CN215955140U

CN215955140U - Key structure and electronic equipment

Info

Publication number: CN215955140U
Application number: CN202121932557.0U
Authority: CN
Inventors: 曾俊贤
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2022-03-04
Anticipated expiration: 2031-08-17

Abstract

The application discloses button structure and electronic equipment, this button structure include casing, button, circuit board and first sealing member, and the casing has the button hole, and the button corresponds the button hole and is connected with the casing, and the circuit board sets up in the casing, and include with the first end of button contact and be used for with circuit mainboard electric connection's second end, first sealing member is located between second end and the circuit mainboard. The key structure meets the sealing requirement of a higher level and has lower material cost and assembly difficulty.

Description

Key structure and electronic equipment

Technical Field

The application relates to the technical field of electronic equipment, in particular to a key structure and electronic equipment.

Background

With the continuous development of science and technology and the continuous improvement of the living standard of people, electronic equipment such as mobile phones, tablet computers and the like become common tools for people gradually. As the scenes of using the electronic device by the user are more and more complicated, the requirements on the performance of the antenna, the waterproof performance and the like of the electronic device are also more and more high.

Aiming at the waterproof performance of electronic equipment, the waterproof key structure of the electronic equipment on the market at present cannot meet the sealing requirement of a higher level, and has a complex structure and high assembly difficulty.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a button structure and electronic equipment, can have lower material cost and equipment degree of difficulty when satisfying higher level's sealed requirement.

In a first aspect, an embodiment of the present application provides a key structure; the key structure comprises a shell, a key, a circuit board and a first sealing element, wherein the shell is provided with a key hole, the key corresponds to the key hole and is connected with the shell, the circuit board is arranged on the shell and comprises a first end in contact with the key and a second end electrically connected with a circuit main board, and the first sealing element is positioned between the second end and the circuit main board.

According to the key structure disclosed by the embodiment of the application, the first sealing element is arranged between the second end of the circuit board and the circuit main board, so that impurities such as water vapor and the like entering the shell can be effectively prevented from entering the side where the circuit main board is located from the side where the circuit board is located, the circuit main board is prevented from being damaged by the impurities such as water vapor and the like, and the sealing requirement of a higher level can be met; the second end of circuit board is used for with circuit board electric connection, and is located the one side that the button was kept away from to the circuit board, through setting up first sealing member between the second end of circuit board and circuit board, also seal the second end that the button was kept away from to the circuit board, for among the correlation technique the first end that the circuit board is close to the button seals, has avoided using a plurality of first sealing members to seal a plurality of buttons, has reduced the material cost and the equipment degree of difficulty of button structure by a wide margin.

In a second aspect, an embodiment of the present application provides an electronic device, which includes the above-mentioned key structure.

Based on the electronic equipment in the embodiment of the application, the electronic equipment with the key structure has good waterproof performance, and the service life of the electronic equipment is prolonged.

According to the key structure and the electronic equipment, the first sealing element is arranged between the second end of the circuit board and the circuit main board, so that impurities such as water vapor entering the shell can be effectively prevented from entering the side where the circuit main board is located from the side where the circuit board is located, the circuit main board is prevented from being damaged by the impurities such as water vapor, and the sealing requirement of a higher level can be met; the second end of circuit board is used for with circuit board electric connection, and is located the one side that the button was kept away from to the circuit board, through setting up first sealing member between the second end of circuit board and circuit board, also seal the second end that the button was kept away from to the circuit board, for among the correlation technique the first end that the circuit board is close to the button seals, has avoided using a plurality of first sealing members to seal a plurality of buttons, has reduced the material cost and the equipment degree of difficulty of button structure by a wide margin.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a partial structural schematic diagram of an electronic device in an embodiment of the related art;

FIG. 2 is a partial cross-sectional view of an electronic device in another embodiment of the prior art;

FIG. 3 is an exploded view of a key structure in an embodiment of the present application;

FIG. 4 is an exploded view of another perspective key structure in an embodiment of the present application;

FIG. 5 is an enlarged schematic view at A in FIG. 4;

FIG. 6 is a schematic structural diagram of a circuit board and a first sealing member according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural view of a stent in an embodiment of the present application;

fig. 8 is an assembly view of the second end of the circuit board and the recess of the housing in an embodiment of the present application.

