CN214150892U - Electronic equipment - Google Patents

Abstract

The application discloses electronic equipment adds the bridging subassembly in the direction of can pressing of metal button, and when the metal button was pressed by the finger, the bridging subassembly was close the inductive circuit intercommunication with the human body on metal button and the circuit board, forms induction capacitance between finger and the metal button, and this application is equivalent to multiplexing metal button and regards as SAR sensor electrode, need not to change electronic equipment's antenna structure and metal casing to can not influence electronic equipment's antenna design and structural strength.

Description

Electronic equipment

Technical Field

The application relates to the technical field of electromagnetic radiation detection, in particular to an electronic device.

Background

Some electronic devices may cause electromagnetic damage to a human body approaching due to the use of antenna transmission power, and have certain standards for measured values of SAR (electromagnetic wave Absorption ratio) in various countries.

The SAR Sensor is realized by connecting an SAR chip (SAR Sensor IC) to an SAR Sensor Pad (electromagnetic wave absorption ratio Sensor electrode), when a human finger touches the SAR Sensor electrode, an induction capacitor is formed between the finger and the SAR Sensor electrode, and the SAR chip detects the electric quantity of the induction capacitor, namely, the human body is judged to be close, and the antenna emission power is reduced.

The SAR sensor electrode must be an ungrounded metal, which limits the structural design of the antenna of the electronic device, and in order to ensure the communication quality, the metal housing of the electronic device is almost reused as the antenna, which affects the structural strength of the electronic device if a metal piece near the antenna and ungrounded is additionally reserved from the metal housing.

Disclosure of Invention

In view of this, the present application provides an electronic device to solve the problem that the design of the conventional SAR sensor electrode is not favorable for the antenna design and the structural strength of the electronic device.

The application provides an electronic equipment, includes:

a metal key;

a circuit board provided with a human body approach sensing circuit;

the bridging component is arranged on the metal key in the pressing direction and is used for communicating the human body approach sensing circuit with the metal key in the pressing state.

Optionally, the circuit board includes a main circuit board and a sub circuit board that are connected, the sub circuit board is disposed adjacent to the metal key, and the bridge component is disposed on a side of the sub circuit board facing the metal key.

Optionally, the sub circuit board is provided with a sensing signal area, and the sensing signal area is communicated with the main circuit board.

Optionally, a human body proximity sensing chip is arranged on the main circuit board and is communicated with the sensing signal area.

Optionally, the bridge assembly includes a first bridge and a second bridge, the metal casing of the electronic device adjacent to the metal key is provided with an extension portion, the second bridge is provided on one side of the extension portion facing the metal key, the metal key in a pressed state abuts against the second bridge, the second bridge presses the extension portion to contact with the first bridge, and the first bridge is communicated with the circuit board.

Optionally, the second bridge includes a supporting plate fixed to the extending portion, and an inclined portion having one end fixed to the supporting plate at an acute angle and the other end facing the protruding portion of the metal key, and the protruding portion of the metal key in a pressed state abuts against the inclined portion.

Optionally, the second bridge includes two inclined portions disposed on the support plate at an opposite interval, the protruding portion of the metal key in a pressed state is sandwiched between the two inclined portions, and a distance between the two inclined portions when the protruding portion of the metal key is not in contact with the protruding portion is smaller than a radial dimension of the protruding portion.

Optionally, the inclined part is a structural member having an uneven cross section.

Optionally, a groove is formed in a plastic housing of the electronic device, the protrusion of the metal key extends into the groove, the extension is assembled with the plastic housing and serves as a groove bottom of the groove, a buffer member is arranged at the groove bottom, and the second bridge member is arranged in the groove and located on the buffer member.

Optionally, the size of one end of the buffer member facing the extending portion is smaller than that of the other end, and the electronic device further includes a conductive adhesive filled between the buffer member and the extending portion.

