CN114070914A - Mobile terminal and middle frame - Google Patents
Mobile terminal and middle frame Download PDFInfo
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- CN114070914A CN114070914A CN202010792892.9A CN202010792892A CN114070914A CN 114070914 A CN114070914 A CN 114070914A CN 202010792892 A CN202010792892 A CN 202010792892A CN 114070914 A CN114070914 A CN 114070914A
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- middle frame
- mobile terminal
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- key
- side key
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- 238000010276 construction Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 72
- 239000010410 layer Substances 0.000 claims description 58
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 17
- 239000012790 adhesive layer Substances 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 9
- 239000006260 foam Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 19
- 238000005452 bending Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 239000000428 dust Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0277—Details of the structure or mounting of specific components for a printed circuit board assembly
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The disclosure relates to a mobile terminal and a middle frame, wherein the mobile terminal comprises the middle frame, and a side key circuit board which are arranged on the middle frame; the side key circuit board comprises a key connecting part, a main board connecting part and a lead, wherein the lead is used for connecting the key connecting part and the main board connecting part; the middle frame is provided with a through hole structure, the through hole structure comprises a through hole, the through hole penetrates through the middle frame, the mainboard connecting part is positioned on the back of the middle frame, the lead passes through the through hole structure, the second end of the lead is connected with the key connecting part, the first end of the lead is connected with the mainboard connecting part, and the back of the middle frame is one side close to a rear cover of the mobile terminal; the center includes the side keyway, and the button connecting portion are located the side keyway, and the terminal surface of side keyway is identical with the inside device that corresponds position department of mobile terminal, forms waterproof construction. The mobile terminal can realize higher waterproof performance through lower cost.
Description
Technical Field
The present disclosure relates to the field of mobile terminal technologies, and in particular, to a mobile terminal and a middle frame.
Background
With the continuous progress of science and technology, mobile terminals such as mobile phones are not only a communication tool, but also an entertainment tool and an office tool, so that people have stronger dependence on the mobile phones, and more scenes exist in which the mobile terminals such as the mobile phones are used in life.
In order to adapt to the complexity of a use scene and avoid the influence of various factors in the external environment on the mobile phone, higher requirements are put forward on the waterproof and dustproof performance of the mobile phone.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a mobile terminal and a middle frame.
According to a first aspect of the embodiments of the present disclosure, there is provided a mobile terminal, including:
the middle frame, and a side key circuit board which are arranged on the middle frame;
the side key circuit board comprises a key connecting part, a main board connecting part and a lead, wherein the lead is used for connecting the key connecting part and the main board connecting part;
the middle frame is provided with a through hole structure, the through hole structure comprises a through hole, the through hole penetrates through the middle frame, the mainboard connecting part is positioned on the back surface of the middle frame, the lead wire penetrates through the through hole structure, the second end of the lead wire is connected with the key connecting part, the first end of the lead wire is connected with the mainboard connecting part, and the back surface of the middle frame is one side close to a rear cover of the mobile terminal;
the middle frame comprises a side key groove, the key connecting portion is located in the side key groove, the end face of the side key groove is matched with a device at a corresponding position inside the mobile terminal, and a waterproof structure is formed.
Optionally, the through hole structure includes a first through hole and a routing area, one notch of the side key slot faces the front surface of the middle frame, and the lead passes through the first through hole and is matched with the routing area.
Optionally, the mobile terminal includes a sealing layer covering the through hole structure, and the side key slot is a notch on a front surface of the middle frame.
Optionally, the through hole structure includes a first through hole, a routing area, and a second through hole, one notch of the side key slot faces the back of the middle frame, and the lead passes through the first through hole and the second through hole.
Optionally, a key switch is arranged on the key connecting portion, and the key switch is matched with the side key.
Optionally, a sealing layer is disposed at the through hole structure, and the sealing layer is disposed on the front surface of the middle frame.
Optionally, the front surface of the middle frame is provided with a mounting groove formed at the circumferential edge of the through hole structure, and the mounting groove is used for mounting the sealing layer.
Optionally, the plane of the mounting groove is flush with a portion of the routing area facing the front surface of the middle frame.
Optionally, the sealing layer is bonded and connected with the middle frame in a foam adhesive and/or dispensing manner.
Optionally, the sealing layer comprises a waterproof cover sheet.
Optionally, a surface of the sealing layer is flush with a surface of the middle frame.
