CN216437433U - Microphone sealing structure and electronic equipment - Google Patents

Abstract

The application provides a microphone seal structure, includes: the microphone is arranged on the mainboard; the sealing sleeve is sleeved on the microphone and comprises a butting part, the butting part is butted with the main board, and the butting part is provided with a skirt edge; the seal cover is in interference fit with the shell. The application provides a microphone sealing structure, through the interference fit of seal cover and casing, butt portion and mainboard butt simultaneously realize sealed function, have improved the difficult assembly that leads to because of the processing error accumulation between the material and sealed bad problem, need not to set up two-sided gum, the cost is reduced. The application also provides an electronic device.

Description

Microphone sealing structure and electronic equipment

Technical Field

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

Background

The miniature microphone devices are arranged in the electronic equipment such as mobile phones, tablets and intelligent voice equipment at present, so that functions of communication, voice interaction and the like of terminal products are realized. When inputting voice, the miniature microphone needs to be in a sealed configuration with the housing of the end product. The tightness of the microphone pickup channel is usually a key factor for determining the quality of the call and the voice interaction performance of the terminal product.

At present, a silica gel sleeve is sleeved on a microphone for sealing the microphone of an end product. In conventional structural design, the casing of terminal product all is that the large tracts of land is pressed on sealed gum cover, because there is machining error in sealed gum cover and terminal housing, and the error accumulation that its two produced after the assembly can lead to sealed gum cover and terminal housing to be difficult to better pressure tight fit, or excessive compressing tightly, when excessively compressing tightly, leads to the increase of the terminal product assembly degree of difficulty, under the condition that does not compress tightly well, makes the leakproofness of microphone receive the influence. On the other hand, in order to achieve better sealing performance, a double-sided back adhesive is often attached to the surface of the sealing silica gel sleeve contacting the PCB for sealing, which results in increase of material cost and processing cost of the terminal product.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a microphone sealing structure and electronic equipment, so as to solve the technical problem.

The embodiments of the present application achieve the above object by the following means.

In a first aspect, an embodiment of the present application provides a microphone sealing structure, including: the microphone is arranged on the mainboard; the sealing sleeve is sleeved on the microphone and comprises a butting part, the butting part is butted with the main board, and the butting part is provided with a skirt edge; the seal cover is in interference fit with the shell.

In one embodiment, the sealing sleeve comprises a top wall and a peripheral wall, with a skirt disposed around the bottom of the peripheral wall of the sealing sleeve.

In one embodiment, the sealing sleeve comprises an outer surface, and the sealing sleeve is further provided with a convex edge, the convex edge is arranged on the outer surface, and the convex edge is in interference fit with the shell.

In one embodiment, the ledge is an annular ledge.

In one embodiment, the sealing sleeve is provided with a first sound inlet hole, the annular flange is arranged around the first sound inlet hole, and the first sound inlet hole penetrates through the outer surface.

In one embodiment, the housing is provided with a second sound inlet hole, which is arranged coaxially with the first sound inlet hole.

In one embodiment, the sealing sleeve is made of silicone.

In one embodiment, the sealing sleeve is formed by injection molding in one step.

In one embodiment, the microphone is attached to the motherboard.

In a second aspect, the present application provides an electronic device, including the microphone sealing structure in any of the above embodiments.

The application provides a microphone sealing structure and electronic equipment, through the interference fit of seal cover and casing, butt portion and mainboard butt simultaneously realize sealed function, have improved the difficult assembly that leads to because of the machining error accumulation between the material and sealed bad problem, need not to set up two-sided gum, the cost is reduced.

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 will be 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 cut-away view of a microphone sealing structure provided in an embodiment of the present application.

Fig. 2 is a schematic structural diagram of the microphone sealing structure of fig. 1.

Fig. 3 is a schematic structural diagram of another view angle of the microphone sealing structure of fig. 1.

Fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

In order to make the technical solution better understood by those skilled in the art, the technical solution in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be apparent that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the present application, are within the scope of protection of the present application.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

The electronic equipment with the voice function is one of indispensable tools in daily life of people, and people can conveniently use the electronic equipment with the voice function to carry out voice communication, input voice control instructions, input voice information and the like. The miniature microphone and the shell are configured in a sealing mode, so that the sealing performance of a microphone pickup channel is guaranteed, and the better conversation quality and the better voice interaction effect of the electronic equipment are achieved.