Reference numerals: 10', a waterproof key structure; 11', a housing; 111', key holes; 112', a wire through hole; 12', a key; 13', a circuit board; 14', sealing foam;

20', a waterproof key structure; 21', a housing; 211' key holes; 22', a key; 23', a sealing rubber ring; 24', a circuit board;

10. a key structure; 11. a housing; 11a, a main body portion; 11b, an abutting portion; 111. a key hole; 112. a first surface; 1121. a groove; 1122. a wire passing groove; 1122a, a first segment; 1122b, a second segment; 1122c, a third segment; 1123. a notch; 113. a second surface; 1131. a through hole; 114. bonding surface; 12. a circuit board; 121. a first end; 121a, a circuit board switch contact; 122. a second end; 123. a connecting section; 1231. a first sub-connection section; 1232. a second sub-connection section; 1233. a third sub-connection section; 13. a first seal member; 14. a reinforcing plate; 15. a support; 151. a frame portion; 152. a fitting portion; 153. a boss portion; 16. a second seal member; 17. a third seal member; 18. pressing a key; 19. a circuit main board; 191. a substrate; 192. an elastic sheet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Specifically, as shown in fig. 1, fig. 1 is a schematic partial structure diagram of an electronic device in an embodiment in the related art. For example, in a related art, the waterproof key structure 10 ' includes a housing 11 ', a key 12 ', a circuit board 13 ', and a sealing foam 14 ', the housing 11 ' has a key hole 111 ', the key 12 ' is connected to the housing 11 ' corresponding to the key hole 111 ', the circuit board 13 ' is disposed on the housing 11 ', one end of the circuit board 13 ' contacts the key 12 ' through a wire passing hole 112 ' on the housing 11 ', and the sealing foam 14 ' covers the wire passing hole 112 ' of the housing 11 ' to achieve waterproof sealing. It can be understood that the sealing foam 14 'achieves the sealing and waterproof effect by generating a certain compression with the back adhesive on the battery cover of the electronic device, but the compression degree of the sealing foam 14' is limited, so that the sealing and waterproof effect cannot meet the sealing requirement of a higher grade (such as a grade above IPX 8).

For example, as shown in fig. 2, fig. 2 is a partial cross-sectional view of an electronic device in another embodiment of the prior art. In another related art, the waterproof key 22 'structure 20' includes a housing 21 ', a key 22' and a sealing rubber ring 23 ', the housing 21' has a key hole 211 ', the key 22' is connected to the housing 21 'corresponding to the key hole 211', the sealing rubber ring 23 'encloses a portion of the key 22' located in the housing 21 ', and an outer peripheral side of the sealing rubber ring 23' is in interference fit with a hole wall of the key 22 'hole 211' to achieve waterproof sealing. It can be understood that the number of the keys 22 ' on the electronic device is not limited to one, and there may be two, three or more, so to ensure the good sealing and waterproof performance of the electronic device, it is necessary to adapt a corresponding sealing rubber ring 23 ' to each key 22 ' on the electronic device, thereby resulting in higher material cost and assembly cost of the electronic device.

In order to solve the above technical problem, please refer to fig. 3 to 8, a first aspect of the present application provides a key structure 10, which can satisfy a high-level sealing requirement and simultaneously ensure that the material cost and the assembly difficulty of the key structure 10 are low.

The key structure 10 includes a housing 11, a key 18, a circuit board 12 and a first sealing element 13, the housing 11 has a key hole 111, the key 18 is connected to the housing 11 corresponding to the key hole 111, the circuit board 12 is disposed on the housing 11, the circuit board 12 includes a first end 121 contacting the key 18 and a second end 122 electrically connected to the circuit board 19, and the first sealing element 13 is located between the second end 122 and the circuit board 19.

Based on the key structure 10 in the embodiment of the present application, by disposing the first sealing element 13 between the second end 122 of the circuit board 12 and the circuit board 19, the first sealing element 13 can effectively prevent impurities such as water vapor and the like entering the housing 11 from entering the circuit board 19 from the side where the circuit board 12 is located, so as to prevent the impurities such as water vapor and the like from damaging the circuit board 19, and achieve a high-level sealing requirement; the second end 122 of the circuit board 12 is used for electrically connecting with the circuit board 19, and is located on one side of the circuit board 12 away from the keys 18, and the first sealing member 13 is disposed between the second end 122 of the circuit board 12 and the circuit board 19, that is, the second end 122 of the circuit board 12 away from the keys 18 is sealed, so that compared with the related art in which the first end 121 of the circuit board 12 close to the keys 18 is sealed, the use of a plurality of first sealing members 13 for sealing a plurality of keys 18 is avoided, and the material cost and the assembly difficulty of the key structure 10 are greatly reduced.

