CN110237525A - The big disc mechanism of board item and mute mahjong machine are dialled in rotation - Google Patents
The big disc mechanism of board item and mute mahjong machine are dialled in rotation Download PDFInfo
- Publication number
- CN110237525A CN110237525A CN201810196611.6A CN201810196611A CN110237525A CN 110237525 A CN110237525 A CN 110237525A CN 201810196611 A CN201810196611 A CN 201810196611A CN 110237525 A CN110237525 A CN 110237525A
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- Prior art keywords
- deep bid
- big
- bearing
- board
- gear
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Classifications
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- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multimedia (AREA)
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Abstract
The big disc mechanism of board item is dialled in rotation, including dialling board device, bearing block, upper deep bid and lower deep bid, board device is dialled to be installed on upper bearing (metal), upper bearing (metal) is loaded on bearing block top, upper deep bid is installed on lower deep bid by mounting hole, and lower deep bid is installed on lower bearing, and lower bearing is loaded on bearing block lower part, planet carrier and planetary gear set are installed in the middle part of bearing block, dials and big centre wheel is installed on board device；Big centre wheel is engaged with planetary gear set；Sun gear is installed on lower deep bid；Lower deep bid is equipped with power transmission gear, and power transmission gear is engaged with the driving gear being set on deep bid motor shaft；Planetary gear set is engaged with sun gear；Planetary gear set is made of at least one planetary gear, and each planetary gear in planetary gear set successively engages.The invention also includes mute mahjong machines.The configuration of the present invention is simple, reliable operation, reason board speed is fast, unreasonable board dead angle, and reason board noise is lower.
Description
Technical field
The present invention relates to a kind of rotations to dial the big disc mechanism of board item and mute mahjong machine.
Background technique
The big disc mechanism of existing mahjong machine includes shuffle deep bid and deep bid bearing block；Bearing block upper and lower ends further respectively have
Hole location is installed, board item or/and group board item seat are dialled for fixing mahjong machine in upper installing hole position, and lower installation hole location is for consolidating bearing block
Due on mah-jong machine baseboard；It is wherein the peripheral fixation hole of deep bid bearing among deep bid, for being embedded in installation deep bid bearing；Deep bid
Deep bid driving cog is equipped in the middle part of lower section；Flange is horizontality among deep bid；It is existing for the rotation for guaranteeing deep bid level levelling
It is designed with 4-8 deep bid turning rolls and deep bid back-up roller wheel below mahjong machine deep bid, to be supported on big plate edge；The turning rolls
It is fixed on mah-jong machine baseboard with back-up roller wheel；Big coil motor driving wheel tooth is installed on deep bid motor shaft, is responsible for motor
Power passes to deep bid driving cog；--- -- motor active gear teeth rotation --- -- passes to working principle are as follows: deep bid motor power
Deep bid driving cog, that is, deep bid rotation；
Deep bid, which is shuffled, does not register the license dead angle usually from the installation site for dialling board item and board turning magnet, but the position must be according to board
Size is adjusted, so mounting technique standard disunity, installation quality are not easy control.
Mahjong machine shuffles noise mostly from mah-jong pieces mutually hit the noise of generation in deep bid when shuffling, and makes an uproar to reduce
Sound, part mahjong machine producer just reduces reason board noise by reducing the revolving speed of big coil motor, and reduces reason board speed simultaneously
Degree, both reason board speed and reason board noise can not meet the needs of market simultaneously.
Summary of the invention
The technical problem to be solved by the present invention is to it is simple to overcome the deficiencies of the prior art and provide a kind of structure, and reason board is made an uproar
The big disc mechanism of board item and mute mahjong machine are dialled in the lower rotation of sound.
