US3649781A - Selectively variable timer with improved integral clutch cam structure - Google Patents
Selectively variable timer with improved integral clutch cam structure Download PDFInfo
- Publication number
- US3649781A US3649781A US83488A US3649781DA US3649781A US 3649781 A US3649781 A US 3649781A US 83488 A US83488 A US 83488A US 3649781D A US3649781D A US 3649781DA US 3649781 A US3649781 A US 3649781A
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- United States
- Prior art keywords
- combination
- shaft
- actuator element
- actuator
- accordance
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- 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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- 238000007667 floating Methods 0.000 claims description 29
- 230000013011 mating Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 6
- 230000000977 initiatory effect Effects 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000005224 forefinger Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F3/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork
- G04F3/06—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with electric driving mechanisms
Definitions
- ABSTRACT A selectively variable timer especially useful for refrigerators and the like for initiating defrost cycles wherein unique design of the timer permits easy mounting of an actuator member, selected from a provided group, to actuate a selectively variable switch member to initiate cycles and meet a variety of needs without major reconstruction of the device.
- the interchangeable actuator member is driven through a clutchlike train and is provided with one or a plurality of cam surfaces to operate a pressure switch shiftably mounted with respect to the cam surface to vary the period of circuit energization and deenergization and wherein a clutch train permits simple infield testing of the device.
- Manufacturerss inventories are substantially reduced in that one basic motor and timer, having the interchangeable feature, eliminates the need of having a plurality of individual motors and associated timers to meet a multiplicity of needs.
- An example of an appliance that requires periodic initiation of support or maintenance functions is the refrigerator having, for example, a freezer compartment.
- the freezer compartment In order to maintain a high degree of cooling efficiency, the freezer compartment must be periodically defrosted which function in advanced model refrigerators, is accomplished automatically.
- the device performing this function is the primary intent of the invention disclosed herein.
- the invention is directed to selectively variable timer comprising a motor member, having an extending shaft, secured to a housing member which is juxtapositioned to the motor member and which is adapted to receive the extending shaft of the motor.
- the housing member is adapted to house a rotor member mounted on the shaft to be driven thereby and a switch member which is mounted adjacent to the rotor member.
- the rotor member periodically actuates the switch member to energize and deenergize an electrical circuit.
- the rotor member mounted on the shaft comprises a driving element and a demountable, interchangeable actuator element to actuate the switch member which is movably mounted towards and away from the actuator element to vary the time period of actuation thereof.
- FIG. 1 is a side view of an exemplary selectively variable timer in accordance with the invention
- FIG. 2 is a top view of the device shown in FIG. 1 with the top cover and circuitry removed for purposes of clarity;
- FIG. 3 is a view in partial cross section taken along he line 3-3 of FIG. 2;
- FIGS. 4, 5, 6 and 7 illustrate the interchangeable, easily demountable actuator members used in conjunction with the device depicted in FIGS. 1 and 2;
- FIG. 8 is an exploded view of the device shown in FIGS. I and 2 illustrating more detail thereof.
- the selectively variable timer 2 of this invention basically comprises motor member 4 of common design for the end uses contemplated herein, having extending stub shaft 6, energized by the usual power leads 8 so that shaft 6 constantly revolves or rotates at a uniform rate.
- housing member 10 Juxtapositioned to motor member 4 in retained relationship therewith is housing member 10 of general rectangular configuration in this instance, having bottom wall 12 and sidewalls 14 defining an open top chamber 16.
- Housing member 10 may be fabricated of thin wall, high-impact strength plastic as by molding or the like, and may be provided with integral, interior extending bosses 18, 20 and 22 for purposes which will be described.
- Bottom wall 12 is provided with aperture 24 through which shaft 6 of motor 4 extends.
- a plurality of spaced through holes 26 may be provided for accommodating various electrical contact post members 28 (FIG. 1) and for providing circulation of the ambient atmosphere within chamber 16 of housing member 10. Locator-retaining pins 21 and 23 may also be provided, if desired, on the interior of wall 12 for purposes as will become apparent.
- a rotor member generally designated 30 comprising one-way clutch member 32 seated on shaft 6 and adapted to rotate therewith.
