CN217280010U

CN217280010U - Novel transmission mechanism for music box

Info

Publication number: CN217280010U
Application number: CN202220632545.4U
Authority: CN
Inventors: 殷光辉
Original assignee: Ningbo Yinzhou Xinshunda Electronic Components Factory
Current assignee: Ningbo Yinzhou Xinshunda Electronic Components Factory
Priority date: 2022-03-22
Filing date: 2022-03-22
Publication date: 2022-08-23
Anticipated expiration: 2032-03-22

Abstract

The utility model relates to a novel drive mechanism for music box, it includes the shell body, at least one deck interior casing, a pedestal, core and drive mechanism, the activity chamber has been seted up to the up end of shell body, interior casing is located in the activity chamber, and it can rotate in the activity chamber, the below of shell body is located to the base, and constitute confined storage space between it and shell body and interior casing, core and drive mechanism all locate in this storage space, the core includes the clockwork spring component, the one end of clockwork spring component extends to outside the storage space, drive mechanism is connected with the other end of interior casing and clockwork spring component simultaneously, and receive the clockwork spring component control operation, and drive interior casing rotation when its operation. This technical scheme's drawback when the decoration fixed point is rotated can be overcome to the music box, makes the decoration rotate along a certain route, and then can observe whole decorations on a certain direction for its interest obtains the improvement that is showing.

Description

Novel transmission mechanism for music box

Technical Field

The utility model relates to a musical instrument technical field, more specifically say a novel drive mechanism for music box.

Background

The music box is also called music box, it is a mechanical sound instrument, the inside core that is equipped with of music box, the core includes clockwork spring, cylinder and comb, after the clockwork spring is tightened, the cylinder rotates, the bump on its surface strikes the sound comb and gives out beautiful music sound, the surface of music box often is equipped with the decoration, like personage, animal, building, things such as vehicle and flowers with sculpture style presentation, in addition, the inside transmission that still is equipped with of music box, transmission is controlled by the clockwork spring and is connected with the decoration, after the clockwork spring is tightened, transmission drives the decoration in step and is rotary motion, during the motion, along with the music sound, make the user can obtain the enjoyment in sense of hearing and the vision simultaneously.

However, the decoration of the conventional music box can only perform fixed-point rotation under the driving of its transmission mechanism, for example, the publication number is CN2272775Y, the patent name is "doll transmission mechanism of music box", in the music box described in the document, the motor drives the driving wheel via the screw set to link a gear set with the rotary block in the outer ring fluted disc, the gear set connects with the rotary block of the driving wheel via a rotary disc center, the periphery is engaged with the ring-shaped arranged planetary gears, each planetary gear body has a convex body and various linkage plates, and the linkage plates and the planetary gears are respectively provided with a link rod or a rotary shaft, and then the link rod and the rotary shaft are connected with the doll, the rotary shaft is driven to rotate when the planetary gears rotate, the fixed-point rotation of the doll is driven by the rotary shaft, under the condition that the sizes of the decoration are different, the smaller size is blocked by the larger decoration, so that it is difficult for the user to observe all decorations in one direction, the user needs to keep the position of the user or the music box, which affects the interest, so that the invention of a transmission mechanism for the music box, which can solve the above problems, is urgently needed.

SUMMERY OF THE UTILITY MODEL

To above circumstances, for overcoming the music box among the above-mentioned prior art when using, the decoration only can the fixed point rotate, and the less decoration of volume can receive blockking of great decoration, leads to being difficult to observe whole decorations on a direction, causes the problem that interesting low, the utility model aims at providing a drawback when can overcoming above-mentioned fixed point and rotate, makes the decoration can follow certain path and rotates, and then can observe whole decorations on a certain direction, makes the interesting drive mechanism who obtains showing the music box that improves.

