board 30, a flexible circuit board 40, and a first support member 51. The housing 10 is provided with a first cavity 101 and a second cavity 103 arranged in sequence and in communication. For the sake of subsequent description, the arrangement direction of the first cavity 101 and the second cavity 103 is defined as the arrangement direction Z. The arrangement direction Z can be a horizontal direction, a vertical direction, or a direction inclined relative to the horizontal direction and the vertical direction, and the arrangement direction Z is set for the arrangement of the first cavity 101 and the second cavity 103 in the housing 10, and is irrelevant to the reference datum such as the horizontal plane and the vertical plane outside the housing 10. The second circuit board 30 is arranged in the second cavity 103. The first circuit board 20 is arranged in the first cavity 101. The first circuit board 20 and the second circuit board 30 are connected by the flexible circuit board 40 to realize the conduction of electrical signals. The first circuit board 20 is a main board 209 of the wearable device 100, and the circuit of at least one element such as PPG and ECG is integrated in the second circuit board 30. The flexible circuit board 40 communicatively connects the circuit of the at least one element such as PPG and ECG with the main board 209.
[0055] In an embodiment, the housing 10 comprises a first shell 11, a second shell 12 and a screen 13. The first shell 11 and the screen 13 are connected to opposite sides of the second shell 12 respectively. The first shell 11, the second shell 12 and the screen 13 enclose a cavity. A portion of the first shell 11 is recessed away from the screen 13 to form a second cavity 103. The space of the second cavity 103 is the first cavity 101. The outer peripheral portion of the first shell 11 at the junction 1001 of the first cavity 101 and the second cavity 103 forms a cavity wall 1011 of the first cavity 101. The second cavity 103 is recessed from the cavity wall 1011 of the first cavity 101.
[0056] It can be understood that in other embodiments, the first shell 11 and the second shell 12 can also be integrated. Alternatively, in another embodiment, for example, when the wearable device is a screenless earphone, the screen 13 can be omitted, and the first shell 11 and the second shell 12 form the space including the first cavity 101 and the second cavity 103. The specific structure of the housing 10 is not limited as long as the first cavity 101 and the second cavity 103 are sequentially arranged and communicated in the housing 10.
[0057] Please continue to refer to FIG. 6. The second circuit board 30 is provided with a first connecting portion 31. The flexible circuit board 40 is provided with a second connecting portion 401. The first support 51 is connected between the first connecting portion 31 and the second connecting portion 401, so as to electrically conduct the flexible circuit board 40 and the second circuit board 30, and to have a spacing between the flexible circuit board 40 and the second circuit board 30 along the arrangement direction Z.
[0058] In an embodiment, the arrangement direction of the first connecting portion 31 and the second connecting portion 401 is parallel to the arrangement direction Z. The first support 51 extends along the arrangement direction Z and is perpendicular to the second circuit board 30 and the flexible circuit board 40, so as to reduce the occupied area of the first support 51 in the plane perpendicular to the arrangement direction Z, and to increase the space for arranging elements between the second circuit board 30 and the flexible circuit board 40.
[0059] It can be understood that in other embodiments, the first support 51 can also extend along a direction inclined with respect to the arrangement direction Z. The first connecting portion 31 and the second connecting portion 401 can also be arranged in a direction inclined with respect to the arrangement direction Z, for example, the first connecting portion 31 is arranged at a distance from the second connecting portion 401 along the arrangement direction Z in the orthographic projection of the second circuit board.
[0060] In an embodiment, the flexible circuit board 40 is connected to the first support 51, passes through the junction 1001 of the first cavity 101 and the second cavity 103, and continues to extend along the cavity wall 1011 of the first cavity 101, but is not limited thereto.
[0061] It can be understood that in other embodiments, the flexible circuit board 40 can also not pass through the junction 1001 of the first cavity 101 and the second cavity 103, for example, the flexible circuit board 40 is connected to the first support 51 and extends to the side of the second cavity 103 along the arrangement direction Z.
