CN2735266Y

CN2735266Y - Drier for hearing aid

Info

Publication number: CN2735266Y
Application number: CN 200420091323
Authority: CN
Inventors: 李建华
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-09-11
Filing date: 2004-09-11
Publication date: 2005-10-19
Anticipated expiration: 2014-09-11

Abstract

The utility model discloses a drier for hearing aids, aiming to provide a dryer that has simple structure, use safety and reliability, and low cost and can be used to dry hearing aids. The utility model comprises a casing with a cavity, a cover that covers the upper mouth part of the casing, a plug that provides the power supply, and a wire that is connected with the plug. The cavity of the casing is provided with a backing strip, a heat conducting plate is arranged between the cavity and the backing strip, the heat conducting plate is fixed with a PTC thermistor heating sheet closely contacting the heat conducting plate, and the wire and the plug are connected with the power supply binding post of the PTC thermistor heating sheet. When the power supply is switched on the hearing aids can be dried through the heating of the PTC thermistor heating sheet.

Description

The drier of audiphone

Technical field

The utility model relates to a kind of drier.

Background technology

Audiphone is a kind of electronic equipments, often keeps dry in order to make its function normal need.The general drier that adopts comes the moisture absorption, but rate of drying is slow, and transposing or bake drying agent are also pretty troublesome.The way that adopts the infrared film electric heating cloth of polymerization heat drying is also arranged at present, make the audiphone drier, but its control circuit complexity, poor reliability, the cost height, the user is difficult to be accepted.

Summary of the invention

The utility model has overcome shortcoming of the prior art, and a kind of drier of audiphone is provided.

In order to address the above problem, the drier technical scheme of audiphone: include inner chamber housing, cover lid, the plug and the lead that links to each other with plug of power supply be provided at the housing upper oral part, the inner chamber of housing is provided with liner, between inner chamber and liner, be equipped with heat-conducting plate, be fixed with the PTC thermistor heating sheet of tight contact on the heat-conducting plate, lead links to each other with the power supply wiring of plug with PTC thermistor heating sheet.

The drier of the audiphone of making according to such scheme has advantage simple in structure, safe and reliable, with low cost.

Description of drawings

Fig. 1 is the drier profile front view of audiphone;

Fig. 2 is the drier profile vertical view of audiphone;

Fig. 3 is the cutaway view of the drier lid of audiphone when opening;

Fig. 4 is heat-conducting plate and PTC thermistor heating sheet connection diagram;

Fig. 5 be circuit board and light emitting diode and with the connection diagram of power lead.

Wherein: 1, housing; 2, lid; 3, venthole; 4, be hinged; 5; Articulated axle; 6, elastic lock; 7, long column; 8, heat-conducting plate; 9, PTC thermistor heating sheet; 10, wiring; 11, circuit board; 12, lack column; 13, plug; 14, lead; 15, the hole on the housing 1; 16, dropping resistor; 17, light emitting diode; 18, liner.

The specific embodiment

The utility model will be further described below in conjunction with accompanying drawing.

The drier of audiphone includes the housing 1 of inner chamber, is provided with associated lid 2 at housing 1 upper oral part, and housing 1 and lid 2 are all made of plastic.Have the venthole 3 that penetrates on the lid 2, the water of inner chamber steams by venthole 3 discharges.Be shaped on the hinge 4 that matches respectively on lid 2 and the

housing

1,4 both connected by being hinged, and can open lid 2 around articulated axle 5 rotations.On lid 2 and housing 1, be shaped on elastic lock 5, the position when covering fixedly to close.The intracavity bottom of housing 1 is provided with several long columns 7, be fixed with heat-conducting plate 8 on it, the lower surface of heat-conducting plate 8 is fixed with the PTC thermistor heating sheet 9 of tight contact, PTC thermistor heating sheet 9 has the performance of constant temperature, A.T.C, selected parameter: AC power, rated voltage are 220V; 40 ℃ of control temperature, or 55 ℃ etc.The wiring 10 of PTC thermistor heating sheet 9 links to each other with circuit board 11, circuit board 11 is fixed on the short column 12 of housing 1 bottom, be connected to the lead 14 of band plug 13 on the circuit board 11, and by the hole on the housing 1 15 lead 14 and plug 13 are extended outside the housing 1, plug 13 can join with the AC power of 220V.In addition, also be connected to dropping resistor 16 and light emitting diode 17 on the circuit board 11, light emitting diode 17 is embedded on the housing 1, when the drier of audiphone is connected power supply, can be shinny to light emitting diode 17 at the external inspection of housing 1, the drier of indication audiphone is worked.Be provided with liner 18 at the upper surface of heat-conducting plate 8 and the inwall of housing 1.Need dry audiphone just to place in the cavity between housing 1 and the lid 2, after connecting power supply, relying on the next dry audiphone of heating of PTC thermistor heating sheet 9.

Claims

1, a kind of audiphone drier, include inner chamber housing, cover lid, the plug and the lead that links to each other with plug of power supply be provided at the housing upper oral part, the inner chamber of housing is provided with liner, it is characterized in that being equipped with heat-conducting plate between inner chamber and the liner, be fixed with the PTC thermistor heating sheet of tight contact on the heat-conducting plate, lead links to each other with the power supply wiring of plug with PTC thermistor heating sheet.

2, audiphone drier according to claim 1 is characterized in that being connected to circuit board between PTC thermistor heating sheet and the lead, is connected to light emitting diode on the circuit board.

3, audiphone drier according to claim 1 is characterized in that the employed power supply of PTC thermistor heating sheet is an AC power, rated voltage 220V.

4, audiphone drier according to claim 1 is characterized in that PTC thermistor heating sheet is temperature automatically controlled resistance heating sheet, and its heating temp scope is between 30 ℃～70 ℃.