US2634992A - Knob retaining device - Google Patents

Knob retaining device Download PDF

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Publication number
US2634992A
US2634992A US207377A US20737751A US2634992A US 2634992 A US2634992 A US 2634992A US 207377 A US207377 A US 207377A US 20737751 A US20737751 A US 20737751A US 2634992 A US2634992 A US 2634992A
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US
United States
Prior art keywords
shaft
knob
clip
notches
center portion
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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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US207377A
Inventor
Thomas F Nelson
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General Electric Co
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General Electric Co
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Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to US207377A priority Critical patent/US2634992A/en
Application granted granted Critical
Publication of US2634992A publication Critical patent/US2634992A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/20—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening
    • F16B2/22—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material
    • F16B2/24—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material of metal
    • F16B2/248—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material of metal of wire
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
    • F16B21/20—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts for bolts or shafts without holes, grooves, or notches for locking members
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/08—Controlling members for hand actuation by rotary movement, e.g. hand wheels
    • G05G1/10—Details, e.g. of discs, knobs, wheels or handles
    • G05G1/12—Means for securing the members on rotatable spindles or the like
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7018—Interfitted members including separably interposed key
    • 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
    • Y10T74/20732—Handles
    • Y10T74/20762—Shaft connections

Definitions

  • zandr has as :amimpoflantpbiect h m Patented Apr. 14, 1953 UNITED sures OFFICE KNOB IRETAINING mines New York gp jf, Ngl son, Stratfglr i 4. 91. QSSJEBPI L ene a iE egt l c Seminar a cor ora io o .965 :pf improved means -;for holding a knob-like member inia predetermined .positionon h t.-
  • .Azfurther object of mminyentnn is to prov d ia' etainin nevice which affords slida l a. ne mentnf the z positiqn of .a memh ae ain diune vid .a shear safety r eric greater :than a kg venril il fi li.
  • a kno is: eld ina Astillfurtherpbiechofmy v n throne heme therefrom-in aplane substantially at right aiigles to the p an io h sn e in r ion- 'iIh e tionsare terminated in end sections bent hack toward'the center portionto'jlieat an acnteangle withgrespect to theleg portions.
  • Fig. l is a perspective view of a preferred form of the spring clip of my invention
  • Fig. 2 is an end view of a knob, spring clip, and shaft, which is shown in section, constructed and held together in accordance with one embodiment of my invention
  • Fig. 3 is the same as Fig. 2 except that it illustrates a second embodiment of my invention
  • Fig. 4 is the same as Fig. 2 except that it illustrates a third embodiment of my invention
  • Fig. 5 is a sectional side view of Fig. 4
  • an ..t. :m men by two .9 d s c io s i an is which a bent toward nte no t n lg o l e a a we an le w th-res e to o tion 1b and 1c respe e tr C i .1 sed to ho d a member an ass kn b '.in. predetermin posit on .0 shaft means uch as .gyli, ca haft .3 K 10.
  • Fig. 2 the cylindrical surface of shaft 3 is unaltered so that the knob 2 is retained on the shaft 3 by frictional forces between the cylindrical surface of shaft 3 and portion la of the clip I.
  • the maximum force against which knob 2 is retained on shaft 3 may be determined by the design of spring clip I and the degree of roughness given to the surface of shaft 3. Therefore, this embodiment of the invention is of particular value to retain a knob on a shaft against relatively small axial and circumferential forces but at the same time allowing the knob to be slidably and rotatably adjusted in position relative to the shaft by slightly greater forces.
  • the shaft 3 is provided with two notches 'l and 1' in its surface, these notches being formed with substantially the same angle between them as the angle 'of the V in spring clip I.
  • Notches l and 1' may be of any width along the axis of shaft 3 greater than the diameter of the wire forming spring clip I.
  • center portion la fits snugly into notches I and l, andthe knob is firmly retained on the shaft against axial and circumferential forces. This is probably the most useful form of the embodiment shown in Fig. 3.
  • knob 2 will be firmlyretained on the shaft 3 against circumferential forces but will be semi-firmly retained against axial forces, as in the embodiment of Fig. 2, whereby the knob 2 may be slidably adjusted to any axial position along the shaft within the axial limits of notches l and 1'.
  • the circumferential frictional retaining force between spring and shaft in the embodiment of Fig. 3 may be determined by the design of the spring clip I, the angle between device, limiting the maximum torque transmittable between knob 2 and shaft 3. If the circumferential force between the knob 2 and shaft 3 exceeds the designed circumferential frictional force, the knob will slip upon the shaft until such time that the two forces equalize, when the knob 2 will re-index at the same circumferential position on the shaft 3 and transmit the torque.
  • Figs. 4 and 5 the shaft 3 is provided with an annular groove 8 into which the center portion la of the clip I fits under spring force so that the knob 2 is firmly retained upon the shaft 3 against axial forces but only semi-firmly against circumferential forces depending upon the design of the spring and the roughness of the surface of groove 8.
  • the embodiment shown by Figs. 4 and 5 is most useful when used on a shaft to be moved or pulled axially but which must not be loaded by too great of a circumferential torque.
  • a retaining and indexing device comprising a cylindri'calshaft having two notches in the periphery thereof extending circumferentially of the shaft, a knob having a cylindrical recess therein for receiving said shaft and having two anchoring recesses on opposite sides of said first mentioned recess, a spring wire clip having a v-shaped center portion, two leg portions extending from said center portion in planes substantially at right angles to the plane of said center portion, two end sections terminating said leg portions and each bent toward said center portion to lie at an acute angle with respect to its respective leg portion, said notches being located with respect to one another at an angle normal to the axis of the shaft substantially equal to the angle formed by said V-shaped center portion of said spring clip, said clip positioned with said leg portions thereof each disposed in a different one of said anchoring recesses and with said end section of each leg portion in frictional engagement with the side of its respective anchoring recess, said V-shaped portion'of said spring engaging said shaft in said notches to retain said knob

