US3091675A - Combination latching and switch control arrangement for electrical appliances - Google Patents
Combination latching and switch control arrangement for electrical appliances Download PDFInfo
- Publication number
- US3091675A US3091675A US173229A US17322962A US3091675A US 3091675 A US3091675 A US 3091675A US 173229 A US173229 A US 173229A US 17322962 A US17322962 A US 17322962A US 3091675 A US3091675 A US 3091675A
- Authority
- US
- United States
- Prior art keywords
- latch assembly
- assembly
- switch
- striker
- cabinet
- 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.)
- Expired - Lifetime
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4251—Details of the casing
- A47L15/4257—Details of the loading door
- A47L15/4259—Arrangements of locking or security/safety devices for doors, e.g. door latches, switch to stop operation when door is open
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S292/00—Closure fasteners
- Y10S292/69—Washing machine or stove closure latch
Definitions
- This invention relates to latching equipment, and more particularly to combination latching and switch control apparatus for use in electric appliances such as dishwashers.
- a more specfic object of my invention is to achieve the aforementioned object by providing a latch assembly to which is rigidly secured a switch member, the switch member being closed by a striker member only when the striker member has engaged the latch assembly in fully closed position.
- I provide an electric appliance, such as a dishwasher for instance, of the type which has a cabinet, a closure member for the cabinet, and at least one electrical component, such as a motor, which should be deenergized when the closure member is opened to provide access to the cabinet.
- a latch assembly is pivotally mounted on a support which, in turn, is rigidly secured to the cabinet and is biased to a predetermined position by any appropriate means.
- a switch assembly is rigidly mounted on the latch assembly; in the conventional manner, the switch assembly may be included in the control circuit for the electrical component so as to control its energiz-ation. The switch assembly is biased to open position, but has a member movable to closed position to cause the switch assembly to be closed.
- a striker member secured to the closure member has both a camrning surface and a latching recess formed thereon.
- the camming surface of the striker engages the latch assembly and pivots it away from its predetermined position until the camming surface ceases to engage the latch assembly.
- the biasing means forces the latch assembly back toward its pre-determined position into the recess. This occurs when the closure member is fully closed.
- the switch assembly is carried into a position relative to the striker member such that the switch assembly is closed and energization of the electrical components is made possible.
- the provision of the switch assembly rigidly mounted on the latch assembly gives the desired relationship to the striker member so as to cause the switch to be closed only 3,991,675 Patented May 28, 1963 "Ice as latching is completed and to be opened as soon as unlatching is started.
- FIGURE 1 is a side elevational view, partly broken away and partly in section, of a portable automatic dishwasher incorporating my invention
- FIGURE 2 is a fragmentary side elevational view, partly broken away and partly in section, of the parts of the dishwasher of FIGURE 1 which incorporate the cooperating parts which form my invention;
- FIGURE 3 is a sectional view along line 3-3 of FIG- URE 2;
- FIGURE 4 is a sectional view along line 44 of FIG- URE 3.
- FIGURE 1 of the drawing there is shown a portable automatic dishwasher, generally indicated by the numeral 1, having a cabinet 2 forming an enclosed tub 2a of generally rectangular configuration, it being understood that the tub forms the washing compartment.
- Tub 2a may be provided with a sloping bottom 3 which forms a sump space 4.
- appropriate racks shown by the numerals 5 and 6, on which dishes to be washed may be placed, access to the interior of tub 2a being provided through the top 7 thereof when closure member or cover 8- is pivoted about hinges 9 to an open position from the closed position shown.
- the hinge assembly 9 include appropriate biasing means to cause the cover 8 to move upwardly at least a small distance when, as is to be explained, it is unlatched from its closed position.
- Liquid is supplied to the machine by any suitable means (not shown), the particular supply arrangement forming no part of the present invention.
- a rotary impeller 10 Positioned at the bottom of the tub 2a and arranged to circulate the washing fluid through the washing compartment is a rotary impeller 10.