- an aperture 34 provided in clutch member 32 has a flat side 36 to fit over and correspond to the configuration of shaft 6 of motor 4.
- the one-way clutch member 32 is provided with tooth surface 38 for the accomplishment of driving functions, in this instance in the counterclockwise direction as will be described.
- J ustapositioned in overlying relationship to one-way clutch 32 is floating, clutch-face member 40 of disclike configuration having spaced lugs 42 around the periphery thereof and being provided with aperture 44 of diameter sufficient to accommodate shaft 6.
- the lower face 46 of floating clutch-face member 40 is provided with congruent tooth surfaces as tooth surface 38 to engage one-way clutch member 32 in coacting and driven relationship.
- Floating clutch-face member 40 is received within actuator member 48 of cylindrical design having an actuator surface generally designated 50 having one or a plurality of spaced lobes or cams 52 integrally formed thereon.
- the upper extending portion 54 of actuator element 48 terminates in a postlike configuration provided with a slot such as 56 by which means the actuator element 48 may be reversably rotated independent of the remainder of the rotor member 30. This is accomplished by having the interior configuration of member 48 slotted as at 58 to receive lugs 42 of floating clutch-face member 40, the floating action being obtained by coil spring member 60 disposed on the upper planar surface of clutch-face member 40.
- actuator element 48 is of hollow configuration to receive coil spring 60, clutch-face member 40 and one way clutch member 32 and maintained in assembled form by a cover plate as will be described.
- each one of the actuator elements 48, 48, 48" and 48" are interchangeable and easily replaceable with each other and the assemblage with which they are used for purposes that will become apparent.
- the configuration of each one of the actuator elements bearing the numeral 48 are the same except for the number of cam surfaces or lobes 52 provided on the exterior peripheral surface thereof.
- the actuator element, for example 48 rotates once each 24 hours to effect actuation of a switch member as will be described every six hours.
- the cam or lobes 52 are spaced approximately 90 apart, l where actuation is desired every 8 hours, as for the 48' embodiment, 180 apart where actuation is desired every 12 hours as in the 48" embodiment and so on.
- an appropriate actuator element 48 is selected pursuant to the needs of the device with which the devices ofthis invention will ultimately be used.
- switch base 62 Secured within housing member 4, as by means of cement or the like, for example, is switch base 62 mounting microswitch 64 of conventional design, having the usual pressure actuated switch element 68.
- Pressure switch 64 is movably secured to base plate 62 as by means of bolt 70 and nut 72 disposed through arcuate slot 74 such that switch 64 is movable to the extent thereofinto and out of proximity to actuator member 48 and more directly, the cams or lobes 52 located on the peripheral surface thereof.
- the thickness of base plate 62 is sufficient to bring pressure switch element 68 into engaging position with respect to cams 52 and is provided with extending apertured bosses 76 to receive locator-retaining pins 21 and 23.
- Bosses 76 also provide means of handling the assembled switch and base and provide mechanical protection for the switch that it carries. Also extending from the upper surface of base plate 62 is stub mounting shaft 78 which is received by a hole 79 in switch member 64 provided for that purpose so that switch 64 is pivotally mounted thereabout through the arc defined by slot 74 as heretofore described.
- base plate 62 may be provided with a lip, rib or the like, usually found in plastic molded products, so as to provide an accommodating space for nut 72 such that baseplate 62 is in stable contacting relationship with the interior surface of bottom wall 12 of housing member 10.
- cover 80 is provided, in this case of lightweight metal, which is secured to member 10 by means of screws 82 engaging apertures provided in bosses 18, 20, and 22 of housing member 10 and provided for this purpose. lt will be noted that cover 80 is provided with, in addition to screw holes 84, a larger aperture 86 to accommodate the projecting end 54 and abut the shoulder 55 of actuator element 48 to retain rotor 30 in proper assembly.
