Folding electronic equipment

Abstract

The invention discloses a folding electronic device. The folding electronic equipment is provided with a first loudspeaking unit and a second loudspeaking unit, and is provided with a first sound guide channel and a second sound guide channel which are mutually independent. The first sound guide channel comprises a first sound outlet hole, the second sound guide channel comprises a second sound outlet hole, and the first sound outlet hole and the second sound outlet hole are opposite to each other, so that when the folding electronic equipment is in an unfolded state, sound emitted by the first loudspeaking unit is emitted outwards from the first sound outlet hole through the first sound guide channel; when the folding type electronic equipment is in the folding state, sound emitted by the second loudspeaking unit is emitted from the second sound outlet hole through the second sound guide channel, so that downlink calls do not influence each other in the folding state or the opening state, and the privacy of the folding type electronic equipment without the downlink calls can be improved.

Description

Technical Field

[0001] The present application relates to electronic devices, and in particular to foldable electronic devices. Background Art

[0002] Nowadays, foldable electronic devices (such as foldable mobile phones) are widely used by women because they are only half the size of traditional mobile phones when folded. However, due to the light and thin requirements of such foldable products, only one speaker is usually placed on the top, and the opening is only on the screen side. Therefore, to answer a call, you need to open the foldable phone to realize the call function. In order to meet the stereo music external speaker effect, some models will open a hole in the top of the middle frame to improve the external speaker effect. The opening is connected to the top speaker, so the sound will leak from the opening, causing the sound of the handheld call to leak, and the privacy of the downlink call is poor. Summary of the invention

[0003] The purpose of the present application is to disclose a foldable electronic device that can improve the privacy of downlink calls in a folded state and an unfolded state.

[0004] The present application discloses a foldable electronic device. The foldable electronic device includes a first part and a second part, and the first part and the second part realize a foldable screen through a hinge mechanism; the screen is foldable and includes a first screen and a second screen. The first part includes the first screen, a back cover opposite to the first screen, a first speaker unit, a second speaker unit, a first sound guide channel with a first sound outlet hole, and a second sound guide channel with a second sound outlet hole; the first sound guide channel and the second sound guide channel are independent, and the first sound outlet hole and the second sound outlet hole are respectively located on the screen side and the back cover side, and are both located at the edge of the first part. The foldable electronic device includes a sensor arranged on the first part or the second part and a processor arranged on the first part or the second part, and the sensor is used to detect whether the first part and the second part are in an unfolded state or a folded state. The processor controls the first speaker unit and / or the second speaker unit to make sound according to the state detected by the sensor and the current function of the foldable electronic device being a handheld call function. The sound of the first speaker unit is transmitted from the first sound outlet hole to the outside of the foldable electronic device through the first sound guide channel; the sound of the second speaker unit is transmitted from the second sound outlet hole to the outside of the foldable electronic device through the second sound guide channel.

[0005] In some embodiments, the first part includes a first component and a second component, the first component and the second component are located on adjacent sides of the first speaker unit. The first sound guide channel includes a front cavity and a tail channel, the front cavity is located between the diaphragm of the first speaker unit and the first component; the tail channel is connected to the front cavity, is located between the second component and the first screen, and includes the first sound outlet hole.

[0006] In some embodiments, one end of the first component is aligned with an end of the first speaker unit, and a portion covering the diaphragm of the first speaker unit is less than or equal to 1 / 2 of the diaphragm of the first speaker unit.

[0007] In some embodiments, a height of the front cavity along the thickness direction of the foldable device is h, and h≥0.35 mm.

[0008] In some embodiments, h≤0.65 mm.

[0009] In some embodiments, the first sound guide channel includes a first throat, the tail section channel is connected to the front cavity through the first throat, and the first throat extends along the thickness direction of the foldable electronic device so that the tail section channel is lower than the front cavity.

[0010] In some embodiments, the height of the first throat portion is a, 0.6 mm ≤ a ≤ 1 mm, and / or the first throat portion is formed by punching a hole in a middle frame assembly of the foldable electronic device.

[0011] In some embodiments, the second sound guide channel includes a first section channel, a second section channel and a third section channel. The first section channel extends in a direction parallel to the first screen and is generally a straight channel. The first end of the second section channel is connected to the first section channel and is inclined toward the first screen relative to the first section channel. The third section channel is connected to the other end of the second section channel, is inclined toward the edge of the back cover located at the first part relative to the second section channel, and has the second sound outlet hole.

[0012] In some embodiments, the second section of the channel is inclined at an angle b relative to the first section of the channel, and b≤25 degrees.

