EP0551808A1 - Connection of a shaft with an element, in particular the shaft of a rotary setting member with a setting wheel - Google Patents

Connection of a shaft with an element, in particular the shaft of a rotary setting member with a setting wheel Download PDF

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Publication number
EP0551808A1
EP0551808A1 EP93100037A EP93100037A EP0551808A1 EP 0551808 A1 EP0551808 A1 EP 0551808A1 EP 93100037 A EP93100037 A EP 93100037A EP 93100037 A EP93100037 A EP 93100037A EP 0551808 A1 EP0551808 A1 EP 0551808A1
Authority
EP
European Patent Office
Prior art keywords
shaft
wheel
opening
connection
recess
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.)
Withdrawn
Application number
EP93100037A
Other languages
German (de)
English (en)
French (fr)
Inventor
Albert c/o Kodak Aktiengesellschaft Kilgus
Rainer c/o Kodak Aktiengesellschaft Debler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kodak GmbH
Eastman Kodak Co
Original Assignee
Kodak GmbH
Eastman Kodak Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kodak GmbH, Eastman Kodak Co filed Critical Kodak GmbH
Publication of EP0551808A1 publication Critical patent/EP0551808A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/08—Turn knobs
    • H01H3/10—Means for securing to shaft of driving mechanism
    • 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

Definitions

  • the invention relates to a connection of a shaft with an element, in particular the shaft of a rotary setting member with a setting wheel, said connection comprising a recess provided for seating the shaft in said element and an opening by which said recess is connected to the outer edge of said element and through which the connection can be effected by relative movement of the shaft and the element transversely to the axis of said shaft.
  • connections of this type are as a rule used if lack of space or special spatial or constructional circumstances render it difficult or impossible to bring the shaft and the recess forming its seat or bearing into engagement by a relative movement in the axial direction (relative to the axis of the shaft). If there is not sufficient space available a given shaft length can prevent the shaft from being inserted by axial shifting into a recess which serves as a bearing in a bearing block or plate. If the first element including such a recess is a wheel which is to be brought into position on a shaft lack of space or special reasons of manufacture or assembly may also forbid shifting of the wheel onto the shaft from the shaft end.
  • this object is attained with a connection of the aforementioned type in that a second element is inserted into the opening in a direction transverse to the axis of the shaft and in that interlocking means provided on said first and said second element cooperate to fix the second element in the opening of the first element.
  • a second element which can be inserted into the opening of the first element, the first element whose outer contour was initially interrupted by the opening extending up to its edge, can be given a desired shape, e.g. a closed shape, by the insertion of the second element.
  • connection is intended for linking a shaft to a wheel
  • the opening in the wheel portion, which forms the first element and includes the recess for the shaft, and the insert which forms the second element can be shaped in a particularly advantageous manner such that when the connection is completed, the wheel connected with the shaft has a closed uninterrupted contour and/or exhibits the desired wheel shape.
  • the second element is for example a wheel segment by which a setting wheel is completed
  • wheel segment may be made from a material differing in color from the rest of the wheel and thus serving at the same time as a colored setting mark on the circumference of the wheel.
  • Figs. 1 to 3 show the connection according to the invention with reference to a setting wheel 1 which is to be mounted on a non-circular portion of a shaft 3.
  • shaft 3 is the setting shaft of an adjusting potentiometer (not illustrated) which serves as a rotary setting member.
  • the potentiometer is attached to a printed circuit board (not illustrated) on the upper surface facing away from the conductors such that shaft 3 extends in parallel with the circuit board and setting wheel 1 is received with its rim in a slot of said circuit board.
  • the solder pins thereof are plugged through the circuit board and are then electrically connected with the conductor paths on the lower side of the circuit board in that said lower part of the circuit board along with the free ends of the solder pins is moved across a solder bath.
  • This soldering operation must be carried out before the setting wheel is positioned on shaft 3 of the potentiometer because otherwise the setting wheel would be immersed in the solder bath with its rim projecting from the slot of the lower side of the circuit board.
  • a setting wheel made from plastic for example would thus be damaged in that the portion immersed would melt.
  • setting wheel 1 is a center disk wheel molded from plastic and provided on part of its circumference with projections 5 forming a knurled surface which facilitates manual rotation. Between its rim featuring the projections 5 and an adjacent inner hub portion 7, the wheel disk has a portion 9 which is thinner than the rest and extends over the majority of the circumference of the wheel.
  • Hub portion 7 includes a recess 11 in the central portion of wheel 1, which serves to seat the noncircular shaft 3.
  • Recess 11 is part of an opening 13 which extends to the periphery of the wheel so that wheel 1 is open on part of its circumference.
  • the entire opening 13 can be closed by a wedge 15 which is molded from plastic and shaped such that when it is placed in the opening 13 the circumference of setting wheel 1 is at least substantially completed and a closed wheel thus formed.
  • Wedge portion 17 which is located close to recess 11 when the wedge is inserted is shaped like recess 11 such that it fits the noncircular portion of shaft 3 positioned in recess 11 and, in cooperation with the edge of recess 11, connects the shaft with setting wheel 3 in a manner preventing rotation.
  • the thickness of wedge 15 corresponds to that of hub portion 7 of wheel 1.
  • wedge 15 forms an arcuate section.
  • the edges of opening 13 are provided with strips 21 and 23 which are axially offset relative to each other (with respect to the axis of shaft 3) such that the outer surface of one strip is flush with the outer surface of hub portion 7 on one side of the wheel and the other strip is flush with the outer surface of hub portion 7 on the other side of the wheel.
  • the strips 21 and 23 thus provide facing inner step surfaces for mounting the facing inner surfaces of lateral wings 25 and 27 respectively integrally formed with wedge 15 in a position complementary to that of the strips 21, 23 of wheel 1.
  • the end faces of wheel 1 which in the area of the strips 21 and 23 face the end faces of wedge 15 and rest against said faces, may form acute angles with the step surfaces formed by the strips 21 and 23 so that when the end faces of wedge 15 are inclined accordingly, wedge 15 is locked with wheel 1.
  • the strips 21 and 23 have projections 29 and 31 respectively which are brought into locking engagement with locking noses 33 and 35 respectively of wedge 15 when the wedge is inserted into opening 13.
  • the locking noses 33 and 35 respectively can override the rear sides of the projections 29, 31 in that wedge 15 is resilient in the range of noses 33, 35.
  • the resiliency is brought about in that wedge 15 has in its central area a cut-out 39 which allows it to be deformed in the adjacent areas in the manner indicated in Fig. 3 in dash-dotted lines.
  • This also allows wedge 15 to be removed after insertion by means of a tool such as a screwdriver blade 41, shown in section in Fig. 3, which is inserted between locking nose 35 and strip 23 to urge nose 35 out of engagement with projection 31.
  • connection between setting wheel 1 and shaft 3 can be effected in that wheel 1 is moved transversely to the axis of shaft 3 as indicated by the arrow 43 in Fig. 1.
  • wedge 15 is inserted by an opposite insertion movement transversely to the axis of shaft 3 - see arrow 45 in Fig. 1 - into opening 13, with the locking noses 33 and 35 engaging the projections 29 and 31 respectively.
  • Fig. 2 depicts the completed connection in which shaft 3 is fixed against rotation in recess 11 of hub portion 7 of the wheel.
  • Setting wheel 1 can be axially fixed on shaft 3 in various manners.
  • the edges of the slot of the circuit board in which setting wheel 1 is received serve as abutments by which axial movement of the wheel is limited.
  • the shaft section seated in hub portion 7 of wheel 1 could be a tapered section in the form of an annular groove.
  • a wheel could also be rotatably mounted on the associated shaft.
  • the recess in hub portion 7 of wheel 1 and the adjacent portion 17 of wedge 15 would have to be adapted to the circular shape of the shaft.
  • Wedge 15 may consist of a material which differs in color from the material of wheel 1 so that wedge 15 forms a colored section on the circumference of wheel 1, which may serve as a setting mark or the like.
  • Figs. 4 and 5 those parts whose shapes or functions correspond to those of parts of the embodiment according to Figs. 1 to 3, have reference numerals to which 100 has been added in each case. They show an embodiment in which a rotary shaft 103 is to be connected with a stationary bearing block 101. In a manner analogous to that described with reference to the embodiment in Figs. 1 to 3, the connection is effected by relative movement of the elements transversely to the axis of shaft 103.
  • the design of recess 111 of bearing block 101 and portion 117 of wedge 115, which defines recess 111, is adapted to the round shape of shaft 103.
  • Fig. 4 shows the elements prior to their connection
  • Fig. 5 shows the completed connection.
  • wedge 115 is shaped at its outside 119 such that it completes the outer contour of bearing block 101 and a closed body with a straight edge is thus obtained.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Details Of Measuring And Other Instruments (AREA)
  • Mechanical Control Devices (AREA)
EP93100037A 1992-01-14 1993-01-05 Connection of a shaft with an element, in particular the shaft of a rotary setting member with a setting wheel Withdrawn EP0551808A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9200345U DE9200345U1 (xx) 1992-01-14 1992-01-14
DE9200345U 1992-01-14

