A portable Bluetooth speaker

Abstract

A portable Bluetooth speaker includes a cylindrical frame, a tweeter, and a woofer. The cylindrical frame forms a cavity containing a battery and a control board. The surface of the cylindrical frame has a first mounting groove and a second mounting groove communicating with the cavity. The tweeter is located in the first mounting groove, and the woofer is located in the second mounting groove. The tweeter and woofer are located on the same side and facing the same direction. A cylindrical frame is fitted with a mesh cover. Support feet are located at both ends of the cylindrical frame. Each support foot includes a rubber ring and a passive disc located within the rubber ring for sealing the cylindrical frame. A foot pad is located on the bottom side of the mesh cover. The tweeter and woofer emit sound from the same direction, the cavity is completely sealed, and bass frequencies are transmitted without loss.

Description

Technical Field

[0001] This utility model relates to the field of audio technology, and in particular to a portable Bluetooth speaker. Background Technology

[0002] Existing portable speakers often employ a downward-facing woofer design. For example, a speaker with a built-in power supply, as disclosed in Chinese Patent Publication No. CN201039425Y, has a cabinet containing a tweeter, woofer, and power amplifier. A battery pack is also housed within the cabinet. The positive terminal of the battery pack is connected to the positive potential pin of the power amplifier via a wire, and the negative terminal is connected to the ground potential pin of the power amplifier via a wire. A power strip includes a manual switch and a charger socket. The two ends of the manual switch are connected to the positive potential pin and control pin of the power amplifier, respectively, via wires. The two ends of the charger socket are connected to the positive and negative terminals of the battery pack, respectively. This type of portable speaker can only stand vertically, relying on tabletop reflection to enhance low frequencies. However, this design has significant drawbacks:

[0003] 1. Sound path blockage: The woofer is placed close to the support surface, and the sound waves are directly blocked by the table, resulting in serious loss of low-frequency energy;

[0004] 2. Disordered sound field: Reflected sound and direct sound interfere with each other in phase, producing a muddy sound effect;

[0005] 3. Limited application scenarios: When used on non-hard surfaces (such as carpets or sand), the low-frequency reflection efficiency drops sharply. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to provide a portable Bluetooth speaker that emits sound from the front side, has a completely sealed cavity, and transmits bass without loss.

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is: a portable Bluetooth speaker, including a cylindrical frame, a tweeter and a woofer, wherein a cavity is formed inside the cylindrical frame, and a battery and a control board are disposed inside the cavity. The surface of the cylindrical frame is provided with a first mounting groove and a second mounting groove communicating with the cavity. The tweeter is disposed in the first mounting groove, and the woofer is disposed in the second mounting groove. The tweeter and the woofer are disposed on the same side and facing the same direction. A cylindrical frame is fitted with a cylindrical mesh cover. Support feet are provided at both ends of the cylindrical frame. The support feet include rubber rings and passive discs disposed inside the rubber rings for sealing the cylindrical frame. Foot pads are provided on the bottom side of the cylindrical mesh cover. The principle of this invention is as follows: The tweeter and woofer are installed side by side on the same side of the cylindrical frame, both facing forward, so that the sound waves radiate directly forward, avoiding path obstruction caused by downward sound emission. The high and low frequencies are in phase, improving the consistency of the sound field. The two ends of the cylindrical frame are sealed by the passive plate of the support feet to form a complete acoustic cavity. The passive plate acts as a low-frequency resonant unit, replacing the reflection enhancement of the traditional down-firing design. The cavity airtightness improves bass efficiency and eliminates acoustic short circuits. The two ends and bottom of the cylindrical frame are equipped with foot pads, allowing the speaker to stand in multiple positions and be used in more scenarios.

[0008] As an improvement, the top side of the cylindrical frame is provided with an operating platform that is connected to the control panel.

[0009] As an improvement, the control board is installed vertically, the battery is located at the rear of the control board, and the tweeter and woofer are located at the front of the control board.

[0010] As an improvement, light strips are provided at the top and both ends of the vehicle body frame.

