JPH0681632B2 - Automatic mahjong table power transmission device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a power transmission device for an automatic mahjong table.

(Prior Art) Generally, in an automatic mahjong table, it is necessary to drive a transport device and a assembling mechanism that transport the tiles on the turntable to the tile attitude control unit, including a turntable that mixes and tiles the tiles. The table, the assembling mechanism, and the conveying device are each driven by a dedicated drive motor.

(Problems to be Solved by the Invention) As described above, the turntable and other assembling mechanisms and the conveying device are driven by dedicated drive motors, so that a timing device or the like for simultaneously operating the assembling mechanisms at four locations is required. This is not desirable in terms of assembling and cost as well as making the whole complicated and large.

Therefore, it is an object of the present invention to provide a power transmission device for an automatic mahjong table in which a drive motor for driving a turntable can simultaneously drive a assembling mechanism and a conveyor belt.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention is provided with an operating member at four positions around a rotatable turntable having a ring-shaped gear on the back surface side. A vertically moving assembly mechanism and four rotatable transmission shafts that mesh with the gears of the turntable are respectively arranged, and each transmission shaft has a transport start end facing the periphery of the turntable. A drive pulley around which a belt is hung and a drive gear that meshes with an input gear of a power transmission system that vertically moves an operating member of the assembling mechanism are provided, and one of the transmission shafts is driven by a drive motor. To drive.

(Operation) According to this power transmission device, when the drive shaft is driven by the drive motor, the turntable rotates via the transmission shaft. At this time, the remaining three transmission shafts are driven by the rotation of the turntable. As a result, the drive pulley and the drive gear rotate, so that the conveyor belt and the assembling mechanism can be driven. Therefore, the assembling mechanism and the motor for driving the conveyor belt can be omitted.

(Embodiment) An embodiment of the present invention will be described below in detail with reference to the drawings in FIG. 1 to FIG.

In FIG. 1, reference numeral 1 indicates an automatic mahjong table in which a game table 3 serving as a top plate is removed, and a base plate 5 of the automatic mahjong table 1 is shown.
The turntable 7, the assembling mechanism 9,9,9,9 arranged at four positions on the front, rear, left and right sides of the turntable 7 and the tile attitude control units 11,11,11,11 are respectively assembled. .

The turntable 7 has a mountain-shaped cross section that is inclined downward with respect to the peripheral wall 13 formed in a mortar shape.

The turntable 13 is provided with a ring-shaped gear 15 on the back side and is rotatably supported by bearings 17.

A dice case 19 that moves up and down in the bearing 17 by a lifting means (not shown) is provided in the center of the turntable 7, and the slot 21 is secured by raising the dice case 19 upward by the game table 3. It is like this. As a result, the tile P thrown in from the throwing port 21 falls on the turntable 7 and is then swung out to the peripheral portion while being stirred. A magnetic material F such as an iron piece is embedded in the tile P toward the back side.

On the other hand, the ring-shaped gear 15 provided on the turntable 7
The transmission gear 23a of the transmission shaft 23 meshes with this.

The transmission shafts 23 are rotatably supported by bearings 25 and are arranged at four positions respectively corresponding to the assembling mechanisms 9, 9, 9, 9, and each transmission shaft 23 is provided with a drive pulley 27 and a drive gear 29. It is provided. And each transmission shaft 23,23,23,23
Among them, one transmission shaft 23 is conductively connected to a reversible drive motor 33 via a reduction mechanism 31, and the rotational power of the drive motor 33 is transmitted to the turntable 7 via the transmission shaft 23. ing. As a result, the remaining three transmission shafts 23, 23, 23
Can be rotated by a turntable 7 that meshes with a ring-shaped gear 15.

A transport belt 37 is wound around a drive pulley 27 of the transmission shaft 23 via a driven pulley 35, and the transport belt 37 is arranged along the tangential direction so that the transport start end faces the peripheral portion of the turntable 7. There is. Therefore, the agitated tile P comes to be placed on the conveyor belt 37 without difficulty, and the tile posture control unit 11
Will be sent to.

As shown in FIG. 4, the tile posture control section 11 allows only the tiles in the prone posture and the tiles in the supine posture to pass through by the first and second restricting members 39, 40 provided above the conveyor belt 37, and the horizontal and vertical directions. It is composed of a gate portion 41 for dropping the tiles in the facing and oblique postures, and a reversing portion 43 for reversing only the tiles P in the supine posture passing through the gate portion 41 to the prone posture as shown in FIG.

Explaining the reversing unit 43 in detail with reference to FIGS. 5 to 8, a tile receiving unit 45 is provided at the transport end portion 37b of the transport belt 37.