The technical solution adopted by the present invention to solve the technical problems is: including dialling board device, bearing block, upper deep bid and lower big
Disk is dialled board device and is installed on upper bearing (metal), and upper bearing (metal) is loaded on bearing block top, and upper deep bid is installed on lower deep bid by mounting hole,
Lower deep bid is installed on lower bearing, and lower bearing is loaded on bearing block lower part, is equipped with planet carrier and planetary gear set in the middle part of bearing block, is dialled
Big centre wheel is installed on board device；Big centre wheel is engaged with planetary gear set；Sun gear is installed on lower deep bid；Lower deep bid is equipped with
Power transmission gear, power transmission gear are engaged with the driving gear being set on deep bid motor shaft；Planetary gear set is nibbled with sun gear
It closes；Planetary gear set is made of at least one planetary gear, and each planetary gear in planetary gear set successively engages.
Further, dialling board device includes dialling board item, dialling card holders, big center wheel gear, dials board item and is fixed on group card holders top, dials
Board installation number is more than or equal to 1, dials card holders center and is equipped with upper bearing (metal) fixation hole, dials the upper bearing (metal) fixation hole that card holders passes through center
It is installed on upper bearing (metal), big center wheel gear, which is fixed on, dials card holders lower part；Lower deep bid includes lower deep bid leaf and lower big plate rail, lower big
Disk leaf is fixed in the middle part of lower big plate rail, and lower big plate rail top is equipped with sun gear, and lower big plate rail center is equipped with lower bearing fixation hole,
Lower deep bid is installed on lower bearing by the lower bearing fixation hole at lower big plate rail center.
Further, planetary gear is single-stage planetary wheel or two-stage planet wheel, and single-stage planetary wheel is provided only with a gear ring；Twin-stage row
Star-wheel includes bull gear and small gear ring, and bull gear and the superposition of small gear ring are fixed.
Further, power transmission gear is set to the edge of lower deep bid page.
Further, power transmission gear is set to the periphery of lower big plate rail.
Further, power transmission gear is set to the edge of lower deep bid page between the periphery of lower big plate rail.
Further, the quantity of power transmission gear is two, and one of power transmission gear is set to the outer of lower big plate rail
Week, another power transmission gear are set to the edge of lower deep bid page.
Further, the quantity of power transmission gear is two, and one of power transmission gear is set to the side of lower deep bid page
For edge between the periphery of lower big plate rail, another power transmission gear is set to the edge of lower deep bid page.
Further, the bearing block includes top chock and step, in the center and step of top chock
The heart is equipped with interconnected through-hole, dials board device and is installed on top chock by upper bearing (metal), lower deep bid is installed on by lower bearing
On step, planet carrier is installed on top chock and step linking part.
Further, the top of the top chock is equipped with the upper bearing (metal) retainer ring being located above upper bearing (metal)；The step
Lower part be equipped be located at lower bearing below lower bearing retainer ring；The upper surface of the top chock is equipped with upper installing hole, lower bearing
The lower end surface of seat is equipped with lower mounting hole.
Further, the lower deep bid leaf of the lower deep bid is in a horizontal state placement, and upper deep bid is in umbrella, upper big plate edge inclination
Downwards, upper deep bid and lower deep bid are leaf at disk shape of shuffling flat outside convexity.
Further, 1 idler wheel supported above is installed above the planet carrier.
Mute mahjong machine, including rotate dial the big disc mechanism of board item as previously described, the bottom plate of mahjong machine passes through big disc mechanism
Lower mounting hole and big disc mechanism are connected；The operation panel central elevating mechanism of mahjong machine passes through top chock central through hole and lower bearing
Seat central through hole.
3-8 deep bid back-up roller wheel is equipped with below the lower deep bid leaf of lower deep bid, deep bid back-up roller wheel passes through deep bid turning rolls
It is fixed on the bottom plate of mahjong machine.
The configuration of the present invention is simple, reliable operation.Using the present invention, board item is dialled with the rotation of board device is dialled, dials board item and board turning
The installation site that magnet is not fixed, eliminate deep bid register the license dead angle and card dial board phenomenon, and dial board revolving speed be slower than
Deep bid and lower big disk rotating speed, convenient for reducing when mahjong machine is shuffled, mah-jong pieces mutually hit probability in deep bid and mahjong machine shuffles and makes an uproar
Sound, in favor of accelerating to manage board speed.
