CN112755508B - Noise reduction system of mute mahjong machine - Google Patents
Noise reduction system of mute mahjong machine Download PDFInfo
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- CN112755508B CN112755508B CN202011562968.5A CN202011562968A CN112755508B CN 112755508 B CN112755508 B CN 112755508B CN 202011562968 A CN202011562968 A CN 202011562968A CN 112755508 B CN112755508 B CN 112755508B
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- 238000003825 pressing Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 5
- 230000000630 rising effect Effects 0.000 claims abstract description 3
- 230000005540 biological transmission Effects 0.000 claims description 32
- 239000003638 chemical reducing agent Substances 0.000 claims description 28
- 230000030279 gene silencing Effects 0.000 claims description 25
- 238000009434 installation Methods 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000007790 scraping Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
- A63F9/00—Games not otherwise provided for
- A63F9/20—Dominoes or like games; Mah-Jongg games
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
- A63F9/00—Games not otherwise provided for
- A63F9/20—Dominoes or like games; Mah-Jongg games
- A63F2009/205—Mah-jongg games
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- Engineering & Computer Science (AREA)
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Abstract
The utility model discloses a noise reduction system of a mute mahjong machine, which comprises a descent control device, wherein the descent control device comprises a jacking mechanism for driving a dice tray to ascend and descend, the periphery of the jacking mechanism is provided with a noise reduction cover which synchronously ascends and descends along with the jacking mechanism, the noise reduction cover comprises an umbrella-shaped part made of rubber materials, the umbrella-shaped part extends from the periphery of the jacking mechanism to the periphery of a shuffling large tray, and the projection radiuses of a card falling channel, the umbrella-shaped part and the shuffling large tray in the vertical direction are sequentially increased; the umbrella-shaped part is provided with a card receiving position which rises along with the rising of the jacking mechanism to receive the mahjong tiles falling from the tile falling channel, and a card pressing position which is covered on the shuffling tray along with the falling of the jacking mechanism to press the mahjong tiles and is driven by friction force between the mahjong tiles and the umbrella-shaped part to rotate circumferentially. The noise reduction cover not only can reduce or eliminate the noise generated by the mahjong tiles falling into the shuffling tray, but also can eliminate or reduce the noise generated by the mahjong tiles falling into the shuffling tray.
Description
Technical Field
The utility model belongs to the technical field of mahjong machines, and particularly relates to a noise reduction system of a mute mahjong machine.
Background
In the process that mahjong tiles are pushed into the shuffling large tray from the table top, the mahjong tiles can collide with the jacking structure of the dice tray to generate noise, and the mahjong tiles can generate larger noise after falling to the shuffling large tray due to larger drop between the table top and the shuffling large tray; meanwhile, in the process of rotating and shuffling the large shuffling tray, the mahjong tiles on the large shuffling tray are slightly pushed to collide with other mahjong tiles with larger impact force due to the fact that no pressure in any vertical direction is applied; this greatly affects the player's experience.
In order to eliminate the noise, chinese patent publication No. CN208193620U discloses a mute shuffling barrel of an automatic mahjong machine, wherein a shuffling large tray is arranged in the shuffling barrel, a scraping tray is arranged on the top surface of the shuffling large tray, and a scraping tray cover is arranged on the scraping tray; the lifting rod penetrates through the centers of the scraping disc and the scraping disc cover and extends to a shuffling table top above the shuffling large disc, and the top end of the lifting rod is fixedly connected with a dice disc through a bowl and a bracket; and the periphery of the lifting rod is also sleeved with an elastic cloth sleeve, the top end of the elastic cloth sleeve is fixed in a bracket fastening groove of the bracket through a binding belt, and the bottom end of the elastic cloth sleeve is fixed in a scraping strip disc cover fastening groove of the scraping strip disc cover through the binding belt.
However, the above-mentioned shuffling barrel has no obvious noise reduction effect, and the main reason is that: (1) The support bowl is not provided with noise reduction measures, and the mahjong tiles still collide with the support bowl to generate noise when pushed in; (2) The bottom end of the elastic cloth sleeve only wraps the strip scraping disc cover, and part of mahjong tiles can directly fall onto the strip scraping disc and the shuffling large disc to generate noise; (3) It is difficult to eliminate or reduce noise generated by the mutual impact of the mahjong tiles on the shuffling tray.
The Chinese patent application with the publication number of CN111840980A discloses a tile falling noise reduction method, a mute mahjong machine and a noise reduction fan device applied by the tile falling noise reduction method, wherein the noise reduction fan device comprises a mahjong machine tile shuffling inner barrel and noise reduction fan blades, and the noise reduction fan blades are arranged on the mahjong machine tile shuffling inner barrel and are positioned below a tile falling channel of a mahjong machine desktop assembly; namely, one end of the noise reduction fan is arranged on the inner wall of the shuffling inner barrel of the mahjong machine at intervals, and the other end of the noise reduction fan points to or/and is close to the center below the mahjong falling channel; the blades of each noise-reducing fan blade are obliquely staggered to form an elastically-supported buffering noise-reducing shuffling system for reducing the drop height of mahjong tiles falling from the tile falling channel.
The noise reduction fan blade device has the following defects: (1) The noise generated by the mahjong tile striking the bowl, the bracket and the lifting rod is difficult to eliminate or reduce; (2) It is difficult to eliminate or reduce noise generated by the mutual impact of the mahjong tiles on the shuffling tray.
It can be seen that the noise reduction measures in the existing mahjong machine are in a state of all-around, there is no noise reduction measure that can eliminate any vertical compression of the tiles on the shuffling tray, the mahjong tiles are slightly pushed to collide with other mahjong tiles with larger impact force, so that larger noise is generated.
