CN102755741B - Tile flipping mechanism of mahjong machine - Google Patents
Tile flipping mechanism of mahjong machine Download PDFInfo
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- CN102755741B CN102755741B CN201210278397.1A CN201210278397A CN102755741B CN 102755741 B CN102755741 B CN 102755741B CN 201210278397 A CN201210278397 A CN 201210278397A CN 102755741 B CN102755741 B CN 102755741B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 44
- 230000005484 gravity Effects 0.000 claims abstract description 42
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- 230000008901 benefit Effects 0.000 claims abstract description 10
- 238000007514 turning Methods 0.000 claims description 21
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- 238000009826 distribution Methods 0.000 claims description 6
- 238000007373 indentation Methods 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 abstract description 3
- 229910052761 rare earth metal Inorganic materials 0.000 abstract description 3
- 150000002910 rare earth metals Chemical class 0.000 abstract description 3
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- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The invention relates to a tile flipping mechanism of a mahjong machine. The tile flipping mechanism comprises a tile conveying groove and an identification groove. The identification groove is positioned on two sides of the tile conveying groove and lower than the tile conveying groove; the tile conveying groove includes two parallel guiding surfaces, an inclined pushing surface and a conveying belt arranged between the two parallel guiding surfaces; two tile flipping notches are disposed on the two parallel guiding surfaces respectively, and the two tile flipping notches are a front tile flipping notch and a back tile flipping notch which are arranged according to longitudinal positions of the operation direction of the conveying belt; the inclined pushing surface is positioned on the guiding surface which is opposite to the back tile flipping notch; and the centers of gravity of tiles lying on one side are inclined to the front surfaces or the back surfaces, and the tiles lying on one side are turned on one side at positions of the front tile flipping notch and the back tile flipping notch so that consistent tile surfaces are formed. The tile flipping mechanism has the advantages that magnetic materials and corresponding photoelectric elements and are not required in tile surface identification, not only cost is saved and consumption of rare earth materials is reduced, but the possibility of cheating on tiles is decreased. Besides, identifying tiles surfaces is accurate, flipping action is reliable, and the structure is simple.
Description
Technical field
The present invention relates to mahjong machine, relate in particular to a kind of flop mechanism of mahjong machine.
Background technology
The mah-jong pieces that existing mahjong machine is used are all magnetic, and the front of mah-jong pieces (having character or white face) and reverse side have different magnetic.When mahjong machine is worked, these magnetic mahjongs in the bucket of shuffling, shuffled the traffic cycle drive of bottom of the barrel and rotation thereupon, under the effect of centrifugal force, mah-jong pieces move to traffic cycle edge.Some permanent magnets are set below traffic cycle, mah-jong pieces may produce upset because being subject to this permanent magnets magneticaction in the process moving to edge, according to the two magnet two like magnetic poles repel each other principles that there is a natural attraction between the sexes, mah-jong pieces in traffic cycle edge are finally turned into the consistent board of board face, and downward board face is different with the corresponding magnetic pole of permanent magnets on traffic cycle.The consistent board of these board faces again by magnetic force be attracted on four directions to suction board wheel upper, by inhaling the rotation of board wheel, send in delivery chute.If change mah-jong pieces board face direction, need only the corresponding magnetic polarity of obverse and reverse that changes mah-jong pieces, or change the permanent magnets magnetic polarity of the traffic cycle below of the bottom of the barrel of shuffling.