Detailed description of the invention
Fig. 1 is the overall structure diagram that the big disc mechanism of board item is dialled in rotation shown in embodiment 1；
Fig. 2 is the bearing block structure schematic diagram that the big disc mechanism of board item is dialled in rotation shown in embodiment 1；
Fig. 3 is the group that the lower deep bid of the big disc mechanism of board item, planetary gear, sun gear, big center wheel gear are dialled in rotation shown in embodiment 1
Fill schematic diagram；
Fig. 4 is the structural schematic diagram for the lower deep bid that the big disc mechanism of board item is dialled in rotation shown in embodiment 1；
Fig. 5 is the structural schematic diagram for the upper deep bid that the big disc mechanism of board item is dialled in rotation shown in embodiment 1；
Fig. 6 is the structural schematic diagram for dialling board device that the big disc mechanism of board item is dialled in rotation shown in embodiment 1；
Fig. 7 is that schematic diagram below the overall structure of the big disc mechanism of board item is dialled in rotation shown in embodiment 1；
Fig. 8 is the overall structure diagram that the big disc mechanism of board item is dialled in rotation shown in embodiment 2；
Fig. 9 is the overall structure diagram that the big disc mechanism of board item is dialled in rotation shown in embodiment 3；
Figure 10 is the overall structure diagram that the big disc mechanism of board item is dialled in rotation shown in embodiment 4；
Figure 11 is the overall structure diagram that the big disc mechanism of board item is dialled in rotation shown in embodiment 5；
Figure 12 is the overall structure elevational schematic view that the big disc mechanism of board item is dialled in rotation shown in embodiment 6；
Figure 13 is the overall structure schematic top plan view that the big disc mechanism of board item is dialled in rotation shown in embodiment 6.
In figure: 1 --- bearing block；1-1 --- top chock；1-2 --- step；2 --- upper deep bid；2-1——
Upper deep bid mounting hole；3 --- lower deep bid；3-1 --- lower deep bid leaf；3-2 --- lower big plate rail；3-3 --- lower bearing fixation hole；
4 --- upper bearing (metal)；5 --- lower bearing；6 --- sun gear；7 --- planetary gear set；8 --- dial board device；8-1 --- upper bearing (metal)
Fixation hole；8-2 --- dial board item；9 --- big center wheel gear；10 --- power transmission gear；11 --- driving gear；
12 --- planet carrier；13 --- bearing retainer ring；14 --- bearing block mounting hole；15 --- back-up roller wheel.
Specific embodiment
Below in conjunction with drawings and examples, the invention will be further described.
Embodiment 1:
Referring to Fig.1-7, the big disc mechanism of board item, including bearing block 1, group board device 8, upper deep bid 2 and lower deep bid 3, upper deep bid 2 are dialled in rotation
It is fixed on lower 3 top of big plate rail, 8 center of board device is dialled and is equipped with upper bearing (metal) fixation hole 8-1,8 top of board device is dialled and group board 8- is installed
2, it dials 8 lower part of board device and big central gear 9 is installed, dial board device 8 and be installed on upper bearing (metal) 4 by upper bearing (metal) fixation hole 8-1, upper axis
4 are held loaded on 1 top of bearing block, lower deep bid 3 includes lower deep bid leaf 3-1 and lower big plate rail 3-2, and lower deep bid leaf 3-1 is fixed on lower big
In the middle part of plate rail 3-2, the lower center big plate rail 3-2 is equipped with lower bearing fixation hole 3-3, and lower deep bid 3 passes through under the lower center big plate rail 3-2
Bearing fixation hole 3-3 is installed on lower bearing 5, and lower bearing 5 is loaded on 1 lower part of bearing block, is equipped with planet carrier in the middle part of bearing block 1
12, planetary gear set 7 is installed on planet carrier 12, big central gear 9 is engaged with planetary gear set 7；Down the top of big plate rail be equipped with
The sun gear 6 that planetary gear set 7 engages, lower big plate rail lower part is equipped with power transmission gear 10, power transmission gear 10 and set on big
Driving gear 11 on coil motor axis engages.
In the present embodiment, power transmission gear 10 is set to the periphery of lower big plate rail 3-1.
