Sound equipment

Abstract

The utility model provides a sound box which comprises a loudspeaker, a telescopic shell and a bottom shell, the telescopic shell and the bottom shell are connected in the axial direction of the loudspeaker and define a sound cavity, the length of the telescopic shell in the axial direction of the loudspeaker is adjustable so as to adjust the volume of the sound cavity, and the loudspeaker is arranged in the telescopic shell and located in the sound cavity. The sound box provided by the utility model has the advantages of good portability and high bass quality.

Description

Technical Field

[0001] The present application belongs to the technical field of loudspeakers, and more specifically, to a speaker. Background Art

[0002] A speaker is an electronic device used to play sound. It usually has a sound cavity. The size of the cavity directly affects the resonance effect of the sound. A larger cavity can provide more space for the bass waves to fully resonate and diffuse inside it, making the bass deeper and more powerful, thereby improving the sound quality of the speaker.

[0003] However, a larger sound cavity requires the speaker to have a larger volume, which affects the portability of the speaker. Therefore, in the related art, there is a conflict between the portability of the speaker and the size of the sound cavity. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a speaker to solve the technical problem in the prior art that there is a conflict between the portability of the speaker and the size of the sound cavity.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a sound system, including a speaker, a telescopic shell and a bottom shell, the telescopic shell and the bottom shell are connected along the axial direction of the speaker and enclose a sound cavity, the length of the telescopic shell along the axial direction of the speaker is adjustable to adjust the volume of the sound cavity, and the speaker is arranged in the telescopic shell so that the speaker is located in the sound cavity.

[0006] The beneficial effects of the sound system provided by the present application are as follows: compared with the prior art, on the one hand, the speaker of the sound system provided by the present application is arranged in a telescopic shell, and the volume of the sound cavity can be adjusted by adjusting the length of the telescopic shell. When the telescopic shell is extended, the volume of the sound cavity is expanded to improve the sound quality of the sound system, and when the telescopic shell is shortened, the volume of the sound system is reduced to improve the portability, so that the sound system provided by the present application has the advantages of high portability and large sound cavity size; on the other hand, the volume of the sound cavity of the sound system provided by the present application is adjustable, so that the minimum resonance frequency between the bottom shell and part of the telescopic shell and the speaker is adjustable, thereby making the sound system of the embodiment of the present application have a high enhancement effect on low-frequency sounds in different frequency bands, thereby improving the sound quality of the sound system of the embodiment of the present application.

[0007] In some embodiments of the present application, the telescopic shell includes a seat ring and a telescopic section, the seat ring is sleeved on the outer peripheral side of the speaker, the telescopic section is connected between the seat ring and the bottom shell, and the length of the telescopic section along the axial direction of the speaker is adjustable.

[0008] In some embodiments of the present application, a first annular groove is provided at one end of the telescopic section close to the seat ring, the first annular groove extends along the outer peripheral side of the seat ring, and the opening of the first annular groove faces the bottom shell, and a first annular flange is provided at one end of the seat ring away from the bottom shell, and the first annular flange is fitted in the first annular groove.

[0009] In some embodiments of the present application, the telescopic shell also includes an end cover, which is arranged on the side of the seat ring facing away from the bottom shell, and a second annular flange is provided at one end of the end cover facing the seat ring, a third annular flange is provided on the inner side of the first annular flange, and the second annular flange is fitted between the first annular flange and the third annular flange.

[0010] In some embodiments of the present application, the bottom shell is provided with an opening, the radial dimension of the seat ring in the speaker is smaller than the radial dimension of the opening in the speaker, and part of the telescopic section is sleeved on the outer peripheral side of the seat ring.

[0011] In some embodiments of the present application, the bottom shell includes a countersunk portion, and the opening is arranged at the bottom of the countersunk portion.

[0012] In some embodiments of the present application, the speaker includes a paper cone and a driving member, the paper cone is connected to the telescopic shell and the opening direction of the paper cone is away from the sound cavity, and the driving member is connected to one end of the paper cone facing the inner side of the sound cavity.