In order to achieve the above object, the technical solution of the present invention is:

the utility model provides a novel drive mechanism for music box, it includes the shell body, at least one deck interior casing, a pedestal, core and drive mechanism, the chamber of moving about has been seted up to the up end of shell body, interior casing is located in the chamber of moving about, and it can rotate in the chamber of moving about, the below of shell body is located to the base, and constitute confined accommodation space between its and shell body and interior casing, core and drive mechanism all locate in this accommodation space, the core includes the clockwork spring component, the one end of clockwork spring component extends to outside the accommodation space, drive mechanism is connected with the other end of interior casing and clockwork spring component simultaneously, and receive the control operation of clockwork spring component, and drive interior casing when its operation and rotate.

Preferably, the outer shell is provided with a plurality of lamp shells, the lamp shells are internally provided with a decorative light source, the decorative light source is controlled and lightened by an electric control system arranged in the inner space, one end of each lamp shell extends into the containing space and is connected with the transmission mechanism, and the transmission mechanism drives each lamp shell to rotate when in operation.

Preferably, the inner case and the transmission mechanism include a first case and a main gear, respectively, the first case having a first ring gear formed on a side thereof close to the housing space, the main gear being connected to the power spring member and meshing with the first ring gear.

Preferably, the first housing is annular, and the inner housing and the transmission mechanism further respectively include a second housing and an auxiliary gear set, the auxiliary gear set is driven and transmitted by the main gear, and the second housing is disposed in the first housing, connected to the auxiliary gear set, and rotates when the auxiliary gear set is transmitting.

Preferably, the auxiliary gear set includes a first auxiliary gear engaged with the main gear, and the second housing is provided on the first auxiliary gear.

Preferably, the auxiliary gear set further includes a second auxiliary gear, and the first auxiliary gear is meshed with the main gear through the second auxiliary gear.

Preferably, the first auxiliary gear is provided with a power groove, a vertical projection plane of the power groove is non-circular, the second housing is provided with a convex column inserted into the power groove, and the shape of the convex column is matched with that of the power groove.

Preferably, a plurality of first outer gear teeth are further annularly arranged on the outer side wall of the second shell, the inner shell and the transmission mechanism further respectively comprise a third shell and a third auxiliary gear, the third shell is annular and is arranged between the first shell and the second shell, a second gear ring is formed on one side, close to the accommodating space, of the third shell, and the third auxiliary gear is meshed with the first outer gear teeth and the second gear ring simultaneously.

Preferably, the inner housing further includes a holder disposed in the inner space and connected to the base, the holder is provided with a receiving groove, the first outer gear of the second housing, the second gear of the third housing, and the third auxiliary gear are disposed in the receiving groove, the third housing is covered on the receiving groove to seal the receiving groove, and the main gear and the auxiliary gear set are disposed at the bottom of the holder.

Preferably, a limiting groove is formed in one side of the main gear, a plurality of teeth are annularly arranged on the inner side wall of the limiting groove, the clockwork member comprises a limiting part, the limiting part is embedded in the limiting groove, at least one pawl is formed on the periphery of the limiting part, a ratchet is formed on one side of the pawl close to the teeth, the ratchet is embedded between any two adjacent teeth, and the ratchet and the two adjacent teeth are respectively matched through a vertical surface and a cambered surface.

Preferably, the pawl has a free portion which is not connected with the body portion of the limiting member, the free portion extends along the outer edge of the body portion of the limiting member, and the ratchet is formed on one side of the free portion close to the teeth.

Preferably, the transmission mechanism further includes fourth auxiliary gears equal in number and corresponding to the lamp housings, each fourth auxiliary gear is connected to a corresponding lamp housing, a plurality of second external gear teeth are annularly distributed on the outer wall of the first gear ring of the first housing, and each fourth auxiliary gear is meshed with the second external gear teeth.

Preferably, the electronic control system comprises a power switch, a battery and a circuit board, the decorative light source, the power switch and the battery are all electrically connected with the circuit board, and the battery is arranged in the battery box.