[0062] The first support 51 has a spacing between the first flexible circuit board 40 and the second circuit board 30 along the arrangement direction Z, so that the flexible circuit board 40 is supported by the first support 51 in the direction from the second cavity 103 to the first cavity 101. The flexible circuit board 40 can be located in the first cavity 101 outside the second cavity 103; or the second connection part 401 of the flexible circuit board 40 is located in the second cavity 103 and partially extends into the first cavity 101 to be connected to the first circuit board 20.
[0063] When the flexible circuit board 40 is located entirely in the first cavity 101, the second connection part 401 of the flexible circuit board 40 is located outside the second cavity 103. When the flexible circuit board 40 is connected to the second circuit board 30 in the second cavity 103 and continues to extend along the cavity wall 1011 of the first cavity 101, it does not need to extend from the second cavity 103 to the first cavity 101 and needs to climb over the junction 1001, avoiding the climbing problem of the flexible circuit board 40. The flexible circuit board 40 does not need to climb, and under the support of the first support 51, the welding stability of the second connection part 401 and the first support 51 is improved, and the risk of tearing of the second connection part 401 and the first support 51 in the assembly process is reduced.
[0064] When the second connection part 401 is connected to the first support 51 in the second cavity 103, the first support 51 raises the position of the flexible circuit board 40 in the second cavity 103 along the arrangement direction Z, so as to reduce the distance between the cavity wall 1011 of the first cavity 101 and the second connection part 401, and further reduce the climbing height of the flexible circuit board 40 from the second cavity 103 to the first cavity 101, avoiding the existence of a large size difference of the flexible circuit board 40 along the arrangement direction Z, for example, a size difference greater than 0.6mm.
[0065] In an embodiment, the first support 51 is a circuit board structure. The first support 51 is provided with a plurality of welding holes 513 on opposite sides along the arrangement direction Z. The welding hole 513 is a through hole structure, and the welding hole 513 is filled with solder. The first support 51 is provided with a bonding pad 511 on the side of the through hole. The bonding pad 511 is connected to the second connection part 401 by laser welding or hot bar welding, etc., which improves the welding strength of the flexible circuit board 40. The bonding pad 511 is welded to the first connection part 31 of the second circuit board 30 by reflow soldering, etc.
[0066] In another embodiment, as shown in FIG. 7, the first support 51 in the wearable device 100a is designed in a high density interconnector (HDI) manner, and the soldering hole 513a is a buried hole formed between two blind holes. The soldering manner of the first support 51 with the flexible circuit board 40 and the second circuit board 30 is set according to the requirement.
[0067] It can be understood that in other embodiments, the first support 51 can also be a plastic structure (not shown) with an embedded metal structure (not shown), wherein the metal structure serves as the soldering pad of the first support. The metal structure and the plastic structure can also be integrally formed.
[0068] In an embodiment, the wearable device 100 further includes a plurality of first elements 61. The plurality of first elements 61 are respectively connected to the flexible circuit board 40 and located on the side of the flexible circuit board 40 facing the second circuit board 30. The first support 51 is supported between the flexible circuit board 40 and the second circuit board 30, so that the space between the flexible circuit board 40 and the second circuit board 30 is increased, and the first support 51 is at least partially located in the second cavity 103. The plurality of first elements 61 can utilize the space, so as to reduce or avoid the plurality of first elements 61 on the flexible circuit board 40 occupying the space of the first cavity 101, thereby avoiding increasing the size of the wearable device 100 along the arrangement direction Z.
[0069] In an embodiment, the wearable device 100 further includes a plurality of second elements 62. The plurality of second elements 62 are arranged on the second circuit board 30 and located on the side of the circuit board 205 facing the flexible circuit board 40. The plurality of first elements 61 and the plurality of second elements 62 are arranged opposite and staggered between the flexible circuit board 40 and the second circuit board 30. That is, the plurality of first elements 61 and the plurality of second elements 62 extend opposite along the arrangement direction Z, and the projections of the plurality of first elements 61 and the plurality of second elements 62 on the second circuit board 30 along the arrangement direction Z do not coincide, respectively.