Its manufacture craft relative complex of the magnetic mah-jong pieces of tool, the production cycle is long, energy consumption is large, and because consuming a large amount of rare earth materials containing being magnetic, cost is high, will place magnetic material make its designs and varieties single because of inside simultaneously; Magnetic board has cheating condition on the other hand.For many years, inside and outside industry all by fair means or foul " demagnetization ", but the ordinary mahjong that there is no magnetic, realize difficulty correct and board face identification reliably and then turn-over very large, high to specification requirements such as the precision of the frame for movement of mahjong machine and electrical equipment control, stability, the accuracy rate of action must be accomplished absolutely.Through the effort of nearly ten years, with respect to becoming well done mah-jong pieces face recognition technology, be by the white of mah-jong pieces just or have the Analysis of Reflective Spectrum of character face face (board is positive) and colored NULI character face (board reverse side) to identify and send the corresponding frame for movement of order-driven to realize.But up to the present, the accuracy of this identification reaches and does not also reach requirement, make without magnetic mahjong machine product at home, the batch that still do not have of outer market throws in.
Summary of the invention
Main purpose of the present invention is to propose a kind ofly without magnetic and optical, electrical device and corresponding circuits, just can identify mah-jong pieces positive and negative, and it is carried out to the flop mechanism of a kind of mahjong machine of board face arrangement; The object of this aspect is also to provide a kind of simple in structure, flop mechanism that cost is low.
Above-mentioned purpose of the present invention is by realizing with following technical proposals.
Described flop mechanism, comprises defeated board groove and identification slot, and described identification slot is placed in defeated board groove both sides and lower than defeated board groove, described defeated board groove comprises two parallel spigot surfaces, one inclined thrust surface and be arranged on the conveyer belt between described two parallel spigot surfaces, on two spigot surfaces, be respectively equipped with a board turning breach, this two board turnings breach is pressed the front and back position setting of conveyer belt traffic direction, be respectively front board turning breach and rear upset breach, described inclined thrust surface is arranged on the spigot surface relative with rear board turning breach, defeated board groove conveyer belt width is less than the center of gravity thickness of mah-jong pieces, before center of gravity is partial to respectively, the board of lying on one's side of rear board turning breach before corresponding, rear board turning indentation, there rollover, form board face consistent and take the reverse side of board or positive for taking advantage of the board of the face of crouching, to be described board center of gravity be divided in two segment length the relatively length of long one section by the thickness of this board to described center of gravity thickness, defeated board groove is communicated with by the breach that overturns with identification slot.
Described flop mechanism further designs and is, described identification slot bag is at least containing a conveyer belt.
Described flop mechanism further designs and is, described identification slot is mainly comprised of with the two parallel spigot surfaces that are placed in these conveyer belt both sides a conveyer belt.
Described flop mechanism further designs and is, described two spigot surfaces are attached on two corresponding parallel guide plates, and the medial surface that this two parallel guide plate is relative is described spigot surface.
Described flop mechanism further design is, described inclined thrust surface is attached on a derivation board, being connected on guide plate of this derivation board, the centre-height place that is connected to guide plate of derivation board.
Described flop mechanism further design is, described board is different along the Density Distribution of board thickness direction, the front or reverse side one side that make the center of gravity of described board be partial to board.
Described flop mechanism further design is, described board is made corresponding cuboid by the material of two kinds of different densities and arranged and be formed by connecting by board thickness direction, and the Density Distribution of this board through-thickness is different, the front or reverse side one side that make the center of gravity of board be partial to board.
Described flop mechanism further design is, described board by the material of two kinds of different densities make respectively inside contain cavity as the cuboid of board and with the suitable filling block of a described cavity part, described cavity is along the thickness direction setting of board, and described filling block is filled in the cavity bottom corresponding to board front or reverse side one end.
Described flop mechanism further design is, described board is made inside by a kind of density material and contained cavity as the cuboid of board, and described cavity is arranged on corresponding to board front or reverse side one end, the front or reverse side one side that make the center of gravity of board be partial to board.
Described flop mechanism further designs and is, described cavity is the rectangular enclosure corresponding with the cuboid of described board, and described filling block is the rectangular block corresponding with described cavity, and this block filling is in the cavity bottom corresponding to board front or reverse side one end.