[0013] In some embodiments, the second section of the channel is connected to the first section of the channel to form a second throat portion, and a height of the second throat portion along the thickness direction of the foldable electronic device is t, 0.6mm≤t≤1mm.

[0014] In some embodiments, the first part includes a support member, and the support member and the second speaker unit are assembled into a component. The first section of the channel is formed between the support member and the diaphragm of the second speaker unit; the support member is provided with the second section of the channel. The foldable electronic device includes a second component located between the second speaker unit and the edge of the first part, the second component is sealed with the support member, and is provided with the third section of the channel.

[0015] In some embodiments, the first speaker unit and the second speaker unit are assembled into a double-diaphragm speaker, and along a direction parallel to the first screen, a distance between an inner core of the double-diaphragm speaker and an edge of the first part is d, and d≤2 mm.

[0016] In some embodiments, the diaphragm of the first speaker unit and the diaphragm of the second speaker unit are arranged opposite to each other.

[0017] In some embodiments, the first part includes a secondary screen and a first microphone, the secondary screen and the back cover are opposite to the first screen, and the first microphone picks up sound through an assembly gap between the secondary screen and the back cover.

[0018] In some embodiments, along a direction parallel to the secondary screen, a length of the first portion relative to the rotating shaft mechanism is C, a distance between the first microphone and the rotating shaft mechanism is c, and c≤C / 2.

[0019] In some embodiments, the first part and the second part are folded up and down relative to the hinge mechanism; the foldable electronic device includes a second microphone located at the top edge of the first part and a third microphone located at the bottom edge of the second part, and the second microphone and the third microphone are used to judge the sound field.

[0020] In some embodiments, when the first part and the second part are in the unfolded state, an angle between a line between the second microphone and the third microphone and a perpendicular bisector of the foldable electronic device is e, and 0 degrees ≤ e ≤ 10 degrees.

[0021] In some embodiments, the assembly gap between the secondary screen and the back cover includes a first gap and a second gap relative to each other, the second gap is located closer to the edge of the first part than the first gap, and the first microphone picks up sound through the first gap.

[0022] In some implementations, a distance between the first microphone and a perpendicular bisector of the foldable electronic device is f, where f≤3 mm.

[0023] In some embodiments, the foldable electronic device includes a first power amplifier and a switching switch, wherein the first power amplifier is connected to the processor and the switching switch; the switching switch is also connected to the processor, and the processor controls the switching switch to switch to the first speaker unit or the second speaker unit according to the state detected by the sensor.

[0024] In some embodiments, the foldable electronic device includes a second power amplifier and a lower speaker unit, the second power amplifier is connected to the processor and the lower speaker unit, and the lower speaker unit is arranged in the second part; the processor also controls the lower speaker unit to make sound when the foldable electronic device performs the function of hands-free calling or external speaker.

[0025] In the above-mentioned foldable electronic device, the sensor detects the state of the foldable electronic device. When the first part and the second part are in the unfolded state, the state detected by the sensor is the unfolded state. The processor controls the first speaker unit to emit sound according to the unfolded state and the function currently executed by the foldable electronic device, which is the handheld call function. In addition, the first speaker unit and the first sound guide channel and the second speaker unit and the second sound guide channel are independent and do not affect each other. Therefore, the sound of the first speaker unit will not be emitted from the second sound outlet hole. In addition, the first sound outlet hole is located on the screen side and at the edge of the first part, close to the human ear, without a hole in the top of the middle frame. The sound will not leak from the hole in the top of the middle frame, thereby avoiding sound leakage. , when the foldable electronic device is in the unfolded state, it can prevent the downward sound from leaking and being heard by people nearby, thereby improving privacy; in the same way, when the foldable electronic device is in the folded state, the processor controls the second speaker unit to emit sound according to the folded state and the function executed in the folded state for the handheld call function. The sound of the second speaker unit cannot be emitted from the first sound outlet but can only be emitted from the second sound outlet through the second sound guide channel. The second sound outlet is located on the side of the back cover and on the edge of the first part, close to the human ear, without opening a hole at the top of the middle frame, and the sound will not leak from the opening at the top of the middle frame. Therefore, when the foldable electronic device is in the folded state, it can also prevent the downward sound from leaking and being heard by people nearby, thereby improving privacy. When both the first speaker unit and the second speaker unit emit sound, the first speaker unit can be made to adopt a cancellation method and combined with the positions of the first sound outlet and the second sound outlet, and there is no need to open a hole at the top of the middle frame, so that the sound will not leak from the opening at the top of the middle frame, thereby improving privacy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a partial cross-sectional view of a foldable electronic device according to an embodiment of the present application;

