Wearable device

Abstract

A wearable device (100), comprising 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). The first circuit board (20) is arranged in the first cavity (101). The second circuit board (30) is arranged in the second cavity (103), and is provided with a first connecting part (31). The flexible circuit board (40) is provided with a second connecting part (401). The first support member (51) is connected between the first connecting part (31) and the second connecting part (401), such that the second circuit board (30) and the flexible circuit board (40) establish electrical conduction therebetween and have a spacing in the arrangement direction of the second cavity (103) and the first cavity (101). The flexible circuit board (40) is supported by the first support member (51) in a direction in which the second cavity (103) faces the first cavity (101), such that the flexible circuit board (40) is located in the first cavity (101), or the position of the flexible circuit board (40) in the second cavity (103) is elevated, thus avoiding the wall-climbing problem of the flexible circuit board (40), or reducing the wall-climbing height of the flexible circuit board (40) extending from the second cavity (103) to the first cavity (101).

Description

Wearable devices

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is filed with the China Patent Office on December 29, 2023, with application number 202311841643.4 and application name “Wearable Device”, all contents of which are incorporated by reference in this application. Technical Field

[0003] The embodiments of the present application relate to the field of terminal technology, and in particular to a wearable device. Background Art

[0004] The wearable device 200 is a watch, for example, as shown in FIG1 and FIG2. In order to achieve miniaturization, a protrusion 203 is provided on the housing 201 of the wearable device 200 to accommodate a charging adsorption magnet, a photoplethysmography (PPG) module, an electrocardiogram (ECG) module and other structures. The circuits of these structures are integrated and connected on a circuit board 205. The circuit board 205 is connected to a flexible circuit board 207 in the protrusion 203, and then connected to the flexible circuit board 207 through the flexible circuit board 207. The circuit board 207 extends outside the protrusion 203 and is connected to the mainboard 209 of the device to realize 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. However, when the flexible circuit board 207 extends from the protrusion 203 to the outside of the peripheral side 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 the risk of unreliable welding.

[0005] Summary of the Invention

[0006] In view of this, the present application provides a wearable device that reduces the wall climbing height of a flexible circuit board.

[0007] The present application provides 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 member. The housing is provided with a first cavity and a second cavity arranged in sequence and connected. The first circuit board is disposed in the first cavity. The second circuit board is disposed in the second cavity and is provided with a first connecting portion. The flexible circuit board is connected to the first circuit board and is electrically conductive, and the flexible circuit board is provided with a second connecting portion. The first support member 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 a spacing is provided along the arrangement direction of the second cavity and the first cavity.

[0008] In the above-mentioned wearable device, the first support member creates a gap between the flexible circuit board and the second circuit board along the arrangement direction of the first cavity and the second cavity. The flexible circuit board is propped up by the first support member along the direction from the second cavity toward 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 cross the junction of the first cavity and the second cavity to form a climbing section, thereby avoiding the problem of the flexible circuit board climbing the wall. When the second connecting portion of the flexible circuit board is located in the second cavity, the gap between the flexible circuit board and the junction of the first cavity and the second cavity becomes smaller, thereby reducing the wall climbing height of the flexible circuit board extending from the second cavity to the first cavity.

[0009] In a possible implementation, the wearable device further includes a plurality of first components, each of which is connected to a side of the flexible printed circuit board facing the second printed circuit board.

[0010] In the above embodiment, the multiple first components are respectively connected to the flexible circuit board and are located on the side of the flexible circuit board facing the second circuit board. The multiple first components can utilize the space in the second cavity, reducing or preventing the multiple first components on the flexible circuit board from occupying the space in 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 embodiment, multiple first elements and multiple 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, reducing the space occupied by the first cavity along the arrangement direction and effectively reducing the size of the wearable device along the arrangement direction.

[0013] In one possible embodiment, the spacing between the flexible circuit board and the second circuit board along the arrangement direction is smaller than the sum of the maximum size of the multiple first elements along the arrangement direction and the minimum size of the multiple 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 smaller than the sum of the minimum size of the multiple first elements along the arrangement direction and the maximum size of the multiple second elements along the arrangement direction; and / or when the sizes of the first element and the second element along the arrangement direction are smaller than the spacing between the flexible circuit board and the second circuit board, the projections of the first element and the second element along the arrangement direction on the second circuit board intersect.

[0014] In the above-described embodiment, the spacing between the flexible circuit board and the second circuit board is less than the sum of the maximum dimension of the plurality of first components along the arrangement direction and the minimum dimension of the plurality of second components along the arrangement direction, or less than the sum of the minimum dimension of the plurality of first components along the arrangement direction and the maximum dimension of the plurality of second components along the arrangement direction. This prevents the first component or the second component with the maximum dimension in the arrangement direction from being stacked in the arrangement direction, thereby minimizing the spacing between the flexible circuit board and the second circuit board, thereby facilitating a reduction in the size of the wearable device along the arrangement direction. When the dimensions of the first and second components along the arrangement direction are less than the spacing between the flexible circuit board and the second circuit board, a stacked arrangement is adopted, thereby reducing the occupied area in a plane perpendicular to the thickness space, thereby fully utilizing the space along the arrangement direction between the second circuit board and the flexible circuit board.

