CN218870278U

CN218870278U - Bottom shell assembly for portable electronic equipment and wearable equipment

Info

Publication number: CN218870278U
Application number: CN202222917761.6U
Authority: CN
Inventors: 李道德
Original assignee: Anhui Huami Information Technology Co Ltd
Current assignee: Anhui Huami Health Technology Co Ltd
Priority date: 2022-11-02
Filing date: 2022-11-02
Publication date: 2023-04-18
Anticipated expiration: 2032-11-02

Abstract

The utility model discloses a drain pan subassembly and wearable equipment for portable electronic equipment. The bottom shell assembly comprises a light-transmitting shell, and an optical sensor module and a circuit board which are arranged in the light-transmitting shell. The light-transmitting shell is integrally formed by a light-transmitting material and comprises a central area and a peripheral area. The support member includes a support member opening penetrating a thickness direction of the support member. The optical sensor module includes: seal light support, optical sensor and circuit board. The optical sensor is arranged on the circuit board. And the light sealing support is fixedly connected with the circuit board. The optical sensor module is attached to the inner surface of the central area of the light-transmitting shell through the opening of the support piece, and the optical sensor module and the support piece are arranged at intervals. Therefore, the optical sensor module and the support piece are not assembled, the light sealing effect of a device is not influenced by tolerance accumulation, and the joint connection mode cannot leak light, so that the two structures are combined to improve the light sealing reliability.

Description

Bottom shell assembly for portable electronic equipment and wearable equipment

Technical Field

The utility model relates to an electronic product technical field especially relates to a drain pan subassembly and wearable equipment for portable electronic equipment.

Background

Wearable devices, such as watches, bracelets, and headsets, all include optical sensor modules. The optical sensor module is to human emission light, and the light of receiving human reflection is in order to detect relevant physiological parameter, for example, detect the heart rate. Based on the function of the optical sensor, how to improve the light-sealing reliability of the optical sensor module is a problem to be solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a drain pan subassembly and wearable equipment for portable electronic equipment. The bottom shell assembly for the portable electronic equipment is good in light sealing effect.

The utility model provides a drain pan subassembly for portable electronic equipment. The bottom shell assembly comprises a light-transmitting shell, an optical sensor module and a support piece, wherein the optical sensor module and the support piece are positioned inside the light-transmitting shell; the light-transmitting housing is integrally formed of a light-transmitting material and includes a central region and a peripheral region. The support member includes a support member opening penetrating a thickness direction of the support member. The optical sensor module includes: the optical sensor is arranged on the circuit board, and the light sealing support is fixedly connected with the circuit board. The optical sensor module is attached to the inner surface of the central area of the light-transmitting shell through the opening of the support piece and is arranged at intervals with the support piece.

According to the arrangement, the optical sensor module is attached to the inner surface of the central area of the light-transmitting shell through the opening of the support piece and is arranged at intervals with the support piece, so that the optical sensor module is not assembled with the support piece, the light sealing effect of a device is not influenced by tolerance accumulation, and the attached connection mode does not leak light. Furthermore, because printing opacity shell integrated into one piece, and include central zone, like this, need not set up waterproof construction because integrated into one piece, central zone's area is great relatively, and then, has increased the effective area that physiological parameter (such as rhythm of the heart, blood pressure or blood oxygen) detected, can adopt bigger optical sensor module (such as the light receiving device of optical sensor module can be bigger), thereby promoted the precision and the validity that physiological parameter (such as rhythm of the heart, blood pressure or blood oxygen) detected, also be convenient for overall arrangement optical sensor module.

In the disclosed embodiment, the optical sensor module is fixedly connected to the inner surface of the light-transmissive housing, the support member is fixedly connected to the inner surface of the light-transmissive housing, and the optical sensor module and the support member are connected to different regions of the inner surface of the light-transmissive housing.

In some embodiments, the first surface of the light sealing support and the first surface of the circuit board are connected by means of adhesion.

In some implementations, the second face of the light-sealing support is adhesively connected to the inner surface of the light-transmissive envelope.

As set forth above, seal the first face of light support with the first face of circuit board bonds, bonds and to make and seal light support and circuit board combination closely and can not the light leak, improves the reliability of sealing the light, and in addition, bonds and also can make and seal light support and circuit board equipment simple. The second surface of the light sealing support is connected with the inner surface of the central area of the light-transmitting shell in a bonding mode, the light sealing support and the light-transmitting shell can be tightly combined through bonding without light leakage, the light sealing reliability is improved, and in addition, the light sealing support and the circuit board can be simply assembled through bonding.

In some embodiments, the light-transmissive envelope includes an envelope through-hole that penetrates a thickness direction of the light-transmissive envelope. The bottom shell assembly further comprises a charging terminal and a sealing element, wherein the charging terminal and the sealing element are arranged inside the light-transmitting shell, the charging terminal penetrates through the shell through hole and is exposed out of the outer surface of the light-transmitting shell, and the charging terminal is connected with the inner surface of the light-transmitting shell in a sealing mode through the sealing element.

In the above arrangement, the housing through hole is formed in the light-transmitting housing, the charging terminal penetrates through the housing through hole and is exposed out of the outer surface of the light-transmitting housing, and the charging terminal is connected with the inner surface of the light-transmitting housing in a sealing manner through the sealing member, so that the sealing is easy to realize. Finally, the charging terminal is exposed to the outer surface of the light-transmitting housing through the housing through hole, so that the area of the terminal head portion of the charging terminal is small, for example, the area of the terminal head portion can be considered to be equal to the area of the cross section of the housing through hole in the direction perpendicular to the axial direction.

In some embodiments, the seal is a hot melt adhesive.

According to the arrangement, the charging terminal is connected with the inner surface of the central area of the light-transmitting shell in a sealing mode through the hot melt adhesive tape, the charging terminal is waterproof and fixed through a simple structure, the waterproof effect is good, in addition, the hot melt adhesive tape is adopted for achieving the sealing connection, the size of the charging terminal can be smaller, and the lightening and thinning of a bottom shell assembly of portable electronic equipment (for example, wearable equipment) are facilitated.

In some embodiments, at least one through hole is formed in the edge of the central area, the through hole penetrates through the light-transmitting shell, an inner side opening is formed in the inner surface of the light-transmitting shell, and an outer side opening is formed in the outer surface of the light-transmitting shell; at least a portion of an outer surface of the central region is coated with a first metal coating covering the outer opening. At least a portion of the inner surface of the central region is coated with a second metal coating covering the inner side opening; the through hole is filled with a metal material; the first metal coating, the metal material, and the second metal coating form a signal transmission channel.

