US3581581A - Pushbutton set - Google Patents

Pushbutton set Download PDF

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Publication number
US3581581A
US3581581A US826413A US3581581DA US3581581A US 3581581 A US3581581 A US 3581581A US 826413 A US826413 A US 826413A US 3581581D A US3581581D A US 3581581DA US 3581581 A US3581581 A US 3581581A
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US
United States
Prior art keywords
pushbutton
sleeve
button
bar
coupling
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.)
Expired - Lifetime
Application number
US826413A
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English (en)
Inventor
Wilhelmus Hermanus Chr Withoos
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US Philips Corp
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US Philips Corp
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Filing date
Publication date
Application filed by US Philips Corp filed Critical US Philips Corp
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Publication of US3581581A publication Critical patent/US3581581A/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/04—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings operated by hand
    • H03J5/12—Settings determined by a number of separately-actuated driving means which adjust the tuning element directly to desired settings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H25/00—Switches with compound movement of handle or other operating part
    • H01H25/06—Operating part movable both angularly and rectilinearly, the rectilinear movement being along the axis of angular movement

Definitions

  • the invention relates to a pushbutton set for the station selection in a radio or television receiver by means of button bars depressible against spring force and rotatable pushbuttons with simultaneous automatic selection of the wave range, in which the preselection of the desired wave range is performed by depressing and turning of a button.
  • a button can be coupled, by depression, with a coaxial sleeve having differently high teeth oriented backwardly in the axial direction, one of which is chosen during the preselection.
  • a control mechanism governing the wave range switch.
  • the wave range switch is often formed by a sliding switch arranged at right angles to the button bars, in which case the (axial) movement of the pushbutton has to be converted into a sliding movement at right angles thereto, preferably parallel to the sequence direction of the row of pushbuttons.
  • a known transverse slide extending along the row of buttons and having slanting sliding faces, each of which is adapted to cooperate with one tooth or with a plurality of teeth arranged in a known device on the pushbutton itself for the preselection of the wave range.
  • the latter device is very simple, but it has the disadvantage of a great amount of inherent friction, since during displacement the slide is subjected to a lateral force, which is a component of the pressing force required for depressing the button.
  • the invention has for its object to provide a device having a transverse slide, which is, however, not subjected to a lateral force, which said component gives rise to only a small amount of friction, which advantage becomes manifest in the low value of the force required for depressing the button.
  • the button bar not only with the button, but also with a coupling disc having a radial finger, and with a sleeve having an at least partly slanting groove in its cylindrical surface said disc and sleeve being freely rotatable with respect to the button and axially displaceable along with the button bar.
  • On the side of the coupling disc facing the button an axially extending toothing is provided, which is adapted to cooperate with an appropriate toothing on the button, and on the other side the coupling disc an axially projecting toothing having slanting flanks is adapted to cooperate with a toothing on the sleeve, so that by means of the button the disc can be turned stepwise relatively to the sleeve.
  • a stationary, radial pin extends in the slanting groove of the sleeve so that upon an axial displacement of the button bar the sleeve together with the decoupling disc is compelled to perform a rotary movement through a given angle and the radial finger of the coupling disc engages an actuating slide extending at right angles to the button bars and providing with an opening at each of the fingers, said slide actuating a wave range switch.
  • FIG. I is a plan view
  • FIG. 2 is a rear view of one embodiment
  • FIG. 3 is a partial, sectional view of a pushbutton and bar.
  • FIG. I shows a pushbutton set having a row of metal button bars 3, slidably arranged in a frame I and provided each at the foremost end in FIG. 1 the lowermost end with a rotatable hollow pushbutton 5 of a synthetic resin, which is freely displaceable relative to the bar, by means of which button the bars can be depressed against the force of a counterspring 7.
  • the depressed position is indicated by the push button 5 and the button bar 3 shown at the right in FIG. I.
  • the rearmost endin FIG. 1 the topmost end-of each button bar 3 is mechanically connected with a tuning device 9, which may form part of a television receiver and which serves for turning the receiver in known manner to a predetermined channel by depressing a button bar.
  • the device 9, which may be of known type, does not form part of the present invention and is shown in a block diagram for the sake of simplicity of the drawing. It
  • variable tuning member may' be of a type in which the variable tuning member is formed by capacitance diodes and it comprises a known locking bolt for holding a button bar in the depressed state until a further button bar is depressed as shown in US. Pat. No. 3,470,753 and indicated as 9 in FIG. 1.
  • each of the button bars 3 is provided not only with the freely rotatable and displaceable button 5 but also, in this order, with a coupling disc 13 having a radial finger 11 (see FIG. 2) and with a sleeve 15 havlng a partly axial and partly slanting groove 17 in its cylindrical surface said sleeve being coaxial to the bar and freely rotatable with respect thereto.
  • the two parts 13 and 15, preferably made of a synthetic resin, are freely rotatable on a thinner portion 3 of the button bar 3 and along with said bar are axially displaceable owing to being enclosed between a collar formed at the beginning of the thinner portion 3 and a loose ring I9, subjected to the spring 7.
  • FIG. 1 shows that the foremost end of each button bar 3 is slidably arranged in the front'part of the frame I, not directly but with the intermediary of the hollow button 5.
  • the rear end of each button 5 is provided with a flange 21, which limits the sliding range of the button in the return (forward) direction and which is provided on the rear side with one or more axially orientated teeth 23.
  • the latter are adapted to cooperate with teeth 25 on the side of the coupling disc 13 facing the button (the front side).
  • the coupling disc 13 is provided with axially orientated teeth '27 having slanting tooth faces, adapted to cooperate with an axial tooth 29 on the sleeve 15.
