Plastic sound box not easy to distort

Abstract

The utility model relates to the technical field of sound equipment, in particular to a plastic sound equipment not easy to distort, which comprises a casing made of plastic materials and a loudspeaker unit, an upper cavity shell and a lower cavity shell are arranged in the casing, the periphery of the bottom of the upper cavity shell extends downwards to form an outer ring wall, the periphery of the top of the lower cavity shell extends upwards to form an inner ring wall, and the loudspeaker unit is arranged in the outer ring wall. The upper cavity shell is arranged on the lower cavity shell, the outer ring wall of the upper cavity shell sleeves the outer side of the inner ring wall of the lower cavity shell, the upper cavity shell and the lower cavity shell are enclosed to form a closed sounding cavity, a sounding hole is formed in the bottom of the lower cavity shell, the loudspeaker unit is arranged in the closed sounding cavity, and one end, close to the vibrating diaphragm, of the loudspeaker unit is arranged at the position of the sounding hole; the loudspeaker is provided with the independent sounding cavity, is not easy to distort, is good in tone quality, and can be well applied to the market.

Description

Technical fields:

[0001] This utility model relates to the field of audio technology, and in particular to a plastic speaker that is not easily distorted. Background technology:

[0002] Speakers are categorized into wooden speakers, metal speakers, and plastic speakers. Plastic speakers have the following advantages: 1. Lightweight: Plastic speakers are made of lightweight materials, making them easy to move and transport; 2. Diverse shapes: Plastic is malleable, allowing for the creation of various unique shapes to meet different visual aesthetic needs; 3. Low cost: Plastic products are inexpensive and have high production efficiency, making plastic speakers more affordable compared to speakers made of other materials.

[0003] Most plastic speakers on the market have a simple structure, consisting only of a plastic casing and a speaker unit inside the casing. They lack an independent sound chamber, are prone to distortion, and have poor sound quality. There is an urgent need for a plastic speaker that is less prone to distortion. Utility model content:

[0004] The purpose of this invention is to provide a plastic speaker that is not easily distorted, has an independent sound cavity, is not easily distorted, has good sound quality, and is well-suited for the market, addressing the shortcomings of existing technologies.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a plastic speaker that is not prone to distortion, comprising a housing and a speaker unit made of plastic material. The housing is provided with an upper cavity shell and a lower cavity shell. The bottom of the upper cavity shell has an outer ring wall extending downward around its perimeter, and the top of the lower cavity shell has an inner ring wall extending upward around its perimeter. The upper cavity shell is disposed on the lower cavity shell, and the outer ring wall of the upper cavity shell is fitted outside the inner ring wall of the lower cavity shell. The upper cavity shell and the lower cavity shell together form a sealed sound-emitting cavity. The bottom of the lower cavity shell is formed with a sound outlet hole. The speaker unit is disposed in the sealed sound-emitting cavity, and the end of the speaker unit near the diaphragm is disposed at the position of the sound outlet hole.

[0006] A further improvement to the above scheme is that the upper cavity shell is formed with multiple female screw ends, and the lower cavity shell is formed with male screw ends that are the same number and position as the female screw ends.

[0007] A further improvement to the above solution is that the housing includes a body and a cover installed on the body.

[0008] A further improvement to the above solution is that the bottom of the body is formed with multiple sound-emitting mesh holes.

[0009] A further improvement to the above solution is that the top of the machine body is formed with multiple buckle protrusions, and the bottom of the cover is formed with buckle ears that are the same number and position as the buckle protrusions. Each buckle ear is formed with a buckle groove that matches the buckle protrusion. When the cover is placed on the machine body, each buckle protrusion is buckled and connected to the corresponding buckle groove.

[0010] A further improvement to the above solution is that the bottom of the body is formed with a plurality of lower locking screw posts, and the bottom of the lower cavity shell is formed with upper locking screw posts of the same number and corresponding position as the lower locking screw posts.

[0011] A further improvement to the above solution is that the bottom of the upper locking screw post is formed with a slot, and each lower locking screw post is inserted into the slot of the corresponding upper locking screw post.

[0012] A further improvement to the above scheme is that reinforcing ribs are formed on the inner four sides of the fuselage.

[0013] A further improvement to the above scheme is that the top of the upper cavity shell is recessed downward to form a storage groove.

[0014] A further improvement to the above solution is that the upper cavity shell and the lower cavity shell are respectively made of plastic material.