Optionally, the plane of the routing area is lower than the surface of the middle frame.
Optionally, the mobile terminal further comprises a waterproof soft adhesive layer, the waterproof soft adhesive layer is connected with the end face of the side key groove in an adhesive mode, and the waterproof soft adhesive layer covers the side key groove to form the waterproof structure.
Optionally, the middle frame further comprises a key mounting structure and a mounting through hole, the key mounting structure is used for mounting the side key of the mobile terminal, the mounting through hole is communicated with the key mounting structure and the side key groove, the mounting through hole is used for mounting the side key, and the side key is electrically connected with the key connecting portion.
According to a second aspect of the embodiment of the present disclosure, a middle frame is provided and applied to a mobile terminal, the middle frame is provided with a through hole structure, the through hole structure comprises a through hole, the through hole runs through the middle frame, the middle frame further comprises a side key groove, the side key groove is used for installing a key connection portion of a side key circuit board, the end face of the side key groove is matched with a device at a position corresponding to the inside of the mobile terminal, and a waterproof structure is formed.
Optionally, the through hole structure includes a first through hole and a routing area, a notch of the side key slot faces the front surface of the middle frame, and the routing area and the first through hole are used for routing a lead of the side key circuit board.
Optionally, the through hole structure includes a first through hole, a routing area and a second through hole, and one notch of the side key slot faces to the back surface of the middle frame.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: in this mobile terminal, the lead wire runs through the center setting for the partial structure of lead wire arranges in the front of center, and then can guarantee that the terminal surface of side keyway is identical with the inside device that corresponds position department of mobile terminal, forms waterproof construction, and this waterproof construction can play better water-proof effects, in order to realize higher waterproof performance through lower cost, for example satisfy the waterproof dustproof requirement of IP 68.
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 invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a rear view schematically showing a side key mounting structure according to the related art.
Fig. 2 is a schematic view of a flexible circuit board according to a side key mounting structure in the related art.
Fig. 3 is a schematic diagram illustrating a middle box of a mobile terminal according to an example embodiment.
Fig. 4 is a front schematic view of a middle frame of a mobile terminal (including a flexible circuit board) shown according to an example embodiment.
Fig. 5 is a front schematic view of a middle frame of a mobile terminal shown according to an exemplary embodiment (without a flexible circuit board).
FIG. 6 is a rear schematic view of a side key mounting structure shown in accordance with an exemplary embodiment.
FIG. 7 is a front schematic view of a side key mounting structure shown in accordance with an exemplary embodiment.
Fig. 8 is a schematic diagram of a middle frame of a mobile terminal (including a flexible circuit board) shown according to an example embodiment.
Fig. 9 is a schematic diagram of a middle frame of a mobile terminal (including a flexible circuit board) shown according to an example embodiment.
Fig. 10 is a schematic diagram of a middle frame of a mobile terminal (not including a flexible circuit board) shown according to an exemplary embodiment.
FIG. 11 is a front schematic view of a side key mounting structure shown in accordance with an exemplary embodiment.
Fig. 12 is a schematic diagram of a flexible circuit board shown in accordance with an example 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 embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
In order to ensure the aesthetic appearance of a mobile terminal (such as a mobile phone) and facilitate operation, part of the function keys of the mobile terminal are installed on the side wall of the housing of the mobile terminal, such as a power-on/off key, a volume adjusting key and the like. The mobile terminal comprises a side key and a side key, wherein a flexible circuit board (FPC board) is arranged inside the mobile terminal, an electric control element corresponding to a function key on a side wall is arranged on the flexible circuit board, the side key of the mobile terminal is matched with the electric control element on the flexible circuit board, and when a user presses the side key, the side key triggers the electric control element corresponding to the side key so as to realize corresponding functions. In order to effectively fix the flexible circuit board, the flexible circuit board is mounted on a middle frame of the mobile terminal.
In the related art, the outgoing line of the flexible circuit board penetrates out from the back of the middle frame (the back is close to one side of the rear cover of the mobile terminal), and other parts, such as a battery, a main board and the like, are further mounted in the space of the back, so that the space of the back of the middle frame is small, and a reliable sealing structure, such as a waterproof structure, is difficult to design, so that the mobile terminal of a mobile phone cannot realize common life water resistance.
