CN212486149U

CN212486149U - Drying and charging integrated structure for hearing aid

Info

Publication number: CN212486149U
Application number: CN202021041125.6U
Authority: CN
Inventors: 徐炜; 吴秋麒; 任国峰
Original assignee: Suzhou Soundlink Co ltd
Current assignee: Suzhou Soundlink Co ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-02-05
Anticipated expiration: 2030-06-09

Abstract

The utility model discloses a drying and charging integrated structure for hearing aid, belonging to the technical field of hearing aid, comprising a box body, wherein a drying chamber and a charging area are formed on the box body, a cover body is buckled on the drying chamber, the charging area is provided with a first battery position, a second battery position and a power interface, a circuit board is installed in the box body, a charging control chip, a master control singlechip and a drying circuit are connected on the circuit board, the power interface is connected with two voltage input ends of the charging control chip, and two output ends of the charging control chip are respectively connected with the first battery position and the second battery position; the master control single chip microcomputer is connected between the power interface and the drying circuit, and the drying circuit is conducted and generates heat after the power interface is electrified, so that the hearing aid placed in the drying chamber is dried. The utility model discloses have and combine drying device and battery charging device as an organic whole, a tractor serves two-purpose, uses and carries more convenient effect.

Description

Drying and charging integrated structure for hearing aid

Technical Field

The utility model relates to a audiphone technical field, in particular to drying and integrative structure that charges for audiphone.

Background

Hearing aids are important hearing aids, which have a high frequency of use and a long duration of use, and hearing aid-specific batteries require a long continuous discharge. The special battery for the hearing aid is a button battery generally in order to meet the volume requirement, and has higher requirement on the capacity of the special battery for the hearing aid in order to meet the long-time discharge requirement, so that the charging function needs to be added. After the hearing aid is used for a period of time, bacteria are easy to breed under the influence of moisture in the air and moisture in the auditory canal, the body health of a user is affected, and therefore the hearing aid needs to be dried regularly.

The following problems exist in the prior art: use dedicated drying device usually when charging to audiphone, to the special button cell of audiphone charge need design charging device in addition, the user need carry drying device and charging device respectively just can realize charging and the dry function of audiphone, is difficult for carrying, brings inconvenience for the use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a not enough to prior art exists, the utility model aims to provide a dry and integrative structure that charges for hearing aid has and combines drying device and battery charging device machine as an organic whole, and a tractor serves two-purpose uses and carries more convenient effect.

A drying and charging integrated structure for a hearing aid comprises a box body, wherein a drying chamber and a charging area are formed on the box body, a cover body is buckled on the drying chamber, a first battery position, a second battery position and a power interface are arranged in the charging area, a circuit board is installed in the box body, a charging control chip, a master control single chip microcomputer and a drying circuit are connected onto the circuit board, the power interface is connected with two voltage input ends of the charging control chip, and two output ends of the charging control chip are respectively connected with the first battery position and the second battery position;

the master control single chip microcomputer is connected between the power interface and the drying circuit, and the drying circuit is conducted and generates heat after the power interface is electrified, so that the hearing aid placed in the drying chamber is dried.

The utility model discloses further set up to: the utility model discloses a drying circuit, including main control singlechip, power supply, PTC heating piece, drying circuit, R46, R45, main control singlechip, STC15W401AS singlechip, power source links to each other with the P1.5 interface of main control singlechip, the P3.1 interface of main control singlechip links to each other with drying circuit, drying circuit includes PTC heating piece, MOS pipe VT7, R46 and R45, the PTC heating piece links to each other with power source, the grid of MOS pipe VT7 passes through a thread and links to each other with the P3.1 interface of main control singlechip, R46 one end links to each other with power source, and the other end is connected on the thread, R45 one end links to.

The utility model discloses further set up to: the drying chamber is internally connected with a germicidal lamp which is an UV-LED lamp, and the circuit board is connected with a germicidal circuit for controlling the brightness of the germicidal lamp.

The utility model discloses further set up to: be connected with the protection circuit on the circuit board, the protection circuit includes hall switch IC9, triode VT8 and MOS pipe VT9, MOS pipe VT 9's grid links to each other with the P3.2 interface of master control singlechip, MOS pipe VT 9's drain electrode links to each other with sterilization circuit, triode VT 8's base links to each other with hall switch's OUTPUT interface, triode VT 8's projecting pole ground connection, when the lid was closed, hall switch IC9 control VT8 switches on, master control singlechip control VT9 drives sterilization circuit and switches on, the bactericidal lamp is lighted.