Based on the aforesaid, this application adds the bridging subassembly in the direction of can pressing of metal button, and when the metal button was pressed by the finger, the bridging subassembly intercommunication metal button was close induction circuit with the human body, forms induction capacitance between finger and the metal button, and is visible, and this application is equivalent to multiplexing metal button as SAR sensor electrode, need not to change electronic equipment's antenna structure and metal casing to can not influence electronic equipment's antenna design and structural strength.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

FIG. 2 is a structural cross-sectional view of the electronic device shown in FIG. 1 along A-A in the bezel area;

FIG. 3 is a top view of the electronic device in the bezel area of FIG. 2;

FIG. 4 is a schematic diagram of the structure of the daughter circuit board shown in FIG. 2;

FIG. 5 is a schematic view of a first bridge according to an embodiment of the present application;

FIG. 6 is a partial structural schematic of the dashed area shown in FIG. 3;

FIG. 7 is a schematic diagram of an implementation of the SAR sensor of the present application;

FIG. 8 is a cross-sectional view of the electronic device shown in FIG. 1 in a frame area along the direction B-B;

FIG. 9 is a top view of the electronic device in the bezel area shown in FIG. 8;

fig. 10 is a schematic structural view of the sub circuit board shown in fig. 8.

Detailed Description

The technical solutions in the embodiments of the present application are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Without conflict, the various embodiments and their technical features described below may be combined with each other and constitute other embodiments.

It should be understood that in the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the technical solutions of the embodiments and simplifying the description, but do not indicate or imply that the devices or elements must have specific orientations, be constructed in specific orientations, and be operated, and therefore, should not be construed as limiting the scope of the present application.

The embodiment of the application provides electronic equipment, and a multiplexing metal key is used as an SAR sensor electrode, so that the antenna structure and the metal shell of the electronic equipment are not required to be changed.

The electronic device according to the embodiment of the present application may be implemented by using various different types of terminals. These terminals may be mobile devices such as smart phones, Digital broadcast terminals, PDAs (Personal Digital assistants or tablet computers), portable multimedia players, navigators, portable computers, and wearable devices with corresponding functions, such as smart watches, smart glasses, Head Mounted Displays (HMDs), which can be worn on limbs or embedded in clothes, jewelry, accessories, and the like.

The electronic device according to the embodiment of the present application is described below by taking the smartphone shown in fig. 1 as an example. Specifically, referring to fig. 1 to 7, the electronic device 10 of the present embodiment includes a housing 11, a metal key 12 assembled with the housing 11 and partially exposed on the housing 11, a circuit board located in the housing 11, and a bridge component 14.

The housing 11 encloses the shape forming the electronic device 10 and defines the appearance thereof. For convenience of description, the embodiments of the present application are arranged in a front-rear orientation, and the housing 11 is generally referred to as a front housing 111, a transparent cover plate, a middle frame 112, and a rear housing (not shown in fig. 1), and various electronic components of the electronic device 10 are disposed in a space formed by assembling the four.

The front housing 111 is not a complete plate but a window is opened in the middle, so the front housing 111 can be also called as a front frame 111. The front frame 111 is pressed on the transparent cover plate and covers the frame area of the display panel 15, so as to form a front frame 151 of the electronic device 10, and the display area of the electronic device 10 is exposed through a window opened in the front frame 111, so as to define a display interface of the electronic device 10. The middle frame 112 is interposed between the front case 111 and the rear case, and assembled with the front case and the rear case, and the middle frame 112 serves as a side frame of the electronic apparatus 10.

In the case of the electronic device 10 using the full-screen technology, the front frame 111 is not provided, and a transparent cover plate covers and protects the display panel 15, and the transparent cover plate is fixed to the middle frame 112, for example, by being bonded by a transparent optical Adhesive (OCA).

In one implementation, the middle frame 112 may be a fabricated structure, as shown in fig. 2 and 3, and is fabricated by, for example, assembling a metal housing 112a and a plastic housing 112 b.

The metal housing 112a is provided with an accommodating space 112c for accommodating corresponding components of the electronic device 10. The metal housing 112a is provided with an extension 112d outside the accommodating space 112 c.