With the above arrangement, after the transmission channel is formed by the first metal coating, the metal material and the second metal coating, the transmission paths such as the conductive and/or heat-conductive paths do not need to bypass the side surface of the light-transmitting housing from the outer surface of the light-transmitting housing to the inner surface of the light-transmitting housing, so that the transmission path is shortened, the layout of other components is facilitated, and the electronic device is attractive.

In some embodiments, the through hole includes a first through hole section and a second through hole section that are communicated with each other, an aperture of the first through hole section gradually decreases in a direction from the inner side opening to the second through hole section, and the second through hole section is communicated with the outside of the light-transmitting casing through the outer side opening.

As set forth above, because the through-hole includes first through-hole section and the second through-hole section that communicates each other, and the second through-hole section passes through outside opening intercommunication the outside of printing opacity shell, like this, can adopt firstly the CNC technology to process into first through-hole section, then, the laser burns the remaining part and processes into the second through-hole section, compares with the mode that adopts laser to burn printing opacity shell and form the through-hole, burns partial thickness attenuation to improve machining efficiency, moreover, because first through-hole section reduces from the direction of internal surface to second through-hole section gradually, like this, to the through-hole intussuseption fill under the condition of medium that has electric conductivity ability, medium that has heat conductivity ability or the medium that has electric conductivity ability and heat conductivity ability, more do benefit to medium (such as silver thick liquid) flows to the surface.

In some embodiments, the first metal coating comprises at least two first coating regions in the shape of a sector ring, the at least two first coating regions being spaced apart from one another on the outer surface; and/or the second metal coating comprises at least two second coating areas in a sector ring shape, and the at least two second coating areas are positioned on the inner surface at intervals.

As the first coating area is in the shape of a sector ring, the contact area is large, the detection precision can be improved, and the measurement of ECG, body fat and the like is convenient. The second coating area is in a fan-ring shape, so that the contact area is large, signal acquisition and transmission are facilitated, and particularly, the fan-ring-shaped second coating area and the fan-ring-shaped first coating area are easy to improve the detection precision and realize the measurement of ECG, body fat and the like.

In some embodiments, the inner surface of the central region is coated with a barrier layer to separate the central region into an emitting light-transmissive region and a receiving light-transmissive region. The optical sensor module is attached to the isolation layer.

As set forth above, because the inner surface coating isolation layer of central zone, the optical sensor module laminate in the isolation layer, like this, the isolation layer can not only separate the light of transmission and received light for transmission and receipt do not influence each other, improve the accuracy of detecting, laminate in also can not the light leak behind the isolation layer, consequently, promoted the reliability of sealing light, and assemble both together more easily.

In some embodiments, the bottom case assembly includes a wireless charging coil. The wireless charging coil is bonded on the support piece through the back glue, and the wireless charging coil and the support piece are bonded with the light-transmitting shell as a whole.

According to the arrangement, the wireless charging coil is firstly bonded with the support piece, and then is integrally bonded with the light-transmitting shell, so that the components are simply assembled.

In other embodiments, the bottom case assembly includes a wireless charging coil. The wireless charging coil passes through the gum and bonds and is in the printing opacity shell, the printing opacity shell with mould plastics in the wireless charging coil mould, the material of moulding plastics constitutes support piece.

As set up above, because printing opacity shell and wireless charging coil bond the back, mould plastics in the whole mould again, and the material of moulding plastics constitutes support piece, like this, this kind of structure is compared in the mode of moulding plastics earlier out support piece, because there is printing opacity shell and wireless charging coil whole as the support, and support piece can be done thinner, and the shared space of drain pan subassembly on the thickness direction is little, in addition, the back of moulding plastics in the whole membrane, support piece with printing opacity shell constitutes wholly, and drain pan subassembly's waterproof nature is better.

In yet another embodiment, the bottom case assembly includes a wireless charging coil. The printing opacity shell mould moulds plastics in the mould, and the material of moulding plastics constitutes support piece, wireless charging coil with support piece bonds.

According to the above arrangement, in the above-mentioned structure, wireless charging coil bonds on the support piece, and support piece is the constitution of moulding plastics in the printing opacity shell mould, and like this, the yield of product is high, because if adopt the mode of moulding plastics in the mould, mould plastics in the mould and probably damage wireless charging coil.

On the other hand, the utility model discloses an embodiment discloses a wearable equipment. The wearable device comprises any one of the bottom shell assemblies. According to the above arrangement, the wearable device at least comprises the beneficial effects of the bottom shell assembly, which are not described again.

Drawings

Fig. 1 is an exploded view of a bottom case assembly in the related art;

FIG. 2 is a top view of a bottom housing assembly shown in FIG. 1;

FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is an exploded view of a bottom case assembly for a portable electronic device according to an embodiment of the present invention;

FIG. 5 is another exploded view of the bottom shell assembly of FIG. 4;

FIG. 6 is a top view of the bottom shell assembly shown in FIG. 4;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 6, without showing the first metal coating and the second metal coating;

FIG. 8 is an enlarged view of portion A of FIG. 7;

FIGS. 9 a-9 d are schematic diagrams of a first distribution of emitting and receiving transmissive regions;

FIGS. 10 a-10 f are schematic views of a second distribution of emitting and receiving transmissive regions;

FIGS. 11 a-11 f are schematic views of a third distribution of transmitting and receiving transmissive regions;

FIGS. 12 a-12 c are schematic diagrams of a fourth distribution of the emitting and receiving light-transmissive regions;

fig. 13 is an exploded view of a second bottom shell assembly, shown without the through holes, according to an embodiment of the present invention;

fig. 14 is an enlarged partial view of the conductive pin mounting of the bottom housing assembly shown in fig. 13;

fig. 15 is an exploded view of a third bottom shell assembly, shown without the through holes, according to an embodiment of the present invention;

fig. 16 is an enlarged partial view of the conductive pin mounting of the bottom housing assembly shown in fig. 15;

fig. 17 is a schematic view of a light-transmissive envelope bonded to a support member by a flexible bond, in accordance with an embodiment of the present invention;

fig. 18 is a schematic diagram illustrating a transparent housing and a supporting member bonded by dispensing according to an embodiment of the present invention, and emphasizes a dispensing path.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms a, an, etc. do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed after "comprises" or "comprising" is inclusive of the element or item listed after "comprising" or "comprises", and the equivalent thereof, and does not exclude additional elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

