CD player with improved internal duct structure

Abstract

The utility model discloses a CD player of improved internal air pipe structure, including the casing, PCB board, play subassembly and loudspeaker, the casing includes top shell and bottom shell, top shell and bottom shell assembly fixed, be provided with loudspeaker cover in the casing inside for installing and fixing loudspeaker and form acoustic cavity through loudspeaker cover, be provided with air flue partition frame in the loudspeaker cover, and the air flue groove is separated through air flue partition frame, and the first end opening of air flue groove forms the air inlet, and the air inlet is close to loudspeaker and is communicated with the space of loudspeaker, bottom shell is pressed on loudspeaker cover and air flue partition frame and will air flue groove from bottom surface seal, be provided with air outlet in bottom shell, and air outlet is connected with air flue groove and butt joint. Such through air flue partition frame enclose the air outlet pipeline and replace the original independent air pipe, to can dispense with independent air pipe, reduce the number of parts, reduce cost, and need not use screw installation, improve the convenience and efficiency of assembly.

Description

Technical Field

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[0001] The utility model relates to the technical field of electronic products, in particular to a CD player. Background Art

[0002] CD players are popular among many users because of their convenience in carrying and good acoustic effects. Traditional CD players generally form an acoustic cavity by covering the speaker with only the main case or the bottom cover. An independent air duct is provided in the acoustic cavity for exhausting air. The independent air duct is divided into upper and lower parts, which are integrated by ultrasonic technology and then fixed in the cavity with screws. This not only has a relatively complex structure, many parts, and high costs, but also is not convenient for assembly and has low assembly efficiency. Summary of the Utility Model

[0003] Aiming at the defects of the prior art, the utility model provides a CD player with an improved internal air duct structure, which has a simpler structure, more reasonable design, fewer parts, lower costs, and more convenient assembly.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions: A CD player with an improved internal air duct structure includes a housing, a PCB board, a playing component, and a speaker. The housing includes a top case and a bottom case, which are assembled and fixed. A speaker cover is provided inside the housing for installing and fixing the speaker and forming an acoustic cavity through the speaker cover. An air duct partition frame is provided inside the speaker cover, and an air duct groove is separated by the air duct partition frame. The head end opening of the air duct groove forms an air inlet, and the air inlet is close to the speaker and communicates with the space where the speaker is located. The bottom case presses on the speaker cover and the air duct partition frame to seal the air duct groove from the bottom surface. An air outlet hole is provided in the bottom case, and the air outlet hole is docked and connected with the air duct groove.

[0005] Further, there are two left and right speakers. Speaker holes are symmetrically provided on the left and right sides of the speaker cover, and the speakers are installed in the speaker holes and extend into the acoustic cavity.

[0006] Further, the air duct partition frame is in a "U" - shaped structure, and the parts symmetrically bent outwards on both sides respectively form air inlets. The two air inlets are respectively facing the two speakers, and the air outlet hole on the bottom case is facing the tail of the air duct groove.

[0007] Further, the two sides of the speaker cover bulge, forming a concave structure in the middle, and the PCB board is embedded in the concave structure in the middle of the speaker cover. <N

[0008] Further, air duct pressing ribs are provided on the inner surface of the bottom case at positions aligned with the air duct partition frame, and the air duct groove is sealed by pressing the air duct pressing ribs on the air duct partition frame.

[0009] Furthermore, a ring of reinforcing ribs is provided on the inner surface of the bottom shell, aligned with the edge of the speaker cover. The sealing of the acoustic cavity is achieved by pressing the reinforcing ribs against the bottom of the speaker cover edge.

[0010] Furthermore, recessed mating grooves are provided at the bottom end of the horn cover frame and the bottom end of the air duct partition frame, and raised ribs are provided on the top surface of the surrounding ribs and the air duct pressure ribs. The sealing connection between the surrounding ribs and the horn cover frame and the air duct pressure ribs and the air duct partition frame is achieved by inserting the raised ribs into the mating grooves.

[0011] Furthermore, a reinforcing column is provided inside the horn cover at a position outside the air duct frame. The reinforcing column is connected to the air duct frame as a whole to form a reinforcing structure for the air duct frame.

[0012] This invention utilizes a partition frame designed within the speaker enclosure to separate the air duct channel from the space containing the speaker. A bottom shell covers the air duct channel and has an exhaust port that connects to it. This partitioned enclosure replaces the original independent duct, eliminating the need for a separate duct, reducing the number of parts, lowering costs, and eliminating the need for screws, thus improving assembly convenience and efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle;

[0015] Figure 3 This is a schematic diagram of the present invention after the top shell and playback module have been removed;

[0016] Figure 4 In order to be in Figure 3 The diagram shows the result after further removing the PCB board and a speaker.

[0017] Figure 5 This is a schematic diagram of the present invention after the bottom shell has been removed;

[0018] Figure 6 This is a schematic diagram of the bottom shell structure.

