CN106128827B - Side key structure and mobile terminal - Google Patents

Abstract

The present invention is applied to technical field of electronic equipment, a kind of side key structure is provided to be installed in the lid of mobile terminal, lid is provided with mounting hole in its sidepiece, side key structure includes the side switch flexible board of the side switch key body that is embedded in the mounting hole of lid and main circuit board electric connection, the keying body being welded on side switch flexible board and is adhered to silica gel part on side switch flexible board and between side switch flexible board and side switch key body, and keying body sealed set is between silica gel part and side switch flexible board.The side key structure by silica gel part it is bonding with side switch flexible board with by keying body sealed set between silica gel part and side switch flexible board, so as to realize the sealing waterproof to keying body, in addition, by side switch key body being embedded in the mounting hole of lid so that keying body and silica gel part are mounted in lid, it ensure that the outward appearance of lid and side switch key body is clean and tidy and attractive in appearance.

Description

Side key structure and mobile terminal

technical field

The invention belongs to the technical field of electronic equipment, and in particular relates to a side key structure and a mobile terminal with the side key structure.

Background technique

With the increasing popularity and development of mobile terminals such as mobile phones, users have higher and higher requirements for mobile phones. For example, more users believe that waterproof is an indispensable technical index of mobile phones. The waterproof performance of the side keys of the mobile phone will directly determine the waterproof effect of the mobile phone.

At present, the waterproof design of the side keys of the mobile phone usually includes two kinds of double-material injection molding and polycarbonate (PC) buttons. Among them, the material of the double-material injection buttons is limited to TP (Thermoplastic polyurethanes, thermoplastic polyurethane elastomer rubber), and The hand feel of this kind of case is usually difficult to control. For example, if the hardness of TPU is too strong, the key feels too hard; For models with a thicker body.

With the development of the trend of thinner and lighter bodies, PC keys are usually used, that is, keys combined with plastic and rubber. The waterproof structure of the button is arranged between the button contact and the conductive membrane of the metal shrapnel, wherein the conductive membrane can be used as a button switch. The bone growing out of the back shell of the mobile phone is used to paste the conductive diaphragm and seal the waterproof film. The sealing ring is used on the bone to seal the front and rear shells, that is, the skirt is positioned with the mobile phone shell to ensure that the key body does not fall off. This type of sealing and waterproof membrane needs a certain space around it for pasting and extrusion, and it is difficult to realize it due to insufficient space.

More and more mobile phones adopt the design method of integral metal battery cover for the sake of simple and beautiful appearance. How to ensure the appearance and effective sealing and waterproof of the external side button at the same time has become a technical problem to be solved urgently in the industry.

Contents of the invention

The purpose of the present invention is to provide a side key structure, aiming at solving the technical problem of how to simultaneously ensure the appearance and effective sealing and waterproofing in the prior art.

The present invention is achieved in this way, a side key structure is installed in the cover body of the mobile terminal, the cover body is provided with a mounting hole on its side, and the side key structure includes a mounting hole embedded in the cover body The side key body inside, the side key flexible board electrically connected with the main circuit board, the key body welded on the side key flexible board, and the side key flexible board bonded on the side key flexible board and located on the side key flexible board The silicone part between the board and the side key body, the key body is sealed and arranged between the silicone part and the side key flexible plate.

Further, the side key structure further includes a first foam tape for bonding the silicone part and the side key flexible plate, and the first foam tape is ring-provided on the peripheral side of the key body.

Further, the silicone part includes a main body abutting against the side key body, and a protruding edge extending along the periphery of the main body and bonded to the side key flexible plate by using the first foam tape , the main body, the protruding edge and the side key flexible plate enclose to form an accommodating cavity for accommodating the key body.

Further, the side key structure also includes a shell member bonded to the inner side of the cover and provided with an opening, the main body part is accommodated in the opening and abuts against the side key body, the The other side of the protruding edge is bonded to the inner side of the housing member.

Further, the side key structure further includes a second foam tape for adhering the protruding edge to the inner side of the housing part.

Further, the side key structure further includes a third foam tape for bonding the housing part to the inside of the cover.

Further, the side key structure further includes a metal reinforcing sheet bonded to the side of the side key flexible plate away from the key body.

Further, the side key structure further includes fasteners for locking the metal reinforcement sheet to the shell member.

The present invention also provides a mobile terminal, comprising a cover body provided with an installation hole and a side key structure installed in the cover body, and the side key structure is the above side key structure.

Further, the cover is an all-metal cover.