[0070] The plurality of first elements 61 and the plurality of second elements 62 are arranged opposite between the flexible circuit board 40 and the second circuit board 30 in the space supported by the first support 51, so as to reduce the space occupied by the plurality of first elements 61 along the arrangement direction Z in the first cavity 101, thereby effectively reducing the size of the wearable device 100 along the arrangement direction Z.
[0071] In an embodiment, the distance between the flexible circuit board 40 and the second circuit board 30 along the arrangement direction Z is less than the sum of the maximum size of the plurality of first elements 61 along the arrangement direction Z and the minimum size of the plurality of second elements 62 along the arrangement direction Z. That is, the first element 61 with the maximum size along the arrangement direction Z does not overlap with any second element 62 along the arrangement direction Z, so as to make the distance between the flexible circuit board 40 and the second circuit board 30 as small as possible.
[0072] In an embodiment, the spacing between the flexible circuit board 40 and the second circuit board 30 along the arrangement direction Z is less than the sum of the maximum dimension of the plurality of second elements 62 along the arrangement direction Z and the minimum dimension of the plurality of first elements 61 along the arrangement direction Z, i.e., the maximum dimension of the second element 62 along the arrangement direction Z does not overlap with any first element 61 along the arrangement direction Z, so as to make the spacing between the flexible circuit board 40 and the second circuit board 30 as small as possible.
[0073] It can be understood that in other embodiments, the spacing between the flexible circuit board 40 and the second circuit board 30 along the arrangement direction Z can also be greater than or equal to the sum of the maximum dimension of the plurality of first elements 61 along the arrangement direction Z and the minimum dimension of the plurality of second elements 62 along the arrangement direction Z, or greater than the sum of the maximum dimension of the plurality of first elements 61 along the arrangement direction Z and the minimum dimension of the plurality of second elements 62 along the arrangement direction Z. For example, in another embodiment, when the sum of the maximum dimension of the plurality of first elements 61 along the arrangement direction Z and the minimum dimension of the plurality of second elements 62 along the arrangement direction Z is less than the sum of the maximum dimension of the plurality of first elements 61 along the arrangement direction Z and the minimum dimension of the plurality of second elements 62 along the arrangement direction Z, the spacing between the flexible circuit board 40 and the second circuit board 30 along the arrangement direction Z is greater than the sum of the maximum dimension of the plurality of first elements 61 along the arrangement direction Z and the minimum dimension of the plurality of second elements 62 along the arrangement direction Z, and less than the sum of the maximum dimension of the plurality of first elements 61 along the arrangement direction Z and the minimum dimension of the plurality of second elements 62 along the arrangement direction Z.
[0074] The projections of the plurality of first elements 61 and the plurality of second elements 62 on the second circuit board 30 do not overlap, avoiding the dimensions of the first elements 61 and the second elements 62 along the arrangement direction Z from being overlapped, and further effectively reducing the dimension of the wearable device 100 along the arrangement direction Z.
[0075] The first elements 61 and the second elements 62 can each be one of a chip, a Radio Link Control (RLC) circuit module, a Photoplethysmography (PPG) circuit module, an Active Front End (AFE) circuit module, an electrocardiogram (ECG) measurement circuit module, a charging load switch module, a charging protection circuit, and the like.
[0076] The dimension of the first support 51 along the arrangement direction Z can be set according to the maximum dimension of the plurality of first elements 61 and the plurality of second elements 62 along the arrangement direction Z after being connected between the flexible circuit board 40 and the second circuit board 30.