[0013] In some embodiments of the present application, a second annular groove is provided at one end of the telescopic section close to the bottom shell, the second annular groove extends along the circumference of the speaker and the opening of the second annular groove faces the seat ring, and a fourth annular flange is provided on the inner wall of the bottom shell, the opening is provided on the inner side of the fourth annular flange, and the fourth annular flange fits in the second annular groove.

[0014] In some embodiments of the present application, a retaining ring is provided in the bottom shell, and the retaining ring extends along the circumference of the speaker. The retaining ring can press a portion of the telescopic section against the fourth annular flange.

[0015] In some embodiments of the present application, a circuit board is provided in the bottom shell, the circuit board is located in the sound cavity, and an avoidance hole is provided on the circuit board to avoid the speaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic diagram of the first state structure of the speaker provided in an embodiment of the present application;

[0018] Figure 2 A schematic diagram of the second state structure of the speaker provided in an embodiment of the present application;

[0019] Figure 3 for Figure 1 A first cross-sectional schematic diagram at the middle BB;

[0020] Figure 4 for Figure 2 A first cross-sectional schematic diagram at AA in the middle;

[0021] Figure 5 for Figure 1 A second cross-sectional schematic diagram at the middle BB;

[0022] Figure 6 for Figure 2 A second cross-sectional view at AA in the middle;

[0023] Figure 7 for Figure 5 A partial enlarged schematic diagram of point C in the middle;

[0024] Figure 8 for Figure 6 A local enlarged schematic diagram of point D in the middle.

[0025] Among them, the reference numerals in the figure are:

[0026] 100. Audio;

[0027] 10. telescopic shell; 11. seat ring; 111. first annular flange; 112. second annular flange; 12. telescopic section; 121. first annular groove; 122. second annular groove; 1201. first section; 1202. second section; 1203. third section; 13. end cover; 131. third annular flange;

[0028] 20. bottom shell; 21. fourth annular flange; 22. retaining ring; 23. circuit board; 231. avoidance hole; 24. open mouth; 25. countersunk hole;

[0029] 30. Speaker; 31. Paper cone; 32. Driving part. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] Please also read Figures 1 to 6 Now, the speaker 100 provided in the embodiment of the present application is described. The speaker 100 provided in the embodiment of the present application includes a speaker 30, a telescopic shell 10 and a bottom shell 20.

[0035] The telescopic shell 10 and the bottom shell 20 are connected along the axial direction of the speaker 30 and enclose a sound cavity 14 . The length of the telescopic shell 10 along the axial direction of the speaker 30 is adjustable to adjust the volume of the sound cavity 14 . The speaker 30 is disposed in the telescopic shell 10 and is located in the sound cavity 14 .

[0036] Specifically, the axial direction of the speaker 30 is as follows: Figure 1 and Figure 2 As shown in the x direction, the telescopic shell 10 is located on one side of the bottom shell 20 along the x direction, and the inner cavity of the telescopic shell 10 is connected with the inner cavity of the bottom shell 20 to form a sound cavity 14. The length of the telescopic shell 10 along the x direction is adjustable to adjust the volume of the inner cavity of the telescopic shell 10, thereby adjusting the volume of the sound cavity 14.

[0037] The speaker 30 is connected to the inner wall of the telescopic shell 10 so that the speaker 30 is located in the sound cavity 14. When the telescopic shell 10 is extended along the x direction, the speaker 30 moves away from the bottom shell 20 along the x direction to obtain a larger sound cavity 14 and improve the resonance effect of the speaker 30 under bass. When the telescopic shell 10 is shortened along the x direction, the speaker 30 moves close to the bottom shell 20 along the x direction to reduce the axial size of the speaker 100 provided in the present application, thereby improving the portability of the speaker 100 provided in the present application.

