CN212413241U - Waterproof side key device and electronic equipment - Google Patents

Abstract

The present disclosure relates to a waterproof side key device and an electronic apparatus, the waterproof side key device including: the separation wall defines a first cavity and a second cavity which are separated from each other in the shell, and the separation wall comprises a through hole which is communicated with the first cavity and the second cavity; and a first flexible circuit board disposed on a surface of the partition wall in the first cavity and hermetically connected to the partition wall at least around the through hole, the first flexible circuit board being electrically connected to the internal circuit board in the second cavity through an electrical connection member penetrating the through hole. Through set up the through-hole on the partition wall, adopt the electric connector who runs through the through-hole to be located the first flexible circuit board in first cavity and be located the internal circuit board of second cavity and be linked together. The waterproof side key device cancels a bendable part on the first flexible circuit board, avoids a gap formed by the first flexible circuit board crossing the partition wall, and is beneficial to improving the waterproof performance.

Description

Waterproof side key device and electronic equipment

Technical Field

The present disclosure relates to the field of electronic product technologies, and in particular, to a waterproof side key device and an electronic apparatus.

Background

For electronic products and even all electric products, the waterproof and moistureproof are very outstanding problems. Basically, all electrical products can cause serious damage after being soaked in water or affected with damp, thereby greatly influencing the use of users and even bringing about potential safety hazards. Currently, due to the continuous development of mobile terminal technology, mobile terminals such as smart mobile phones bring more and more convenience and experience for daily life of users, and become necessary products for life. Meanwhile, the requirements of users on the functions realized by the intelligent mobile phone are more and more diverse. Therefore, the usage scenario of the mobile terminal is very complicated, so that the waterproof problem of the mobile terminal is more and more prominent. In order to enhance the user experience, many manufacturers of mobile terminals take the improvement of the waterproof performance of the mobile terminals as an important research and development direction.

In the related art, in the side key waterproof structure of the mobile terminal, the flexible circuit board and the circuit board are respectively located at both sides of the retaining wall. The flexible circuit board is provided with a bendable part, and the bendable part is connected with the circuit board on the other side by crossing the retaining wall. However, in this structure, a gap may occur between the bendable portion and the battery cover, and water may permeate into the other side of the retaining wall through the gap, resulting in a decrease in waterproof performance.

SUMMERY OF THE UTILITY MODEL

To overcome the problems in the related art, the present disclosure provides a waterproof side key device and an electronic apparatus.

According to a first aspect of embodiments of the present disclosure, there is provided a waterproof side key device including: a housing, a partition wall defining a first cavity and a second cavity isolated from each other within the housing, and the partition wall including a through hole communicating the first cavity and the second cavity; and a first flexible circuit board disposed on a surface of the partition wall within the first cavity and hermetically connected to the partition wall at least around the through hole, the first flexible circuit board being electrically connected with an internal circuit board located within the second cavity through an electrical connector penetrating through the through hole.

In one embodiment, the waterproof side key device further comprises a first waterproof member, and the first flexible circuit board is hermetically connected to the partition wall through the first waterproof member.

In one embodiment, the surface of the first flexible circuit board facing the partition wall is provided with a wiring region, the wiring region is aligned with the through hole, one end of the electrical connector is electrically connected with the wiring region, and the other end of the electrical connector is electrically connected with the internal circuit board.

In yet another embodiment, the first flexible circuit board includes a plurality of terminal pads disposed at the terminal area, and the electrical connector is electrically connected to the first flexible circuit board through the terminal pads.

In yet another embodiment, the waterproof side key device further comprises a side key and a key core, wherein the side key is arranged in a mounting hole on the housing, one end of the side key is located in the first cavity, the other end of the side key extends out of the housing, and the side key is configured to be in contact with the first flexible circuit board through the key core.

In another embodiment, the first flexible circuit board includes an electronic switch disposed on a surface facing away from the partition wall, the side key is configured to be in contact connection with the electronic switch through the key core, and the electronic switch is disposed offset from the terminal area in an extending direction of the first flexible circuit board.

In another embodiment, the joint of the electronic switch and the first flexible circuit board is coated with waterproof glue.

In another embodiment, the housing comprises a first housing and a second housing which are fastened to each other, the partition wall is vertically arranged on a surface of the second housing facing the first housing, and one end of the partition wall close to the first housing is connected with the first housing in a sealing manner.