Referring to fig. 3 in conjunction with fig. 1 and 2, in the related art, a bottom case assembly for a portable electronic device includes an appearance lens 101, a light sealing bracket 2, a circuit board 5, an optical sensor, a housing 102, a support 6, and a wireless charging coil 103, wherein the optical sensor includes at least one light emitting device 3 and at least one light receiving device 4, and the optical sensor is disposed on the circuit board 5. Referring to fig. 2 in conjunction with fig. 1 and 3, the appearance lens 101 is disposed in the opening of the housing 102, the appearance lens 101 includes an emission transparent area 111 and a receiving transparent area 112, the emission transparent area 111 is disposed corresponding to the light emitting device 3, so that light emitted from the light emitting device 3 can pass through the emission transparent area 111 and emit to a human body. Accordingly, the light receiving transmission region 112 is disposed corresponding to the light receiving device 4, so that the light receiving device 4 can receive light reflected or refracted by the human body through the light receiving transmission region 112. The appearance lens 101, the light sealing support 2, the light emitting device 3, the light receiving device 4 and the circuit board 5 are matched to detect physiological parameters such as heart rate, blood oxygen and blood pressure through optical signals. The light sealing support 2 is used for isolating the light emitted by the light emitting device 3 from the light received by the light receiving device 4 so as to avoid light crosstalk. Referring to fig. 3 in conjunction with fig. 1, the supporting member 6 has one side connected to the inner surface of the housing 102 and the other side connected to the circuit board 5.

Specifically, with reference to fig. 1 and fig. 2 and fig. 3, in the bottom housing assembly, the appearance lens 101 is adhered to the supporting member 6 by dispensing or adhesive tape. In order to achieve a good waterproof function, the width of the waterproof structure 104 (the area where the waterproof structure 104 is located is indicated by a circle of shaded areas in fig. 1 and 2) around the periphery of the design lens 101 is at least 0.8mm. After analysis by a technician, the area where the waterproof structure 104 is located cannot be used as a light transmission area, so that the effective area of the appearance lens 101 is reduced, and the effective area of the appearance lens 10 is smaller; furthermore, the small area of the appearance lens 101 makes the areas of the emission light-transmitting area 111 corresponding to the light-emitting device 3 and the reception light-transmitting area 112 corresponding to the light-receiving device 4 relatively small, which both affect the accuracy and power consumption of physiological parameter detection and, in addition, affect the layout of the light-receiving device 4 and the light-emitting device 3.

Referring to fig. 3 in conjunction with fig. 1, on the other hand, the housing 102 includes a housing through hole 1021 penetrating through the housing 102. As shown in fig. 3, the appearance lens 101 is located in the housing through hole 1021, the appearance lens 101 is mounted (e.g., bonded by tape or dispensing) on the outer surface of the housing 102 and disposed in the housing through hole 1021, foam is disposed between the light-blocking mount 2 and the inner surface of the appearance lens 101, and the other side of the light-blocking mount 2 is mounted on the circuit board 5. As shown in fig. 3, in the bottom shell assembly, a is the wall thickness of the supporting member 6, B is the thickness of the light sealing bracket 2, and C is the thickness of the foam disposed between the light sealing bracket and the appearance lens. The circuit board 5 is fixed on one side surface of the support piece 6 through processes such as structural hot stamping and the like, and the foam compresses the appearance lens 101 to realize light sealing. The compression amount of the foam = B + C-A, and reliable light sealing can be realized only when the compression amount is proper. If the compression amount is too small, light leaks, if the compression amount is too large, the pressure is too large, and the design lens 101 may be pushed out. In actual production, the sealing effect is influenced by the problems of processing deformation of a structural part and assembly deformation of the whole machine. Therefore, the bottom shell assembly has high process requirements due to the existence of packaging matching of a plurality of devices, and the light sealing effect and the equipment reliability are difficult to ensure due to the packaging tolerance accumulation effect.

In order to solve above at least one kind of problem, the utility model provides a drain pan subassembly and be provided with wearable equipment of this drain pan subassembly. The following describes the structure of the bottom case assembly of the present invention in detail with reference to the accompanying drawings.

Referring to fig. 7 and 8 in combination with fig. 4, 5 and 6, an embodiment of the present invention provides a bottom shell assembly including a light-transmitting housing 1, an optical sensor module and a supporting member 6, wherein the optical sensor module includes a light-sealing bracket 2, an optical sensor (including at least one light-emitting device 3 and at least one light-receiving device 4), and a circuit board 5. The optical sensor is arranged on the circuit board 5, and the light sealing support 2 is fixedly connected with the circuit board 5. The manner of fixedly connecting the light-sealing holder 2 and the circuit board 5 is not limited to the manner of bonding as described below. Optical sensors are used to detect physiological parameters of the human body, such as heart rate, blood pressure or blood oxygen. The light-transmitting shell 1 is integrally formed by a light-transmitting material and comprises a central area 11 and a peripheral area 12, wherein the central area 11 corresponds to the optical sensor. Light transmission shell 1 itself allows light to pass, consequently, need not to realize the printing opacity region through the mode of trompil and setting up the outward appearance lens, has better outward appearance uniformity, and owing to integrative setting, need not to set up waterproof circle in the bonding department of outward appearance lens and shell to make central zone have bigger area and allow light to pass, be favorable to improving the accuracy that physiological information detected and reduce the equipment consumption.

One side surface of the light-sealing support 2 is connected with the light-emitting device and the light-receiving device, and the light-sealing support is used for isolating the light-emitting device 3 from the light-receiving device 4, for example, the light-sealing support is provided with at least one protruding member which is arranged around the light-emitting device 3 or the light-receiving device 4 and extends towards the circuit board, and the protruding member can be connected with the circuit board to prevent the light emitted by the light-emitting device 3 from being directly received by the light-receiving device 4. The light-sealing support allows light to pass through in the areas corresponding to the light-emitting device and the light-receiving device, so that the light signal emitted by the light-emitting device 3 passes through the central area 11 and then is emitted to a human body, and the light-receiving device 4 senses the light signal reflected or refracted from the human body and then returns through the central area 11. One of ordinary skill in the art can understand that the light-transmitting material used for the light-transmitting housing is not limited, for example, the light-transmitting housing 1 is made of glass, polycarbonate (PC for short), nylon (PolyAmide for short, PA for short), acrylic (PMMA for short), or the like.