- Cover 80 may be provided with notches 88 adapted to interfit, where desired, with tabs 90 of housing 10. So that the timer 2 may be mounted in and with a variety of devices, for example refrigerators, aligned holes 94 and 96 are provided with offset aligned apertures 98 and 100. This spacious relationship, along with aligned apertures 102 and 104, provide for universal mounting of the selectively variable timer of the invention with a selected one of a multitude of commercially available refrigerators and the like. Recesses in the area of the screws 82 may be provided to allow flush disposition of the screwheads with respect to the remainder of the surface of cover 80.
- the slot 56 is outwardly presented by which means a coin (shown in phantom) or the like, may be inserted to rotate the actuator element 48 through a full revolution or more, if desired, for test purposes.
- a coin shown in phantom
- clutch-face member 40 is oppositely rotatable with respect to one-way clutch member 32 because of the beveled tooth surfaces of each of the members which allow for free rotation in the clockwise direction which, of course, permits testing of the device without removal of cover plate 80 or waiting for the motor 4 to bring the earns 52 of actuator 48 into contact with pressure switch element 68.
- the housing member 10 as well as rotor member 30, and
- the components thereof, (with the exception of coil spring 60) and baseplate 62, may all be fabricated as by molding with high-strength plastic material of appropriate electrical properties consistent with the end uses desired and, at least in the rotor member 30, of high wear and durability characteristic, keeping in mind the frictional wear involved in normal operation of the device. Obviously, other materials of construction are contemplated and indeed will be necessary, depending upon the ultimate end uses to which the devices of this invention are put.
- a metal cover plate 80 is preferred because it will receive a mounting bracket, not shown, and metal, in this particular instance, is preferable to plastic or other types of materials.
- a conventional slot would suffice just as well, or where space considerations are not important, this portion may extend further than shown to allow for more ready grasping by the thumb and forefinger of a serviceman for ease of rotation thereof as previously described.
- a selectively variable timer device which fulfills a variety of needs in a unique manner to provide devices of the character described herein easily and selectively varied, depending upon the ultimate uses desired.
- a motor member having an extending shaft, secured to a housing member juxtapositioned said motor member and adapted to receive said extending shaft and house a rotor member mounted on such shaft to be directly driven thereby and a switch member adjacent said rotor member to be periodically actuated to energize and deenergize an electric circuit; said rotor member mounted on said shaft comprising a driving element and a single demountable and interchangeable actuator element; and a switch member movably mounted, in said housing, with respect to said actuator element to vary the time period of actuation thereof.
- said actuator element comprises a cylindricallike portion having at least one cam surface on the exterior thereof and which is adapted to receive said floating clutch member in the interior thereof in nestled relationship.
- a motor member having an extending shaft projecting into a juxtapositioned housing member; a rotor element secured to said shaft within said housing member, comprising a first annular clutch member secured to said shaft and having a beveled tooth upper surface, a second floating clutch member having an under surface of beveled tooth design for engagement with said clutch member and having peripheral spaced lugs, a coil spring carried by the upper surface of said floating member and an actuator member of cylindrical design adapted to receive said one-way clutch member, coil spring and floating clutch member and having at least one cam surface on the exterior wall thereof; a switch member pivotally mounted in proximity to said actuator member such that rotation of said actuator member brings said at least one cam surface into engaging and actuating relationship with said switch member to energize or deenergize an electrical circuit and a cover plate member covering said housing member and being provided with an aperture to permit access to said actuator member so that it may be rotated opposite its normal driven direction.
- a motor member having an extending shaft secured to a housing member juxtapositioned said motor member and adapted to receive said extending shaft and house a rotor member mounted on such shaft to be driven thereby; a switch member adjacent said rotor member to be periodically actuated to energize and deenergize an electric circuit, said rotor member mounted on said shaft comprising a driving element secured to said shaft and a demountable and interchangeable actuator element which is independently and reversibly rotatable with respect to said driving element, said driving element having a tooth face surface meshing into engaging relationship with a mating tooth face surface of a floating clutch face member operatively associated with said actuator element and acting as a one-way clutch, said actuator element comprising a cylindrical-like portion having at least one cam surface on the exterror thereof and adapted to receive said floating clutch member in the interior thereof in nestled relationship; and a spring member positioned between said floating clutch face member and the interior of said cylindrical-like portion of said actuator element.
