Embodiment
Fig. 1 represents the general structure of performance parts unit.By the 1st support 2 and the 2nd support 12 will turn round drum 3 pivotally axle be bearing on the framework 1, and oscillating plate 4 usefulness screws are fixed into the state that the sound pin is played that hits of the side face that can be embedded in revolution drum 3.At axle support 2 places, bearing 33 fastens slidably with the hole that forms in the end plate 3a of revolution drum and is secured in a press freely by riveted joint revolution drum 3 is supported.
On the other hand, with the axle 34 formation specified lengths (for example 4-6mm) of the end plate 3b one of turning round drum 3, its front end quilt axle with freely rotating is bearing in from the 2nd support 12 of framework 1 protrusion.
Be formed with gear wheel in large diameter 31 on the end plate 3b of revolution drum 3.Shown in Fig. 1 b, form the ratchet holding section 31a that the assortment along the circumferential direction that engages with the pawl of defined such as ratchet has a plurality of teeth at the end face of this gear wheel in large diameter 31.This ratchet holding section 31a can take various structures, also can even only use as gear according to the structure of driving body.That is to say that gear wheel in large diameter 31 or ratchet holding section 31a are constituted as to accept the rotary driving force that revolution drum 3 rotates usefulness.
In addition, between the end face of gear wheel in large diameter 31 and above-mentioned axle support 12, form the consistent interval of length with axle 34 with afore mentioned rules length.
In Fig. 1 a, promptly install back on the surface of framework 1 on the face of rotary drum 3 and oscillating plate 4, as with near (downside of figure) of axle support 12 and the oscillating plate 4 of 2 pairs of side positions of axle support, the surface forms the general plane shape and also is set with the driving body installation portion A that driving body is used is installed.On this driving body installation portion A, be formed with screw hole 13,14,15, and use hole 16 with projection 17 with as the cone shape location, recess bottom surface that is embedded in the framework 1 as the cone shape location of front end of protuberance protuberance on the framework 1.Yes that various driving bodies (comprising gear train) are provided with in order to install for these, according to the kind of driving body, shape, structure etc., with above-mentioned screw hole, projection, hole any is used for fixing at least.
In addition, the bearing 33 of revolution drum 3 periphery carve establish groove in because its end face is equipped with stomidium 33a, make its revolution by the stress that instrument is inserted this stomidium 33a and apply axis direction, revolution drum 3 is moved along axis direction, and scalable is pressed because of the installation of axle support 2 and 12 revolution drum 3 axis directions that produce.Therefore needn't compress revolution drum 3 along axis direction by laminated spring 32 as shown in Figure 5, can realize cost degradation by reducing part number in man-hour.
Below have the embodiment of the music box of above-mentioned performance parts unit by Fig. 2, Fig. 3 and Fig. 4 explanation.
Figure 2 shows that the situation of electro-motor being installed and constituting the music box of motor driven on above-mentioned performance parts unit.On the driving body installation portion A of framework 1, installing plate 5 is mounted on screw hole 13,14 by fixed screw 56,57.This installing plate 5 is that block of metal plate pressure processing is shaped and has top bending in Fig. 2 b and the erection part 52,53,54,55 that forms.Form one side in the upper end of erection part 54 and prolong to the right, one side is opened the tilt guides 54a that shape tilts laterally.
Erection part 52 tightens an end of intrinsic electro-motor 6, the outside terminal 72,73 of electro-motor 6 when running through the distributing board 71 that is fastened on the erection part 52 with distributing board 71 on the electrode figure that forms conduct electricity and be connected.Be bearing in worm shaft 61 engagements on an end the 2nd gear 62a that forms and the output shaft that is fastened to electro-motor 6 of the 1st gear shaft 62 on the erection part 53 and 54 of installing plate 5 by axle.Another axle head the 3rd gear 62b that forms and the 4th gear 63a engagement that on the 2nd gear shaft 63 of the erection part 53 that is bearing in installing plate by axle and 55, forms at the 1st gear shaft 62.The 5th gear 63b that forms at the axial region of the 2nd gear shaft 63 then with above-mentioned gear wheel in large diameter 31 engagements.
As seen from Figure 2, in the present embodiment, because can be being fixed on the driving body installation portion A that electro-motor 6 on the installing plate 5 and drive gear mechanism 61,62,63 refill the performance parts unit subsequently, so can carry out independent assembling to the performance parts unit; Manage keeping owing to can be used as the unit, even in multimachine kind produced in small quantities line, also can simplify manufacturing process.
