WO2021042403A1

WO2021042403A1 - Loudspeaker structure, and electronic apparatus applying same

Info

Publication number: WO2021042403A1
Application number: PCT/CN2019/104883
Authority: WO
Inventors: 肖波
Original assignee: 瑞声声学科技(深圳)有限公司; 瑞声科技(新加坡)有限公司
Priority date: 2019-09-06
Filing date: 2019-09-09
Publication date: 2021-03-11
Also published as: CN112468943A; CN112468943B

Abstract

Provided are a loudspeaker structure and an electronic apparatus applying same. The electronic apparatus comprises the loudspeaker structure. The loudspeaker structure comprises a housing and a loudspeaker unit. The housing comprises a base plate, a first side wall, a second side wall, and a support platform. The base plate, the support platform, the second side wall, and the loudspeaker unit enclose to form a sound chamber. The first side wall has a first sealing surface. The second side wall has a second sealing surface. The second sealing surface and the first sealing surface are connected to form an annular sealing surface. The annular sealing surface encloses an outer side of an outer wall of the loudspeaker unit. An outer wall of the loudspeaker unit that corresponds to the second sealing surface is provided with an adhesive recess. After the loudspeaker unit is fitted to the support platform, simply applying an adhesive between the adhesive recess and the second sealing surface establishes a sealed connection between the loudspeaker unit and the second side wall. In this way, the invention achieves the sealed connection without providing a protruding support structure at a position of the sound chamber proximate to the second side wall, thereby increasing the space of the sound chamber while ensuring unrestricted air circulation, and improving sound quality of the loudspeaker structure.

Description

Loudspeaker structure and electronic equipment using the loudspeaker structure

Technical field

The present invention relates to the technical field of loudspeakers, in particular to a loudspeaker structure and an electronic device using the loudspeaker structure.

Background technique

With the development of the mobile Internet, the types and requirements of electronic products have become more and more diverse, and consumers have higher and higher requirements for electronic products. On the one hand, high-quality broadcasting functions; on the other hand, the internal settings of electronic products Because of the complex circuit system, some electronic products that are easily exposed to water or humid environments have higher requirements for waterproofing, so as to prevent water ingress and short circuit from causing damage to the electronic products.

The broadcasting function of electronic products is generally realized by the speaker structure. The speaker structure usually includes a casing and a speaker unit assembled on the casing. A sound cavity is formed between the casing and the speaker unit, and a sound hole is opened on the casing to output sound. The hole communicates with the sound cavity. In the electronic product, the sound cavity of the speaker structure communicates with the outside through the sound hole, so external water can enter the sound cavity of the speaker through the sound hole.

In order to prevent water from entering the electronic product through the sound hole, the gap between the speaker unit and the housing needs to be waterproofed. In the related art, the position of the housing corresponding to the sound hole needs to be provided with a shielding structure, but this The waterproof method makes the housing have a structure that protrudes into the sound cavity, which reduces the size of the sound cavity space and affects the fluidity of the airflow in the sound cavity and affects the sound quality.

technical problem

The purpose of the present invention is to provide a speaker structure and an electronic device using the speaker structure. The housing does not have a structure protruding into the front cavity, which can increase the space of the front cavity while achieving the waterproof effect, and improve the front cavity Unobstructed airflow improves sound quality.

Technical solutions

In order to solve the above technical problems, the present invention is implemented as follows. A speaker structure includes a housing with a first accommodating space and a speaker unit partially accommodated in the first accommodating space. The housing includes a bottom plate, A first side wall extending from the periphery of the bottom plate toward the speaker unit, a second side wall extending from the periphery of the bottom plate toward the speaker unit and connected end to end with the first side wall, and The first side wall extends along the board surface direction of the bottom plate into the first accommodating space and supports the support stand of the speaker unit, the bottom plate, the first side wall and the second The side walls are enclosed to form the first accommodating space, the first side wall has a first sealing surface connected to the support platform on one side, and the second side wall has a direction that is most oriented toward the first accommodating space. Close to the second sealing surface of the speaker unit, the second sealing surface is connected with the first sealing surface to form an annular sealing surface, and the annular sealing surface surrounds the outer side of the outer wall of the speaker unit. The bottom plate, the supporting table, the second side wall and the speaker unit are enclosed to form a sound cavity, and the outer wall surface of the speaker unit corresponding to the second sealing surface is recessed inward to form a glue groove, so The second sealing surface and the outer wall surface are glued to form a waterproof structure.

