Sound production unit and sound production module

Abstract

The utility model discloses a sounding unit and a sounding module, the sounding unit comprises a basin stand, a vibrating diaphragm assembly, a front cover and a waterproof breathable film, the vibrating diaphragm assembly is fixedly connected with the basin stand, and the vibrating diaphragm assembly is provided with an air hole communicating the inner side and the outer side of the vibrating diaphragm assembly; the front cover is connected with the vibrating diaphragm assembly and / or the basin stand, an air interlayer is arranged between the front cover and the vibrating diaphragm assembly, and the front cover is provided with a ventilation port which is communicated with the ventilation hole through the air interlayer; the waterproof breathable film is connected to the front cover and covers the ventilation opening. The vibrating diaphragm assembly of the sounding unit is provided with the air hole, the air hole of the front cover is provided with the waterproof air-permeable membrane, and the function of arranging the small hole on the rear shell of the whole machine to balance air pressure is integrated on the sounding unit body, so that the sounding unit has the functions of ventilation and pressure relief, and the whole machine is not provided with the small hole on the rear shell and is not blocked by external dirt; and the sound production unit can stably work for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic converters, in particular to a sound generating unit and a sound generating module. Background Art

[0002] At present, the dynamic sound unit drives the coil through electromagnetic force. The coil drives the diaphragm bonded to it to do reciprocating motion and radiate sound waves outward. The coil in the sound unit itself generates a lot of heat when working. When the sound unit continues to work, the heat generated by it will heat and expand the internal air, making the internal air pressure greater than the external air pressure. If the internal pressure cannot be released, the diaphragm will bulge outward and be unable to vibrate and make sound. The folding ring part of the diaphragm is made of flexible material and is a non-rigid body. Therefore, if an air pressure difference is formed inside and outside the diaphragm, it will affect the shape of the folding ring part and make it difficult for the diaphragm to move to the side with higher air pressure, resulting in failure of its normal sound function.

[0003] At present, the existing technology is to open a small hole on the back shell of a mobile phone, tablet, watch or other device, and stick a breathable film on the small hole. The small hole connects to the internal space of the sound unit to balance the air pressure difference inside and outside the diaphragm. However, the small hole on the back shell and the breathable film are in contact with the external environment. As the use time increases, they are easily blocked by foreign matter and dirt in the external environment, resulting in failure, causing abnormal function of the pronunciation unit and affecting customer use. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a sound unit capable of balancing the air pressure inside and outside the diaphragm, and a sound module having the sound unit.

[0005] In order to solve the above technical problems, the first technical solution adopted by the utility model is: a sound unit, comprising:

[0006] basin stand;

[0007] A diaphragm assembly, wherein the diaphragm assembly is fixedly connected to the basin frame, and the diaphragm assembly is provided with an air hole connecting the inner side and the outer side thereof;

[0008] A front cover, the front cover is connected to the diaphragm assembly and / or the basin frame, an air barrier is provided between the front cover and the diaphragm assembly, and a vent is provided on the front cover to communicate with the vent through the air barrier;

[0009] A waterproof and breathable membrane is connected to the front cover and covers the vent.

[0010] In one embodiment, the waterproof breathable membrane is located on a side of the front cover away from the diaphragm assembly.

[0011] In one embodiment, the waterproof breathable membrane is located inside the air barrier layer.

[0012] In one embodiment, the waterproof and breathable membranes are respectively provided on the inner side and the outer side of the front cover.

[0013] In one embodiment, the diaphragm assembly includes a connected sound membrane and a dome, and the air holes are provided on the dome and / or the sound membrane.

[0014] In one embodiment, the number of the air vent on the front cover is one.

[0015] In one embodiment, there are multiple vents on the front cover, and at least one waterproof breathable membrane covers multiple vents at the same time.

[0016] In one embodiment, the number of the ventilation holes is one or more.

[0017] In one embodiment, a sealing ring is further provided on the outer surface of the front cover.

[0018] In order to solve the above technical problems, the second technical solution adopted by the present invention is: a sound module, including the above sound unit.

[0019] The beneficial effects of the utility model are:

[0020] Air holes are arranged on the diaphragm assembly of the sound unit, and a waterproof breathable membrane is arranged at the air vent of the front cover. The function of balancing the air pressure by opening a small hole on the back shell of the whole machine is integrated into the sound unit body, so that the sound unit has its own ventilation and pressure relief function, and the whole machine has no small holes on the back shell, which will not be blocked by external dirt, which is conducive to ensuring that the sound unit can work stably for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 This is an exploded view of the sound unit of the first embodiment of the utility model;

[0023] Figure 2 It is a cross-sectional view of the sound unit of the first embodiment of the utility model;

[0024] Figure 3 It is a cross-sectional view of the sound module of the first embodiment of the utility model;

[0025] Figure 4It is a cross-sectional view of the sound unit of the second embodiment of the present utility model;

[0026] Figure 5 It is a cross-sectional view of the sound-emitting unit of the third embodiment of the present invention.