[0027] Figure 2is a schematic diagram showing a foldable electronic device in an unfolded state according to an embodiment of the present application, illustrating the screen side;

[0028] Figure 3 is a schematic diagram showing a foldable electronic device in an open state according to an embodiment of the present application, illustrating a rear cover side;

[0029] Figure 4 is a schematic diagram showing a foldable electronic device in a folded state according to an embodiment of the present application, illustrating a rear cover side;

[0030] Figure 5 is a control circuit diagram according to an embodiment of the present application. DETAILED DESCRIPTION

[0031] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices consistent with some aspects of the present application as detailed in the appended claims.

[0032] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantitative limit, but indicate that there is at least one. "Multiple" or "several" means two or more. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. The singular forms "a", "said" and "the" used in this specification and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0033] See also Figure 1 Combined with Figure 2 , Figure 3 and Figure 4 The present application discloses a foldable electronic device, which includes a first part 1 and a second part 2. The first part 1 and the second part 2 realize the foldable screen 4 through a hinge mechanism 3. The screen 4 is foldable and includes a first screen 41 and a second screen 42. It should be noted that although the screen 4 includes the first screen 41 and the second screen 42, the screen 4 is still a complete screen, and its unfolded state is as shown in FIG. Figure 2 As shown, they are named as the first screen 41 and the second screen 42 just for the convenience of description. Figure 2 , Figure 3 and Figure 4 The hinge mechanism 3 is marked with a dotted line to illustrate the hinge mechanism 3. In summary, the first part 1, the second part 2, the hinge mechanism 3 and the screen 4 can be understood based on existing foldable electronic devices, such as foldable mobile phones, but not limited to mobile phones.

[0034] See also Figure 1 Combined with Figure 2 , Figure 3 and Figure 4 , the first part 1 includes the first screen 41, the back cover 11 (such as a battery cover) opposite to the first screen 41, the first speaker unit 12, the second speaker unit 13, the first sound guide channel 14 with a first sound outlet hole 140, and the second sound guide channel 15 with a second sound outlet hole 150. The first sound guide channel and the second sound guide channel are independent (that is, the two are not connected). The first sound outlet hole 140 is located on the side of the first screen 41, and the second sound outlet hole 150 is located on the side of the back cover 11. That is to say, the first sound outlet hole 140 is located on the front side of the foldable electronic device, and the second sound outlet hole is located on the back side of the foldable electronic device. In this way, the positional relationship between the first sound outlet hole 140 and the second sound outlet hole 150 includes: 1) Comparison Figure 2 and Figure 3 , the two are arranged correspondingly and facing each other; 2) they are not arranged correspondingly but have a distance difference along the edge of the first part, but the first sound outlet 140 is located on the front side and the second sound outlet 150 is located on the back side, and the two are still arranged facing each other. The first sound outlet 140 and the second sound outlet 150 are both located on the edge of the first part 1. In some embodiments, see Figure 2 The first sound outlet hole 140 is a narrow slit, and its width is, for example, greater than 0.45 mm. Figure 3 and Figure 4The second sound outlet hole 150 is also a narrow slit, and the recommended width is 0.2-0.3 mm. It can be used only for temporary handheld calls without Pass RLR MAX, and objectively meets RLR Nom 2db.

[0035] See also Figure 5 , the foldable electronic device includes a sensor 5 and a processor 6. The sensor 5 is used to detect whether the first part 1 and the second part 2 are in an unfolded state or a folded state. Based on this function, there is no limit on how the sensor 5 is set and on what component it is set, as long as the aforementioned function can be achieved. For example, the sensor 5 is set in the first part 1, and can also be set in the second part 2. The processor 6 controls the first speaker unit 12 or the second speaker unit 13 to make a sound according to the state detected by the sensor 5 and the current function of the foldable electronic device is a handheld call function. The sound of the first speaker unit 12 is transmitted from the first sound outlet 140 to the outside of the foldable electronic device through the first sound guide channel 14; the sound of the second speaker unit 13 is transmitted from the second sound outlet 150 to the outside of the foldable electronic device through the second sound guide channel 15. Combined with Figure 5 As well as the following table, understand the state of the foldable electronic device (that is, the state of the first part 1 and the second part 2), the functions implemented, and the relationship between the related components:

[0036]

[0037] It should be noted that: although the table shows the second power amplifier 72 and the lower speaker unit 9, in some embodiments, these components may not be provided. In addition, the first speaker unit 12 and the second speaker unit 13 may not share the first power amplifier 71 and the switch 8, etc.