[0038] The beneficial effects of the sound system 100 provided by the present application are as follows: compared with the prior art, on the one hand, the speaker 30 of the sound system 100 provided by the present application is arranged in the telescopic shell 10, and the volume of the sound cavity 14 can be adjusted by adjusting the length of the telescopic shell 10, such as Figure 2 As shown, when the telescopic shell 10 is extended, the volume of the sound cavity 14 is expanded to improve the sound quality of the speaker 100. Figure 1 As shown, when the telescopic shell 10 is shortened, the volume of the speaker 100 is reduced to improve portability, so that the speaker 100 provided in the present application has the advantages of high portability and a larger sound cavity 14 size; on the other hand, the volume of the sound cavity 14 of the speaker 100 provided in the present application is adjustable, so that the minimum resonance frequency between the bottom shell 20 and part of the telescopic shell 10 and the speaker 30 is adjustable, thereby making the speaker 100 of the embodiment of the present application have a higher enhancement effect on low-frequency sounds in different frequency bands, thereby improving the sound quality of the speaker 100 of the embodiment of the present application.

[0039] Please refer to Figure 3 and Figure 4 In some embodiments of the present application, the telescopic shell 10 includes a seat ring 11 and a telescopic section 12. The seat ring 11 is sleeved on the outer peripheral side of the speaker 30. The telescopic section 12 is connected between the seat ring 11 and the bottom shell 20. The length of the telescopic section 12 along the axial direction of the speaker 30 is adjustable.

[0040] Specifically, the seat ring 11 is made of a hard material, the telescopic section 12 is made of an elastic material or a flexible material, and part of the telescopic section 12 can be flipped in the x direction, so that the length of the telescopic section 12 is adjustable. The seat ring 11 is closed and extends along the circumference of the speaker 30 and is sleeved on the outer peripheral side of the speaker 30. One end of the telescopic section 12 is closed and extends along the circumference of the speaker 30, so that the speaker 30 is fixed to one end of the telescopic section 12 through the seat ring 11, and the other end of the telescopic section 12 extends along the axial direction of the speaker 30 to the bottom shell 20. The telescopic section 12 is along the axial direction of the speaker 30, that is, Figure 3 and Figure 4 The size in the x direction is adjustable, so that the size of the telescopic shell 10 along the x direction is adjustable.

[0041] Thus, the speaker 30 is fixed to one end of the telescopic section 12 by the seat ring 11 to protect the speaker 30 in the radial direction of the speaker 30. The other end of the telescopic section 12 is connected to the bottom shell 20, so that the length of the telescopic shell 10 can be changed by only changing the length of the telescopic section 12, thereby realizing the adjustment of the size of the sound cavity 14 and the adjustment of the outline size of the speaker 100 provided in the present application.

[0042] In some embodiments of the present application, Figure 5 and Figure 6 As shown, the telescopic section 12 includes a first section 1201, a second section 1202 and a third section 1203, and the first section 1201, the second section 1202 and the third section 1203 are all annular cylindrical structures, and the first section 1201, the second section 1202 and the third section 1203 are coaxially arranged along the axis of the speaker 30, the second section 1202 is connected between the first section 1201 and the third end, and a fold is provided between the first section 1201 and the second section 1202, so that the first section 1201 can be folded relative to the second section 1202, and a fold is provided between the second section 1202 and the third section 1203, so that the second section 1202 can be folded relative to the third section 1203, and the length of the telescopic section 12 along the axial direction of the speaker 30 is the distance between the end of the first section 1201 away from the second section 1202 and the end of the third section 1203 away from the second section 1202. Figure 5 and Figure 6 The spacing in the x direction.

[0043] like Figure 6 As shown, when the telescopic section 12 is extended, the first section 1201 and the second section 1202 are located on the same side of the third section 1203. At this time, the length of the telescopic section 12 along the axial direction of the speaker 30 is the sum of the length dimension of the first section 1201 along the x direction, the length dimension of the second section 1202 along the x direction, and the length dimension of the third section 1203 along the x direction; Figure 5 As shown, when the telescopic section 12 is shortened, the second section 1202 flips to the inner side of the third end so that part of the first section 1201 also moves to the inner side of the third section 1203. At this time, the length dimension of the telescopic section 12 is the sum of the length dimension of the first section 1201 along the x direction and the length dimension of the third section 1203 along the x direction minus the length dimension of the second section 1202 along the x direction.

