US3364317A - Switch actuator arrangement - Google Patents

Switch actuator arrangement Download PDF

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Publication number
US3364317A
US3364317A US506685A US50668565A US3364317A US 3364317 A US3364317 A US 3364317A US 506685 A US506685 A US 506685A US 50668565 A US50668565 A US 50668565A US 3364317 A US3364317 A US 3364317A
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United States
Prior art keywords
cam
shaft
sleeve
switch
discs
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Expired - Lifetime
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US506685A
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English (en)
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Hermle Eduard
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Individual
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Individual
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
    • H01H19/60—Angularly-movable actuating part carrying no contacts
    • H01H19/62—Contacts actuated by radial cams
    • H01H19/623—Adjustable cams

Definitions

  • Cam disks on a shaft are clamped against each other and against an abutment flange by nut means having a smaller diameter than the abutting faces of the cam disks and flange so that the cam discs are resiliently deformed and reliably clamped.
  • each cam disc has to be mounted on the common shaft turnable with respect to the axis thereof and means have to be provided to fix any of the c am discs properly in a desired angular adjusted position.
  • one embodiment of the present invention mainly comprises support means, shaft means rotatab'ly mounted on the support means and provided with an outer screw thread, a plurality. of cam means having each a peripheral cam face and opposite side faces mounted spaced from each other on the shaft means turnably about the axis of the latter, a plurality of abutment means fixed to the shaft means axially spaced from each other and each engaging one side face of a respective one of the plurality of cam means, a ring member for each cam means arranged about the shaft means axially shiftable with respect thereto and engaging with one end face thereof the other side face of the respective cam means, a nut for each ring member threadingly engaged with the outer screw thread on the shaft means and tightly engaging the other end face of the ring member to press the latter against the respective cam means and the cam means against the respective abutment means so as to hold each of the cam means in an angular adjusted position fixed on the shaft means, and a plurality of switch means mounted on the support means and each having
  • the aforementioned shaft means include an elongated shaft and a plurality of sleeve members, one for each cam means, coaxially fixed spaced from each other on the shaft and in this arrangement the outer screw thread is provided on a portion of each sleeve member and the cam means as well as the ring members are respectively mounted on the sleeve mem bers, whereas the nuts are threadin-gly engaged with the outer screw threads on the respective sleeves.
  • each of the abutment means is preferably constituted by a flange provided at one end of the respective sleeve member extending transverse to the shaft axis and the outer screw thread on each sleeve is provided at an end portion thereof opposite the one end on which the flange is provided.
  • Each of the sleeve members may be fixed to the shaft by a pin extending through aligned bores in the shaft and the sleeve member and this pin may project with an outer portion thereof beyond the peripheral surface of the sleeve member into an axial groove in the respective ring member, so that the same pin serves also to prevent rotation of the ring member on the respective sleeve member while permitting axial movement of the ring member relative to the sleeve member.
  • Each of the cam means may be formed by at least tvvo cam discs arranged adjacent each other between the flange of the respective sleeve member and the ring member thereon and each of the cam discs forming the respective cam means has preferable a peripheral surface portion forming part of a cylindrical surface coaxial with the shaft axis and arranged so that when engaged by the switch is closed may be adjusted.
  • each of the cam discs may in such an arrangement be provided with an annular peripheral axially projecting position adjacent the peripheral surface thereof and arranged in such a manner that an annular abutment face on one cam disc engages the flange of the respective sleeve member, whereas the annular abutment face on the other cam means engages a side face of the first mentioned cam disc facing away from the flange.
  • the aforementioned annular abutment faces on the two cam discs are arranged radially outwardly of the outer periphery of the ring member so that when the ring member is pressed against the side face of the cam disc which is spaced farthest from the flange, the two cam discs will be resiliently pressed against each other and against the abutment flange of the respective sleeve member.
  • the various switch means are preferably arranged on a common support member forming part of the support means and this common support member is preferably of U-shaped cross section forming an elongated channel having a bottom wall facing the axis of the shaft means and the plurality of the switch means are respectively arranged at least in part in the channel.