The key structure 10 is described in detail below with reference to fig. 3 to 8, and the key structure 10 includes a housing 11, a key 18, a circuit board 12, and a first sealing member 13.

As shown in fig. 3-5, fig. 3 is an exploded view of a key structure in an embodiment of the present application, fig. 4 is an exploded view of a key structure from another perspective in an embodiment of the present application, and fig. 5 is an enlarged schematic view of a point a in fig. 4.

The housing 11 serves as a carrier for carrying other components in the key structure 10, where the shape and material of the housing 11 are not limited, a designer should reasonably design the shape of the housing 11 according to different types of electronic devices, and the designer should select a material with good rigidity and strength on the basis of saving cost, so that the housing 11 will not fail (e.g., bend or break) after at least other components are carried on the housing 11. The casing 11 has key holes 111, where the specific number of the key holes 111 is not limited, the number of the key holes 111 may be one, two, three, or more, and the specific position of the key holes 111 on the casing 11 is not limited, for example, the key holes 111 may be distributed on the side surface of one side of the casing 11, and the key holes 111 may also be distributed on the side surfaces of two sides of the casing 11.

The key 18 is used as a trigger switch in the key structure 10, the key 18 is connected to the housing 11 corresponding to the key hole 111, that is, the key hole 111 is equivalent to an accommodating space for accommodating the key 18 on the housing 11, so that the appearance surface of the key 18 protrudes out of the side surface of the housing 11 as little as possible, thereby ensuring the overall aesthetic property of the key structure 10, and here, the specific connection mode between the key 18 and the housing 11 is not limited, as long as after the key 18 is connected to the housing 11, the key 18 can slide inwards along the key hole 111 of the housing 11 under the action of external force.

The circuit board 12 is used as a component for transmitting electrical signals in the key structure 10, and the circuit board 12 may be a flexible printed circuit 12(FPC) or a flexible printed circuit board 12 (FPBC). The wiring board 12 is provided to the housing 11, and the relative positional relationship and the connection relationship between the wiring board 12 and the housing 11 will be described later. The circuit board 12 includes a first end 121 contacting the key 18, where the "first end 121" is understood to be an end of the circuit board 12 close to the key 18, the first end 121 of the circuit board 12 includes a circuit board switch contact 121a contacting the key 18, the circuit board switch contact 121a is electrically connected to the circuit board 12 and can be sealed and fixed with the first end 121 of the circuit board 12 by dispensing on its peripheral side, the key 18 slides inwards along the key hole 111 of the housing 11 under the action of external force and presses the circuit board switch contact 121a, the circuit board switch contact 121a deforms under the action of force and triggers a switch signal, and the switch signal may be a volume control signal or a display control signal. The circuit board 12 further includes a second end 122 for electrically connecting with the circuit board 19, where the "second end 122" is understood to be an end of the circuit board 12 away from the key 18, the circuit board 19 serves as one of the controllers in the electronic device for receiving and processing a switch signal triggered by the circuit switch contact, the circuit board 19 may include a substrate 191 and a spring 192 disposed on one side of the substrate 191 and electrically connected to the substrate 191, the second end 122 of the circuit board 12 includes a gold finger electrically connected to the spring 192 of the circuit board 19, the key 18 slides inward along the key hole 111 of the housing 11 under an external force and presses the circuit switch contact 121a, the circuit switch contact 121a is deformed under the force and triggers the switch signal, and the switch signal is transmitted to the gold finger (not shown) of the second end 122 through a connecting section 123 (described below) of the circuit board 12, the golden finger of the second end 122 further transmits the switch signal to the spring 192 contacting with the circuit board 19, the spring 192 of the circuit board 19 further transmits the switch signal to the substrate 191 of the circuit board 19, and the substrate 191 of the circuit board 19 can perform corresponding processing on the switch signal.

The first sealing member 13 is used as a component of the key structure 10 for preventing impurities such as moisture from entering the circuit board 19 from the second end 122 of the circuit board 12, the first sealing member 13 is located between the second end 122 and the circuit board 19, the first sealing member 13 may be disposed on a side of the second end 122 of the circuit board 12 close to the circuit board 19, the first sealing member 13 may also be disposed on a side of the circuit board 19 close to the second end 122 of the circuit board 12, of course, the first sealing member 13 may also be disposed on the housing 11, as long as after the relative positions of the circuit board 12 and the circuit board 19 on the housing 11 are determined, the first sealing member 13 is interposed between the second end 122 of the circuit board 12 and the circuit board 19, so as to realize the sealing of the first sealing member 13 between the second end 122 of the circuit board 12 and the circuit board 19. The specific material of the first sealing member 13 is not limited, and a designer only needs to reasonably select a material with good sealing performance on the basis of reducing the cost. The specific structure of the first seal member 13 will be described later.