With continuing reference to fig. 7 and 8 in conjunction with fig. 4, in the example shown in fig. 4, the support member 6 includes a support member opening 61 extending through a thickness direction of the support member 6. As shown in fig. 7 and 8, the optical sensor module is attached to the inner surface of the central region 11 of the light-transmitting casing 1 through the support opening 61, wherein the light-sealing support 2 of the optical sensor module may be directly attached to the inner surface of the light-transmitting casing 1, or at least one of a fresnel pattern layer and a light-shielding ink layer may be disposed between the light-sealing support 2 of the optical sensor module and the inner surface of the light-transmitting casing 1. As an example, a fresnel pattern is provided on a first surface of the light-blocking mount facing the light-transmissive envelope 1 and/or on a second surface facing the optical sensor. As another example, the light-transmitting housing 1 is provided on the inner surface thereof with a light-shielding ink layer provided with a light-shielding ink in the peripheral region, or provided in the central region except for the regions corresponding to the light-emitting device and the light-receiving device, to further avoid crosstalk. Support piece 6 sets up with the laminating of the internal surface of printing opacity shell 1, and support piece 6 and optical sensor module interval set up, like this, contactless and interact between support piece 6 and the optical sensor module, do not have tolerance and add up the light-sealing effect that influences equipment. For example, the supporting member 6 may be connected to an inner surface of at least a portion of the peripheral region of the light-transmitting housing 1, or the supporting member 6 may be in contact with the peripheral region and a portion of the central region of the light-transmitting housing 1, which is not limited by the embodiment of the present invention.

In other embodiments, a transparent or opaque substrate is disposed between the transparent casing 1 and the optical sensor module, and is attached to the light-sealing support of the optical sensor module to support the transparent casing. In some implementations, light-transmitting regions corresponding to the light-emitting device and the light-receiving device and a light-shielding region between the light-transmitting regions are disposed on the substrate, thereby further preventing crosstalk. Wherein, this base plate can realize the setting of shading region and printing opacity region through setting up the shading printing ink layer, perhaps the base plate can be by the preparation of light-tight material and realize the setting of shading region and printing opacity region through setting up the through-hole, etc., the embodiment of the utility model provides a do not do the injecing to the concrete realization of this base plate.

Referring to fig. 13 and 15, in some embodiments, the bottom case assembly may further include a charging member, such as a wireless charging coil or a charging terminal, which may be connected to a peripheral region of the light-transmissive housing 1, or may be connected to a central region of the light-transmissive housing 1 and disposed to be offset from the optical sensor, which will be described in detail below.

As set forth above, the optical sensor module is connected to the inner surface of the central region of the light-transmitting housing 1 through the opening 61 of the support member and is spaced from the support member, so that the optical sensor module is not assembled with the support member 6, and the light-sealing effect of the device is not affected by tolerance accumulation, thereby improving the light-sealing reliability. Furthermore, because printing opacity shell 1 need not to set up by printing opacity material integrated into one piece trompil, outward appearance lens and waterproof construction 104 for central zone 11's the regional area of printing opacity is great relatively, and then, is favorable to promoting the precision that physiological parameter detected and reduces the equipment consumption, also is convenient for overall arrangement optical sensor module.

Referring to fig. 5 and 7, in some embodiments, the light-transmissive housing 1 includes a peripheral region 12 located in the central region 11, the peripheral region 12 and the central region 11 form an arch, and the central region 11 is a boss, thereby forming a mounting cavity for accommodating the optical sensor module. The light-transmitting case 1 is suitable for a wristwatch, a bracelet, or an earphone, etc.

In some embodiments, the bottom case assembly further comprises a charging member. Referring to fig. 7 and 8 in conjunction with fig. 4 and 5, the charging means includes a wireless charging coil 103. Alternative assembly of wireless charging coil 103 is described below in conjunction with the associated figures.

1) Wireless charging coil 103 fixed connection is in support piece 6, and for example wireless charging coil 103 bonds in support piece 6 through gum 105, then, wireless charging coil 103 and support piece 6 are connected with printing opacity shell 1 again as a whole, for example bond with printing opacity shell 1. Thus, the wireless charging coil 103 is connected with the support member 6 and then integrally connected with the light-transmitting shell 1, and the components are easy to assemble.

As shown in fig. 5. In some embodiments, the bottom shell assembly further comprises an adhesive backing 105, wherein the adhesive backing 105 comprises a plurality of adhesives uniformly distributed along the circumference of the support 6. Figure 17 illustrates eight backsizes 105 evenly distributed. The back adhesive 105 bonds the light-transmissive envelope 1 and the support 6. The backing adhesive 105 may be foam adhesive or the like.

In some examples, the adhesive 105 is achieved by dispensing. In the example shown in fig. 18, the adhesive is applied to the support 6 or the light-transmitting housing 1 to form a closed ring 601 and a first segment 602 connected to the closed ring 601. The first segments 602 are spaced apart along the circumference of the closed ring 601. Adjacent first segments 602 and a segment of the closed loop 601 between the adjacent first segments 602 enclose a device mounting area 603. The adhesive backing further comprises a second section 604 outside the device mounting area 603, and the second section 604, the adjacent first section 602 and a section of the closed loop 601 opposite to the second section 604 enclose a closed outer loop 605. The bonding between the support member 6 and the light-transmitting shell 1 is realized through the above-mentioned dispensing path.

2) Wireless charging coil 103 direct connection is in printing opacity shell 1, for example, bonds in printing opacity shell 1 through gum 105, then to printing opacity shell 1 and wireless charging coil 103 whole mould internal injection moulding, forms support piece 6. As the setting, because light-transmitting shell 1 bonds the back with wireless charging coil 103, and whole intramode is moulded plastics again, the formation of moulding plastics support piece 6 compares in the mode of moulding plastics out support piece 6 earlier, because there is light-transmitting shell 1 and wireless charging coil 103 whole as supporting, support piece 6 can be done thinner, and the shared space of drain pan subassembly on the thickness direction is little, in addition, whole intramembrane back of moulding plastics, support piece 6 with light-transmitting shell 1 constitutes whole combination inseparable, and drain pan subassembly's waterproof nature is better.

3) Mould plastics in the mould to printing opacity shell 1, the formation of moulding plastics support piece 6, then with wireless charging coil 103 connect in support piece 6, for example, support piece 6 digs the hole after with wireless charging coil 103 bond in the hole of digging. Therefore, the requirement on the injection molding process can be reduced, and the yield of products can be improved.

In some embodiments, the support 6 and the light-transmissive housing 1 may also be assembled in the manner described above without the wireless charging coil 103.