The bearing block 1 includes top chock 1-1 and step 1-2, the center of top chock 1-1 and step 1-
2 center is equipped with interconnected through-hole, dials board device 8 and is installed on top chock 1-1 by upper bearing (metal) 4, under lower deep bid 3 passes through
Bearing 5 is installed on step 1-2, and planet carrier 12 is installed on top chock 1-1 and step 1-2 linking part.
The top of the top chock 1-1 is equipped with the bearing retainer ring 13 for being located at 4 top of upper bearing (metal), in favor of avoiding upper bearing (metal)
4 fall off from top chock 1-1.The lower part of the step 1-2 is equipped with the bearing retainer ring 13 for being located at 5 lower section of lower bearing, with benefit
In avoiding lower bearing 5 from falling off from step 1-2.
The upper surface of the top chock 1-1 is equipped with mounting hole 14, and the lower end surface of step 1-2 is equipped with mounting hole 14.
The lower deep bid leaf 3-1 of the lower deep bid 3 is in a horizontal state placement, and the upper deep bid leaf 2-1 of upper deep bid 2 is in umbrella, on
Diagonally downward, upper deep bid leaf 2-1 and lower deep bid leaf 3-1 form disk shape of shuffling flat outside convexity at the edge deep bid leaf 2-1.
In the present embodiment, planetary gear set 7 is only made of a planetary gear.Planetary gear is twin-stage grade planetary gear, is provided only with one
A small gear ring is on top, and bull gear is in lower part.
Working principle:
Start big coil motor, big coil motor drives driving gear 11 to rotate by axis, and the rotation drive of driving gear 11 is nibbled with it
The power transmission gear 10 of conjunction rotates, and the rotation of power transmission gear 10 drives lower deep bid 3 to rotate, and the rotation of lower deep bid 3 drives
The rotation of sun gear 6, then planetary gear set 7 is driven to rotate, while 7 own rotation of planetary gear set and driving the big center ratcheting with it
Gear 9 rotates simultaneously, then dials board device 8 and drives group board 8-2 rotation.Since planetary gear set 7 converts the rotation of sun gear 6 to
Own rotation and the rotation for driving group board device 8 simultaneously, that is to say, that the power reduction of speed of lower deep bid 3, which is distributed to, dials board device 8, so
Drive the revolving speed for dialling board 8-2 of rotation lower than the lower deep bid leaf 3- directly driven by power transmission gear 10 by dialling board device
1 revolving speed, therefore may make that group board item follows deep bid and the rotation of lower deep bid and revolving speed is slower than deep bid 2 and lower 3 revolving speed of deep bid.
Embodiment 2:
The present embodiment the difference from embodiment 1 is that:
Referring to Fig. 8, power transmission gear 10 is set to the edge of lower deep bid page between the periphery of lower big plate rail.
Remaining is the same as embodiment 1.
Embodiment 3:
The present embodiment the difference from embodiment 1 is that:
Referring to Fig. 9, power transmission gear is set to the edge of lower deep bid page.12 upper surface of planet carrier is equipped with greatly idler wheel
15, in favor of avoiding upper deep bid 2 and planetary gear 7 and planet carrier 12 that direct friction occurs.The idler wheel number being installed on planet carrier 12
Amount can be 1-12, and the present embodiment selects 3.
Remaining is the same as embodiment 1.
Embodiment 4:
The present embodiment the difference from embodiment 1 is that:
Referring to Fig.1 0, the quantity of power transmission gear 10 is two, and one of power transmission gear 10 is set to lower big plate rail 3-2
Periphery.Another power transmission gear 10 is set to the edge of lower deep bid leaf 3-1.
Remaining is the same as embodiment 1.
Embodiment 5:
The present embodiment the difference from embodiment 1 is that:
Referring to Fig.1 1, the quantity of power transmission gear 10 is two, the edge of the lower deep bid page of one of power transmission gear 10
To between the periphery of lower big plate rail, another power transmission gear 10 is set to the edge of lower deep bid leaf 3-1.
Remaining is the same as embodiment 1.