The plastic case 112b and the metal case 112a are assembled to form a groove 112e, and the extension portion 112d is assembled with the plastic case 112b to serve as a groove bottom of the groove 112 e.

The assembled middle frame 112 is provided with a key mounting area for mounting the metal key 12.

The metal key 12 includes a main body 121, and a first protrusion 122 and a second protrusion 123 provided on the main body 121 and facing the middle frame 112. The main body 121 is exposed from the middle frame 112, and the first protrusion 122 and the second protrusion 123 are fitted into the middle frame 112.

The first protrusion 122 extends toward the groove 112e of the middle frame 112 and is movable back and forth along the course defined by the groove 112 e. The second protruding portion 123 is located on the side of the first protruding portion 122 and extends toward the extending portion 112d of the middle frame 112.

When the finger presses the main body portion 121, the first protrusion 122 is driven to move toward the groove bottom of the groove 112e, as shown by the arrow in fig. 3, and finally contacts a Key Switch (Key Switch)124 of the electronic device 10, and the Key Switch 124 generates and transmits a signal to a sub circuit board 132 of the circuit board to detect the occurrence of a pressing event of the metal Key 12. In the process, the second protrusion 123 moves synchronously towards the bridge element 14 in the direction x shown in fig. 3.

The sub-circuit board 132 of the circuit board is placed in the accommodating space 112c of the housing 11. Specifically, the circuit board includes a main circuit board 131 and a sub circuit board 132. The sub Circuit board 132 is disposed adjacent to the metal keys 12, and may be regarded as a Circuit board for performing functions of the metal keys 12, such as a Flexible Printed Circuit (FPC). When the metal key 12 is pressed, the sub circuit board 132 detects a signal generated by the pressing and transmits the signal to the main circuit board 131.

To accommodate the structural design of the housing 11, the daughter circuit board 132 includes a vertical portion 132a and a horizontal portion 132b connected as shown in fig. 4. The vertical portion 132a is located in the accommodating space 112c of the middle frame 112, and a sensing element 132c is disposed on a side facing the metal key 12, for contacting the first protrusion 122 of the metal key 12 and generating a pressing signal when the metal key 12 is pressed. The horizontal portion 132b is provided with a plurality of sensing signal areas 132d, and the sensing signal areas 132d are communicated with the main circuit board 131 for transmitting the pressing signal to the main circuit board 131 of the electronic device 10.

Unlike the conventional structure, the sub circuit board 132 of the present embodiment is additionally provided with a sensing signal area 132d for communicating the bridge component 14 and the main circuit board 131. As shown in fig. 4, the additional sensing signal region 132d may be located at the outer end of the horizontal portion 132 b.

The main Circuit Board 131 is a main Board of the electronic device 10, such as a Printed Circuit Board (PCB), and is a control center of the electronic device 10, and is connected to various parts of the electronic device 10 through various interfaces and lines, and executes various functions of the electronic device 10 and processes data by running or loading pre-stored programs and data, so as to implement overall monitoring.

Specifically, in order to implement the SAR Sensor function, a human body proximity sensing chip 133, such as an SAR Sensor IC, is disposed on the main circuit board 131, and is communicated with a sensing signal region 132d of the sub circuit board 132 to form a human body proximity sensing circuit of the circuit board. That is to say, the human body proximity sensing circuit of the embodiment of the present application can be regarded as an SAR sensing circuit.

According to the embodiment of the application, the bridging component 14 is additionally arranged in the pressing direction of the metal key 12, when a finger presses the metal key 12, the bridging component 14 is communicated with the metal key 12 and a human body approach sensing circuit, and the finger and the metal key 12 form a sensing capacitor to detect that the human body approaches.

The bridge assembly 14 includes a first bridge 141 and a second bridge 142.

The first bridge 141 is located in the accommodating space 112c of the housing 11 and is mounted on and connected to the sub-circuit board 132, specifically, located on a side of the sub-circuit board 132 facing the metal key 12. The second bridge 142 is disposed on the extension portion 112d of the middle frame 112, specifically on a side of the extension portion 112d facing the metal key 12.