Disclosure of Invention
The utility model aims to provide a noise reduction system of a silent mahjong machine, wherein a noise reduction cover in the noise reduction system can reduce and eliminate or reduce noise generated by mahjong tiles falling into a shuffling tray directly and noise generated by tile falling and impacting on the shuffling tray.
In order to achieve the above object, the present utility model has the following technical scheme:
the noise reduction system of the silent mahjong machine comprises a descent control device, wherein the descent control device comprises a jacking mechanism for driving a dice tray to ascend and descend, a noise reduction cover which synchronously ascends and descends along with the jacking mechanism is arranged on the periphery of the jacking mechanism, the noise reduction cover comprises an umbrella-shaped part made of rubber materials, the umbrella-shaped part extends from the periphery of the jacking mechanism to the periphery of a shuffling tray, and projection radiuses of a card falling channel, the umbrella-shaped part and the shuffling tray in the vertical direction are sequentially increased;
the umbrella-shaped part is provided with a mahjong receiving position which rises along with the rising of the jacking mechanism to receive mahjong tiles falling from the tile falling channel, and a mahjong pressing position which is covered on the large shuffling tray along with the falling of the jacking mechanism to press the mahjong tiles and is driven by friction force between the mahjong tiles and the umbrella-shaped part to rotate circumferentially.
In the noise reduction system of the mute mahjong machine, the noise reduction cover is provided with the umbrella-shaped part extending from the outer periphery of the jacking mechanism to the outer periphery of the shuffling large disc, and as the projection radius of the umbrella-shaped part in the vertical direction is larger than the projection radius of the shuffling channel in the vertical direction and smaller than the projection radius of the shuffling large disc in the vertical direction, after the mahjong on the tabletop falls from the shuffling channel, the mahjong falls onto the umbrella-shaped part positioned at the card receiving position firstly, and then rolls off from the outer edge of the umbrella-shaped part to the outer periphery of the shuffling large disc, thereby reducing the height difference of the mahjong tiles, reducing and eliminating or reducing noise generated by the fact that the mahjong tiles fall into the shuffling large disc directly, and improving the mahjong arranging efficiency because the mahjong tiles fall onto the outer periphery of the shuffling large disc directly; when all mahjong pieces fall into the big shuffling tray, the umbrella-shaped part descends along with the jacking mechanism to apply pressure to the mahjong pieces on the big shuffling tray, and when the big shuffling tray rotates, as the mahjong pieces are subjected to pressure from the umbrella-shaped part above, not only the falling noise and the noise generated by the mutual collision of the mahjong pieces can be greatly reduced, but also the umbrella-shaped part also greatly isolates the upward transmission of the shuffling noise to the upper part of the table top of the mahjong machine; meanwhile, friction exists between the umbrella-shaped part and the mahjong tiles, the umbrella-shaped part can rotate along with the large shuffling tray under the drive of the friction, and the umbrella-shaped part in the rotating state is more beneficial to eliminating impact noise generated by lodging of the mahjong tiles.
In the noise reduction system of the mute mahjong machine, at least one strip-shaped groove which extends in the radial direction and is communicated with two sides of the umbrella-shaped part is formed on the umbrella-shaped part, and the outer end of the strip-shaped groove is positioned at the outer periphery of the umbrella-shaped part. After the strip-shaped grooves are formed, mahjong tiles falling onto the umbrella-shaped parts not only can fall along the outer edges of the umbrella-shaped parts, but also can fall from the strip-shaped grooves, so that poor tile pressing effect caused by that all mahjong tiles fall on the outer edges of the umbrella-shaped parts is avoided.
In the utility model, a plurality of sector parts formed by dividing the strip-shaped grooves still maintain umbrella-shaped appearance, and adjacent sector parts do not have the condition of oblique staggering.
In the noise reduction system of the mute mahjong machine, at least one surface of the umbrella-shaped part is provided with the reinforcing protrusion at the outer edge of the opening of the strip-shaped groove, and the reinforcing protrusion radially extends from the outer end of the strip-shaped groove to the central through hole of the umbrella-shaped part along the umbrella-shaped part. Because the umbrella-shaped part is made of rubber materials, after the strip-shaped groove is formed, the supporting force of the umbrella-shaped part positioned at the edge of the opening of the strip-shaped groove on the mahjong pieces is poor; the reinforcing protrusions can improve the pressure resistance of the part, and can effectively receive mahjong pieces, so that the fallen mahjong pieces are prevented from directly passing through the strip-shaped grooves.
In the noise reduction system of the mute mahjong machine, the reinforcing protrusions are at least arranged on the umbrella surface of one side of the umbrella-shaped part, which faces the dice tray, so as to slow down the falling speed of mahjong tiles from the strip-shaped grooves to the shuffling large tray. The strengthening protrusions protruding from the surface of the umbrella-shaped part can also generate a certain blocking effect in the rolling process of the mahjong pieces, so that the falling speed of the mahjong pieces from the strip-shaped grooves or the outer edges of the umbrella-shaped parts is further slowed down.
In the noise reduction system of the mute mahjong machine, the jacking mechanism comprises a lifting rod, and the dice tray is fixedly connected with the lifting rod in sequence through a bowl and a bracket; the silencing cover also comprises a cylindrical part positioned at the periphery of the bracket, an axial limiting piece used for ensuring the synchronous lifting of the silencing cover and the bracket is arranged between the cylindrical part and the bracket, and the umbrella-shaped part is arranged at one end of the cylindrical part facing the shuffling large disc; the funnel-shaped part positioned at the periphery of the bowl is fixedly arranged at one end of the cylindrical part, which faces the dice tray, and the funnel-shaped part, the cylindrical part and the umbrella-shaped part are coaxially arranged. Therefore, the silencing cover can completely surround the jacking mechanism, and the possibility of noise generated by mutual collision of mahjong pieces and the jacking mechanism is completely eradicated. Preferably, the funnel portion, the cylindrical portion and the umbrella portion are integrally formed.