Flop mechanism of the present invention is partial to the board of front or reverse side for center of gravity, this kind of board taken advantage of and crouched in the defeated board groove of flop mechanism with the side of board, running to corresponding mahjong pieces outlet, it is board turning indentation, there, center of gravity produces side upset in taken advantage of sleeping bearing-surface outside, formation is done and is taken advantage of the flat sleeping board of sleeping face and fall into corresponding identification slot with the front of board or reverse side, forms the flat sleeping board of required board face.The incompatible realization that matches of the board of flop mechanism of the present invention by the biasing with center of gravity reaches the object that board face is arranged to the identification of board face, to produce following beneficial effect: no longer need magnetic material, thus, on the one hand can be greatly cost-saving, reduce the consumption to rare earth material, reduced on the one hand the possibility of practising fraud on board, according to board center of gravity, come the identification of identifying plate face very accurate simultaneously, board turning Reliability of Microprocessor is high, and corresponding flop mechanism is simple in structure, and cost is low.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the structure of flop mechanism of the present invention, outside the conveyer belt that the center of gravity that flop mechanism is registered the license drops on.
Fig. 2 is the transport process of board shown in flop mechanism shown in Fig. 1 is looked from B direction in a, b position.
Fig. 3 is the structural representation of flop mechanism of the present invention while overlooking, in the conveyer belt that the center of gravity that flop mechanism is registered the license drops on.
Fig. 4 is the transport process of board shown in flop mechanism shown in Fig. 3 is looked from B direction in c position.
?fig. 5 makes the schematic diagram of a kind of structure of mah-jong pieces of the present invention with bi-material.
Fig. 6 makes the schematic diagram of the another kind of structure of mah-jong pieces of the present invention with bi-material.
Fig. 7 makes the schematic diagram of a kind of structure of mah-jong pieces of the present invention with a kind of material.
The specific embodiment
The mah-jong pieces that flop mechanism of the present invention adopts are being taken advantage of with its length and the formed face of lying on one's side of width while crouching in a bearing-surface, and its center of gravity G is partial to front or reverse side one side of board.This board is different along the Density Distribution of board thickness direction, the front or reverse side one side that make the center of gravity of board be partial to board, and its concrete structure can be multiple, and the present invention is explained following three examples of act, but is never limited to lifted embodiment.
Please refer to Fig. 1, these mah-jong pieces are formed by connecting by the material of two kinds of different densities.The side that this board forms with its length L and thickness B is taken advantage of and is crouched on bearing-surface,, the state of lying on one's side that wherein Fig. 1 a is this board, Fig. 1 b and Fig. 1 c are respectively the left and right views of mah-jong pieces shown in Fig. 1 a, the positive Z and the reverse side F that have shown respectively this board, the length of this board is that L, width are that S, thickness are B.The material example of two kinds of above-mentioned different densities is made respectively rectangular block 1a and the rectangular block 1b of thickness difference (being respectively B1, B2).By this two rectangular block 1a, the docking of 1b through-thickness, for example by mold pressing or injection moulding process, both are consolidated into one, form mah-jong pieces 1, because this board is along board thickness direction upper density skewness, and the density of positive one end of board is large, so the center of gravity G of board, near positive Z mono-side of board, is partial to the geometric center C of board.The center of gravity thickness of this board is BG2, and center of gravity thickness is that this board center of gravity G is divided into two sections of BG1, BG2 by the thickness B of this board, and wherein one section of relatively long BG2 length is center of gravity thickness.
Refer to Fig. 2, these mah-jong pieces are also made by the material of two kinds of different densities.With the relatively little material of density for example common plastics make as board shape cavity cuboid, this chamber cuboid is comprised of the box body 1.1b that comprises the positive Z of board and the lid 1.1a that comprises board reverse side F, by density, with respect to the large material building stones that for example density is high or iron, make and rectangular block 1.2, this rectangular block 1.2 is suitable and be placed in the cavity corresponding to the positive Z of board box body one end with cavity, be connected in the inside bottom surface of bottom, near one end of the positive Z of board.By lid 1.1a by mold pressing or other general technological means sealing-ins in opening one end of box body 1.1b, form mah-jong pieces 1.This board center of gravity is partial to positive Z, and is partial to a side of the geometric center C of board.According to above-described embodiment, there is center of gravity thickness B G2 in this board equally.