[0015] In one possible embodiment, the wearable device further includes a connector. The connector is bonded between the first component and the second component. The connector is bonded between the first component and the second circuit board. The connector is bonded between the second component and the flexible circuit board.

[0016] In the above embodiment, the flexible circuit board and the second connecting member are connected via the connecting member, which improves the connection reliability and reduces the movement of the flexible circuit board.

[0017] In one possible embodiment, the flexible circuit board includes a first section and a second section connected in sequence. The second section extends toward one side of the first section so as to connect the second section to the first circuit board. The second connecting portion is provided on the first section. The first section is flattened.

[0018] In the above embodiment, the first section is flattened, which avoids the wall climbing problem caused by the first section bending and extending between the first cavity and the second cavity. The first section of the flexible circuit board is flattened, which helps to reduce the space occupied by the first section of the flexible circuit board on the side of the battery away from the first circuit board along the arrangement direction.

[0019] In a possible implementation, the wearable device further includes a battery, which is disposed in the first cavity and between the first circuit board and the second circuit board. A side of the flexible circuit board facing away from the plurality of first elements faces the battery.

[0020] In the above embodiment, the multiple first components are separated from the battery by the flexible circuit board, so as to prevent the first components from colliding with the battery and being damaged when the first components are separated from the flexible circuit board by external force, thereby protecting both the battery and the first components and improving the safety of the battery.

[0021] In one possible embodiment, the flexible circuit board further includes a plurality of fourth sections connected to the first section and extending toward the periphery of the second cavity. The wearable device further includes a plurality of third elements, each of which is disposed within the first cavity and located outside the second cavity, with each fourth section connected to a third element.

[0022] In the above embodiment, the first support member raises 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 section of the flexible circuit board connected to the third element and reduce the range of movement of the fourth section, so as to reduce the risk of wrinkling caused by the force movement of the fourth section.

[0023] In a possible implementation, the first support member extends along the arrangement direction and is perpendicular to the first connecting portion and the second connecting portion.

[0024] In the above embodiment, the first support member extends along the arrangement direction and is perpendicular to the first connecting portion and the second connecting portion, so as to reduce the occupied area of ​​the first support member in a plane perpendicular to the arrangement direction, thereby increasing the space for arranging components between the second circuit board and the flexible circuit board.

[0025] In one possible implementation, the wearable device further includes a charging coil. The charging coil is located in the second cavity, surrounds the outer periphery of the plurality of first elements, and is connected to the second circuit board.

[0026] In the above embodiment, the charging coil is located in the second cavity. By reducing the size of the second circuit board, space is left in the second cavity to accommodate the charging coil. 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, reducing the visual heaviness of the wearable device.

[0027] In a possible implementation, the wearable device further includes a magnet, which is disposed on the second circuit board and located in the second cavity, and is configured to attract a charging device.

[0028] In the above embodiment, the magnet can position the wearable device on a charging device, so that the charging coil of the wearable device and the coil of the charging device cooperate to improve the charging efficiency.

[0029] In one possible embodiment, the wearable device further includes a second support member 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 and is respectively close to an edge of the second circuit board.

[0030] In the above embodiment, the first support member and the second support member are supported at intervals between the second circuit board and the flexible circuit board, providing support force for the flexible circuit board and the second circuit board to be subjected to external forces, thereby improving the spatial stability between the flexible circuit board and the second circuit board, and improving the reliability of the multiple first components and the multiple second components arranged in the space.

[0031] In a possible embodiment, multiple solder pads are provided on both sides of the first support member, and the projections of the multiple solder pads on the second circuit board along the arrangement direction are close to the edge of the second circuit board, and the multiple solder pads are respectively welded to the second connecting portion and the second circuit board.

[0032] In the above embodiment, when the flexible circuit board has no wall-climbing section near the second connection portion, the projections of the multiple solder pads on the second circuit board along the arrangement direction can be arranged near the edge of the second circuit board, thereby increasing the density of the soldering positions of the second circuit board layout and facilitating reducing the size of the second circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG1 is a schematic cross-sectional view of a wearable device in the prior art.

[0034] FIG2 is a partial schematic diagram of the welding of the structure located within the protrusion and the flexible circuit board in the wearable device shown in FIG1 .

[0035] FIG3 is a partial top view of the flexible printed circuit board and the printed circuit board shown in FIG2 .