In another embodiment, the end of the partition wall adjacent to the first housing abuts against the first housing and is in sealing connection with the first housing.

In another embodiment, a second waterproof member is disposed between one end of the partition wall adjacent to the first housing and the first housing.

In another embodiment, the second housing includes a supporting plate vertically disposed toward a surface of the first housing, the supporting plate is disposed in parallel with the partition wall at a distance, the first flexible circuit board is sandwiched between the supporting plate and the partition wall, and the supporting plate is disposed to correspond to the wiring region of the first flexible circuit board.

In another embodiment, the electrical connector comprises a contact spring, a wire or a second flexible circuit board.

In yet another embodiment, the electrical connector includes a first end portion, a second end portion, and a connecting portion connecting the first end portion and the second end portion, the first end portion being electrically connected to the first flexible circuit board; the second end is electrically connected to the internal circuit board within the second cavity.

In yet another embodiment, the first end portion is provided with a pin, the pin of the first end portion has a width greater than a width of the connection portion, and the second end portion is provided with a pin, the pin of the second end portion has a width greater than a width of the connection portion.

In yet another embodiment, the first waterproofing member is a waterproof double-sided tape and has a width greater than or equal to 0.8mm in a surface parallel to the partition wall.

In still another embodiment, the first waterproof member is provided on a surface of the flexible circuit board near the partition wall in a region other than the terminal area.

In yet another embodiment, the second waterproof member is a waterproof double-sided tape or a waterproof foam.

According to a second aspect of the embodiments of the present disclosure, there is provided an electronic apparatus including the waterproof side key device described in any one of the above.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: through set up the through-hole on the partition wall, adopt the electric connector who runs through the through-hole to be located the first flexible circuit board in first cavity and be located the circuit board of second cavity and be linked together. The waterproof side key device cancels a bendable part on the first flexible circuit board, avoids a gap formed by the first flexible circuit board crossing the partition wall, and is beneficial to improving the waterproof performance. Meanwhile, the structure is compatible with the existing side key structure of the mobile phone, and the applicability is stronger.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a cross-sectional view illustrating a waterproof side key device according to an exemplary embodiment.

Fig. 2 is a schematic diagram illustrating one surface of a first flexible circuit board of a waterproof side key device according to an exemplary embodiment.

Fig. 3 is a schematic view of another surface of the first flexible circuit board of the waterproof side key device shown according to an exemplary embodiment.

Fig. 4 is a partial structural schematic view illustrating a waterproof side key device according to an exemplary embodiment.

Fig. 5 is a partial structural view illustrating a waterproof side key device according to still another exemplary embodiment.

Fig. 6 is a schematic structural diagram of an electronic device according to an exemplary embodiment.

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 implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Fig. 1 is a cross-sectional view illustrating a waterproof side key device according to an exemplary embodiment. Referring to fig. 1, according to an exemplary embodiment of the present disclosure, a waterproof side key apparatus includes: a housing 1; a partition wall 4, the partition wall 4 defining a first cavity CH1 and a second cavity CH2 isolated from each other within the housing 1, and the partition wall 4 including a through hole 6 communicating the first cavity CH1 and the second cavity CH 2; and a first flexible circuit board 5, the first flexible circuit board 5 being disposed on a surface of the partition wall 4 within the first cavity CH1 and being hermetically connected to the partition wall 4 at least around the through hole 6, the first flexible circuit board 5 being electrically connected with an internal circuit board such as a PCB circuit board within the second cavity CH2 through an electrical connection 10 penetrating the through hole 6.

The electrical connector 10 comprises a first end 101, a second end 102, and a connection 103 arranged and connected between the first end 101 and the second end 102. The first end 101 of the electrical connector 10 and part of the connection portion 103 are disposed within the through hole 6 so that the electrical connector 10 is electrically connected to the first flexible circuit board 5 through the first end 101, for example. The second end 102 of the electrical connector 10 and part of the connection 103 are arranged inside the second cavity CH 2.

In an exemplary embodiment, taking a mobile phone as an example, the side keys 2 of the mobile phone are mounted in mounting holes on the housing 1. The side key 2 includes a pressing end and an actuating end which are oppositely arranged. The pressing end of the side key 2 extends outwards to the outside of the shell 1, and the action end of the side key 2 is in contact connection with the first flexible circuit board 5. For example, in the case of a mobile phone, the left and right sides of the mobile phone may each be provided with a side key 2. Taking the side key 2 on the left side of the mobile phone as an example, the partition wall 4 extends along the length direction of the mobile phone. The actual size of the partition wall 4 may be designed according to the size of the first flexible circuit board 5.

