CN213954289U - Differential transmission mechanism of mahjong shuffling large plate and mahjong shifting device of mahjong machine - Google Patents
Differential transmission mechanism of mahjong shuffling large plate and mahjong shifting device of mahjong machine Download PDFInfo
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- CN213954289U CN213954289U CN202021993217.4U CN202021993217U CN213954289U CN 213954289 U CN213954289 U CN 213954289U CN 202021993217 U CN202021993217 U CN 202021993217U CN 213954289 U CN213954289 U CN 213954289U
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Abstract
The utility model discloses a differential transmission mechanism of a shuffling large plate and a shuffling device of a mahjong machine, which comprises a central shaft seat and a planetary gear reducer sleeved on the periphery of the central shaft seat, wherein the planetary gear reducer and the central shaft seat are circumferentially positioned; a primary speed reduction transmission pair is arranged between the planetary gear reducer and the shuffling large disc, and a secondary speed reduction transmission pair is arranged between the planetary gear reducer and the shuffling device. The utility model discloses directly assemble planetary gear reducer to center pin seat periphery to set up planetary gear reducer and center pin seat circumference location, the two has great lifting surface area, and planetary gear reducer with shuffle the big dish and dial the tablet ware isolated, then the planetary gear ware can avoid shuffling the big dish and dial the wearing and tearing of tablet ware or this wearing and tearing can neglect, can ensure planetary gear reducer operation stable, finally ensure to shuffle the big dish and dial the transmission between the tablet ware stable effectively.
Description
Technical Field
The utility model belongs to the technical field of mahjong machine, in particular to a differential transmission mechanism of a mahjong shuffling large plate and a mahjong shifting device of a mahjong machine.
Background
The shuffling device of the mahjong machine generally comprises a shuffling large disc, wherein the center of the shuffling large disc is rotatably connected with a bearing seat, the bottom end of the bearing seat is fixedly connected with a base plate of the mahjong machine, the top end of the bearing seat is provided with a mahjong shifting device, and the mahjong shifting device is provided with a plurality of mahjong shifting strips extending on the top surface of the shuffling large disc.
In the traditional mahjong machine, the shuffling large plate can rotate circumferentially relative to the bearing seat under the driving of the shuffling motor, and the positions of the card shifting device and the card shifting strip are kept constant, so that the card shifting strip can be used for shifting mahjong tiles on the shuffling large plate in the rotation process of the shuffling large plate.
The mahjong machine has the following disadvantages: (1) because the position of the poker shifting strip is kept fixed in the rotation process of the shuffling big plate, the phenomena of 'dead angle for playing mahjong' and mahjong blocked between the poker shifting strip and the shuffling big plate often occur at the position of the poker shifting strip, and the shuffling process is influenced; (2) when the shuffling large disk rotates, the shuffling large disk and the card shifting strips have larger differential speed, and when more mahjong tiles exist, the mahjong tiles can continuously impact the card shifting strips, so that shuffling noise is larger.
In order to solve the problems, the Chinese patent application with the publication number of CN108031108A discloses a batch shuffling device of a mahjong machine and a shuffling method thereof, the batch shuffling device comprises a large disk and a large disk shaft seat arranged in the center of the large disk, the large disk is rotatably connected with the large disk shaft seat, the upper surface of the large disk is provided with a tile poking bar in a fitting manner, and a clutch device for controlling the large disk and the tile poking bar to synchronously rotate and relatively rotate is arranged between the tile poking bar and the large disk shaft seat.
The shuffling device has the following disadvantages: the rotating speed of the shuffling large disk is kept unchanged, the rotating state of the shuffling bars is different relative to the shuffling large disk only by controlling the shuffling bars by using the clutch, the change of the rotating state of the shuffling bars depends on the clutch, and the abrasion to parts is inevitable; when the poker bar and the large shuffling disc rotate synchronously by friction, the large shuffling disc is also abraded greatly.