In the noise reduction system of the mute mahjong machine, the axial limiting piece comprises an annular groove formed between the support bowl and the bracket, one end of the cylindrical part, facing the funnel-shaped part, is provided with a protruding edge embedded into the annular groove, and the protruding edge is in circumferential rotation fit with the annular groove. The annular groove naturally formed between the bracket and the support bowl can be naturally used for embedding the convex edge, so that the axial limit between the silencing cover and the jacking mechanism is realized; the circumferential rotation fit between the convex edge and the annular groove enables the silencing cover to rotate along with the shuffling large disc.
The noise reduction system of the mute mahjong machine further comprises a shuffling device, wherein the shuffling device comprises a shuffling large disc and a central shaft seat arranged in the center of the shuffling large disc, the shuffling large disc is rotationally connected with the central shaft seat, the lifting rod penetrates through the center of the central shaft seat, and one end of the lifting rod penetrating through the central shaft seat is fixedly provided with the bracket;
the central shaft seat is also rotationally connected with a card poking device positioned between the shuffling large disc and the silencing cover, and is provided with a planetary gear reducer for realizing transmission between the shuffling large disc and the card poking device, and the planetary gear reducer and the central shaft seat are circumferentially positioned.
In the utility model, the shuffling large disc is integrally arranged, the shuffling large disc is not separately arranged as a lower large disc and an upper large disc, and the planetary gear reducer and the card pulling device are sequentially arranged on the top surface of the shuffling large disc, so that enough installation space is reserved for the planetary gear reducer, the planetary gear reducer can be directly installed on a central shaft seat, and the abrasion of the planetary gear reducer caused by the operation of the shuffling large disc and the card pulling device is avoided or is negligible; meanwhile, as the stress area between the planetary gear reducer and the central shaft seat is large, the planetary gear reducer can always keep stable positions, and stable and effective transmission between the shuffling large disc and the card pulling device is ensured.
In the noise reduction system of the mute mahjong machine, the planetary gear reducer comprises a planetary carrier which is positioned circumferentially with the central shaft seat and is limited axially, a primary speed reduction transmission pair is arranged between the planetary carrier and the shuffling large disc, and a secondary speed reduction transmission pair is arranged between the planetary carrier and the shuffling device;
the primary speed reduction transmission pair comprises a primary speed reduction planetary gear which is rotationally connected to the planet carrier, and a power input gear which is driven by the shuffling large disc to rotate, and the power input gear is meshed with the primary speed reduction planetary gear;
the secondary speed reduction transmission pair comprises a secondary speed reduction planetary gear which is rotatably connected to the planet carrier, and a power output gear which is fixedly arranged on the card shifter, wherein the secondary speed reduction planetary gear is meshed with the power output gear, and the secondary speed reduction planetary gear and the primary speed reduction planetary gear are coaxially arranged.
The utility model adopts the primary speed reduction transmission pair and the secondary speed reduction transmission pair, and the power of the shuffling large tray is transmitted to the card shifter through the secondary speed reduction, thereby realizing the differential transmission of the card shifter relative to the shuffling large tray. Of course, multiple reduction drives may be designed according to specific needs.
In the noise reduction system of the mute mahjong machine, the planet carrier comprises a planet carrier body with a second center hole, the inner peripheral wall of the second center hole is circumferentially positioned with the center shaft seat, two ends of the planet carrier body are respectively provided with an outward turned edge, and a planet wheel installation space for installing a primary reduction planet gear and a secondary reduction planet gear is formed between the two outward turned edges. Planet wheel installation space is set up between two outward flanges, then two outward flanges can fix a position the both ends of the center pin of one-level reduction planetary gear and second grade reduction planetary gear, and one-level reduction planetary gear and second grade reduction planetary gear operation is more stable.
In the noise reduction system of the mute mahjong machine, the shuffling large disc and the poker machine have the same rotation direction;
the center of the planet carrier body is also provided with a third center hole communicated with the second center hole, and the planet carrier body is provided with a first through hole used for communicating the third center hole with a planet wheel installation space so that the primary reduction planet gear is meshed with the power input gear;
the card pulling device comprises a card pulling seat, the center of the card pulling seat is provided with a fourth center hole for the central shaft seat to pass through, and the power output gear is convexly arranged on the bottom surface of the card pulling seat and is coaxially arranged with the fourth center hole; the top surface of the planet carrier body is concavely provided with an annular avoidance groove for accommodating the power output gear, and the planet carrier body is also provided with a second through hole which is communicated with the annular avoidance groove and the planet gear installation space so that the secondary reduction planet gear is meshed with the power output gear;
the outer periphery of the card poking seat is provided with a plurality of card poking strips extending towards the edge of the shuffling large tray, and the number of the card poking strips is less than or equal to four.
The shuffling noise of the shuffling device can be further reduced by the same-direction rotation of the shuffling large tray and the card shifter and the reduction of the number of card shifting strips.
When the card poking device and the shuffling large disc rotate in the same direction, the power input gear and the power output gear are both external gears or are both internal gears; when the two gears are external gears, the primary reduction planetary gear and the secondary reduction planetary gear are both positioned at the inner rings of the power input gear and the power output gear; the third central hole and the first through hole are arranged to ensure that the primary reduction planetary gear is meshed with the power input gear, and the annular avoidance groove and the second through hole are arranged to ensure that the secondary reduction planetary gear is meshed with the power output gear.