  • a rail 31 is fastened at right angles to the button bars 3 (see FIG. 2), said rail having pin-shaped extensions 33, which extend radially with respect to the button bars 3.
  • Each of these pins engages (see FIG. I) the partly slanting groove 17 of one of the sleeves 15 so that upon an axial displacement of a button bar 3 the associated sleeve 15 is compelled to perform a rotary movement through a given angle of, for example, 45.
  • the figures illustrate this rotation by the two button bar structures, the right-hand structure being shown in the depressed state.
  • FIG. 2 illustrates the two possible extreme positions of the disc 13 and the sleeve 15 relative to each other.
  • FIG. 2 furthermore shows that the radially projecting finger I] of each of the coupling discs 13 can engage one of a plurality of openings 35 provided at each of the fingers 11 in an actuating slide 37, extending at right angles to the button bars 3 and parallel to the sequence direction of the row of buttons (shown in FIG. 2 partly in a longitudinal sectional view), which slide actuates a wave range switch 39 (see FIG. 1).
  • the latter may be of known structure and is shown only as a block for the sake of simplicity.
  • the slide 37 may be provided with a dial 41, mechanically attached thereto, a portion of which dial appears each time behind a window so as to display a certain wave range.
  • the movement of the actuating slide 37 is governed by the radially projecting finger 11 associated with the depressed pushbutton 5, in this case the right-hand button of the Figure.
  • the slide 37 is exposed to a spring force orien tated to the right (for the sake of clarity the spring is not shown) which spring tends to urge the slide into the initial position I shown (which corresponds to one of the wave ranges). From FIG. 2 it will be apparent that with the relative positions of the disc 13 and the sleeve 15 shown on the righthand side of the Figures this initial position is not varied when the button 5 is depressed.
  • a compression spring 45 of greater force than the counterspring 7 ensures that during the depression of the pushbutton the space between the teeth 23 and 25 is maintained so that during the depression the preselection of the wave range is prevented from being changed by an unintentional simultaneous rotary movement.
  • the spring 45 does not directly affect the disc 13 but engages a ring 47 fixed to the button bar 3 between said two elements 13 and 45.
  • the spring 45 directly bears on the disc 13.
  • the compression spring 45 is enclosed between said ring 47 and a second ring 49, which is in contact with a stop member formed by a collar on the button bar 3.
  • the foremost end of the spring 45 is lifted from said stop member when, starting from the position shown on the right-hand side of FIG. 1 in which the button bar is completely depressed-and in which the button bar is secured against further depression by the abutment of a collar 50 thereon against the frame 1the button 5 is further depressed until the teeth 25 and 23 engage each other, while the spring 45 is compressed.
  • the preselection of the wave range can be changed by turning the button.
  • slightly weaker compression spring 53 ensures that the button 5 is urged via the flange 21 in the nondepressed state against the frame 1 so as to exclude rattling.
  • a particularly effective arrangement is obtained if in known manner the range of displacement of the button 5 which is freely rotatable relative to the button bar 3 (in the return direction towardly) is restricted by teeth 55 on the button-supporting front end of the bar 3 (in FIG. 1 it is shown in broken lines), which toothing, when the depressed button 5 is released, engages under the action of the spring 53, teeth 57 in the button 5. This engagement is not yet established in the situation illustrated on the right-hand side of FIG.
  • FIG. 1 shows an alternate embodiment for tuning within a predetermined wave range, by merely rotating the exposed end of bar 3, regardless of the operation of the other components of the pushbutton set. The remote end of bar 3 engages the tuning device 9 shown in FIG. 1.
  • buttons 23 and 25 are simultaneously depressed by the active finger and it is thus practically not possible for the teeth 23 and 25 to engage each other during the depression, even when the spring 45 is absent.
  • said spring may therefore be dispensed with.
  • a pushbutton set for cooperation with a wave range switch for preselection and selection of wave ranges in devices such as radio and television receivers, the pushbutton set including a frame, and at least one pushbutton subassembly which comprises,
  • a push-bar having first and remote opposite ends and being axially movable between initial and final positions, and means for releasably holding each bar in said final position
  • a coupling member rotatable but axially positioned on the bar, the member having (i) a second connection element facing the buttons first element, (ii) a third connection element facing opposite the second element, and (iii) a generally radial-extending finger,
  • a cylindrical sleeve rotatable between initial and first rotary positions, but axially positioned on the bar, the sleeve having a fourth connection element releasably engageable with said third element, the sleeve also having a cam element which extends generally angularly with respect to the sleeve's longitudinal axis,
  • first spring means urging the first and second connection elements of the pushbutton and coupling member to remain axially separated
  • second spring means weaker than the first urging said third and fourth connection elements to remain engaged, whereby 1. initial axial movement of the push-bar driven by the pushbutton compresses only the first spring means, and drives the first spring means, the coupling member and the sleeve axially, with the sleeve being rotated from said initial position to the first rotary position due to the fixed pin engaging the sleeves cam, and the coupling member engaged to the sleeve by said third and fourth connection elements being correspondingly rotated, and the couplings finger then driving the wavelength switch to a first position, the bar being releasably held in said depressed position by said means for holding same,
  • the pushbutton being further axially movable to its final position to compress the second spring means thus engaging the first and second connection elements of the pushbutton and coupling member, the button and coupling being then rotatable together to vary the relative positions of the coupling and sleeve and accordingly change the releasable engagement of their third and fourth connection elements, whereby subsequent initial axial movement of the pushbutton and rotation of the sleeve due to the cam, would rotate the sleeve and engaged coupling to a second rotary position and thus move said coupling finger and wave range switch to a second position.
  • a pushbutton set according to claim 1 wherein there are a plurality of different relative rotary positions of the sleeve and coupling member as determined by the variable engagement of said third and fourth connector elements, whereby after preselection of a particular rotary position by depressing rotating the bar by rotation of said button the bar being engageable to said tuning device for rotating same.