The distance of the partition wall 4 from the side of the case 1 in the width direction of the mobile phone can be designed as desired. For example, the through holes 6 of the partition wall 4 may be circular holes or square holes. The actual size of the through-hole 6 may be designed according to the size of the electrical connector 10. For example, the first flexible circuit board 5 is the first flexible circuit board 5 that does not include a bendable portion. When mounted, the first flexible circuit board 5 extends entirely along the length of the mobile phone and is attached to the partition wall 4. For example, the area of the first flexible circuit board 5 in contact with the periphery of the through-hole 6 may be subjected to a sealing process. For example, the first flexible circuit board 5 may be adhered to the area around the through-hole 6 of the partition wall 4 using an adhesive member such as a waterproof double-sided tape, thereby sealing the through-hole 6. This helps prevent water from seeping through the through-holes 6 and thereby wetting the internal circuit boards or other electrical components located within the second cavity CH 2.

Fig. 2 is a schematic diagram illustrating one surface of a first flexible circuit board in a waterproof side key device according to an exemplary embodiment. Referring to fig. 2, in an exemplary embodiment, the first flexible circuit board 5 is provided with one or more electronic switches 12 on a surface remote from the partition wall 4. The electronic switch 12 is arranged to trigger different functions of the mobile phone. These functions may be, for example, turning the power of the mobile phone on or off, increasing or decreasing the volume of the mobile phone, etc. The waterproof side key device further comprises a key core 3 matched with the side key 2. The key core 3 is configured to be in contact with the electronic switch 12. In use, a user presses the side key 2, and the side key 2 triggers the electronic switch 12 to be turned on. At this time, the corresponding function circuit is turned on, and the mobile phone performs the function. For example, the number of the electronic switches 12 is equal to the number of the side keys 2. For the side key waterproof device, a waterproof plug is not required to be arranged between the key core 3 and the electronic switch 12, so that the installation is simplified, the cost is saved, the problem of reduction of the waterproof performance of the mobile phone caused by abrasion and aging due to the back-and-forth movement of the waterproof plug is avoided, and the reliability of the mobile phone is improved.

In an exemplary embodiment, the joint of the electronic switch 12 and the first flexible circuit board 5 is coated with a waterproof adhesive, which is advantageous to improve the waterproof effect.

The electronic switch 12 may be plural, for example, two or more. The specific number of electronic switches 12 may be designed as desired. In the exemplary embodiment shown in fig. 2, the first flexible circuit board 5 is provided with three electronic switches 12 on the surface facing away from the partition wall 4. These electronic switches 12 are arranged at intervals in a line on the first flexible circuit board 5. Each electronic switch 12 is in contact connection with a side key 2 having a corresponding function. When the side key 2 is pressed, the key core 3 engaged with the side key 2 triggers the electronic switch 12, so that the corresponding functional circuit is turned on. For example, the electronic switch 12 may have a reset function or the like, and each time the electronic switch 12 is pressed, adjustment of the corresponding function is performed. For example, each time the volume is increased by one depression, the electronic switch 12 is reset after performing one function adjustment. For example, a waterproof adhesive may be applied to the joint of the electronic switch 12 and the first flexible circuit board 5 by means of dispensing to prevent water from penetrating into the second cavity CH2 from a gap at the joint of the electronic switch 12 and the first flexible circuit board 5.

Fig. 3 is a schematic diagram illustrating another surface of the first flexible circuit board in a waterproof side key device according to an exemplary embodiment. Referring to fig. 3, in an exemplary embodiment, the first flexible circuit board 5 includes a terminal area 7 disposed on a surface facing the partition wall 4. The lands 7 are arranged in alignment with the through holes 6 and the first ends 101 of the electrical connectors 10 are electrically connected to the lands 7 of the first flexible circuit board 5. The second end 102 of the electrical connector 10 is electrically connected to an internal circuit board within the second cavity CH 2. For example, the terminal area 7 may be rectangular or circular. For example, the size of the land 7 may be equal to the size of the via 6. The wiring region 7 is arranged opposite to the through hole 6. For example, the peripheral area of the land 7 in contact with the through-hole 6 may be sealed with a first waterproof member 9 such as a waterproof double-sided tape, as shown in fig. 1 and 3. That is, the first waterproof member 9 may be provided on the surface of the first flexible circuit board 5 on which the wiring region 7 is provided, and does not cover the wiring region 7. By doing so, the electrical connector 10 may electrically connect the first flexible circuit board 5 and the internal circuit boards respectively located at both sides of the through hole 6, that is, electrically connect the first flexible circuit board 5 and the internal circuit boards respectively located in the first cavity CH1 and the second cavity CH2, through the through hole 6. This prevents the first flexible circuit board 5 from forming a gap by crossing the partition wall 4, which is advantageous for improving the waterproof effect.