With reference to fig. 7 and 8 in combination with fig. 4 and 6, an isolation layer 113 is disposed on an inner surface of the central region 11, and the isolation layer 113 is used to isolate the light-transmitting emitting region 111 corresponding to the light-emitting device 3 and the light-receiving region 112 corresponding to the light-receiving device 4 in the light-transmitting housing 1. The isolation layer 113 is used for light isolation between the light emitting device 3 and the light receiving device 4, and the structure thereof is not limited, for example, the isolation layer 113 is a black silk screen coated in fig. 4, 6, 13 and 14. In the embodiment of the present invention, at least one emission light transmission region 111 corresponds to at least one light emitting device 3, and at least one reception light transmission region 112 corresponds to at least one light receiving device 4. As shown in fig. 7 and 8, the optical sensor module is attached to the isolation layer 113. For example, the top of the light-sealing support 2 is bonded to the isolation layer 113, for example, by a back adhesive or tape.

As set forth above, because the inner surface coating isolation layer 113 of central zone 11, the optical sensor module laminating in isolation layer 113, like this, the isolation layer can not only separate the light of transmission and received light for transmission and receiving do not influence each other, improve the accuracy of detecting, laminate in also can not the light leak behind the isolation layer, consequently, promoted the reliability of sealing light, and assemble both together more easily.

The implementation of the light emitting device and the light receiving device and their corresponding light-transmitting regions will be described in detail below. Referring to fig. 9a to 9d in conjunction with fig. 6 and 4, fig. 9a to 9d illustrate an alternative implementation of the light-emitting and light-transmitting region 111 and the light-receiving and light-transmitting region 112. The central region 11 includes an emitting light-transmitting region 111 and a plurality of receiving light-transmitting regions 112. The light emitting devices 3 are disposed in one-to-one correspondence with the emission transmissive regions 111. The light receiving devices 4 are disposed in one-to-one correspondence through the receiving light transmitting regions 112. In order to facilitate the distinction between the transmitting light-transmitting region 111 and the receiving light-transmitting region 112, the transmitting light-transmitting region 111 is indicated by a dotted circle and the receiving light-transmitting region 112 is indicated by a solid circle in fig. 9a to 9 d. The transmitting and light-transmitting area 111 is located at the center of the central area 11, the center is a circle center when the central area 11 is circular, and the center is a square (the center is an intersection of diagonal lines when the central area 11 is rectangular or square). The light receiving and transmitting regions 112 are uniformly distributed along the circumference of the central region 11 at the edge of the central region 11. As set forth above, through the above-mentioned transmission light transmission zone 111 in the center of central region 11, and receive light transmission zone 112 along circumference evenly distributed at the edge of central region 11, like this, above-mentioned structure can realize that the center transmits the edge and evenly receives, more can promote the precision that physiological parameter detected.

Referring to fig. 10a to 10f, fig. 10a to 10f illustrate another alternative implementation of the light-emitting and light-receiving

transmissive regions

111 and 112. This layout differs from the first layout in that: the number of the light emitting devices 3 may be plural, and in the embodiment shown in fig. 10a to 10f, the number of the light emitting devices 3 is two, however, the light emitting devices 3 are still located at the center of the central region 11, and the receiving devices 4 are still uniformly distributed along the circumferential direction at the edge of the central region 11, or are symmetrically arranged with the light emitting devices as the center. Of course, the number of the light emitting devices 3 may not be limited to two as long as they are located at the center of the central region 11. The centers of the central regions 11 may be evenly distributed around the center or symmetrically distributed about the center as shown.

Referring to fig. 11a to 11f, fig. 11a to 11f illustrate another alternative implementation of the light-emitting and light-receiving

transmission regions

111 and 112. In this layout, the transmitting light-transmitting region 111 is indicated by a dotted circle and the receiving light-transmitting region 112 is indicated by a solid circle in fig. 11a to 11 f. The central region 11 includes one or more transmitting transparent regions 111 and one or more receiving transparent regions 112. The light emitting transparent regions 111 are disposed in one-to-one correspondence with the light emitting devices 3, and the light receiving transparent regions 112 are disposed in one-to-one correspondence with the light receiving devices 4. As shown in fig. 11b, 11c and 11e, the transmitting and receiving light-transmitting

regions

111 and 112 are distributed only in the circumferential direction of the central region 11, wherein a plurality of transmitting and receiving light-transmitting regions may be uniformly distributed in the circumferential direction, or a plurality of transmitting and receiving light-transmitting regions 111 may be uniformly distributed in the circumferential direction of the central region 11, and one or more receiving light-transmitting regions 112 are uniformly distributed on both sides of each transmitting and transmitting region 111, in fig. 11b, 11c and 11e, there are two transmitting and transmitting regions 111 symmetrically arranged with respect to the center of the central region 11, in fig. 11b, the transmitting and receiving light-transmitting

regions

111 and 112 are uniformly distributed in the axial direction, and the distances between the adjacent two regions are equal. In fig. 11c, two cells are included, each cell includes an emitting light-transmitting region 111 and two receiving light-transmitting regions 112 adjacent thereto, the plurality of receiving light-transmitting regions 112 are not uniformly distributed in the circumferential direction, and the distance between adjacent regions within the same cell is smaller than the distance between adjacent regions of different cells. In fig. 11e, two light-receiving transmissive regions 112 and two light-receiving transmissive regions 112 are arranged in central symmetry. At this time, no component may be provided in the center of the central region 11, or other components, such as a charging component or other components, may be provided to contribute to saving of the equipment space.

Alternatively, as shown in fig. 11a, 11d and 11f, the emitting light-transmitting regions 111 are uniformly distributed in the circumferential direction of the central region 11, and the receiving light-transmitting region 112 is disposed in the center of the central region 11. In the examples shown in fig. 11a and 11d, one or more receiving light-transmitting regions may be disposed in the circumferential direction, and the one or more receiving light-transmitting regions may be distributed symmetrically in the center, or uniformly along the axial direction, or symmetrically with respect to the emitting light-transmitting region, which is not limited herein.

Referring to fig. 12a to 12c, the plurality of transmitting transparent regions 111 and the plurality of receiving transparent regions 112 are alternately distributed at equal intervals along the circumference of the central region 11 at the edge of the central region 11 as a whole. As shown in fig. 12a, the center may be blank or provided with other components such as a charging component. Alternatively, as shown in fig. 12b, the center of the central region 11 is provided with a light-receiving transparent region 112. Alternatively, as shown in fig. 12c, the center of the central region 11 is provided with an emission light-transmitting region 111. As set forth above, through emitting light-transmitting zone 111 and receiving light-transmitting zone 112 along the equal interval alternate distribution of circumference at the edge of central zone 11, like this, above-mentioned structure can realize even transmission and receipt, more can promote the precision that physiological parameter detected.