Compared with the prior art, the utility model has the beneficial effects that:
(1) In the noise reduction system of the mute mahjong machine, the noise reduction cover is provided with the umbrella-shaped part extending from the outer periphery of the jacking mechanism to the outer periphery of the shuffling large disc, and as the projection radius of the umbrella-shaped part in the vertical direction is larger than the projection radius of the shuffling channel in the vertical direction and smaller than the projection radius of the shuffling large disc in the vertical direction, after the mahjong on the tabletop falls from the shuffling channel, the mahjong falls onto the umbrella-shaped part positioned at the card receiving position firstly, and then rolls off from the outer edge of the umbrella-shaped part to the outer periphery of the shuffling large disc, thereby reducing the height difference of the mahjong tiles, reducing and eliminating or reducing noise generated by the fact that the mahjong tiles fall into the shuffling large disc directly, and improving the mahjong arranging efficiency because the mahjong tiles fall onto the outer periphery of the shuffling large disc directly; when all mahjong pieces fall into the big shuffling tray, the umbrella-shaped part descends along with the jacking mechanism to apply pressure to the mahjong pieces on the big shuffling tray, and when the big shuffling tray rotates, as the mahjong pieces are subjected to pressure from the umbrella-shaped part above, not only the falling noise and the noise generated by the mutual collision of the mahjong pieces can be greatly reduced, but also the umbrella-shaped part also greatly isolates the upward transmission of the shuffling noise to the upper part of the table top of the mahjong machine; meanwhile, friction exists between the umbrella-shaped part and the mahjong tiles, the umbrella-shaped part can rotate along with the large shuffling tray under the drive of the friction, and the umbrella-shaped part in the rotating state is more beneficial to eliminating impact noise generated by lodging of the mahjong tiles.
(2) In the utility model, the umbrella-shaped part of the silencing cover is also provided with the radial extending strip-shaped groove, so that mahjong tiles falling onto the umbrella-shaped part can fall along the outer edge of the umbrella-shaped part and can fall from the strip-shaped groove, thereby avoiding poor tile pressing effect caused by that all mahjong tiles fall on the outer edge of the umbrella-shaped part; meanwhile, the edge of the opening of the strip-shaped groove is also provided with a reinforcing protrusion, so that the umbrella-shaped part at the edge of the opening of the strip-shaped groove has better compressive resistance, and can effectively receive mahjong pieces, and the fallen mahjong pieces are prevented from directly passing through the strip-shaped groove; meanwhile, the reinforcing protrusions protruding out of the surface of the umbrella-shaped part can also generate a certain blocking effect in the rolling process of the mahjong pieces, so that the falling speed of the mahjong pieces from the strip-shaped grooves or the outer edges of the umbrella-shaped parts is further slowed down.
(3) According to the utility model, an axial limiting piece for ensuring synchronous lifting of the silencing cover and the bracket is arranged between the cylindrical part of the silencing cover and the bracket, the axial limiting piece comprises an annular groove formed between the bracket bowl and the bracket, one end of the cylindrical part facing the funnel-shaped part is provided with a convex edge embedded into the annular groove, and the convex edge is in circumferential rotation fit with the annular groove. The annular groove naturally formed between the bracket and the support bowl can be naturally used for embedding the convex edge, so that the axial limit between the silencing cover and the jacking mechanism is realized; the circumferential rotation fit between the convex edge and the annular groove enables the silencing cover to rotate along with the shuffling large disc.
(4) In the utility model, the shuffling large disc is integrally arranged, the shuffling large disc is not separately arranged as a lower large disc and an upper large disc, and the planetary gear reducer and the card pulling device are sequentially arranged on the top surface of the shuffling large disc, so that enough installation space is reserved for the planetary gear reducer, the planetary gear reducer can be directly installed on a central shaft seat, and the abrasion of the planetary gear reducer caused by the operation of the shuffling large disc and the card pulling device is avoided or is negligible; meanwhile, as the stress area between the planetary gear reducer and the central shaft seat is large, the planetary gear reducer can always keep stable positions, and stable and effective transmission between the shuffling large disc and the card pulling device is ensured.
(5) In the utility model, the shuffling noise of the shuffling device can be further reduced by the same-direction rotation of the shuffling large tray and the card shifter and the reduction of the number of card shifting strips.
Drawings
FIG. 1 is a schematic diagram of a noise reduction system for a mahjong machine according to the present utility model;
FIG. 2 is a schematic diagram of a noise reduction system of a mahjong machine according to the present utility model in another view angle;
FIG. 3 is a schematic diagram of an exploded structure of a noise reduction system of a mahjong machine according to the present utility model;
FIG. 4 is a schematic view of the muffler cover shown in FIG. 3;
FIG. 5 is a schematic view of the muffler cover shown in FIG. 3 in another view;
FIG. 6 is a cross-sectional view of the descent control device shown in FIG. 3;
FIG. 7 is an enlarged view of portion B of FIG. 6;
figure 8 is a schematic view of the card shuffling device shown in figure 3;
FIG. 9 is an enlarged view of portion A of FIG. 5;
fig. 10 is an exploded view of the card shuffling device of fig. 8;
FIG. 11 is a schematic view of the configuration of the planetary gear reducer shown in FIG. 10;
FIG. 12 is a schematic view of the center axle seat shown in FIG. 10;
FIG. 13 is a schematic view of the card shifter shown in FIG. 10 from another perspective;
fig. 14 is a schematic view of the planetary gear reducer shown in fig. 10 in another view.
Detailed Description
The technical scheme of the utility model is further described in detail below with reference to the attached drawings and the detailed description.
Example 1
As shown in fig. 1, 2 and 3, the noise reduction system of the mahjong machine of the embodiment comprises a slow descent device 100 and a shuffling device 200, wherein the slow descent device 100 comprises a jacking mechanism 7, and the jacking mechanism 7 comprises a lifting rod 71; as shown in fig. 10, the shuffling device 200 includes a shuffling tray 1 and a central shaft seat 2 disposed in the center of the shuffling tray 1, the shuffling tray 1 is rotatably connected with the central shaft seat 2, a lifting rod 71 is disposed in the center of the central shaft seat 2 in a penetrating manner, and a bracket 72, a bowl 73 and a dice tray are sequentially and fixedly installed from bottom to top on the lifting rod 71 penetrating the top end of the central shaft seat 2; the size of the dice tray is equivalent to that of a tile falling channel (not shown in the figure) arranged at the center of a table top of the mahjong machine. The dice tray, the bowl 73, the bracket 72 and the lifting rod 71 are all conventional structures in the art, and will not be described in detail in this embodiment.