[0044] Therefore, the length of the telescopic section 12 in the axial direction of the speaker 30 can be adjusted by folding the second section 1202 .

[0045] Please follow Figure 5 , Figure 7In some embodiments of the present application, a first annular groove 121 is provided at one end of the telescopic section 12 close to the seat ring 11, the first annular groove 121 extends along the outer peripheral side of the seat ring 11, and the opening of the first annular groove 121 faces the bottom shell 20, and a first annular flange 111 is provided at one end of the seat ring 11 away from the bottom shell 20, and the first annular flange 111 is fitted in the first annular groove 121.

[0046] Specifically, one end of the telescopic section 12 close to the seat ring 11 is bent toward the inner side of the telescopic section 12 to form a first annular groove 121, and the opening of the first annular groove 121 faces the other end of the telescopic section 12, i.e., the bottom shell 20. One end of the seat ring 11 is provided with a first annular flange 111, and the first annular flange 111 extends in a direction opposite to the opening direction of the first annular groove 121, and the inner diameter dimension of the first annular flange 111 is the same as the inner diameter dimension of the first annular groove 121, and the outer diameter dimension of the first annular flange 111 is the same as the outer diameter dimension of the first annular groove 121, so that the first annular flange 111 can fit into the first annular groove 121.

[0047] The first annular flange 111 is Figure 7 The length dimension in the x direction is the same as that of the first annular groove 121. Figure 7 The depth dimension in the x direction is the same, so that the end of the first annular flange 111 can abut against the bottom of the first annular groove 121, thereby stopping the seat ring 11 at the end of the telescopic section 12. On the other hand, the contact area between the telescopic section 12 and the seat ring 11 is increased, thereby preventing relative sliding between the telescopic section 12 and the seat ring 11.

[0048] Thus, the seat ring 11 and the telescopic section 12 are connected by the telescopic section 12 being sleeved on the outer peripheral side of the seat ring 11, and the seat ring 11 and the telescopic section 12 are connected by the cooperation of the first annular flange 111 and the first annular groove 121 to avoid relative movement of the seat ring 11 and the telescopic section 12 in the axial direction of the speaker 30, thereby fixing the seat ring 11 at the end of the telescopic section 12.

[0049] Please refer to Figure 3 , Figure 7 In some embodiments of the present application, the telescopic shell 10 also includes an end cover 13, which is arranged on the side of the seat ring 11 away from the bottom shell 20, and a second annular flange 131 is provided on the end of the end cover 13 facing the seat ring 11, and a third annular flange 112 is provided on the inner side of the first annular flange 111, and the second annular flange 131 is fitted between the first annular flange 111 and the third annular flange 112.

[0050] Specifically, the end cover 13 extends in a plane orthogonal to the axial direction of the speaker 30, the end cover 13, the seat ring 11 and the telescopic section 12 form a telescopic shell 10, and the end cover 13 covers the side of the speaker 30 away from the bottom shell 20 to protect the speaker 30. The end cover 13 can be a flat plate structure or a mesh structure. The outer edge of the end cover 13 is provided with a second annular flange 131, the second annular flange 131 extends in a direction toward the bottom shell 20, and the second annular flange 131 extends in a closed manner along the circumference of the speaker 30. The seat ring 11 is also provided with a third annular flange 112, and the third annular flange 112 The third annular flange 112 is coaxially arranged with the first annular flange 111, and the outer diameter of the third annular flange 112 is smaller than the inner diameter of the first annular flange 111, and the inner diameter of the second annular flange 131 is larger than the outer diameter of the third annular flange 112 and smaller than the inner diameter of the first annular flange 111, so that the second annular flange 131 can be fitted between the first annular flange 111 and the third annular flange 112, and the partial telescopic section 12 is located on the inner side of the first annular flange 111, and the outer wall of the second annular flange 131 can be pressed against the inner side of the partial telescopic section 12, thereby connecting the end cover 13 to the telescopic section 12.