On the basis, the Chinese patent application with the publication number of CN110237525A discloses a rotary tile-poking strip large disc mechanism and a mute mahjong machine, wherein the rotary tile-poking strip large disc mechanism comprises a lower large disc in a horizontal state and an umbrella-shaped upper large disc, and the lower large disc is arranged on a lower bearing seat through a lower bearing; the card-shifting device is arranged on the upper bearing seat through an upper bearing, the edge of the upper large disk is fixedly arranged on the lower large disk, and the center of the upper large disk is positioned on the periphery of the upper bearing; the planet carrier is fixedly arranged at the position where the upper bearing seat and the lower bearing seat are connected, the planet carrier is rotatably connected with a planetary wheel set, a large central wheel meshed with the planetary wheel set is arranged on the poker card shifting device, and a sun wheel meshed with the planetary wheel set is also arranged on the lower large disc.
When the motor drives the lower big disc to rotate, the sun wheel, the planetary wheel set and the big central wheel are sequentially driven, so that the power of the lower big disc is decelerated and distributed to the card poking device, and the card poking device rotates relative to the lower big disc.
The large plate mechanism for rotationally dialing the poker bars has the following disadvantages: the shuffling large disc is divided into a lower large disc and an upper large disc, and the planet carrier and the planetary wheel set are arranged in a gap between the lower large disc and the upper large disc; the planet carrier is only set to be a thin flat plate shape, and the planet carrier is clamped by the upper bearing seat and the lower bearing seat to realize circumferential positioning of the planet carrier; when the card shifting device rotates relative to the shuffling large disc, the planet carrier clamped between the upper bearing seat and the lower bearing seat bears friction from the upper bearing and the lower bearing in the whole card shuffling process, so that the service life of the planet carrier is influenced, the thickness of the planet carrier is further thinned due to long-term friction, the planet carrier is difficult to maintain circumferential positioning, and finally the transmission of a planet wheel set fails; meanwhile, because the stress area between the planet carrier and the upper bearing seat and the lower bearing seat is small, the support effect of the planet carrier on the planetary wheel set is still insufficient, and the stable operation of the planetary wheel set can be ensured only by arranging the support rollers on the outer periphery of the planet carrier.
SUMMERY OF THE UTILITY MODEL
The invention aims to provide a differential transmission mechanism of a shuffling large plate and a card shifting device of a mahjong machine, which not only has stable operation, but also can ensure stable and effective transmission between the shuffling large plate and the card shifting device.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
a differential transmission mechanism for a shuffling large plate and a shuffling device of a mahjong machine comprises a central shaft seat and a planetary gear reducer sleeved on the periphery of the central shaft seat, wherein the planetary gear reducer and the central shaft seat are circumferentially positioned;
a primary speed reduction transmission pair is arranged between the planetary gear reducer and the shuffling large disc, and a secondary speed reduction transmission pair is arranged between the planetary gear reducer and the shuffling device.
The utility model discloses directly assemble planetary gear reducer to center pin seat periphery to set up planetary gear reducer and center pin seat circumference location, the two has great lifting surface area, and planetary gear reducer with shuffle the big dish and dial the tablet ware isolated, then the planetary gear ware can avoid shuffling the big dish and dial the wearing and tearing of tablet ware or this wearing and tearing can neglect, can ensure planetary gear reducer operation stable, finally ensure to shuffle the big dish and dial the transmission between the tablet ware stable effectively.
In the differential transmission mechanism of the mahjong shuffling large plate and the mahjong shifting device of the mahjong machine, the planetary gear reducer comprises a planet carrier, the planet carrier is provided with a first assembling hole position, and the central shaft seat is provided with a positioning seat part matched with the first assembling hole position;
the inner peripheral wall of the first assembling hole site is provided with a convex part or a concave area, and the outer peripheral wall of the positioning seat part is provided with a concave area or a convex part matched with the positioning seat part. When the planet carrier is installed on the positioning seat part, the convex parts are embedded into the corresponding concave areas, and circumferential positioning of the planet carrier is formed.
