DE1591141A1 - Dual band voting unit - Google Patents

Description

GENERAL INSTRUMENT CORPORATION, Newark, New Jersey, USA.

Dual band voting unit

The present invention relates to a push button voting unit for tuning in a plurality of bands with each of the pushbuttons under operator actuation is effective to select a particular station in each of the bands in question.

Push button voting units are commonly used. In such voting units there are a large number of manually operable ones Actuators or "pushbuttons" are provided, each of which is individually between a rest and a working position is movable. If a certain limb is moved into the working position, then one that is guided by it brings Adjustment member the tuning elements according to a desired frequency to be received in a certain position. The adjusting members have cams whose position is adjusted relative to the adjusting members assigned to them can be used to customize the respective pushbutton for tuning a particular frequency. These cams become selective adapted so that they engage a moving part of the tuning unit, such as a rocker or something similar and this part according to the position of the cam

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adjust relative to the actuator and thereby a bring about the desired change in the state of the tuning device. Usually each pushbutton works so that it only selects a single frequency to be tuned. This is the number of stations that work with a particular arrangement can be selected from common pushbuttons, usually equal to the number of pushbuttons provided.

Often there is a need to tune a greater number of stations than the number of pushbuttons that are can be expediently provided or used. This problem arises particularly in connection with systems for tuning in a variety of bands, such as radio and shortwave, AM and PM, or VHP and UHP. The for The number of pushbuttons available may be for reasons of space, weight or the desired simplicity station selection be limited; in the case of multi-band tuning, it is particularly desirable that the number of Push buttons intended for manual operation are smaller than the total number of stations to be coordinated, otherwise the user of the facility will find himself in the selection of the correct pushbutton for the desired station in the desired band could be wrong. It is also available in multi-band voting units very often the case that different voting. elements for different tapes are used and thereby between one band and another. Changes in the internal

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require switching of the voting unit. This requires the switching of connections within the voting unit, and one must consequently switch over with the selection of a specific push-button corresponding to the desired band coordinate.

A solution to this problem proposed in the past is to provide each push button or actuator with a number of adjustment members and to provide means to make one or the other of these setting members effective when the push button is operated, depending on the particular station or band to be tuned. Arrangements of this however, the types proposed in the past suffered either from excessive complexity or shortage accuracy of operation or both.

It is therefore an object of the present invention to provide a push button tuner in which each actuator a number of setting members is assigned and in which the actuating member is dependent on the station or the band to be tuned, optionally mechanically is coupled to one or the other of these adjusting members. It is another object of the present Invention to provide such a unit in which the coupling of the actuators with a certain of their

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associated adjusting members is effected by the operation of the operator with simple means, and in which the Coupling of each pushbutton or actuator to its associated cam or adjuster under all operating conditions is reliably maintained. It is another object of the present invention to provide a unit of to create the type described, in which for the optional coupling of the push button with one or the other of the Adjustment members used structure is simple, reliable and easy to use in the overall structure.

According to the above, each push button is associated with an actuating member which is arranged so that it is between a Work and a rest position can be moved. On each side of this actuator is a movable adjustment member provided, each of which has an adjustable cam which is intended to engage the tuning element and tune it in the desired position. A coupling member is arranged on the actuating member, which is shown in FIG is able to occupy two working positions and the actuator mechanically to couple with either one or the other of the adjusting members. The coupling link has an adjustment part which is used to be moved to the coupling member in one or the other of its working positions bring to. The adjustment parts of all coupling links are with

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a displacement device in engagement, the engagement so. is that if the displacement device of the one their working positions is moved into the other, each coupling link is pushed from one of its working positions to the other will. The displacement device consequently simultaneously couples all of the actuating members to one or the other of their associated adjusting members. The engagement between the coupling member and the displacement device is still so that there is a physical coupling between them throughout the movement of the actuators and the mechanical therewith coupled adjusting elements persists at any moment between the working and resting positions. In this way becomes the accidental disengagement of a particular actuator effectively prevented with a specific adjusting member assigned to it. The setting of the coupling link in one or the other of his working positions is still secured by providing a resilient detent on him.