Further, the speaker unit includes a basin frame, a top cover and a bottom cover respectively covering both sides of the basin frame and enclosing the basin frame to form a second accommodating space, and a second accommodating space. The magnetic circuit system and the vibration system in the space; the outer wall of the basin frame corresponding to the second sealing surface is recessed inward to form the glue groove.

Further, the inner side of the second side wall protrudes toward the speaker unit to form a sealing block, the second sealing surface is located on the side of the sealing block close to the speaker unit, and the sealing block has a close proximity to the speaker unit. The bottom end surface of the bottom plate is flush with the side of the speaker unit close to the bottom plate.

Further, the first side wall and the second side wall both have a diversion inclined surface, and the diversion inclined surface is connected with the side of the annular sealing surface away from the bottom plate.

Further, the glue groove has a first groove wall close to the bottom plate and a second groove wall far away from the bottom plate, and an edge of the second sealing surface away from the bottom plate is located between the first groove wall and the bottom plate. Between the second groove wall.

Further, the support table has a receiving surface away from the bottom plate, the receiving surface is connected to the first sealing surface, and a side of the speaker unit close to the bottom plate is attached to the receiving surface.

Further, the receiving surface is parallel to the plate surface of the bottom plate, and the first sealing surface and the second sealing surface are both perpendicular to the plate surface of the bottom plate.

Further, an electronic device is provided, which includes the speaker structure as described in any one of the above.

Beneficial effect

Compared with the prior art, the speaker structure of the present invention and the electronic device using the speaker structure have the following beneficial effects:

When assembling the speaker structure, the side of the speaker unit with the glue groove corresponds to the second side wall of the housing, and then the speaker unit is assembled on the support table, and the speaker unit is embedded in the annular sealing surface. The glue groove corresponds to the second sealing surface. Finally, the waterproof structure is formed by dispensing glue between the second sealing surface and the outer wall surface of the speaker unit to seal the speaker unit and the second side wall, and the sound cavity is close to the second side wall. The side wall does not need to be provided with a protruding structure to shield the speaker unit to achieve a sealed connection, which increases the space of the sound cavity and ensures the smooth airflow, which improves the sound quality of the speaker structure.

Description of the drawings

FIG. 1 is a schematic diagram of the overall three-dimensional structure of the speaker structure in an embodiment of the present invention;

2 is a schematic diagram 1 of a three-dimensional exploded structure of the speaker structure of the present invention;

Fig. 3 is a second schematic diagram of a three-dimensional exploded structure of the speaker structure of the present invention;

Fig. 4 is a schematic sectional view of the loudspeaker structure of the present invention in the direction A-A in Fig. 1;

Figure 5 is an enlarged view of detail B in Figure 4 of the speaker structure of the present invention;

6 is a schematic diagram of the three-dimensional structure of the housing in the speaker structure of the present invention from a first perspective;

FIG. 7 is a schematic diagram of a three-dimensional structure of the housing in the speaker structure of the present invention from a second view angle;

Fig. 8 is a schematic diagram of an exploded structure of the electrical connection structure in the speaker unit of the present invention.

Embodiments of the present invention

The present invention will be further described below in conjunction with the drawings and embodiments.