[0038] As described above, the sensor 5 detects the state of the foldable electronic device. When the first part 1 and the second part 2 are in the unfolded state, the state detected by the sensor 5 is the unfolded state. The processor 6 controls the first speaker unit 12 to make a sound according to the unfolded state and the function currently performed by the foldable electronic device, which is the handheld call function. In addition, the first speaker unit 12 and the first sound guide channel 14 and the second speaker unit 13 and the second sound guide channel 15 are independent, so the sound of the first speaker unit 12 will not be emitted from the second sound outlet 150. In addition, the first sound outlet 140 is located on the screen side and at the edge of the first part 1, close to the human ear, without opening a hole on the top of the middle frame (such as Figure 1The sound will not leak from the opening at the top of the middle frame, so that sound leakage is avoided. Therefore, when the foldable electronic device is in the unfolded state, downward sound leakage can be avoided and heard by nearby people, thereby improving privacy. For the same reason, when the foldable electronic device is in the folded state, the processor 6 controls the second speaker unit 13 to emit sound according to the folded state and the function executed in the folded state for the handheld call function. The sound of the second speaker unit 13 cannot be emitted from the first sound outlet 140 but can only be emitted from the second sound outlet 150 through the second sound guide channel 15. The second sound outlet 150 is located on the back cover side and at the edge of the first part 1, close to the human ear, without the opening at the top of the middle frame. The sound will not leak from the opening at the top of the middle frame. Therefore, when the foldable electronic device is in the folded state, downward sound leakage can be avoided and heard by nearby people, thereby improving privacy.

[0039] In the above embodiment, one of the first speaker unit 12 and the second speaker unit 13 emits sound. In some embodiments, the first speaker unit 12 and the second speaker unit 13 can emit sound at the same time. In this embodiment, the positions of the first sound outlet 140 and the second sound outlet 150 are the same as those described above, but the control method is different. Therefore, compared with the method of opening a hole at the top of the middle frame, because there is no hole at the top of the middle frame, the sound can only be emitted from the first sound outlet 140 and the second sound outlet 150, which can also improve privacy. It can be understood that the processor controls the first speaker unit and / or the second speaker unit to emit sound according to the state detected by the sensor and the current function of the foldable electronic device is the hand-held call function, which means that the processor controls the first speaker unit to emit sound according to the state detected by the sensor and the current function of the foldable electronic device is the hand-held call function, the processor controls the second speaker unit to emit sound according to the state detected by the sensor and the current function of the foldable electronic device is the hand-held call function, or the processor controls the first speaker unit and the second speaker unit to emit sound according to the state detected by the sensor and the current function of the foldable electronic device is the hand-held call function. It should be noted that the above three sound emission conditions are not limited to being simultaneously available in one electronic device in this application.

[0040] Based on the role played by the above-mentioned first sound guide channel 14, its configuration and related structure are not limited. As follows, in combination with relevant drawings, the structure of the first sound guide channel 14 of the present application is described.

[0041] See also Figure 1 The first part 1 includes a first component 111 and a second component 112. The structures of the first component 111 and the second component 112 are not limited, for example, both are part of the middle frame assembly. The first component 111 and the second component 112 are located on adjacent sides of the first speaker unit 12. Figure 1In the embodiment, the first component 111 is located at the lower side of the first speaker unit 12, and the second component 112 is located at the left side of the first speaker unit 12. The first sound guide channel 14 includes a front cavity 141 and a rear channel 142, and the front cavity 141 is located between the first speaker unit 12 and the first component 111. The rear channel 142 is connected to the front cavity 141, is located between the second component 112 and the first screen, and includes the first sound outlet hole 140.

[0042] As described above, since the front cavity 141 is located between the first speaker unit 12 and the first component 111, the tail section channel 142 is connected to the front cavity 141, is located between the second component 112 and the first screen, and includes the first sound outlet 140. In this way, the space between the middle frame assembly and the diaphragm of the first speaker unit 12 can be used to form the front cavity 141, and the gap between the screen and the middle frame assembly can be used to form the tail section channel 142. There is no need to open a hole on the top of the middle frame to form the first sound outlet 140, and the thickness of the foldable electronic device is relatively small.

[0043] See also Figure 1 One end of the first component 111 is aligned with the end of the first speaker unit 12, and the portion of the diaphragm of the first speaker unit 12 that is blocked is less than or equal to 1 / 2 of the diaphragm of the first speaker unit to form the front cavity 141, with reference to Figure 1 It can be understood that the other end of the first component 111 does not exceed the symmetry center line L0 of the diaphragm (first diaphragm 121 ) of the first speaker unit 12 .