The first bridge 141 may be an elastic structure, and the embodiment of the present application does not limit its specific structural configuration, and only needs to ensure that it is in good contact with the extending portion 112d of the middle frame 112, so as to avoid the influence of a shaking condition, such as the electronic device 10 falling to the ground, on the contact between the two.

In one implementation, as shown in fig. 5, the first bridge 141 includes a mounting portion 141a and a bridge 141 b. The mounting portion 141a is fixed to the sub circuit board 132. The bridging portion 141b is an obtuse-angled structure, and is connected to the mounting portion 141a at the obtuse-angled vertex thereof, and is rotatable counterclockwise as indicated by the dotted arrow in fig. 5 about the obtuse-angled vertex thereof. Even if the electronic device 10 greatly shakes, the bridge portion 141b can always keep one end in contact with the extending portion 112d of the metal shell 112a, and the bridge component 14 is ensured to have a good bridge effect.

As shown in fig. 6, the second bridge 142 includes a support plate 142a and two inclined portions 142b disposed opposite to each other at a distance. The two inclined portions 142b may be symmetrically disposed. The support plate 142a is fixed to the extension 112d of the middle frame 112. One end of the inclined portion 142b is fixed to the supporting plate 142a at an acute angle, and the other end faces the second protrusion 123 of the metal key 12.

When the metal key 12 is pressed, the second protrusion 123 of the metal key 12 abuts against the inclined portion 142b of the second bridge 142 and presses the support plate 142a, thereby bringing the second bridge 142 into contact with the extension 112d of the middle frame 112. Based on this, the bridging component 14 connects the metal key 12 and the human body proximity sensing circuit of the circuit board, an inductive capacitance C is formed between the finger and the metal key 12, and the human body proximity sensing circuit detects the electric quantity of the inductive capacitance C, that is, determines that the human body is approaching, thereby controlling the electronic device 10 to reduce the antenna transmission power.

When the metal key 12 is not in contact with the second protruding portion 123, the distance between the two inclined portions 142b is smaller than the radial dimension of the second protruding portion 123, and as the pressing proceeds, the second protruding portion 123 is sandwiched between the two inclined portions 142b, the second protruding portion 123 abuts against the two inclined portions 142b, the two inclined portions 142b receive the friction force with the second protruding portion 123, the included angle between the two inclined portions 142b and the supporting plate 142a is increased, the damping effect is realized, and the key pressing experience of the user can be improved.

Furthermore, the inclined portion 142b is a structural member having an uneven cross section, and can increase the frictional force between the inclined portion and the second protruding portion 123, thereby improving the damping body feeling of the key.

Based on the above, in the embodiment of the present application, the multiplexing metal key 12 is used as the SAR sensor electrode, and the antenna structure and the metal housing of the electronic device 10 do not need to be changed, so that the antenna design and the structural strength of the electronic device 10 are not affected.

Referring to fig. 2 and fig. 6, for the metal key 12 with waterproof and damping functions, the electronic device 10 may be provided with a buffer 125 and a conductive adhesive (not shown). The buffer 125 is disposed at the bottom of the groove 112e, one end of the buffer 125 facing the extending portion 112d is smaller than the other end, and the conductive adhesive is filled between the buffer 125 and the extending portion 112 d. The second bridge 142 of the bridge assembly is disposed on the buffer 125.

In the foregoing embodiment, the metal key 12 may be a volume key of a smart phone. In other embodiments of the present application, the electronic device 10 may also be multiplexed with other types of metal keys 12 to implement SAR sensor electrodes, such as the power keys shown in fig. 8 and 9.

The embodiments of the present application use the same reference numerals to identify structural elements having the same name. Referring to fig. 1, 8 and 9, the metal key 12 is provided with a second protrusion 123, and correspondingly, as shown in fig. 10, the sub circuit board 132 is provided with a sensing element 132 c.

In addition, the buffer 125 and the conductive paste may not be provided in this embodiment. The second bridge 142 may be provided with only one inclined portion 142 b.