In the exemplary embodiment, the termination region 7 has a plurality of terminal pads 8, and the electrical connector 10 is electrically connected to the first flexible circuit board 5 through the terminal pads 8. For example, in the exemplary embodiment shown in fig. 3, the terminal area 7 is provided with four terminal pads 8. The four connection pads 8 may correspond to four different functional circuits for turning on the power of the mobile phone, turning off the power, increasing the volume, and decreasing the volume, respectively. For example, three or five terminal pads 8 may be provided in the terminal area 7 as necessary. For example, when the wiring region 7 is rectangular, four wiring pads 8 may be arranged in a line and at equal intervals.

In an exemplary embodiment, the waterproof side key device 16 further includes a side key 2 disposed in the mounting hole of the housing 1, one end of the side key 2 is located in the first cavity CH1 and contacts the first flexible circuit board 5, and the other end of the side key 2 extends out of the housing 1.

In the extending direction of the first flexible circuit board 5, the electronic switch 12 and the wiring region 7 can be arranged in a staggered manner, and the two do not interfere with each other.

The waterproof side key device provided by the embodiment of the disclosure cancels a bendable part on the first flexible circuit board 5, avoids a gap formed by the first flexible circuit board 5 when the first flexible circuit board crosses over the retaining wall, and is beneficial to improving the waterproof performance. Meanwhile, the first flexible circuit board 5 without the bendable part has low requirements on industrial design and space layout, can be compatible with the existing structure of the mobile phone side key 2, and has stronger applicability. In addition, the first flexible circuit board 5 with the bendable portion eliminated is beneficial to reducing the production cost and is convenient to assemble.

In the exemplary embodiment, a first flashing member 9 is further included, which is arranged between the edge of the termination area 7 and the partition wall 4, the effective width of the first flashing member 9 being greater than or equal to 0.8 mm. For example, the first waterproof member 9 may adhere the first flexible circuit board 5 to the partition wall 4, and the adhering region of the waterproof double-sided tape may match the shapes of the through hole 6 and the wiring region 7, for example, when the through hole 6 and the wiring region 7 are both circular, the adhering region is circular. For example, when the through hole 6 and the land 7 are both square, the paste area is square. For example, the effective width of the first waterproof member 9 may be 0.8mm or 1 mm. The effective width can be adjusted according to the waterproof rating. The higher the water resistance rating, the greater the effective width. For example, the effective width may be understood as the width of the actual adhesion area of the first flexible circuit board 5 to the partition wall 4 in a plane parallel to the surface of the partition wall 4. For example, in order to improve the waterproof grade, the first waterproof member 9 may cover an area of the surface of the first flexible circuit board 5 other than the wire connection region 7.

In the exemplary embodiment, the housing 1 includes a first housing 1A and a second housing 1B that are snap-fitted to each other. The partition wall 4 is vertically provided on a surface of the second casing 1B facing the first casing 1A. One end of the partition wall 4 close to the first casing 1A is hermetically connected to the first casing 1A. When the electronic apparatus of the present disclosure is a mobile phone, the first casing 1A may be a battery rear cover of the mobile phone, and the second casing 1B may be a middle frame of the mobile phone. For example, the position of the side key 2 mounting hole may be provided on the surface of the first casing 1A, the surface of the second casing 1B, or the connection between the first casing 1A and the second casing 1B. The selection of the specific position can be selected according to actual needs.

In the exemplary embodiment, a second waterproof member 11, such as a waterproof double-sided tape or waterproof foam, is provided between one end of the partition wall 4 near the first casing 1A and the first casing 1A. Since there is no need to install the bent portion of the first flexible circuit board 5 at the joint of the partition wall 4 and the first housing 1A, providing the second waterproof member 11 at the joint is advantageous in improving the waterproof effect. For example, the joint of the partition wall 4 and the first casing 1A may be sealed with a waterproof double-sided tape.