[0036] FIG4 is a schematic partial cross-sectional view of a wearable device provided in an embodiment of the present application.

[0037] FIG5 is a schematic diagram of the assembly of the flexible circuit board, the second circuit board, the first support member, the second support member, the first component, and the second component in the wearable device shown in FIG4 .

[0038] FIG6 is a partial schematic diagram of welding the structure located in the second cavity of the wearable device shown in FIG4 to the flexible circuit board.

[0039] FIG7 is a partial schematic diagram of the wearable device shown in FIG6 in another embodiment.

[0040] FIG8 is a partial schematic diagram of the wearable device shown in FIG6 in another embodiment.

[0041] FIG9 is a schematic diagram of the wearable device shown in FIG6 when a first receiving hole is provided in a flexible circuit board in another embodiment.

[0042] FIG10 is a schematic diagram of the wearable device shown in FIG6 when a second receiving hole is opened on the second circuit board in another embodiment.

[0043] FIG11 is a schematic diagram of projections of the first component and the second component of the wearable device shown in FIG6 onto the second circuit board.

[0044] FIG12 is a partial schematic diagram of the wearable device shown in FIG4 located on one side of the battery in another embodiment when the third section of the flexible circuit board is omitted.

[0045] Description 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; junction: 1001; first circuit board: 20; second circuit board: 30; first connecting portion: 31; second receiving hole: 301; flexible circuit board: 40, 207; second connecting portion: 401; first section: 41; second section: 43; Third section: 45; fourth section: 47; first accommodating hole: 403; first support member: 51; soldering pad: 511; soldering holes: 513, 513a; second support member: 53; first element: 61; second element: 62; third element: 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 specific implementation methods will further illustrate 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 this application to achieve the intended application purpose, the following is combined with the drawings and implementation methods. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0050] Some embodiments of the present application provide 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 member. The housing includes a first cavity and a second cavity, which are arranged sequentially and interconnected along an arrangement direction. The first circuit board is disposed within the first cavity. The second circuit board is disposed within the second cavity. The flexible circuit board is used to connect the first and second circuit boards, and the flexible circuit board includes a second connecting portion. The first support member is connected between the second connecting portion and the second circuit board along the arrangement direction.

[0051] In the wearable device described above, the first support member electrically connects the first flexible circuit board to the second circuit board within the first cavity. The second connection portion of the flexible circuit board connecting to the second circuit board in the second cavity is not located in the second cavity. Therefore, when the flexible circuit board is connected to the first circuit board in the first cavity, there is no need to extend from the second cavity to the first cavity, thereby avoiding the problem of the flexible circuit board climbing a wall. Alternatively, the first support member reduces the distance between the second connection portion of the flexible circuit board and the cavity wall of the first cavity facing the second cavity, thereby reducing the height of the wall that the flexible circuit board climbs when extending from the second cavity to the first cavity.

[0052] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0053] Referring to Figures 4 and 5 , one embodiment of the present application provides a wearable device 100. In one 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 may be a monitor, earphones, a wristband, a ring, VR glasses, or the like, worn on the fingers, ankles, arms, legs, face, or other parts 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, which are arranged in sequence and connected. For ease of explanation, the arrangement direction of the first cavity 101 and the second cavity 103 is set as arrangement direction Z. Arrangement direction Z can be horizontal, vertical, or a direction inclined relative to the horizontal and vertical directions. Arrangement direction Z is the arrangement setting of the first cavity 101 and the second cavity 103 within the housing 10 and is independent of reference references such as the horizontal plane or the vertical plane outside the housing 10. The second circuit board 30 is disposed within the second cavity 103. The first circuit board 20 is disposed within the first cavity 101. The first circuit board 20 and the second circuit board 30 are connected via a flexible circuit board 40 to facilitate electrical signal conduction. The first circuit board 20 is the main board 209 of the wearable device 100 , and the circuit of at least one component such as PPG and ECG is integrated on the second circuit board 30 . The flexible circuit board 40 connects the circuit of at least one component such as PPG and ECG to the main board 209 for communication.

[0055] In one embodiment, the housing 10 includes a first shell 11, a second shell 12, and a screen 13. The first shell 11 and the screen 13 are respectively connected to opposite sides of the second shell 12. The first shell 11, the second shell 12, and the screen 13 enclose a cavity, wherein a portion of the first shell 11 is recessed away from the screen 13 to form a second cavity 103. The space within the cavity excluding the second cavity 103 constitutes the first cavity 101. The outer periphery of the first shell 11 at the junction 1001 between the first cavity 101 and the second cavity 103 forms the cavity wall 1011 of the first cavity 101, and the second cavity 103 is formed by a recessed portion of the cavity wall 1011 of the first cavity 101.

