GB2241037A - Microwave oven door catch mechanism - Google Patents

Microwave oven door catch mechanism Download PDF

Info

Publication number
GB2241037A
GB2241037A GB9001336A GB9001336A GB2241037A GB 2241037 A GB2241037 A GB 2241037A GB 9001336 A GB9001336 A GB 9001336A GB 9001336 A GB9001336 A GB 9001336A GB 2241037 A GB2241037 A GB 2241037A
Authority
GB
United Kingdom
Prior art keywords
microwave oven
switches
oven door
catch mechanism
catch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9001336A
Other versions
GB9001336D0 (en
Inventor
Ralph A Shute
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MICROWAVE HEATING APPLIANCES L
Original Assignee
MICROWAVE HEATING APPLIANCES L
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MICROWAVE HEATING APPLIANCES L filed Critical MICROWAVE HEATING APPLIANCES L
Priority to GB9001336A priority Critical patent/GB2241037A/en
Publication of GB9001336D0 publication Critical patent/GB9001336D0/en
Publication of GB2241037A publication Critical patent/GB2241037A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/6414—Aspects relating to the door of the microwave heating apparatus
    • H05B6/6417—Door interlocks of the microwave heating apparatus and related circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/08—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body in connection with the locking of doors, covers, guards, or like members giving access to moving machine parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
    • H01H9/226—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts the casing containing electrical equipment other than and operated by the switch

Abstract

A microwave oven door catch mechanism 1 has two fixed catch pegs 1 which are attached to the oven door. Two corresponding latches 2 form part of a sliding assembly that is spring loaded to create a latching effect that will hold the door in a closed position. Two switches 3 are mounted to the assembly one being activated by each catch when it has interlocked with its latch and the door is safely closed. in order to minimize the size of the mechanism in the region of the lower catch where space may be limited, both switches are situated at the top of the assembly. One of the switches being activated by a mechanical linkage from the lower latch. The small cross sectional area of this mechanism makes it ideal for insertion into a small latch compartment within a single skinned microwave oven. <IMAGE>

Description

MICROWAVE OVEN DOOR CATCH MECHANISM.
Descriotion of Tnvention A door catch mechanism for use on microwave ovens; In a microwave oven it is necessary for the latching door catches to activate switches before the power source can be energised. Wanly microwave ovens utilise a double skin construction and locate the switches between the oven cavity and an outer wrap.
This invention however is concerned with single skin ovens in which one or more of the latches is situated in its own compartment within the oven cavity (fig 1).
For practical reasons it is desirable that this intrusion into the cooking space be as small as posible.
This invention alows the switches to be situated remotely from the catches. therefour minimising the space loss in the oven itself Figure 2 shows the arrangement of the components. The invention comprises; 1 Two fixed catch pegs 2 Two connected latches that are sprung in a vertical plane to create a latching effect.
3 Switches situated in a unit forming part of the upper latch, one or more of the switches being activated by the interlocking of the upper catch.
4 A rocker situated in the vacinity of the lower latch such that it is tipped only when the lower catch interlocks with its latch 5 A push rod that transfers the motion of the rocker to one of the switches successfully activating it.
A door catch mechanisum built to this arangement can be inserted into a very small conpartment that causes the minimum of intrusion into the oven

Claims (6)

  1. CLAIMS 1 A microwave oven door catch mechanism comprising two or more catches fixed to the oven door, two moevable spring loaded latch pieces, two switches that are connected to and move with said latch pieces, a mechanical linkage that is connected to and moves with said latch pieces such that when said catches mate with said latches one or more of said switches is operated by one of said catches via said mechanical linkage.
  2. 2 A microwave oven door catch mechanism as claimed in claim 1 wherein said switches are positioned remotely from one or more of the latches.
  3. 3 A microwave oven door catch mechanism as claimed i claim 1 or claim 2 wherein one or more of said switches is directly operated by one or more of said catches when door is latched.
  4. 4 A microwave oven door catch mechanism as claimed Ir: claim 2 or 3 wherein Mechanical means are provided to move said moveable latches effectivly unlatching the door.
  5. 5 A microwave oven door catch mechanism as claimed in any preceding claim for use on a single skin microwave oven.
  6. 6 A microwave oven door catch mechanism substartiaThThy as described herein with reference to figures i an, 2 of the accompanying drawing.
GB9001336A 1990-01-19 1990-01-19 Microwave oven door catch mechanism Withdrawn GB2241037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9001336A GB2241037A (en) 1990-01-19 1990-01-19 Microwave oven door catch mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9001336A GB2241037A (en) 1990-01-19 1990-01-19 Microwave oven door catch mechanism

Publications (2)

Publication Number Publication Date
GB9001336D0 GB9001336D0 (en) 1990-03-21
GB2241037A true GB2241037A (en) 1991-08-21

Family

ID=10669628

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9001336A Withdrawn GB2241037A (en) 1990-01-19 1990-01-19 Microwave oven door catch mechanism

Country Status (1)

Country Link
GB (1) GB2241037A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4101750A (en) * 1977-05-31 1978-07-18 Whirlpool Corporation Door interlock system for microwave oven
US4450335A (en) * 1981-02-02 1984-05-22 Matsushita Electric Industrial Co., Ltd. Door opening apparatus for heating appliance
GB2143410A (en) * 1983-04-26 1985-02-06 Sharp Kk Cooking appliance with switching assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4101750A (en) * 1977-05-31 1978-07-18 Whirlpool Corporation Door interlock system for microwave oven
US4450335A (en) * 1981-02-02 1984-05-22 Matsushita Electric Industrial Co., Ltd. Door opening apparatus for heating appliance
GB2143410A (en) * 1983-04-26 1985-02-06 Sharp Kk Cooking appliance with switching assembly

Also Published As

Publication number Publication date
GB9001336D0 (en) 1990-03-21

Similar Documents

Publication Publication Date Title
SE8903772D0 (en) ELECTROMECHANICAL DOORLESS
KR890017500A (en) Cooker
KR20120031949A (en) Sliding and tilting door assembly
DE3683357D1 (en) LOCKED CONTROL CABINET.
GB1584051A (en) Domestic cooking appliance
US20180318823A1 (en) Laboratory Cabinet
CA2114814A1 (en) Turn knob lampholder
US4826224A (en) Door latch assembly
JPS6347770Y2 (en)
JPH02147006A (en) Cooker housing box
KR100272367B1 (en) Structure of openning and locking door of microwave
ES2137086B1 (en) MICROWAVE OVEN WITH PERFECTED DOOR.
GB2241037A (en) Microwave oven door catch mechanism
US4511780A (en) Door latch assembly for microwave heating apparatus
US3770930A (en) Microwave oven apparatus
JPS61291839A (en) High-frequency heating unit
JPS63118541A (en) Cooking apparatus
KR0138447Y1 (en) Apparatus for open and close of rice cooker
KR100294457B1 (en) Cooking grill
KR100372413B1 (en) An automotive door open handle combined with safety knob
KR100412105B1 (en) Microwave oven
KR200162052Y1 (en) Apparatus for locking the door of a microwave oven
JPS602484Y2 (en) microwave oven
KR950010394Y1 (en) Tv door construction apparatus
JPS60126524A (en) Electronic range

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)