In the differential transmission mechanism of the mahjong shuffling large plate and the mahjong shifting device of the mahjong machine, at least two convex parts which are uniformly distributed around the first assembling hole site are formed on the inner peripheral wall of the first assembling hole site, each convex part comprises a radial boss, and one end of the radial boss facing to the axle center of the first assembling hole site is provided with a plurality of radial positioning latch teeth;
the periphery wall of location seat portion on be formed with the depressed area with each bellying adaptation one by one, each depressed area all include with the radial recess of this radial boss looks adaptation and with the radial positioning draw-in groove of this radial positioning latch looks adaptation.
The radial boss and the radial groove, the radial positioning latch and the radial positioning clamping groove which are matched can realize double circumferential positioning of the planet carrier.
In the differential transmission mechanism of the shuffling large plate and the shuffling device of the mahjong machine, the depressed area is provided with an opening positioned on the top surface and the peripheral wall of the positioning seat part, the bottom surface of the depressed area forms a limit step, and the bottom surface of the bulge part is abutted against the limit step;
the central shaft seat is fixedly connected with a locking seat positioned on the top surface of the planet carrier, and the locking seat and the limiting step form axial limiting on the planet carrier. The concave area not only can realize circumferential positioning of the convex part, but also the bottom surface of the concave area naturally forms a limiting step at the bottom surface of the convex part, and the locking seat is arranged above the planet carrier, so that the axial limiting of the planet carrier can be formed by the locking seat and the limiting step; thus, the planetary gear reducer has independent assembling space on the central shaft seat and is separated from the large shuffling plate and the large shuffling seat.
In the differential transmission mechanism of the mahjong shuffling large plate and the mahjong shuffling device of the mahjong machine, the central shaft seat is provided with an external thread seat part which is positioned on the top surface of the positioning seat part, the external diameter of the external thread seat part is smaller than that of the positioning seat part, and the locking seat is in threaded connection with the external thread seat part. The locking seat and the external thread seat part which are in threaded connection are very convenient to assemble, and the planet carrier is convenient to realize quick limiting; and the external diameter of the external thread seat part is smaller than that of the positioning seat part, the top surface of the positioning seat part can be provided with a concave area.
In the differential transmission mechanism of the shuffling large disc and the shuffling device of the mahjong machine, the primary speed reduction transmission pair comprises a primary speed reduction planetary gear which is rotationally connected with the planet carrier and a power input gear which is fixedly arranged on the shuffling large disc, and the primary speed reduction planetary gear is meshed with the power input gear;
the second-stage reduction transmission pair comprises a second-stage reduction planetary gear rotationally connected to the planet carrier and a power output gear fixedly arranged on the card shifting device, the second-stage reduction planetary gear is meshed with the power output gear, and the second-stage reduction planetary gear and the first-stage reduction planetary gear are coaxially arranged.
In the differential transmission mechanism of the mahjong shuffling large plate and the mahjong shifting device of the mahjong machine, the planet carrier comprises a planet carrier body provided with a first assembling hole site, the upper end and the lower end of the planet carrier body are respectively provided with an outward flange, and a planet wheel mounting space for mounting a primary reduction planet gear and a secondary reduction planet gear is formed between the two outward flanges. So two flanging can fix a position the both ends of one-level reduction planetary gear and second grade reduction planetary gear's center pin for one-level reduction planetary gear and second grade reduction planetary gear operation are more stable.