[0056] It is understood that in other embodiments, the first shell 11 and the second shell 12 may also be an integrated structure; or, in another embodiment, for example, when the wearable device is a headset without a screen, the screen 13 may be omitted, and the first shell 11 and the second shell 12 form a 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 formed in sequence and connected within the housing 10.

[0057] Continuing with Figure 6 , the second circuit board 30 has a first connecting portion 31. The flexible circuit board 40 has a second connecting portion 401. The first support member 51 is connected between the first connecting portion 31 and the second connecting portion 401, providing electrical continuity between the flexible circuit board 40 and the second circuit board 30 and maintaining a spacing between the flexible circuit board 40 and the second circuit board 30 along the arrangement direction Z.

[0058] In one embodiment, the arrangement direction of the first connecting portion 31 and the second connecting portion 401 is parallel to the arrangement direction Z, and the first support member 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 member 51 in a plane perpendicular to the arrangement direction Z, so as to increase the space for arranging components between the second circuit board 30 and the flexible circuit board 40.

[0059] It can be understood that in other embodiments, the first support member 51 may also extend in a direction inclined relative to the arrangement direction Z; the first connection portion 31 and the second connection portion 401 may also be arranged in a direction inclined relative to the arrangement direction Z, for example, the first connection portion 31 is spaced apart from the second connection portion 401 in the positive projection of the second circuit board along the arrangement direction Z.

[0060] In one embodiment, after being connected to the first support member 51 , the flexible circuit board 40 passes over the boundary 1001 between the first cavity 101 and the second cavity 103 and continues to extend along the cavity wall 1011 of the first cavity 101 , but the present invention is not limited thereto.

[0061] It is understandable that in other embodiments, the flexible circuit board 40 may not pass through the junction 1001 between the first cavity 101 and the second cavity 103. For example, the flexible circuit board 40 extends toward one side of the second cavity 103 along the arrangement direction Z after connecting to the first support member 51.

[0062] The first support member 51 creates a distance 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 member 51 along the direction from the second cavity 103 toward 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 connecting portion 401 of the flexible circuit board 40 is located in the second cavity 103 and partially extends into the first cavity 101 to connect with the first circuit board 20.

[0063] When the entire flexible circuit board 40 is located in the first cavity 101, the second connection portion 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, there is no need to extend from the second cavity 103 to the first cavity 101 and cross the junction 1001 to form a climbing section, thereby avoiding the problem of the flexible circuit board 40 climbing the wall; the flexible circuit board 40 does not need to climb, and with the support of the first support member 51, the welding stability of the second connection portion 401 and the first support member 51 is improved, and the risk of tearing of the second connection portion 401 and the first support member 51 during assembly is reduced.

[0064] When the second connecting portion 401 is connected to the first supporting member 51 in the second cavity 103, the first supporting member 51 raises the position of the flexible circuit board 40 in the second cavity 103 along the arrangement direction Z, thereby reducing the distance between the cavity wall 1011 of the first cavity 101 and the second connecting portion 401, thereby reducing the wall climbing height of the flexible circuit board 40 extending from the second cavity 103 to the first cavity 101, and avoiding a large dimensional difference of the flexible circuit board 40 along the arrangement direction Z, for example, a dimensional difference greater than 0.6 mm.

[0065] In one embodiment, the first support member 51 is a circuit board structure. The first support member 51 is provided with a plurality of solder holes 513 on opposite sides along the arrangement direction Z. The solder holes 513 are through-hole structures and are filled with solder. The first support member 51 is provided with solder pads 511 around the through-holes. The solder pads 511 are connected to the second connecting portion 401 by laser welding or hot bar welding, thereby improving the soldering strength of the flexible circuit board 40. The solder pads 511 are soldered to the first connecting portion 31 of the second circuit board 30 by reflow soldering or other methods.

[0066] In another embodiment, as shown in FIG7 , in wearable device 100a, first support member 51 utilizes a high-density interconnect (HDI) design, and soldering hole 513a is a buried via connecting two blind vias. The soldering method between first support member 51 and flexible printed circuit board 40 and second printed circuit board 30 is determined as needed.

[0067] It is understood that in other embodiments, the first support member 51 may also be a plastic structure (not shown) with an embedded metal structure (not shown), wherein the metal structure serves as a solder pad of the first support member. The metal structure and the plastic structure may also be integrally formed.

[0068] In one 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 are located on the side of the flexible circuit board 40 facing the second circuit board 30. The first support member 51 is supported between the flexible circuit board 40 and the second circuit board 30, thereby increasing the space between the flexible circuit board 40 and the second circuit board 30. The first support member 51 is at least partially located within the second cavity 103. The plurality of first elements 61 can utilize this space, reducing or preventing the plurality of first elements 61 on the flexible circuit board 40 from occupying space within the first cavity 101, thereby preventing an increase in the overall size of the wearable device 100 along the arrangement direction Z.