It should be understood that the above description has been made with an example in which the emission light-transmitting region and the reception light-transmitting region are provided in one-to-one correspondence with the light-emitting device and the light-receiving device, respectively. In other implementations, there may also be a one-to-many relationship between the emitting light transmissive region and the light emitting device or between the receiving light transmissive region and the light receiving device. For example, in the examples shown in fig. 10a to 10f, only one emission light-transmitting region is provided, but the embodiment of the present invention is not limited thereto.

Referring to fig. 7 and fig. 8, in some embodiments, the first surface of the light-sealing support 2 is connected to the first surface of the circuit board 5 by adhesion, so that the light-sealing support 2 is fixedly connected to the circuit board 5. As set up above, seal the first face of light support 2 with the first face bonding of circuit board 5 bonds, and the bonding can make to seal light support 2 and circuit board 5 combine closely and can not the light leak, improves the reliability of sealing the light, and in addition, the bonding also can make to seal light support 2 and circuit board 5 equipment simple.

Referring to fig. 7 and 8, in some embodiments, the second surface of the light-sealing support 2 is connected to the inner surface of the central region 11 of the light-transmitting casing 1 by adhesion. As set forth above, the second surface of the light-sealing support 2 is connected with the inner surface of the central area 11 of the light-transmitting casing 1 in an adhesion manner, so that the light-sealing support 2 and the light-transmitting casing 1 are tightly combined without light leakage by adhesion, the light-sealing reliability is improved, and in addition, the light-sealing support and the circuit board can be simply assembled by adhesion.

The skilled person will appreciate that in some embodiments it may be that the first side of the light-blocking mount 2 is adhesively bonded to the first side of the circuit board 5 and the second side of the light-blocking mount 2 is adhesively bonded to the inner surface of the central region 11 of the light-transmissive envelope 1.

In some implementations, the charging component includes a charging terminal. Referring to fig. 13 and 14, the light-transmissive envelope 1 includes at least one envelope through-hole 13 penetrating through a thickness direction of the light-transmissive envelope 1, where 2 envelope through-holes 13 are exemplarily shown. The bottom case assembly includes a charging terminal 7 and a sealing member 8 disposed inside the light-transmissive case 1. Two of the housing through holes 13 and two of the charging terminals 7 are illustrated in fig. 13, and the housing through holes 13 are located in the peripheral region 12, for example, the charging terminals 7 are connected to the peripheral region except for the support connection region, or the charging terminals 7 are disposed in the support opening and connected to the light-transmitting housing 1 through the support opening. In other implementations, the charging terminal is connected within the central region and is located in a light-blocking region outside the transmitting and receiving light-transmitting regions. The charging terminal 7 is exposed to the outer surface of the light-transmitting housing 1 through the housing through hole 13. The charging terminal 7 is hermetically connected to the inner surface of the light-transmitting case 1 through the sealing member 8 to achieve water resistance, and the structure thereof is not limited.

As set forth above, by providing the housing through hole 13 on the light-transmitting housing 1, and making the charging terminal 7 pass through the housing through hole 13 and expose on the outer surface of the light-transmitting housing 1, and the charging terminal 7 is connected with the inner surface of the light-transmitting housing 1 through the sealing member 8 in a sealing manner, in this way, the housing through hole 13 is sealed outside the housing through hole 13, so that the sealing is easily realized, especially in the case that the light-transmitting housing 1 is made of glass material, the sealing manner is adopted to not only achieve the sealing effect, but also the light-transmitting housing 1 is not broken due to the sealing, and the like, because if the light-transmitting housing 1 is made of glass, the light-transmitting housing 1 is broken due to the sealing inside of the housing through hole 13. Finally, the charging terminal 7 is exposed to the outer surface of the light-transmitting housing 1 through the housing through hole 13, so that the area of the terminal head portion 70 of the charging terminal 7 is small, for example, the area of the terminal head portion 70 can be considered to be equal to the area of the cross section of the housing through hole 13 in the direction perpendicular to the axial direction.

With continued reference to fig. 14 and 13, the sealing member 8 is a hot melt adhesive tape. In other embodiments, the sealing member 8 is dispensed.

As set forth above, through the hot melt sticky tape realize charging terminal 7 with the sealed connection of inner surface of the central zone 11 of printing opacity shell 1, and then, realize sealed shell through-hole 13, realize through simple structure that charging terminal 7 is waterproof and fixed, moreover, water-proof effects is good, in addition, adopts the hot melt sticky tape to realize connecting, can also make charging terminal 7's size less, is favorable to the frivolousization of drain pan subassembly, if combine fig. 16 detailed later.

Referring to fig. 16 and 15, fig. 16 and 15 disclose an embodiment in which the sealing member 8 is used to seal the housing through hole 13. The detailed description is as follows: the light-transmissive envelope 1 comprises an envelope through-hole 13 located outside the central region 11 and extending through the light-transmissive envelope 1. Fig. 15 illustrates two housing through holes 13 and two charging terminals 7, with the housing through holes 13 both located outside the central region 11. The support 6 includes a mounting hole 63 extending through the support 6. Sealing member 8 for with 7 covers of charging terminal are equipped with the sealing washer, for example, charging terminal 7 is provided with the round holding tank, and the sealing washer is located in the holding tank. The charging terminal 7 passes through the housing through hole 13 and the mounting hole 63 and is electrically connected to the circuit board 5, and of course, the charging terminal 7 is still exposed to the outer surface of the light-transmitting housing 1. The sealing element 8 (sealing ring) is sealingly arranged in the mounting hole 63, because the support element 6 is located in the mounting cavity, in which case the sealing element 8 is located in the mounting cavity. As described above, the sealing member 8 (sealing ring) is sealed in the mounting hole 63 to achieve waterproofing, and waterproofing is achieved by a simple structure on the light-transmitting housing 1 (particularly, when the light-transmitting housing 1 is made of glass), and the waterproofing effect is good.

As described below in detail with reference to fig. 16, how the bottom chassis assembly can be made thinner by using a thermal melting adhesive tape or dispensing, comparing fig. 16 and 14, the charging terminal 7 includes a terminal head portion 70 electrically connected to an external charger and a pin middle portion 72 connected to the terminal head portion 70 and the pin tail portion 71. In order to provide the sealing ring, the length of the middle portion 72 of the terminal in fig. 16 is longer than the length of the middle portion 72 of the terminal in fig. 14, and the charging terminal 7 in fig. 16 needs to penetrate through the mounting hole 63, at least two reasons mentioned above make the charging terminal 7 shown in fig. 16 longer than the charging terminal 7 shown in fig. 14, and in addition, because the charging terminal 7 and the light-transmitting housing 1 are bonded by using a hot-melt adhesive tape or dispensing (specifically, the middle portion 72 of the pin is bonded with the light-transmitting housing 1), the pin tail portion 71 in fig. 14 can be eliminated or thinner in some cases, and the length of the charging terminal 7 shown in fig. 16 is made longer than the charging terminal 7 shown in fig. 14 by using a bonding manner, and the distance between the circuit board 5 and the central region 11 is increased due to the longer charging terminal 7, so the bottom case assembly is heavier and thicker, and therefore, the bonding of the hot-melt adhesive tape to the charging terminal 7 and the light-transmitting housing 1 is beneficial to making the bottom case assembly thinner.