Referring to fig. 1 and 2, in the related art, the entire structure of the side key circuit board 2 ' is located on the back surface of the middle frame 1 ', the side key circuit board 2 ' includes a main board connection portion 21 ', a lead 22 ' and a key connection portion 23 ', and the waterproof structure 6 ' can only waterproof-seal the key connection portion 23 ' of the side key circuit board 2 '. Because the space of the back of the middle frame 1 ' is limited, the lead 22 ' of the side key circuit board 2 ' is wound from the back of the middle frame 1 ', namely, the lead 22 ' of the side key circuit board 2 ' is arranged on the back of the middle frame 1 ', even if the waterproof structure 6 ' is installed, because the lead 22 ' needs to be routed from the lower part of the waterproof structure 6 ', a gap exists between the waterproof structure 6 ' and the middle frame 1 ', a complete sealing surface cannot be formed, and most of the structure of the lead 22 ' is completely exposed out of the sealing surface. Such a structure may cause liquid, gas or dust in the external environment to enter the inside of the mobile terminal through a gap between the side key 3 'of the mobile terminal and the housing (not shown in the figure), and enter the main board mounting position of the mobile terminal through the position of the lead 22' where complete sealing cannot be achieved, so that the basic life dustproof and waterproof IP53 grade cannot be achieved.
In the related art, for the mobile terminal using the above structure, to achieve the waterproof effect of the IP68 grade, only professional waterproof designs such as liquid silicone injection molding can be adopted, so that the production cost of the mobile terminal using the above structure is high, and the mobile terminal is not suitable for popularization and use.
The present disclosure provides a mobile terminal, which is an electronic device such as a mobile phone, a tablet computer, a notebook computer, etc. Referring to fig. 3-7 or fig. 8-11, the mobile terminal includes a middle frame 1, and a side key 3 and a side key circuit board 2 mounted on the middle frame 1, the side key circuit board 2 including a key connecting portion 23, a main board connecting portion 21, and a lead 22, wherein the key connecting portion 23 is mated with the side key 3, the main board connecting portion 21 is mated with a main board of the mobile terminal, and the lead 22 is used for connecting the key connecting portion 23 and the main board connecting portion 21. The middle frame 1 is provided with through-hole structure 11, and through-hole structure 11 includes the through-hole, and the through-hole runs through middle frame 1, and mainboard connecting portion 21 is located the back of middle frame 1, and the back of middle frame 1 is for being close to one side of mobile terminal, and lead wire 22 passes through-hole structure 11, and the second end of lead wire 22 links to each other with key connecting portion 23, and the first end of lead wire 22 links to each other with mainboard connecting portion 21. The middle frame 1 comprises a side key groove 12, the key connecting part 23 is positioned in the side key groove 12, and the end face of the side key groove 12 is matched with a device at a corresponding position in the mobile terminal to form a waterproof structure 6.
In this mobile terminal, lead wire 22 runs through center 1 and sets up for lead wire 22's partial structure arranges in center 1's front, and then can guarantee that the terminal surface of side keyway 12 is identical with the inside device that corresponds position department of mobile terminal, forms waterproof construction 6, and this waterproof construction 6 can play better water-proof effects, in order to realize higher waterproof performance through lower cost, for example satisfy the waterproof dustproof requirement of IP 68.
In an exemplary embodiment, a mobile terminal is provided, which is shown with reference to fig. 8 to 11, and includes the structure of the mobile terminal described above, and in the mobile terminal, the via structure 11 includes a first via 111 and a trace area 112, one notch of the side key slot 12 faces the front surface of the middle frame 1, and the lead 22 passes through the first via 111 and mates with the trace area 112.
It should be noted that the side key grooves 12 include other notches for accommodating the side keys 3 in addition to the above-described notch facing the front surface of the center frame 1.
In one embodiment, the key connection portion 23 is first installed in the side key groove 12, and then the main board connection portion 21 is passed through the first through hole 111, so that the main board connection portion 21 is disposed on the back surface of the middle frame 1, one opening of the side key groove 12 faces the front surface of the middle frame 1, and at the same time, a partial structure of the lead 22 is disposed on the routing area 112, and the lead 22 passes through the first through hole 111.
