US2831368A - Arresting mechanisms for use with switches - Google Patents

Arresting mechanisms for use with switches Download PDF

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Publication number
US2831368A
US2831368A US329861A US32986153A US2831368A US 2831368 A US2831368 A US 2831368A US 329861 A US329861 A US 329861A US 32986153 A US32986153 A US 32986153A US 2831368 A US2831368 A US 2831368A
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United States
Prior art keywords
roller
arresting
springs
forces
shaft
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Expired - Lifetime
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US329861A
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English (en)
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Bauer Franz
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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
    • H01H19/02—Details
    • H01H19/10—Movable parts; Contacts mounted thereon
    • H01H19/11—Movable parts; Contacts mounted thereon with indexing means
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20636—Detents

Definitions

  • the present invention relates to an arresting mechanism for use with rotary switches, that is to say, a mechanism for arresting a rotatable member in at least one predetermined position in relation to a counter member.
  • Arresting mechanisms are commonly used with electric multi-position rotary switches in which it is desired to bring the spindle of the switch, forming the rotatable member, into one of several predetermined positions in relation to the housing of the switch which forms the counter member.
  • a typical example of such a switch is the starting switch of an electric railway engine.
  • arresting mechanisms of this kind have usually been constructed in such a manner that at least one, but usually two rollers, mounted on levers, are pressed through tension springs to engage a disc of arresting points, the said levers being pivoted about points located on a circle about the axis of the switch.
  • This mechanism has the disadvantage that the rollers do not move in a straight line in relation of the axis of the switch, but in an arc. Such movement does not allow a ready counter-play of roller and arresting disc.
  • This disadvantage can be diminished by extension of the length of the lever but this however leads to a mechanism of large dimensions.
  • the tension springs are fastened to the levers by means of loops, the loops being formed by bending a part of the spring spiral through 90 in the direction of the axis of the spring.
  • the loops thus formed are considerably susceptible to breakage, and because of this the spring has to be dimensioned more strongly than would be necessary for arresting the switch.
  • the ends of the springs have to be provided with a special suspension arrangement.
  • at least one roller acts over a lever component with springs supplying the restoring force, the said springs being secured on the ends of this component.
  • the axis of the roller is guided in slots which run along in the direction of the movement of the roller.
  • One object of the present invention is to provide an arrangement of the last mentioned kind, which is compact and which, irrespective of its small dimensions, overcomes large arresting forces, without showing any sign of large wear and tear.
  • Fig. 1 shows an arrangement in which the rotatable members can be arrested in any one of six predetermined positions the cover of the housing having been removed
  • Fig. 2 shows in the upper half a section along line Ila- ⁇ Ia and in the lower half a section along a line ilbllb of Fig. 1,
  • Figs. 3 and 4 are plane and side elevations of a guide member of the mechanism shown in Figs. 1 and 2,
  • I Fig. 5 serves to illustrate the distribution of forces, according to the invention
  • Figs. 6-8 show the second embodiment for twelve predetermined positions and with a permanently fixed arresting member; in detail,
  • Fig. 6 shows a front view of the mechanism with the cover removed
  • Figs. 7 and 8 are sections through the mechanism along the lines VIIVII respectively VIII-VIII of Fig. 6 the latter section showing only a single component, namely the housing.
  • Figs. 1 and 2 1 is the shaft of an electric switch (not shown) of the kind having a six position switch element.
  • the shaft 1 forms the rotatable member, and a housing 2 forms the counter-member.
  • An arresting component 3 is fixedly mounted on the shaft 1.
  • two rollers 4 are provided, and these rollers rest by means of shafts 5 in two bridge-like components 6 respectively, hereinafter referred to as the roller bearing members.
  • the roller bearing members are well known and in this embodiment consist of two trapezoid sheet-iron parts, which are joined at 6 by two bridges respectively.
  • the two bridges at 6 provide counter-bearings for compression springs 7.
  • Other'forms of the roller bearing members may be employed depending on the material used for the members, the material of course not necessarily having to be a metal, and on the manner of manufacture (punched components, pressure cast components or presscomponents). In Fig. 1, only the centre lines 7' of the two lower compression springs are shown. All the springs havea secondbearing in recesses of the housing 2.
  • roller shafts 5 protrude in a sideward manner beyond the trapezoid components of the roller bearing members and are guided in slots 9 which may be provided immediately in the housing 2 and in the cover component 2'.
  • slots 9 are grooved into separate guide members 10, which are then inserted into respective recesses in the components 2, 2, this embodiment being illustrated in Figs. 1, 2.
  • the guide member 10 can be seen clearly in the lower half of the Fig. 1, in which the lower bridge is shown in a dotted line, and in the Figs. 3 and 4.