[0069] In one embodiment, the wearable device 100 further includes a plurality of second elements 62. The plurality of second elements 62 are disposed 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 in an interlaced manner between the flexible circuit board 40 and the second circuit board 30, facing each other. In other words, the plurality of first elements 61 and the plurality of second elements 62 extend toward each other along the arrangement direction Z, and their respective projections on the second circuit board 30 along the arrangement direction Z do not overlap.

[0070] Multiple first elements 61 and multiple second elements 62 are arranged facing each other in the space formed between the flexible circuit board 40 and the second circuit board 30 and supported by the first support member 51, reducing the space occupied by the first cavity 101 along the arrangement direction Z, and effectively reducing the size of the wearable device 100 along the arrangement direction Z.

[0071] In one 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 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 having the maximum size along the arrangement direction Z will not overlap with any second element 62 along the arrangement direction Z, thereby minimizing the spacing between the flexible circuit board 40 and the second circuit board 30.

[0072] In one 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 size of the plurality of second elements 62 along the arrangement direction Z and the minimum size of the plurality of first elements 61 along the arrangement direction Z. That is, the second element 62 with the maximum size along the arrangement direction Z will not overlap with any first element 61 along the arrangement direction Z, thereby minimizing the spacing between the flexible circuit board 40 and the second circuit board 30.

[0073] It is understood that in other embodiments, the spacing between the flexible circuit board 40 and the second circuit board 30 along the arrangement direction Z may be greater than or equal to 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, or greater 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. For example, in another embodiment, when 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 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, 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 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, and 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.

[0074] The projections of the multiple first elements 61 and the multiple second elements 62 on the second circuit board 30 do not overlap, which avoids the overlapping of the sizes of the first elements 61 and the second elements 62 in the arrangement direction Z, further effectively reducing the size of the wearable device 100 along the arrangement direction Z.

[0075] The first component 61 and the second component 62 can be respectively one of a chip, a radio link control (RLC) circuit module, a photoplethysmography (PPG) circuit module, an AFE (Active Front End) circuit module, an electrocardiogram measurement circuit module (ECG), a charging load switch module, a charging protection circuit, and the like.

[0076] The size of the first support member 51 along the arrangement direction Z may be set according to the maximum size of the first components 61 and the second components 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 does not need to be soldered to the second circuit board 30, the module can be soldered to the flexible circuit board 40 as the first component 61 to reduce the number of solder joints on 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 FIG8 , in the wearable device 100b , the sum of the dimensions of one of the plurality of first components 61 and one of the plurality of second components 62 along the arrangement direction Z is n, and the maximum dimension of the plurality of first components 61 and the plurality of second components 62 along the arrangement direction Z is m. Since n is less than m, and m is less than the spacing between the flexible circuit board 40 and the second circuit board 30 along the arrangement direction Z, the first element 61 and the second element 62 intersect at the projections of the second circuit board 30, respectively, that is, the first element 61 and the second element 62 are arranged facing each other along the arrangement direction Z. The two elements are superimposed in the arrangement direction Z to reduce the occupied area in the plane perpendicular to the thickness space, so as to make full use of the space between the second circuit board 30 and the flexible circuit board 40 along the arrangement direction Z, so as to facilitate reducing the area of ​​the second circuit board 30 and the second cavity 103 perpendicular to the arrangement direction Z.

[0078] Continuing with Figures 4 and 6 , in one embodiment, the wearable device 100 further includes a battery 80. The battery 80 is disposed within the first cavity 101. The battery 80 is positioned 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 positioned between the flexible circuit board 40 and the second circuit board 30, the battery 80 is positioned on the side of the flexible circuit board 40 facing away from the plurality of first elements 61. In other words, the side of the flexible circuit board 40 facing away from the plurality of first elements 61 faces the battery 80. The plurality of first elements 61 are separated from the battery 80 by the flexible circuit board 40, preventing damage to the battery 80 from collision when the first element 61 and the flexible circuit board 40 are separated by external forces. This protects both the battery 80 and the first element 61, thereby enhancing the safety of the battery 80.

[0079] It is understandable that in other embodiments, the battery 80 may also be located between the first circuit board 20 and the screen 13 .

[0080] In one embodiment, referring to FIG11 , the second circuit board 30 is a circular plate-shaped structure, and the second cavity 103 is a generally cylindrical cavity structure adapted to accommodate the second circuit board 30, but the present invention is not limited thereto. For example, in other embodiments, the second circuit board 30 may also be a plate-shaped structure of other shapes, such as a rectangle or an ellipse. The second cavity 103 may also be a cavity structure of other shapes capable of accommodating the second circuit board 30.