[0015] The beneficial effects of this utility model are as follows: This utility model provides a plastic speaker that is not prone to distortion, including a housing and a speaker unit made of plastic material. The housing is provided with an upper cavity shell and a lower cavity shell. The bottom of the upper cavity shell has an outer ring wall extending downward around its perimeter, and the top of the lower cavity shell has an inner ring wall extending upward around its perimeter. The upper cavity shell is disposed on the lower cavity shell and the outer ring wall of the upper cavity shell is fitted outside the inner ring wall of the lower cavity shell. The upper cavity shell and the lower cavity shell together form a sealed sound-emitting cavity. The bottom of the lower cavity shell is formed with a sound outlet hole. The speaker unit is disposed in the sealed sound-emitting cavity, and the end of the speaker unit near the diaphragm is disposed at the position of the sound outlet hole.

[0016] Compared to existing plastic audio equipment where the speaker unit is directly housed in the casing, this invention features a sealed sound-emitting cavity within the casing, with the speaker unit housed within this sealed cavity. By separating the sealed sound-emitting cavity from the casing, the closed, independent cavity design better controls resonance and a certain degree of sound field diffusion, blocks complementary airflow before and after the diaphragm, and can also eliminate acoustic short circuits in the speaker unit, suppress acoustic resonance, widen its frequency response range, and reduce distortion. This invention, with its independent sound-emitting cavity, is less prone to distortion, has better sound quality, and is well-suited for the market. Attached image description:

[0017] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0018] Figure 2 This is an exploded structural diagram of the present invention.

[0019] Figure 3 This is a schematic diagram of the lower cavity shell of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Body; 111. Sound outlet mesh; 112. Snap-on protrusion; 113. Lower locking screw post; 114. Reinforcing rib; 12. Cover; 121. Snap-on ear; 122. Snap-on slot; 2. Speaker unit; 3. Upper cavity shell; 31. Female locking screw end; 32. Outer ring wall; 33. Storage slot; 4. Lower cavity shell; 41. Male locking screw end; 42. Inner ring wall; 43. Sound outlet hole; 44. Upper locking screw post; 45. Slot; 5. Sealed sound-emitting cavity. Detailed implementation method:

[0021] The present invention will be further described below with reference to the accompanying drawings, such as... Figure 1-3 As shown, this utility model includes a housing 1 made of plastic material and a speaker unit 2. The housing 1 has an upper cavity shell 3 and a lower cavity shell 4. The bottom periphery of the upper cavity shell 3 is formed with an outer ring wall 32 extending downwards, and the top periphery of the lower cavity shell 4 is formed with an inner ring wall 42 extending upwards. The upper cavity shell 3 is disposed on the lower cavity shell 4, and the outer ring wall 32 of the upper cavity shell 3 is fitted outside the inner ring wall 42 of the lower cavity shell 4. The upper cavity shell 3 and the lower cavity shell 4 together form a sealed sound-emitting cavity 5. The bottom of the lower cavity shell 4 is formed with a sound outlet 43. The speaker unit 2 is disposed in the sealed sound-emitting cavity 5, and the end of the speaker unit 2 near the diaphragm is disposed at the sound outlet 43. Compared to existing plastic speakers where the speaker unit 2 is directly installed in the housing 1, this invention features a sealed sound-emitting cavity 5 inside the housing 1, with the speaker unit 2 installed within the sealed sound-emitting cavity 5. By separating the sealed sound-emitting cavity 5 from the housing 1, the closed independent cavity design is more conducive to controlling resonance and a certain degree of sound field diffusion, blocking the complementary airflow before and after the diaphragm. The closed cavity can also be used to eliminate acoustic short circuits of the speaker unit 2, suppress its acoustic resonance, widen its frequency response range, and reduce distortion. This invention has an independent sound-emitting cavity, is less prone to distortion, has better sound quality, and is well-suited for the market.

[0022] This invention, through its structural design where the outer ring wall 32 of the upper cavity shell 3 is fitted onto the outer side of the inner ring wall 42 of the lower cavity shell 4, improves the airtightness of the sealed sound cavity 5 formed by the upper cavity shell 3 and the lower cavity shell 4, thereby enhancing sound quality. Furthermore, the upper cavity shell 3 has multiple female screw ends 31, and the lower cavity shell 4 has male screw ends 41 in the same number and corresponding positions as the female screw ends 31. By locking the male screw ends 41 and the female screw ends 31 together with screws, the sealed sound cavity 5 formed by the upper cavity shell 3 and the lower cavity shell 4 can be further tightened and sealed, further improving the airtightness of the sealed sound cavity 5 and thus further enhancing sound quality.