- said cover plate additionally has at least pairs of aligned holes to permit universal mounting of said timer with a selected one of a plurality of refrigerators.
Abstract
Description
Claims (14)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8348870A | 1970-10-23 | 1970-10-23 |
Publications (1)
Publication Number | Publication Date |
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US3649781A true US3649781A (en) | 1972-03-14 |
Family
ID=22178674
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US83488A Expired - Lifetime US3649781A (en) | 1970-10-23 | 1970-10-23 | Selectively variable timer with improved integral clutch cam structure |
Country Status (1)
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US (1) | US3649781A (en) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3767876A (en) * | 1972-11-17 | 1973-10-23 | Singer Co | Remote mechanical switch for actuating a power tool with particular microswitch locating means |
US3825781A (en) * | 1973-01-15 | 1974-07-23 | Gen Electric | Magnetically driven timer |
JPS513072U (en) * | 1974-06-24 | 1976-01-10 | ||
US4488071A (en) * | 1983-03-11 | 1984-12-11 | Lucas Industries Public Limited Company | Motor operated mechanism |
US5506377A (en) * | 1993-10-12 | 1996-04-09 | Emerson Electric Co. | Limit switch carrier assembly |
US6080943A (en) * | 1999-08-02 | 2000-06-27 | France/Scott Fetzer Company | Timer |
US6137067A (en) * | 1999-06-15 | 2000-10-24 | France/Scott Fetzer Company | Pushbutton hand dryer timer |
US6583371B1 (en) | 2001-11-02 | 2003-06-24 | France/Scott Fetzer Company | Timer |
US6613991B1 (en) | 1999-08-02 | 2003-09-02 | France/Scott Fetzer Company | Timer |
US20040090871A1 (en) * | 1999-08-02 | 2004-05-13 | France/Scott Fetzer Company | Timer |
US20080237000A1 (en) * | 2007-03-28 | 2008-10-02 | Japan Servo Co., Ltd. | Micro switch mounting structure and automatic icemaker |
KR101855514B1 (en) | 2017-07-13 | 2018-06-08 | 주식회사 디알텍 | Ice maker of tact switch |
US20180372389A1 (en) * | 2017-06-26 | 2018-12-27 | Dr Tech Co., Ltd. | Ice maker with adjusting apparatus for water supply |
WO2019004489A1 (en) | 2017-06-26 | 2019-01-03 | 주식회사 디알텍 | Ice maker having water supply control device |
KR102084557B1 (en) | 2019-01-22 | 2020-03-04 | 주식회사 디알텍 | Ice maker of ice drops guided |
KR102084560B1 (en) | 2019-01-09 | 2020-04-23 | 주식회사 디알텍 | Ice maker with measuring device for water level |
KR102082796B1 (en) | 2019-08-21 | 2020-04-24 | 주식회사 디알텍 | Driving method for ice maker |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2753406A (en) * | 1954-02-17 | 1956-07-03 | Gen Electric | Electric switch mechanism |
US3126759A (en) * | 1959-07-15 | 1964-03-31 | Timing mechanism for washing machines and like equipment | |
US3214985A (en) * | 1962-08-09 | 1965-11-02 | Controls Co Of America | Timer |
US3221117A (en) * | 1963-09-09 | 1965-11-30 | Mallory & Co Inc P R | Adjustable cam time sequence control |
US3306997A (en) * | 1965-05-06 | 1967-02-28 | Franklin Electric Co Inc | Limit switch control for a motor drive |
-
1970
- 1970-10-23 US US83488A patent/US3649781A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2753406A (en) * | 1954-02-17 | 1956-07-03 | Gen Electric | Electric switch mechanism |
US3126759A (en) * | 1959-07-15 | 1964-03-31 | Timing mechanism for washing machines and like equipment | |
US3214985A (en) * | 1962-08-09 | 1965-11-02 | Controls Co Of America | Timer |