[0051] Therefore, on the one hand, the end cover 13 can protect the side of the speaker 30 facing away from the bottom shell 20, and on the other hand, the end cover 13 can be supported against the inner side of the first annular flange 111, thereby enhancing the radial strength of the seat ring 11 in the speaker 30, thereby improving the support and protection effect of the seat ring 11 on the speaker 30.

[0052] Please refer to Figure 3 and Figure 4 In some embodiments of the present application, the bottom shell 20 is provided with an opening 24 , the radial dimension of the seat ring 11 in the speaker 30 is smaller than the radial dimension of the opening 24 in the speaker 30 , and a portion of the telescopic section 12 is sleeved on the outer peripheral side of the seat ring 11 .

[0053] Specifically, the opening 24 is provided on the side of the bottom shell 20 facing the telescopic shell 10, and the inner cavity of the bottom shell 20 and the inner cavity of the telescopic shell 10 are connected through the opening 24 to form the sound cavity 14, so that the radial dimension of the connection between the telescopic shell 10 and the bottom shell 20 along the radial direction of the speaker 30 is greater than the radial dimension of the seat ring 11 along the speaker 30.

[0054] As a result, the radial dimension of the telescopic shell 10 in the direction from the seat ring 11 to the bottom shell 20 of the speaker 30 gradually increases. On the one hand, after the telescopic shell 10 is extended, the inner diameter of the inner cavity of the telescopic shell 10 gradually increases in the direction from the speaker 30 to the bottom shell 20, and the radial dimension of the sound cavity 14 gradually increases in the direction away from the speaker 30, so that the telescopic shell 10 forms a trumpet-shaped structure to transmit the sound waves generated by the speaker 30 to the bottom shell 20 and resonate, thereby improving the loudness and low-frequency sound quality of the audio 100 of the embodiment of the present application; on the other hand, after the telescopic shell 10 is shortened, the telescopic shell 10 still has a trumpet-shaped structure. Compared with the prior art, the radial dimension of the telescopic shell 10 gradually decreases in the direction away from the speaker 30. After the telescopic shell 10 of the audio 100 provided in the present application is shortened, it still has a larger volume of the sound cavity 14, so that the sound provided by the present application can have high sound quality while being portable.

[0055] Please refer to Figure 3 and Figure 4 In some embodiments of the present application, the bottom shell 20 includes a countersunk portion 25 , and the opening 24 is disposed at the bottom of the countersunk portion 25 .

[0056] Specifically, the countersunk portion 25 is provided at one end of the bottom shell 20 facing the telescopic shell 10, the countersunk portion 25 is recessed toward the inside of the bottom shell 20, and the width of the countersunk portion 25 in the radial direction of the speaker 30 gradually decreases in the direction close to the opening 24, so that the countersunk portion 25 is formed as shown in FIG. Figure 3 and Figure 4 The funnel-shaped structure shown.

[0057] Therefore, on the one hand Figure 3 As shown, when the telescopic shell 10 is shortened, the speaker 30 and the telescopic section 12 are retracted into the inner side of the countersunk portion 25, and the bottom shell 20 at the edge of the countersunk portion 25 protects the speaker 30 and the shortened telescopic shell 10; on the other hand, after the telescopic shell 10 is retracted into the countersunk portion 25, the countersunk portion 25 forms an annular recess on the outer peripheral side of the telescopic shell 10, so that the operator can stretch the outer peripheral side of the telescopic shell 10 with his fingers.

[0058] Please refer to Figure 3 and Figure 4 In some embodiments of the present application, the speaker 30 includes a paper cone 31 and a driving member 32, the paper cone 31 is connected to the telescopic shell 10 and the opening direction of the paper cone 31 is away from the sound cavity 14, and the driving member 32 is connected to one end of the paper cone 31 facing the inner side of the sound cavity 14.