In order to facilitate assembly, actuation and repair, the coupling element is on its associated actuation element in the immediate vicinity of the pushbutton attached to it arranged, wherein the resilient detent acting on the coupling member is preferably carried by this push button. at a preferred embodiment of the pushbutton form that Coupling link and the locking device a single assembly,

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which can be attached as a whole to and separated from the actuator.

It is to the accomplishment of the above, and in view of other objects that emerge herein, that the present invention is directed to the construction of a push button voting unit as characterized in the claims and in the description is explained in conjunction with the accompanying drawings in which:

Figure 1 is a plan view of an embodiment of the present Invention for multiband tuning;

FIG. 2 is a partial view of the front part of the tuning unit of FIG. 1, but with the displacement device in FIG shows another working position;

Figure 3 is an end view taken along line 3-3 of Figure 1;

K view of certain parts of the unit; Figure 4 is an exploded perspective J>

Figures 5 and 6 are sectional views along lines 5-5 and 6-6

of Figures 1 and 2 respectively;

Figures 7 and 8 are sectional views taken along lines 7-7 and 8-8 of Figure 1;

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Figure 9 is a sectional view taken along line 9-9 of Figure 1 and

Figure 10 is a partial illustration showing another embodiment the means for attaching the coupling member to the actuator shows.

Although the present invention is specifically used herein in connection with a tuning unit for tuning in a variety of Ribbons and specials for optional voting either in an AM tape or an FM tape « it should be clear «that the applicability of the invention does not apply to it is limited, but also to vote in others Ribbons or to coordinate a large number of stations in a single bundle (e.g. around the To allow use of five push buttons to tune ten stations in the same band). Although the invention here specifically bit the terms of a "pushbutton" voting unit it should also be understood that this term is used in the general sense, and that the invention is applicable for use in voting units in which actuators are intended to be moved regardless of whether the movement is made by pushing or pulling and whether this movement is in a straight line, as specifically shown here, or in any other manner such as rotating, pivoting, etc.

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The drawings show a voting unit that has one with 2 has designated frame on which a plurality of adjustable tuning elements is arranged. As shown here is, these tuning elements comprise two sets of tunable coils, one set 4 of these coils for the Reception in one band, e.g. for FM reception, and the other set 6 of these coils for tuning in another band, e.g. used for AM reception. The coils 4 can be in conventionally by displaceable cores 8 and the coils 6 in a corresponding manner by displaceable cores 10 be matched. The cores 8 and 10 are connected by rods 12 to a bracket 14, which on the reels to and from is movable away from them. A linkage formed by the lever 16 and the arm 18 actuates a display device 20 which used in conjunction with a scale on the voting unit work together and thus display the tuned frequency. The lever 16 is rotatable at 22 on the Mounted frame 2, one end 24 of the same is rotatably and displaceably guided in a slot 26 in the member 14 and the the other arm thereof is rotatably connected at 28 to the arm 18, and the end 30 of the arm 18 is rotatable and slidable guided in a groove 32 in the frame 2. The link 14 moves in a straight line and is supported by connecting parts 24 connected with arms 36 extending on opposite sides of the frame 2 extend upwards from a rocker, which is denoted by 3 δ and rotatably mounted in the frame 2 at 40.

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is (see Figure 4). The rocker 38 has an upper one and one lower rod 42. It is common for the position of link 14 to determine the amount by which cores 8 and 10 spring into their own Immerse coils 4 and 6; and this in turn affects the magnitude of the inductance of the latter and is true it from so that the entire tuning circuit assumes a certain reception frequency or a communication channel.

It was mentioned that the coil 4 for use in the FM tuning and the coil 6 for use in AM tuning can be trained. At any given time, however, only one type of vote is effected at a time, the particular type being determined by which of the coils 4 or 6 are connected to the tuning circuit. This is controlled by the switch 44, which is mounted on the frame 2 and which can be moved from left to right Knob 46 is provided, as seen in the drawings, to set the tuning unit for PM or AM tuning.