  • the bottom wall of the common support member is preferably formed with a plurality of spaced bores therethrough in which the operating members of the switch means are respectively guided for movement toward and away from the axis of the shaft means.
  • Spring means are preferably provided for pressing the operating member of each switch means in a direction toward the axis of the shaft means.
  • FIG. 1 is a longitudinal cross section through the switch arrangement according to the present invention.
  • FIG. 2 is a partially sectioned side view of the arrangement shown in FIG. 1.
  • the switch arrangement preferably comprises a housing having a lower part in the end walls 12 and 14 of which bearing bushings 16 and 18 are respectively mounted, each carrying a bearing 22.
  • an elongated shaft 20 is turnably mounted projecting with end portions thereof beyond the bearings 22.
  • Means, not shown in the drawing, are coupled with one of the end portions of the shaft 20 for rotating the latter about its axis and the other end portion of the shaft is preferably covered by a cap, as shown at the right side of FIG. 1.
  • a plurality of sleeve members 46 are coaxially fixed, in a manner as will be described later on, spaced from each other on the shaft 20, and each of the sleeve members 46 is provided at one end thereof with an annular flange 44 projecting substantially normal to the axis of the shaft 20 from one end of the respective sleeve member, whereas the outer peripheral surface of each sleeve is provided at an end portion thereof spaced from the flange 44 with an outer screw thread 46.
  • the shaft 26 and the plurality of sleeves 46 fixed thereto constitute shaft means rotatably mounted on the support means formed by the housing portion 10 and the bearings mounted thereon.
  • a plurality of cam means are mounted on the shaft means turnably about the axis of the latter.
  • Each of the cam means is preferably constituted by at least two cam discs 38 and 40 which are mounted adjacent each other on the peripheral surface of each sleeve 46.
  • Each of the cam discs is preferably provided adjacent the outer periphery thereof with an axially projecting portion 56 forming an annular shoulder and the annular abutment face of each portion 56 of each cam disc 38 engages a corresponding abutment face of the respective flange 44, whereas the annular projecting portion 56 of each cam disc 40 engages the side face of the cam disc 38 facing away from the flange 44.
  • Each of the cam discs 38 and 40 has a peripheral surface portion 42 (FIG.
  • a nut 52 is provided for each sleeve 46 and having an inner screw thread threadingly engaging with the outer screw thread 46' at one end of each sleeve.
  • Each nut 52 is preferably provided with a plurality, for instance four, blind bores extending in radial direction uniformly spaced from each other into the nut so that the end of a pin may be engaged into a respective one of the bores to thus conveniently turn the nut 52 in one or the other direction.
  • a ring member 50 is preferably sandwiched between each cam disc 40 and the respective nut 52 so that by turning the nut in tightening direction, an inner portion of ring 50 will be pressed against the cam disc 40 and the axially projecting portion 56 thereof will be pressed against the cam disc 38, whereas the projecting portion 56 on the cam disc 38 will be pressed against the flange 44 on the respective sleeve 46 to hold thereby the two cam discs 38 and 40 on each sleeve in proper adjusted angular position with respect to each other as well as in proper angular position with respect to the cam discs on the other sleeves.
  • the flanges 44 of the sleeves 46 constitute therefore abutment means each engaging one abutment face of a respective one of the plurality of cam means, the latter being constituted by the pair of cam discs 38 and 40 on each sleeve 46.
  • each ring member '50 t0 the respective sleeve member 46 nonrotatable with respect thereto, but slidable in axial direction.
  • These means for each ring are preferably constituted by a pin 48 tightly fitted in a transverse bore in the shaft 20 and extending in radial direction through a correspondingly aligned bore through the sleeve member to project with an end portion thereof beyond the peripheral surface of the sleeve member.
  • each of the pins 48 serves therefore to fix the respective sleeve member 46 to the shaft 20 and to prevent rotation of each ring member 50 relative to the sleeve 46 on which it is mounted while permitting the ring to slide on the sleeve member in axial direction.
  • the radius of ring member 50 is smaller than the radial distance of the rims 56 from the shaft so that holding means 50, 52 acts on an inner portion of cam disc 4% radially spaced from the abutting portions 56. Consequently, the pressure of nut 52 resiliently deforms cam disc 28, 40 to assure a reliable clamping.
  • each flange 44 is preferably provided with a graduation line 44' and the peripheral cam faces of the cam discs 38 and 46 are also preferably provided with a plurality of graduations 38' and 40,
  • each cam disc relative to the cam disc adjacent thereto and relative to the flange of the respective sleeve 46 on which the two cam discs are mounted.
  • graduations are shown only on the second cam means from the left, as shown in FIG. 1, but it is to be understood that all cam means are provided with such graduations and that the graduation lines 44 on the flanges are all aligned along a line parallel to the shaft axis.