When the power input gear is in transmission with the first-stage reduction planetary gear, the power can be input from the outer ring side of the circumference of the first-stage reduction planetary gear, and the power can also be input from the inner ring side of the circumference of the first-stage reduction planetary gear. When the power input gear inputs power from the inner ring side of the circumference of the first-stage reduction planetary gear, in order to realize the transmission of the power input gear and the first-stage reduction planetary gear, in the differential transmission mechanism of the mahjong shuffling large plate and the mahjong shifting device of the mahjong machine, the center of the planet carrier body is provided with a second assembling hole site communicated with the first assembling hole site, and the inner diameter of the second assembling hole site is larger than that of the first assembling hole site;
the power input gear is positioned in the second assembling hole, and the planet carrier body is provided with a first through opening which is used for communicating the second assembling hole and the planet gear installing space so that the primary reduction planet gear is meshed with the power input gear.
Similarly, the transmission positions of the power output gear and the secondary reduction planetary gear may be located on the inner ring side or the outer ring side of the circumference where the secondary reduction planetary gear is located, when the transmission positions of the power output gear and the secondary reduction planetary gear are located on the inner ring side of the circumference where the secondary reduction planetary gear is located, in order to facilitate the transmission of the power output gear and the secondary reduction planetary gear, in the differential transmission mechanism of the mahjong shuffling large plate and the mahjong shifting device of the mahjong machine, the top surface of the planet carrier body is concavely provided with an annular avoiding groove, the power output gear is located in the annular avoiding groove, and the planet carrier body is further provided with a second through hole for communicating the annular avoiding groove with the planet gear installation space so as to facilitate the transmission of the secondary reduction planetary gear and the power output end.
In the differential transmission mechanism of the mahjong shuffling large plate and the mahjong shuffling device of the mahjong machine, at least two primary speed reducing planetary gears are arranged, and all the primary speed reducing planetary gears are uniformly arranged on the planetary frame in the circumferential direction.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
(1) the utility model discloses directly assemble planetary gear reducer to center pin seat periphery to set up planetary gear reducer and center pin seat circumference location, the two has great lifting surface area, and planetary gear reducer with shuffle the big dish and dial the tablet ware isolated, then the planetary gear ware can avoid shuffling the big dish and dial the wearing and tearing of tablet ware or this wearing and tearing can neglect, can ensure planetary gear reducer operation stable, finally ensure to shuffle the big dish and dial the transmission between the tablet ware stable effectively.
(2) The utility model can realize the double circumferential positioning of the central shaft seat to the planet carrier by utilizing the radial boss and the radial groove, the radial positioning latch and the radial positioning slot which are matched with each other; after the radial groove and the radial positioning clamping groove are formed, the bottom surface of the radial groove and the bottom surface of the radial positioning clamping groove naturally form a limiting step positioned on the bottom surface of the convex part, and the locking seat is arranged above the planet carrier, so that the axial limiting of the planet carrier can be formed by the locking seat and the limiting step; thus, the planetary gear reducer has independent assembling space on the central shaft seat and is separated from the large shuffling plate and the large shuffling seat.
(3) In the utility model, the locking seat is in threaded connection with the external thread seat part on the central shaft seat, so that the assembly is very convenient, and the planet carrier can be quickly limited; and the external diameter of the external thread seat part is smaller than that of the positioning seat part, so that the top surface of the positioning seat part can be provided with a recessed area for circumferentially positioning the planet carrier.
(4) The utility model discloses in, for the convenience of power input gear from the inner circle side input power of one-level reduction planetary gear place circumference, planet carrier's center second assembly hole site that is used for holding power input gear has, planet carrier on still offer and be used for intercommunication second assembly hole site and planet wheel installation space so that one-level reduction planetary gear and power input end driven first through-hole.
(5) The utility model discloses in, in order to realize the transmission of the two when power take off gear is in the inner circle side of second grade speed reduction planetary gear place circumference, the top surface of planet carrier body is still concave to be equipped with the annular that is used for holding power take off gear and dodges the groove, the planet carrier body on still offer and be used for the intercommunication annular to dodge groove and planet wheel installation space so that second grade speed reduction planetary gear and power take off end driven second run through the mouth.