- a drain pump 11 having an inlet communicating with tub 2. and an outlet connected to drain conduit 12 is supported beneath the tub, the housing of pump 11 being arranged to support an electric motor 13 which drives the impeller 10 so as to circulate fluid in the tub when rotating in one direction and to operate pump 11 so as to discharge fluid through conduit 12 when driven in the other direction.
- Automatic operation of the dishwasher 1 is effected by a suitable timer controlled assembly (not shown) which controls the energization of the Water supply means as well as of the electric motor 13, it being understood that motor 13 is illustrated as being one typical electrical component of the type conventionally provided in appliances such as the dishwasher illustrated.
- a dishwasher of the type illustrated in FIG- URE 1 is arranged to provide a plurality of washing steps, in each of which a measured quantity of water is admitted to the tub, circulated for a pre-determined period of time, and then discharged from the tub in preparation for the next washing step.
- the dishes in the washing compartment may be dried, preferably by circulation of heated air, a heating unit such as sheathed electrical heating unit 14 being useful for this purpose.
- the top of the walls forming the tub 2a are provided with a gasket 15 as shown in FIGURES l and 2; the gasket extends entirely around the top of the tub, so that when lid or cover member 8 is moved to the closed position shown its lower surface engages the gasket 15 and prevents escape of liquid from thetub 2a during dishwashing operations.
- a striker member 17 At the front of the cover 8, there is secured by any suitable means, such as threaded members 16, a striker member 17.
- Member 17 extends downwardly from the cover member, and passes through an opening 18 provided in a decorative front cover panel piece 19 as the cover 8 reaches its closed position.
- the striker 17 includes a camming surface 20 starting at its lower end, and which terminates abruptly so that the striker member then forms a latching recess 21.
- a rigid support member 23 Secured to the front wall of cabinet 2 by any suitable means, such as threaded members 22, there is provided a rigid support member 23 which fits Within the decorative front piece 19.
- the supporting member 23 has a substantially horizontally extending top section 24 in which is formed a downwardly projecting boss '25.
- a latching assembly structure 27 Pivotally secured to the boss 25 by any suitable means such as a rivet 26 is a latching assembly structure 27 which, as best seen by reference to FIGURES 3 and 4, includes a flat section 27a extending through a slot 28 formed in a flange 29 projecting downwardly from section 24.
- the slot 28 serves as a horizontal support for the assembly 27 thereby taking a large part of the load off rivet 26 and preventing an undesirable cantilever action.
- the width of the slot 28 it provides limits on the extent of movement of assembly 27.
- the left end of assembly 27, as viewed in FIGURE 4, is formed as a broadened support section 30 for one end 31 of a spring 32 whose other end 33 is secured to a flange 34 (FIGURE 2) extending downwardly from section 24 of member 23.
- the spring 32 serves to bias the assembly 27 in a counter clockwise direction as viewed in FIGURE 4, that is, against the lower end of the slot 28.
- portion 30 which is toward the decorative front wall 19 is formed with a downwardly extending flange 35.
- a pushbutton member 36 is positioned within an opening 37 in the member 19; member 36 has a base 38 larger than the opening 37 so as to limit outward movement of the button and also serve as a part to be engaged by the flange 35. It will thus be seen that the spring 32 serves to keep the pushbutton member 36 biased outwardly through opening 37 in this manner.
- Switching assembly 40 has only its outline indicated since the switch structure may be any of many conventional types wherein depression of a projecting outwardly biased member 41 causes closure of the switch, and the normal biased position of the member 41 causes the switch to be open.
- a suitable switch assembly for this purpose is, for instance, marketed by the General Electric Company, assignee of the present invention.
- a spring arm 42 seen in FIGURES 2 and 3, is secured at one end 43 to the remainder of the switch assembly 40 and is free at its other outer end 44, as best seen in FIGURE 2.
- the spring arm 42 is in contact with the switch operating member 41 so that when the spring arm is forced down toward the body of switch assembly 40 it pushes the member 41 inwardly and causes closure of the switch. As soon as pressure on the spring arm is released it returns to a position wherein the member 41 may move outwardly to cause the switch to assume its normal open position.