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Structure Of Receivers (AREA)
  • Push-Button Switches (AREA)
US826413A 1968-05-31 1969-05-21 Pushbutton set Expired - Lifetime US3581581A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6807774A NL6807774A (fr) 1968-05-31 1968-05-31

Publications (1)

Publication Number Publication Date
US3581581A true US3581581A (en) 1971-06-01

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ID=19803803

Family Applications (1)

Application Number Title Priority Date Filing Date
US826413A Expired - Lifetime US3581581A (en) 1968-05-31 1969-05-21 Pushbutton set

Country Status (8)

Country Link
US (1) US3581581A (fr)
AT (1) AT286363B (fr)
BE (1) BE733809A (fr)
ES (1) ES367843A1 (fr)
FR (1) FR2011880A1 (fr)
GB (1) GB1237496A (fr)
NL (1) NL6807774A (fr)
SE (1) SE340473B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070000625A1 (en) * 2005-06-29 2007-01-04 Bos Gmbh & Co. Kg Window shade for motor vehicles with positive end stop on the actuating element

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3487702A (en) * 1962-09-22 1970-01-06 Telefunken Patent Tuner mechanism

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3487702A (en) * 1962-09-22 1970-01-06 Telefunken Patent Tuner mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070000625A1 (en) * 2005-06-29 2007-01-04 Bos Gmbh & Co. Kg Window shade for motor vehicles with positive end stop on the actuating element

Also Published As

Publication number Publication date
ES367843A1 (es) 1971-04-16
NL6807774A (fr) 1969-12-02
AT286363B (de) 1970-12-10
BE733809A (fr) 1969-12-01
DE1924042B2 (de) 1976-02-26
GB1237496A (en) 1971-06-30
DE1924042A1 (de) 1970-02-12
SE340473B (fr) 1971-11-22
FR2011880A1 (fr) 1970-03-13

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