Embodiment 6:
The present embodiment the difference from embodiment 1 is that:
2-13 referring to Fig.1 is equipped with 3 planetary gears on the planet carrier, wherein 2 single layer planetary gears, the double-deck planetary gear.
Remaining is the same as embodiment 1.
Embodiment 7:
Mute mahjong machine, including rotate dial the big disc mechanism of board item as previously described, the bottom plate (not shown) of mahjong machine passes through big
The lower mounting hole and big disc mechanism of disc mechanism are connected；The operation panel central elevating mechanism (not shown) of mahjong machine passes through upper axis
Hold a 1-1 central through hole and step 1-2 central through hole.
3-8 deep bid back-up roller wheel (not shown), deep bid back-up roller are equipped with below the lower deep bid leaf 3-1 of lower deep bid 3
Wheel is fixed in the bottom plate (not shown) of mahjong machine by deep bid turning rolls (not shown).
Start big coil motor (not shown), big coil motor drives driving gear 11 to rotate by axis, driving gear 11
Rotation drive the power transmission gear 10 that engages to rotate,
The rotation of power transmission gear 10 drives lower deep bid 3 to rotate, and the rotation of lower deep bid 3 drives sun gear 6 to rotate, that is, drives row
Star-wheel group 7 rotates, while 7 own rotation of planetary gear set and driving and dial board device 8 and rotate simultaneously, and the rotation for dialling board device 8 drives group board
8-2 rotation.Since lower deep bid 3 is converted own rotation and the simultaneously rotation of drive group board device 8 by planetary gear set 7,
That is, the power reduction of speed of lower deep bid 3, which is distributed to, dials board device 8, so driving what is rotated to dial board 8-2's by dialling board device 8
Revolving speed of the revolving speed lower than the lower deep bid leaf 3-1 directly driven by power transmission gear 10, therefore it is slow to form group board 8-2 revolving speed
In upper deep bid 2 and lower 3 revolving speed of deep bid, deep bid reason board dead angle is avoided, while convenient for reducing fiber crops in deep bid when mahjong machine is shuffled
Board mutually hits to probability and mahjong machine is shuffled noise, in favor of accelerating to manage board speed.
Claims (10)
1. the big disc mechanism of board item is dialled in rotation, which is characterized in that including dialling board device, bearing block, upper deep bid and lower deep bid, dial board device peace
Loaded on upper bearing (metal), upper bearing (metal) is loaded on bearing block top, and upper deep bid is installed on lower deep bid by mounting hole, and lower deep bid is installed on
On lower bearing, lower bearing is loaded on bearing block lower part, is equipped with planet carrier and planetary gear set in the middle part of bearing block, dials and is equipped on board device
Big centre wheel；Big centre wheel is engaged with planetary gear set；Sun gear is installed on lower deep bid；Lower deep bid is equipped with power transmission tooth
Wheel, power transmission gear are engaged with the driving gear being set on deep bid motor shaft；Planetary gear set is engaged with sun gear；Planetary gear set
It is made of at least one planetary gear, each planetary gear in planetary gear set successively engages.
2. the big disc mechanism of board item is dialled in rotation according to claim 1, which is characterized in that dialling board device includes dialling board item, dialling board
Frame, big center wheel gear dial board item and are fixed on group card holders top, dial card holders center and are equipped with upper bearing (metal) fixation hole, dial card holders and pass through
The upper bearing (metal) fixation hole at center is installed on upper bearing (metal), and big center wheel gear, which is fixed on, dials card holders lower part；Lower deep bid includes lower big
Disk leaf and lower big plate rail, lower deep bid leaf are fixed in the middle part of lower big plate rail, and lower big plate rail top is equipped with sun gear, in lower big plate rail
The heart is equipped with lower bearing fixation hole, and lower deep bid is installed on lower bearing by the lower bearing fixation hole at lower big plate rail center.
3. big disc mechanism according to claim 1 or 2, which is characterized in that planetary gear is single-stage planetary wheel or double-pinion planetary
Wheel, single-stage planetary wheel are provided only with a gear ring；Two-stage planet wheel includes bull gear and small gear ring, and bull gear and the superposition of small gear ring are solid
It is fixed.