  • the two guide members 10 may, of course, be formed as one single press-component, which if the occasion arises also provides the spring counter-bearings.
  • the roller shaft 5 carrying the roller 4 is rotatably mounted in the member 6, bearing advantageously with a certain amount of side-play.
  • the member .6 is shown in section showing the two bridges 6', forming the bearings for the springs.
  • the springs are represented by the forces A produced by them. If the arresting member 3 of Fig. 1 is turned in a clock-wise direction, it exerts a force on the roller 4 approximately in the direction P. This force is split up into an upward directed component force P, and a horizontal component force P", the component force F effecting the lifting of the roller bearing member 6 against the forces A, and the component force P" being taken up by the member 10, or more precisely by the slots 9 thereof.
  • This distribution of forces is improved if the shaft 5 is mounted in the bearing member 6 with a certain amount of play, because the slot 9 can then transform the forces acting on the shaft 5 only in the direction of the component force P on to member 6, provided, of course, that the guiding by the slots 9 is sufiiciently accurate, in which case the shaft 5 will not touch the side of the bearing in the member 6, the said shaft being suspended therein.
  • the member 6 may be rotatable about the shaft 5 so that if the two forces A are not exactly the same, as may be the case in practice, the member 6 can take up a slant position during the lifting thereof until a position is reached where moments of the forces A are equal in relation to the shaft 5.
  • the Figs. 6-8 show a second embodiment of the invention in which a large number of predetermined arrestin positions (twelve in Fig. 6) are obtained.
  • the example according to Figs. 6*8 use for this purpose a stationary arresting member 15 with arresting points facing inwardly.
  • the member 15 is then the counter member.
  • the rotatable member is the spindle 16 which belongs to a switch.
  • On the spindle 16 are fixed two guide members 17 rigidly mounted on the spindle 16 for turning movement.
  • the members 16 are provided with slots 18 which carry the shafts 19 of rollers 20.
  • the shafts 19 rest in roller bearing members 21 in the hereinbefore described manner, the roller bearing members acting at their ends on compression springs 22.
  • the parts 17, 20 and 21 in Fig. 6 are partly omitted, the parts not omitted being shown by dotted lines.
  • the manner of action is as follows:
  • the embodiment shown in Fig. 6 is not a cinematographic inversion of the embodiment shown in Fig. 1, not even if one disregards the dilferent number of arresting positions and other structural diiferences.
  • the cinematographic inversion of the embodiment shown in Figs. 1 and 2 would be such that the shaft 1 is held stationary and the housing 2 rotatable. The components should then follow the turning movement of the housing, whereas the guiding components 17 of the embodiment shown in'Figs. 6 and 7 follow the turning movement of the shaft, and the housing is held stationary.
  • Fig. 8 shows a section through the housing 15 which carries the arresting grooves on a ring 25, but it is to be understood that this manner of construction is not essential.
  • the bearing of the shafts 1 and 16 in the housing 2 and cover 2, and in the housing 15 and cover 15 respectively is not shown in detail, but is, of course to be provided.
  • the invention permits numerous constructive forms of the mechanism.
  • the number of springs which are to be put under tension per switching movement can be chosen to be difierent from the number shown.
  • the roller bearing members carrying the rollers need not be set at 180 to one another, which of course is not possible when an odd number of predetermined positions is required.
  • the rollers and their shafts may consist of a single member, if this arrangement is preferred and if necessary roller bearings may be used.
  • a second pair of roller bearing members may be provided, these members being displaced in relation to the other pair through so as to bring about, in a small space, large arresting forces.
  • the combination of compression springs and tension springs is also pos sible. It is to be understood that the expression springs may include, for example, rubber bufiers.
  • a holdingmechanism for holding a rotatable member in at least one predetermined position in relation to a stationary member comprising, in combination: a cam operatively connected with said rotatable member and having a toothed periphery, at least one roller engaging said periphery and being movable by the rotation thereof, a roller bearing yoke having two ends, means for mounting the roller centrally on the yoke with a clearance in a direction transverse to the direction of movement of the roller, a pair of compression springs acting upon the ends of the yoke with a force opposing the force of movement of the roller engaged by the rotating cam periphery, and radial guide means for guiding the roller substantially without transverse play in the direction of its movement.
  • a holding mechanism for holding a rotatable member in at least one predetermined position in relation to a stationary member comprising, in combination, acam fixedly mounted on the rotatable member and having a toothed periphery, at least one roller engaging said periphery and being movable by the rotation thereof, a roller bearing yoke having a central slot arranged transversely 'to the direction of movement of the roller the roller being trunnioned in said slot, a pair of compression springs acting upon the yoke with a force opposing the force of movement of the roller engaged by the rotating cam periphery, and a guide member having a radial slot for guiding the roller in the direction of its movement substantially without transverse play.