As shown in fig. 3-4, it is understood that the circuit board 12 and the circuit board 19 of the electronic device may be disposed on the same side of the housing 11, and considering that the housing 11 is also used for carrying other sub-components of the electronic device such as a battery besides the keys 18, the circuit board 12 and the circuit board 19, in order to avoid damage of other sub-components of the electronic device such as a battery in the electronic device when they meet water, it is further designed that, in some embodiments, the housing 11 has a first surface 112 and a second surface 113 disposed opposite to each other, a groove 1121 located on a side of the first surface 112, and a through hole 1131 located on a side of the second surface 113 and communicating with the groove 1121, the circuit board 12 is disposed on the first surface 112, the circuit board 19 is disposed on the second surface 113, the first sealing member 13 is disposed on a bottom wall of the groove 1121, and a portion of the circuit board 19 is used for passing through the through hole 1131, The recess 1121 and the first sealing member 13 are electrically connected to the second end 122.

The first surface 112 is a surface of the side of the casing 11 close to the display screen of the electronic device, and the second surface 113 is a surface of the side of the casing 11 close to the battery of the electronic device, that is, the key hole 111 of the casing 11 is communicated with the front surface screen compartment of the casing 11, and the circuit board 12 is located in the front surface flat compartment of the casing 11 and does not need to pass through the battery compartment of the casing 11.

The recess 1121 is formed to extend from a portion of the first surface 112 of the housing 11 toward the second surface 113 of the housing 11, the through hole 1131 extends from the portion of the second surface 113 of the housing 11 toward the first surface 112 of the housing 11 to a bottom wall of the recess 1121 to communicate with the recess 1121, and a cross section of the recess 1121 perpendicular to the extending direction thereof is larger than a cross section of the through hole 1131 perpendicular to the extending direction thereof so that the recess 1121 and the through hole 1131 are combined to form a step structure, and a step surface of the step structure is a bottom wall of the recess 1121.

The first sealing element 13 is disposed on the bottom wall of the groove 1121, the first sealing element 13 is a sealing gum, and the sealing gum covers at least one circle around the circumference of the through hole 1131 on the bottom wall of the groove 1121, that is, the sealing gum is annular.

The elastic piece 192 of the circuit board 19 passes through the annular hollow area of the sealing adhesive and the groove 1121 corresponding to the through hole 1131 to be electrically connected to the gold finger on the second end 122 of the circuit board 12.

In the above design, the circuit board 12 and the circuit board 19 are disposed on the first surface 112 and the second surface 113 of the housing 11, which are disposed opposite to each other, the housing 11 separates the circuit board 12 and the circuit board 19, the circuit board 19 passes through the groove 1121 of the housing 11 corresponding to the through hole 1131 of the housing 11 to electrically connect the second end 122 of the circuit board 12, and the first sealing member 13 is disposed on the bottom wall of the groove 1121 to achieve good sealing between the second end 122 of the circuit board 12 and the circuit board 19, so as to effectively prevent impurities such as moisture from entering from the key hole 111 of the housing 11 and entering into the battery compartment where the second surface 113 of the housing 11 is located through the groove 1121 and the through hole 1131 in sequence via the front panel compartment where the first surface 112 of the housing 11 is located, thereby effectively improving the safety of other sub-components such as a battery in an electronic device.

As shown in fig. 6, fig. 6 is a schematic structural diagram of a circuit board and a first sealing member in an embodiment of the present application.

It is understood that the first end 121 and the second end 122 of the circuit board 12 may be a rigid circuit board, and the first end 121 and the second end 122 of the circuit board 12 may also be a flexible circuit board, of course, one of the first end 121 and the second end 122 of the circuit board 12 may be a rigid circuit board, and the other of the first end 121 and the second end 122 of the circuit board 12 may be a flexible circuit board. In order to enhance the structural strength of the second end 122 of the circuit board 12 to facilitate the installation between the second end 122 of the circuit board 12 and the housing 11 when the second end 122 of the circuit board 12 is a flexible circuit board, it is further designed that in some embodiments, the key structure 10 further includes a reinforcing plate 14, and the reinforcing plate 14 is disposed on a side of the second end 122 away from the first sealing member 13.