Compared with the prior art, the utility model has the advantages of:

(1) the transmission mechanism runs transmission under the control of the clockwork component, the inner shell is driven to rotate during transmission, the decorating parts are arranged on the inner shell, when the inner shell rotates, the positions of the decorating parts above the inner shell are continuously changed to do synchronous circular motion, the motion path of each decorating part is a circular track taking the distance from the rotating shaft of the inner shell as the radius, so that each decorating part can periodically pass through a certain position, under the condition that the sizes of the decorating parts are different, a user can observe all the decorating parts in a certain specific direction, the problem that the decorating parts with smaller sizes are easily blocked by the decoration with larger size is further eliminated, and the interestingness of the music box of the utility model can be obviously improved,

(2) can provide power for the motion of placing other embellishments on interior casing through the rotation of interior casing, if will the utility model discloses a music box configuration is for the pattern of simulation ocean, except traditional decoration promptly, its top still is equipped with the clear glass cover, and it has liquid and grains of sand to fill in the glass cover, and the grains of sand is kicked up when inside casing rotates, and then can audio-visual simulation seabed effect for the music box possesses higher interest.

Drawings

Fig. 1 is a schematic view of the whole structure of the music box of the present invention;

fig. 2 is a schematic view of the whole structure of another view angle of the music box of the present invention;

fig. 3 is a schematic view of the whole structure of the music box movement of the present invention;

fig. 4 is a schematic view of the disassembled structure of the music box of the present invention when the first auxiliary gear is directly engaged with the main gear;

fig. 5 is a schematic view of the disassembly structure of the music box of the present invention when the first auxiliary gear is indirectly engaged with the main gear;

fig. 6 is a schematic view of the whole structure of the second casing and the first auxiliary gear of the music box of the present invention;

fig. 7 is a schematic view of the whole structure of the music box of the present invention after the first casing and the third casing are disassembled;

fig. 8 is a schematic view of the disassembled structure of the music box of the present invention after the holder is separated;

fig. 9 is a schematic view of the whole structure of the main gear and the limiting member of the music box of the present invention;

fig. 10 is an enlarged view of a portion a of fig. 9 according to the present invention;

fig. 11 is a structural frame diagram of the electric control system of the present invention.

As shown in the figure:

1. an outer housing; 2. an inner housing; 201. a first housing; 201a, a first gear ring; 201b, second outer gear teeth; 202. a second housing; 202a, a convex column; 202b, first outer gear teeth; 203. a third housing; 203a and a second gear ring; 204. a holder; 204a, a receiving groove; 3. a base; 4. a movement; 401. a clockwork member; 5. a lamp housing; 6. a decorative light source; 7. a main gear; 701. a limiting groove; 701a, teeth; 8. a first auxiliary gear; 801. a power tank; 9. a second auxiliary gear; 10. a third auxiliary gear; 11. a limiting member; 1101. a pawl; 1102. a ratchet; 12. a fourth auxiliary gear; 13. a power switch; 14. a battery; 15. a circuit board; 16. a battery case.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when in use, and the terms are only used for simplifying the description, but do not indicate or imply that the directions are the specific directions and the specific directions structures and operations that the products must have, and therefore, the present invention should not be construed as being limited.