Compared with the prior art, the technical effect of the present invention is: the side key structure seals the button body between the silicone part and the side key flexible plate through the bonding of the silicone part and the side key flexible plate In order to realize the sealing and waterproof of the key body, in addition, by embedding the side key body in the installation hole of the cover body, the key body and the silicone part are installed in the cover body , ensuring that the appearance of the cover body and the side key body is neat and beautiful.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the embodiments of the present invention or in the description of the prior art. Obviously, the accompanying drawings described below are only illustrations of the present invention For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 is an assembly diagram of a side key structure provided by an embodiment of the present invention;

Fig. 2 is an exploded view of the side bond structure in Fig. 1;

Fig. 3 is a structural diagram of the side key structure in Fig. 1 including the housing part;

Fig. 4 is an exploded view of the side key structure in Fig. 3;

Fig. 5 is a structural diagram of the side key structure installed in the cover body in Fig. 3;

Fig. 6 is an exploded view of the side key structure installed in the cover in Fig. 5 .

Explanation of reference signs:

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should therefore not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Please refer to Figures 1 to 6, the side key structure provided by the embodiment of the present invention is installed in the cover body 10 of the mobile terminal, the cover body 10 is provided with an installation hole 12 on its side, and the side key structure includes The side key body 20 in the mounting hole 12 of the cover body 10, the side key flexible board 30 electrically connected to the main circuit board (not shown), and the key body welded on the side key flexible board 30 50 and the silicone part 40 bonded to the side key flexible plate 30 and located between the side key flexible plate 30 and the side key body 20, the key body 50 is sealed and arranged on the silicone part 40 and the side key flexible board 30.

In the side key structure provided by the embodiment of the present invention, the key body 50 is sealed and arranged between the silicone part 40 and the side key flexible plate 30 by bonding the silicone part 40 to the side key flexible plate 30 , In this way, the sealing and waterproofing of the key body 50 is realized. In addition, by embedding the side key body 20 in the mounting hole 12 of the cover body 10, the key body 50 and the silicone part 40 are installed on the Inside the cover body 10 , the clean and beautiful appearance of the cover body 10 and the side key body 20 is ensured.

In this embodiment, the key body 50 is electrically connected to the side key flexible board 30 by welding the key body 50 on the side key flexible board 30 , and by pressing the side key body 20 pushes the silicone part 40 against the key body 50 , so that the key body 50 is electrically connected to the side key flexible board 30 to trigger the corresponding function of pressing the side key body 20 .

In this embodiment, the silicone part 40 is arranged between the side key body 20 and the key body 50 to play a certain buffering effect and prevent the side key body from colliding with the key body. The hard-to-hard friction between the bodies 50; in addition, the silicone part 40 is provided to completely seal the key body 50, so as to play a good waterproof effect.

Please refer to Fig. 1 to Fig. 6, further, the side key structure also includes a first foam tape 60 for bonding the silicone part 40 and the side key flexible plate 30, the first foam tape The ring 60 is disposed on the peripheral side of the key body 50 . By bonding the first foam tape 60 between the silicone piece 40 and the side key flexible plate 30, the silicone piece 40 is fixedly connected to the side key flexible plate 30, and at the same time, The silicone part 40 is completely sealed with the side key flexible plate 30 , so that the key body 50 is completely sealed. The first foam tape 60 is ringed around the key body 50 so that the key body 50 is completely sealed between the silicone part 40 and the side key flexible plate 30 .

Please refer to FIG. 1 to FIG. 6 further, the silicone part 40 includes a main body part 42 abutting against the side key body 20 and extending along the periphery of the main body part 42 and glued with the first foam tape 60 The protruding edge 44 connected to the side key flexible plate 30 , the main body 42 , the protruding edge 44 and the side key flexible plate 30 enclose to form an accommodating cavity 46 for accommodating the key body 50 . The main body 42 is held between the side key body and the key body 50 , and the protruding edge 44 extends outward along the periphery of the main body 42 and passes through the side key flexible plate 30 . The first foam tape 60 is sealed and connected, and is enclosed by the main body portion 42 , the protruding edge 44 , the side key flexible plate 30 and the first foam tape 60 to accommodate the key body. 50 and the accommodating cavity 46 is completely sealed, so that the key body 50 is completely sealed in the accommodating cavity 46 and has an effective waterproof function.

In this embodiment, the main body 42 and the protruding edge 44 are integrally formed.

Please refer to Fig. 3 to Fig. 6 further, the side key structure also includes a casing part 70 bonded to the inner side of the cover body 10 and provided with an opening 72, the main body part 42 is accommodated in the opening 72 and Against the side key body 20 , the other side of the protruding edge 44 is adhered to the inner side of the casing member 70 . The main body 42 of the silicone piece 40 passes through the opening 72 and is held against the side key body 20 , and the side of the protruding edge 44 away from the side key flexible plate 30 is bonded to the side key body 20 . The inner side of the housing part 70 is closed, so that the housing part 70 is completely sealed with the silicone part 40, so as to further improve the airtightness and waterproofness of the key body 50.