The reinforcing plate 14 serves as a structure for reinforcing the second end 122 of the circuit board 12 in the key structure 10, the reinforcing plate 14 should be made of a material with good rigidity, and the reinforcing plate 14 can be fixed to the side of the second end 122 of the circuit board 12 away from the first sealing member 13 by gluing. Of course, when the first end 121 of the circuit board 12 is a flexible circuit board, the reinforcing plate 14 may also be disposed at the first end 121 of the circuit board 12 to enhance the structural strength of the first end 121 of the circuit board 12, so that the key 18 presses the first end 121 of the circuit board 12 to effectively trigger the circuit board switch contact 121a, and the reinforcing plate 14 may also be fixed to the side of the first end 121 of the circuit board 12, which is opposite to the circuit board switch contact 121a, by gluing. And it is understood that the stiffening plate 14 may be a steel sheet.

In the above design, by disposing the reinforcing plate 14 on the side of the second end 122 of the circuit board 12 far from the first sealing member 13, the reinforcing plate 14 enhances the structural strength of the second end 122 of the circuit board 12, thereby improving the stability of the key structure 10.

As shown in fig. 4-6, it can be understood that the reinforcing plate 14 is disposed on a side of the second end 122 of the circuit board 12 away from the first sealing member 13, the reinforcing plate 14 can be fixed to the housing 11 by gluing, and in order to reduce the difficulty in mounting between the reinforcing plate 14 and the housing 11, it is further designed that, in some embodiments, the housing 11 includes a main portion 11a and an abutting portion 11b, the key hole 111, the groove 1121 and the through hole 1131 are located on the main portion 11a, the abutting portion 11b is at least disposed on two opposite groove sidewalls of the groove 1121 and spaced from a groove bottom wall of the groove 1121, a notch 1123 is formed by surrounding a side of the abutting portion 11b close to the groove bottom wall of the groove 1121, the groove sidewall of the groove 1121 and the groove bottom wall of the groove 1121, the key structure 10 further includes a bracket 15, the bracket 15 is disposed on a side of the reinforcing plate 14 away from the second end 122 via the notch 1123, and a portion of the bracket 15 abuts against the abutting portion 11b in a direction perpendicular to the groove bottom wall of the recess 1121.

The abutting portion 11b can be regarded as a portion of the main body portion 11a located on the groove side wall of the groove 1121 is formed by extending, and the number and the shape of the abutting portions 11b are not limited herein; the abutting portions 11b may be disposed only on the two oppositely disposed slot sidewalls of the slot 1121, or the abutting portions 11b may be disposed on other slot sidewalls of the slot 1121 besides the two oppositely disposed slot sidewalls of the slot 1121; one side of the groove 1121 extends outward along a direction perpendicular to the extending direction of the groove 1121 to form the notch 1123.

The bracket 15 is used as a component of the key structure 10 for abutting and matching with the abutting portion 11b to press the reinforcing plate 14 to realize relative fixing of the position between the reinforcing plate 14 and the housing 11, the bracket 15 is inserted into the groove 1121 of the housing 11 through the notch 1123 of the housing 11, in a direction perpendicular to the groove bottom wall of the groove 1121, a part of the bracket 15 abuts against the abutting portion 11b and the reinforcing plate 14 to generate an interaction effect, and the bracket 15 presses the reinforcing plate 14 under the interaction effect to realize relative fixing of the position with the housing 11. The specific structure of the frame body will be described in detail below.

In the above design, the bracket 15 is inserted into the groove 1121 of the housing 11 through the notch 1123 of the housing 11, and in the direction perpendicular to the groove bottom wall of the groove 1121, the bracket 15 abuts against the reinforcing plate 14 and the abutting portion 11b tightly to generate an interaction force, the bracket 15 presses the reinforcing plate 14 tightly under the interaction force, so as to realize the relative fixing of the positions of the reinforcing plate 14 and the housing 11, that is, the reinforcing plate 14 is clamped and fixed between the groove bottom wall of the groove 1121 and the abutting portion 11b through the bracket 15, so that the mounting difficulty between the reinforcing plate 14 and the housing 11 is reduced, the bracket 15 can be detached to realize the detachment between the reinforcing plate 14 and the housing 11, and the practicability of the key structure 10 is enhanced; by disposing the abutting portion 11b on at least two opposite slot side walls of the groove 1121, the portion of the bracket 15 abuts against the abutting portion 11b to make the stress on the bracket 15 uniform, thereby further improving the stability of the bracket 15 pressing the reinforcing plate 14.