In the mobile terminal, the main board connecting portion 21 is disposed on the back of the middle frame 1, wherein the back of the middle frame 1 is the opposite of the front of the middle frame 1, and one opening of the side key groove 12 faces the front of the middle frame 1, that is, the back of the position on the middle frame 1 for installing the key connecting portion 23 is a complete sealing surface, and the sealing surface directly forms the waterproof structure 6, without disposing other waterproof structures 6, which can reduce the cost and improve the waterproof effect of the mobile terminal. In addition, the wiring area 112 for installing the lead 22 is also located on the front surface of the middle frame 1, which provides convenience for installing the lead 22 and the sealing structure of the key connection part 23, and facilitates the setting of the waterproof setting of the lead 22 and the key connection part 23, so as to realize higher waterproof performance with lower cost.
In one embodiment, the sealing layer 4 is disposed at the through hole structure 11, the sealing layer 4 is disposed at the front surface of the middle frame 1, the sealing layer 4 covers the through hole structure 11 and the notch of the side key groove 12 facing the front surface of the middle frame 1, and the sealing layer 4 is used for sealing the first through hole 111, the trace area 112 and the side key groove 12 to prevent dust or liquid from entering the back surface of the middle frame 1 through the first through hole 111, the trace area 112 and the side key groove 12 and the like. In addition, the sealing layer 4 is arranged on the front surface of the middle frame 1, so that the arrangement of the sealing layer 4 is more convenient, the sealing layer 4 is matched with the waterproof structure 6, the waterproof performance of the mobile terminal can be better improved, and the mobile terminal can achieve a higher waterproof grade at lower cost.
In one embodiment, on the front surface of the middle frame 1, the middle frame 1 is formed with a mounting groove 13 along the circumferential edge of the through hole structure 11, the mounting groove 13 is used for mounting the sealing layer 4, the surface of the sealing layer 4 is flush with the surface of the middle frame 1, and the plane of the mounting groove 13 is flush with the part of the routing area 112 facing the front surface of the middle frame, so that good sealing and waterproof effects can be ensured, the flatness of the whole structure formed by the middle frame 1 and the sealing layer 4 can be ensured, and the mounting and the arrangement of other structures of the mobile terminal are facilitated. For example, the sealing layer 4 includes a waterproof cover plate, which can be bonded to the mounting groove 13 by foam and/or glue dispensing to ensure the sealing effect of the lead 22 at a low cost. Because the back of the side key groove 12 directly forms the sealed waterproof structure 6, the lead 22 can be sealed only by arranging the waterproof cover plate on the front of the middle frame 1, and a high waterproof effect can be achieved.
In an exemplary embodiment, a mobile terminal is provided, which is different from the above-mentioned mobile terminal in that in the mobile terminal, as shown with reference to fig. 3 to 7, the through hole structure 11 includes a first through hole 111, a routing area 112, and a second through hole 113, one notch of the side key groove 12 faces the back surface of the middle frame 1, the first end of the lead 22 passes out from the back surface of the middle frame 1 to the front surface of the middle frame 1 through the second through hole 113, and then passes through the routing area 112 and the first through hole 111 again to the back surface of the middle frame 1, wherein the back surface is a side close to the back cover of the mobile terminal.
It should be noted that the side key grooves 12 include other notches for accommodating the side keys 3 in addition to the above-described notch facing the back surface of the center frame 1.
In one embodiment, the key connecting portion 23 is first installed in the side key slot 12, and then the main board connecting portion 21 sequentially passes through the second through hole 113 and the first through hole 111, so that the main board connecting portion 21 and the key connecting portion 23 are both disposed on the back surface of the middle frame 1, meanwhile, the lead 22 passes through the first through hole 111 and the second through hole 113, and a partial structure of the lead 22 is disposed in the routing area 112.
In this mobile terminal, mainboard connecting portion 21 and key connecting portion 23 all are located the back of center 1, but lead wire 22 passes the connection that realizes mainboard connecting portion 21 and key connecting portion 23 by the front of center 1, and then can guarantee that the terminal surface of side keyway 12 is identical with the inside device that corresponds position department of mobile terminal, forms waterproof construction 6, and this waterproof construction 6 can play better water-proof effects to realize higher waterproof performance through lower cost.
In one embodiment, the sealing layer 4 is disposed at the through hole structure 11, and the sealing layer 4 is disposed at the front surface of the middle frame 1 for sealing the first through hole 111, the trace area 112 and the second through hole 113 to prevent dust or liquid from entering the back surface of the middle frame 1 through the first through hole 111, the trace area 112 and the second through hole 113. In addition, the sealing layer 4 is arranged on the front surface of the middle frame 1, so that the arrangement of the sealing layer 4 is more convenient, the sealing layer 4 is matched with the waterproof structure 6, the waterproof performance of the mobile terminal can be better improved, and the mobile terminal can achieve a higher waterproof grade at lower cost.