Drawings
FIG. 1 is a schematic view of a partial explosion structure of a differential transmission mechanism of a tile shuffling large plate and a tile shifting device of the mahjong machine of the present invention;
FIG. 2 is a schematic structural view of the center shaft seat shown in FIG. 1;
FIG. 3 is a schematic illustration of the planetary gear reducer of FIG. 1;
FIG. 4 is a schematic illustration of the planetary gear reducer of FIG. 1 from another perspective;
FIG. 5 is a schematic view of an explosion structure when the differential transmission mechanism of the shuffling large plate and the card poking device of the mahjong machine of the utility model is used in the mahjong machine shuffling device;
FIG. 6 is a schematic view of the transmission structure between the differential transmission mechanism of the shuffling large plate and the card shifting device of the mahjong machine of the present invention.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.
Example 1
As shown in fig. 1, the differential transmission mechanism of the mahjong shuffling large plate and the mahjong shifting device of the embodiment includes a central shaft seat 2 and a planetary gear reducer 4 sleeved on the periphery of the central shaft seat 2.
As shown in fig. 2 and shown in fig. 3, the central shaft seat 2 has a card-shifting shaft seat 25, an external thread seat 24, a positioning seat 23 and a shuffling shaft seat 26, which are arranged in sequence from top to bottom, the outer diameters of the card-shifting shaft seat 25, the external thread seat 24 and the shuffling shaft seat 26 are increased in sequence, and the outer diameter of the positioning seat 23 is equal to that of the shuffling shaft seat 26; the card-shifting shaft seat part 26 is provided with the card-shifting device 3 in a rotatable mode through a bearing, the positioning seat part 23 is used for installing the planetary gear reducer 4, and the shuffling shaft seat part 26 is provided with the shuffling large disc 1 in a rotatable mode through a bearing.
As shown in fig. 3, in the present embodiment, the planetary gear reducer 4 includes a carrier 41, and the carrier 41 includes a carrier body 41a having a cylindrical shape, and the center of the carrier body 41a has a first fitting hole 41b for facilitating mounting of the carrier 41 to the shuffler shaft-receiving portion 23.
As shown in fig. 2 and 3, and as can be seen in conjunction with fig. 1, the planet carrier 41 is circumferentially positioned and axially limited from the positioning seat 23. Wherein, the two circumferential positioning modes are as follows: three convex parts 41c are uniformly arranged on the inner peripheral wall of the first assembling hole position 41b, three concave areas 21 matched with the outer peripheral wall of the top end of the positioning seat part 23 are formed on the outer peripheral wall of the top end of the positioning seat part 23, and each concave area 21 is provided with an opening on the top surface and the outer peripheral wall of the positioning seat part 23; when the carrier 41 is mounted on the positioning seat 23 from top to bottom, the protrusions 41c are fitted into the corresponding recessed areas 21, and the circumferential positioning of the carrier 41 is performed.
Specifically, each of the protruding portions 41c includes a radial boss 41ca, and one end of the radial boss 41ca facing the axis of the first mounting hole 41b is provided with a plurality of radial positioning latches 41 cb; correspondingly, each recessed area 21 on the positioning seat 23 includes a radial groove 21a adapted to the radial boss 41ca and a radial positioning slot 21b adapted to the radial positioning latch 41 cb.
When the planet carrier 41 is mounted on the positioning seat portion 23, the radial boss 41ca and the radial groove 21a, the radial positioning latch 41cb and the radial positioning latch groove 21b which are nested form a double circumferential positioning for the planet carrier 41, and meanwhile, the bottom surfaces of the radial groove 21a and the radial positioning latch 41cb naturally form a limit step 22 below the planet carrier 41; and the locking seat 6 above the planet carrier 41 is installed on the external thread seat part 24 in a threaded manner, and the axial position of the planet carrier 41 on the positioning seat part 23 is limited by the matching of the locking seat 6 and the limiting step 22.