The rocker JQ with its upper and lower rod 42, together with its connection to the link 14, is considered to be a relatively conventional tuning device intended to be actuated by known types of push button systems. The rotation of the rocker 36 controls the position

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of the member 14 and thus the coordination of the coils 4 and 6.

The push button assembly of the present invention has a plurality of actuating members designated 48 (here five are seen), which are arranged laterally transversely to the front of the frame 2 and in the frame 2 for a rectilinear Movement are guided. As perhaps best seen in Figures 4, 7 and 8, each of these actuators is made up 48 from a metal plate, which has an elongated rearwardly projecting narrow nose 50 and an elongated one has forwardly protruding narrow nose 52, the the latter has wood hoes 54 at its end and between the nose parts 50 and 52 a main part 56 is provided. The rearwardly protruding nose part 50 is in an opening 58 slidably guided, which is formed in the rear frame plate 60. The main part 56 is displaceable in a slot 62 out, which forms part of a wide opening 65 in the front frame plate 64.

Each actuating member 48 is thus displaceable in the frame between a front rest position and a rear working position stored. (When the term "front" is used here, it refers to a direction shown in FIG pointing downward and the term "rearward" refers to a direction pointing upward in FIG. This co-. future was chosen for the sake of simplicity and consistency. )

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Two designated 66 and 68 Einetellglieder are on the both sides of the actuator 46 are provided. Each adjustment member has a main portion 70 with one to the rear protruding narrow nose part 72, which is slidably guided in an opening 74 in the rear frame plate 60, and the main part 70 is slidably guided in a slot 76 in the opening 65 in the front frame plate 64 is formed. Springs 78 are located on the nose parts 72 and are clamped between the rear frame plate 60 and the main parts 70. The adjusting members 66 and 68 are thus slidable between front rest positions and rear working positions and are resiliently in their by the springs 78 front rest position pressed.

Each of the adjusting members 66 and 68 carries a cam 80 which can be adjusted in its position by rotating about the axis 82 and serves, when the adjusting member 70 is moved backwards into its working position, to engage the rods 42 of the rocker 58 and the latter in as ^he pushbutton Abstimraeinheiten is to turn their situation common in the art. 4 A typical push-button tuner, provided with the two adjustment members 66 and 68 and the cams 80 carried by them, has a crank arm 84 extending upwardly from the body 70, a cam lock lever 86 and disposed on the arm 84 an extension member 88 which is slidably mounted in the main part 70

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and has a raised portion 90 which is movable into engagement with the cam lock lever 86 so that the latter engages the cam 80 and holds it in place. This type of construction of a push button voting unit is disclosed and described in greater detail in parent patent USA 2996925 dated August 22, 1961, which is assigned to the assignee of the present application. Each of the extension parts 88 is provided at its upper edge with a notch 92 which serves to engage the forwardly projecting nose part 52 of the associated actuator 48 when both the actuator 48 and the adjustment member 66 or 68 are in their front, ie Rest position.

The forward protruding nose portions 52 of the actuators 48 carry 54 pushbuttons on the barbed parts 9 ^ ·

Coupling links 96, designated 96, are on each of the actuators 48 attached, preferably on the forwardly protruding nose parts 52 thereof. As in the figures 1-9, each of the pushbuttons 94 is marked with an after provided rearwardly protruding sleeve part 98, to which the coupling member 96 is attached directly. This link has one Main part 100 with two arms 102 and 104 protruding towards opposite sides and one adjusting arm protruding upwards or part I06. The lower end of the main part 100 is with

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an opening 108 which is designed so that it fits over the key portion 98 and allows the coupling member 96 to pivot between the left and right positions in which its arms 102 and 104, respectively, protrude laterally from the key coupling member . The arms 102 and 104, in conjunction with the shape of the opening I08, are designed and dimensioned such that when the coupling link 96 is in its right-hand position, as can be seen in FIG right adjuster 66 engages while arm 104 is removed from notch 92 in left adjuster 68. When the coupling member 96 is in its left position, as can be seen in Figure 6, the relationship between the arms 102, 104 and the notches 92 in the adjustment members 66 and 68 is reversed. From this it can be seen that when the coupling member 96 is in its right position, the actuator 48 is physically connected to the adjustment member 66 and physically separated from the adjustment member 68, and that when the coupling member 96 is in its left position, the actuator 48 is is connected to the adjusting member 68 and separated from the adjusting member 66 .