The utility model discloses further set up to: the charging control chip is a DS2711 chip, a rechargeable battery is arranged in the box body, the rechargeable battery and a power interface are respectively connected with a CC1 interface and a CC2 interface of the charging control chip through a triode VT3 and a triode VT4, a collector of the triode VT3 is connected with a positive electrode of a first battery, and a collector of the triode VT4 is connected with a positive electrode of a second battery.

The utility model discloses further set up to: be connected with between power source interface and the rechargeable battery position and be equipped with and fill the management chip, can dismantle in the rechargeable battery position and connect nickel-hydrogen battery, power source interface charges through being equipped with the nickel-hydrogen battery that fills the management chip in to the rechargeable battery position.

The utility model discloses further set up to: the standby charging management chip is a DS2711 chip, the power interface is a type-c interface, the CC1 interface of the standby charging management chip is connected with the first interface of the power interface through a triode VT1, the collector of the triode VT1 is connected with the positive electrode of the rechargeable battery position, and the VP1 interface of the standby charging management chip is connected with the positive electrode of the rechargeable battery position.

The utility model discloses further set up to: the circuit board is connected with an LED2, and the LED2 is connected with an LED1 interface of the standby management chip.

The utility model discloses further set up to: the cover body is provided with an air vent, and one side of the length direction of the air vent is connected with a baffle.

The utility model discloses further set up to: a plurality of air holes are uniformly formed in the bottom wall of the drying chamber.

When the hearing aid is dried, a power supply is connected at a power supply interface, the cover body is buckled, an OUTPUT interface of the Hall switch IC9 is conducted and OUTPUTs low level, the triode VT8 is cut off, a P3.2 interface of the master control singlechip OUTPUTs high level to enable the MOS transistor VT9 to be conducted, the sterilizing circuit turns on the sterilizing lamp to sterilize the hearing aid; the P3.1 port of the main control singlechip outputs high level, power voltage forms a passage through R45 and R46, the MOS tube VT7 is conducted, the heating main loop forms a passage, the PTC heating sheet is electrified and heated, and the hearing aid in the drying chamber is dried. Button cells to be charged are placed in the first battery position and the second battery position, when a power supply interface is electrified or a power supply battery is arranged in the charging battery position, the button cells in the first battery position and the second battery position can be charged through the charging control chip, and meanwhile, when the electric quantity of the power supply battery in the charging battery position is insufficient, the button cells can be charged through the standby charging management chip and the power supply interface.

To sum up, the utility model discloses following beneficial effect has:

1. the drying chamber and the charging area which are arranged on the box body can meet the two functions of charging the button battery of the hearing aid and drying the hearing aid, so that the use convenience is improved;

2. the hearing aid can be dried and sterilized at the same time through the arrangement of the sterilizing lamp, the sterilizing circuit and the drying circuit;

3. through the setting of protection circuit, the state that the bactericidal lamp can be controlled to the control lid opens and shuts, effectively avoids ultraviolet pollution.

Drawings

Fig. 1 is a schematic structural diagram for embodying the whole of the present invention;

fig. 2 is a schematic structural view for showing a fastening state of the cover body in the present invention;

fig. 3 is a schematic structural diagram of the circuit board and the rechargeable battery according to the present invention;

fig. 4 is a circuit diagram of the present invention.

In the figure, 1, a box body; 11. a drying chamber; 111. a cover body; 112. a vent hole; 113. a baffle plate; 114. Air holes are formed; 12. a charging region; 121. a first battery position; 122. a second battery position; 123. a power interface; 2. a circuit board; 21. a charging control chip; 22. a master control singlechip; 3. a drying circuit; 31. a PTC heating sheet; 32. the MOS transistor VT 7; 4. a sterilization circuit; 41. a germicidal lamp; 5. a protection circuit; 51. a hall switch IC 9; 52. a transistor VT 8; 53. the MOS transistor VT 9; 6. a rechargeable battery bit; 7. a charging management chip is prepared; 71. an LED 2.

Detailed Description

The present invention will be described in detail with reference to the attached drawings, and other advantages and effects of the present invention can be easily understood by those skilled in the art from the disclosure of the present specification. In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for the sake of clarity, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also regarded as the scope of the present invention without substantial changes in the technical content.

Example (b):

as shown in fig. 1 to 3, for the utility model relates to a drying and integrative structure that charges for hearing aid, including box body 1, be formed with drying chamber 11 and charging area 12 on the box body 1, the lock has lid 111 on the drying chamber 11, and charging area 12 is provided with a battery position 121, No. two battery positions 122 and power source 123, and box body 1 in-connection has rechargeable battery position 6 and circuit board 2, can dismantle in the rechargeable battery position 6 and connect No. 5 nickel-hydrogen batteries.