As shown in fig. 3 and 4 and seen in fig. 1, the planet carrier body 41a has flanged edges 41d at both ends, and a planet wheel mounting space 44 is formed between the flanged edges 41 d. Three primary reduction planetary gears 42a are uniformly arranged in the planet wheel mounting space 44 in the circumferential direction, and two ends of the central shaft of the three primary reduction planetary gears 42a are respectively in running fit with corresponding outward turned edges 41 d; a second reduction planetary gear 43a is fixedly fitted on the central axis of one of the first reduction planetary gears 42 a.
In the present embodiment, the outer diameter of the secondary reduction planetary gear 43a is smaller than the outer diameter of the first reduction planetary gear 42a, and the width of the flanged edge 41d near the secondary reduction planetary gear 43a is smaller than the width of the flanged edge 41d near the primary reduction planetary gear 42 a; so that the sectional area of the planetary gear reducer 4 is gradually reduced from the second-stage reduction planetary gear 43a side to the first-stage reduction planetary gear 42a side, and unnecessary influence on the fall of mahjong tiles in the use process is avoided.
As shown in fig. 5, a power input gear 42b engaged with each of the first reduction planetary gears 42a is fixed to the top surface of the shuffle platter 1, and the power input gear 42b and the first reduction planetary gears 42a constitute a first reduction gear pair 42. The power input gear 42b of the present embodiment is an external gear, and the power input gear 42b is located at the inner ring of the primary reduction planetary gear 42a at the time of transmission; in order to facilitate the engagement of the power input gear 42b with the primary reduction planetary gear 42a, the planet carrier body 41a has a second assembling hole 41e at the center thereof communicating with the first assembling hole 41b, the inner diameter of the second assembling hole 41e being larger than that of the first assembling hole 41 b; when the shuffling large disk 1 and the planetary gear reducer 4 are assembled on the central shaft base 2, the power input gear 42b is positioned in the second assembling hole 41e, and meanwhile, the planet carrier body 41a is provided with a first through hole 41f for communicating the second assembling hole 41e with the planet wheel installing space 44 so that the primary reduction planetary gear 41a is meshed with the power input gear 42 b.
As shown in fig. 6 and seen in fig. 5, the card shifting device 3 includes a card shifting base 31 rotatably connected to the card shifting shaft base 25 through a bearing, the card shifting base 31 is umbrella-shaped, a third assembling hole 31a for conveniently mounting the central shaft base 2 is formed in the center of the card shifting base 31, and a plurality of card shifting strips 32 are disposed at the end edge of the flaring end of the umbrella-shaped card shifting base 31. The top surface of the poker seat 31 is also fixedly provided with an end cover 33 positioned at the end part of the central shaft seat 2 through a fastener, and the center of the end cover 33 is only provided with a fourth assembly hole position 33a for a lifting rod of a central lifting mechanism of the mahjong machine to pass through.
As shown in fig. 6, a power output gear 43b engaged with the second-stage reduction planetary gear 43a is fixedly arranged on the bottom surface of the card-setting seat 31, the power output gear 43b is positioned on the outer edge of the opening of the third assembling hole 31a, and the power output gear 43b and the second-stage reduction planetary gear 43a form a second-stage reduction transmission pair 42.
The power output gear 43b of the present embodiment is also an external gear, and during transmission, the power output gear 43b is also located at the inner ring of the secondary reduction planetary gear 43 a; in order to facilitate the meshing transmission between the two gears, an annular avoiding groove 41g for accommodating the power output gear 43b is further concavely formed in the top surface of the planet carrier body 41a, and a second through hole 41h for communicating the annular avoiding groove 41g with the planet wheel mounting space 44 so that the secondary reduction planet gear 43a is meshed with the power output gear 43b is further formed in the planet carrier body 41 a.