In one embodiment, a mounting groove 13 is formed in the front surface of the through hole structure 11 along the circumferential edge of the through hole structure 11 of the middle frame 1, the mounting groove 13 is used for mounting the sealing layer 4, the surface of the sealing layer 4 is flush with the surface of the middle frame 1, and the plane of the mounting groove 13 is flush with the part of the routing area 112 facing the front surface of the middle frame, so that good sealing and waterproof effects can be ensured, the smoothness of the whole structure formed by the middle frame 1 and the sealing layer 4 can be ensured, and the mounting and the arrangement of other structures of the mobile terminal are facilitated. For example, the sealing layer 4 includes a waterproof cover plate, which can be bonded to the mounting groove 13 by foam and/or glue dispensing to ensure the sealing effect of the lead 22 at a low cost. Because the back of the side key groove 12 directly forms the sealed waterproof structure 6, the lead 22 can be sealed only by arranging the waterproof cover plate on the front of the middle frame 1, and a high waterproof effect can be achieved.
In one embodiment, the mobile terminal includes a waterproof soft adhesive layer, the waterproof soft adhesive layer is adhesively connected with the end surface of the side key groove 12, the waterproof soft adhesive layer covers the side key groove 12 to form the waterproof structure 6, and the notch of the side key groove 12 is sealed by the waterproof soft adhesive layer, so as to prevent dust or liquid from entering the back surface of the middle frame 1 through the notch of the side key groove 12. The waterproof glue layer is matched with the waterproof cover plate, so that a higher waterproof grade is achieved at lower cost.
In an exemplary embodiment, a mobile terminal is provided, which is shown in reference to fig. 3-7 or 8-11, and comprises the structure of any one of the mobile terminals, and in the mobile terminal, the middle frame 1 further comprises a key mounting structure and a mounting through hole 5, the key mounting structure is used for mounting the side key 3 of the mobile terminal, the mounting through hole 5 is used for mounting the side key 3, and the side key 3 is electrically connected with the key connecting portion 23. The key connection portion 23 is provided with a key switch (not shown in the figure), and the key switch is matched with the side key 3 to realize the corresponding function of the side key 3.
In the mobile terminal, when the side key 3 is pressed, a signal corresponding to the pressing action is transmitted to the key connecting portion 23, and the key connecting portion 23 transmits the signal to the main board connecting portion 21 through the lead 22 and transmits the signal to the main board through the main board connecting portion 21, so as to realize a corresponding function.
In an exemplary embodiment, a mobile terminal is provided, which includes the structure of any of the above mobile terminals, and in the mobile terminal, as shown in fig. 12, the main board connection portion 21, the lead 22 and the key connection portion 23 are integrally designed, and accordingly, the through hole structure 11 may pass through the main board connection portion 21. When the side key circuit board 2 is installed, the key connecting portion 23 is installed in the side key groove 12, and then the main board connecting portion 21 penetrates through the through hole structure 11 and is fixed to the back surface of the middle frame 1, that is, the lead 22 penetrates through the through hole structure 11, the second end of the lead 22 is connected with the key connecting portion 23, the first end is connected with the main board connecting portion 21, and the installation of the side key circuit board 2 is completed.
In one embodiment, the side key circuit board 2 is a flexible circuit board, which is mounted on the middle frame of the mobile terminal and cooperates with the side keys of the mobile terminal to implement corresponding functions. Specifically, the lead 22 includes a first bending portion 221 and a second bending portion 222, the first bending portion 221 is disposed on the front surface of the middle frame 1, the first bending portion 221 is used for connecting the key connection portion 23 and the second bending portion 222, and one end of the second bending portion 222 away from the first bending portion 221 is connected to the main board connection portion 21. This flexible circuit board realizes the cooperation with the center through setting up first kink 221 and second kink 222, and then realizes the installation of flexible circuit board through the front threading at the center, is convenient for reach better water-proof effects with lower cost.
In one embodiment, the first bending portion 221 and the second bending portion 222 form an included angle of 90 °, and the included angle can be adaptively adjusted according to the actual structure of the middle frame 1, so as to facilitate the wiring.