[0081] In one embodiment, the flexible circuit board 40 includes a first section 41, a second section 43, and a third section 45, which are connected in sequence. The second section 43 is electrically connected to the first circuit board 20 via the third section 45. A second connecting portion 401 is provided on the first section 41. The first section 41 and the third section 45 are 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 bypasses the battery 80 and connects to the first circuit board 20, facilitating the layout of the first circuit board 20 and the battery 80 along the arrangement direction Z, thereby streamlining the layout within the first cavity 101 of the wearable device 100. The flattened shape of the first section 41 prevents the first section 41 from bending and extending between the first cavity 101 and the second cavity 103, thereby minimizing the space occupied by the first section 41 of the flexible circuit board 40 along the arrangement direction Z on the side of the battery 80 facing away from the first circuit board 20.

[0082] In one embodiment, the second section 43 is perpendicular to the first section 41 and the third section 45 , but is not limited thereto.

[0083] It is understandable that in other embodiments, the third section 45 may also be omitted, and the second section 43 is bent relative to the first section 41 and then connected to the first circuit board 20 .

[0084] As shown in FIG3 , the prior art relates to a flexible circuit board 40 that climbs the wall for a certain distance in the arrangement direction Z at the edge of the circuit board 205 , and the circuit board 205 is a circular plate-like structure. The starting section of the flexible circuit board 40 that begins to climb the wall is a straight line, which is parallel to the chord of the pitch circle of the circular contour of the circuit board 205 . This results in the inability to arrange a welding position on the circuit board 205 between the inferior arc and the chord, thereby reducing the layout density of the circuit board 205 .

[0085] In one embodiment, referring to Figures 4, 6 and 9, relative to the wearable device 100 of the prior art, when the flexible circuit board 40 has no wall-climbing section near the second connection portion 401, the projections of the multiple pads 511 of the first support member 51 along the arrangement direction Z on the second circuit board 30 can be arranged at a position close to the edge of the second circuit board 30, thereby improving the density of the welding positions of the second circuit board 30 and facilitating reducing the size of the second circuit board 30.

[0086] It is understandable that in other embodiments, the projections of the first support member 51 and the second connecting portion 401 along the arrangement direction Z on the second circuit board 30 may also be located at other positions such as near the center of the second circuit board 30 .

[0087] In one embodiment, the first support member 51 is located near an edge of the second circuit board 30 close to 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 includes a second support member 53. The second support member 53 is connected to the second circuit board 30 and supported between the flexible circuit board 40 and the second circuit board 30. The second support member 53 is spaced apart from the first support member 51 and is located near the edge of the second circuit board 30.

[0089] It is understandable that in other embodiments, the first support member 51 and the second support member 53 may also be located at other positions respectively, for example, the first support member 51 and / or the second support member 53 are close to the center of the second circuit board 30 .

[0090] In one embodiment, the number of the first support member 51 and the number of the second support member 53 are both one, but the present invention is not limited thereto.

[0091] It is understood that in other embodiments, one end of the second support member 53 may be connected to the flexible circuit board 40 and the other end may be connected to the second circuit board 30. Alternatively, both ends of the second support member 53 may be connected to the flexible circuit board 40 and the second circuit board 30 respectively.

[0092] In one embodiment, the second support member 53 is a metal member, but is not limited thereto. For example, in other embodiments, the second support member 53 is a plastic member.

[0093] The first support member 51 and the second support member 53 are supported at intervals between the second circuit board 30 and the flexible circuit board 40, providing support for the flexible circuit board 40 and the second circuit board 30 under external forces, thereby improving the spatial stability between the flexible circuit board 40 and the second circuit board 30, and improving the reliability of the multiple first components 61 and the multiple second components 62 arranged in the space.

[0094] Referring to Figures 4 and 6, in one embodiment, the wearable device 100 further includes 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, and by reducing the size of the second circuit board 30, space is reserved in the second cavity 103 to accommodate the charging coil 91. 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 heaviness of the wearable device 100.

[0095] In one embodiment, the charging coil 91 is bonded to the housing 10, specifically to the bottom wall of the second cavity 103, to enhance the positional stability of the charging coil 91. In one embodiment, the charging coil 91 is spaced apart from the flexible printed circuit board 40, but this is not limiting. For example, in another embodiment, the flexible printed circuit board 40 abuts the charging coil 91 to further enhance its positional stability.

[0096] It is understood that in other embodiments, the charging coil 91 may also be located within the first cavity 101. For example, as shown in FIG. 1 of the prior art, the wearable device 100 further includes a middle shell 210. The middle shell 210 is connected to the housing 10. The charging coil 211 is clamped between the middle shell 210 and the housing 10 and is connected to the flexible circuit board 40. The middle shell 210 and the housing 10 provide a high degree of stability in clamping and securing the charging coil 211.

[0097] It is understandable that in other embodiments, the first element 61 and / or the second element 62 may also be arranged on the periphery of the charging coil 91 .