  • Each switch 26 has operating means comprisingan operating member 32 projecting toward the axis of shaft 20 and slide member 34 extending about each operating member 32 and guided movable toward and away from the axis of the shaft 2i) in a respective bore formed through the bottom wall of the support member 28.
  • the end of each member 34 projecting beyond the outer face of the bottom wall of the member 23 is preferably rounded and adapted to engage the cam faces 42 of the pair of cam discs 38 and 40 forming the cam means cooperating with the respective switch 26.
  • a coil spring 36 located in a bore of the member 34 and engaging with opposite ends thereof the inner end of this bore and a side wall of the switch 26 is preferably wound about the operating member 32 so as to press the member 34 into engagement with the cam faces 42 of the cam means cooperating with the respective switch.
  • An annular shoulder provided on the inner end of each member 34 permits limited movement of each member 34 toward the shaft axis.
  • the arrangement is made in such a manner that when the acting cam faces 42 of the respective cam means engage the end of the member 34 the latter is pressed toward the switch 26 against the action of the coil spring 36 to press thereby the operating member 32 into the switch 26 to close the latter, whereas when the acting cam faces 42 of the respective cam discs have moved past the end of the member 34 the latter is pressed by the spring 36 toward the axis of the shaft 2% until the annular shoulder on the member 34 engages the end wall of the support member 28 so that the respective switch 26 will open.
  • the common support member 2% is mounted on a pair of brackets 30, respectively formed on the end portions 12 and 1d of the housing member by means of screws as shown in FIG. 2.
  • the housing is closed by an upper housing member 23: removably connected to the lower housing member fit in any convenient manner.
  • the non-rotatable ring 59 sandwiched between each nut 52 and the corresponding cam disc 40 will prevent that during tightening of the respective nut 52 any torsional moment is imparted to the respective cam discs, preventing thereby change of the adjusted position of the cam discs during tightening of the nut.
  • This operation is repeated for the cam discs on each sleeve, whereby the cam discs on each sleeve are not only adjusted relative to each other but also with respect to the cam discs on the other sleeves.
  • the shaft 29 is then rotated by any convenient means so that the plurality of switches 26 will be opened and closed in a desired sequence.
  • Switch actuator arrangement comprising, in combination, shaft means having an outer thread, and at least one abutment means having a circumferential portion with a first abutment face radially spaced from said shaft means; at least one cam disk means for operating a switch and mounted on said shaft means for axial and turning movement and having a circumferential portion with a second abutment face located opposite said first abutment face and being radially spaced from said shaft means, at least one of said portions projecting in axial direction toward the other of said portions and forming a shoulder; and at least one holding means including nut means mounted on said shaft means in threaded engagement with said outer thread on the side of said cam disk means remote from said abutment means, said holding means having a radius smaller than the radial distance of said first and second abutment faces and of said shoulder from said shaft means, said holding means exerting pressure in axial direction on an inner portion of said cam disk means to move the same into a position in which said second abutment face abuts
  • Switch actuator means as claimed in claim 1 wherein said cam disk means includes two cam disks mounted adjacent each other on said shaft means for axial move ment and for turning movement relative to each other, the one of said cam disks adjacent said abutment means having said axially projecting circumferential portion, and the other of said cam disks having a circumferential portion axially projecting toward said one cam disk and having a third abutment face abutting said one cam disk so that the inner portions of said cam disks are axially spaced from each other and from said abutment means; and wherein said holding means acts on an inner portion of said other cam disk to resiliently clamp said other cam disk against said one cam disk, and said one cam disk against said abutment means whereby said cam disks are connected with said shaft means for rotation.
  • Switch actuator as claimed in claim 1 wherein said holding means include a ring member having a radius smaller than the radius of said nut means and located between said nut means and said inner portion of said cam disk means; and wherein said shaft means includes a member for guiding said ring member in axial direction and blocking turning movement of the same so that pressure of said nut means against said ring member is transmitted by the same in axial direction to said inner portion without transmission of a torque to said cam disk means.
  • Switch actuator arrangement as claimed in claim 5 wherein said ring member has an inner surface surrounding said shaft means and formed with an axially extendin g groove; and wherein said guiding member is a pin radially projecting from said shaft means into said groove for guiding said ring member in axial direction.