[0044] As configured above, since the portion of the diaphragm of the first speaker unit 12 blocked by the first component 111 is less than or equal to 1 / 2 of the diaphragm of the first speaker unit to form the front cavity 141, the airflow flows smoothly to the first sound outlet 140, and the call effect is good; it can also reduce the distortion and noise of music playback and hands-free calls.

[0045] See also Figure 1 The height of the front cavity 141 along the thickness direction of the foldable device is h, and h≥0.35mm.

[0046] As set above, since h≥0.35mm, the sound of pipeline airflow can be reduced or eliminated, and the sound output effect is better. Therefore, too small airflow will pass through a small and slender pipeline, resulting in pipeline airflow sound.

[0047] Continue to see Figure 1 , h≤0.65mm, combined with the above, we can get 0.35mm≤h≤0.65mm. If h is too large, it will cause the frequency response and high-frequency cutoff frequency to move forward, and occasionally cause the high-frequency sensitivity and bandwidth to decrease. 0.35≤h≤0.65mm can avoid or reduce the above problems.

[0048] See also Figure 1 The first sound guide channel 14 includes a first throat 1421. The tail channel 142 is connected to the front cavity 141 through the first throat 1421, and the first throat 1421 extends along the thickness direction of the foldable electronic device so that the tail channel 142 is lower than the front cavity 141.

[0049] As configured above, the front cavity 141 is connected by the first throat 1421 extending along the thickness direction of the foldable electronic device, and the tail end channel 142 is lower than the front cavity 141, which makes it easier for the first component 111 to block the portion of the diaphragm of the first speaker unit 12 that does not exceed 1 / 2 of the diaphragm of the first speaker unit, thereby achieving the beneficial effects of the front cavity 141.

[0050] In some embodiments, the first throat portion 1421 is formed by punching a hole in the middle frame assembly of the foldable electronic device. In other words, the first component 111 and the third component 113 are formed by punching a hole in the middle frame assembly, and the first throat portion 1421 at least includes a portion between the first component 111 and the third component 113.

[0051] As configured above, the first throat portion 1421 utilizes the gap between the middle frame assembly and the screen, so the thickness of the foldable electronic device is small.

[0052] See also Figure 1 , the height of the first throat portion 1421 is a, 0.6mm≤a≤1mm.

[0053] As set above, 0.6mm≤a≤1mm, the airflow noise can be reduced and the sound effect is better.

[0054] Technicians can also understand that based on the function of the second sound guide channel 15, the structure of the second sound guide channel 15 is not limited. As follows, in conjunction with the accompanying drawings, the structure of the second sound guide channel 15 in the implementation manner of the present application is described.

[0055] See also Figure 1 , the second sound guide channel 15 includes a first channel 151, a second channel 152 and a third channel 153. The first channel 151 extends in a direction parallel to the first screen 41 and is generally a straight channel. The generally straight channel means that the first channel 151 is a straight channel as a whole, but due to the necessary structure of other components, there is a certain curvature, for example, Figure 1In the embodiment, the first section channel 151 has a certain curvature because the diaphragm 131 of the second speaker unit 13 needs to include the protrusion 132. The first end of the second section channel 152 is connected to the first section channel 151 and is inclined toward the first screen 41 relative to the first section channel 151. The third section channel 153 is connected to the other end of the second section channel 152, extends toward the end of the rear cover 11 located at the first part 1 relative to the second section channel 152, and has the second sound outlet 150.

[0056] As configured above, since the first section channel 151 is roughly a straight channel, the second section channel 152 is connected to the first section channel 151, and is inclined toward the first screen 41 relative to the first section channel 151. In combination with the second section channel 152 being connected to the other end of the second section channel 152, and being inclined toward the end of the back cover 11 located at the first part 1 relative to the second section channel 152, the thickness of the foldable electronic device is relatively small.

[0057] In some embodiments, the second section of the channel 152 is inclined relative to the first section of the channel 151 at an angle b, where b≤25 degrees.

[0058] As set above, since b≤25 degrees, it is not only beneficial to reduce the thickness of the foldable electronic device, but also the sound can be transmitted smoothly from the first section channel 151 to the second section channel 152.

[0059] See also Figure 1 The second section of the channel 152 is connected to the first section of the channel 151 to form a second throat portion 154, and the height of the second throat portion 154 along the thickness direction of the foldable electronic device is t, 0.6mm≤t≤1mm.

