CN204242575U - A low-voltage direct-current metronome - Google Patents

Abstract

The utility model discloses a kind of low-pressure direct streaming metronome, comprise: housing, hummer module, step-up discharge module, battery module, charging inlet module, described housing four side has hummer vocal hole, case top is furnished with portable hand handle, enclosure interior is equipped with hummer module, step-up discharge module, battery module, charging inlet module, hummer module, step-up discharge module, battery module, charging inlet module are connected successively, back side of shell has power switch, and charging inlet is at back side of shell.After switching on power, battery module is by step-up discharge module to hummer module for power supply, and hummer sends strike metronome, sends strike metronome from the vocal hole of low-pressure direct streaming metronome housing four side, when power switch is closed, use back side of shell charging inlet module to charging battery module.The utility model advantage is low-pressure direct streaming metronome, with charging modes to charging battery module energy storage, by step-up discharge module to hummer module for power supply, hummer module sends strike metronome, low-pressure direct streaming metronome volume is little, lightweight, space hold is little, possesses environmental protection portable safety and the feature used of repeatedly charging.

Description

A low-voltage direct-current metronome

technical field

The utility model relates to a low-voltage direct current type metronome, which belongs to the technical field of vocal music and musical instrument practice equipment.

Background technique

A metronome for ordinary vocal music and musical instrument practice uses a mechanical spring as the power source of the pendulum. Practitioners need to twist the spring at intervals to keep the pendulum striking. The duration of pendulum striking is limited, and the mechanical pendulum-type metronome is relatively bulky. It is inconvenient to carry and takes up a lot of space. The low-voltage DC metronome is charged with a USB universal interface, which is environmentally friendly and energy-saving. It is convenient for practitioners to carry and use.

Contents of the invention

The purpose of the utility model is to provide a low-voltage direct current type metronome, which achieves the effect of making beat sound and can keep working for a long time.

The purpose of this utility model is to realize through the following technical solutions:

As a technical solution, a low-voltage direct-current metronome includes: a housing, a buzzer module, a boost discharge module, a battery module, and a charging interface module. There are buzzer sound holes on four sides of the housing, The top of the shell is equipped with a portable handle, and the inside of the shell is equipped with a buzzer module, a boost discharge module, a battery module, and a charging interface module, and the buzzer module, boost discharge module, battery module, and charging interface module are connected in sequence. There is a power switch on the back of the case, and the charging interface is on the back of the case. After the power is turned on, the battery module supplies power to the buzzer module through the boost discharge module, and the buzzer emits a beating sound. The beeping sound is emitted from the sound holes on the four sides of the low-voltage DC metronome housing. When the power switch is turned off, Use the charging interface module on the back of the case to charge the battery module.

As a technical solution, the buzzer module uses a 5V active buzzer.

As a technical solution, the battery module uses lithium-ion batteries.

As a technical solution, the boost discharge module uses the HT7050 boost chip.

As a technical solution, the charging interface module uses a USB universal interface.

Description of drawings

Below according to accompanying drawing, the utility model is described in further detail.

Fig. 1 is the structural representation of a kind of low voltage DC type metronome described in the utility model embodiment;

Fig. 2 is the schematic diagram of the circuit structure of a kind of low-voltage DC type metronome described in the utility model embodiment;

Description of symbols in attached drawings 1 and 2: 1. Shell, 2. Portable handle, 3. Sound hole, 4. Power switch, 5. Charging interface module, 6. Buzzer module, 7. Boost discharge module, 8. Battery module.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is specifically introduced as follows:

As a preference, a low-voltage DC-type metronome includes: a housing 1, a portable handle 2, a sound hole 3, a power switch 4, a charging interface module 5, a buzzer module 6, a boost discharge module 7, and a battery module 8. The housing 1 is made of black plastic as a whole, the portable handle 2 is installed on the top of the housing 1, the four sides of the housing are sound holes 3, the power switch 4 is on the back of the housing 1, and the charging interface module 5 is on the housing 1, the charging port can be seen on the back of the casing, the charging interface module 5, the buzzer module 6, the boost discharge module 7, and the battery module 8 are electrically connected in sequence inside the casing, the charging interface module 5 is electrically connected to the power switch 4, and the power supply The switch 4 is electrically connected to the battery module 8 .

As an implementation, the above-mentioned buzzer module uses a 5V active buzzer.

As an embodiment, the above-mentioned battery module uses a lithium-ion battery.

As an implementation, the above boost discharge module uses the HT7050 boost chip.

As an implementation, the above-mentioned charging interface module uses a USB universal interface.

When the portable electronic metronome is working, the power switch 4 needs to be turned on, the battery module 8 is connected to the boost discharge module 7 through the power switch 4, and the HT7050 boost chip used in the boost discharge module 7 outputs 5 volts to the buzzer module 6 , the 5V active buzzer on the buzzer module 6 makes a beating sound. When the power switch 4 is turned off, the charging interface module 5 is connected to the battery module 8, and the charging interface module 5 uses a USB universal interface to send low-voltage direct current to the battery module 8, and charges and stores the lithium-ion battery of the battery module 8.

Claims (5)

1. a low-pressure direct streaming metronome, it is characterized in that, comprise: housing, hummer module, step-up discharge module, battery module, charging inlet module, described housing four side has hummer vocal hole, case top is furnished with portable hand handle, enclosure interior is equipped with hummer module, step-up discharge module, battery module, charging inlet module, hummer module, step-up discharge module, battery module, charging inlet module is connected successively, back side of shell has power switch, charging inlet is at back side of shell, after switching on power, battery module passes through step-up discharge module to hummer module for power supply, hummer sends strike metronome, strike metronome is sent from the vocal hole of low-pressure direct streaming metronome housing four side, when power switch is closed, use back side of shell charging inlet module to charging battery module.

2. according to a kind of low-pressure direct streaming metronome described in claim 1, it is characterized in that, above-mentioned hummer module uses 5V active buzzer.

3. according to a kind of low-pressure direct streaming metronome described in claim 1, it is characterized in that, above-mentioned battery module uses lithium ion battery.

4. a kind of low-pressure direct streaming metronome according to claim 1, is characterized in that, above-mentioned step-up discharge module uses HT7050 boost chip.

5. a kind of low-pressure direct streaming metronome according to claim 1, is characterized in that, above-mentioned charging inlet module uses USB general-purpose interface.