- the switch assembly 40 will normally be so connected with certain of the electrical components of dishwasher 1, such as the motor 13, that when the switch is open it prevents energization of those components which should not be energized during an open condition of the cover 8 such as, for instance, motor 13.
- the striker member 17 is so positioned relative to the flat part 27a of assembly 27 that when the cover 8 is brought down, the striker member 17 will pass down through an opening 45 in section 24 of member 23, and the camming surface 20 thereof will engage the edge 46 of flat part 27a.
- This camming engagement of surface 20 with the flat part 27a forces the assembly 27 in a clockwise direction, as viewed in FIGURE 4, that is, against the ac tion of spring 32, as the striker member 17 continues on its downward passage.
- the spring 32 pivots the assembly 27 back toward its previous position so that the flat part 27a enters the latching recess 21 of the striker member 17.
- my invention provides a highly effective and economical structure, by means of which latching and switching are synchronized with each other in an effective and desirable way without any necessity for worrying about manufacturing tolerances since the structures are assembled in such a way that the correct relationship is insured.
- the same effect is achieved if the striker member is slidably mounted and the latching and switch assemblies are stationary, and this reversal of parts is intended to be included within the scope of my invention; the primary point is that the movable par-t move gene-rally perpendicular to the direction of movement of the cover as it reaches closed position,
- switch assembly rigidly mounted on said latch assembly, said switch assembly being adapted to control energization of said electrical component and biased to open position, said switch assembly having a member movable to a closed position wherein said switch [assembly is closed;
- a striker member secured to said closure member and positioned to move substantially perpendicularly to the plane of movement of said latch assembly into engagement therewith, said striker member having a camming surface and a latching recess formed thereon;
- said camming surface being formed to engage said latch assembly as said closure member closes and pivot said latch assembly away from its predetermined position, said biasing means forcing said latch assembly toward said predetermined position into said recess when said closure member is fully closed, said striker member and said switch assembly being relatively positioned so that said switch assembly member is engaged by said strike-r member and is moved to its closed position only when said latch assembly is in said striker member recess;
- said cabinet includes a front appearance cabinet panel enclosing said latch assembly
- said manually operable means includes a button member having one end extending out through said appearance panel for manual openat-ion and its other end positioned against said latch assembly so that upon manual depression of said button said latch assembly is moved away from its predetermined position.
- a switch assembly rigidly mounted on said latch assembly, said switch assembly being adapted to control energization of said electrical component and biased to open position, said switch assembly having a member movable to a closed position wherein said switch assembly is closed;
- a striker member secured to said closure member and positioned to move into engagement with said latch assembly, said striker member having a camming surface and a latching recess formed thereon;
- one of said latch assembly and striker member being biased to a predetermined position and movably mounted in a plane substantially perpendicular to the direction of movement of said striker memher as it moves into engagement with said latch assembly;
- said camming surface being formed to engage said latch assembly as said closure member closes and pivot said one of said latch assembly and said striker member away from its predetermined position, said one of said latch assembly and striker member moving toward its predetermined position into said recess when said closure member is fully closed, said striker member and said switch assembly being relatively positioned so that said switch assembly member is engaged by said striker member and is moved to its closed position only when said latch assembly is in said striker member recess;