Refer to Fig. 3, these mah-jong pieces are made with a kind of material.Inner side at the thickness direction along board arranges cavity, for example, in the inner side near described board reverse side F one end, cavity is set, and makes to be less than board near the density of the positive one end of board near the density of described board reverse side one end.Make the Density Distribution of described board through-thickness different.Its concrete structure also can be made the structure of above-mentioned box body 1.1b and lid 1.1a, just much bigger than the box bottom thickness H2 of close board reverse side one end near the box body bottom thickness H1 of the positive one end of board, makes center of gravity G be partial to the positive one end of board.Can certainly as required center of gravity be partial to board reverse side one end, this is thing easily for a person skilled in the art.According to above-described embodiment, there is center of gravity thickness B G2 in this board equally equally.
Above-mentioned mah-jong pieces are placed in to flop mechanism of the present invention, just can realize the board face identification of above-mentioned mah-jong pieces and arrange.Concrete structure in flop mechanism is as following embodiment, but is not limited to illustrated embodiment.
Contrast Fig. 4～Fig. 5, flop mechanism is mainly comprised of defeated board groove 10 and identification slot 20, and identification slot 20 is placed in defeated board groove 10 both sides and lower than defeated board groove position.Defeated board groove 10 is for delivery of the above-mentioned board of lying on one's side, mainly by two parallel spigot surface 11a, 12a, inclined thrust surface 13a and the conveyer belt 14 being arranged between two parallel spigot surfaces, formed, parallel spigot surface 11a, 12a depend on the guide plate 11,12 of corresponding pair of parallel, the gap ratio board thickness B of two parallel spigot surfaces is more bigger, guarantees that like this board on conveyer belt is passed abreast with the attitude of lying on one's side.The width D of conveyer belt 14 is less than the center of gravity width B G2 of the face of lying on one's side, and the center of gravity of the board that makes to lie on one's side drops on outside conveyer belt plane.Spigot surface 13a depends on two parallel guide plates 13, is the relative medial surface of this two guide plate.On two spigot surface 11a, 12a, be respectively equipped with board turning breach, this two board turnings breach is pressed the front and back position setting of conveyer belt traffic direction, is respectively front board turning breach 18a and rear board turning breach 18b.It is upper that inclined thrust surface 13a is arranged on the spigot surface 12a relative with rear board turning breach 18b, being connected on guide plate 13 and being positioned at the centre-height place of guide plate of this derivation board.Conveyer belt width D is less than the center of gravity thickness B G2 of described board, and the center of gravity that makes like this board reverse side be close to the board of spigot surface 11a drops on outside conveyer belt plane, in the rollover of front board turning breach 18a place, falls into corresponding identification slot 20.The board that board reverse side is close to spigot surface 11b is pushed against by inclined thrust surface 13a, and center of gravity is dropped on outside conveyer belt plane, in rear board turning indentation, there rollover, equally also falls into corresponding identification slot 20, and the board that rollover falls into identification slot 20 forms anti-supine flat sleeping board.Identification slot 20 main one comprises the parallel spigot surface of conveyer belt 24, two and is placed in the conveyer belt between this two spigot surface; Defeated board groove is communicated with by the breach that overturns with identification slot.
Identification slot 20 at least comprises conveyer belt 25, and for the flat sleeping board on it can be passed abreast, the present embodiment adopts spigot surface 21a, the 22a of pair of parallel, and conveyer belt 25 is placed between this two spigot surface.Spigot surface 21a, 22a are attached on corresponding a pair of guide plate 21,22, and the width S of the spacing board of two parallel spigot surfaces is bigger, can keep preferably so the flat prone position state of the board on conveyer belt.Conveyer belt the 14, the 24th in defeated board groove 10 and identification slot 20, is respectively the conveyer belt of closed loop, all by least two of correspondence, transmits running roller (not shown)s and transmits.