To support the coupling member 96 when reaching and staying in one or the other of its working positions, such as As they have been described, the lower surface thereof is provided with a protrusion 110 and a detent spring 112 acts thereon. This locking spring 112 is attached to the button 94,

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is carried by it and extends backwards from it. As FIGS. 5 and 6 clearly show, this has the effect Cooperation of spring 112 and projection 110 a dead center effect, which holds the coupling member 96 in a given working position, but still allows it to be manually in his move to another working position if desired.

The coupling members 96 on all the actuating members 48 are simultaneously moved from one working position to the other by a displacement device 114 which is fastened to the frame 2 for lateral movement. The displacement device 114 consists of a forwardly projecting plate 116 which is provided with a plurality of elongated slots 118, one for each actuating member 48 and its associated coupling member. The upwardly projecting adjustment arms or parts 106 of the coupling members 96 are correspondingly received by the slots 118 in all positions of the actuating members 48, for which the slots 118 are elongated in a suitable manner. Thus, when the shifter 114 is moved rightward # all coupling members pivoted (as shown in Figures 1, 3 and 5) 96 to the right and thereby couple their respective actuators 48 with their right positioning members 66 _S, and if a print key is pressed 94, thus cause their actuator 48 to be moved to the working position. The right adjusting member 66 is also moved backwards into its working position.

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moved against the action of the spring 78, the cam carried by it engages the rods 42 of the rocker 38 and rotates the latter in order to carry out a desired tuning. During the movement of the actuating member 48 and the right adjusting member 66 from the rest to the working position, the upwardly projecting adjusting member or part I06 of the coupling member 96 slides in its slot 118 in the plate 116 of the sliding device 114. The sliding device 114 thus ensures that that the mechanical operative connection between the actuating member 48 and the right adjusting member 66 is maintained. When the displacement device 114 is moved to the left (as in FIGS. 2 and 6), the coupling members 96 are pivoted to the left and the respective upwardly projecting arm I06 remains in its slot U8 in the plate 116 of the displacement device 114 as before.

The displacement device 114 also has one upwardly extending arm 120, which has a recess 122, In which the switch button 46 is added. In this way Controls the setting of the displacement device 114 in the "one working position" or the other, not just the mechanical one Coupling of the actuating members 48 to one or the other of the adjusting members 66, 68 assigned to them, but rather also operates the switch 44, which determines the band to be tuned or the type of vote to be effected.

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It should be understood that the adjustment of the position of the cam 80 on each of the adjusting members 66, 68 can be effected in a conventional manner because the coupling member 96 engages the extension 88 and thus directly mechanically couples the pushbutton 94 therewith in a manner that which is functionally comparable to that of the prior art.

Thus, the cams 80 on the right adjusting members can be adjusted to adjust selected stations in a particular band, while the cams 80 of the left adjusting members 68 can be adjusted to adjust selected stations in a different band. The same rocker 38 simultaneously sets the movable tuning cores 8 and 10 for the coils 4 and 6 of the two belts in question, and the switch 44 selects which of the coil sets 4 or 6 is effective at a particular time. When the switch 44 is set by the movement of the slide device 114, the push-button mechanism is automatically operated so that it activates those setting members 66 or 68 which correspond to the band which has been selected. As long as the displacement device 114 remains in a position corresponding to a particular band, the correct setting member 66 or 68 is made effective, regardless of whether the actuating members 48 are in their working or rest positions or in any intermediate position.