As shown in fig. 4, the circuit board 2 is connected with a main control single chip 22 and a drying circuit 3, the main control single chip 22 is an STC15W401AS single chip, the power interface 123 is set to be a type-c interface with an input voltage of 5V, a first interface of the power interface 123 is connected with a P1.5 interface of the main control single chip 22, the P3.1 interface of the main control single chip 22 is connected with the drying circuit 3, the drying circuit 3 includes a PTC heater 31, a MOS transistor VT732, a R46 and a R45, the PTC heater 31 is connected with the power interface 123, a gate of the MOS transistor VT732 is connected with the P3.1 interface of the main control single chip 22 through a main line, one end of the R46 is connected with the power interface 123, the other end is connected with the main line, one end of the R45 is.

When the hearing aid needs to be dried, the hearing aid is placed in the drying chamber 11 and the cover body 111 is buckled, the power supply interface 123 is switched on and electrified, the P3.1 interface of the master control singlechip 22 outputs high level, the current passes through R46 and R45 to form a passage, the voltage drop generated on R45 is the grid voltage for switching on the MOS transistor VT732, and the MOS transistor VT732 is switched on at the moment; the current passes through the conducted MOS tube VT732 to the negative electrode of the power supply, the heating main loop forms a passage, the PTC electric heating tube is electrified to generate heat to be heated, the drying circuit 3 is connected to the circuit board 2 and is positioned right below the drying chamber 11, as shown in figures 1 and 2, the heat generated by the PTC heating tube enters the drying chamber 11 from the air vent 114 arranged on the drying chamber 11 to carry out high-temperature drying on the heat.

The master control single chip microcomputer 22 is set to heat for eight hours, after the eight hours, P3.1 is converted into low level, at the moment, no current passes through R45, no voltage drop is generated, grid voltage disappears, the MOS tube VT732 is cut off, the heating main loop is cut off, PTC power-off stops working, the drying process is finished, and at the moment, the hearing aid can obtain the best drying effect.

As shown in fig. 4, a germicidal lamp 41 is installed in the drying chamber 11, the germicidal lamp 41 is a UV275-LED light emitting tube, emits ultraviolet light with a center wavelength of 275nm, has the effect of disinfecting and sterilizing the hearing aid in a short time, and the circuit board 2 is correspondingly connected with a germicidal circuit 4 for controlling the germicidal lamp 41 to be turned on and a protection circuit 5 for controlling the germicidal circuit 4 to be turned on and off.

The protection circuit 5 comprises a Hall switch IC951, a triode VT852 and an MOS tube VT953, the grid electrode of the MOS tube VT953 is connected with a P3.2 interface of the main control single chip microcomputer 22, the drain electrode of the MOS tube VT953 is connected with the sterilization circuit 4, the base electrode of the triode VT852 is connected with an OUTPUT interface of the Hall switch, and the emitting electrode of the triode VT852 is grounded.

The sterilization circuit 4 comprises a SY7200 constant current source driving circuit and peripheral components, a pin 6 of the Y7200 constant current source driving circuit is connected with a first interface of the input power interface 123, a pin 2 is grounded, C6 is connected between the pin 6 and the pin 2, and C6 is a decoupling filter capacitor of the power input end and is used for filtering power noise so as to ensure the stable work of the driving module;

l2 is connected between the pin 6 and the pin 1/LX, the pin 1/LX is directly connected with the drain electrode of the MOS tube VT953 of the protection circuit 5, the pin 1/LX is connected with a diode VD4, and the cathode of the diode VD4 is connected with C7, R50 and the pin 5/OVP. The pin 5/OVP is an overvoltage protection end, and an overvoltage protection signal is collected by the output end of the diode VD4 and then is output to the pin 5/OVP. Pin 3 is a feedback terminal, and the UV-LED working current can be adjusted by adjusting the resistance values of R50 and R51. The pin 4 is an enable/dimming control terminal, and the brightness of the germicidal lamp 41 can be adjusted by adjusting the duty ratio of the input pulse.