[0098] In one embodiment, the wearable device 100 further includes a magnet 93. The magnet 93 is disposed on the second circuit board 30 and is located within the second cavity 103. The magnet 93 is configured to attract a charging device (not shown). Specifically, the magnet 93 and the magnetic attraction structure (not shown) within the charging device attract each other, so that the charging device and the wearable device 100 are relatively positioned. The magnet 93 can position the wearable device 100 on a charging device, and the coordination of the charging coil 91 of the wearable device 100 and the coil of the charging device can improve charging efficiency.

[0099] In one 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 determined based on the relative position of the magnetic structure and the coil in the charging device, as well as the position of the charging coil 91 .

[0100] In one embodiment, the magnet 93 is fixedly connected to the second circuit board 30. The second circuit board 30 is harder than the flexible circuit board 40 and is not easily deformed, which is beneficial to the position stability of the magnet 93 in the housing 10, thereby improving the positioning accuracy of the charging device and the wearable device 100.

[0101] It is understandable that in other embodiments, the magnet 93 may also be omitted.

[0102] Referring to FIG. 6 , in one embodiment, the wearable device 100 further includes a plurality of connectors 70 . The number of connectors 70 is two, but not limited to this. One of the two connectors 70 is connected to the flexible circuit board 40 and the magnet 93 along the arrangement direction Z, respectively. The other of the two connectors 70 is connected to the flexible circuit board 40 and the second component 62 along the arrangement direction Z. This improves the connection reliability between the flexible circuit board 40 and the second connector 70 and reduces the amount of movement of the flexible circuit board 40.

[0103] In one embodiment, the connecting member 70 is adhesive, but is not limited thereto.

[0104] Among the plurality of second components 62 disposed on the second circuit board 30 , one or more larger adhesive connectors 70 may be selected in a plane perpendicular to the arrangement direction Z on the side facing the flexible circuit board 40 , thereby improving connection reliability.

[0105] It is understood that in other embodiments, the connector 70 may be bonded between the first component 61 and the second component 62, or between the first component 61 and the second circuit board 30, thereby achieving an indirect connection between the flexible circuit board 40 and the second circuit board 30. For example, as shown in FIG8 , one of the two connectors 70 is connected between the flexible circuit board 40 and the second component 62, and the other of the two connectors 70 is connected between the first component 61 and the second component 62.

[0106] In one embodiment, the projection of the connector 70 on the flexible circuit board 40 along the arrangement direction Z substantially corresponds to the first section 41. The dimensions of the connector 70 and / or the magnet 93 along the arrangement direction Z are adjustable, allowing the first section 41 of the flexible circuit board 40 to maintain a stable flattened state, thereby increasing the wiring area of ​​the flexible circuit board 40.

[0107] 9 , in another embodiment, the flexible circuit board 40 defines a first receiving hole 403 , which passes through the flexible circuit board 40 along the arrangement direction Z. A portion of the second component 62 is received in the first receiving hole 403 .

[0108] In one embodiment, an end of the second component 62 away from the second circuit board 30 is located in the first receiving hole 403 and does not protrude from a 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 component 62, so that the distance between the second circuit board 30 and the flexible circuit board 40 is smaller than the size of the second component 62 along the arrangement direction Z, thereby reducing the overall size of the wearable device 100 along the arrangement direction Z.

[0110] It is understood that in other embodiments, the first receiving hole 403 may also be a blind hole structure, so that the flexible circuit board 40 isolates the second component 62 from the structure (eg, battery 80 ) located on the side of the flexible circuit board 40 away from the second circuit board 30 .

[0111] It is understandable that in other embodiments, one end of the second component 62 may also pass through the first receiving hole 403 and then protrude from the side of the flexible circuit board 40 facing away from the second circuit board 30 .

[0112] 10 , in another embodiment, the second circuit board 30 is provided with a second receiving hole 301. The second receiving hole 301 passes through the second circuit board 30 along the arrangement direction Z, but is not limited thereto.

[0113] In one embodiment, an end of the first component 61 away from the flexible circuit board 40 is located in the second receiving hole 301 and does not protrude from a 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 component 61, so that the distance between the second circuit board 30 and the flexible circuit board 40 is smaller than the size of the first component 61 along the arrangement direction Z, thereby reducing the overall size of the wearable device 100 along the arrangement direction Z.

[0115] It can be understood that in other embodiments, the second accommodating hole 301 may also be a blind hole structure.

[0116] It is understandable that in other embodiments, one end of the first component 61 may also pass through the second receiving hole 301 and protrude from the side of the second circuit board 30 facing away from the flexible circuit board 40 .

[0117] Referring to Figure 5, in one embodiment, the flexible circuit board 40 further includes a plurality of fourth sections 47. The plurality of fourth sections 47 are respectively connected to the first section 41 and extend toward the periphery of the second cavity 103. The wearable device 100 further includes a plurality of third components 63. The plurality of third components 63 are respectively disposed within the first cavity 101 and located on the periphery of the second cavity 103. Each fourth section 47 is connected to one or more third components 63. The plurality of third components 63 may be motors, grounding modules, MIC modules, barometers, and the like.