Examples:

In this embodiment, an electronic device (not shown) is provided, including a speaker structure, as shown in Figs. 1-7, wherein the speaker structure includes a housing 1 having a first accommodating space and partly accommodated in the first accommodating space The housing 1 includes a bottom plate 11, a first side wall 12 extending from the periphery of the bottom plate 11 toward the speaker unit 2, and a first side wall 12 extending from the periphery of the bottom plate 11 toward the speaker unit 2. A second side wall 13 connected end to end, and a support platform 121 extending from the first side wall 12 along the board surface direction of the bottom plate 11 into the first accommodating space and supporting the speaker unit 2, the bottom plate 11 and the first side wall 12 Encloses with the second side wall 13 to form a first accommodating space. The first side wall 12 has a first sealing surface 122 connected to the support table 121 on one side. The second side wall 13 has a direction closest to the speaker in the direction of the first accommodating space. The second sealing surface 1311 of the monomer 2, the second sealing surface 1311 and the first sealing surface 122 are connected to form an annular sealing surface 001, the annular sealing surface 001 surrounds the outside of the outer wall of the speaker unit 2, the bottom plate 11, the support platform 121, The second side wall 13 and the speaker unit 2 enclose a sound cavity 002. The outer wall surface of the speaker unit 2 corresponding to the second sealing surface 1311 is recessed inward to form a glue groove 211. The second sealing surface 1311 and the outer wall surface are glued Form a waterproof structure.

When assembling the speaker structure, the side of the speaker unit 2 with the glue groove 211 corresponds to the second side wall 13 of the housing 1, and then the speaker unit 2 is assembled on the support platform 121. At this time, the speaker unit 2 Embedded in the annular sealing surface 001, the glue groove 211 corresponds to the second sealing surface 1311, and finally the second sealing surface 1311 and the outer wall surface of the speaker unit 2 are glued to form a waterproof structure to make the speaker unit 2 and the second sealing surface 1311. The two side walls 13 are connected in a sealed manner. The sound cavity 002 does not need to be provided with a protruding structure to shield the speaker unit 2 near the second side wall 13 to achieve a sealed connection, which increases the space of the sound cavity 002 and ensures smooth airflow. , Improve the sound quality of the speaker structure.

In this embodiment, with reference to Figures 3, 4 and 8, the speaker unit 2 includes a basin frame 21, and a top cover 24 respectively covering both sides of the basin frame 21 and enclosing the basin frame 21 to form a second containing space. And the bottom cover 25, and the magnetic circuit system 23 and the vibration system 22 housed in the second housing space, the outer wall of the basin frame 21 and the second sealing surface 1311 is recessed inward to form a glue groove 211, and the speaker unit 2 is assembled on the support When the platform 121 is on, the top cover 24 faces the bottom plate 11, and the basin frame 21 is embedded in the annular sealing surface 001. The bottom cover 25 is provided with a sealing sheet 251, and the magnetic circuit system 23 is connected to the bottom cover 25. The magnetic circuit system 23 includes a first magnet 231, a second magnet 232 arranged on the peripheral side of the first magnet 231, and The magnetic conductive plate 233 on the first magnet 231 and the second magnet 232 forms a magnetic gap between the first magnet 231 and the second magnet 232, and the vibration system 22 includes a voice coil 221 arranged in the magnetic gap, and The electrical connection structure 224 electrically connected to the voice coil 221, the diaphragm 223 connected to the voice coil 221, and the dome 222 arranged on the diaphragm 223. The electrical connection structure 224 includes a connection block 2241 fixed on the basin frame 21 and a connection The board 2242 is connected to the connecting block 2241 and the connecting board 2242 and the flexible circuit board 2243 connected to the voice coil and the buffer sheet 2244 connected to the flexible circuit board 2243. The edge of the diaphragm 223 is sealed and connected to the basin frame 21, and the top cover 24 includes a frame body 241 assembled on the basin frame 21 and a panel 242 connected to the frame body 241. The panel 242 defines a sound hole 2421, and the sound hole 2421 faces the sound cavity 002.

As shown in FIGS. 2, 4, 6, and 7, the support table 121 has a receiving surface 1211 away from the bottom plate 11, the receiving surface 1211 is connected with the first sealing surface 122, and the cover surface of the top cover 24 is attached to the receiving surface 1211. The receiving surface 1211 is parallel to the plate surface of the bottom plate 11, and the first sealing surface 122 and the second sealing surface 1311 are both perpendicular to the plate surface of the bottom plate 11. When assembling the speaker unit 2, glue can be applied to the receiving surface 1211 to seal the cover surface of the top cover 24 and the receiving surface 1211 to ensure the tightness between the speaker unit 2 and the first side wall 12. In other embodiments, if the top surface and the bottom surface of the sound cavity 002 have a certain angle, the receiving surface 1211 and the board surface of the bottom plate 11 can be adaptively arranged, as long as the receiving surface 1211 is flush with the top surface of the sound cavity 002. can.