A magnet is arranged in the cover body 111, when the cover body 111 is buckled with the drying chamber 11, an external magnetic field formed by the magnet in the upper cover acts on the Hall switch IC951, when the magnetic induction intensity exceeds a conducting threshold value BOP of the Hall switch IC951, an OUTPUT interface of the Hall switch IC951 is conducted and OUTPUTs a low level, the triode VT852 is cut off, at the moment, a P3.2 interface of the main control singlechip 22 OUTPUTs a high level to enable the MOS tube VT953 to be conducted, and a SY7200 constant current source driving circuit connected with the MOS tube VT953 is conducted to enable the germicidal lamp 41 to emit light;

when the cover body 111 is opened, the external magnetic field is far away from the Hall switch IC951, the magnetic induction intensity rapidly drops and is lower than the conduction threshold value BOP, the OUTPUT interface of the Hall switch IC951 is cut off, the high level is OUTPUT, VT8 is conducted, the MOS tube VT953 is cut off, the SY7200 constant current source driving circuit is disconnected, and the germicidal lamp 41 is extinguished.

As shown in fig. 4, a charging control chip 21 for charging the backup batteries in the first battery position 121 and the second battery position 122 and a backup management chip 7 for charging the nickel-hydrogen battery in the charging battery position 6 through the power interface 123 are connected to the circuit board 2, and both the charging control chip 21 and the backup management chip 7 are DS2711 chips. The positive electrode of the charging battery position 6 and the first interface of the power interface 123 are respectively connected with the CC1 interface and the CC2 interface of the charging control chip 21 through a triode VT3 and a triode VT4, the first battery position 121 is connected with the VP1 interface of the charging control chip 21 and the collector of the triode VT3, and the second battery position 122 is connected with the VP2 interface of the charging control chip 21 and the collector of the triode VT 4. The VP1 interface and the VP2 interface monitor the voltages of the first battery bit 121 and the second battery bit 122, and after the voltages are transmitted to the charging control chip 21, the CC1 interface and the CC2 interface adjust the states of the transistor VT3 and the transistor VT4, so as to adjust the charging currents of the transistor VT3 and the transistor VT4 on the first battery bit 121 and the second battery bit 122.

The DS2711 chip is an AA/AAA nickel-metal hydride battery which can safely and quickly charge one or two batteries in series/parallel connection and can also prevent an alkaline battery/lithium battery from being charged in an accidental situation. The time, temperature and voltage are continuously monitored, and a proper rapid and thorough control algorithm is provided for the nickel-metal hydride battery, so that the charging process is precisely controlled and the charging current is adjusted.

As shown in fig. 4, the CC1 interface of the standby management chip 7 is connected to the first interface of the power interface 123 through a transistor VT1, and the VP1 interface of the standby management chip 7 is connected to the positive electrode of the rechargeable battery bit 6. The circuit board 2 is connected with an LED271, and the LED271 is connected with an LED1 interface of the standby management chip 7. The first interface of the power interface 123 is connected with the emitter of the VT1, the base of the VT1 is connected with the port CC1, the collector of the VT1 is connected with the positive electrode of the rechargeable battery position 6, and the CC1 interface adjusts the working state of the VT1 in the charging process, so that the current is adjusted. When the battery in the rechargeable battery position 6 is to be charged, the LED271 blinks to indicate the charging state.

As shown in fig. 1 and 2, the lid 111 is provided with a vent hole 112, and a baffle plate 113 is connected to one side of the vent hole 112 in the longitudinal direction. The vent hole 112 keeps the drying chamber 11 ventilated during the heating process of the PTC heating tube, so as to prevent the hearing aid from being damaged due to overhigh temperature. When the germicidal lamp 41 is on, the baffle 113 can effectively shield the ultraviolet light, so as to avoid the damage of the ultraviolet light to human bodies and other objects.

The implementation principle of the above embodiment is as follows: when the hearing aid is dried, a power supply is connected at the power interface 123 to lock the cover body 111, the OUTPUT interface of the Hall switch IC951 is conducted and OUTPUTs low level, the triode VT852 is cut off, the P3.2 interface of the master control singlechip 22 OUTPUTs high level to enable the MOS transistor VT953 to be conducted, and the sterilizing circuit 4 turns on the sterilizing lamp 41 to sterilize the hearing aid; the P3.1 port of the main control single chip 22 outputs high level, the power voltage forms a passage through R45 and R46, the MOS transistor VT732 is conducted, the heating main loop forms a passage, and the PTC heating sheet 31 is electrically heated to dry the hearing aid in the drying chamber 11. Button batteries to be charged are placed in the first battery position 121 and the second battery position 122, when the power interface 123 is powered on or a power battery is arranged in the rechargeable battery position 6, the button batteries in the first battery position 121 and the second battery position 122 can be charged through the charging control chip 21, and meanwhile, when the electric quantity of the power battery in the rechargeable battery position 6 is insufficient, the button batteries can be charged through the standby charging management chip 7 and the power interface 123.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a hearing aid is with dry and integrative structure that charges which characterized in that: the drying box comprises a box body (1), wherein a drying chamber (11) and a charging area (12) are formed on the box body (1), a cover body (111) is buckled on the drying chamber (11), the charging area (12) is provided with a first battery position (121), a second battery position (122) and a power interface (123), a circuit board (2) is installed in the box body (1), a charging control chip (21), a main control single chip microcomputer (22) and a drying circuit (3) are connected onto the circuit board (2), the power interface (123) is connected with two voltage input ends of the charging control chip (21), and two output ends of the charging control chip (21) are respectively connected with the first battery position (121) and the second battery position (122);