As shown in fig. 1 and fig. 2, a music box transmission mechanism comprises an outer shell 1, at least one layer of inner shell 2, a base 3, a movement 4 and a transmission mechanism, wherein a movable cavity is arranged on the outer shell 1, the inner shell 2 is embedded in the movable cavity, and the inner shell 2 can rotate in the movable cavity, so that relative rotation between the inner shell and the outer shell 1 is realized, the base 3 is arranged below the outer shell 1, a lower opening of the outer shell 1 is closed, a closed containing space is formed among the outer shell 1, the inner shell 2 and the base 3, the movement 4 and the transmission mechanism are both arranged in the containing space, based on the closure of the containing space, the movement 4 and the transmission mechanism can be protected, the outer shell 1, the inner shell 2 and the base 3 reduce the influence of external impact on the outer shell 1, the inner shell 2 and the base 3, the specific structure of the movement 4 is consistent with the movement 4 mechanism of the traditional music box, and comprises a clockwork spring component 401, the spring component 401 passes through the base 3 and extends to the outside of the containing space for the user to manually rotate for tightening operation, a top cap is arranged on the part of the spring component 401 outside the containing space, the top cap is of a strip structure to be better convenient for the control of manual grasping, the spring component 401 is tightened and loosened, the roller rotates to strike the music comb through salient points on the outer surface of the roller to emit specific music sound, a transmission mechanism is simultaneously connected with the inner shell 2 and the other end of the spring component 401, the transmission mechanism operates transmission under the control of the spring component 401 and drives the inner shell 2 to rotate when in transmission, the decorations are arranged on the inner shell 2, the positions of the decorations above the inner shell 2 are continuously changed to perform synchronous circular motion when the inner shell 2 rotates, the motion path of each decoration is a circular track with the radius from the rotating shaft of the inner shell 2, the event makes the process of each decoration can be periodic a certain position, under the inconsistent circumstances of decoration volume size, also can make the user observe whole decorations in a certain specific direction, and then eliminate the less decoration of volume and receive the great problem of decorating and blockking of volume easily, make the utility model discloses the interest of music box can be showing and is improving, simultaneously, can provide power for the motion of placing other embellishments on interior casing 2 through the rotation of interior casing 2, if will the utility model discloses a music box configuration is for the pattern of simulation ocean, except traditional decoration promptly, its top still is equipped with the clear glass cover, and it has liquid and grains of sand to fill in the glass cover, and the grains of sand is raised when inside casing rotates, and then can audio-visual simulation seabed effect for the music box possesses higher interest.

As shown in fig. 1 and 7, be equipped with a plurality of lamp casings 5 on the shell body 1, be equipped with decorative light source 6 in the lamp casing 5, decorative light source 6 is lighted by the electrical system control of locating in the storage space, when using the music box, the decorative light source 6 is lighted to the selectivity, and the light efficiency through decorative light source 6 is decorated, and atmosphere when increasing the music box and using feels, further improves the utility model discloses the interest of music box, the one end of lamp casing 5 extends to and is connected with drive mechanism in the storage space, and drive each lamp casing 5 rotation during drive mechanism moves, and when lamp casing 5 rotated, decorative light source 6 rotates in step for the light beam direction that decorative light source 6 sent constantly changes, improves the effect of playing up the atmosphere.

As shown in fig. 1, 4, 5 and 8, the inner housing 2 and the transmission mechanism respectively include a first housing 201 and a main gear 7, a first gear ring 201a is formed on one side of the first housing 201 close to the receiving space, the main gear 7 is inserted into the clockwork member 401 and located in the first gear ring 201a and engaged with the first gear ring 201a, when the clockwork member 401 rotates, the main gear 7 is driven to rotate synchronously, the main gear 7 drives the first gear ring 201a and the first housing 201 integrally formed therewith to transmit, and when the first housing 201 rotates, the first housing 201 drives the decoration thereon to perform circular motion.

As shown in fig. 1, 4, 5 and 8, the first housing 201 is ring-shaped, and the inner housing 2 and the transmission mechanism further respectively include a second housing 202 and an auxiliary gear set, the auxiliary gear set is located in the first gear ring 201a of the first housing 201 and driven by the main gear 7, the second housing 202 is located in the inner ring of the first housing 201, the second housing 202 is connected to the auxiliary gear set, the main gear 7 drives the auxiliary gear set and the first gear ring 201a for transmission, so as to drive the first housing 201 and the second housing 202 to synchronously rotate and drive the respective upper decoration members to circularly move, since the main gear 7 is simultaneously engaged with the first gear ring 201a and the auxiliary gear ring 7 set, the linear velocity during transmission is consistent, and the rotational velocity is related to the respective radii, since the radius of the first gear ring 201a is larger, a rotational velocity difference is formed between the decoration members on the first housing 201 and the second housing 202, make the decoration of connecting separately can keep crisscross rotation, and then improve the utility model discloses interesting when the music box uses.