[0077] If the module is not necessarily soldered to the second circuit board 30, the module can be soldered to the flexible circuit board 40 as the first element 61 to reduce the number of soldering points of the second circuit board 30 and improve the space utilization between the second circuit board 30 and the flexible circuit board 40. For example, in another embodiment, as shown in FIG. 8, in the wearable device 100b, the sum of the sizes of one of the plurality of first elements 61 and one of the plurality of second elements 62 along the arrangement direction Z is n, and the maximum size of the plurality of first elements 61 and the plurality of second elements 62 along the arrangement direction Z is m. Since n is less than m, and m is less than the distance between the flexible circuit board 40 and the second circuit board 30 along the arrangement direction Z, the projections of the first element 61 and the second element 62 on the second circuit board 30 intersect, that is, the first element 61 and the second element 62 are arranged opposite to each other along the arrangement direction Z, and the two elements are arranged in the arrangement direction Z to reduce the occupied area in the plane perpendicular to the thickness direction, so as to fully utilize the space of the second circuit board 30 and the flexible circuit board 40 along the arrangement direction Z, thereby facilitating the reduction of the area of the second circuit board 30 and the second cavity 103 perpendicular to the arrangement direction Z.
[0078] Please continue to refer to FIGS. 4 and 6. In an embodiment, the wearable device 100 further includes a battery 80. The battery 80 is arranged in the first cavity 101. The battery 80 is arranged between the first circuit board 20 and the second circuit board 30 along the arrangement direction Z, but is not limited thereto. The battery 80, the flexible circuit board 40, and the second circuit board 30 are arranged along the arrangement direction Z. When the first element 61 is located between the flexible circuit board 40 and the second circuit board 30, the battery 80 is located on the side of the flexible circuit board 40 away from the plurality of first elements 61, that is, the side of the flexible circuit board 40 away from the plurality of first elements 61 faces the battery 80. The plurality of first elements 61 and the battery 80 are separated by the flexible circuit board 40, so as to avoid damage caused by collision between the first element 61 and the battery 80 when the first element 61 and the flexible circuit board 40 are separated by an external force, thereby protecting the battery 80 and the first element 61, and improving the safety of the battery 80.
[0079] It can be understood that in other embodiments, the battery 80 can also be located between the first circuit board 20 and the screen 13.
[0080] In an embodiment, please refer to FIG. 11. The second circuit board 30 is a circular plate structure, and the second cavity 103 is a cylindrical cavity structure that is adapted to the second circuit board 30, but is not limited thereto. For example, in other embodiments, the second circuit board 30 can also be a plate structure of other shapes such as a rectangle or an ellipse. The second cavity 103 can also be a cavity structure of other shapes capable of accommodating the second circuit board 30.
[0081] In an embodiment, the flexible circuit board 40 comprises a first section 41, a second section 43 and a third section 45 connected in sequence. The second section 43 is electrically connected to the first circuit board 20 through the third section 45. The second connecting portion 401 is arranged on the first section 41. The first section 41 and the third section 45 are respectively located on opposite sides of the battery 80 along the arrangement direction Z. The third section 45 is connected to the first circuit board 20. The flexible circuit board 40 is connected to the first circuit board 20 by bypassing the battery 80, which facilitates the layout of the first circuit board 20 and the battery 80 along the arrangement direction Z, so as to improve the rationalization of the layout in the first cavity 101 of the wearable device 100. The first section 41 is in a flattened state, which avoids the problem of wall climbing caused by the bending extension of the first section 41 between the first cavity 101 and the second cavity 103. The first section 41 of the flexible circuit board 40 is in a flattened state, which facilitates the reduction of the space occupied by the first section 41 of the flexible circuit board 40 on the side of the battery 80 away from the first circuit board 20 along the arrangement direction Z.
[0082] In an embodiment, the second section 43 is perpendicular to the first section 41 and the third section 45, but is not limited thereto.
[0083] It can be understood that in other embodiments, the third section 45 can also be omitted, and the second section 43 is connected to the first circuit board 20 after being bent relative to the first section 41.