In this embodiment, as shown in FIGS. 4-7, the inner side of the second side wall 13 protrudes toward the speaker unit 2 to form a sealing block 131, and the second sealing surface 1311 is located on the side of the sealing block 131 close to the speaker unit 2. The sealing block 131 has a bottom end surface 1312 close to the bottom plate 11, and the bottom end surface 1312 is flush with the surface of the panel 242. The distance between the bottom end surface 1312 and the bottom plate 11 is also a part of the sound cavity 002, which is equivalent to expanding the volume of the sound cavity 002. The bottom plate 11 and the bottom end surface 1312 have a sound hole 111, because the bottom end surface 1312 and the panel The board surface of the 242 is flat, so there is no raised structure in the sound cavity 002 that hinders the air flow, the air flow is more smooth, and the sound quality of the speaker structure is improved.

As shown in FIGS. 2-4, both the first side wall 12 and the second side wall 13 have a diversion inclined surface 14, and the diversion inclined surface 14 is connected to the side of the annular sealing surface 001 away from the bottom plate 11. The glue groove 211 has a first groove wall 2111 close to the bottom plate 11 and a second groove wall 2112 far away from the bottom plate 11. The edge of the second sealing surface 1311 away from the bottom plate 11 is located between the first groove wall 2111 and the second groove wall 2112. After the speaker unit 2 is installed on the supporting platform 121, the upper edge of the second sealing surface 1311 (the bottom edge of the guide slope 14) is located in the middle of the outer wall surface of the basin frame 21 and located at the first groove wall 2111 and the second groove wall Therefore, a continuous annular groove for storing glue is formed between the diversion inclined surface 14 and the outer wall surface of the basin frame 21. After the glue is injected along the diversion inclined surface 14, the peripheral side of the basin frame 21 can be Glue can be stored in the glue groove 211 recessed inwardly. After the glue is injected into the glue groove 211, the glue can penetrate downward along the bottom of the glue groove 211, so that the outer wall surface of the basin frame 21 and the second sealing surface The sealing effect between 1311 is better. Compared with the first side wall 12 and the first sealing surface 122, the glue between the second side wall 13 and the second sealing surface 1311 is more and the connection is tighter, thereby ensuring that the second side wall 13 and the second sealing surface 1311 The airtightness between them makes up for the effect of insufficient airtightness caused by the absence of the supporting platform 121 at the second side wall 13. In this embodiment, the cross section of the glue tank 211 is

Type, the extending direction of the glue tank 211 is parallel to the surface of the bottom plate 11 of the housing 1. In other embodiments, the cross section of the glue tank 211 can be U-shaped, <-shaped, C-shaped, etc., as long as it is a shape that can store glue Either way. In other embodiments, the edge of the second sealing surface 1311 away from the bottom plate 11 may be flush with the first groove wall 2111 or located between the end surface of the basin 21 and the first groove wall 2111.

In the first implementation of this embodiment, the housing 1 includes three first side walls 12 and a second side wall 13, the three first side walls 12 are connected in sequence, and the second side wall 13 is connected to the three first sides. Both ends of the wall 12 form a ring shape. Specifically, in this embodiment, the housing 1 has a cubic structure as a whole, that is, the two first side walls 12 adjacent to the second side wall 13 are parallel to each other, and the second side wall 13 is parallel to the first side wall 12 on the opposite side. Three support stands 121 on the first side wall 12 are arranged in a U shape, the sound outlet 111 is opened on the bottom plate 11 near the second side wall 13, and the sound outlet 111 can be provided with one, two, three, four, etc. When the speaker unit 2 is installed in the housing 1, it is received by the U-shaped support table 121, which can ensure the stability of the connection between the speaker unit 2 and the housing 1. A sealing block 131 is provided on the second side wall 13 Connecting to the speaker unit 2 can make the structure of the second side wall 13 near the bottom plate 11 thinner, thereby increasing the space of the sound cavity 002 and improving the sound quality of the speaker structure.