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Control Devices (AREA)

Description

A ril 14, 1953 T. F. NELSON KNOB RETAINING DEVICE Filed Jan. 25, 1951 1 enbor:
Tho s E Nelson,
His Attorney.
zandrhas as :amimpoflantpbiect h m Patented Apr. 14, 1953 UNITED sures OFFICE KNOB IRETAINING mines New York gp jf, Ngl son, Stratfglr i 4. 91. QSSJEBPI L ene a iE egt l c Seminar a cor ora io o .965 :pf improved means -;for holding a knob-like member inia predetermined .positionon h t.-
.A further ;object ;of Joly jnve;
andconstruction. abeingimorei asi y andzeponamial yre fected han ipllelbiflil new-ices. such as s screws en aging threaded ho es 511: :a shaf an -=member to beretained hereto.
.Azfurther object of mminyentnn is to prov d ia' etainin nevice which affords slida l a. ne mentnf the z positiqn of .a memh ae ain diune vid .a shear safety r eric greater :than a kg venril il fi li. mittedirorna membe n mentzthereof, a kno is: eld ina Astillfurtherpbiechofmy v n throne heme therefrom-in aplane substantially at right aiigles to the p an io h sn e in r ion- 'iIh e tionsare terminated in end sections bent hack toward'the center portionto'jlieat an acnteangle withgrespect to theleg portions. The leg portions-uare forced'into slots inth-eilgnob soLthat the center portion of the spring clip is in "frictional engagement with the shaft.
While my invention will be described as applied to retaining a knob on a shaft, it is to be understood that it is not limited to such application, as the disclosure in this respect is merely illustrative for purposes of explaining the inventive concept.
The features of my invention which I believe to be novel are set forth with particularity in the appended claim. My invention itself, however, both as to its organization and method of operation together with further objects and advantages thereof, may best be understood by reference to the following description taken in connection with the accompanying drawing, in which Fig. l is a perspective view of a preferred form of the spring clip of my invention; Fig. 2 is an end view of a knob, spring clip, and shaft, which is shown in section, constructed and held together in accordance with one embodiment of my invention; Fig. 3 is the same as Fig. 2 except that it illustrates a second embodiment of my invention; Fig. 4 is the same as Fig. 2 except that it illustrates a third embodiment of my invention; and Fig. 5 is a sectional side view of Fig. 4
t onii p-m o- :u
I2 a ong ne 5.1. i lustr tin the en a imeht. some t .2, .3 and of th s in 4113s .With the gkn h seein ,the .snawms. a spr ng clip I is nrbtid d t .psil s l e iion In wh ch is preferabl thesha eo' .Q a t unc te V a i also with two leg portions Ib and to, extend- .in a plan ubstantiall a rig an les to the lane o the c n e po on 1a,. an ..t. :m men by two .9 d s c io s i an is which a bent toward nte no t n lg o l e a a we an le w th-res e to o tion 1b and 1c respe e tr C i .1 sed to ho d a member an ass kn b '.in. predetermin posit on .0 shaft means uch as .gyli, ca haft .3 K 10. isbmtided with a eces !shap d-subtially to con o m .59 th sha .o the sha .s to r cet .an alw n tivoan horine reeases. such the ,re 'tansi a .r' es e 5 and :5 dis o e -ono posit s de f rsc ssfi fo rece ing th ee mama .o the .I [a .shQWn i Fi 'lhe w dih Q ;rsses. andfimushbesuc :thfi'whenthe-leg o tions andl o sli 1' are in ert d t ere n; and seot o s ldand .11 ar de- ;r .ed slightly; ther b a sing sec io d an it itaex rt,nressureqnthe sides v rec ss s fen 4 Imma eria o whic .t sp irie .Ql p I i ;fo me. -sh. 1 besom what harde than th materia from whic jkno 'lis fo m d s tha during an attempted withdrawal of clip -I from its engagement in anchoring recesses 5 and 6, end sections Id and I6 of the leg portions dig into the side of their respective anchoring recesses, tending to prevent Withdrawal therefrom.
After the leg portions Ib and to of the clip 5 have been inserted in recesses 5 and 6, the center portion Ia lies partially over the entrance to recess 4 in knob 2. Thus, when shaft 3 is inserted into recess 4, center portion Ia is forced to the side of the entrance whereby leg portions Ib and I0 are moved toward end sections Id and I6 and a spring pressure is exerted on the shaft 3 by portion Ia and on the sides of recesses 5 and 6 by sections Id and I e.
In Fig. 2 the cylindrical surface of shaft 3 is unaltered so that the knob 2 is retained on the shaft 3 by frictional forces between the cylindrical surface of shaft 3 and portion la of the clip I. The maximum force against which knob 2 is retained on shaft 3 may be determined by the design of spring clip I and the degree of roughness given to the surface of shaft 3. Therefore, this embodiment of the invention is of particular value to retain a knob on a shaft against relatively small axial and circumferential forces but at the same time allowing the knob to be slidably and rotatably adjusted in position relative to the shaft by slightly greater forces.