As shown in fig. 7-8, fig. 7 is a schematic structural diagram of a bracket in an embodiment of the present application, and fig. 8 is an assembly diagram of a second end of a circuit board and a groove of a housing in an embodiment of the present application.

Further, considering that the bracket 15 is a component which is in abutting fit with the abutting portion 11b to press the reinforcing plate 14 to realize the relative fixing of the position between the reinforcing plate 14 and the housing 11, in order to facilitate the abutting fit between the bracket 15 and the abutting portion 11b of the housing 11, it is further designed that, in some embodiments, the bracket 15 includes a bracket portion 151 and an engaging portion 152, the engaging portion 152 is connected with the bracket portion 151, and the engaging portion 152 is interposed between the bottom wall of the groove 1121 and the abutting portion 11b and abuts against the abutting portion 11 b.

Specifically, the frame body 151 is a rectangular plate-shaped structure, the engaging portion 152 is an elongated block-shaped structure, the number of the engaging portions 152 is three, the three engaging portions 152 are respectively disposed on three sides of the frame body 151, one side of the engaging portion 152 close to the bottom wall of the groove 1121 is coplanar with one side of the frame body 151 close to the bottom wall of the groove 1121, one side of the engaging portion 152 away from the bottom wall of the groove 1121 is spaced from one side of the frame body 151 away from the bottom wall of the groove 1121, that is, the abutting portion 11b and the frame body 151 form a step structure, when the frame body is inserted into the groove 1121 of the housing 11 through the notch 1123 of the housing 11, one step surface on the engaging portion 152 abuts against the abutting portion 11b, and the other step surface on the main body 11a abuts against the abutting portion 11 b.

In the above design, the bracket 15 abuts against the groove bottom wall of the groove 1121 and the abutting portion 11b through the engaging portion 152 to generate an interaction force, and the engaging portion 152 presses the reinforcing plate 14 under the action of the interaction force, so that the reinforcing plate 14 and the housing 11 are relatively fixed, and the difficulty in mounting between the reinforcing plate 14 and the housing 11 is reduced.

Further, considering that the bracket 15 is interposed between the reinforcing plate 14 and the abutting portion 11b, the abutting portion 11b applies a pressing force to the bracket 15 in a direction perpendicular to the bottom wall of the groove 1121, the bracket 15 presses the reinforcing plate 14 under the pressing force to fix the position between the reinforcing plate 14 and the housing 11, and in order to further increase the pressing force applied to the bracket 15 by the abutting portion 11b to improve the connection stability between the reinforcing plate 14 and the housing 11, it is further designed that, in some embodiments, the bracket 15 further includes at least one protruding portion 153, and the protruding portion 153 is disposed on a surface of the bracket 15 facing the side of the reinforcing plate 14.

The protrusion 153 may be regarded as a protrusion extending outward from the surface of the bracket 15 facing the reinforcing plate 14, and the specific shape and number of the protrusions 153 are not limited, for example, the protrusion 153 is an elongated protrusion, and the number of the protrusions 153 is two, and the two elongated protrusions are disposed in parallel on the main body portion 11a of the bracket 15.

In the above design, through the design of the protruding portion 153, when the bracket 15 is inserted into the groove 1121 of the housing 11 through the notch 1123 of the housing 11 and is abutted and matched with the abutting portion 11b, the protrusion on the bracket 15 and the reinforcing plate 14 generate interference to further compress and fix the reinforcing plate 14, the reinforcing plate 14 further compresses the first sealing element 13, and it is ensured that the reinforcing plate 14 does not drive the first sealing element 13 to loosen or tilt under the elastic action of the elastic sheet 192 of the circuit main board 19, so that the sealing stability of the key structure 10 is further improved.

It can be understood that, in addition to the reinforcing plate 14 being able to support the second end 122 of the circuit board 12 to enhance the structural strength of the second end 122 of the circuit board 12, the reinforcing plate 14 itself can be directly abutted against the abutting portion 11b of the housing 11 instead of the above-mentioned bracket 15, so that it is further designed that, in some embodiments, the housing 11 includes a main portion 11a and an abutting portion 11b, the key hole 111, the groove 1121 and the through hole 1131 are located on the main portion 11a, the abutting portion 11b is at least disposed on the two oppositely disposed side walls of the groove 1121 and is spaced from the bottom wall of the groove 1121, a notch 1123 is formed by surrounding one side of the bottom wall of the groove 1121, the side wall of the groove 1121 and the bottom wall of the groove 1121 of the abutting portion 11b, the reinforcing plate 14 is disposed on one side of the second end 122 away from the first sealing member 13 through the notch 1123 and along a direction perpendicular to the bottom wall of the groove 1121, a portion of the reinforcing plate 14 abuts against the abutting portion 11 b. It should be noted that the shape of the reinforcing plate 14 may be the same as or different from that of the bracket 15, and when the shape of the reinforcing plate 14 is different from that of the bracket 15, the reinforcing plate 14 may have a rectangular plate-like structure in which the edge of the reinforcing plate 14 is configured to abut against the abutting portion 11 b.