[0023] The housing 1 includes a body 11 and a cover 12 covering the body 11. The bottom of the body 11 has multiple sound-emitting mesh holes 111. The top of the body 11 has multiple latching protrusions 112. The bottom of the cover 12 has latching ears 121 in the same number and corresponding positions as the latching protrusions 112. Each latching ear 121 has a latching groove 122 that mates with the latching protrusion 112. When the cover 12 is placed on the body 11, each latching protrusion 112 is latched and connected to the corresponding latching groove 122.

[0024] The bottom of the body 11 is formed with multiple lower locking screw posts 113, and the bottom of the lower cavity shell 4 is formed with the same number of upper locking screw posts 44 as the lower locking screw posts 113 and in the same position. By connecting the lower locking screw posts 113 and the upper locking screw posts 44 with screws, the assembly between the lower cavity shell 4 and the body 11 can be realized quickly and conveniently.

[0025] The bottom of the locking screw post 44 is formed with a slot 45, and each locking screw post 113 is inserted into the slot 45 of the corresponding locking screw post 44. The slot 45 not only makes it easier to position and install the lower cavity shell 4 and the body 11, but also makes the lower cavity shell 4 more firmly connected to the body 11 as one unit.

[0026] The inner sides of the fuselage 11 are respectively formed with reinforcing ribs 114. The setting of reinforcing ribs 114 can improve the structural strength of the fuselage 11, thereby ensuring that the fuselage 11 is not easily deformed.

[0027] The top of the upper cavity shell 3 is recessed downward to provide a storage slot 33, which can be used to place power supplies, etc., making the overall structure more compact and reasonable.

[0028] The upper shell 3 and the lower shell 4 are made of plastic materials, which are not only easier to process and mold, but also cheaper.

[0029] Of course, the above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A plastic acoustic device which is not easily distorted, comprising a casing (1) made of a plastic material, a speaker unit (2), characterized in that: The machine shell (1) is internally provided with an upper cavity shell (3) and a lower cavity shell (4), the bottom of the upper cavity shell (3) is extended downwards to form an outer ring wall (32) around the periphery, the top of the lower cavity shell (4) is extended upwards to form an inner ring wall (42) around the periphery, the upper cavity shell (3) is arranged on the lower cavity shell (4) and the outer ring wall (32) of the upper cavity shell (3) is sleeved outside the inner ring wall (42) of the lower cavity shell (4), the upper cavity shell (3) and the lower cavity shell (4) form a closed sound cavity (5) around, the bottom of the lower cavity shell (4) is formed with a sound outlet hole (43), and the loudspeaker unit (2) is arranged in the closed sound cavity (5) and close to the diaphragm end of the loudspeaker unit (2) is arranged at the sound outlet hole (43) position.

2. The non-distorted plastic acoustic device of claim 1, wherein: The upper cavity shell (3) is formed with a plurality of lock screw female end portions (31), and the lower cavity shell (4) is formed with a plurality of lock screw male end portions (41) corresponding in position to the number of lock screw female end portions (31).

3. The non-distorted plastic acoustic device of claim 1, wherein: The machine shell (1) comprises a machine body (11) and a machine cover (12) arranged on the machine body (11).

4. The non-distorted plastic acoustic device of claim 3, wherein: The bottom of the machine body (11) is formed with a plurality of sound outlet meshes (111).

5. The non-distorted plastic acoustic device of claim 3, wherein: The top of the machine body (11) is formed with a plurality of buckle protrusions (112), the bottom of the machine cover (12) is formed with a plurality of buckle ears (121) corresponding in position to the number of buckle protrusions (112), each buckle ear (121) is formed with a buckle groove (122) corresponding to the buckle protrusion (112), and each buckle protrusion (112) is buckled and connected with the corresponding buckle groove (122) when the machine cover (12) is arranged on the machine body (11).

6. The non-distorted plastic acoustic device of claim 3, wherein: The bottom of the machine body (11) is formed with a plurality of lower lock screw columns (113), and the bottom of the lower cavity shell (4) is formed with a plurality of upper lock screw columns (44) corresponding in position to the number of lower lock screw columns (113).

7. A non-distorted plastic acoustic device as claimed in claim 6, wherein: The bottom of the upper lock screw column (44) is formed with a slot (45), and each lower lock screw column (113) is inserted into the slot (45) of the corresponding upper lock screw column (44).

8. The non-distorted plastic acoustic device of claim 3, wherein: The inner side of the machine body (11) is formed with a reinforcing rib (114) around the periphery.

9. The non-distorted plastic acoustic device of claim 1, wherein: The top of the upper cavity shell (3) is concave downwards to form a storage groove (33).

10. The non-distorted plastic acoustic device of claim 1, wherein: The upper cavity shell (3) and the lower cavity shell (4) are respectively made of plastic material.

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