With continued reference to fig. 16, the charging terminals 7 include terminal tail portions 71. The terminal tail portion 71 is provided with an undercut 711. The terminal tail 71 passes through the mounting hole 63 and is fastened to the supporting member 6 by the inverted fastener 711. As set forth above, the back-off 711 of the terminal tail 71 is fastened to the support member 6, so as to prevent the charging terminal 7 from coming off, and further ensure the sealing performance of the sealing ring, and further, the waterproof effect is good.

Referring to fig. 14 in combination with fig. 13 and 16 in combination with fig. 15, in the embodiment of the present invention, there are various ways of electrically connecting the charging terminal 7 and the circuit board 5, and in the embodiment of the present invention, the bottom shell assembly includes a conductive sheet 9, and the conductive sheet 9 is, for example, a steel sheet. The conductive plate 9 is welded to the charging terminal 7, and is electrically connected to and fixed to the circuit board 5, and more specifically, the conductive plate 9 is fixed to the circuit board 5 by a Surface Mount Technology (SMT). The circuit board 5 is exposed with copper, and the copper is conducted with the conducting strip 9. The terminal tail portion 71 of the charging terminal 7 is welded to the conductive plate 9 by laser welding. As set forth above, since the conductive plate 9 is welded to the charging terminal 7 and is electrically connected and fixed to the circuit board 5, not only the fixation between the charging terminal 7 and the circuit board 5 is achieved, but also the conduction function is achieved, and the bottom case assembly has a simple structure.

Referring to fig. 15 and 13, in some embodiments, the bottom housing assembly includes a support member 6 located inside the light-transmissive housing 1, an outer surface of the support member 6 is attached to an inner surface of the light-transmissive housing 1, and the circuit board 5 and the support member 6 are assembled into a whole by a positioning post 62. How to assemble the whole body by the positioning posts 62 can be done in various ways, for example, the circuit board 5 is provided with the positioning holes 51, and the positioning posts 62 are located in the positioning holes 51 and assembled into the whole body by the hot stamping process. As set forth above, because circuit board 5 with support piece 6 assembles for whole and the internal surface of printing opacity shell 1 and support piece 6's surface laminating, like this, the three constitutes wholly, damage when avoiding falling printing opacity shell 1. Here, although the reliability of the sealing is inferior to the reliability of the embodiment in which the circuit board 5 and the sealing holder 2 are both attached to the holder 6, the reliability is superior to the embodiment in which the design lens 101 and the circuit board 5 are attached to the holder 6 and the sealing holder 2 is attached to the circuit board 5.

Referring to fig. 4 in combination with fig. 6, fig. 7 and fig. 8, the central region 11 is provided with at least one through hole 114, the through hole 114 penetrates through the light-transmitting housing 1 along the thickness direction of the light-transmitting housing 1, an inner opening (not labeled in the figure) is formed on the inner surface of the light-transmitting housing 1, and an outer opening (not labeled in the figure) is formed on the outer surface of the light-transmitting housing 1. The through hole 114 may be provided in a light-shielding region other than the transmitting and receiving light-transmitting regions, for example, at the edge of the central region, or at another position. In some embodiments, at least a portion of the through holes 114 are the housing through holes 13, but the embodiments of the present invention are not limited thereto.

At least a portion of the outer surface of the central region 11 is coated with a first metal coating 20, the first metal coating 20 covering the outer opening. Of course, the first metal coating 20 is provided with through holes on the emission and reception light-transmitting regions, respectively, so as not to affect the emission and reception of light.

With continued reference to fig. 4 in conjunction with fig. 6, 7 and 8, at least a portion of the inner surface of the central region 11 is coated with a second metal coating 30. The second metal coating 30 covers the inner side opening. In an embodiment of the present invention, the second metal coating 30 includes at least two second coating regions 301 in the shape of a sector ring, and the at least two second coating regions 301 are spaced apart from each other on the inner surface of the central region 11. The second metal coating 30 can transmit the physiological parameters collected by the first metal coating 20 to the circuit board, and the circuit board processes the physiological parameters to obtain a measurement result, and the structure of the second metal coating is not limited to the sector ring shape as shown in the figure. As set forth above, the second coating region 301 has a fan-ring shape, so that the contact area is large, and the signal transmission is convenient, and particularly, the fan-ring shaped second coating region 301 and the fan-ring shaped first coating region 201 can improve the detection precision and realize the measurement of ECG and body fat.

The through hole 114 is filled with a metal material; the first metal coating 20, the metal material, and the second metal coating 30 form a signal transmission channel. In some embodiments, the metal material can also perform other functions such as heat transfer in addition to transmitting an electrical signal, that is, the transmission channel may be an electrical transmission channel, a heat transmission channel or other transmission channels, which is not limited by the embodiments of the present invention.

With the above arrangement, after the transmission channel is formed by the first metal coating 20, the metal material, and the second metal coating 30, the transmission path such as the electric conduction path and/or the heat conduction path does not need to go around the side surface of the light-transmitting housing 1 from the outer surface to the inner surface of the light-transmitting housing 1, which shortens the transmission path, facilitates the layout of other components, and makes the electronic device beautiful.

The shape of the through hole 114 is not limited based on the function of the through hole 114, and may be, for example, a cylindrical hole or the like. One embodiment of the via 114 is described below in conjunction with the figures.

With continued reference to fig. 7 and 8, in some embodiments, the through hole 114 includes a first through hole section 1141 and a second through hole section 1142 that are connected to each other, and the aperture of the first through hole section 1141 decreases from the inner opening to the second through hole section 1142. Based on the gradually decreasing concept, the first through hole section 1141 may be a circular truncated cone or a truncated pyramid. The second through hole section 1142 communicates with the outside of the light-transmitting housing 1 through the outside opening.