Landscapes

  • Bearings For Parts Moving Linearly (AREA)
  • Push-Button Switches (AREA)
  • Road Paving Machines (AREA)
US329861A 1952-01-22 1953-01-06 Arresting mechanisms for use with switches Expired - Lifetime US2831368A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT311345X 1952-01-22

Publications (1)

Publication Number Publication Date
US2831368A true US2831368A (en) 1958-04-22

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ID=3671347

Family Applications (1)

Application Number Title Priority Date Filing Date
US329861A Expired - Lifetime US2831368A (en) 1952-01-22 1953-01-06 Arresting mechanisms for use with switches

Country Status (6)

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US (1) US2831368A (de)
BE (1) BE516673A (de)
CH (1) CH311345A (de)
DE (1) DE1067500B (de)
FR (1) FR1073433A (de)
GB (1) GB721989A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3183317A (en) * 1963-07-23 1965-05-11 Gen Electric Rotary switch employing two-step releasing mechanism and reset energy storage means
US3271534A (en) * 1965-03-23 1966-09-06 Leeds & Northrup Co Multi-point rotary switch with improved detent arrangement
US3480748A (en) * 1967-10-16 1969-11-25 Electro Tec Corp Index mechanism for rotary switches
US5449258A (en) * 1993-10-26 1995-09-12 Itt Corporation Retainer clip and shaft fastener apparatus and method
US5735171A (en) * 1993-10-26 1998-04-07 Itt Corporation Pivot joint with retainer clip

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3300594A (en) * 1965-09-20 1967-01-24 Spectrol Electronics Corp Electric switch having a rotor with a resiliently deformable detent beam member
DE4010037A1 (de) * 1990-03-29 1991-10-02 Hilti Ag Bohrgeraet mit schaltgetriebe
JP4613217B2 (ja) * 2008-03-11 2011-01-12 ホシデン株式会社 押しボタンスイッチ

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1038567A (en) * 1910-10-14 1912-09-17 Morris D Greengard Electrical switch.
US1896850A (en) * 1929-05-01 1933-02-07 Gen Electric Notching mechanism
US2115284A (en) * 1936-04-22 1938-04-26 Oak Mfg Co Indexing mechanism
US2130219A (en) * 1935-12-09 1938-09-13 Oak Mfg Co Index mechanism
US2409656A (en) * 1945-04-20 1946-10-22 Harold S Austin Hypodermic syringe
US2579169A (en) * 1950-07-20 1951-12-18 Us Instr Corp Indexing mechanism
US2639338A (en) * 1951-06-05 1953-05-19 Honeywell Regulator Co Selector switch

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE511530C (de) * 1929-06-01 1930-10-30 Aeg Handgesteuerter elektrischer Schalter
DE637069C (de) * 1935-04-24 1936-10-20 Siemens Schuckertwerke Akt Ges Kantelgesperre fuer Drehschalter mit an den Rastenkoerpern gelagerten frei schwingenden doppelarmigen Hebeln
DE699834C (de) * 1938-06-25 1940-12-07 Aeg Rollenschaltwerk fuer Drehschalter
CH226217A (de) * 1941-01-30 1943-03-31 Reutlinger Strickmaschinenfab Fadenspanner mit elektrisch wirkender Abstellvorrichtung, insbesondere für Flachstrickmaschinen.
CH231132A (fr) * 1943-04-14 1944-02-29 Gardy Particip App Combinateur.
GB633808A (en) * 1947-12-15 1949-12-30 Craig & Derricott Ltd Improvements relating to rotary electric switches
FR994452A (fr) * 1949-07-01 1951-11-16 Dispositif destiné à assurer à un contacteur électrique des positions d'arrêt à espacement angulaire déterminé
DE820917C (de) * 1949-07-12 1951-11-15 Busch Jaeger Luedenscheider Me Sprungwerk fuer Wechselstromschalter

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1038567A (en) * 1910-10-14 1912-09-17 Morris D Greengard Electrical switch.
US1896850A (en) * 1929-05-01 1933-02-07 Gen Electric Notching mechanism
US2130219A (en) * 1935-12-09 1938-09-13 Oak Mfg Co Index mechanism
US2115284A (en) * 1936-04-22 1938-04-26 Oak Mfg Co Indexing mechanism
US2409656A (en) * 1945-04-20 1946-10-22 Harold S Austin Hypodermic syringe
US2579169A (en) * 1950-07-20 1951-12-18 Us Instr Corp Indexing mechanism
US2639338A (en) * 1951-06-05 1953-05-19 Honeywell Regulator Co Selector switch

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3183317A (en) * 1963-07-23 1965-05-11 Gen Electric Rotary switch employing two-step releasing mechanism and reset energy storage means
US3271534A (en) * 1965-03-23 1966-09-06 Leeds & Northrup Co Multi-point rotary switch with improved detent arrangement
US3480748A (en) * 1967-10-16 1969-11-25 Electro Tec Corp Index mechanism for rotary switches
US5449258A (en) * 1993-10-26 1995-09-12 Itt Corporation Retainer clip and shaft fastener apparatus and method
US5735171A (en) * 1993-10-26 1998-04-07 Itt Corporation Pivot joint with retainer clip

Also Published As

Publication number Publication date
FR1073433A (fr) 1954-09-24
CH311345A (de) 1955-11-30
GB721989A (en) 1955-01-19
DE1067500B (de) 1959-10-22
BE516673A (de)

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