In the exemplary embodiment, the partition wall 4 abuts against the first housing 1A near one end of the first housing 1A, and is sealingly connected to the first housing 1A. Due to the influence of the manufacturing process and the installation accuracy, there may be a gap between the top surface of the partition wall 4 and the first housing 1A, and a second waterproof member 11 such as waterproof foam or waterproof double-sided tape is disposed at the gap to block the gap, so that even if water enters through the installation hole of the side key 2 on the housing 1, the water does not penetrate into the second cavity CH2 to affect the internal circuit board or other electrical components in the second cavity CH 2.

Fig. 4 is a partial structural view illustrating a waterproof side key device according to an exemplary embodiment, and referring to fig. 4, in an exemplary embodiment, the electrical connector 10 may include a contact dome, a wire, or a second flexible circuit board. The electrical connector 10 penetrates through the through hole 6, a first end 101 of the electrical connector 10 is connected with the wiring pad 8, and a second end 102 is electrically connected with the circuit board. For example, for the connection of the terminal areas 7 on the first flexible circuit board 5 with the internal circuit board, an electrically conductive electrical connection 10 can be used for the connection. For example, the electrical connection 10 may be a flexible electrical connection or a rigid electrical connection, the main function of which is to place the first flexible circuit board 5 in communication with the internal circuit board.

In an exemplary embodiment, the electrical connector 10 may be a contact dome. For example, each of the first end 101 and the second end 102 of the electrical connector 10 may be provided with a plurality of pins, and the width of each of the pins of the first end 101 and the pins of the second end 102 may be greater than the width of the connecting portion 103 for facilitating the connection. Meanwhile, the number of pins of the first end portion 101 matches the number of the wire bonding pads 8 so that each circuit connected to the wire bonding pads 8 corresponds to an independent function. For example, the connection portion 103 of the electrical connector 10 may be soldered on the inner wall of the bottom of the through-hole 6, and the pin of the first end portion 101 may be in interference contact with the terminal pad 8, or may be soldered on the terminal pad 8. For example, for the lead, it is possible to connect to the terminal pad 8 and the internal circuit board by soldering. For example, for the second flexible circuit board, an anisotropic glue may be used for adhesive connection with the terminal areas 7. In an exemplary embodiment, the contact dome may be designed to be provided with contact structures at both ends.

In the exemplary embodiment, the wall surface of the partition wall 4 is perpendicular to the pressing direction of the side key 2. With this arrangement, it is advantageous to improve the response accuracy when the side key 2 is pressed, and it is possible to avoid a reduction in the accuracy of the operation due to the deviation of the point of application.

Fig. 5 is a partial structural view illustrating a waterproof side key device according to still another exemplary embodiment. Referring to fig. 5, in the exemplary embodiment, a support plate 14 is provided on the second housing 1B at an edge near the side key 2. The support plates 14 are disposed in parallel with a space between the partition walls 4. The first flexible circuit board 5 is sandwiched between the support plate 14 and the partition wall 4. The support plate 14 is arranged to correspond to the terminal area 7 of the first flexible circuit board 5, i.e. the support plate 14 may be arranged in alignment with the terminal area 7 and the support plate 14 may be arranged in a staggered arrangement with respect to the electronic switch 12. For example, when the first flexible circuit board 5 is connected to the internal circuit board by using a contact spring, the contact spring may push the first flexible circuit board 5 away from the partition wall 4, resulting in a sealing failure. For another example, as the usage time increases, the first waterproof member 9 may age and fail, so that the first flexible circuit board 5 falls off the partition wall 4. Therefore, the support plate 14 is disposed on the second casing 1B, and the support plate 14 is connected to the surface of the first flexible circuit board 5 opposite to the partition wall 4 in an abutting manner, and supports and fixes the first flexible circuit board 5. This is advantageous in improving the reliability of the waterproof side key device 16. For example, the support plate 14 may have any suitable shape, such as a rectangular shape. For example, the supporting plate 14 may be arranged in plural, the plural supporting plates 14 are in the same line, and a gap is reserved between two adjacent supporting plates 14, so that the key core 3 can press the electronic switch 12.

Fig. 6 is a schematic structural diagram of an electronic device according to an exemplary embodiment. Referring to fig. 6, according to a second aspect of the embodiments of the present disclosure, there is provided an electronic apparatus 15 including a waterproof side key device 16. The waterproof side key device 16 may be the waterproof side key device described in any of the above embodiments. The electronic device 15 includes, for example, various mobile terminals. For example, the mobile terminal may be a mobile phone, a tablet, a personal digital assistant, and the like.