Publications (1)

Publication Number Publication Date
EP0551808A1 true EP0551808A1 (en) 1993-07-21

Family

ID=6875002

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93100037A Withdrawn EP0551808A1 (en) 1992-01-14 1993-01-05 Connection of a shaft with an element, in particular the shaft of a rotary setting member with a setting wheel

Country Status (3)

Country Link
EP (1) EP0551808A1 (xx)
JP (1) JPH0694857A (xx)
DE (1) DE9200345U1 (xx)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR328905A (fr) * 1903-01-28 1903-07-21 Emanuel Kottusch Assemblage sans vis d'organes de transmission en deux parties, tels que poulies, colliers de serrage, etc.
DE836372C (de) * 1950-02-25 1952-04-10 Siemens Ag Befestigung von Bedienungsgriffen
WO1986001266A1 (en) * 1984-08-08 1986-02-27 American Snapnut Associates Shaft-mounted snap lock assembly and tool

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR328905A (fr) * 1903-01-28 1903-07-21 Emanuel Kottusch Assemblage sans vis d'organes de transmission en deux parties, tels que poulies, colliers de serrage, etc.
DE836372C (de) * 1950-02-25 1952-04-10 Siemens Ag Befestigung von Bedienungsgriffen
WO1986001266A1 (en) * 1984-08-08 1986-02-27 American Snapnut Associates Shaft-mounted snap lock assembly and tool

Also Published As

Publication number Publication date
DE9200345U1 (xx) 1992-03-05
JPH0694857A (ja) 1994-04-08

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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18W Application withdrawn

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