Referring to fig. 1, an embodiment of the present invention provides a microphone sealing structure 100, including: the microphone comprises a main board 110, a microphone 120, a sealing sleeve 130 and a shell 140, wherein the microphone 120 is arranged on the main board 110; the sealing sleeve 130 is sleeved on the microphone 120, the sealing sleeve 130 comprises a contact part 131, the contact part 131 is contacted with the main board 110, and the contact part 131 is provided with a skirt 1310; the boot seal 130 is an interference fit with the housing 140.

The application provides a microphone sealing structure 100, through the interference fit of seal cover 130 and casing 140, butt portion 131 and mainboard 110 butt simultaneously realize sealed function, have improved the difficult assembly that leads to because of the machining error accumulation between the material and sealed bad problem, need not to set up two-sided gum, the cost is reduced.

The microphone sealing structure 100 provided by the application can be applied to various electronic devices, such as mobile phones, tablet computers, intelligent voice devices and the like, the good sealing performance of the microphone sealing structure 100 enables the communication quality to be better, and the electronic devices can accurately recognize voice input contents during voice interaction. The main Board 110 may be a Printed Circuit Board (PCB), and the main Board 110 is an important electronic component of the electronic device, a support of the electronic component, and a provider of Circuit connection of the electronic component.

In one embodiment, the microphone 120 may be a condenser microphone, which converts sound signals into electrical signals by using the change of capacitance. The condenser microphone has the advantages of low price, small volume, good pickup effect and the like.

In one embodiment, the microphone 120 is attached to the motherboard 110, that is, the microphone 120 is Mounted on the motherboard 110 by Surface Mount Technology (SMT). Surface mount technology refers to the abbreviation of a series of process flows for processing on the basis of a PCB, and is the most popular technology and process in the electronic assembly industry. The advantages of patch processing include high packaging density, small size of electronic product, light weight, and the size and weight of patch element are only about 1/10 of traditional plug-in element. After SMT is adopted, the volume of an electronic product can be reduced by 40-60%, the weight is reduced by 60-80%, the reliability is high, the vibration resistance is high, the defect rate of welding spots is low, the high-frequency characteristic is good, and the electromagnetic and radio frequency interference is reduced; meanwhile, the automation is easy to realize, the production efficiency is improved, and the cost is reduced by 30-50%.

In one embodiment, the microphone 120 is rectangular parallelepiped shaped, and the boot seal 130 may be substantially rectangular parallelepiped shaped to fit the shape of the microphone 120. The sealing sleeve 130 may also be adapted according to the shape of the microphone 120, for example, when the microphone 120 is cylindrical, the sealing sleeve 130 may be correspondingly cylindrical. The shape of the sealing sleeve 130 is set without affecting the sealing performance of the sealing sleeve 130. The sealing sleeve 130 may have a certain thickness, in an embodiment, the thickness of the sealing sleeve 130 may be 1mm to 5mm, and the sealing sleeve 130 in this thickness interval may not only ensure the sealing performance of the sealing sleeve 130, but also consider the volume miniaturization of the microphone sealing structure 100. Wherein, the thickness direction of the sealing sleeve 130 is perpendicular to the main plate 110.

Referring to fig. 1 and fig. 2, the sealing sleeve 130 includes a peripheral wall 132 and a top wall 133, the peripheral wall 132 is disposed on the main board 110, and the top wall 133 is connected to a side of the peripheral wall 132 away from the main board 110. The peripheral wall 132 and the top wall 133 enclose a receiving cavity 134 (see fig. 3 in detail), and the receiving cavity 134 is used for receiving the microphone 120. The shape, size and depth of the accommodating cavity 134 can be adapted to the microphone 120, and the adapted arrangement means that the top wall 133 and the peripheral wall 132 abut against the microphone 120 without generating a gap when the microphone 120 is located in the accommodating cavity 134. The arrangement ensures the sealing performance of the sealing sleeve 130 to the microphone 120, and has a certain protection effect on the microphone 120, so that the microphone 120 can be stably arranged on the main board 110, and the service life of the microphone 120 is prolonged.

In one embodiment, the sealing sleeve 130 is made of silicone. The silica gel material is soft, has good dustproof and waterproof performance, plays the guard action to microphone 120, has reduced the condition that microphone 120 wets and has taken place. The silica gel material also has certain elasticity, and when the casing 140 is abutted against the sealing sleeve 130, the sealing sleeve 130 deforms, and the casing 140 generates pre-pressure to the sealing sleeve 130, so that the microphone 120 can be well sealed.