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The device 96, which serves to selectively mechanically couple the actuating members 48 to the adjusting members 66, 68, is attached in a very simple manner to the actuating member 48, and repairs or replacements can be carried out simply by removing the corresponding pushbutton 9 ^ without that the actuating member 48 or one of its associated adjustment members 66, 68 must be removed from the frame 2. Indeed, in the preferred embodiment illustrated in Figures 1-9, this removal and replacement is accomplished simply by removing one subassembly consisting of pushbutton 94, coupling member 96 and spring 112 and replacing it with another. In another construction, shown in Figure 10, the coupling member 96 is seated on a lug 124 bearing which is slidably seated on the forwardly projecting nose portion 52 of the actuator 48 and which is appropriately in position opposite the main portion 56 is held, such as by being secured in place and / or held in place by the pushbutton 94 which carries the spring 112. In this last-described embodiment, the coupling member 96 is not combined with the pushbutton in a preassembled unit, as in the previously described embodiment, but the ease and convenience with which the coupling member 96 is mounted is removed and removed from the actuating member 48.

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can be changed, has nevertheless been retained.

Thus, the structure described here is simple, inexpensive and reliable, and results in flexibility in the tuning operation coupled with an accuracy and reliability that has not previously been achieved.

Even if only a single embodiment of the present Invention has been described in more detail, it should nonetheless be understood that many modifications can be made to the specific Details thereof can be made without departing from the scope of the immediate invention as shown in the following Claims is characterized to leave.

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Claims (7)

Claims 1.) Push button voting unit with a frame, two sets attached tuning devices and movable tuning elements, a device for selecting a particular one Abstinuneinriohtung for the operation, and a facility for Setting the tuned! Ie according to the selected voting device, characterized by a number of actuators (48), which are in the frame (2) optionally by hand can be moved between rest and work positions, two movable adjustment members (66, · 68), each one of the Actuators are operatively assigned and normally separated from this, normally assume a rest position and can be moved into a working position in order to work on the device (56, 42) for adjusting the tuning parts (8, 10) to attack and to actuate these, each a coupling member (96), which is each carried by an actuating member and on this is rotatably attached to be moved between a first and a second working position and with the one or to come into operative connection with the other of the adjusting members and to couple this with the actuating member and thus to move between the working and rest position of the latter by an adjustment part (I06) on the coupling link and a displacement device (114) on the frame (2) which is in engagement with the adjustment parts of the coupling elements and is movable by hand to cause the Koppe1- 009839/0425 _x 1591H1 »Ο Move members between a first and a second working position, the adjustment parts of the coupling members with the Slider stay engaged when the actuators move between resting and working positions. 2.) voting unit according to claim 1, characterized by a spring arrangement (110, 112) which acts on the coupling member and causes this in one or the other his work situation is maintained. 3.) voting unit according to claim 1 or 2, characterized in that that each of the actuators is provided with an attached manually operable button (94) and the coupling links are arranged on their respective actuators in the vicinity of the pushbuttons. 4.) voting unit according to claim 1 or 2, characterized in that that each of the actuating members is provided with an attached manually operable button (94) and the coupling members are attached to the keys corresponding to their associated operating members. 5.) voting unit according to claim 2, characterized in that each of the actuating members is provided with a hand-actuated key (94) attached thereto, that the Koppe! Members ar their corresponding actuating members in 009839/0425 _BAD 1591U1 -> - placed near the buttons and the. Peder arrangements with buttons are connected. 6.) voting unit according to claim 2, characterized in that that each of the actuating members is provided with an attached manually operable button (94) and the coupling members and the spring assemblies are attached to the keys in correspondence with their associated actuators. 7.) voting unit according to one of claims 1 to 6, characterized characterized in that the displacement device has a number of in the direction of movement of the actuating members elongated recesses (118) is provided that the adjustment parts the coupling members carried by the actuators are received in the recesses accordingly to to establish the engagement between the coupling members and the displacement device, and that the adjustment parts move along these recesses when the actuators are moved between the working and resting positions. BATH ORIGINAL 009839 / 0A25