[0084] As shown in the prior art in FIG. 3, because the flexible circuit board 40 climbs a distance on the edge of the circuit board 205 in the arrangement direction Z, and the circuit board 205 is a circular plate structure, the starting section of the flexible circuit board 40 that starts to climb is a straight line, which is parallel to the chord of the reference circle of the circular contour of the circuit board 205, which results in that the position between the minor arc and the chord of the circuit board 205 cannot be arranged with a soldering site, thereby reducing the layout density of the circuit board 205.
[0085] In an embodiment, referring to FIGS. 4, 6 and 9, compared with the prior art wearable device 100, when the flexible circuit board 40 has no climbing section near the second connecting portion 401, the projections of the plurality of pads 511 of the first support 51 on the second circuit board 30 along the arrangement direction Z can be arranged near the edge of the second circuit board 30, thereby improving the density of the soldering sites arranged on the second circuit board 30 and facilitating the reduction of the size of the second circuit board 30.
[0086] It can be understood that in other embodiments, the projections of the first support 51 and the second connecting portion 401 on the second circuit board 30 along the arrangement direction Z can also be located near the center of the second circuit board 30 or other positions.
[0087] In an embodiment, the first support 51 is located near the edge of the second circuit board 30 near the second section 43 of the flexible circuit board 40, but is not limited thereto.
[0088] To improve the spatial stability between the flexible circuit board 40 and the second circuit board 30, the wearable device 100 further comprises a second support 53. The second support 53 is connected to the second circuit board 30 and is supported between the flexible circuit board 40 and the second circuit board 30. The second support 53 is spaced apart from the first support 51 and is located near the edge of the second circuit board 30, respectively.
[0089] It can be understood that in other embodiments, the first support 51 and the second support 53 can also be located at other positions, for example, the first support 51 and / or the second support 53 are located near the center of the second circuit board 30.
[0090] In an embodiment, the number of the first support 51 and the second support 53 is one, but is not limited thereto.
[0091] It can be understood that in other embodiments, one end of the second support 53 can also be connected to the flexible circuit board 40 and the other end is connected to the second circuit board 30. Alternatively, both ends of the second support 53 are connected to the flexible circuit board 40 and the second circuit board 30, respectively.
[0092] In an embodiment, the second support 53 is a metal member, but is not limited thereto. For example, in other embodiments, the second support 53 is a plastic member.
[0093] The first support 51 and the second support 53 are spaced apart and supported between the second circuit board 30 and the flexible circuit board 40, thereby providing support force to the flexible circuit board 40 and the second circuit board 30 under external force, and improving the spatial stability between the flexible circuit board 40 and the second circuit board 30, and improving the reliability of the plurality of first elements 61 and the plurality of second elements 62 arranged in the space.
[0094] Referring to FIGS. 4 and 6, in an embodiment, the wearable device 100 further comprises a charging coil 91. The charging coil 91 is located in the second cavity 103 and surrounds the outer periphery of the plurality of first elements 61 and the plurality of second elements 62. The charging coil 91 is connected to the second circuit board 30. The charging coil 91 is located in the second cavity 103, thereby reducing the size of the second circuit board 30 to leave space for accommodating the charging coil 91 in the second cavity 103. The charging coil 91 does not occupy the size of the first cavity 101, that is, the charging coil 91 does not increase the size of the first cavity 101 along the arrangement direction Z, thereby reducing the visual thickness of the wearable device 100.
[0095] In an embodiment, the charging coil 91 is adhered to the housing 10, i.e. to the bottom wall of the second cavity 103, so as to improve the position stability of the charging coil 91. In an embodiment, the charging coil 91 is spaced apart from the flexible circuit board 40, but is not limited thereto. For example, in another embodiment, the flexible circuit board 40 abuts against the charging coil 91, so as to further improve the position stability of the charging coil 91.
[0096] It can be understood that in other embodiments, the charging coil 91 can also be located in the first cavity 101, for example as shown in the prior art FIG. 1, the wearable device 100 further comprises a middle housing 210. The middle housing 210 is connected to the housing 10. The charging coil 211 is clamped between the middle housing 210 and the housing 10, and is connected to the flexible circuit board 40. The stability of the middle housing 210 and the housing 10 clamping the charging coil 211 is high.