The working principle of the differential transmission mechanism of the mahjong shuffling large plate and the mahjong shifting device of the embodiment is as follows:
when the driving mechanism 5 drives the big shuffling disk 1 to rotate, the power input gear 42b synchronously rotates along with the big shuffling disk 1, and the planet carrier 41 and the positioning seat 23 are circumferentially positioned, so that the first-stage reduction planetary gear 42a meshed with the power input gear 42b rotates along with the power input 42a, and the first-stage reduction of the big shuffling disk 1 is realized; the second-stage reduction planetary gear 43a and the first-stage reduction planetary gear 42a rotate synchronously, and the power output gear 43b meshed with the second-stage reduction planetary gear 43a also rotates along with the second-stage reduction planetary gear 43a, so that the second-stage reduction of the shuffling large plate 1 is realized, the card poking device 3 and the power output gear 43b rotate synchronously, and finally, the differential transmission of the card poking device 3 and the shuffling large plate 2 is realized.
Example 2
The differential transmission mechanism of the mahjong shuffling large plate and the mahjong shifting device of the mahjong machine is basically the same as that of the embodiment 1, and has the following defects that: the power input gear 42b and the power output gear 43b are both internal gears, and during the operation of the planetary gear reducer 4, the power input gear 42b is located on the outer ring of the first-stage reduction planetary gear 42a, and the power output gear 43b is located on the outer ring of the second-stage reduction planetary gear 43a, so that the planet carrier body 41a of the embodiment does not need to be provided with the third central hole 41e, the annular avoiding groove 41g, the first through opening 41f and the second through opening 41 h.
Example 3
The differential transmission mechanism of the mahjong shuffling large plate and the mahjong shifting device of the mahjong machine is basically the same as that of the embodiment 1, and has the following defects that: the power input gear 42b of the present embodiment is an external gear, and the power input gear 42b is an internal gear; correspondingly, the planet carrier body 41a is only provided with the third central hole 41e and the first through opening 41f, and the annular avoiding groove 41g and the second through opening 41h are not provided.
Example 4
The differential transmission mechanism of the mahjong shuffling large plate and the mahjong shifting device of the mahjong machine is basically the same as that of the embodiment 1, and has the following defects that: the power input gear 42b of the present embodiment is an internal gear, and the power input gear 42b is an external gear; correspondingly, the planet carrier body 41a is only provided with an annular avoiding groove 41g and a second through opening 41h, and the third central hole 41e and the first through opening 41f are not provided.
Claims (10)
1. A differential transmission mechanism of a mahjong shuffling large plate and a mahjong shuffling device of a mahjong machine is characterized by comprising a central shaft seat (2) and a planetary gear reducer (4) sleeved on the periphery of the central shaft seat (2), wherein the planetary gear reducer (4) and the central shaft seat (2) are circumferentially positioned;
a primary speed reduction transmission pair (42) is arranged between the planetary gear reducer (4) and the shuffling large disc (1), and a secondary speed reduction transmission pair (43) is arranged between the planetary gear reducer (4) and the card poking device (3).
2. The differential transmission mechanism of the mahjong shuffling large plate and the mahjong shifting device of the mahjong machine according to claim 1, wherein the planetary gear reducer (4) comprises a planet carrier (41), the planet carrier (41) is provided with a first assembling hole site (41b), the central shaft seat (2) is provided with a positioning seat part (23) matched with the first assembling hole site (41 b);
the inner peripheral wall of the first assembling hole position (41b) is provided with a convex part (41c) or a concave area (21), and the outer peripheral wall of the positioning seat part (23) is provided with a concave area (21) or a convex part matched with the positioning seat part.
3. The differential transmission mechanism of the mahjong shuffling large plate and the mahjong shifting device of the mahjong machine according to claim 2, wherein at least two convex parts (41c) which are uniformly arranged around the first assembling hole site (41b) are formed on the inner peripheral wall of the first assembling hole site (41b), each convex part (41c) comprises a radial boss (41ca), and one end of the radial boss (41ca) facing to the axle center of the first assembling hole site (41b) is provided with a plurality of radial positioning latch teeth (41 cb);
the peripheral wall of the positioning seat part (23) is provided with recessed areas (21) matched with the convex parts (41c) one by one, and each recessed area (21) comprises a radial groove (21a) matched with the radial boss (41ca) and a radial positioning clamping groove (21b) matched with the radial positioning clamping tooth (41 cb).
