Classifications

• • G—PHYSICS
  • G10—MUSICAL INSTRUMENTS; ACOUSTICS
  • G10F—AUTOMATIC MUSICAL INSTRUMENTS
  • G10F1/00—Automatic musical instruments
  • G10F1/06—Musical boxes with plucked teeth, blades, or the like

Definitions

• the present invention relates to a movement comprising a roller carrying radial pins intended to vibrate the blades of a musical keyboard mounted on a support secured to a turntable, a mechanism for driving this roller, a finishing to regulate the roller speed and a trigger arranged to ensure a controlled stop of the movement.
• the trigger may be constituted either by a sliding rod passing through the plate and cooperating with a return spring, the assembly being fixed directly by means of the head of one of the fixing screws of the musical keyboard, or a pivoting part, directly mounted under the head of one of said screws.
• These elements are arranged to be moved from a rest position, in which they are outside the trajectory of the finishing fin, into a working position in which they are interposed on the trajectory of this fin, in order to stop movement.
• the present invention proposes to overcome this drawback by realizing a trigger which can if necessary be mounted automatically, in particular by the fact that it can be installed independently of the other components of the movement.
• the movement according to the invention is characterized in that said detent includes support means provided with rapid assembly, by forced interlocking or by elastic hooking, to at least one fixed element secured to the plate.
• said support means comprise a bracket
• said quick mounting members comprise a base whose shape and dimensions correspond to a housing formed in said support of the musical keyboard, so that the forced nesting of said base in said housing provides a rigid coupling by friction of said support means and said support.
• said trigger comprises a rod in the form of a crank articulated on the bracket and said rod comprises an end arranged to interfere with the path of a finning fin.
• the mechanism comprises a pivoting lever having one end arranged to engage in an opening formed near the periphery of a lateral flange of the roller.
• said support means comprise a profiled element
• said quick mounting members comprise two lateral flanges arranged to fit respecti ⁇ vely under bearing surfaces formed in the heads of the fixing screws of the musical keyboard.
• said trigger comprises a rod in the form of an articulated crank mounted on said profiled element or comprises a pivoting and sliding lever as well as a return spring, one end of which is linked to said pivoting lever and the other end of which is linked said profiled element.
• said pivoting lever When said pivoting lever is sliding, it is carried by a support integral with the plate and carrying a pin passing through an oblong opening formed in said lever.
• said support means may comprise a spring element, one end of which is arranged to couple by elastic hooking under the bearing surfaces provided in the heads of the fixing screws of the musical keyboard, the other end of said spring element being arranged for s '' interpose directly on the path of a finning fin.
• the other end of said spring element can be arranged to carry a sliding counterweight designed to intervene directly on the trajectory of a fin fin or to guide an axially mobile rod designed to intervene directly on the trajectory of a fin of said finishing.
• Said rod can be linked to said end which assumes a return spring function.
• said support means comprise a profiled element consisting of a base plate and a trigger support stud, this base plate having a notch arranged to engage in a range of a fixing screw of the musical keyboard and a pin arranged to engage in an opening of the plate.
• Said support stud may include means for placing various detents.
• FIG. 1 represents a perspective view of the movement according to the invention illustrating a first embodiment of the trigger
• FIG. 2 represents a perspective view of the movement according to the invention illustrating a second embodiment of the trigger
• FIG. 3 represents the preassembled plate of the movement according to the invention before the installation of the bracket carrying the detents according to FIGS. 1 and 2
• FIG. 4 represents a sectional view of the bracket used in the embodiment of FIG. 1,
• FIGS. 5 to 9 show different embodiments of a detent for a movement according to the invention.
• Figure 10 partially illustrates an alternative embodiment which combines certain constructive elements from the embodiments described above.
• the movement 10 for a music box comprises in a manner known per se, a plate 11 on which are mounted the drive mechanism 12 arranged to drive the roller 13 equipped pins 14 intended to vibrate the blades 15 of a musical keyboard 16, the finishing 17 and the trigger 18.
• Figures 1 and 2 show two embodiments of the trigger 18.
• Figure 3 allows to understand the mounting method of this trigger.
• the trigger is carried by support means comprising a bracket 19 having at its base a base which is fitted into a housing 20 formed in the plate, and more exactly in a lateral face of a support 21 secured to this turntable and on which the musical keyboard 16 is mounted.
• the trigger itself consists of a rod 22 in the form of a crank articulated on two claws 23, 24 connected with the stem 19
• An end section 25 is arranged to be interposed on the path of a fin 26 when the other end section 27 of the rod 22 is in the position shown in the figure.
• this rod is raised in the direction of arrow A, its intermediate section 28 pivots and the end section 25 rocks down and releases the fin 26, so that the mechanism can drive the roller.
• the trigger essentially comprises a lever 30 pivoting on a vertical axis 31 mounted on a plate 32 carried by the bracket 19, or by an extension of this bracket.
• the lever is arranged to engage in an opening 33 formed in a lateral flange 34 of the roller 13, or a drive wheel of this roller in the vicinity of its periphery. In this position, the mechanism is stopped. A pivoting of the lever releases this mechanism.