[0097] It can be understood that in other embodiments, the outer periphery of the charging coil 91 can also be arranged with the first element 61 and / or the second element 62.
[0098] In an embodiment, the wearable device 100 further comprises a magnet 93. The magnet 93 is arranged on the second circuit board 30 and located in the second cavity 103. The magnet 93 is configured to attract a charging device (not shown in the figure). Specifically, the magnet 93 and the magnetic attraction structure (not shown in the figure) in the charging device are attracted to each other, so that the charging device is positioned relative to the wearable device 100. The magnet 93 can position the wearable device 100 on a charging device, so that the cooperation of the charging coil 91 of the wearable device 100 and the coil of the charging device can improve the charging efficiency.
[0099] In an embodiment, the magnet 93 is located at the center of the second circuit board 30, but is not limited thereto. The position of the magnet 93 is set according to the relative position of the magnetic attraction structure and the coil in the charging device, and the position of the charging coil 91.
[0100] In an embodiment, the magnet 93 is fixedly connected to the second circuit board 30. The second circuit board 30 has a higher hardness than the flexible circuit board 40 and is not easy to deform, so as to improve the position stability of the magnet 93 in the housing 10, and further improve the positioning accuracy of the charging device and the wearable device 100.
[0101] It can be understood that in other embodiments, the magnet 93 can also be omitted.
[0102] Referring to FIG. 6, in an embodiment, the wearable device 100 further includes a plurality of connectors 70. The number of the connectors 70 is two, but is not limited thereto. One of the two connectors 70 is connected to the flexible circuit board 40 and the magnet 93 along the arrangement direction Z, respectively, and the other of the two connectors 70 is connected to the flexible circuit board 40 and the second element 62 along the arrangement direction Z, thereby improving the connection reliability of the flexible circuit board 40 and the second connector 70, and reducing the movement amount of the flexible circuit board 40.
[0103] In an embodiment, the connector 70 is an adhesive, but is not limited thereto.
[0104] Among the plurality of second elements 62 disposed on the second circuit board 30, one or more of the second elements 62 having a larger side facing the flexible circuit board 40 perpendicular to the plane of the arrangement direction Z can be selected to be bonded to the connector 70, thereby improving the connection reliability.
[0105] It can be understood that in other embodiments, the connector 70 can also be bonded between the first element 61 and the second element 62, or the connector 70 is bonded between the first element 61 and the second circuit board 30, and the indirect connection of the flexible circuit board 40 and the second circuit board 30 can also be achieved. For example, as shown in FIG. 8, one of the two connectors 70 is connected between the flexible circuit board 40 and the second element 62, and the other of the two connectors 70 is connected between the first element 61 and the second element 62.
[0106] In an embodiment, the projection of the connector 70 along the arrangement direction Z on the flexible circuit board 40 corresponds to the first section 41. The size of the connector 70 and / or the magnet 93 along the arrangement direction Z can be adjusted to make the first section 41 of the flexible circuit board 40 in a stable flat state, thereby increasing the wiring area of the flexible circuit board 40.
[0107] Referring to FIG. 9, in another embodiment, the flexible circuit board 40 is provided with a first accommodating hole 403, and the first accommodating hole 403 penetrates the flexible circuit board 40 along the arrangement direction Z. Part of the second element 62 is accommodated in the first accommodating hole 403.
[0108] In an embodiment, the end of the second element 62 away from the second circuit board 30 is located in the first accommodating hole 403, and does not protrude from the side of the flexible circuit board 40 away from the second circuit board 30.
[0109] The first accommodating hole 403 accommodates part of the second element 62, so that the distance between the second circuit board 30 and the flexible circuit board 40 is less than the size of the second element 62 along the arrangement direction Z, thereby facilitating the reduction of the overall size of the wearable device 100 along the arrangement direction Z.