As shown in fig. 4-6, considering that the housing 11 may also carry other components in the electronic device such as a battery besides the circuit board 12 and the circuit board 19, in order to improve the space utilization of the housing 11, in some embodiments, the housing 11 further has a wire passing groove 1122 located on one side of the first surface 112, the key hole 111 is communicated with the recess 1121 through the wire passing groove 1122, and a portion of the circuit board 12 is disposed on a wall of the wire passing groove 1122. The through-slot 1122 may be understood as an accommodating space for accommodating the circuit board 12 on the housing 11, and the specific shape of the through-slot 1122 will be described below. It can be understood that, by opening the wire passing groove 1122 on the side of the first surface 112 on the housing 11 and disposing the circuit board 12 in the wire passing groove 1122, the circuit board 12 is prevented from protruding from the first surface 112 of the housing 11, so as to reserve more space for the housing 11 to carry other components in the electronic device such as the battery.

Furthermore, considering that impurities such as moisture enter the casing 11 from the key hole 111 of the casing 11 and flow from the first end 121 of the circuit board 12 to the second end 122 of the circuit board 12 along the extending direction of the wire passing groove 1122, in order to reduce the fluency of the impurities such as moisture flowing into the second end 122 of the circuit board 12 and further improve the waterproof effect of the key structure 10, in some embodiments, the circuit board 12 further includes a connecting section 123, the connecting section 123 includes a first sub-connecting section 1231 connected to the first end 121, a second sub-connecting section 1232 connected to the first sub-connecting section 1231 in a bending manner far away from the first end 121, and a third sub-connecting section 1233 connected to the second sub-connecting section 1232 in a bending manner far away from the first sub-connecting section 1231, an end of the third sub-connecting section 1233 far away from the second sub-connecting section 1232 is connected to the second end 122, and the third sub-connecting section 1233 and the first sub-connecting section 1231 are located on the same side of the second sub-connecting section 1232, the wire passing groove 1122 comprises a first section 1122a communicated with the through hole 1131 of the key 18, a second section 1122b connected with the first section 1122a in a bending manner, and a third section 1122c connected with the second section 1122b in a bending manner and communicated with the groove 1121, the first sub-connecting section 1231 is arranged corresponding to the first section 1122a, the second sub-connecting section 1232 is arranged corresponding to the second section 1122b, and the third sub-connecting section 1233 is arranged corresponding to the third section 1122 c. That is, the first sub-connection section 1231, the second sub-connection section 1232, and the third sub-connection section 1233 of the circuit board 12 are sequentially connected to form a circuit board 12 having a structure similar to a shape of a Chinese character 'ao', the shape of the wire passing groove 1122 is adapted to the shape of the circuit board 12, and the first section 1122a, the second section 1122b, and the third section 1122c of the wire passing groove 1122 are sequentially connected to form a wire passing groove 1122 having a structure similar to a Chinese character 'ao'. It can be understood that, by designing the wire passing groove 1122 to match with the structure of the circuit board 12, the emergency degree of the flow of impurities such as water vapor in the wire passing groove 1122 can be effectively delayed, so that the waterproof sealing performance of the key structure 10 is further improved.

Of course, as shown in fig. 3-4, in order to further enhance the waterproof sealing performance of the key structure 10, in some embodiments, the key structure 10 further includes a second sealing member 16, and the second sealing member 16 is disposed on the first surface 112 and covers the notch of the wire passing groove 1122 and the notch of the groove 1121. The second sealing member 16 may be a PET sheet or a double-sided tape. It can be understood that the second sealing element 16 and the first sealing element 13 form two seals of the key structure 10, so as to further improve the sealing performance of the key structure 10; the second sealing element 16 covers the notch of the wire passing groove 1122 and the notch of the groove 1121, so that the back adhesive on the second sealing element 16 can be attached to the adhesive surface of the bracket 15 to further adhere and fix the bracket 15.