The descent control device 100 of the present embodiment further includes a silencing cover 8, and the silencing cover 8 is fixedly disposed on the outer periphery of the jacking mechanism 7, so that the jacking mechanism 7 can be lifted and lowered synchronously. As shown in fig. 3, the silencing cover 8 of this embodiment includes an umbrella-shaped portion 81, a cylindrical portion 82 and a funnel-shaped portion 83 which are sequentially disposed from bottom to top, the umbrella-shaped portion 81, the cylindrical portion 82 and the funnel-shaped portion 83 are coaxially disposed and integrally formed, the silencing cover 8 of this embodiment is integrally made of a silica gel material, and the silencing cover 8 encloses the entire jacking mechanism 7, so that noise generated by collision between mahjong tiles on a table surface and the jacking mechanism 7 when the mahjong tiles fall from a tile falling channel is avoided.
As shown in fig. 6 and 7, an axial limiter 9 for ensuring synchronous lifting and lowering of the muffler cover 8 and the bracket 72 is provided between the cylindrical portion 82 and the bracket 72, the axial limiter 9 includes an annular groove 91 formed between the bracket bowl 73 and the bracket 72, and one end of the cylindrical portion 82 facing the funnel portion 83 has a convex edge 92 fitted into the annular groove 91. The jogged of protruding edge 92 and annular slot 91 can prevent to take place axial displacement between noise reduction cover 8 and the jacking mechanism 7, simultaneously, circumference normal running fit between protruding edge 92 and the annular slot 91, so not only the installation of noise reduction cover 8 of being convenient for, but also make noise reduction cover 8 have the ability of circumference rotation.
The funnel-shaped part 83 is attached to the bottom surface of the bowl 73, and the area covered by the funnel-shaped part 83 is larger, so that the noise reduction effect is better.
In this embodiment, the umbrella-shaped portion 81 extends from the outer periphery of the jacking mechanism 7 to the outer periphery of the large shuffling tray, and the projection radii of the card falling path, the umbrella-shaped portion 81 and the large shuffling tray in the vertical direction become larger in order. When shuffling is required, the silencing cover 8 rises along with the jacking mechanism 7, the umbrella-shaped part 81 is positioned at a card receiving position, mahjong pieces on a tabletop fall from a card falling channel and firstly fall onto the umbrella-shaped part 81, and then fall onto the outer periphery of a large shuffling tray from the outer edge of the umbrella-shaped part 81, so that the height difference of the mahjong pieces is reduced, noise generated when the mahjong pieces fall into the large shuffling tray directly can be reduced or reduced, and the mahjong pieces fall onto the outer periphery of the large shuffling tray directly, so that the card arranging efficiency can be improved; when all mahjong pieces fall into the big shuffling tray, the umbrella-shaped part 81 descends along with the jacking mechanism 7 to apply pressure to the mahjong pieces on the big shuffling tray (the umbrella-shaped part 81 is positioned at a card pressing position), and when the big shuffling tray 1 rotates, the mahjong pieces are subjected to the pressure from the umbrella-shaped part 81 above, so that not only the falling noise and the noise generated by the mutual collision of the mahjong pieces can be greatly reduced, but also the umbrella-shaped part 81 also greatly isolates the upward transmission of the shuffling noise to the upper part of the table top of the mahjong machine; meanwhile, friction exists between the umbrella-shaped part 81 and the mahjong tiles, the umbrella-shaped part 81 can rotate along with the large shuffling tray 1 under the driving of the friction, and the umbrella-shaped part in the rotating state is more beneficial to eliminating impact noise generated by lodging of the mahjong tiles.
As shown in fig. 4, 5 and 9, in the present embodiment, at least one radially extending bar-shaped groove 81a penetrating each other with both sides of the umbrella-shaped part 81 is formed on the umbrella-shaped part 81, and the outer end of the bar-shaped groove 81a is located at the outer periphery of the umbrella-shaped part 81; the umbrella surface of the umbrella-shaped part 81 facing to one side of the dice tray is also provided with a reinforcing protrusion 81b positioned at the outer edge of the opening of the strip-shaped groove 81a, and the reinforcing protrusion 81b radially extends from the outer end of the strip-shaped groove 81a to the central through hole of the umbrella-shaped part 81 along the umbrella-shaped part 81; it can be seen that the length of the reinforcing protrusion 81b is longer than the length of the bar-shaped groove 81 a.
After the strip-shaped grooves 81a are formed, mahjong tiles falling onto the umbrella-shaped parts 81 not only fall along the outer edges of the umbrella-shaped parts 81, but also fall from the strip-shaped grooves 81a, so that poor tile pressing effect caused by that all mahjong tiles fall on the outer edges of the umbrella-shaped parts is avoided. The reinforcing protrusions 81b not only enable the umbrella-shaped part 81 at the opening edge of the strip-shaped groove 81a to have better pressure resistance, but also have a certain blocking effect on the mahjong pieces, and further slow down the falling speed of the mahjong pieces from the strip-shaped groove 81 a.
As shown in fig. 10 and 12, in the present embodiment, the center shaft seat 2 is formed with a card pulling shaft seat 25, an external thread seat 24, a positioning seat 23 and a shuffling shaft seat 26 in order from top to bottom, the outer diameters of the card pulling shaft seat 25, the external thread seat 24 and the shuffling shaft seat 26 are increased in order, and the positioning seat 23 is equivalent to the outer diameter of the shuffling shaft seat 26; wherein, dial the tablet axle seat 25 and be used for installing and dial the tablet 3, shuffle axle seat 26 is used for installing and shuffle the big dish 1, and location seat 23 is used for installing and is used for realizing the planetary gear reducer 4 of the differential transmission of big dish of shuffling and dial.