It is understood that "a plurality" in this disclosure means two or more, and other words are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.

It will be further understood that the terms "central," "longitudinal," "lateral," "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present embodiment and to simplify the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation.

It will be further understood that, unless otherwise specified, "connected" includes direct connections between the two without the presence of other elements, as well as indirect connections between the two with the presence of other elements.

It is further to be understood that while operations are depicted in the drawings in a particular order, this is not to be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (18)

1. A waterproof side key device characterized by comprising:

a shell body, a plurality of first connecting rods and a plurality of second connecting rods,

a partition wall defining a first cavity and a second cavity isolated from each other within the housing, and including a through hole communicating the first cavity and the second cavity; and

a first flexible circuit board disposed on a surface of the partition wall within the first cavity and hermetically connected to the partition wall at least around the through hole, the first flexible circuit board being electrically connected with an internal circuit board located within the second cavity through an electrical connection penetrating the through hole.

2. The waterproof side key device according to claim 1,

the flexible circuit board is connected to the partition wall in a sealing mode through the first waterproof component.

3. The waterproof side key device according to claim 2,

the first flexible circuit board is provided with a wiring area towards the surface of the isolation wall, the wiring area is aligned with the through hole, one end of the electric connecting piece is electrically connected with the wiring area, and the other end of the electric connecting piece is electrically connected with the internal circuit board.

4. The waterproof side key device according to claim 3,

the first flexible circuit board includes a plurality of terminal pads provided at the terminal area, and the electric connector is electrically connected to the first flexible circuit board through the terminal pads.

5. The waterproof side key device according to claim 3,

also comprises a side key and a key core,

wherein the side key is disposed in a mounting hole on the housing, one end is located in the first cavity and the other end protrudes out of the housing, and the side key is configured to contact the first flexible circuit board through the key core.

6. The waterproof side key device according to claim 5,

the first flexible circuit board comprises an electronic switch arranged on the surface back to the isolation wall, the side key is configured to be in contact connection with the electronic switch through the key core, and the electronic switch and the wiring region are arranged in a staggered mode in the extending direction of the first flexible circuit board.

7. The waterproof side key device according to claim 6,

the joint of the electronic switch and the first flexible circuit board is coated with waterproof glue.

8. The waterproof side key device according to claim 6,

the shell comprises a first shell and a second shell which are buckled with each other, and the isolation wall is vertically arranged on the surface of the second shell facing the first shell.

9. The waterproof side key device according to claim 8,

one end of the isolation wall close to the first shell props against the first shell and is connected with the first shell in a sealing mode.

10. The waterproof side key device according to claim 8,

and a second waterproof part is arranged between one end of the separation wall close to the first shell and the first shell.

11. The waterproof side key device according to claim 8,

the second housing includes a support plate vertically disposed toward a surface of the first housing,

the supporting plate and the separating wall are arranged in parallel at intervals,

the first flexible circuit board is clamped between the support plate and the isolation wall,

the support plate is disposed to correspond to the wiring region of the first flexible circuit board.

12. The waterproof side key device according to claim 1,

the electric connector comprises a contact spring sheet, a lead or a second flexible circuit board.

13. The waterproof side key device according to claim 12,

the electric connector comprises a first end part, a second end part and a connecting part for connecting the first end part and the second end part,

the first end portion is electrically connected with the first flexible circuit board;

the second end is electrically connected to the internal circuit board within the second cavity.

14. The waterproof side key device according to claim 13,

the first end portion is provided with a pin, the width of the pin of the first end portion is greater than that of the connecting portion, and

the second end portion is provided with a pin, and the width of the pin of the second end portion is larger than that of the connecting portion.

15. The waterproof side key device according to claim 2,

the first waterproof member is a waterproof double-sided tape and has a width of 0.8mm or more in a surface parallel to the partition wall.

16. The waterproof side key device according to claim 3,

the first waterproof component is arranged on the surface of the flexible circuit board close to the separation wall in a region except the wiring region.

17. The waterproof side key device according to claim 10,

the second waterproof component is waterproof double faced adhesive tape or waterproof foam.

18. An electronic apparatus characterized by comprising the waterproof side key device according to any one of claims 1 to 17.

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