The present disclosure also provides a middle frame, as shown in fig. 3-7 or 8-11, the middle frame 1 is provided with a through hole structure 11, the through hole structure 11 includes a through hole, the through hole penetrates through the middle frame 1, the main board connecting portion 21 is located on the back of the middle frame 1, the back of the middle frame 1 is a side close to the mobile terminal, the lead 22 penetrates through the through hole structure 11, the second end of the lead 22 is connected with the key connecting portion 23, and the first end of the lead 22 is connected with the main board connecting portion 21. The middle frame 1 comprises a side key groove 12, the key connecting part 23 is positioned in the side key groove 12, and the end face of the side key groove 12 is matched with a device at a corresponding position in the mobile terminal to form a waterproof structure 6.
This center 1 can realize that the partial structure of lead wire 22 arranges in center 1's front, and then can guarantee that the terminal surface of side keyway 12 is identical with the inside device that corresponds position department of mobile terminal, forms waterproof construction 6, and this waterproof construction 6 can play better water-proof effects to realize higher waterproof performance through lower cost, for example satisfy the waterproof dustproof requirement of IP 68.
In an exemplary embodiment, there is provided a middle frame including the structure of the middle frame described above, and in the middle frame, as shown with reference to fig. 8 to 11, the through hole structure 11 includes a first through hole 111 and a trace region 112, one notch of the side key groove 12 faces the front surface of the middle frame 1, and the lead 22 at the main board connection portion 21 passes through the first through hole 111 and mates with the trace region 112.
It should be noted that the side key grooves 12 include other notches for accommodating the side keys 3 in addition to the above-described notch facing the front surface of the center frame 1.
In one embodiment, the key connection portion 23 is first installed in the side key groove 12, and then the main board connection portion 21 is passed through the first through hole 111, so that the main board connection portion 21 is disposed on the back surface of the middle frame 1, one opening of the side key groove 12 faces the front surface of the middle frame 1, and at the same time, a partial structure of the lead 22 is disposed on the routing area 112, and the lead 22 passes through the first through hole 111.
The middle frame 1 can realize that the main board connecting part 21 is arranged on the back surface of the middle frame 1, wherein the back surface of the middle frame 1 is the opposite surface of the front surface of the middle frame 1, one opening of the side key groove 12 faces the front surface of the middle frame 1, namely, the back surface of the position, used for installing the key connecting part 23, on the middle frame 1 is a complete sealing surface, and the sealing surface directly forms the waterproof structure 6 without arranging other waterproof structures 6, so that the cost can be reduced, and the waterproof effect of the middle frame can be improved. In addition, the wiring area 112 for installing the lead 22 is also located on the front surface of the middle frame 1, which provides convenience for installing the lead 22 and the sealing structure of the key connection part 23, and facilitates the setting of the waterproof setting of the lead 22 and the key connection part 23, so as to realize higher waterproof performance with lower cost.
In one embodiment, based on the structure of the middle frame 1, the sealing layer 4 is disposed at the through hole structure 11, the sealing layer 4 is disposed at the front surface of the middle frame 1, the sealing layer 4 covers the through hole structure 11 and the notch of the side key groove 12 facing the front surface of the middle frame 1, and the sealing layer 4 is used for sealing the first through hole 111, the trace area 112 and the side key groove 12 to prevent dust or liquid from entering the back surface of the middle frame 1 through the first through hole 111, the trace area 112 and the side key groove 12 and the like.
In addition, just because of the above structural design of the middle frame 1, the sealing layer 4 can be arranged on the front surface of the middle frame 1, so that the arrangement of the sealing layer 4 is more convenient, the sealing layer 4 is matched with the waterproof structure 6, the waterproof performance of the mobile terminal provided with the middle frame 1 can be better improved, and the realization of achieving a higher waterproof grade with lower cost is more convenient.
In one embodiment, on the front surface of the middle frame 1, the middle frame 1 is formed with a mounting groove 13 along the circumferential edge of the through hole structure 11, the mounting groove 13 is used for mounting the sealing layer 4, the plane of the mounting groove 13 is flush with the portion of the routing area 112 facing the front surface of the middle frame, which not only can ensure good sealing and waterproof effects, but also can ensure the smoothness of the whole structure formed by the middle frame 1 and the sealing layer 4, and facilitates the installation and arrangement of other structures of the mobile terminal. Because the back of the side key groove 12 directly forms the sealed waterproof structure 6, the lead 22 can be sealed only by arranging the waterproof cover plate on the front of the middle frame 1, and a high waterproof effect can be achieved.