[0011] The beneficial effects of this utility model compared with the prior art are:

[0012] The tweeter and woofer are mounted side-by-side on the same side of the speaker enclosure, both facing forward. The sound waves radiate directly forward, avoiding path obstruction caused by downward sound emission. The high and low frequencies are in phase, improving the consistency of the sound field. The two ends of the speaker enclosure are sealed by passive radiators with support feet, forming a complete acoustic cavity. The passive radiators act as low-frequency resonant units, replacing the reflection enhancement of traditional down-firing designs. The cavity sealing improves bass efficiency and eliminates acoustic short circuits. The speaker enclosure has feet at both ends and the bottom, allowing the speaker to stand in multiple positions and be used in more scenarios. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the present invention.

[0014] Figure 2 This is an exploded view of the present invention. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] like Figure 1 , 2 As shown, a portable Bluetooth speaker includes a cylindrical frame 4, a cylindrical mesh cover 3 fitted over the cylindrical frame 4, a tweeter 6, and a woofer 5. The cylindrical frame 4 is generally cylindrical, forming an internal cavity. The surface of the cylindrical frame 4 has a first mounting groove and a second mounting groove communicating with the internal cavity. The tweeter 6 is located in the first mounting groove, and the woofer 5 is located in the second mounting groove. The tweeter 6 and woofer 5 are located on the same side and facing the same direction. The tweeter 6 and woofer 5 are mounted side-by-side on the same side of the cylindrical frame 4, both emitting sound forward, allowing sound waves to radiate directly forward, avoiding path obstruction caused by downward sound emission. The high / low frequencies are in phase, improving sound field consistency. A battery 7 and a control board 9 are housed within the internal cavity. The control board 9 is vertically positioned, with the battery located behind it. The tweeter 6 and woofer 5 are located in front of the control board 9. The internal space is compact, resulting in high utilization. The top side of the cylindrical frame 4 is provided with an operating platform 3 connected to the control panel 9, and a light strip 8 is provided below the operating platform 3. The two ends of the cylindrical frame 4 form a tapered opening, and light strips are provided at both ends of the cylindrical frame 4. The cylindrical frame 4 is fitted with a cylindrical mesh cover 3, and the bottom side of the cylindrical mesh cover 3 is provided with foot pads 10, allowing the speaker to be placed horizontally. The top side of the cylindrical mesh cover 3 is provided with a notch groove that exposes the operating platform 3. The two ends of the cylindrical frame 4 are provided with support feet 2, allowing the speaker to be placed upright or upside down. The support feet 2 include a silicone ring 22 and a passive plate 21 disposed inside the silicone ring 22 for sealing the cylindrical frame 4. The two ends of the cylindrical frame 4 are sealed by the passive plate of the support feet to form a complete acoustic cavity. The passive plate acts as a low-frequency resonant unit, replacing the reflection enhancement of the traditional down-firing design. The cavity sealing improves bass efficiency and eliminates acoustic short circuits.

Claims

1. A portable Bluetooth speaker, comprising a cylindrical frame, a tweeter, and a woofer, wherein a cavity is formed within the cylindrical frame, and a battery and a control board are disposed within the cavity, characterized in that: The cylindrical frame has a first mounting groove and a second mounting groove communicating with the accommodating cavity. The tweeter is installed in the first mounting groove, and the woofer is installed in the second mounting groove. The tweeter and woofer are located on the same side and face the same direction. The cylindrical frame is fitted with a cylindrical mesh cover. The two ends of the cylindrical frame are provided with support feet. The support feet include rubber rings and passive discs installed inside the rubber rings for sealing the cylindrical frame. The bottom side of the cylindrical mesh cover is provided with foot pads.

2. A portable Bluetooth speaker according to claim 1, characterized in that: The top side of the cylindrical frame is provided with an operating platform that is connected to the control panel.

3. A portable Bluetooth speaker according to claim 1, characterized in that: The control board is installed vertically, the battery is located at the rear of the control board, and the tweeter and woofer are located at the front of the control board.

4. A portable Bluetooth speaker according to claim 1, characterized in that: The top and both ends of the vehicle body frame are equipped with light strips.

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