[0059] Specifically, the paper cone 31 and the driving member 32 are arranged along Figure 3The paper cone 31 is arranged in the middle x direction, and is located between the driving member 32 and the seat ring 11. The paper plate is a conical or elliptical cone structure. The inner diameter of the paper cone 31 gradually increases along the direction approaching the opening, and the inner diameter of the paper cone 31 gradually decreases along the direction approaching the driving member 32. The driving member 32 can drive the paper cone 31 to vibrate to make a sound. When the paper cone 31 makes a low-frequency sound, the sound cavity 14 resonates with the paper cone 31 to increase the strength of the speaker 30 in the bass region.

[0060] As a result, the sound cavity 14 is located on the other side of the opening direction of the paper cone 31, so that the sound cavity 14 serves as the back cavity of the speaker 30. When the telescopic shell 10 is extended to increase the volume of the sound cavity 14, the lowest frequency of resonance between the bottom shell 20 and part of the telescopic shell 10 and the speaker 30 is reduced, thereby enhancing the low-frequency sensitivity of the speaker 100 of the embodiment of the present application, thereby improving the low-frequency performance of the speaker 100 of the embodiment of the present application.

[0061] Please refer to Figure 8 In some embodiments of the present application, a second annular groove 122 is provided at one end of the telescopic section 12 close to the bottom shell 20, the second annular groove 122 extends along the circumference of the speaker 30 and the opening of the second annular groove 122 faces the seat ring 11, and a fourth annular flange 21 is provided on the inner wall of the bottom shell 20, the opening 24 is provided on the inner side of the fourth annular flange 21, and the fourth annular flange 21 is fitted in the second annular groove 122.

[0062] Specifically, the second annular groove 122 is provided at one end of the telescopic section 12 away from the seat ring 11, and the opening direction of the second annular groove 122 faces the seat ring 11. The fourth annular flange 21 is provided on the inner wall of the bottom shell 20 and extends along the outer peripheral side of the opening 24 in a closed manner. The fourth annular flange 21 is fitted in the second annular groove 122, so that the end of the telescopic section 12 passes through the opening 24 and is fixed to the inner wall of the bottom shell 20.

[0063] Therefore, the opening of the second annular groove 122 faces the seat ring 11, and the opening of the first annular groove 121 faces the bottom shell 20, so that the opening direction of the first annular groove 121 and the opening direction of the second annular groove 122 are opposite to each other in the axial direction of the speaker 30. On the one hand, it can prevent the telescopic section 12 from being separated from the bottom shell 20 when stretched, and on the other hand, it can prevent the telescopic section 12 from being separated from the seat ring 11 when stretched.

[0064] Please refer to Figure 3 and Figure 4 In some embodiments of the present application, a retaining ring 22 is provided in the bottom shell 20 . The retaining ring 22 extends along the circumference of the speaker 30 . The retaining ring 22 can press part of the telescopic section 12 against the fourth annular flange 21 .

[0065] Specifically, the retaining ring 22 is located in the bottom shell 20, and the retaining ring 22 extends along the circumferential closure of the opening 24, the retaining ring 22 and the fourth annular flange 21 are arranged axially with respect to the speaker 30, and the bottom of the second annular groove 122 is located between the retaining ring 22 and the fourth annular flange 21, so that the retaining ring 22 can press the bottom of the second annular groove 122 against the fourth annular flange 21.

[0066] Therefore, the end of the telescopic section 12 is fixed to the inner wall of the bottom shell 20 by the retaining ring 22, which can prevent the telescopic section 12 from being separated from the bottom shell 20 when compressed for a short time, and prevent the telescopic section 12 from falling out from the inside of the opening 24 when stretched, thereby improving the stability of the telescopic section 12 supporting the speaker 30.