In an exemplary embodiment, there is provided a middle frame, which is different from the above-mentioned middle frame in that, in the middle frame, as shown with reference to fig. 3 to 7, the through hole structure 11 includes a first through hole 111, a routing area 112, and a second through hole 113, one notch of the side key groove 12 faces the back surface of the middle frame 1, the first end of the lead wire 22 passes out from the back surface of the middle frame 1 to the front surface of the middle frame 1 through the second through hole 113, and then passes through the routing area 112 and the first through hole 111 again to the back surface of the middle frame 1 in sequence, wherein the back surface is the side close to the rear cover of the mobile terminal.
It should be noted that the side key grooves 12 include other notches for accommodating the side keys 3 of the mobile terminal, in addition to the above-mentioned notch facing the back of the middle frame 1.
In one embodiment, the key connecting portion 23 is first installed in the side key slot 12, and then the main board connecting portion 21 sequentially passes through the second through hole 113 and the first through hole 111, so that the main board connecting portion 21 and the key connecting portion 23 are both disposed on the back surface of the middle frame 1, meanwhile, the lead 22 passes through the first through hole 111 and the second through hole 113, and a partial structure of the lead 22 is disposed in the routing area 112.
This center 1 can realize, mainboard connecting portion 21 and button connecting portion 23 all are located the back of center 1, but lead wire 22 passes the connection that realizes mainboard connecting portion 21 and button connecting portion 23 by the front of center 1, and then can guarantee that the terminal surface of side keyway 12 is identical with the inside device that corresponds position department of mobile terminal, forms waterproof construction 6, and this waterproof construction 6 can play better water-proof effects to realize higher waterproof performance through lower cost.
In one embodiment, based on the structure of the middle frame 1, a sealing layer 4 is disposed on the front surface of the middle frame 1, and the sealing layer 4 is disposed at the through hole structure 11 for sealing the first through hole 111, the trace area 112, and the second through hole 113 to prevent dust or liquid from entering the back surface of the middle frame 1 through the first through hole 111, the trace area 112, the second through hole 113, and the like. In addition, because this center 1 can be established at the front of center 1 by sealing layer 4, consequently make things convenient for the arrangement of sealing layer 4 more, this sealing layer 4 cooperates with waterproof construction 6, can improve this mobile terminal's waterproof performance better, is convenient for more reach higher waterproof grade with lower cost realization.
In one embodiment, an installation groove 13 is formed in the front surface of the through hole structure 11 along the circumferential edge of the through hole structure 11 of the middle frame 1, the installation groove 13 is used for installing the sealing layer 4 so as to ensure that the surface of the sealing layer 4 is flush with the surface of the middle frame 1, and the plane of the installation groove 13 is flush with the part of the routing area 112 facing the front surface of the middle frame, so that good sealing and waterproof effects can be ensured, and the flatness of the integral structure formed by the middle frame 1 and the sealing layer 4 can be ensured.
Because the back of the side key groove 12 directly forms the sealed waterproof structure 6, the lead 22 can be sealed only by arranging the waterproof cover plate on the front of the middle frame 1, and a high waterproof effect can be achieved.
In one embodiment, set up waterproof flexible glue layer at the back of center 1, waterproof flexible glue layer and the terminal surface adhesive connection of side keyway 12, waterproof flexible glue layer covers side keyway 12, forms waterproof construction 6, and the notch that will incline keyway 12 through waterproof flexible glue layer is sealed to avoid dust or liquid to enter into the back of center 1 through the notch of side keyway 12. The waterproof glue layer is matched with the sealing layer 4, so that a higher waterproof grade is achieved at lower cost.
In an exemplary embodiment, there is provided a middle frame, which comprises the structure of any one of the middle frames described above, as shown with reference to fig. 3-7 or 8-11, the middle frame 1 further comprises a key mounting structure for mounting the side keys 3 of the mobile terminal, and mounting through holes 5 for mounting the side keys 3, the side keys 3 being electrically connected to the key connecting portions 23.
When the side key 3 is pressed, a signal corresponding to the pressing action is transmitted to the key connecting portion 23, and the key connecting portion 23 transmits the signal to the main board connecting portion 21 through the lead 22 and transmits the signal to the main board through the main board connecting portion 21, so that a corresponding function is realized.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention 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 invention is limited only by the appended claims.