In one embodiment, the boot seal 130 is injection molded in one piece. The sealing sleeve 130 may be manufactured by making an injection mold according to a designed size, and in one embodiment, black or colored silicone rubber with hardness of 40-75 degrees may be selected, and the manufacturing is completed by extrusion injection molding, demolding and finishing. The sealing sleeve 130 is manufactured by adopting a one-time injection molding process, so that the manufacturing cost of the sealing sleeve 130 is low, the time consumption is short, the sealing sleeve 130 can be manufactured in batches, and the labor cost is reduced. Different injection molds may be designed to complete the manufacturing process for different shapes and sizes of the sealing sleeve 130.

In one embodiment, boot seal 130 includes an outer surface 1331, with outer surface 1331 being provided to top wall 133. The sealing boot 130 is further provided with a protruding edge 135, the protruding edge 135 is provided on the outer surface 1331, and the protruding edge 135 is in interference fit with the housing 140. The sealing boot 130 is disposed between the main board 110 and the housing 140, and the outer surface 1331 faces the housing 140, and the protruding edge 135 protrudes from the outer surface 1331. The height of the lip 135 protruding from the outer surface 1331 may be 2-5mm, and the height of the lip 135 may be designed according to the size of the sealing boot 130 and the distance between the main plate 110 and the housing 140, so that the lip 135 abuts the housing 140. The ledge 135 is adapted to abut against the housing 140, the housing 140 comprises a body portion 143, the body portion 143 pre-stresses the ledge 135 in a direction towards the main plate 110, the ledge 135 is compressible towards the main plate 110, and the outer surface 1331 is recessed in a position corresponding to the ledge 135, such that the sealing sleeve 130 is deformed.

In one embodiment, the ledge 135 is an annular ledge. The effect of the annular arrangement of the protruding edge 135 is that the pre-pressure of the housing 140 on the sealing sleeve 130 is uniform, and the sealing sleeve 130 is subjected to a uniform force towards the main plate 110, so that the sealing sleeve 130 can be tightly attached to the main plate 110. The annular convex edge 135 is arranged, so that dust can be prevented from entering the microphone 120 from the gap of the convex edge 135, and the sound receiving effect of the microphone 120 is prevented from being influenced. Meanwhile, the annular convex edge 135 can save the material of the sealing sleeve 130, and the manufacturing cost of the sealing sleeve 130 is reduced.

In one embodiment, a skirt 1310 is provided around the bottom of the peripheral wall 132 of the sealing boot 130. The skirt 1310 is adapted to abut against the main board 110 to seal the microphone 120. The skirt 1310 includes a first surface 1311 and a second surface 1312, both the first surface 1311 and the second surface 1312 may be planar, and the first surface 1311 and the second surface 1312 are disposed opposite each other. The pre-stressing of the gland 130 by the housing 140 causes the second surface 1312 of the skirt 1310 to bear tightly against the main plate 110. Meanwhile, the housing 140 may further include a supporting portion 142, and the supporting portion 142 is connected to the main body 143 and is located between the main body 143 and the main board 110. The abutment 142 is adapted to abut against the first surface 1311 of the skirt 1310. In one embodiment, the projected area of the abutting portion 142 is substantially equal to the projected area of the skirt 1310, and the outer peripheral surface of the abutting portion 142 and the outer peripheral surface of the skirt 1310 may be flush with each other. The abutting portion 142 applies a pre-pressure to the skirt 1310 toward the main board 110, and the skirt 1310 deforms. The abutting portion 142 and the skirt 1310 are arranged, so that the sealing sleeve 130 is tightly abutted to the main board 110, the sealing performance of the sealing sleeve 130 is improved, and the sealing performance of the sound pickup channel is ensured. Meanwhile, the microphone 120 can be sealed without additionally arranging a back adhesive, so that the cost is reduced.