When mah-jong pieces 1 of the present invention are transferred in above-mentioned flop mechanism, if the front of mah-jong pieces is in guide plate 12 1 sides, reverse side F nestles up guide plate 11, takes advantage of and crouches on the conveyer belt 14 of lying on one's side, referring to the residing a position of the board in Fig. 4 and corresponding Fig. 5 a.Under conveyer belt 14 transmissions and spigot surface 11a, 12 a guiding, when board 1 parallel runs to the b position at front upset breach 18 places, because there being the center of gravity of the constraint guiding board of spigot surface 12a to drop on, outside the face of lying on one's side, do not produce rollover, on the conveyer belt 24 of the identification slot 20 below falling, making the board in identification slot unit is all the board that reverse side makes progress, and refers to board residing b position in Fig. 4 and corresponding Fig. 5 b.
As mah-jong pieces have the positive Z of character, nestle up guide plate 11, board 1 also moves from right to left by indicated direction 15.When running to corresponding and front upset breach 18a place, because of the positive Z of being partial to of mah-jong pieces, center of gravity position is taken advantage of and is crouched on conveyer belt, and unsettled (beyond dotted line) outside conveyer belt be the mah-jong pieces reverse side F that weight is partially light, can not turn on one's side, refer to board 1 residing a position in Fig. 6 and corresponding Fig. 7 a, mah-jong pieces continue to lie on one's side on conveyer belt 14 and are again subject to spigot surface 11a, 12a guiding, be transported to inclined thrust surface 13a place, be subject to the pushing and pressing of this inclined thrust surface 13a, with driving-belt, move forward on the one hand, to the identification slot direction of a corresponding side, move on the one hand, the bearing-surface that makes the center of gravity of board fall into conveyer belt 14 produces side upset outward, see c position in Fig. 6 and corresponding Fig. 7 b.So the present invention is organized into the consistent board of board face by the biasing of board center of gravity and the inconsistent board of cooperation trump card face of corresponding switching mechanism, carrys out the positive and negative of identifying plate without the circuit of photo electric sensitive element and correspondence.
Claims (10)
1. a flop mechanism for mahjong machine, is characterized in that comprising defeated board groove and identification slot, and described identification slot is placed in defeated board groove both sides and lower than defeated board groove, described defeated board groove comprises two parallel spigot surfaces, one inclined thrust surface and be arranged on the conveyer belt between described two parallel spigot surfaces, on two spigot surfaces, be respectively equipped with a board turning breach, this two board turnings breach is pressed the front and back position setting of conveyer belt traffic direction, be respectively front board turning breach and rear upset breach, described inclined thrust surface is arranged on the spigot surface relative with rear board turning breach, defeated board groove conveyer belt width is less than the center of gravity thickness of mah-jong pieces, before center of gravity is partial to respectively, the board of lying on one's side of rear board turning breach before corresponding, rear board turning indentation, there rollover, form board face consistent and take the reverse side of board or positive for taking advantage of the board of the face of crouching, to be described board center of gravity be divided in two segment length the relatively length of long one section by the thickness of this board to described center of gravity thickness, defeated board groove is communicated with by the breach that overturns with identification slot.
2. the flop mechanism of a kind of mahjong machine according to claim 1, is characterized in that described identification slot at least comprises a conveyer belt.
3. the flop mechanism of a kind of mahjong machine according to claim 2, is characterized in that described identification slot is mainly comprised of with the two parallel spigot surfaces that are placed in these conveyer belt both sides a conveyer belt.
4. the flop mechanism of a kind of mahjong machine according to claim 1, is characterized in that described two spigot surfaces are attached on two corresponding parallel guide plates, and the medial surface that this two parallel guide plate is relative is described spigot surface.