Claims (17)
1. A mobile terminal, comprising:
the middle frame, and a side key circuit board which are arranged on the middle frame;
the side key circuit board comprises a key connecting part, a main board connecting part and a lead, wherein the lead is used for connecting the key connecting part and the main board connecting part;
the middle frame is provided with a through hole structure, the through hole structure comprises a through hole, the through hole penetrates through the middle frame, the mainboard connecting part is positioned on the back surface of the middle frame, the lead wire penetrates through the through hole structure, the second end of the lead wire is connected with the key connecting part, the first end of the lead wire is connected with the mainboard connecting part, and the back surface of the middle frame is one side close to a rear cover of the mobile terminal;
the middle frame comprises a side key groove, the key connecting portion is located in the side key groove, the end face of the side key groove is matched with a device at a corresponding position inside the mobile terminal, and a waterproof structure is formed.
2. The mobile terminal of claim 1, wherein the via structure comprises a first via and a routing area, one notch of the side key slot faces the front face of the middle frame, and the lead passes through the first via and mates with the routing area.
3. The mobile terminal of claim 2, comprising a sealing layer covering the through-hole structure, and wherein the side key slot is a notch in a front face of the bezel.
4. The mobile terminal of claim 1, wherein the via structure comprises a first via, a routing area, and a second via, one notch of the side key slot faces the back side of the middle frame, and the lead passes through the first via and the second via.
5. The mobile terminal according to claim 1, wherein a key switch is disposed on the key connection portion, and the key switch is engaged with the side key.
6. The mobile terminal according to claim 4, wherein a sealing layer is disposed at the through hole structure, and the sealing layer is disposed on a front surface of the middle frame.
7. The mobile terminal according to claim 6, wherein the middle frame is formed with a mounting groove at a circumferential edge of the through hole structure at a front surface of the middle frame, the mounting groove being for mounting the sealing layer.
8. The mobile terminal as claimed in claim 7, wherein the plane of the mounting slot is flush with a portion of the routing area facing the front surface of the middle frame.
9. The mobile terminal according to claim 6, wherein the sealing layer is adhesively connected with the middle frame by foam and/or glue.
10. A mobile terminal according to claim 3 or 6, wherein the sealing layer comprises a waterproof cover plate.
11. A mobile terminal according to claim 3 or 6, wherein the surface of the sealing layer is flush with the surface of the middle frame.
12. The mobile terminal according to claim 2 or 4, wherein the plane of the trace area is lower than the surface of the middle frame.
13. The mobile terminal according to claim 1, further comprising a waterproof soft adhesive layer, wherein the waterproof soft adhesive layer is adhesively connected to the end surface of the side key groove, and the waterproof soft adhesive layer covers the side key groove to form the waterproof structure.
14. The mobile terminal of claim 1, wherein the middle frame further comprises a key mounting structure and a mounting through hole, the key mounting structure is used for mounting a side key of the mobile terminal, the mounting through hole is communicated with the key mounting structure and the side key groove, the mounting through hole is used for mounting the side key, and the side key is electrically connected with the key connecting portion.
15. The utility model provides a center, is applied to mobile terminal, its characterized in that, the center is provided with through-hole structure, through-hole structure includes the through-hole, the through-hole runs through the center, the center still includes the side keyway, the side keyway is used for installing the button connecting portion of side key circuit board, the terminal surface of side keyway is identical with the inside device that corresponds position department of mobile terminal, forms waterproof construction.
16. The middle frame according to claim 15, wherein the through hole structure includes a first through hole and a trace area, one notch of the side key slot faces the front surface of the middle frame, and the trace area and the first through hole are used for wiring the lead of the side key circuit board.
17. The middle bezel of claim 15, wherein the via structure includes a first via, a routing area, and a second via, one notch of the side key slot facing a back side of the middle bezel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010792892.9A CN114070914B (en) | 2020-08-06 | 2020-08-06 | Mobile terminal and middle frame |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010792892.9A CN114070914B (en) | 2020-08-06 | 2020-08-06 | Mobile terminal and middle frame |
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| CN114743817A (en) * | 2022-05-06 | 2022-07-12 | 维沃移动通信有限公司 | Electronic device |
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| CN114070914B (en) | 2024-08-20 |
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