[0118] In another embodiment, as shown in Figure 12, in the wearable device 100c, the first section 41 and the fourth section 47 are in a non-flattened state, and the first support member 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 section 47 of the flexible circuit board 40 connecting the third element 63, and reduce the wall climbing height of the first section 41, thereby reducing the range of movement of the fourth section 47 and the first section 41, so as to reduce the risk of wrinkling caused by the force movement of the fourth section 47 and the first section 41.

[0119] In the above-mentioned wearable device 100, when the flexible circuit board 40 is connected to 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 and form a climbing section, thereby avoiding the problem of the flexible circuit board 40 climbing the wall; or the first support member 51 raises the second connection part 401 of the flexible circuit board 40 in the second cavity 103 along the arrangement direction Z to reduce the distance between the cavity wall of the first cavity 101 facing the second cavity 103 and the second connection part 401, thereby reducing the wall climbing height of the flexible circuit board 40 extending from the second cavity 103 to the first cavity 101, thereby avoiding the flexible circuit board 40 having a large size difference along the arrangement direction Z.

[0120] In addition, those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present application and are not intended to limit the present application. As long as they are within the spirit of the present application, appropriate changes and modifications to the above embodiments are within the scope of disclosure of the present application.

Claims

1. A wearable device, comprising: a housing having a first cavity and a second cavity arranged in sequence and communicating with each other; a first circuit board disposed in the first cavity; a second circuit board disposed in the second cavity and having a first connection portion; a flexible circuit board connected to and electrically conductive with the first circuit board, the flexible circuit board having a second connection portion; characterized in that the wearable device further comprises: a first support member connected between the first connection portion and the second connection 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 according to claim 1, wherein: The wearable device further comprises: a plurality of first components respectively connected to a side of the flexible circuit board facing the second circuit board; and a plurality of second components respectively connected to a side of the second circuit board facing the flexible circuit board.

3. The wearable device according to 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 dimension of the plurality of first components along the arrangement direction and the minimum dimension of the plurality of second components 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 dimension of the plurality of first components along the arrangement direction and the maximum dimension of the plurality of second components along the arrangement direction; and / or When the sum of the dimensions of the first component and the second component along the arrangement direction is less than the spacing between the flexible circuit board and the second circuit board, the projections of the first component and the second component along the arrangement direction on the second circuit board intersect.

4. The wearable device according to claim 2, wherein: The wearable device further comprises a connecting member; The projections of the first component and the second component along the arrangement direction on the second circuit board intersect, and the connecting member is bonded between the first component and the second component; and / or The connecting member is bonded between the first component and the second circuit board; and / or The connecting member is bonded between the second component and the flexible circuit board.

5. The wearable device according to any one of claims 2 to 4, characterized in that: The wearable device further comprises a battery, the battery being 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 defines a first accommodation hole, and a part of the second component is accommodated in the first accommodation hole; and / or The second circuit board is provided with a second accommodation hole, and a part of the first component is accommodated in the second accommodation hole.

7. The wearable device according to any one of claims 1 to 4, characterized in that: The flexible circuit board comprises a first section and a second section connected in sequence; The second section extends toward one side of the first section so that the second section is connected to the first circuit board; the second connection portion is disposed on the first section; the first section is in a flattened state.

8. The wearable device according to any one of claims 1 to 4, characterized in that: The flexible circuit board comprises a first section and a second section connected in sequence; the second section extends toward one side of the first section so that the second section is connected to the first circuit board; the second connection portion is disposed on the first section; The flexible circuit board further includes a plurality of fourth sections, which are connected to the first section and extend respectively towards the peripheral side of the second cavity; the wearable device further includes a plurality of third components, which are respectively arranged in the first cavity and located on the outer peripheral side of the second cavity, and each of the fourth sections is connected to at least one of the third components.

9. The wearable device according to any one of claims 1 to 4, characterized in that: The first support member 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 further includes a charging coil; the charging coil is located in the second cavity and is connected to the second circuit board or the flexible circuit board.

11. The wearable device according to claim 10, wherein: The wearable device further includes a magnet, which is arranged on the second circuit board and located in the second cavity, and the magnet is configured to adsorb 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 supports between the flexible circuit board and the second circuit board; The second support member is arranged at an interval from the first support member.

13. The wearable device according to any one of claims 1 to 4, characterized in that: A plurality of pads are respectively arranged on both sides of the first support member, and the projections of the plurality of pads on the second circuit board along the arrangement direction are close to the edge of the second circuit board, and the plurality of pads are respectively welded to the second connecting portion and the second circuit board.

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