In Fig. 3, the shaft 3 is provided with two notches 'l and 1' in its surface, these notches being formed with substantially the same angle between them as the angle 'of the V in spring clip I. Notches l and 1' may be of any width along the axis of shaft 3 greater than the diameter of the wire forming spring clip I. Thus, if notches l and l are only slightly greater in width along the axis of shaft 3 than the diameter of the wire forming spring clip I, center portion la fits snugly into notches I and l, andthe knob is firmly retained on the shaft against axial and circumferential forces. This is probably the most useful form of the embodiment shown in Fig. 3.
However, if notches hand i in Fig. 3 are made of greater width and extended along the axis of the shaft 3, the knob 2 will be firmlyretained on the shaft 3 against circumferential forces but will be semi-firmly retained against axial forces, as in the embodiment of Fig. 2, whereby the knob 2 may be slidably adjusted to any axial position along the shaft within the axial limits of notches l and 1'.
Further, the circumferential frictional retaining force between spring and shaft in the embodiment of Fig. 3 may be determined by the design of the spring clip I, the angle between device, limiting the maximum torque transmittable between knob 2 and shaft 3. If the circumferential force between the knob 2 and shaft 3 exceeds the designed circumferential frictional force, the knob will slip upon the shaft until such time that the two forces equalize, when the knob 2 will re-index at the same circumferential position on the shaft 3 and transmit the torque.
In Figs. 4 and 5 the shaft 3 is provided with an annular groove 8 into which the center portion la of the clip I fits under spring force so that the knob 2 is firmly retained upon the shaft 3 against axial forces but only semi-firmly against circumferential forces depending upon the design of the spring and the roughness of the surface of groove 8. Thus, the embodiment shown by Figs. 4 and 5 is most useful when used on a shaft to be moved or pulled axially but which must not be loaded by too great of a circumferential torque.
While the present invention has been described by reference to particular embodiments thereof, it will be understood that numerous modifications may be made by those skilled in the art without actually departing from the invention. I, therefore, aim in the appended claim to cover all such equivalent variations as come within the true spirit and scope of the foregoing disclosure.
What I claim as new and desire to secure by Letters Patent of the United States is:
A retaining and indexing device comprising a cylindri'calshaft having two notches in the periphery thereof extending circumferentially of the shaft, a knob having a cylindrical recess therein for receiving said shaft and having two anchoring recesses on opposite sides of said first mentioned recess, a spring wire clip having a v-shaped center portion, two leg portions extending from said center portion in planes substantially at right angles to the plane of said center portion, two end sections terminating said leg portions and each bent toward said center portion to lie at an acute angle with respect to its respective leg portion, said notches being located with respect to one another at an angle normal to the axis of the shaft substantially equal to the angle formed by said V-shaped center portion of said spring clip, said clip positioned with said leg portions thereof each disposed in a different one of said anchoring recesses and with said end section of each leg portion in frictional engagement with the side of its respective anchoring recess, said V-shaped portion'of said spring engaging said shaft in said notches to retain said knob in a predetermined indexed position with respect to said shaft.
THOMAS F. NELSON.
References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,172,977 Kimball Sept. 12, 1939 2,180,929 Murphy Nov. 21, 1939 2,271,266 Kost Jan. 27, 1942
US207377A 1951-01-23 1951-01-23 Knob retaining device Expired - Lifetime US2634992A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2805876A (en) * 1955-08-12 1957-09-10 Midwest Mfg Corp Knob retainer clip
US3026742A (en) * 1960-08-01 1962-03-27 Albany Machine Tool Corp Locking device for removable handles
US3169032A (en) * 1962-11-30 1965-02-09 Minnesota Mining & Mfg Means for attaching a knob or the like to a shaft
US3234800A (en) * 1961-04-28 1966-02-15 Motorola Inc Pushbutton construction
US3271057A (en) * 1964-07-30 1966-09-06 Kimbro Corp Fastening device
DE102020112764B3 (en) 2020-05-12 2021-09-23 Albrecht Jung Gmbh & Co. Kg Actuating button for electrical / electronic control devices