[0067] Please refer to Figure 3 and Figure 4 In some embodiments of the present application, a circuit board 23 is provided in the bottom shell 20 , the circuit board 23 is located in the sound cavity 14 , and an avoidance hole 231 is provided on the circuit board 23 to avoid the speaker 30 .

[0068] Specifically, the circuit board 23 extends in a plane orthogonal to the axial direction of the speaker 30, and the projection of one end of the speaker 30 close to the bottom shell 20 in the axial direction of the speaker 30 falls within the avoidance hole 231. When the telescopic section 12 is shortened, the end of the speaker 30 close to the bottom shell 20 moves to the inner side of the bottom shell 20 and fits into the avoidance hole 231.

[0069] Therefore, on the one hand, by providing the avoidance hole 231, the end of the speaker 30 can pass through the circuit board 23, thereby reducing the risk of the speaker 100 provided by the present application being in the state of ... Figure 3 and Figure 4 The x-direction dimension improves the portability of the audio system 100 provided in the present application. On the other hand, when the end of the speaker 30 close to the bottom shell 20 is fitted in the avoidance hole 231, the circuit board 23 extends along the outer peripheral side of the speaker 30 close to one end of the bottom shell 20 to limit the radial direction of the speaker 30.

[0070] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A sound system, characterized in that: include: speaker; A telescopic shell and a bottom shell, wherein the telescopic shell and the bottom shell are connected along the axial direction of the speaker and enclose a sound cavity, the length of the telescopic shell along the axial direction of the speaker is adjustable to adjust the volume of the sound cavity, and the speaker is arranged in the telescopic shell so that the speaker is located in the sound cavity.

2. The speaker according to claim 1, characterized in that: The telescopic shell includes a seat ring and a telescopic section. The seat ring is sleeved on the outer peripheral side of the speaker. The telescopic section is connected between the seat ring and the bottom shell. The length of the telescopic section along the axial direction of the speaker is adjustable.

3. The sound system according to claim 2, characterized in that: A first annular groove is provided at one end of the telescopic section close to the seat ring, the first annular groove extends along the outer peripheral side of the seat ring, and the opening of the first annular groove faces the bottom shell. A first annular flange is provided at one end of the seat ring away from the bottom shell, and the first annular flange is fitted in the first annular groove.

4. The sound system according to claim 3, characterized in that: The telescopic shell also includes an end cover, which is arranged on the side of the seat ring away from the bottom shell, and a second annular flange is provided on the end of the end cover facing the seat ring, a third annular flange is provided on the inner side of the first annular flange, and the second annular flange is fitted between the first annular flange and the third annular flange.

5. The sound system according to claim 2, characterized in that: The bottom shell is provided with an opening, the radial dimension of the seat ring is smaller than the radial dimension of the opening in the speaker, and part of the telescopic section is sleeved on the outer peripheral side of the seat ring.

6. The sound system according to claim 5, characterized in that: The bottom shell includes a countersunk portion, and the opening is arranged at the bottom of the countersunk portion.

7. The sound system according to claim 5, characterized in that: The speaker comprises a paper cone and a driving member, wherein the paper cone is connected to the telescopic shell and the opening direction of the paper cone is away from the sound cavity, and the driving member is connected to one end of the paper cone facing the inner side of the sound cavity.

8. The sound system according to claim 5, characterized in that: A second annular groove is provided at one end of the telescopic section close to the bottom shell, the second annular groove extends along the circumference of the speaker and the opening of the second annular groove faces the seat ring, a fourth annular flange is provided on the inner wall of the bottom shell, the opening is provided on the inner side of the fourth annular flange, and the fourth annular flange fits in the second annular groove.

9. The sound system according to claim 8, characterized in that: A retaining ring is provided in the bottom shell, and the retaining ring extends along the circumference of the speaker. The retaining ring can press part of the telescopic section against the fourth annular flange.

10. The sound system according to any one of claims 1 to 9, characterized in that: A circuit board is arranged in the bottom shell, the circuit board is located in the sound cavity, and an avoidance hole is arranged on the circuit board to avoid the speaker.

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