In one embodiment, the sealing sleeve 130 is provided with a first sound inlet hole 136, and an annular flange 135 is disposed around the first sound inlet hole 136. The microphone 120 is further provided with a sound pickup hole 121, and the first sound inlet hole 136 is coaxially arranged with the sound pickup hole 121 to ensure a good sound pickup effect. A first sound inlet aperture 136 is provided through the top wall 133 of the gland 130. The first sound entrance hole 136 may have a diameter slightly larger than the sound pickup hole 121 so that sound can be efficiently propagated into the sound pickup hole 121. The first sound inlet hole 136 may be disposed at the center of the annular protruding edge 135, so as to ensure that the pre-pressure of the casing 140 on the sealing sleeve 130 uniformly surrounds the first sound inlet hole 136, so that a gap is not easily generated between the top wall 133 of the sealing sleeve 130 and the microphone 120, the sealing performance of the sealing sleeve 130 is improved, and dust is not easily introduced into the microphone 120.

In one embodiment, the housing 140 has a second sound inlet hole 144, that is, the body 143 has a second sound inlet hole 144, and the second sound inlet hole 144 is coaxial with the first sound inlet hole 136. The sound pickup hole 121, the first sound inlet hole 136 and the second sound inlet hole 144 of the microphone 120 are coaxially arranged to ensure a better sound pickup effect of the microphone 120. The diameter of the second sound inlet hole 144 may be slightly larger than the first sound inlet hole 136. The second sound inlet hole 144 is disposed through the housing 140. In an embodiment, a dust cover may be disposed at the second sound inlet hole 144 to reduce dust entering the microphone 120 and affecting the sound collecting performance of the microphone 120.

Referring to fig. 1 and fig. 4, an electronic device 200 including the microphone sealing structure 100 according to any of the above embodiments is further provided in the embodiments of the present application. The electronic device 200 may be any intelligent electronic device with a voice function, such as a tablet computer, a mobile phone, a smart watch, or other intelligent wearable devices. Illustratively, the electronic device 200 is a mobile phone, and the housing 140 may be a rear cover or a front panel of the electronic device 200.

According to the electronic device 200 and the microphone 120 provided by the embodiment of the application, the housing 140 abuts against the convex edge 135 to generate pre-pressure towards the main board 110, so that the sealing sleeve 130 is tightly abutted against the main board 110, and the problems of difficult assembly and poor sealing caused by accumulated processing errors among materials are solved. The bottom of the peripheral wall 132 of the sealing sleeve 130 is provided with a skirt 1310, and the skirt 1310 is abutted against the abutting part 142, so that the sealing sleeve 130 can be further tightly matched with the main board 110, double-sided back glue is omitted, and the cost of the sealing microphone 120 is saved.

For detailed structural features of the microphone sealing structure 100, refer to the related description of the above embodiments. Since the electronic device includes the microphone sealing structure 100 in the above embodiments, all the advantages of the microphone sealing structure 100 are provided, and are not described herein again.

Furthermore, the terms "first," "second," and the like are used merely for distinguishing between descriptions and not intended to imply or imply a particular structure. The description of the terms "some embodiments," "other embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the application. In this application, the schematic representations of the terms used above are not necessarily intended to be the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples and features of the various embodiments or examples described in this application can be combined and combined by those skilled in the art without being mutually inconsistent.

The above embodiments are only for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims (10)

1. A microphone sealing structure, comprising:

a main board;

the microphone is arranged on the mainboard;

the sealing sleeve is sleeved on the microphone and comprises a butting part, the butting part is butted with the main board, and the butting part is provided with a skirt edge;

the sealing sleeve is in interference fit with the shell.

2. The microphone seal of claim 1, wherein the sealing boot includes a top wall and a perimeter wall, the skirt being disposed around a bottom of the perimeter wall.

3. The microphone sealing structure of claim 2, wherein the sealing sleeve comprises an outer surface, the sealing sleeve further having a protruding edge disposed on the outer surface, the protruding edge being in interference fit with the housing.

4. The microphone sealing structure of claim 3, wherein the raised edge is an annular raised edge.

5. The microphone sealing structure of claim 4, wherein the sealing sleeve is provided with a first sound inlet hole, the annular convex edge is arranged around the first sound inlet hole, and the first sound inlet hole penetrates through the top wall.

6. The microphone sealing structure according to claim 5, wherein the case is provided with a second sound inlet hole which is provided coaxially with the first sound inlet hole.

7. The microphone sealing structure according to claim 1, wherein the sealing sleeve is made of a silica gel material.

8. The microphone sealing structure of claim 7, wherein the sealing sleeve is formed by one-time injection molding.

9. The microphone sealing structure according to any one of claims 1 to 8, wherein the microphone is attached to the main board.

10. An electronic device, characterized in that it comprises a microphone sealing structure according to any of claims 1-9.

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