Please refer to FIG. 3 to FIG. 6 further, the side key structure further includes a second foam tape 62 for adhering the protruding edge 44 to the inner side of the housing part 70 . The sealing and waterproofness of the key body 50 is ensured by setting the second foamed silica gel to bond the protruding edge 44 and the inner side of the housing part 70 .

Preferably, the protruding edge 44 is provided with at least one protrusion 440 protruding toward the side of the second foam tape 62, and the protrusion 440 is provided to strengthen the connection between the second foam tape 62 and the protrusion. The adhesiveness of edge 44 plays the purpose of the second layer of waterproofing. More preferably, the protrusion 440 is disposed around the periphery of the main body 42 . The number of the protrusions 440 may be two or three circles, or even more circles, which are not listed one by one.

Please refer to FIG. 3 to FIG. 6 , further, the side key structure further includes a third foam tape 64 for bonding the housing part 70 to the inside of the cover body 10 . The outer side of the housing part 70 is bonded to the inner side of the cover body 10 to fix the housing part 70 in the cover body 10, and the third foam tape 64 is used to secure the The housing part 70 is fixed together with the cover body 10 . In order to enhance the sealing performance and waterproof performance between the casing part 70 and the cover body 10, the purpose of the third layer of waterproofing is achieved.

Please refer to FIG. 3 to FIG. 6 , further, the side key structure further includes a metal reinforcement sheet 80 bonded to the side of the side key flexible plate 30 away from the key body 50 . Preferably, the side key flexible plate 30 and the metal reinforcing sheet 80 are fixed together by double-sided tape. By arranging the metal reinforcement sheet 80 to enhance the strength of the side key structure of the whole machine, the problem of deformation caused during the pressing of the side key body 20 is reduced.

Please refer to FIG. 1 to FIG. 6 , further, the side key structure further includes a fastener 90 for locking the metal reinforcing sheet 80 to the shell member 70 . The fastener 90 passes through the metal reinforcing sheet 80 and is locked on the housing, so as to fix the metal reinforcing sheet 80 and enhance the strength of the side key structure. Preferably, the fastener 90 may be a screw, a screw or the like.

Please refer to FIGS. 1 to 6. The mobile terminal provided by the embodiment of the present invention includes a cover body 10 provided with a mounting hole 12 and a side key structure installed in the cover body 10. The side key structure is the above-mentioned side key structure. . The side key structure provided in this embodiment has the same structure as the side key structures described in the above embodiments, and also has the same function, so details will not be repeated here.

Please refer to FIGS. 1 to 6 , further, the cover 10 is an all-metal cover 10 . By setting the cover body 10 as an all-metal cover body 10, the texture and appearance of the mobile terminal can be enhanced.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (8)

1. a kind of side key structure, is installed in the lid of mobile terminal, the lid is provided with mounting hole in its sidepiece, and its feature exists In the side key structure includes the side switch key body being embedded in the mounting hole of the lid, the side being electrically connected with main circuit board Key flexible board, the keying body being welded on the side switch flexible board and it is adhered on the side switch flexible board and positioned at described Silica gel part between side switch flexible board and the side switch key body, the keying body sealed set is in the silica gel part and the side Between key flexible board；The side key structure also includes being used to be bonded the silica gel part and the first foam rubber of the side switch flexible board Band, first foam tape are located on the week side of boss of the keying body, and the silica gel part includes supporting with the side switch key body phase The main part held and extend along the main part periphery and be adhered to the side switch flexible board using first foam tape On protrusion edge, the main part, the prominent edge and the side switch flexible board enclose the appearance to form the accommodating keying body Cavity is put, wherein, the side switch is healthy and strong makes the main part support to the keying body, and the protrusion under external force Edge presses to the side switch flexible board, and the attachment structure intensity that the main part will not be destroyed at the prominent edge.

2. side key structure as claimed in claim 1, it is characterised in that also include being adhered on the inside of the lid and being provided with opening Housing component, the main part is contained in the opening and supported with the side switch key body phase, the opposite side of the prominent edge It is adhered to the inner side of the housing component.

3. side key structure as claimed in claim 2, it is characterised in that also include the prominent edge being adhered to the housing component Second foam tape of inner side.

4. side key structure as claimed in claim 2, it is characterised in that also include the housing component being adhered in the lid 3rd foam tape of side.

5. side key structure as claimed in claim 2, it is characterised in that also include being adhered to the side switch flexible board deviates from institute State the metal reinforcement strip of keying body side.

6. side key structure as claimed in claim 5, it is characterised in that also include the metal reinforcement strip locking onto the shell Fastener on body part.

7. a kind of mobile terminal, including the lid provided with mounting hole and the side key structure that is installed in the lid, its feature It is, the side key structure is the side key structure as described in claim 1 to 6 any one.

8. mobile terminal as claimed in claim 7, it is characterised in that the lid is all-metal lid.