[0060] As set above, since 0.6mm≤t≤1mm, the airflow noise is small and the sound effect is better.

[0061] See also Figure 1 The first part 1 includes a support member 16, and the support member 16 and the second speaker unit 13 form an assembly. The support member 16 and the diaphragm of the second speaker unit 13 form the first section channel 151; the support member 16 is provided with the second section channel 152. The foldable electronic device includes a second component 112 located between the second speaker unit 13 and the edge of the first part 1, the second component 112 is sealed with the support member 16, and is provided with the third section channel 153. The second component 112 is part of the middle frame assembly.

[0062] As described above, the support member 16 is used, and the support member 16 and the second speaker unit 13 are assembled, and the first channel section 151, the second channel section 152 and the third channel section 153 are constructed accordingly, which is convenient for manufacturing the foldable electronic device. For example, it is only necessary to use a seal 161 to seal the second component 112 and the support member 16 to prevent sound leakage. The sealing is convenient and the foldable electronic device is easy to manufacture. In addition, the above-mentioned setting uses some existing components to set the corresponding first channel section 151, the second channel section 152 and the third channel section 153, which is also conducive to reducing the thickness of the foldable electronic device.

[0063] See also Figure 1 The first speaker unit 12 and the second speaker unit 13 are assembled into a dual-diaphragm speaker, and any components can be used to assemble the first speaker unit 12 and the second speaker unit 13 into a dual-diaphragm speaker. The technician can understand that the dual-diaphragm speaker includes the support member 16, etc. Along the direction of the first screen 41, the distance between the core of the dual-diaphragm speaker and the edge of the first part 1 is d, d≤2mm. The core includes a voice coil, a diaphragm of each of the first speaker unit 12 and the second speaker unit 13, etc. Figure 1 It is shown that the diaphragm of the first speaker unit 12 (referred to as the first diaphragm 121 for easy distinction) and the diaphragm of the second speaker unit 13 (referred to as the second diaphragm 131 accordingly) are arranged opposite to each other.

[0064] As set above, since d≤2mm, the inner core is close to the edge of the first part (the top of the middle frame in some embodiments), the first sound guide channel 14 and the second sound guide channel 15 are shorter, the external speaker bandwidth is better, and the sound performance details are richer.

[0065] See also Figure 3 and Figure 4 The first part 1 includes a sub-screen 17 and a first microphone 181. The sub-screen 17 and the back cover 11 are opposite to the first screen 41. The first microphone 181 picks up sound (also called reception) through the assembly gap between the sub-screen 17 and the back cover 11.

[0066] As configured above, since the first microphone 181 picks up sound through the assembly gap between the sub-screen 17 and the back cover 11, a hidden sound pickup method is adopted, which not only improves the refinement of the appearance, but also ensures that the foldable electronic device can effectively pick up sound when it is in a folded state, which is beneficial to improving the privacy of uplink calls. For example, because it can effectively pick up sound, the user's volume does not need to be too loud, because people nearby are not easy to hear the sound and privacy is improved.

[0067] See also Figure 3 and Figure 4 , along the direction parallel to the secondary screen 17, the length of the first part 1 relative to the hinge mechanism 3 is C, the distance between the first microphone 181 and the hinge mechanism 3 is c, c≤C / 2.

[0068] As described above, since c≤C / 2, not only the appearance is refined, but also the first microphone 181 is closer to the human ear in the folded state, and can pick up sound more effectively, thereby improving privacy. In addition, since c≤C / 2 is combined with the second microphone 182 and the third microphone 183, the first microphone 181 is far away from the second microphone 182, improving or even eliminating the risk of call echo.

[0069] See also Figure 2 and Figure 3 and compare it with Figure 4 By comparison, it can be seen that the first part 1 and the second part 2 are folded up and down relative to the hinge mechanism 3; the foldable electronic device includes a second microphone 182 (also called top mic) located at the top edge of the first part 1 and a third microphone 183 (also called bottom mic) located at the bottom edge of the second part 2. The second microphone 182 can be used for picking up sound and reducing noise during handheld calls or hands-free calls when the foldable electronic device is in the unfolded state. The third microphone 183 can also be used for picking up sound and reducing noise during handheld calls or hands-free calls when the foldable electronic device is in the unfolded state.

[0070] As set up as above, by setting up the first microphone 181, the second microphone 182 and the third microphone 183, the three microphones cooperate to achieve Audio Zoom when the first part 1 and the second part 2 are in the unfolded state, and the Audio Zoom effect is good.