Landscapes

  • Switches With Compound Operations (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
US506685A 1964-11-12 1965-11-08 Switch actuator arrangement Expired - Lifetime US3364317A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH0054275 1964-11-12

Publications (1)

Publication Number Publication Date
US3364317A true US3364317A (en) 1968-01-16

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US506685A Expired - Lifetime US3364317A (en) 1964-11-12 1965-11-08 Switch actuator arrangement

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US (1) US3364317A (es)
DE (1) DE1249973B (es)
FR (1) FR1453594A (es)
GB (1) GB1090930A (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483344A (en) * 1966-09-10 1969-12-09 Eduard Hermle Adjustable switch actuating arrangement
US5305781A (en) * 1992-03-20 1994-04-26 Bray International, Inc. Valve positioning monitoring apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8317321D0 (en) * 1983-06-25 1983-07-27 Fletcher Sutcliffe Wild Ltd Brake monitor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2190337A (en) * 1938-02-21 1940-02-13 Penn Electric Switch Co Combination fan and limit control
US2245369A (en) * 1939-10-19 1941-06-10 Vapor Car Heating Co Inc Cam switch
US2745918A (en) * 1953-03-16 1956-05-15 David W Henry Timers
US2978553A (en) * 1956-09-06 1961-04-04 Clark Controller Co Rotary cam switches
US3200209A (en) * 1962-01-05 1965-08-10 Leeds & Northrup Co Adjustable controller for predeter-mined control-programs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2190337A (en) * 1938-02-21 1940-02-13 Penn Electric Switch Co Combination fan and limit control
US2245369A (en) * 1939-10-19 1941-06-10 Vapor Car Heating Co Inc Cam switch
US2745918A (en) * 1953-03-16 1956-05-15 David W Henry Timers
US2978553A (en) * 1956-09-06 1961-04-04 Clark Controller Co Rotary cam switches
US3200209A (en) * 1962-01-05 1965-08-10 Leeds & Northrup Co Adjustable controller for predeter-mined control-programs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483344A (en) * 1966-09-10 1969-12-09 Eduard Hermle Adjustable switch actuating arrangement
US5305781A (en) * 1992-03-20 1994-04-26 Bray International, Inc. Valve positioning monitoring apparatus

Also Published As

Publication number Publication date
GB1090930A (en) 1967-11-15
FR1453594A (fr) 1966-06-03
DE1249973B (es)

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