- switch assembly rigidly mounted on said latch assembly, said switch assembly being adapted to control energization of said electrical component and biased to open position, said switch assembly having a member movable to a closed position wherein said switch assembly is closed;
- said camming surface being formed to engage said latch assembly as said closure member closes and pivot said latch assembly away from its predetermined position, said biasing means forcing said latch assembly toward said predetermined position into said recess when said closure member is fully closed, said striker member and said switch assembly being relatively positioned so that said switch assembly member engaged by said striker member and is moved to its closed position only when said latch assembly is in said striker member recess;
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- Washing And Drying Of Tableware (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US173229A US3091675A (en) | 1962-02-14 | 1962-02-14 | Combination latching and switch control arrangement for electrical appliances |
DEG37049A DE1199372B (de) | 1962-02-14 | 1963-02-12 | Verriegelungs- und Schalteranordnung fuer elektrische Geraete |
FR924481A FR1350994A (fr) | 1962-02-14 | 1963-02-12 | Dispositif de loquet et de commande d'interrupteur combinés pour appareil électrique |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US173229A US3091675A (en) | 1962-02-14 | 1962-02-14 | Combination latching and switch control arrangement for electrical appliances |
Publications (1)
Publication Number | Publication Date |
---|---|
US3091675A true US3091675A (en) | 1963-05-28 |
Family
ID=22631085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US173229A Expired - Lifetime US3091675A (en) | 1962-02-14 | 1962-02-14 | Combination latching and switch control arrangement for electrical appliances |
Country Status (2)
Country | Link |
---|---|
US (1) | US3091675A (de) |
DE (1) | DE1199372B (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3371975A (en) * | 1967-02-21 | 1968-03-05 | Henry E. Meltzer | Cooling and carrying box for electric tools and appliances |
US3619592A (en) * | 1970-03-09 | 1971-11-09 | Tappan Co The | Washing machine with illuminated interior |
US3684343A (en) * | 1971-05-05 | 1972-08-15 | Westinghouse Electric Corp | Latch switch arrangement for dishwasher |
US3800108A (en) * | 1971-11-10 | 1974-03-26 | Tokyo Shibaura Electric Co | Door switch for electrical apparatus |
US3854762A (en) * | 1973-08-02 | 1974-12-17 | Whirlpool Co | Rotary handle door latch for dishwashers |
US5174618A (en) * | 1991-12-09 | 1992-12-29 | Maytag Corporation | Door latch assembly |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1649475A (en) * | 1922-12-26 | 1927-11-15 | Elevator Supplies Co Inc | Combined door latch and switch mechanism |
US2618282A (en) * | 1949-01-11 | 1952-11-18 | Mullins Mfg Corp | Dishwasher having lid locking mechanism |
US3005065A (en) * | 1959-12-29 | 1961-10-17 | Gen Electric | Domestic appliance |
US3007479A (en) * | 1958-01-23 | 1961-11-07 | Gen Motors Corp | Latching mechanism for washing apparatus |
-
1962
- 1962-02-14 US US173229A patent/US3091675A/en not_active Expired - Lifetime
-
1963
- 1963-02-12 DE DEG37049A patent/DE1199372B/de active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1649475A (en) * | 1922-12-26 | 1927-11-15 | Elevator Supplies Co Inc | Combined door latch and switch mechanism |
US2618282A (en) * | 1949-01-11 | 1952-11-18 | Mullins Mfg Corp | Dishwasher having lid locking mechanism |
US3007479A (en) * | 1958-01-23 | 1961-11-07 | Gen Motors Corp | Latching mechanism for washing apparatus |
US3005065A (en) * | 1959-12-29 | 1961-10-17 | Gen Electric | Domestic appliance |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3371975A (en) * | 1967-02-21 | 1968-03-05 | Henry E. Meltzer | Cooling and carrying box for electric tools and appliances |
US3619592A (en) * | 1970-03-09 | 1971-11-09 | Tappan Co The | Washing machine with illuminated interior |
US3684343A (en) * | 1971-05-05 | 1972-08-15 | Westinghouse Electric Corp | Latch switch arrangement for dishwasher |
US3800108A (en) * | 1971-11-10 | 1974-03-26 | Tokyo Shibaura Electric Co | Door switch for electrical apparatus |
US3854762A (en) * | 1973-08-02 | 1974-12-17 | Whirlpool Co | Rotary handle door latch for dishwashers |
US5174618A (en) * | 1991-12-09 | 1992-12-29 | Maytag Corporation | Door latch assembly |
Also Published As
Publication number | Publication date |
---|---|
DE1199372B (de) | 1965-08-26 |
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