[0071] See also Figure 4 When the first part 1 and the second part 2 are in the unfolded state, the angle between the line L1 between the second microphone 182 and the third microphone 183 and the perpendicular bisector L2 of the foldable electronic device is e, 0 degrees ≤ e ≤ 10 degrees.

[0072] As set above, since 0 degrees ≤ e ≤ 10 degrees, combined with the setting of the first microphone 181, when Audio Zoom is implemented, noise can be effectively suppressed during the sound pickup process, thereby achieving a better Audio Zoom effect.

[0073] See also Figure 4 Combined with Figure 3The assembly gap between the secondary screen 17 and the back cover 11 includes a first gap 171 and a second gap 172 relative to each other. The second gap 172 is located closer to the edge of the first part 1 than the first gap 171, and the first microphone 181 picks up sound through the first gap 171.

[0074] As configured above, the first microphone 181 picks up sound through the first gap 171, so the sound pickup effect is better and the AudioZoom effect is also better.

[0075] In some embodiments, the distance between the first microphone 181 and the perpendicular midline L2 of the foldable electronic device is f, and f≤3 mm.

[0076] With the above settings, since f≤3mm, the Audio Zoom effect is better, and the first microphone can be more conveniently placed close to the human ear for better sound pickup.

[0077] See also Figure 5 The foldable electronic device includes a first power amplifier 71 (also known as PA) and a switch 8, wherein the first power amplifier 71 is connected to the processor 6 and the switch 8. The switch 8 is also connected to the processor 6, and the processor 6 controls the switch 8 to switch to the first speaker unit 12 or the second speaker unit 13 according to the state detected by the sensor. Of course, in some embodiments, the first speaker unit 12 may be connected to the processor 6 via a power amplifier, and the second speaker unit 13 may be connected to the processor via another power amplifier.

[0078] As described above, by providing the switching switch 8 and connecting the switching switch 8 to the first power amplifier 71, compared with the first speaker unit 12 and the second speaker unit 13 being connected to a power amplifier respectively, at least one power amplifier can be reduced, thereby reducing costs.

[0079] See also Figure 5 In combination with the above-mentioned table, the foldable electronic device includes a second power amplifier 72 and a lower speaker unit 9, the second power amplifier 72 is connected to the processor 6 and the lower speaker unit 9, and the lower speaker unit 9 is arranged in the second part 2; the processor also controls the lower speaker unit 9 to make sound when the foldable electronic device performs the function of hands-free calling or external speaker (external speaker is not limited to music speaker).

[0080] As configured above, since the foldable electronic device includes the second power amplifier 72 and the lower speaker unit 9 and the first speaker unit 12 and the second speaker unit 13, multiple functions can be achieved through their combination while ensuring privacy.

[0081] The above description is only a preferred implementation mode of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A foldable electronic device, characterized in that: The foldable electronic device comprises a first part and a second part, wherein the first part and the second part realize a foldable screen through a hinge mechanism; the foldable screen comprises a first screen and a second screen; The first part includes the first screen, a back cover opposite to the first screen, a first speaker unit, a second speaker unit, a first sound guide channel having a first sound outlet hole, and a second sound guide channel having a second sound outlet hole; the first sound guide channel and the second sound guide channel are independent, the first sound outlet hole and the second sound outlet hole are respectively located on the screen side and the back cover side, and are both located at the edge of the first part; The foldable electronic device comprises a sensor disposed on the first part or the second part and a processor disposed on the first part or the second part, wherein the sensor is used to detect whether the first part and the second part are in an unfolded state or a folded state; The processor controls the first speaker unit and / or the second speaker unit to make sound according to the state detected by the sensor and the current function of the foldable electronic device being a handheld call function. The sound of the first speaker unit is transmitted from the first sound outlet hole to the outside of the foldable electronic device through the first sound guide channel; the sound of the second speaker unit is transmitted from the second sound outlet hole to the outside of the foldable electronic device through the second sound guide channel.

2. The foldable electronic device according to claim 1, characterized in that: The first portion includes a first component and a second component, wherein the first component and the second component are located at adjacent sides of the first speaker unit; The first sound guide channel includes a front cavity and a tail channel, the front cavity is located between the diaphragm of the first speaker unit and the first component; the tail channel is connected to the front cavity, is located between the second component and the first screen, and includes the first sound outlet.

3. The foldable electronic device according to claim 2, characterized in that: One end of the first component is aligned with an end of the first speaker unit, and a portion covering the diaphragm of the first speaker unit is less than or equal to 1 / 2 of the diaphragm of the first speaker unit.