It should be understood that the structural designs described in fig. 1 to 10 are merely exemplary, the electronic device 10 and the specific structural configuration thereof are not limited thereto, and the present application also has other embodiments, in which a bridging component 14 is added in the depressible direction of the metal key 12, when the metal key 12 is depressed by a finger, the bridging component 14 communicates the metal key 12 and the human body proximity sensing circuit, and the finger and the metal key 12 form a sensing capacitor to detect the approach of the human body. Here, the metal keys 12 may be multiplexed as the SAR sensor electrodes, and the antenna structure and the metal case of the electronic device 10 do not need to be changed, so that the antenna design and the structural strength of the electronic device 10 may not be affected.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element, and that elements, features, or elements having the same designation in different embodiments may or may not have the same meaning as that of the other elements, and that the particular meaning will be determined by its interpretation in the particular embodiment or by its context in further embodiments.

In addition, although the terms "first, second, third, etc. are used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, depending on the context, without departing from the scope herein. The term "if" can be interpreted as "at … …" or "when … …" or "in response to a determination". Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. The terms "or" and/or "are to be construed as inclusive or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.

Although the application has been shown and described with respect to one or more implementations, equivalent alterations and modifications will occur to others skilled in the art based upon a reading and understanding of this specification and the annexed drawings. The present application includes all such modifications and variations, and is supported by the technical solutions of the foregoing embodiments. That is, the above-mentioned embodiments are only some of the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent structural changes made by using the contents of the present specification and the drawings, such as the combination of technical features between the embodiments, or the direct or indirect application to other related technical fields, are included in the scope of the present application.

Claims (10)

1. An electronic device, comprising:

a metal key;

a circuit board provided with a human body approach sensing circuit;

and the bridging component is arranged in the pressing direction of the metal key and is used for communicating the human body approach sensing circuit with the metal key in a pressing state.

2. The electronic device of claim 1, wherein the circuit board comprises a main circuit board and a sub circuit board in communication, the sub circuit board is disposed adjacent to the metal key, and the bridge component is disposed on a side of the sub circuit board facing the metal key.

3. The electronic device of claim 2, wherein the sub circuit board is provided with a sense signal region, the sense signal region being in communication with the main circuit board.

4. The electronic device of claim 3, wherein the main circuit board is provided with a human body proximity sensing chip, which is communicated with the sensing signal area.

5. The electronic device according to any one of claims 1 to 4, wherein the bridge assembly includes a first bridge and a second bridge, the electronic device is provided with an extending portion adjacent to the metal shell of the metal key, the second bridge is provided on a side of the extending portion facing the metal key, the metal key in a pressed state abuts against the second bridge, the second bridge presses the extending portion and brings the extending portion into contact with the first bridge, and the first bridge is communicated with the circuit board.

6. The electronic device according to claim 5, wherein the second bridge member includes a support plate fixed to the extension portion and an inclined portion having one end fixed to the support plate at an acute angle and the other end facing the protruding portion of the metal key, the protruding portion of the metal key in the pressed state abutting against the inclined portion.

7. The electronic device according to claim 6, wherein the second bridge includes two inclined portions disposed on the support plate at an interval, the protruding portion of the metal key in a pressed state is sandwiched between the two inclined portions, and a distance between the two inclined portions when not in contact with the protruding portion of the metal key is smaller than a radial dimension of the protruding portion.

8. The electronic apparatus according to claim 6, wherein the inclined portion is a structural member having an uneven cross section.

9. The electronic device of claim 5, wherein a plastic housing of the electronic device is provided with a groove, wherein the protrusion of the metal key extends into the groove, wherein the extension is assembled with the plastic housing and serves as a groove bottom of the groove, wherein the groove bottom is provided with a buffer, and wherein the second bridge is disposed in the groove and located on the buffer.

10. The electronic device of claim 9, wherein a dimension of the buffer member towards one end of the extension portion is smaller than a dimension of the other end of the extension portion, and the electronic device further comprises a conductive adhesive filled between the buffer member and the extension portion.

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