• FIG. 4 shows the bracket 19 carrying the two claws 23 and 24 corresponding to the embodiment according to FIG. 1.
• FIG. 5 represents another construction in which the trigger comprises a pivoting and sliding lever 40 which is carried by a support 41 secured to the plate 11. It is fixed to this support by a pin 42 preferably driven out which passes through an oblong opening 43 formed in said lever and which is provided with a head ensuring the holding in place of the lever, this head having a diameter greater than the width of the oblong slot.
• This lever ends with a hook arranged to engage in an opening 33 formed at the periphery of a lateral flange 34 or zone for driving the roller 13.
• the musical keyboard 16 is fixed on the support 21 by means of two screws 44 and 45, the heads of which have a bearing surface 44a and 45a respectively, that is to say a peripheral clearance provided at the bottom of these heads. These clearances are used to fix a profiled element 46 provided with two lateral flanges 47 and 48 which are forcibly fitted into the two bearing surfaces 44a and 45a.
• the profiled element 46 serves as a means of fixing a return spring 49 fixed by one end to this element and by its other end to the lever.
• the lever is pushed in the direction of arrow A until the hook engages in the opening 33.
• the roller stops and, simultaneously, the tilting of the lever around of the pin 42 causes the rotation of the fin to stop.
• FIG. 6 shows another embodiment in which the heads of the fixing screws 50 of the musical keyboard 16 have a bearing 51.
• This function has the function of ensuring the fixing of a profiled element 52 constituting the support means of the trigger and carrying the rod 22 which is identical, at least from a functional point of view, to that represented by FIG. 1.
• the element 52 comprises lateral flanges 52a, 52b which is fixed in plan by means of the bearing surfaces 51 of the two screws 50 which define a groove for holding this base.
• On the enlarged base are arranged two flanges, soli ⁇ daries of the base, which are crossed by the rod 22.
• a return spring is carried by the rod section 22 located between the two flanges which hold it.
• the screws assume two distinct functions, a first function which consists in fixing the musical keyboard 16 and a second function which consists in fixing the element 52 carrying the rod 22. These two functions are independent, they that is to say that the musical keyboard can be permanently mounted before the installation of the element 52.
• This element replaces the bracket 19 of FIG. 1, which makes it possible to improve the aesthetic appearance of the movement and its size.
• the element 52 is preferably made of synthetic material and its fixing is done by simple fitting of its enlarged base in the groove defined by the bearing surfaces 51.
• the screw heads serve as vertical stops for the element 52 and the bearing surfaces 51 of side stops.
• FIG. 7 shows another embodiment of a detent for a movement according to the invention.
• This trigger comprises in this case two screws 44 and 45 identical to those shown in FIG. 5, for fixing the musical keyboard 16.
• the ranges 44a and 45a are arranged to fix a spring element 60 of which one end 60a is fixed by hooking elastic to these screws by engaging in the clearances corresponding to these ranges, and the other end 60b of which passes through an opening 61 formed in a rod 62 movable along an axis perpendicular to the plate.
• the spring element 60 acts on this movable rod as a return spring. In a low position, the rod and / or the end of the spring element 60 do not interfere with the fin of the finish so that the movement can rotate freely. In a high position, the fin abuts against the rod and / or the end of the spring element 60 so that the movement is stopped.
• the spring element 60 biases the rod towards its low position.
• FIG. 8 represents a variant in which the shape of the spring element 60, as well as its function, are different from those defined above.
• the element has one end 60a fixed by elastic hooking to the bearing surfaces 44a and 45a of the screws 44 and 45-
• the other end 60b is arranged to guide an axially movable rod 70 and designed to intervene directly on the path of the finishing fin.
• This end can also have a function of return spring of the rod 70.
• the latter passes through an opening 71 of an angled part 72 secured to a support 73 mounted on the plate 11.
• FIG. 9 shows another embodiment in which the spring element 60 has, as before, an end 60a fixed by elastic hooking to the surfaces 44a and 45a of the screws 44 and
• the other end 60b is arranged to carry a movable counterweight 80 which can move between two positions. In the first position, the counterweight does not interfere with the trajectory of the finishing fin. In the second position, this weight blocks the fin and stops the movement. The movement of the counterweight between the two positions is done by tilting the movement in one direction or the other.
• Figure 10 shows a particular embodiment of said support means.
• These support means comprise a profiled element 90 consisting of a base plate 91 and a support stud
• the plate base carries a pin 93 which is intended to engage in an orifice formed in the plate. It also includes a notch 94- intended to engage in the scope of one of the screws, which is in fact the scope 44a of the screw 44 in Figures 7 to 9-
• the trigger support stud is provided with various means for reassembling the trigger itself.
• a through opening 95 allows for example the establishment of a rod 70 (see Figure 8).

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• Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Acoustics & Sound (AREA)
• Multimedia (AREA)
• Electrophonic Musical Instruments (AREA)
• Toys (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9447322

Family Applications (1)

Country Status (3)

Cited By (1)

Citations (5)

• 1993
  • 1993-05-17 FR FR9306090A patent/FR2705485A1/fr active Pending
• 1994
  • 1994-05-05 WO PCT/CH1994/000084 patent/WO1994027281A1/fr unknown
  • 1994-05-11 IT ITMI940940A patent/IT1269754B/it active IP Right Grant

Patent Citations (5)

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