CN2561322Y

CN2561322Y - Anti-electric shock protective mechainsm of separated electric heaters

Info

Publication number: CN2561322Y
Application number: CN 02237728
Authority: CN
Inventors: 黄维木
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-28
Filing date: 2002-06-28
Publication date: 2003-07-23
Anticipated expiration: 2012-06-28

Abstract

The utility model relates to an anti-electric shock protective mechanism of the split-typed electric heater. The utility model comprises a contact electrode and an electrode contact terminal. The contact electrode is arranged at the bottom end of the upper body of the electric heater. The electrode contact terminal corresponding to the contact electrode is provided on the foundation support. The contact electrode at the bottom surface of the upper body is connected with the electrical heating element in the inner part of the upper body. A power switch compression bar which extends out of the bottom surface is provided at the bottom part of the upper body. A convex protective sleeve is provided on the foundation support which is corresponded to the compression bar. A trigger button is arranged in an axle center hole of the protective sleeve. The outer end of the trigger button concaves into the upper end of the protective sleeve. The lower end of the trigger button goes into the foundation support. An A-shaped tabletting is connected at the lower end of the trigger button. The two ends of the trigger button are provided on the trigger keys of the symmetrically arranged microswitch. The utility model adopts the convex protective sleeve, the trigger button which concaves into the protective sleeve, and the power switch compression bar which extends downward. The microswitch turning on the power source which is caused through accidentally pressing the trigger button is effectively prevented. The occurrence of electric shock accident is avoided. The symmetrically arranged microswitch and tabletting ensure the balance of the trigger action. The losing of anti-electric shock function caused through block is avoided. Meanwhile, the exchanging of a single microswitch is facilitated and the cost is reduced.

Description

The electrocution-proof protection mechanism of split type electric heater

Technical field

The utility model relates to electric heater, and particularly a kind of electrocution-proof protection mechanism of split type electric heater is mainly used on electric kettle and the similar household electrical appliance.

Background technology

There is heating (kettle body) inside, the end to existing this class electric heater (as electric kettle) in the upper body, its power supply by the bottom surface, upper body and above the pedestal corresponding electrode contacts be connected in the pedestal, control circuit is arranged in pedestal.Power line penetrates pedestal, and the break-make by two microswitches in the pedestal and control circuit control heating.Have the microswitch that exposes to trigger depression bar at base-plates surface, when the upper body is placed on the pedestal, will trigger depression bar and depress the triggering microswitch connecting power, and the electrode contacts by base-plates surface is connected on the heating in the upper body.Outside people's will or when pressing exposed switch triggering depression bar curiously, will make the electrode contact of base-plates surface charged, electric shock accidents very easily takes place, very dangerous.

The purpose of this utility model just provides the electrocution-proof protection mechanism of the good split type electric heater of a kind of security performance.

The technical solution of the utility model is: comprise the electrode contact above the contact electrode of bottom, electric heater upper body and the corresponding with it pedestal; the contact electrode of bottom surface, upper body is connected with the heating of inside, upper body; it is characterized in that: the power switch depression bar that stretches out the bottom surface is arranged in bottom, described upper body; to a protective sleeve that protrudes should be arranged above the pedestal of depression bar; in the axle center hole of this protective sleeve, trigger button is arranged; recessed protective sleeve upper end, its outer end; the lower end of this trigger button penetrates in the pedestal, connects one in its lower end

Shape compressing tablet, its two ends are positioned on the triggering key of two symmetrical microswitches of placing.

Described trigger button comprises cylindricality key head, key lever, return spring, and key head lower end and key lever coaxial connection of upper end, return spring is placed on this key lever, the key lever lower end penetrate in the described pedestal and with Connect in the middle of the shape compressing tablet.

The projection of described protective sleeve is a circular arc.

The protective sleeve that the utility model adopt to protrude and recessed trigger button in it, and the supporting power switch depression bar that stretches out downwards that is provided with can effectively prevent the accidental depression trigger button and make microswitch by energize, have avoided the electric shock accidents generation.The microswitch of symmetric arrangement and compressing tablet make its trigger action balance, can not block and lose electroshock-proof function, also are convenient for changing single microswitch simultaneously, reduce cost.