As shown in fig. 10, the center of the large shuffling tray 1 has a first center hole 11, and in this first center hole 11, the large shuffling tray 1 is rotatably connected to a shuffling shaft seat 26 on the center shaft seat 2 via a bearing. As can be seen from fig. 1, 3 and 10, the shuffling tray 1 of this embodiment includes a tapered portion 12 at the center and a flat portion 13 at the outer ring, the tapered portion 12 being integrally formed with the flat portion 13.
As shown in fig. 2 and 10, in this embodiment, the shuffling large tray 1 is rotated by a variable speed driving mechanism 5; the specific structure of the variable speed driving mechanism 5 is disclosed in the chinese patent application publication No. CN111282260a, and the description of this embodiment is omitted. In short, the variable speed driving mechanism 5 includes two transmission gears 51 fixedly connected to the bottom surface of the large shuffling tray 1 and driving gears 52 corresponding to the transmission gears 51 one by one, and different combinations of the driving gears 52 and the transmission gears 51 have different speed ratios, so that when the large shuffling tray 1 is rotated by the different combinations of the driving gears 52 and the transmission gears 51, the rotation speed of the large shuffling tray 1 is different. As can be seen from fig. 2, in this embodiment, the gear rings of the two transmission gears 51 are disposed opposite to each other, and the two driving gears 52 are driven by the same shuffling motor 53, and each driving gear 52 is unidirectionally driven by the shuffling motor 53.
As shown in fig. 3 and 10, the top surface of the shuffling large tray 1 is provided with a card pulling device 3, the card pulling device 3 comprises a card pulling seat 31 rotatably connected with a card pulling shaft seat portion 25 of a central shaft seat 2 through a bearing, the card pulling seat 31 is umbrella-shaped, a fifth central hole 31a which is convenient for installing the card pulling shaft seat portion 25 is formed in the center of the card pulling seat 31, and a plurality of card pulling strips 32 are arranged at the edge of the flaring end of the umbrella-shaped card pulling seat 31. The top surface of the playing card holder 31 is also fixedly provided with an end cover 33 at the end of the central shaft seat 2 by a fastener, and the center of the end cover 33 is only provided with a fourth central hole 33a which is convenient for the lifting rod 71 to pass through.
In the embodiment, the card pulling device 3 is driven by a planetary gear reducer 4 and a card shuffling large disc 1, a primary reduction driving pair 42 is arranged between the planetary gear reducer 4 and the card shuffling large disc 1, and a secondary reduction driving pair 43 is arranged between the planetary gear reducer 4 and the card pulling device 3; so that the power of the shuffling large disc 1 is transmitted to the card shifter 3 through the planetary gear reducer 4 in a speed reducing way, and the card shifter 3 are in differential transmission.
As shown in fig. 11 and 12, in combination with fig. 10, the planetary gear reducer 4 includes a carrier 41 circumferentially positioned with the positioning seat portion 23 of the center shaft seat 2, the carrier 41 includes a carrier body 41a having a second center hole 41b, three projections 41c are formed on an inner peripheral wall of the second center hole 41b, and three recess areas 21 adapted thereto are formed on an outer peripheral wall of the positioning seat portion 23. When the carrier 41 is mounted on the positioning seat 23, the protruding portions 41c are fitted into the corresponding recessed areas 21, forming circumferential positioning of the carrier 41.
As can be seen in fig. 11 and 12, each of the projections 41c of the planet carrier body 41a includes a radial boss 41ca, and the radial boss 41ca has a plurality of radial positioning latches 41cb at an end facing the axis of the second central hole 41 b; correspondingly, each concave area 21 of the positioning seat 23 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.
When the planet carrier 41 is mounted on the positioning seat 23, the nested radial boss 41ca and radial groove 21a, radial positioning latch 41cb and radial positioning latch 21b form a double circumferential positioning of the planet carrier 41, while the bottom surfaces of the radial groove 21a and radial positioning latch 41cb naturally form a limit step 22 under the planet carrier 41; and the locking seat 6 above the planet carrier 41 is arranged on the external thread seat 24 in a threaded manner, and the locking seat 6 cooperates with the limiting step 22 to limit the axial position of the planet carrier 41 on the central shaft seat 2.
As shown in fig. 10 and 11 and 14, the planet carrier body 41a is provided at both ends with turned-out rims 41d, and a planet wheel mounting space 44 is formed between the turned-out rims 41 d. Three primary reduction planetary gears 42a are uniformly arranged in the inner circumference of the planetary gear installation space 44, and two ends of a central shaft of each primary reduction planetary gear 42a are respectively in running fit with corresponding flanging 41 d; one of the primary reduction planets 42a is also fixedly coupled to a secondary reduction planet 43a.
As shown in fig. 10, a power input gear 42b meshed with each primary reduction planetary gear 42a is fixed to the top surface of the large shuffling tray 1, and the power input gear 42b and the primary reduction planetary gears 42a constitute a primary reduction gear pair 42. As shown in fig. 7 in combination with fig. 11, 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 in transmission; in order to facilitate the engagement of the power input gear 42b with the primary reduction planetary gear 42a, the center of the planet carrier body 41a is further formed with a third center hole 41e communicating with the second center hole 41b, the third center hole 41e having an inner diameter larger than that of the second center hole 41b, and the power input gear 42b being located in the third center hole 41e when the large shuffling tray 1 and the planetary gear reducer 4 are both assembled to the center hub 2; the carrier body 41a is formed with a first through-hole 41f for communicating the third center hole 41e and the planetary gear installation space 44 so that the primary reduction planetary gear 42a meshes with the power input gear 42 b.