[0027] Description of Figure Numbers:

[0028] 1. Basin stand;

[0029] 2. Diaphragm assembly; 21. Air vent; 22. Sound film; 23. Dome;

[0030] 3. Magnetic circuit components;

[0031] 4. Voice coil;

[0032] 5. Front cover; 51. Ventilation port;

[0033] 6. Waterproof and breathable membrane;

[0034] 7. Air barrier;

[0035] 8. Sealing ring;

[0036] 9. Module housing; 91. Front cavity; 92. Rear cavity; 93. Sound outlet. DETAILED DESCRIPTION

[0037] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0041] In addition, if the meaning of "and / or" appears in the full text is to include three parallel solutions, taking "and / or" as an example, it includes solutions, or solutions, or solutions that are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0042] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] Embodiment 1

[0044] Please refer to Figures 1 to 3 , Embodiment 1 of the present utility model is: Figure 1 and Figure 2 As shown, the sound-emitting unit includes a basin frame 1, a diaphragm assembly 2, a magnetic circuit assembly 3, a voice coil 4, a front cover 5 and a waterproof breathable membrane 6, the diaphragm assembly 2 and the magnetic circuit assembly 3 are respectively fixedly connected to the basin frame 1, the magnetic circuit assembly 3 has a magnetic gap, the top of the voice coil 4 is connected to the diaphragm assembly 2, and the bottom of the voice coil 4 is arranged corresponding to the magnetic gap, the diaphragm assembly 2 is provided with an air hole 21 connecting the inner and outer sides thereof, the front cover 5 is connected to the diaphragm assembly 2 and / or the basin frame 1, an air barrier layer 7 is provided between the front cover 5 and the diaphragm assembly 2, the front cover 5 is provided with an air port 51 connecting the inner and outer sides thereof, the air port 51 is connected to the air port 21 via the air barrier layer 7, and the waterproof breathable membrane 6 is connected to the front cover 5 and covers the air port 51.

[0045] The diaphragm assembly 2 includes a connected sound membrane 22 and a dome 23, and the dome 23 and / or the sound membrane 22 are provided with the air holes 21. In this embodiment, the sound membrane 22 includes an inner fixing portion, a folding ring portion, and an outer fixing portion that are sequentially connected from the inside to the outside, and a window is provided on the inner fixing portion, and the dome 23 closes the window, and the air holes 21 are provided on the dome 23. In other embodiments, the air holes 21 can be provided on at least one of the inner fixing portion, the folding ring portion, and the outer fixing portion.

[0046] The number of the air holes 21 is one or more, and the specific number can be set as needed. When the number of the air holes 21 is multiple, it is preferred that the multiple air holes 21 are symmetrically arranged.

[0047] The number of the vents 51 on the front cover 5 is one or more. When the number of the vents 51 on the front cover 5 is more than one, at least one of the waterproof breathable membranes 6 simultaneously covers the more than one vents 51. Of course, in actual products, the number of the vents 51 and the number of the waterproof breathable membranes 6 may be the same, and in this case, the two are arranged in a one-to-one correspondence.

[0048] In this embodiment, the waterproof breathable membrane 6 is located on the side of the front cover 5 away from the diaphragm assembly 2. In other embodiments, the waterproof breathable membrane 6 may also be located on the side of the front cover 5 close to the diaphragm assembly 2. As an extension, the waterproof breathable membrane 6 may be provided on both the inner and outer sides of the front cover 5 to further improve the waterproof capability of the sound unit.

[0049] Optionally, a sealing ring 8 is further provided on the outer surface of the front cover 5 .

[0050] like Figure 3 As shown, this embodiment also provides a sound module, which includes a module shell 9 and the above-mentioned sound unit, and the sound unit divides the internal space of the module shell 9 into a front cavity 91 and a rear cavity 92. The module shell 9 is also provided with a sound outlet 93, and the sound outlet 93 and the air barrier layer 7 are respectively connected to the front cavity 91.

[0051] When the sound unit has the sealing ring 8, the sealing ring 8 contacts the inner surface of the module housing 9, so that the sound unit can achieve better waterproof performance and prevent the water vapor in the front cavity 91 from invading the rear cavity 92 through the gap between the sound unit and the module housing 9. The material of the sealing ring 8 can be silicone or the like.

[0052] Embodiment 2

[0053] Please refer to Figure 4 The second embodiment of the present invention is a parallel technical solution of the first embodiment, and is different from the first embodiment in that the waterproof breathable membrane 6 is located in the air barrier 7 of the sound-emitting unit.

[0054] Embodiment 3

[0055] Please refer to Figure 5 Embodiment 3 of the present invention is a parallel technical solution of Embodiment 1, and is different from Embodiment 1 in that a waterproof breathable membrane 6 is provided on the inner and outer sides of the front cover 5 , respectively, and the waterproof breathable membrane 6 on the inner side of the front cover 5 is located in the air barrier 7 .

[0056] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A sound unit, characterized in that: include basin stand; A diaphragm assembly, wherein the diaphragm assembly is fixedly connected to the basin frame, and the diaphragm assembly is provided with an air hole connecting the inner side and the outer side thereof; A front cover, the front cover is connected to the diaphragm assembly and / or the basin frame, an air barrier is provided between the front cover and the diaphragm assembly, and a vent is provided on the front cover to communicate with the vent through the air barrier; A waterproof and breathable membrane is connected to the front cover and covers the ventilation opening.

2. The sound generating unit according to claim 1, characterized in that: The waterproof and breathable membrane is located on a side of the front cover away from the diaphragm assembly.

3. The sound generating unit according to claim 1, characterized in that: The waterproof and breathable membrane is located in the air barrier layer.

4. The sound generating unit according to claim 1, characterized in that: The waterproof and breathable membranes are respectively arranged on the inner side and the outer side of the front cover.

5. The sound generating unit according to claim 1, characterized in that: The diaphragm assembly includes a connected sound membrane and a dome, and the air holes are provided on the dome and / or the sound membrane.

6. The sound generating unit according to claim 1, characterized in that: The number of the air vent on the front cover is one.

7. The sound generating unit according to claim 1, characterized in that: There are multiple vents on the front cover, and at least one waterproof breathable membrane covers multiple vents at the same time.

8. The sound generating unit according to claim 1, characterized in that: The number of the ventilation holes is one or more.

9. The sound generating unit according to claim 1, characterized in that: The outer surface of the front cover is also provided with a sealing ring.

10. The sound module is characterized by: The invention comprises the sound-emitting unit as described in any one of claims 1 to 9.

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