As shown in fig. 1, 4 and 8, the auxiliary gear set includes a first auxiliary gear 8, the first auxiliary gear 8 is engaged with the main gear 7, the engagement mode includes direct engagement and indirect engagement, in this embodiment, the first auxiliary gear 8 is directly engaged with the main gear 7, the second housing 202 is disposed on the first auxiliary gear 8, when the main gear 7 rotates, the first auxiliary gear 8 is driven to rotate, and the second housing 202 is driven to rotate by the first auxiliary gear 8.

As shown in fig. 5, the auxiliary gear set further includes a second auxiliary gear 9, in this embodiment, the first auxiliary gear 8 is indirectly engaged with the main gear 7 through the second auxiliary gear 9, when the main gear 7 rotates, the second auxiliary gear 9 is firstly driven to rotate, then the second auxiliary gear 9 drives the first auxiliary gear 8 to rotate, and finally the first auxiliary gear 8 drives the second housing 202 to rotate.

As shown in fig. 6 and 7, the first auxiliary gear 8 is provided with a power groove 801, a vertical projection plane of the power groove 801 is non-circular, the second housing 202 is provided with a convex column 202a inserted into the power groove 801, the convex column 202a is matched with the power groove 801 in shape, and when the first auxiliary gear 8 rotates, the first auxiliary gear 8 can directly drive the second housing 202 to rotate based on the non-circular surface matching between the power groove 801 and the convex column 202a, so as to avoid slipping.

As shown in fig. 6 and 8, the outer sidewall of the second housing 202 further has a plurality of first external gear teeth 202b, the inner housing 2 and the transmission mechanism further include a third housing 203 and a third auxiliary gear 10, respectively, the third housing 203 is in a ring shape and is embedded between the first housing 201 and the second housing 202, in the present invention, the inner housing 2 is configured into three layers, the movable cavity of the outer housing 1 is closed by the first housing 201, the second housing 202 and the third housing 203, a second gear ring 203a is formed on one side of the third housing 203 close to the receiving space, the third auxiliary gear 10 is simultaneously engaged with the first external gear teeth 202b and the second gear ring 203a, when the first auxiliary gear 8 drives the second housing 202 to rotate, the second external gear teeth 201b outside the second housing 202 drives the third main gear 7 to rotate, and the third auxiliary gear 10 drives the second gear ring 203a and the third housing 203 to rotate, equally, because the first outer teeth of a cogwheel 202b of first ring gear 201a, second ring gear 203a is apart from the radial difference of pivot for decoration on first casing 201, second casing 202 and the third casing 203 has the rotational speed difference when rotating, and crisscross removal is realized to multi-level rotational speed difference, makes the utility model discloses it is interesting to have more when the music box uses.

As shown in fig. 4, 5, 7 and 8, the inner case 2 further includes a holder 204, the holder 204 is provided in the receiving space, and is connected with the base 3, specifically, the two are fixed in the way of inserting and matching the inserted bar and the inserted tube, the holder 204 is provided with a receiving groove 204a, the first external gear 202b of the second shell 202, the second ring gear 203a of the third shell 203 and the third auxiliary gear 10 are all positioned in the receiving groove 204a, and the third housing 203 is covered on the receiving groove 204a to close the receiving groove 204a, so that the second ring gear 203a and the first external gear hel third auxiliary gear 10 thereof can be protected by the outer wall of the closed accommodation groove 204a, while supporting the second housing 202, the third housing 203 and the third auxiliary gear 10, and the main gear 7 and the auxiliary gear set are both arranged at the bottom of the retainer 204, thereby forming a support fixing point on the retainer 204.