4. The differential transmission mechanism of the mahjong shuffling large plate and the mahjong domino device of claim 3, characterized in that the depressed area (21) is provided with an opening on the top surface and the peripheral wall of the positioning seat (23), the bottom surface of the depressed area (21) forms a limit step (22), and the bottom surface of the convex part (41c) is abutted against the limit step (22);
the central shaft seat (2) is fixedly connected with a locking seat (6) positioned on the top surface of the planet carrier (41), and the locking seat (6) and the limiting step (22) form axial limiting on the planet carrier (41).
5. The differential transmission mechanism of the mahjong shuffling dial and the mahjong machine shuffling dial of claim 4, characterized in that the central shaft seat (2) is provided with an external thread seat part (24) which is arranged on the top surface of the positioning seat part (23), the external diameter of the external thread seat part (24) is smaller than that of the positioning seat part (23), and the locking seat (6) is in threaded connection with the external thread seat part (24).
6. The differential transmission mechanism of the mahjong shuffling dial and the mahjong machine shuffling dial of any claim 1 to 5, wherein the primary speed reduction transmission pair (42) comprises a primary speed reduction planetary gear (42a) which is rotationally connected with a planet carrier (41) and a power input gear (42b) which is fixedly arranged on the mahjong shuffling dial (1), and the primary speed reduction planetary gear (42a) is meshed with the power input gear (42 b);
the two-stage reduction transmission pair (43) comprises a two-stage reduction planetary gear (43a) rotationally connected to the planet carrier (41) and a power output gear (43b) fixedly arranged on the card shifting device (3), the two-stage reduction planetary gear (43a) is meshed with the power output gear (43b), and the two-stage reduction planetary gear (43a) and the one-stage reduction planetary gear (42a) are coaxially arranged.
7. The differential transmission mechanism of the mahjong shuffling large plate and the mahjong domino device of the claim 6 is characterized in that the planet carrier (41) comprises a planet carrier body (41a) provided with a first assembling hole (41b), the upper end and the lower end of the planet carrier body (41a) are provided with outward flanged edges (41d), and a planet wheel mounting space (44) used for mounting a primary speed reduction planet gear (42a) and a secondary speed reduction planet gear (43a) is formed between the two outward flanged edges (41 d).
8. The differential transmission mechanism of the mahjong shuffling large plate and the mahjong shifting device of claim 7, wherein the center of the planet carrier body (41a) is provided with a second assembling hole site (41e) communicated with the first assembling hole site (41b), and the inner diameter of the second assembling hole site (41e) is larger than that of the first assembling hole site (41 b);
the power input gear (42b) is located in the second assembling hole (41e), and a first through opening (41f) for communicating the second assembling hole (41e) with a planet wheel mounting space (44) so that the primary reduction planet gear (42a) is meshed with the power input gear (42b) is formed in the planet carrier body (41 a).
9. The differential transmission mechanism of the mahjong shuffling large plate and the mahjong shifting device of the mahjong machine according to claim 7, wherein the top surface of the planet carrier body (41a) is concavely provided with an annular avoiding groove (41g), the power output gear (43b) is positioned in the annular avoiding groove (41g), and the planet carrier body (41a) is further provided with a second through hole (41h) for communicating the annular avoiding groove (41g) with a planet wheel installation space (44) so as to facilitate the transmission of the secondary reduction planet gear (43a) and the power output end.
10. The differential transmission mechanism of the mahjong shuffling dials and shifters of claim 6, wherein there are at least two of the first reduction planetary gears (42a), and all the first reduction planetary gears (42a) are uniformly arranged on the planet carrier (41) in the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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