In addition, because and the end face of the gear wheel in large diameter 31 of end plate 3b one and axle support 12 between be provided with the interval, become possibility as setting other gear (the 4th gear 63a) near Fig. 2 gear wheel in large diameter that a is shown in 31, when increasing the gear mechanism design freedom, also can reduce the volume of transfer gear train, the miniaturization of realizing music box is had very big effect.
Also have, in the past in the assembling work of drive gear mechanism, install because the 5th gear 63b system is last, the counter-rotating of the revolution drum 3 that produces because of the engagement changing of the relative positions with gear wheel in large diameter 31, so tend to take place oscillating plate because of producing the unnecessary problem that causes damage that contacts with the sound pin that hits that turns round on rousing, as adopt present embodiment, then by after the 2nd gear shaft 63 is installed, the 1st gear shaft 62 that extends from the output shaft side direction performance parts cell side of electro-motor 6 is installed from the top at last, make itself and the 4th gear 63a aligned engagement, finally make itself and worm shaft 61 engagements and can avoid the problems referred to above.
In this case, because the erection part 54 at installing plate 5 forms the tilt guides 54a that expands shape bending formation laterally, the end axis of the 3rd gear 62b side of the 1st gear shaft 62 is bearing on the erection part 53, after making the 3rd gear 62b and the 4th gear 63a engagement earlier, make the end one side of the 2nd gear 62a side of the 1st gear shaft 62 contact with inner face dip plane that one side is pressed into to the inside and the engagement of cooperation and worm shaft 61, can make worm shaft 61 and the 2nd gear 62a be easy to mesh as the tilt guides 54a of guide piece.
In addition, the 1st gear shaft 62 is positioned at other part upside, owing to be to mesh shape from upside to constitute, even have the advantage that particularly under the not good situation of the 3rd gear 62b that accuracy requirement is arranged, also can easily change.And owing to can not need unnecessary labour and engagement easily, the damage of each gear in the time of can preventing the drive gear mechanism assembling during assembling of above-mentioned drive gear mechanism.
As shown in Figure 2, because the output shaft of electro-motor 6 and connected worm shaft 61 and whole drive gear mechanism are configured in the inboard of the left and right side of framework 1, even under the situation about falling in that the music box motion is made a mistake, external force also is difficult to be applied on the gear train, so can reduce breakage.Opposite with the example in the past of Fig. 5, because the output shaft of electro-motor 6 is configured in the side of oscillating plate 4, electro-motor 6 and drive gear mechanism all can be housed in like this in the scope of left and right side of framework.That is to say the distance of the output shaft that can elongate (axle of fastening worm shaft 61) to the gear wheel in large diameter 31 that turns round drum 3 from electro-motor 6.Specifically, owing to can effectively utilize the length space of the left and right directions of oscillating plate 4, can under the situation that does not enlarge music box, dispose transfer gear train.
Figure 3 shows that and crank-like driving shaft 80 is housed and with the structure that manually drives or be suitable for when rotatablely moving as the drive source occasion.Be provided with the clamping part of being installed with freely rotating for driving shaft 80 in the outer end of driving shaft 80, then form at its offside and carve the worm screw axial region 82 that is located on the side face.Driving shaft 80 is bearing in by fixed screw 84,85 by axle with freely rotating and is fixed in the resinous bearing part 83 in the driving body installation portion A of framework 1.
Performance parts unit when assembling and the end face of the gear wheel in large diameter 31 of end plate 3b one and axle support 12 between spools 34 on ratchet gear 86 is installed with freely rotating.Shown in Fig. 3 b, this ratchet gear 86 is provided with the 86a of ratchet portion at it by revolution drum 3 sides, then is provided with gear part 86b at its offside by axle support 12 sides.The worm screw axial region 82 of above-mentioned driving shaft 80 is from top and gear part 86b engagement.The 86a of ratchet portion forms the shape with revolution objectivity and form two claw 86a-1,86a-2 on 180 degree diverse location.This claw 86a-1,86a-2 engage with the ratchet holding section 31a of gear wheel in large diameter 31 respectively.
The ratchet holding section 31a that forms at the end face of above-mentioned gear wheel in large diameter 31 and with it two pawls of the ratchet gear 86 of engaging promptly form so-called ratchet device and work as only transmitting the revolution drum 3 suitable rotating one-way clutchs of direction.In addition, the above-mentioned driving shaft of not representing among the figure 80, ratchet gear 86 and axle support 12 cover fully by the outer edge side of bearing part 83 with framework 1, and further by the top locking of not shown top board with bearing part 83.