5. flop mechanism according to claim 1, is characterized in that described inclined thrust surface is attached on a derivation board, the centre-height place that is connected to guide plate of this derivation board.
6. according to the flop mechanism of a kind of mahjong machine of any one described in claim 1-4, it is characterized in that described board is different along the Density Distribution of board thickness direction, the front or reverse side one side that make the center of gravity of described board be partial to board.
7. the flop mechanism of a kind of mahjong machine according to claim 6, it is characterized in that described board makes corresponding cuboid by the material of two kinds of different densities and arrange and to be formed by connecting by board thickness direction, the Density Distribution of this board through-thickness is different, the front or reverse side one side that make the center of gravity of board be partial to board.
8. the flop mechanism of a kind of mahjong machine according to claim 6, it is characterized in that described board by the material of two kinds of different densities make respectively inside contain cavity as the cuboid of board and with the suitable filling block of a described cavity part, described cavity is along the thickness direction setting of board, and described filling block is filled in the cavity bottom corresponding to board front or reverse side one end.
9. the flop mechanism of a kind of mahjong machine according to claim 6, it is characterized in that described board makes inside by a kind of density material and contain cavity as the cuboid of board, described cavity is arranged on corresponding to board front or reverse side one end, the front or reverse side one side that make the center of gravity of board be partial to board.
10. the flop mechanism of a kind of mahjong machine according to claim 8, it is characterized in that described cavity is the rectangular enclosure corresponding with the cuboid of described board, described filling block is the rectangular block corresponding with described cavity, and this block filling is in the cavity bottom corresponding to board front or reverse side one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210278397.1A CN102755741B (en) | 2012-08-07 | 2012-08-07 | Tile flipping mechanism of mahjong machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210278397.1A CN102755741B (en) | 2012-08-07 | 2012-08-07 | Tile flipping mechanism of mahjong machine |
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| Publication Number | Publication Date |
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| CN102755741A CN102755741A (en) | 2012-10-31 |
| CN102755741B true CN102755741B (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210278397.1A Expired - Fee Related CN102755741B (en) | 2012-08-07 | 2012-08-07 | Tile flipping mechanism of mahjong machine |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2420048Y (en) * | 1999-06-24 | 2001-02-21 | 魏胜宏 | Sturcture of mahjong pieces |
| CN1778444A (en) * | 2004-11-23 | 2006-05-31 | 于作涛 | Automatic arrangement and its structure for normal mahjong pieces |
| CN102309850A (en) * | 2011-09-23 | 2012-01-11 | 松冈机电（中国）有限公司 | Automatic mahjong tile turning device and mahjong tile |
| CN102357305A (en) * | 2011-09-23 | 2012-02-22 | 松冈机电（中国）有限公司 | Mahjong piece turning mechanism |
| CN202270336U (en) * | 2011-09-23 | 2012-06-13 | 松冈机电（中国）有限公司 | Forward turnover mechanism suitable for mahjong pieces with concave surfaces |
-
2012
- 2012-08-07 CN CN201210278397.1A patent/CN102755741B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2420048Y (en) * | 1999-06-24 | 2001-02-21 | 魏胜宏 | Sturcture of mahjong pieces |
| CN1778444A (en) * | 2004-11-23 | 2006-05-31 | 于作涛 | Automatic arrangement and its structure for normal mahjong pieces |
| CN102309850A (en) * | 2011-09-23 | 2012-01-11 | 松冈机电（中国）有限公司 | Automatic mahjong tile turning device and mahjong tile |
| CN102357305A (en) * | 2011-09-23 | 2012-02-22 | 松冈机电（中国）有限公司 | Mahjong piece turning mechanism |
| CN202270336U (en) * | 2011-09-23 | 2012-06-13 | 松冈机电（中国）有限公司 | Forward turnover mechanism suitable for mahjong pieces with concave surfaces |
Also Published As
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|---|---|
| CN102755741A (en) | 2012-10-31 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 |