4. the big disc mechanism of board item is dialled in rotation according to claim 1 or 2, which is characterized in that power transmission gear is set to down
Perhaps power transmission gear is set to the periphery of lower big plate rail or power transmission gear is set to lower deep bid page at the edge of deep bid page
Edge between the periphery of lower big plate rail.
5. the big disc mechanism of board item is dialled in rotation according to claim 1 or 2, which is characterized in that the quantity of power transmission gear
It is two, one of power transmission gear is set to the side of lower deep bid page set on the periphery of lower big plate rail or power transmission gear
For edge between the periphery of lower big plate rail, another power transmission gear is set to the edge of lower deep bid page.
6. the big disc mechanism of board item is dialled in rotation according to claim 2, which is characterized in that the bearing block includes top chock
And step, the center of top chock and the center of step are equipped with interconnected through-hole, dial board device and pass through upper bearing (metal)
It is installed on top chock, lower deep bid is installed on step by lower bearing, and planet carrier is installed on top chock and lower axle
It holds on a linking part.
7. the big disc mechanism of board item is dialled in rotation according to claim 1 or 2, which is characterized in that the top of the top chock
Equipped with the upper bearing (metal) retainer ring being located above upper bearing (metal)；The lower part of the step is equipped with the lower bearing card being located at below lower bearing
Circle；The upper surface of the top chock is equipped with upper installing hole, and the lower end surface of step is equipped with lower mounting hole.
8. the big disc mechanism of board item is dialled in rotation according to claim 2, which is characterized in that the lower deep bid leaf of the lower deep bid is in
Horizontality is placed, and upper deep bid is in umbrella, upper big plate edge diagonally downward, upper deep bid with lower deep bid is leaf washes at flat outside convexity
Board disk shape.
9. the big disc mechanism of board item is dialled in rotation according to claim 2, which is characterized in that be equipped with branch above the planet carrier
Support idler wheel.
10. mute mahjong machine, including the big disc mechanism of board item, the bottom plate of mahjong machine are dialled in rotation as described in claim any one of 1-9
It is connected by the lower mounting hole of big disc mechanism and big disc mechanism；The operation panel central elevating mechanism of mahjong machine passes through in top chock
Heart through-hole and step central through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810196611.6A CN110237525A (en) | 2018-03-09 | 2018-03-09 | The big disc mechanism of board item and mute mahjong machine are dialled in rotation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810196611.6A CN110237525A (en) | 2018-03-09 | 2018-03-09 | The big disc mechanism of board item and mute mahjong machine are dialled in rotation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110237525A true CN110237525A (en) | 2019-09-17 |
Family
ID=67882321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810196611.6A Withdrawn CN110237525A (en) | 2018-03-09 | 2018-03-09 | The big disc mechanism of board item and mute mahjong machine are dialled in rotation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110237525A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111544885A (en) * | 2020-04-24 | 2020-08-18 | 重庆荣爵科技有限公司 | Shuffling and rising device of mahjong machine |
| CN112755508A (en) * | 2020-12-25 | 2021-05-07 | 杭州天计科技有限公司 | Noise reduction system of mute mahjong machine |
-
2018
- 2018-03-09 CN CN201810196611.6A patent/CN110237525A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111544885A (en) * | 2020-04-24 | 2020-08-18 | 重庆荣爵科技有限公司 | Shuffling and rising device of mahjong machine |
| CN111544885B (en) * | 2020-04-24 | 2023-05-02 | 重庆荣爵科技有限公司 | Shuffling and middle lifting device of mahjong machine |
| CN112755508A (en) * | 2020-12-25 | 2021-05-07 | 杭州天计科技有限公司 | Noise reduction system of mute mahjong machine |
| CN112755508B (en) * | 2020-12-25 | 2023-11-10 | 杭州天计科技有限公司 | Noise reduction system of mute mahjong machine |
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Application publication date: 20190917 |
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| WW01 | Invention patent application withdrawn after publication |