As shown in fig. 11 and 13, the bottom surface of the card holder 31 is integrally formed with a power output gear 43b engaged with the secondary reduction planetary gear 43a, the power output gear 43b being located at the opening outer edge of the fifth center hole 31a, the power output gear 43b and the secondary reduction planetary gear 43a constituting the secondary reduction gear pair 43. The power output gear 43b of the present embodiment is also an external gear, and the power output gear 43b is also positioned at the inner ring of the secondary reduction planetary gear 43a at the time of transmission; in order to facilitate the engagement transmission of the two, the top surface of the planet carrier body 41a is further concavely provided with an annular avoidance groove 41g for accommodating the power output gear 43b, and the planet carrier body 41a is further formed with a second through hole 41h for communicating the annular avoidance groove 41g with the planet wheel installation space 44 so that the secondary reduction planet gear 43a is engaged with the power output gear 43 b.
Since the power input gear 42b and the power output gear 43b are both external gears, in this embodiment, the card skimmer 3 rotates in the same direction as the shuffling tray 1, and shuffling noise is greatly reduced. To further reduce shuffling noise, the number of playing bars 32 may also be reduced to four or less.
The working principle of the noise reduction system of the mute mahjong machine is as follows:
when shuffling is needed, a player operates the dice trays, and the jacking mechanism 7 ascends to lift the dice trays from the card falling port of the tabletop so as to expose the card falling channel; simultaneously, the silencing cover 8 and the jacking mechanism 7 ascend synchronously to reach the license plate receiving position; the mahjong tiles on the table top are pushed into the tile falling channel by a player, the mahjong tiles cannot directly strike the supporting bowl 73 and the bracket 72 under the protection of the funnel-shaped part 83 and the cylindrical part 82, and the mahjong tiles cannot directly fall onto the large shuffling tray 1 under the bearing of the umbrella-shaped part 81, but fall onto the umbrella-shaped part 81 firstly, then roll down from the outer edge of the umbrella-shaped part 81 or roll down from each strip-shaped groove 81a, and finally fall onto the large shuffling tray 1; after all mahjong pieces fall onto the shuffling large tray 1, the jacking mechanism 7 descends, so that the dice tray returns to the mahjong piece falling port of the tabletop again; the silencing cover also descends synchronously along with the jacking mechanism to cover the shuffling large disc 1 to reach the card pressing position;
starting shuffling; in the front shuffling stage, the variable speed driving mechanism 5 drives the large shuffling tray 1 to rotate slowly, the power input gear 42b distributes the power of the large shuffling tray 1 to the secondary reduction planetary gear 43a in a speed reducing manner through the primary reduction transmission pair 42, and the power of the secondary reduction planetary gear is distributed to the poker machine 3 in a speed reducing manner through the secondary reduction transmission pair 43, so that the poker machine 3 rotates in the same direction and at a differential speed relative to the large shuffling tray 1, and the difference of the rotational speeds of the two is small in the process, so that a large number of mahjong tiles on the top surface of the large shuffling tray 1 can be shifted in time;
in the later shuffling period, the variable speed driving mechanism 5 drives the large shuffling tray 1 to rotate rapidly, the power input gear 42b distributes the power of the large shuffling tray 1 to the secondary reduction planetary gear 43a in a speed reducing manner through the primary reduction transmission pair 42, and the power of the secondary reduction planetary gear is distributed to the poker machine 3 in a speed reducing manner through the secondary reduction transmission pair 43, so that the poker machine 3 rotates in the same direction and at a different speed relative to the large shuffling tray 1, and the rotating speed difference between the two is larger in the process, which is suitable for the situation that only a small amount of mahjong pieces are left on the large shuffling tray 1 without high-frequency poker;
in the rotation process of the shuffling large tray 1, the silencing cover 8 can synchronously rotate under the driving of friction force between the umbrella-shaped part 81 and mahjong pieces, and the umbrella-shaped part 81 applies pressure to the mahjong pieces on the shuffling large tray, so that the phenomenon that the mahjong pieces are rapidly fallen down after being stirred and are strongly impacted with other mahjong pieces to generate noise is avoided.
Example 2
The noise reduction system of the mahjong machine is basically the same as that of the embodiment 1, and is different in that: the power input gear 42b and the power output gear 43b are both internal gears, and in the running process of the planetary gear reducer 4, the power input gear 42b is located at the outer ring of the primary reduction planetary gear 42a, and the power output gear 43b is located at the outer ring of the secondary reduction planetary gear 43a, so that the third central hole 41e, the annular avoidance groove 41g, the first through hole 41f and the second through hole 41h are not required to be provided on the planet carrier body 41a in this embodiment. In this embodiment, the card shooter 3 and the large shuffling tray 1 are rotated in the same direction as in embodiment 1.