[0019] In the diagram, 1 is the top shell, 2 is the bottom shell, 21 is the surrounding rib, 22 is the air duct pressure rib, 23 is the air outlet, 24 is the protruding rib, 3 is the speaker cover, 31 is the air duct partition, 32 is the speaker hole, 33 is the air duct groove, 34 is the air inlet, 35 is the docking groove, 36 is the reinforcing column, 4 is the PCB board, 5 is the speaker, and 6 is the playback component. Detailed Implementation

[0020] In this embodiment, refer to Figures 1-6, the CD player with an improved internal air duct structure includes a housing, a PCB board 4, a playing component 6, and a speaker 5. The housing includes a top shell 1 and a bottom shell 21. The top shell and the bottom shell are assembled and fixed. Inside the housing, there is a speaker cover 3 for installing and fixing the speaker 5 and forming an acoustic cavity through the speaker cover 3. Inside the speaker cover 3, there is an air duct partition frame 31, which is partitioned into an air duct groove 33 by the air duct partition frame 31. The head end opening of the air duct groove 33 forms an air inlet 34. The air inlet 34 is close to the speaker 5 and communicates with the space where the speaker 5 is located, thus forming an air inlet structure. The bottom shell 2 presses on the speaker cover 3 and the air duct partition frame 31 to seal the air duct groove 33 from the bottom surface. An air outlet hole 23 is provided in the bottom shell 2, and the air outlet hole 23 is docked and connected with the air duct groove 33. In this way, a structure for discharging air from the speaker 5 through the air inlet 34 and the air duct groove 33 to the air outlet hole 23 is formed. <00000�3><00000�4>There are two speakers 5, namely left and right. Speaker holes 32 are symmetrically arranged on the left and right sides of the speaker cover 3. The speaker 5 is installed in the speaker holes 32 and extends into the acoustic cavity. <00000�5><00000�6>The air duct partition frame 31 has a "U" - shaped structure. The parts symmetrically bent and extending outward on both sides respectively form the air inlets 34. The two air inlets 34 are respectively facing the two speakers 5, and the air outlet hole 23 on the bottom shell 2 is facing the tail of the air duct groove 33. <00000�7><00000�8> The two sides of the speaker cover 3 bulge, making a concave structure formed in the middle. The PCB board 4 is embedded in the concave structure in the middle of the speaker cover 3, which can save the space for installing the PCB board 4.<00000�9>

[0024] On the inner surface of the bottom shell 2, at the position aligned with the air duct partition frame 31, there is an air duct pressing rib 22. By pressing the air duct pressing rib 22 on the air duct partition frame 31, the sealing of the air duct groove 33 is achieved.

[0025] On the inner surface of the bottom shell 2, at the position aligned with the border of the speaker cover 3, there is also a surrounding rib 21. By pressing the surrounding rib 21 on the bottom end of the border of the speaker cover 3, the sealing of the acoustic cavity is achieved.

[0026] On the bottom end of the border of the speaker cover 3 and on the bottom end of the air duct partition frame 31, there are both concave docking grooves 35. On the top surface of the surrounding rib 21 and the air duct pressing rib 22, there are both protruding ribs 24. By inserting the ribs 24 into the docking grooves 35, the sealing docking of the surrounding rib 21 with the border of the speaker cover 3 and the air duct pressing rib 22 with the air duct partition frame 31 is achieved.

[0027] Inside the speaker cover 3, at the position outside the air duct partition frame 31, there is a strengthening column 36. The strengthening column 36 is connected with the air duct partition frame 31 as a whole to form a strengthening structure for the air duct partition frame 31, enhancing the structural strength of the air duct partition frame 31.

[0028] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. A CD player with an improved internal duct structure, comprising a housing, a PCB board, a playback assembly, and a speaker, wherein the housing includes a top shell and a bottom shell, the top shell and the bottom shell being assembled and fixed together, and a speaker cover is provided inside the housing for mounting and fixing the speaker, and the speaker cover forms an acoustic cavity, characterized in that: There is an air duct partition frame inside the speaker cover. The air duct partition frame divides to form an air duct groove. The head end opening of the air duct groove forms an air inlet. The air inlet is close to the speaker and communicates with the space where the speaker is located. The bottom shell presses on the speaker cover and the air duct partition frame to seal the air duct groove from the bottom surface. There is an air outlet hole provided in the bottom shell. The air outlet hole is docked and connected with the air duct groove.

2. The CD player with the improved internal duct structure according to claim 1, characterized in that: There are two speakers, namely left and right. Speaker holes are symmetrically arranged on the left and right sides of the speaker cover. The speakers are installed in the speaker holes and extend into the acoustic cavity.

3. The CD player with the improved internal duct structure according to claim 2, characterized in that: The air duct partition frame is in a "ji" - shaped structure. The parts that symmetrically bend outwards on both sides respectively form air inlets. The two air inlets respectively face the two speakers. The air outlet hole on the bottom shell faces the tail of the air duct groove.

4. The CD player with the improved internal duct structure according to claim 1, characterized in that: Both sides of the speaker cover bulge, forming a sunken structure in the middle. The PCB board is embedded in the sunken structure in the middle of the speaker cover.

5. The CD player with the improved internal duct structure according to claim 1, characterized in that: Air duct pressing ribs are provided on the inner surface of the bottom shell at the position aligned with the air duct partition frame. Pressing the air duct partition frame with the air duct pressing ribs realizes the sealing of the air duct groove.

6. The CD player with the improved internal duct structure according to claim 5, characterized in that: A circle of surrounding ribs is also provided on the inner surface of the bottom shell at the position aligned with the border of the speaker cover. Pressing on the bottom end of the border of the speaker cover with the surrounding ribs realizes the sealing of the acoustic cavity.

7. The CD player with the improved internal duct structure according to claim 6, characterized in that: Concave docking grooves are provided on the bottom ends of the border of the speaker cover and the bottom ends of the air duct partition frame. Convex ribs are provided on the top surfaces of the surrounding ribs and the air duct pressing ribs. Inserting the convex ribs into the docking grooves realizes the sealed docking of the surrounding ribs with the border of the speaker cover and the air duct pressing ribs with the air duct partition frame.

8. The CD player with the improved internal duct structure according to claim 1, characterized in that: Reinforcing columns are provided inside the speaker cover at the position outside the air duct partition frame. The reinforcing columns are connected with the air duct partition frame as a whole to form a reinforcing structure for the air duct partition frame.

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