CN2133110Y

CN2133110Y - Interruption protect temp. control switch for heating blanket

Info

Publication number: CN2133110Y
Application number: CN 92227860
Authority: CN
Inventors: 李殿本; 姜树臣
Original assignee: DALIAN HEATING BLANKET FACTORY
Current assignee: DALIAN HEATING BLANKET FACTORY
Priority date: 1992-07-14
Filing date: 1992-07-14
Publication date: 1993-05-12
Anticipated expiration: 2002-07-14

Abstract

The utility model relates to an interruption protect temperature control switch for heating blanket. The utility model is characterized in that a relay is additionally arranged in a circuit, and in order to ensure the reliable and stable operation of the relay, a rectifying diode, a voltage stabilizing diode and a button type switch are additionally arranged in the circuit. The utility model can overcome the defects that the arc electrical spark is generated because the heating wires of heating blankets are broken, and fires are caused. The interruption protect temperature control switch for heating blanket can make people feel convenient and safe when people use the heating blankets.

Description

Interruption protect temp. control switch for heating blanket

The utility model relates to a kind of electric blanket power-off protection temperature detect switch (TDS).

Electric blanket enters huge numbers of families already at cold winter, the pass of its power supply, the disconnected regulation and control height that reaches, the low temperature system is by the switch control of band slide type, it is by being connected to resistance on the shell body interior circuit board of packing into, rectifier diode, light-emitting diode and slide plate push-and-pull switch plate are formed, but when people use electric blanket, owing to heating wire quality or improper use and other reason, it is disconnected just to be easy to cause heating wire to decrease, people in use, especially night in bed, often be difficult to find, will continue under the energising situation, the arc electric spark takes place in disconnected place in the damage of heating wire, gently then burn bed clothes, heavy then cause fire, cause heavy losses for people's lives and properties, according to incompletely statistics, the whole nation is owing to the economic loss that this reason caused not to be descended several hundred million yuan every year, in recent years, people once managed the fabric that contains electric blanket is carried out flame retardant chemical treatment, also once obtained certain effect, but can not burn at the fabric that decreases disconnected place because of this arc electric spark eventually, but have burning things which may cause a fire disaster after all, this arc electric spark can be worn fabric and burning and bed clothes and cause adverse consequences thoroughly.Give people in use, cause the sensation that is absolutely unsafe.

Based on the defective and the deficiency that exist in above-mentioned; the utility model is intended to change button into from existing slide plate push-and-pull switch plate and turns round the formula switch; on circuit, set up simultaneously relay; in case and reach in use; heating wire decreases disconnected; can cut off the electricity supply, guarantee electric blanket purpose safe in utilization, and a kind of electric blanket power-off protection temperature detect switch (TDS) is provided.

Feature of the present utility model is by band low temperature button 12, high temperature button 13, opening holds concurrently starts button 14, turn-off the shell body 1 of button 15, the relay 7 that is series at circuit loop is housed on the circuit board 16 that can freely put in housing 1, the voltage stabilizing didoe 9 that is connected with relay 7, rectifier diode 10,11, capacitor 8, resistance 3 also is housed on circuit board 16, rectifier diode 6, light-emitting diode 4,5 and other auxiliary form, shell body 1 is made of drain pan and cover plate, circuit board 16 can freely be packed in it, is furnished with the button 15 of shutoff in its arbitrary side, opening holds concurrently starts button 14, low temperature button 12, high temperature button 13, when power line penetrates and can link to each other with single-pole switch 2 with double-pole switch from power line 17, and realize by turn-offing button 15, opening holds concurrently starts button 14, high, low button 13,12 function, turn-off button 15 and be the switch of breaking circuit of travelling, when the needs electric blanket was worked, can push button 15 got final product.Opening holds concurrently starts button 14, can connection circuit and start trigger relay 7, because relay 7 needs a trigger current, and rely on triggering sheet 19 to realize, to guarantee the work of relay, certain electric current also passes to electric blanket by relay 7 and heats, high, low temperature button 13, the 12nd, travel and realize that electric blanket needs height, the switch of low temperature functional, the relay 7 that series connection inserts on circuit, in order to improve power factor (PF), reduce the electric blanket power consumption, should send relay with 3V, and in its circuit, insert rectifier diode 10,11 and capacitor 8 and voltage stabilizing didoe 9, rectifier diode 10 is in order to divide the positive half cycle of getting alternating current to offer relay, and access capacitor 8 makes process filtering and eliminates other clutter, relay can be worked reliably, rectifier diode 11 is to make the negative half period of alternating current send electric blanket to heat, and be connected to voltage stabilizing didoe 9 on the circuit be avoid when power supply turn-offing or open the temporary impact electric current of generation and the high pressure that produces and since in the power supply network voltage fluctuation make the effect of playing burning voltage, and the reliably working of assurance relay, the electric wire of electric blanket inserts in the switching circuits by control 18.

Embodiment of the present utility model is described as follows in conjunction with Fig. 1, Fig. 2:

Fig. 1 be electric blanket power-off protection temperature detect switch (TDS) parts by the dress schematic diagram.

Fig. 2 is the circuit diagram of electric blanket power-off protection temperature detect switch (TDS).

From Fig. 1, Fig. 2 as can be known, opening holds concurrently starts button 14 when pressing, circuit is just open-minded, by triggering sheet 19 starting relays, make it to connect, and make the electric blanket operate as normal simultaneously, in case a certain heating wire breakdown for some reason in electric blanket, circuit in the relay turn-offs immediately and can not switch on, and at this moment, electric current can not pass through, just can not cause breakdown place at heating wire to have the arc electric spark to take place and stopped to cause the burning things which may cause a fire disaster of fire, therefore, as safe as a house, that is to say, when in a single day breakdown takes place heating wire, because the intervention of relay just can not have electric current on the circuit, and turn-off immediately.

The utility model compared with prior art has incomparable advantage in the electric blanket safety in utilization, uses electric blanket to bring very safe sensation to people simultaneously.

Claims

1; a kind of electric blanket power-off protection temperature detect switch (TDS); by on the circuit board in the shell body of packing into by resistance is arranged; rectifier diode; light-emitting diode and slide plate push-and-pull switch plate are formed; feature of the present utility model is by low temperature button 12; high temperature button 13; opening holds concurrently starts button 14; turn-off the shell body 1 of button 15; the relay 7 that is series at circuit loop is housed on the circuit board 16 that can freely put in housing 1; with the voltage stabilizing didoe 9 that relay joins, rectifier diode 10; 11; capacitor 8; resistance 3 also is housed on circuit board 16; rectifying tube 6; light-emitting diode 4; 5 and other assisted group become.

2, a kind of electric blanket power-off protection temperature detect switch (TDS) according to claim 1 is characterized in that the arbitrary side on the drain pan of shell 1 is furnished with the button 15 of shutoff, and opening holds concurrently starts button 14, low temperature button 12, high temperature button 13.