As shown in fig. 3 to 5 and 8 to 10, a stopper groove 701 is formed at one side of the main gear 7, a plurality of teeth 701a are annularly formed on an inner side wall of the stopper groove 701, the teeth 701a are annularly arranged end to end along an inner wall of the stopper groove 701, both sides of each tooth 701a are a straight surface and a curved surface, a distance from an outer edge of the main gear 7 to the curved surface gradually increases from a straight surface of another tooth 701a adjacent thereto to the straight surface thereof, the clockwork member 401 includes a stopper 11 embedded in the stopper groove 701, the stopper 11 is formed at an outer periphery thereof with at least one pawl 1101, a ratchet 1102 is formed at a side of the pawl 1101 close to the tooth 701a, the ratchet 1102 is embedded between any two adjacent teeth 701a, the ratchet 1102 has another straight surface engaged with the straight surface of the tooth 701a and another curved surface engaged with the curved surface of the tooth 701a, and the clockwork member 401 is defined as a forward rotation in a direction toward the straight surface of the tooth 701a, at this moment, ratchet 1102 receives the flat and straight face of tooth 701a to block, and exert pressure on tooth 701a, and then drive main gear 7 synchronous rotation, the spiral power spring of can be smooth at this moment, and the direction that deviates from the flat and straight face of tooth 701a rotates for reverse rotation, at this moment, ratchet 1102 can slide along tooth 701 a's cambered surface, and slide to another tooth 701 a's cambered surface from tooth 701 a's cambered surface, at this moment, owing to not being hindered by tooth 701a lateral wall, so ratchet 1102 can't drive main gear 7 and rotate, based on above-mentioned setting, make spiral power spring component 401 also can realize reverse rotation, avoid appearing spiral power spring component 401 and being twisted off because of unable reverse rotation by force, cause the emergence of the condition of infant's mistake feeding, the utility model discloses the security of music box has been improved.

As shown in fig. 9 and 10, the pawl 1101 has a free portion which is not contiguous with the body portion of the limiting member 11, the free portion extends along the outer edge of the body portion of the limiting member 11, the ratchet 1102 is formed on the side of the free portion adjacent to the tooth 701a, when the clockwork member 401 rotates in the forward direction, the stopper 11 drives the ratchet 1102 to slide along the arc of the tooth 701a, and as the distance between the arc and the outer edge of the main gear 7 increases, so that the free portion has a certain pressing space, and when sliding to the arc surface of the other tooth 701a, due to the reduced distance from the outer edge of the main gear 7, the free part of the pawl 1101 is allowed to recover its deformation by itself, further, noise generated when the clockwork member 401 rotates reversely is reduced, friction generated by rotation of the limiting piece 11 can be effectively reduced, noise generated in the rotating process is reduced, and the service life of the whole clockwork member 401 is prolonged.

As shown in fig. 1, 4, 5, 7 and 8, the transmission mechanism further includes a fourth auxiliary gear 12 having the same number as the lamp housing 5 and corresponding to the lamp housing 5, a shaft-shaped protrusion is formed at the lower end of the lamp housing 5 and connected to the corresponding fourth auxiliary gear 12 through the shaft-shaped protrusion, a plurality of second external gear teeth 201b are distributed on the outer wall of the first ring gear 201a of the first housing 201, each fourth auxiliary gear 12 is meshed with the second external gear teeth 201b, and when the first ring gear 201a of the first housing 201 is driven by the main gear 7 to rotate, the fourth auxiliary gear 12 can be driven by the first ring gear 201a to rotate synchronously, and the lamp housing 5 and the decorative light source 6 located in the lamp housing 5 are driven to rotate synchronously and coaxially under the rotation of the fourth auxiliary gear 12.