[0110] It is to be understood that in other embodiments, the first accommodating hole 403 can also be a blind hole structure, so that the flexible circuit board 40 isolates the second element 62 from the structure (for example, the battery 80) located on the side of the flexible circuit board 40 away from the second circuit board 30.
[0111] It is to be understood that in other embodiments, one end of the second element 62 can also protrude from the side of the flexible circuit board 40 away from the second circuit board 30 after passing through the first accommodating hole 403.
[0112] Referring to FIG. 10, in yet another embodiment, the second circuit board 30 is provided with a second accommodating hole 301. The second accommodating hole 301 penetrates the second circuit board 30 along the arrangement direction Z, but is not limited thereto.
[0113] In an embodiment, the end of the first element 61 away from the flexible circuit board 40 is located in the second accommodating hole 301, without protruding from the side of the second circuit board 30 away from the flexible circuit board 40.
[0114] The second accommodating hole 301 accommodates part of the first element 61, so that the distance between the second circuit board 30 and the flexible circuit board 40 is less than the size of the first element 61 along the arrangement direction Z, thereby facilitating the reduction of the overall size of the wearable device 100 along the arrangement direction Z.
[0115] It is to be understood that in other embodiments, the second accommodating hole 301 can also be a blind hole structure.
[0116] It is to be understood that in other embodiments, one end of the first element 61 can also protrude from the side of the second circuit board 30 away from the flexible circuit board 40 after passing through the second accommodating hole 301.
[0117] Referring to FIG. 5, in an embodiment, the flexible circuit board 40 further includes a plurality of fourth segments 47. The plurality of fourth segments 47 are respectively connected to the first segment 41 and respectively extend to the peripheral side of the second cavity 103. The wearable device 100 further includes a plurality of third elements 63. The plurality of third elements 63 are respectively arranged in the first cavity 101 and located on the peripheral side of the second cavity 103. Each fourth segment 47 is connected to one or more third elements 63. The plurality of third elements 63 can be a motor, a grounding module, a MIC module, a barometer, etc.
[0118] In another embodiment, as shown in FIG. 12, in the wearable device 100c, the first segment 41 and the fourth segment 47 are in a non-flattened state, and the first support 51 raises the position of the flexible circuit board 40 relative to the second cavity 103 along the arrangement direction Z, which can also reduce the wall-climbing height of the fourth segment 47 of the flexible circuit board 40 connected to the third element 63, and reduce the wall-climbing height of the first segment 41, thereby reducing the movement range of the fourth segment 47 and the first segment 41 to reduce the risk of wrinkles caused by the forced movement of the fourth segment 47 and the first segment 41.
[0119] In the wearable device 100, when the flexible circuit board 40 is connected with the first circuit board 20 in the first cavity 101, there is no need to extend from the second cavity 103 to the first cavity 101 to form a climbing section, thereby avoiding the climbing wall problem of the flexible circuit board 40; or the first support 51 raises the second connection part 401 of the flexible circuit board 40 along the arrangement direction Z at the position of the second cavity 103, so as to reduce the distance between the cavity wall of the first cavity 101 towards the second cavity 103 and the second connection part 401, and further reduce the climbing wall height of the flexible circuit board 40 extending from the second cavity 103 to the first cavity 101, thereby avoiding the existence of a large size difference of the flexible circuit board 40 along the arrangement direction Z.
[0120] In addition, those skilled in the art should understand that the above embodiments are only used to illustrate the present application, and are not used as a limitation to the present application, and as long as the above embodiments are within the spirit and scope of the present application, any appropriate changes and modifications made to the above embodiments are within the disclosure range of the present application.