Similarly, as shown in fig. 3 to fig. 4, in order to further improve the waterproof sealing performance of the key structure 10, in some embodiments, the housing 11 further has an adhesion surface 114 for being attached to a battery cover of an electronic device, and the key structure 10 further includes a third sealing member 17, where the third sealing member 17 is disposed on the adhesion surface 114 for sealing a gap between the battery cover and the housing 11. Wherein the third sealing member 17 may be a double-sided tape. It can be understood that the third sealing element 17 and the first sealing element 13 form two seals of the key structure 10, so as to further improve the sealing performance of the key structure 10.

The second aspect of the present application provides an electronic device, which includes the above-mentioned key structure 10, and the electronic device may be, but not limited to, a mobile phone, a tablet computer, etc., and of course, the above-mentioned key structure 10 is also applicable to an electronic device with an external component of a circuit board 12. It can be understood that the electronic device having the key structure 10 has good waterproof performance, and the service life of the electronic device is prolonged.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it is to be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms may be understood by those skilled in the art according to specific situations.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A key structure, comprising:

a housing having a key hole;

the key is connected with the shell corresponding to the key hole;

the circuit board is arranged on the shell and comprises a first end which is contacted with the key and a second end which is electrically connected with the circuit main board;

a first seal between the second end and the circuit board.

2. The key structure of claim 1,

the shell is also provided with a first surface and a second surface which are oppositely arranged, a groove positioned on one side of the first surface, and a through hole positioned on one side of the second surface and communicated with the groove;

the circuit board is arranged on the first surface, and the circuit main board is arranged on the second surface;

the first sealing element is arranged on the groove bottom wall of the groove;

and the part of the circuit main board is used for passing through the through hole, the groove and the first sealing piece and electrically connected with the second end.

3. The key structure of claim 2,

the key structure further comprises a reinforcing plate, and the reinforcing plate is arranged on one side, far away from the first sealing element, of the second end.

4. The key structure of claim 3,

the shell comprises a main body part and a butting part, the key hole, the groove and the through hole are positioned on the main body part, the butting part is at least arranged on two oppositely arranged groove side walls of the groove and is spaced from the groove bottom wall of the groove, and one side of the butting part close to the groove bottom wall of the groove, the groove side wall of the groove and the groove bottom wall of the groove surround to form a gap;

the key structure further comprises a support, the support is arranged on one side, away from the second end, of the reinforcing plate through the notch, and is perpendicular to the direction of the groove bottom wall of the groove, and the support is partially abutted to the abutting portion.

5. The key structure of claim 4, wherein the support comprises:

a frame portion;

the matching part is connected with the frame body part, is arranged between the groove bottom wall of the groove and the abutting part and is abutted against the abutting part.

6. The key structure of claim 4,

the support further comprises at least one protruding portion, and the protruding portion is arranged on the surface of one side, facing the reinforcing plate, of the support.

7. The key structure of claim 3,

the stiffening plate via the breach set up in the second end is kept away from one side of first sealing member, and along the perpendicular to in the direction of the tank bottom wall of recess, the part of stiffening plate with butt portion butt.

8. The key structure of claim 2,

the shell is further provided with a wire passing groove located on one side of the first surface, the key hole is communicated with the groove through the wire passing groove, and part of the circuit board is arranged on the groove wall of the wire passing groove.

9. The key structure of claim 8,

the circuit board further comprises a connecting section, the connecting section comprises a first sub-connecting section connected with the first end, a second sub-connecting section connected with the first sub-connecting section and far away from the first end in a bending manner, and a third sub-connecting section connected with the second sub-connecting section and far away from the first sub-connecting section in a bending manner, one end of the third sub-connecting section far away from the second sub-connecting section is connected with the second end, and the third sub-connecting section and the first sub-connecting section are located on the same side of the second sub-connecting section;

the wire passing groove comprises a first section communicated with the key hole, a second section connected with the first section in a bending mode, and a third section connected with the second section in a bending mode and communicated with the groove;

the first sub-connecting section is arranged corresponding to the first section, the second sub-connecting section is arranged corresponding to the second section, and the third sub-connecting section is arranged corresponding to the third section.

10. The key structure of claim 8,

the key structure further comprises a second sealing element, and the second sealing element is arranged on the first surface and covers the notch of the wire passing groove and the notch of the groove.

11. The key structure of claim 1,

the shell is further provided with a bonding surface for being attached to a battery cover of the electronic equipment, and the key structure further comprises a third sealing element, wherein the third sealing element is arranged on the bonding surface and used for sealing a gap between the battery cover and the shell.

12. An electronic device, characterized in that it comprises a key structure according to any one of claims 1-11.