As shown in fig. 11, electrical system includes switch 13, battery 14 and circuit board 15, decorates light source 6, switch 13 and battery 14 and all is connected with circuit board 15 electricity, and battery 14 is located in battery case 16, the utility model discloses during circuit board 15 was located and is accomodate the space, on switch 13 and battery case 16 were then fixed in base 3, battery 14 was the power supply of decorating light source 6, the utility model provides a button cell 14 is preferred for use to battery 14, and when battery 14 electric quantity was low excessively, can directly take off the battery 14 lid of battery case 16 and change can.

Referring to fig. 1 to 11, when the music box of the present invention is used, the power switch 13 can be opened to make the decorative light source 6 in the lamp housing 5 decorated by light effect, and then the clockwork is tightened by rotating the clockwork 401 in the forward direction, when the clockwork 401 is rotated in the forward direction, the ratchet 1102 of the pawl 1101 of the position-limiting member 11 drives the main gear 7 to rotate, the main gear 7 synchronously drives the first gear ring 201a of the first housing 201 and the first auxiliary gear 8 or the second auxiliary gear 9 to rotate, the second auxiliary gear 9 drives the first auxiliary gear 8 to rotate, at this time, the first housing 201 integrally formed with the first gear ring 201a rotates, meanwhile, the first gear ring 201a drives the fourth auxiliary gear 12 engaged with the second gear tooth 201b on the outer wall thereof to rotate, when the fourth auxiliary gear 12 rotates, the lamp housing 5 synchronously rotates, thereby the direction of the light beam emitted from the decorative light source 6 continuously changes, and the first auxiliary gear 8 drives the second housing 202 to rotate, when the second housing 202 rotates, the third auxiliary gear 10 is driven to rotate by the first external gear teeth 202b on the outer wall thereof, and then the second gear ring 203a of the third housing 203 is driven to rotate by the third main gear 7, so that the decorations on the first housing 201, the second housing 202 and the third housing 203 rotate alternately at the same time.

The foregoing embodiments and description have been provided to illustrate the principles and preferred embodiments of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed.

Claims

1. A novel transmission mechanism for a music box is characterized by comprising an outer shell (1), at least one layer of inner shell (2), a base (3), a machine core (4) and a transmission mechanism, wherein a movable cavity is formed in the upper end face of the outer shell (1), the inner shell (2) is arranged in the movable cavity and can rotate in the movable cavity, the base (3) is arranged below the outer shell (1) and forms a closed accommodating space with the outer shell (1) and the inner shell (2), the machine core (4) and the transmission mechanism are both arranged in the accommodating space, the machine core (4) comprises a clockwork spring component (401), one end of the clockwork spring component (401) extends out of the accommodating space, the transmission mechanism is simultaneously connected with the other ends of the inner shell (2) and the clockwork spring component (401) and is controlled by the clockwork spring component (401) to operate, and drives the inner shell (2) to rotate when the inner shell operates.

2. The novel transmission mechanism for the music box according to claim 1, wherein a plurality of lamp housings (5) are arranged on the outer casing (1), a decorative light source (6) is arranged in each lamp housing (5), the decorative light source (6) is controlled and lighted by an electric control system arranged in the inner space, one end of each lamp housing (5) extends into the accommodating space and is connected with the transmission mechanism, and the transmission mechanism drives each lamp housing (5) to rotate during operation.

3. A novel transmission mechanism for a music box according to claim 2, characterized in that said inner case (2) and transmission mechanism comprise a first case (201) and a main gear (7), respectively, said first case (201) having a first ring gear (201a) formed on a side thereof near the housing space, said main gear (7) being connected to said wind spring member (401) and engaging with said first ring gear (201 a).