As set forth above, since the through hole 114 includes the first through hole section 1141 and the second through hole section 1142 that are communicated with each other, and the second through hole section 1142 is communicated with the outside of the light-transmitting housing 1 through the outer side opening, in this way, the CNC process may be firstly used to process the first through hole section 1141, and then the laser burns off the remaining portion to process the second through hole section 1142, compared with the mode of forming a through hole by using laser to burn off the light-transmitting housing, the thickness of the burned off portion becomes thinner, so as to improve the processing efficiency, furthermore, since the direction of the first through hole section 1141 from the inner surface to the second through hole section 1142 is gradually reduced, so, in the case of filling the medium having electrical conductivity, the medium having thermal conductivity, or the medium having electrical conductivity and thermal conductivity into the through hole 114, it is more favorable for the medium (such as silver paste) to flow to the outer surface.

Referring to fig. 4, the first metal coating 20 includes at least two fan-shaped first coating regions 201, and the at least two first coating regions 201 are spaced apart from each other on the outer surface of the central region 11, so that the two spaced apart first coating regions 201 can form two electrodes. The skilled artisan will appreciate that the number of fan-annular first coating regions 201 is not limited to two as shown. Further, the first metal coating 20 is not limited to the shape of the first coating region 201 as shown in the figure, so as to detect the physiological parameters of the human body.

As described above, since the first coating region 201 has a fan-ring shape, the contact area is large, which can improve the detection accuracy and facilitate the measurement of ECG, body fat, and the like.

Referring to fig. 4, the second metal coating 30 includes at least two second coating regions 301 in a sector ring shape, and the at least two second coating regions 301 are spaced apart from each other on the inner surface of the central region 11. The second metal coating 30 can transmit the physiological parameters collected by the first metal coating 20 to the circuit board 5, and the circuit board 5 obtains the measurement result after processing, and the structure is not limited to the fan-ring shape as shown in the figure.

As set forth above, the second coating region 301 has a fan-ring shape, so that the contact area is large, and the signal transmission is convenient, and particularly, the fan-ring shaped second coating region 301 and the fan-ring shaped first coating region 201 can improve the detection precision and realize the measurement of ECG and body fat.

In addition, in some embodiments, the first metal coating 20 may also include at least two fan-ring shaped first coating regions 201, however, the shape of the second metal coating 30 is not limited; alternatively, the second metal coating 30 includes at least two second coating regions 301 having a fan-ring shape, and the shape of the first metal coating 20 is not limited.

On the other hand, the utility model discloses an embodiment discloses a wearable equipment. The wearable device comprises any one of the bottom shell assemblies described above. How the bottom shell assembly and other parts form the wearable device together can adopt any structure, and details are not repeated.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bottom case assembly for a portable electronic device, comprising a light-transmissive outer case (1) and an optical sensor module and a support (6) inside the light-transmissive outer case (1), wherein;

the light-transmitting shell (1) is integrally formed by light-transmitting materials and comprises a central area (11) and a peripheral area (12);

the support (6) comprises a support opening (61) penetrating through the thickness direction of the support (6);

the optical sensor module includes: the device comprises a light sealing support (2), an optical sensor and a circuit board (5), wherein the optical sensor is arranged on the circuit board (5), and the light sealing support (2) is fixedly connected with the circuit board (5);

the optical sensor module is attached to the inner surface of the central area (11) of the light-transmitting shell (1) through the support piece opening (61) and is arranged at intervals with the support piece (6).

2. A bottom shell assembly according to claim 1, wherein the first face of the light-sealing support (2) is connected to the first face of the circuit board (5) by means of gluing;

and/or the second surface of the light sealing support (2) is connected with the inner surface of the central area (11) of the light-transmitting shell (1) in an adhesion mode.

3. A bottom shell assembly as claimed in claim 1, wherein said light-transmissive envelope (1) comprises an envelope through hole (13) passing through a thickness direction of said light-transmissive envelope (1);

the bottom shell assembly further comprises a charging terminal (7) and a sealing element (8), wherein the charging terminal (7) is arranged inside the light-transmitting shell (1), the charging terminal (7) penetrates through the shell through hole (13) to be exposed out of the outer surface of the light-transmitting shell (1), and the charging terminal (7) is connected with the inner surface of the light-transmitting shell (1) in a sealing mode through the sealing element (8).

4. A bottom shell assembly according to claim 3, wherein said sealing member (8) is a hot melt adhesive.

5. The bottom shell assembly according to claim 1, wherein at least one through hole (114) is formed at an edge of the central region (11), the through hole (114) penetrates through the light-transmissive shell (1) along a thickness direction of the light-transmissive shell, an inner side opening is formed on an inner surface of the light-transmissive shell (1), and an outer side opening is formed on an outer surface of the light-transmissive shell (1);

at least a portion of the outer surface of the central region (11) is coated with a first metal coating (20), the first metal coating (20) covering the outer opening;

at least a portion of the inner surface of the central region (11) is coated with a second metal coating (30), the second metal coating (30) covering the inner opening;

the through hole (114) is filled with a metal material;

the first metal coating (20), the metal material and the second metal coating (30) form a signal transmission channel.

6. The bottom shell assembly according to claim 5, wherein the through hole (114) comprises a first through hole section (1141) and a second through hole section (1142) which are communicated with each other, an aperture of the first through hole section (1141) is gradually reduced in a direction from the inner opening to the second through hole section (1142), and the second through hole section (1142) is communicated with an outside of the light-transmitting case (1) through the outer opening.

7. A bottom shell assembly as claimed in claim 5, wherein said first metal coating (20) comprises at least two fan-shaped first coated zones (201), said at least two first coated zones (201) being located at said outer surface in a spaced relationship;

and/or the second metal coating (30) comprises at least two second coating zones (301) in the shape of sector rings, and the at least two second coating zones (301) are positioned on the inner surface at intervals.

8. A bottom shell assembly as claimed in claim 1, wherein the inner surface of said central area (11) is coated with an isolating layer (113) to divide said central area into an emitting light-transmitting zone (111) and a receiving light-transmitting zone (112);

the optical sensor module is attached to the isolation layer (113).

9. A bottom shell assembly according to claim 1, characterized in that it comprises a wireless charging coil (103), said wireless charging coil (103) being glued on said support (6) by means of a glue, the wireless charging coil (103) and the support (6) being glued as a whole with said light-transmissive envelope (1);

or the wireless charging coil (103) is bonded to the light-transmitting shell (1) through back glue, the light-transmitting shell (1) and the wireless charging coil (103) are subjected to in-mold injection molding, and the support piece (6) is formed by injection molding materials;

or, printing opacity shell (1) mould plastics in the mould, and the material of moulding plastics constitutes support piece (6), wireless charging coil (103) with support piece (6) bond.

10. A wearable device characterized by comprising the bottom case assembly of any one of claims 1 to 9.