Be by making clamping part 81 rotations and make the driving shaft revolution, 3 revolutions of revolution drum being driven in this embodiment through worm screw axial region 82, gear part 86b, the 86a of ratchet portion, ratchet holding section 31a.In this case as making driving shaft 80 reversed turnings, then because the disengaging of the snap-fit relationship of ratchet gear 86 and ratchet holding section 31a, claw 86a-1,86a-2 dally on the 31a of ratchet holding section, so revolution drum 3 can not produce counter-rotating, can prevent to turn round the damage of drum 3 and oscillating plate 4.
Adopt present embodiment,, needn't on the original structure of performance parts unit, what increase by on the axle 34 of the revolution drum 3 that ratchet gear 86 is entrenched in form at certain intervals and can load onto simply and manually drive with driving shaft 80.
Figure 4 shows that the music box that push rod 90 has been installed on above-mentioned performance parts unit.Push rod 90 is to adopt rubber-like metal sheet profiled, comprising by pushing downwards makes push rod produce the operating portion 91 of distortion, be fastened to the joint face 92 on the driving body installation portion A of framework 1 by fixed screw 95,96, from engaging the facial 92 spring leaf portions that make progress upright 93,94.
Spring leaf portion 93 protrudes upward and is the bending of single armed shape from engaging facial 92, and its front end has claw 93a.On the other hand, spring leaf portion 94 protrudes upward and is the bending of single armed shape and is connected with clamping part 91 from engaging facial 92, has claw 94a to revolution drum 3 sides protrusion in the below slightly from lower edge in its way.These claws 93a and 94a engage with the ratchet holding section 31a of gear wheel in large diameter 31 respectively; Be that claw 93a allows (to call the CCW direction in the following text) revolution counterclockwise and stops clockwise direction (to call the CW direction in the following text) revolution, claw 94a to constitute only engaging when transmitting the revolution of CCW direction in Fig. 4 b.
Be described in detail as follows: in case operating portion 91 usefulness manually or by other mechanism are pushed downwards, spring leaf portion 94 i.e. distortion downwards, the claw 94a (ratchet) of front end makes the revolution drum 3 with the engagement of the tooth of ratchet holding section 31a only turn over ratchet holding section 31a to the CCW direction and goes up a tooth that forms, and will turn round drum 3 tooth that above-mentioned claw 93a (hook) becomes up with ratchet holding section 31a goes up formation when finishing feedings at claw 94a and engage fully.In case the power that will be added on the operating portion 91 is removed, then spring leaf portion 94 is upwards replied at this moment, also slippage and (CW direction) answer upward on the 31a of ratchet holding section of claw 94a.This moment, claw 93a engaged securely with ratchet holding section 31a, prevented to turn round drum 3 counter-rotatings (rotating to the CW direction).
Like this, above-mentioned push rod 90 each pressing forces are added in operating portion 91 and make the revolution drum 3 with the engagement of the tooth of ratchet holding section 31a rotate only tooth, just make music box play out a sound.
Even in this embodiment, only need push rod 90 is packed in the performance parts unit of having finished same as before, just can finish the music box that contains driving body simply.Because push rod 90 is lamellar, needs to be provided with the space hardly, even but be thick plate-like, because end plate 3b is abundant with the clearance space of axle support 12, install completely without obstacle, so the push rod of different shape can be installed.
In the above-described embodiments,, can make the engaging of ratchet part same as before, be easy to install actuators such as handle or push rod by ratchet snap-latch surface 31a being arranged on the end face of gear wheel in large diameter 31.In addition, as the syndeton of driving body and performance parts unit, also can be by adopting unidirectional ratchet to constitute with the volute spring of ratchet device same purpose etc., therefore, the end face structure of gear wheel in large diameter 31 can be any snap-in structure that is not limited to the ratchet snap-latch surface.
Be that axle 34 is integrally formed on end plate 3b in the above-described embodiments, but also axle 34 can be fixed on a support 12 sides, Yi Bian and 36 revolutions of the preceding end-to-end plate by axle can not support movably to axle support side 12 freely.
As mentioned above, in the various embodiments described above, owing to take to turn round the structure that drum 3 is completely fixed by axle support 12 being arranged on the framework 1, form as component unit completely only having as the performance parts of the meaning of the part of completed music box in the past, very easy as the use of half-finished performance parts unit.That is to say, owing to general performance parts unit can be applicable to various driving bodies, thus make the multimachine kind launch to become possibility, and make standardized designs become easy.
In addition,, can improve production management, the flexibility aspect library management, reduce manufacturing cost because general performance parts unit has the interchangeability between machine.
Further, owing to various drive transmission mechanisms such as transmission gear, ratchet gear, push rod can be configured in this clearance portion by between gear wheel in large diameter and axle supporting, forming clearance space, guarantee the installation of driving body or the degree of freedom that driving force is transmitted, the correspondence of raising and multimachine kind also is easy to assembling.