the master control single chip microcomputer (22) is connected between the power interface (123) and the drying circuit (3), and after the power interface (123) is electrified, the drying circuit (3) is conducted and generates heat to dry the hearing aid placed in the drying chamber (11).

2. The integrated drying and charging structure for a hearing aid according to claim 1, wherein: the drying device is characterized in that the main control single chip microcomputer (22) is an STC15W401AS single chip microcomputer, the power supply interface (123) is connected with a P1.5 interface of the main control single chip microcomputer (22), a P3.1 interface of the main control single chip microcomputer (22) is connected with the drying circuit (3), the drying circuit (3) comprises a PTC heating sheet (31), an MOS tube VT7(32), R46 and R45, the PTC heating sheet (31) is connected with the power supply interface (123), a grid electrode of the MOS tube VT7(32) is connected with the P3.1 interface of the main control single chip microcomputer (22) through a main line, one end of R46 is connected with the power supply interface (123), the other end of the R46 is connected with the main line, one end of the R45 is connected with the main line.

3. The integrated drying and charging structure for a hearing aid according to claim 2, wherein: the drying chamber (11) is internally connected with a sterilizing lamp (41), the sterilizing lamp (41) is an UV-LED lamp, and a sterilizing circuit (4) for controlling the brightness of the sterilizing lamp (41) is connected onto the circuit board (2).

4. The integrated drying and charging structure for a hearing aid according to claim 3, wherein: be connected with protection circuit (5) on circuit board (2), protection circuit (5) include hall switch IC9(51), triode VT8(52) and MOS pipe VT9(53), the grid of MOS pipe VT9(53) links to each other with the P3.2 interface of master control singlechip (22), the drain electrode of MOS pipe VT9(53) links to each other with bactericidal circuit (4), the base of triode VT8(52) links to each other with hall switch's OUTPUT interface, the projecting pole ground of triode VT8(52), when lid (111) are closed, hall switch IC9(51) control VT8 switches on, master control singlechip (22) control VT9 drives bactericidal circuit (4) and switches on, bactericidal lamp (41) light.

5. The integrated drying and charging structure for a hearing aid according to claim 3, wherein: the charging control chip (21) is a DS2711 chip, a charging battery position (6) is arranged in the box body (1), the charging battery position (6) and the power interface (123) are respectively connected with a CC1 interface and a CC2 interface of the charging control chip (21) through a triode VT3 and a triode VT4, a collector of the triode VT3 is connected with the anode of the first battery position (121), and a collector of the triode VT4 is connected with the anode of the second battery position (122).

6. The integrated drying and charging structure for a hearing aid according to claim 1, wherein: be connected with between power source (123) and rechargeable battery position (6) and fill management chip (7) fully, can dismantle in rechargeable battery position (6) and connect nickel-hydrogen battery, power source (123) are through filling management chip (7) fully and charge the nickel-hydrogen battery in rechargeable battery position (6).

7. The integrated drying and charging structure for a hearing aid according to claim 6, wherein: the standby charging management chip (7) is a DS2711 chip, the power interface (123) is a type-c interface, a CC1 interface of the standby charging management chip (7) is connected with a first interface of the power interface (123) through a triode VT1, a collector of the triode VT1 is connected with the anode of the rechargeable battery position (6), and a VP1 interface of the standby charging management chip (7) is connected with the anode of the rechargeable battery position (6).

8. The integrated drying and charging structure for a hearing aid according to claim 7, wherein: the circuit board (2) is connected with an LED2(71), and the LED2(71) is connected with an LED1 interface of the standby management chip (7).

9. The integrated drying and charging structure for a hearing aid according to claim 6, wherein: the cover body (111) is provided with a vent hole (112), and one side of the vent hole (112) in the length direction is connected with a baffle plate (113).

10. The integrated drying and charging structure for a hearing aid according to claim 2, wherein: a plurality of air holes (114) are uniformly arranged on the bottom wall of the drying chamber (11).