In the second implementation manner of this embodiment, the housing 1 includes two first side walls 12 and two second side walls 13, the two first side walls 12 are respectively located on opposite sides of the bottom plate 11, and the two second sides The walls 13 are respectively located on the other two opposite sides of the bottom plate 11 and connected with the two first side walls 12 to form a ring shape. Specifically, in this embodiment, the housing 1 has a cubic structure as a whole, the two first side walls 12 are parallel to each other, and the two second side walls 13 are parallel to each other, that is, the support platforms 121 on the two first side walls 12 are arranged in a = shape. When the speaker unit 2 is installed in the housing 1, the opposite sides of the top cover 24 are respectively supported by the supporting stands 121 on the two first side walls 12, which can ensure the connection between the speaker unit 2 and the housing 1. Stability, because two second side walls 13 are provided, and the structure of the two second side walls 13 near the bottom plate 11 is thinner, so both ends of the sound cavity 002 can obtain enlarged space, which further improves The sound quality of the speaker structure.

The above descriptions are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the protection of the present invention. Within range. The above are only the embodiments of the present invention. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these all belong to the present invention. The scope of protection.

Claims

A speaker structure includes a housing having a first accommodating space and a speaker unit partially accommodated in the first accommodating space. The housing includes a bottom plate extending from the periphery of the bottom plate toward the speaker unit A first side wall, a second side wall extending from the periphery of the bottom plate toward the speaker unit and connected end to end with the first side wall, and a plate along the bottom plate from the first side wall A support table that extends into the first accommodating space and supports the speaker unit in a plane direction, the bottom plate, the first side wall, and the second side wall are enclosed to form the first accommodating space, which is characterized by The first side wall has a first sealing surface connected to the supporting table on one side, and the second side wall has a second side wall closest to the speaker unit in the direction of the first housing space. A sealing surface, the second sealing surface is connected with the first sealing surface to form an annular sealing surface, the annular sealing surface surrounds the outer side of the outer wall of the speaker unit, the bottom plate, the support platform, and the The second side wall and the speaker unit are enclosed to form a sound cavity, the outer wall surface of the speaker unit corresponding to the second sealing surface is recessed inward to form a glue groove, and the second sealing surface is in contact with the outer wall. The wall is glued to form a waterproof structure.
The speaker structure according to claim 1, wherein the speaker unit includes a basin frame, a top cover respectively covering both sides of the basin frame and enclosing the basin frame to form a second containing space, and A bottom cover, a magnetic circuit system and a vibration system housed in the second accommodating space; the outer wall of the basin frame corresponding to the second sealing surface is recessed inward to form the glue groove.
The speaker structure according to claim 1, wherein the inner side of the second side wall protrudes toward the speaker unit to form a sealing block, and the second sealing surface is located near the speaker of the sealing block. On the monomer side, the sealing block has a bottom end surface close to the bottom plate, and the bottom end surface is flush with the side of the speaker unit close to the bottom plate.
The loudspeaker structure according to claim 1, wherein the first side wall and the second side wall both have a diversion slope, and the diversion slope and the annular sealing surface are away from the bottom plate. Connected.
The speaker structure according to claim 4, wherein the glue groove has a first groove wall close to the bottom plate and a second groove wall far away from the bottom plate, and the second sealing surface is far from the bottom plate. The edge of is located between the first groove wall and the second groove wall.
The speaker structure according to claim 1, wherein the support platform has a receiving surface away from the bottom plate, the receiving surface is connected to the first sealing surface, and the speaker unit is close to the bottom plate. One side is attached to the receiving surface.
The speaker structure according to claim 6, wherein the receiving surface is parallel to the board surface of the bottom plate, and the first sealing surface and the second sealing surface are both perpendicular to the board surface of the bottom plate.
An electronic device, characterized by comprising the speaker structure according to any one of claims 1-7.