4. The foldable electronic device according to claim 2, characterized in that: The height of the front cavity along the thickness direction of the foldable device is h, and h≥0.35mm.

5. The foldable electronic device according to claim 4, characterized in that: h≤0.65mm.

6. The foldable electronic device according to claim 2, characterized in that: The first sound guide channel includes a first throat, and the tail section channel is connected to the front cavity through the first throat. The first throat extends along the thickness direction of the foldable electronic device so that the tail section channel is lower than the front cavity.

7. The foldable electronic device according to claim 6, characterized in that: The height of the first throat portion is a, 0.6 mm ≤ a ≤ 1 mm, and / or the first throat portion is formed by punching a hole in a middle frame assembly of the foldable electronic device.

8. The foldable electronic device according to claim 1, characterized in that: The second sound guide channel includes a first channel section, a second channel section and a third channel section; The first section of the channel extends in a direction parallel to the first screen and is substantially a straight channel; The first end of the second section of the channel is connected to the first section of the channel and is inclined toward the first screen relative to the first section of the channel; The third section of the channel is connected to the other end of the second section of the channel, is inclined relative to the second section of the channel toward the edge of the back cover located at the first portion, and has the second sound outlet hole.

9. The foldable electronic device according to claim 8, characterized in that: The second section of the channel is inclined at an angle b relative to the first section of the channel, where b≤25 degrees.

10. The foldable electronic device according to claim 8, characterized in that: The second section of the channel is connected to the first section of the channel to form a second throat portion, and the height of the second throat portion along the thickness direction of the foldable electronic device is t, 0.6mm≤t≤1mm.

11. The foldable electronic device according to claim 8, characterized in that: The first part includes a support member, and the support member and the second speaker unit are assembled into an assembly; The first section of the channel is formed between the support member and the diaphragm of the second speaker unit; the second section of the channel is formed on the support member; The foldable electronic device comprises a second component located between the second speaker unit and the edge of the first part. The second component is sealed from the support member and is provided with the third channel.

12. The foldable electronic device according to claim 1 or 11, characterized in that: The first speaker unit and the second speaker unit are assembled into a double-diaphragm speaker, and along a direction parallel to the first screen, a distance d between the inner core of the double-diaphragm speaker and the edge of the first part is d, d≤2mm.

13. The foldable electronic device according to claim 12, characterized in that: The diaphragm of the first speaker unit and the diaphragm of the second speaker unit are arranged opposite to each other.

14. The foldable electronic device according to claim 1, characterized in that: The first part includes a secondary screen and a first microphone. The secondary screen and the back cover are both opposite to the first screen. The first microphone picks up sound through an assembly gap between the secondary screen and the back cover.

15. The foldable electronic device according to claim 14, characterized in that: Along the direction parallel to the secondary screen, the length of the first part relative to the rotating shaft mechanism is C, and the distance between the first microphone and the rotating shaft mechanism is c, where c≤C / 2.

16. The foldable electronic device according to claim 14, characterized in that: The first part and the second part are folded up and down relative to the hinge mechanism; the foldable electronic device includes a second microphone located at the top edge of the first part and a third microphone located at the bottom edge of the second part, and the second microphone and the third microphone are used to judge the sound field.

17. The foldable electronic device according to claim 16, characterized in that: When the first part and the second part are in the unfolded state, the angle between the line between the second microphone and the third microphone and the perpendicular bisector of the foldable electronic device is e, 0 degrees ≤ e ≤ 10 degrees; And / or, the assembly gap between the secondary screen and the back cover includes a first gap and a second gap relative to each other, the second gap is located closer to the edge of the first part than the first gap, and the first microphone picks up sound through the first gap.

18. The foldable electronic device according to claim 16, characterized in that: The distance between the first microphone and the perpendicular bisector of the foldable electronic device is f, where f≤3 mm.

19. The foldable electronic device according to claim 1, characterized in that: The foldable electronic device includes a first power amplifier and a switching switch, wherein the first power amplifier is connected to the processor and the switching switch; the switching switch is also connected to the processor, and the processor controls the switching switch to switch to the first speaker unit or the second speaker unit according to the state detected by the sensor.

20. The foldable electronic device according to claim 1, characterized in that: The foldable electronic device includes a second power amplifier and a lower speaker unit, the second power amplifier is connected to the processor and the lower speaker unit, and the lower speaker unit is arranged in the second part; the processor also controls the lower speaker unit to make sound when the foldable electronic device performs the function of hands-free calling or external speaker.

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