Description of drawings

Fig. 1 is a structure chart of the present utility model.

The specific embodiment

Referring to Fig. 1, the utility model is separately positioned on the bottom surface and corresponding with it pedestal 2 of upper body 1 of heater.Heating 3 (electrothermal tube) is arranged in the bottom of upper body 1; there is annular contact electrode 4 corresponding in the bottom surface with the electrode contact 5 above the pedestal; the power switch depression bar 6 that stretches out the bottom surface is arranged at 1 bottom in the upper body; to a protective sleeve 7 that protrudes should be arranged above the pedestal 2 of depression bar 6; in this protective sleeve 7, trigger button 8 is arranged; the upper end of the recessed protective sleeve 7 in its outer end, the lower end of this trigger button 8 penetrate in the pedestal 2, connect one in its lower end Shape compressing tablet 9, its two ends are positioned on the triggering key of two symmetrical microswitches of placing 10.

Described trigger button 8 comprises copper post key head 81, key lever 82, return spring 83, and the lower end of key head 81 is connected with the upper end of key lever 82 is coaxial, and return spring 83 is placed on this key lever 82, key lever 82 lower ends penetrate in the described pedestal 2 and with

Connect in the middle of the shape pressing plate 9.

Protective sleeve 7 of the present utility model exceeds about the top 2mm of pedestal 2 and is designed to circular-arcly, and diameter of bore is about 5.3mm, collection protection, waterproof, attractive in appearance be one.About 2.5mm in the recessed protective sleeves 7 of trigger button 8 can effectively prevent accidental depression copper post key head 81 and make microswitch 10 connection power supplys.Respectively two microswitch 10 symmetries are installed in the both sides of trigger button 8, by "

" shape microswitch compressing tablet 9 action of transmitting trigger buttons 8 is switched on or switched off power supply.The relative equilibrium of action lost the electrocution-proof protection function to prevent to be stuck when microswitch 10 symmetrical installations can be guaranteed

trigger button

8 and 9 work of microswitch compressing tablet.Repair and replacement when also convenient simultaneously single microswitch damages reduce maintenance cost.

Power switch depression bar 6 is the unique accessories that can promote trigger button 8 in kettle body (upper body) 1 bottom, has only when kettle body 1 internal memory certain water yield kettle body 1 and pedestal 2 are used.Under the gravity effect of power switch depression bar 6, depress trigger button 8 and drive microswitch compressing tablet 9.Opening microswitch 10 gives electrode contact 5 energisings.Power supply is added to through contact electrode 4 and opens the normal work to boil water that makes on the electrothermal tube 3.When kettle body 1 separated with pedestal 2, trigger button 8 resetted, microswitch 10 outages.Because trigger button 8 is difficult for being triggered under the protection of protective sleeve 7, has improved security performance greatly.

Claims

1, a kind of electrocution-proof protection mechanism of split type electric heater; comprise the electrode contact above the contact electrode of bottom, electric heater upper body and the corresponding with it pedestal; the contact electrode of bottom surface, upper body is connected with the heating of inside, upper body; it is characterized in that: the power switch depression bar that stretches out the bottom surface is arranged in bottom, described upper body; to a protective sleeve that protrudes should be arranged above the pedestal of depression bar; in the axle center hole of this protective sleeve, trigger button is arranged; recessed protective sleeve upper end, its outer end; the lower end of this trigger button penetrates in the pedestal, connects one in its lower end Shape compressing tablet, its two ends are positioned on the triggering key of two symmetrical microswitches of placing.

2, the electrocution-proof protection mechanism of split type electric heater according to claim 1; it is characterized in that: described trigger button comprises cylindricality key head, key lever, return spring; key head lower end and key lever coaxial connection of upper end; return spring is placed on this key lever, the key lever lower end penetrate in the described pedestal and with Connect in the middle of the shape compressing tablet.

3, the electrocution-proof protection mechanism of split type electric heater according to claim 1 and 2 is characterized in that: the projection of described protective sleeve is a circular arc.