US3221117A (en) * | 1963-09-09 | 1965-11-30 | Mallory & Co Inc P R | Adjustable cam time sequence control |
US3306997A (en) * | 1965-05-06 | 1967-02-28 | Franklin Electric Co Inc | Limit switch control for a motor drive |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3767876A (en) * | 1972-11-17 | 1973-10-23 | Singer Co | Remote mechanical switch for actuating a power tool with particular microswitch locating means |
US3825781A (en) * | 1973-01-15 | 1974-07-23 | Gen Electric | Magnetically driven timer |
JPS513072U (en) * | 1974-06-24 | 1976-01-10 | ||
JPS5542352Y2 (en) * | 1974-06-24 | 1980-10-03 | ||
US4488071A (en) * | 1983-03-11 | 1984-12-11 | Lucas Industries Public Limited Company | Motor operated mechanism |
US5506377A (en) * | 1993-10-12 | 1996-04-09 | Emerson Electric Co. | Limit switch carrier assembly |
US6137067A (en) * | 1999-06-15 | 2000-10-24 | France/Scott Fetzer Company | Pushbutton hand dryer timer |
US20040079624A1 (en) * | 1999-08-02 | 2004-04-29 | France/Scott Fetzer Company | Timer |
US6613991B1 (en) | 1999-08-02 | 2003-09-02 | France/Scott Fetzer Company | Timer |
US6080943A (en) * | 1999-08-02 | 2000-06-27 | France/Scott Fetzer Company | Timer |
US20040090871A1 (en) * | 1999-08-02 | 2004-05-13 | France/Scott Fetzer Company | Timer |
US6797897B2 (en) | 1999-08-02 | 2004-09-28 | France/Scott Fetzer Company | Timer |
US6838628B2 (en) | 1999-08-02 | 2005-01-04 | France/Scott Fetzer Company | Timer |
US6583371B1 (en) | 2001-11-02 | 2003-06-24 | France/Scott Fetzer Company | Timer |
US20080237000A1 (en) * | 2007-03-28 | 2008-10-02 | Japan Servo Co., Ltd. | Micro switch mounting structure and automatic icemaker |
US7619172B2 (en) * | 2007-03-28 | 2009-11-17 | Nidec Servo Corporation | Micro switch mounting structure and automatic icemaker |
US20180372389A1 (en) * | 2017-06-26 | 2018-12-27 | Dr Tech Co., Ltd. | Ice maker with adjusting apparatus for water supply |
WO2019004489A1 (en) | 2017-06-26 | 2019-01-03 | 주식회사 디알텍 | Ice maker having water supply control device |
US10605513B2 (en) * | 2017-06-26 | 2020-03-31 | Dr Tech Co., Ltd. | Ice maker with adjusting apparatus for water supply |
KR101855514B1 (en) | 2017-07-13 | 2018-06-08 | 주식회사 디알텍 | Ice maker of tact switch |
KR102084560B1 (en) | 2019-01-09 | 2020-04-23 | 주식회사 디알텍 | Ice maker with measuring device for water level |
KR102084557B1 (en) | 2019-01-22 | 2020-03-04 | 주식회사 디알텍 | Ice maker of ice drops guided |
KR102082796B1 (en) | 2019-08-21 | 2020-04-24 | 주식회사 디알텍 | Driving method for ice maker |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: GEM PRODUCTS, INC., A CA CORP., CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MCKINNON, EUGENE T.;DRUTZ, ALVIN S.;REEL/FRAME:004174/0788 Effective date: 19830720 Owner name: GEM PRODUCTS, INC., 1660 EUCLID ST. SANTA MONICA, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:MCKINNON, EUGENE T.;DRUTZ, ALVIN S.;REEL/FRAME:004174/0788 Effective date: 19830720 |
|
AS | Assignment |
Owner name: SECURTIY PACIFIC BUSINESS CREDIT INC., CALIFORNIA Free format text: SECURITY INTEREST;ASSIGNOR:GEM PRODUCTS, INC., A CORP. OF CA.;REEL/FRAME:004561/0845 Effective date: 19850913 Owner name: SECURTIY PACIFIC BUSINESS CREDIT INC., 45 SOUTH HU Free format text: SECURITY INTEREST;ASSIGNOR:GEM PRODUCTS, INC., A CORP. OF CA.;REEL/FRAME:004561/0845 Effective date: 19850913 |