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2172977A (en) * 1937-10-12 1939-09-12 Gen Electric Push-on type handle
US2180929A (en) * 1937-09-04 1939-11-21 United Carr Fastener Corp Knob fastening installation and knob fastener
US2271266A (en) * 1940-07-23 1942-01-27 Detroit Harvester Co Knob attaching fastener

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2180929A (en) * 1937-09-04 1939-11-21 United Carr Fastener Corp Knob fastening installation and knob fastener
US2172977A (en) * 1937-10-12 1939-09-12 Gen Electric Push-on type handle
US2271266A (en) * 1940-07-23 1942-01-27 Detroit Harvester Co Knob attaching fastener

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2805876A (en) * 1955-08-12 1957-09-10 Midwest Mfg Corp Knob retainer clip
US3026742A (en) * 1960-08-01 1962-03-27 Albany Machine Tool Corp Locking device for removable handles
US3234800A (en) * 1961-04-28 1966-02-15 Motorola Inc Pushbutton construction
US3169032A (en) * 1962-11-30 1965-02-09 Minnesota Mining & Mfg Means for attaching a knob or the like to a shaft
US3271057A (en) * 1964-07-30 1966-09-06 Kimbro Corp Fastening device
DE102020112764B3 (en) 2020-05-12 2021-09-23 Albrecht Jung Gmbh & Co. Kg Actuating button for electrical / electronic control devices

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