Claims
1. A wearable device, comprising: The shell has a first cavity and a second cavity arranged in sequence and connected to each other; A first circuit board is disposed within the first cavity; The second circuit board is disposed in the second cavity and is provided with a first connecting part; A flexible circuit board, connected to and electrically conductive with the first circuit board, the flexible circuit board having a second connecting portion; characterized in that the wearable device further includes: A first support member is connected between the first connecting portion and the second connecting portion, enabling electrical conduction between the second circuit board and the flexible circuit board, and having a spacing along the arrangement direction of the second cavity and the first cavity.
2. The wearable device as described in claim 1, characterized in that: The wearable device also includes: Multiple first elements are respectively connected to one side of the flexible circuit board facing the second circuit board; and Multiple second components are respectively connected to the side of the second circuit board facing the flexible circuit board.
3. The wearable device as described in claim 2, characterized in that: The spacing between the flexible circuit board and the second circuit board along the arrangement direction is less than the sum of the maximum size of the plurality of first elements along the arrangement direction and the minimum size of the plurality of second elements along the arrangement direction; and / or The spacing between the flexible circuit board and the second circuit board along the arrangement direction is less than the sum of the minimum size of the plurality of first elements along the arrangement direction and the maximum size of the plurality of second elements along the arrangement direction; and / or When the sum of the dimensions of the first element and the second element along the arrangement direction is less than the distance between the flexible circuit board and the second circuit board, the projections of the first element and the second element onto the second circuit board along the arrangement direction intersect.
4. The wearable device as described in claim 2, characterized in that: The wearable device also includes connectors; The projections of the first element and the second element on the second circuit board intersect along the arrangement direction, and the connector is bonded between the first element and the second element; and / or The connector is bonded between the first component and the second circuit board; and / or The connector is bonded between the second element and the flexible circuit board.
5. The wearable device according to any one of claims 2 to 4, characterized in that: The wearable device also includes a battery disposed in the first cavity; the battery, the flexible circuit board, and the second circuit board are arranged along the arrangement direction.
6. The wearable device according to any one of claims 2 to 4, characterized in that: The flexible circuit board has a first receiving hole, and a portion of the second element is received within the first receiving hole; and / or The second circuit board is provided with a second receiving hole, and a portion of the first element is received in the second receiving hole.
7. The wearable device according to any one of claims 1 to 4, characterized in that: The flexible circuit board includes a first segment and a second segment connected in sequence; The second segment extends to one side of the first segment so that the second segment is connected to the first circuit board; the second connecting portion is disposed in the first segment; the first segment is flattened.
8. The wearable device according to any one of claims 1 to 4, characterized in that: The flexible circuit board includes a first segment and a second segment connected in sequence; the second segment extends to one side of the first segment so that the second segment is connected to the first circuit board; the second connecting portion is disposed in the first segment; The flexible circuit board further includes a plurality of fourth segments, which are connected to the first segment and extend to the periphery of the second cavity respectively; the wearable device further includes a plurality of third elements, which are respectively disposed in the first cavity and located on the outer periphery of the second cavity, and each of the fourth segments is connected to at least one of the third elements.
9. The wearable device according to any one of claims 1 to 4, characterized in that: The first support extends along the arrangement direction and is perpendicular to the first connecting portion and the second connecting portion.
10. The wearable device according to any one of claims 1 to 4, characterized in that: The wearable device also includes a charging coil; the charging coil is located in the second cavity and connected to the second circuit board or the flexible circuit board.
11. The wearable device as claimed in claim 10, characterized in that: The wearable device also includes a magnet disposed on the second circuit board and located within the second cavity, the magnet being configured to attract a charging device.
12. The wearable device according to any one of claims 1 to 4, characterized in that: The wearable device further includes a second support member, which is connected to the flexible circuit board or the second circuit board and supported between the flexible circuit board and the second circuit board; The second support member is spaced apart from the first support member.
13. The wearable device according to any one of claims 1 to 4, characterized in that: The first support member has multiple pads on both sides. The projection of the multiple pads along the arrangement direction onto the second circuit board is close to the edge of the second circuit board. The multiple pads are respectively soldered to the second connecting part and the second circuit board.