4. A new type of transmission mechanism for music box according to claim 3, characterized in that the first housing (201) is ring-shaped, and the inner housing (2) and transmission mechanism further comprises a second housing (202) and an auxiliary gear set respectively, the auxiliary gear set is driven and transmitted by the main gear (7), the second housing (202) is arranged in the first housing (201) and connected with the auxiliary gear set, and rotates when the auxiliary gear set is transmitted.

5. A new type of transmission mechanism for music boxes according to claim 4, characterized in that said auxiliary gear set comprises a first auxiliary gear (8), said first auxiliary gear (8) being meshed with the main gear (7), said second housing (202) being provided on said first auxiliary gear (8).

6. A new type of transmission mechanism for music boxes according to claim 5, characterized by that, said auxiliary gear set further comprises a second auxiliary gear (9), said first auxiliary gear (8) is meshed with the main gear (7) through the second auxiliary gear (9).

7. The novel transmission mechanism for the music box according to claim 5, characterized in that the first auxiliary gear (8) is provided with a power groove (801), the vertical projection plane of the power groove (801) is non-circular, the second housing (202) is provided with a convex column (202a) inserted into the power groove (801), and the shape of the convex column (202a) is matched with the power groove (801).

8. The novel transmission mechanism for music box according to claim 4, wherein a plurality of first external gear teeth (202b) are further annularly provided on the outer side wall of the second housing (202), the inner housing (2) and the transmission mechanism further comprise a third housing (203) and a third auxiliary gear (10), respectively, the third housing (203) is ring-shaped and is provided between the first housing (201) and the second housing (202), and a second gear ring (203a) is formed on one side of the third housing (203) close to the receiving space, and the third auxiliary gear (10) is engaged with the first external gear teeth (202b) and the second gear ring (203a) at the same time.

9. The novel transmission mechanism for music box according to claim 8, wherein the inner casing (2) further comprises a holder (204), the holder (204) is disposed in the inner space and connected to the base (3), the holder (204) has a receiving groove (204a), the first external gear (202b) of the second casing (202), the second ring gear (203a) of the third casing (203) and the third auxiliary gear (10) are all located in the receiving groove (204a), the third casing (203) is covered on the receiving groove (204a) to seal it, and the main gear (7) and the auxiliary gear set are both disposed at the bottom of the holder (204).

10. The novel transmission mechanism for the music box according to claim 3, wherein a limiting groove (701) is formed on one side of the main gear (7), a plurality of teeth (701a) are annularly arranged on the inner side wall of the limiting groove (701), the clockwork spring member comprises a limiting piece (11), the limiting piece (11) is embedded in the limiting groove (701), at least one pawl (1101) is formed on the periphery of the limiting piece (11), a ratchet tooth (1102) is formed on one side of the pawl (1101) close to the teeth (701a), the ratchet tooth (1102) is embedded between any two adjacent teeth (701a), and the ratchet tooth and two adjacent teeth (701a) are respectively in vertical surface fit and arc surface fit.

11. A new gear mechanism for a music box according to claim 10, characterized in that said pawl (1101) has a free portion which is not contiguous with the body portion of the retaining member (11), said free portion extending along the outer edge of the body portion of the retaining member (11), said ratchet teeth (1102) being formed on the side of the free portion adjacent to the teeth (701 a).

12. The novel transmission mechanism for the music box according to claim 3, characterized in that the transmission mechanism further comprises a fourth auxiliary gear (12) which is equal in number and corresponds to the lamp housing (5), each fourth auxiliary gear (12) is connected with the corresponding lamp housing (5), a plurality of second external gear teeth (201b) are distributed on the outer wall of the first gear ring (201a) of the first housing (201), and each fourth auxiliary gear (12) is meshed with the second external gear teeth (201 b).

13. The novel transmission mechanism for music box according to claim 2, wherein the electronic control system comprises a power switch (13), a battery (14) and a circuit board (15), the decorative light source (6), the power switch (13) and the battery (14) are all electrically connected with the circuit board (15), and the battery (14) is disposed in the battery box (16).