Claims (7)
1. The noise reduction system of the silent mahjong machine comprises a descent control device (100), wherein the descent control device (100) comprises a jacking mechanism (7) for driving a dice disc to ascend and descend, and a silencing cover (8) which ascends and descends synchronously with the jacking mechanism (7) is arranged on the periphery of the jacking mechanism (7), and the noise reduction system is characterized in that the silencing cover (8) comprises an umbrella-shaped part (81) made of rubber materials, the umbrella-shaped part (81) extends from the periphery of the jacking mechanism (7) to the outer periphery of a large shuffling disc (1), and a card falling channel, the umbrella-shaped part (81) and the projection radius of the large shuffling disc (1) in the vertical direction are sequentially enlarged;
the umbrella-shaped part (81) is provided with a card receiving position which rises along with the rising of the jacking mechanism (7) to receive the mahjong tiles falling from the tile falling channel, and a card pressing position which is covered on the shuffling tray (1) along with the falling of the jacking mechanism (7) to press the mahjong tiles and is driven by friction force between the mahjong tiles and the umbrella-shaped part to rotate circumferentially;
the silencing cover (8) further comprises a cylindrical part (82) positioned at the periphery of the bracket (72), and an axial limiting piece (9) for ensuring synchronous lifting of the silencing cover (8) and the bracket (72) is arranged between the cylindrical part (82) and the bracket (72);
the axial limiting piece (9) comprises an annular groove (91) formed between the supporting bowl (73) and the bracket (72), one end of the cylindrical part (82) facing the funnel-shaped part (83) is provided with a convex edge (92) embedded into the annular groove (91), and the convex edge (92) is in circumferential rotation fit with the annular groove (91);
the noise reduction system also comprises a shuffling device (200), the shuffling device (200) comprises a shuffling large disc (1) and a central shaft seat (2) arranged in the center of the shuffling large disc (1), the shuffling large disc (1) is rotationally connected with the central shaft seat (2), a lifting rod (71) is arranged in the center of the central shaft seat in a penetrating way, and one end of the lifting rod (71) penetrating through the central shaft seat is fixedly provided with a bracket (72);
the novel card shuffling machine is characterized in that a card shuffling device (3) arranged between the card shuffling large disc (1) and the silencing cover is further rotationally connected to the central shaft seat (2), a planetary gear reducer (4) used for realizing transmission between the card shuffling large disc (1) and the card shuffling device (3) is arranged on the central shaft seat (2), and the planetary gear reducer (4) and the central shaft seat (2) are circumferentially positioned.
2. The noise reduction system of the mute mahjong machine as claimed in claim 1, wherein at least one strip-shaped groove (81 a) extending in the radial direction and communicated with both sides of the umbrella-shaped part (81) is formed on the umbrella-shaped part (81), and the outer end of the strip-shaped groove (81 a) is positioned at the outer periphery of the umbrella-shaped part (81).
3. The noise reduction system of the mute mahjong machine as claimed in claim 2, wherein a reinforcing protrusion (81 b) is arranged on at least one surface of the umbrella-shaped part (81) and positioned at the outer edge of the opening of the strip-shaped groove (81 a), and the reinforcing protrusion (81 b) extends from the outer end of the strip-shaped groove (81 a) to the central through hole of the umbrella-shaped part (81) along the radial direction of the umbrella-shaped part (81).
4. A noise reduction system of a mute mahjong machine as claimed in any one of claims 1 to 3, wherein said jacking mechanism (7) comprises a lifting rod (71), said dice tray being fixedly connected with the lifting rod (71) in sequence by a bowl (73) and a bracket (72);
the umbrella-shaped part (81) is arranged at one end of the cylindrical part (82) facing the big shuffling tray (1);
the funnel-shaped part (83) positioned at the periphery of the bowl (73) is further fixedly arranged at one end of the cylindrical part (82) facing the dice tray, and the funnel-shaped part (83), the cylindrical part (82) and the umbrella-shaped part (81) are coaxially arranged.
5. The noise reduction system of the mute mahjong machine as claimed in claim 1, wherein the planetary gear reducer (4) comprises a planetary carrier (41) which is positioned circumferentially with the central shaft seat (2) and limited axially, a primary reduction transmission pair (42) is arranged between the planetary carrier (41) and the shuffling large disc (1), and a secondary reduction transmission pair (43) is arranged between the planetary carrier (41) and the card poking device (3);
the primary speed reduction transmission pair (42) comprises a primary speed reduction planetary gear (42 a) rotatably connected to the planet carrier (41) and a power input gear (42 b) driven by the shuffling large disc (1) to rotate, and the power input gear (42 b) is meshed with the primary speed reduction planetary gear (42 a);
the secondary speed reduction transmission pair (43) comprises a secondary speed reduction planetary gear (43 a) rotatably connected to the planet carrier (41) and a power output gear (43 b) fixedly arranged on the card shifter (3), the secondary speed reduction planetary gear (43 a) is meshed with the power output gear (43 b), and the secondary speed reduction planetary gear (43 a) and the primary speed reduction planetary gear (42 a) are coaxially arranged.
6. The noise reduction system of the mute mahjong machine as claimed in claim 5, wherein the planet carrier (41) comprises a planet carrier body (41 a) with a second central hole (41 b), the inner peripheral wall of the second central hole (41 b) is circumferentially positioned with the central shaft seat (2), both ends of the planet carrier body (41 a) are provided with outward flanges (41 d), and a planet wheel installation space (44) for installing a primary reduction planet gear (42 a) and a secondary reduction planet gear (43 a) is formed between the two outward flanges (41 d).
7. The noise reduction system of a silent mahjong machine according to claim 6, wherein said shuffling tray (1) and said tile shifter (3) have the same rotation direction;
the center of the planet carrier body (41 a) is also provided with a third center hole (41 e) communicated with the second center hole (41 b), and the planet carrier body (41 a) is provided with a first through hole (41 f) used for communicating the third center hole (41 e) with a planet wheel installation space (44) so that the primary reduction planet gear (42 a) is meshed with the power input gear (42 b);
the card pulling device (3) comprises a card pulling seat (31), a sixth central hole for the central shaft seat (2) to pass through is formed in the center of the card pulling seat (31), and the power output gear (43 b) is convexly arranged on the bottom surface of the card pulling seat (31) and is coaxially arranged with the sixth central hole; the top surface of the planet carrier body (41 a) is concavely provided with an annular avoidance groove (41 g) for accommodating a power output gear (43 b), and the planet carrier body (41 a) is also provided with a second through hole (41 h) which is communicated with the annular avoidance groove (41 g) and a planet wheel installation space (44) so as to facilitate the meshing of the secondary reduction planet gear (43 a) and the power output gear (43 b);
the outer periphery of the card poking seat (31) is provided with a plurality of card poking strips (32) extending towards the edge of the card shuffling large tray (1), and the number of the card poking strips (32) is less than or equal to four.
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