The tile receiving section 45 is connected to the receiving table 47 via the guide surface 49, and the tile receiving section 45 is provided with a feeding device 51 for feeding the tile P to the receiving table 47.

The feeding device 51 is composed of a first arm 53 and a second arm 55 which are rotatable in the arrow direction by an arm shaft 52, and an arm pin 53a of the first arm 53 is formed in a cutout portion 45a formed in the bottom of the tile receiving portion 45. Facing. The arm pin 55a of the second arm 55 is in contact with the operating arm 59 of the tile transport member 57.

The tile transfer member 57 is configured such that the transfer belt 37 is moved from the base end portion 57a slidably fitted and supported by the left and right guide rails 61, 61.
A protrusion 63 that is formed in the shape of a strip plate that extends above the transport end portion 37b, and that temporarily suspends the tiles P sent by the transport belt 37 at the transport end portion 37b on the back surface of the leading end portion.
A magnet 65 for attracting the tile P in a supine posture with the back side facing upward is provided. The above-mentioned operating arm 59 is provided on the side of the tile transport member 57, and the operating arm 59 moves forward (fifth
(Solid line in the figure), the second arm 55 is in contact with the arm pin 55a. Thereby, the second arm of the feeding device 51
The reference numeral 55 is adapted to rotate counterclockwise about the arm shaft 52 as a fulcrum when the operating arm 59 moves backward (chain line in FIG. 6).

A guide groove 67 is provided on the bottom surface of the base end portion 57a of the tile conveying member 57 along the width direction, and a projection pin 71 provided at a position deviated from the center of the rotating body 69 is engaged with the guide groove 67. is doing.

The rotating body 69 is connected to and supported by the motor shaft 73a of the drive motor 73, and can be rotated counterclockwise by the drive motor 73. As a result, the protrusion pin 71 slides in the guide groove 67 by the rotation of the rotating body 69.

The protrusion pin 71 is set at a position where the tile conveying member 57 is reciprocated along the guide rails 61, 61 by sliding in the guide groove 67. The reciprocating movement at this time is the tile P attracted by the magnet 65. Is the stroke amount that abuts on the rising wall 47b formed on the pedestal 47.

Further, on the back surface side of the rotating body 69, a drive plate 83 for driving the sending-out member 77 of the tile sending-out device 75 is provided.

The delivery member 77 of the tile delivery device 75 is a guide rail 79.
It is fixed to a base portion slidably fitted along and is normally positioned by a biasing spring 78 on the pedestal 47 side and outside the notched rising wall 47a. The delivery member 77 moves against the biasing spring 78 when the drive plate 83 comes into contact with the pin 81 provided at the base of the rotation locus line of the drive plate 83, and moves the tile P to the assembling mechanism 9 described later. The pin 81 functions so as to be sent to the alignment table 85, and the pressing force is released at the position where the pin 81 deviates from the rotation locus region of the drive plate 83. The pressing stroke of the sending-out member 77 is set to a length corresponding to one tile in which the standby state for receiving the tile P in the receiving table 47 is secured.

The assembling mechanism 9 is a frame 87 fixed to the base plate 5.
An elevator table 89 that is vertically movably supported by the elevator table, an aligning table 85 that is installed in parallel with the elevator table 89 and is capable of descending and ascending and returning to the receiving table 47 by the thickness of the tile, and an aligning tile on the aligning tray 83 at the same time. And a push-out mechanism 91 for pushing out to the lifting platform 89.
Vertical movement is given by.

That is, the lifting platform 89 is supported on both ends by the guide members 97, 97 that move up and down along the left and right guide rails 95, 95, and is placed on the upper surface of the operating member 93. Further, it is supported by an assisting means 98 having an upward biasing function.

The operating member 93 is supported at both ends by guide members 99, 99 that move up and down along the left and right guide rails 95, 95, and
The guide member 97 on the 9 side and the guide member 99 on the operating member 93 side are interlockingly connected by a spring 101. Long holes 103, 103 are provided on the left and right of the operating member 93, and the left and right long holes 13, 103 are
Engagement pins 109 and 109, which are eccentrically provided, are engaged with the final gears 107 and 107 of the first and second power transmission systems 105 and 105 formed of the respective gear groups. Therefore, the final gears 107, 107 are rotated by the displaced engagement pins 109, 109, so that the actuating member 93 can be moved up and down. It should be noted that when the operating member 93 descends, the elevating table 89 descends by its own weight.

The input gear 109 of the first and second power transmission systems 105, 105 meshes with the drive gear 29 provided on the transmission shaft 23.

The drive gear 29 is loosely fitted to the transmission shaft 23 as shown in FIG. 3, and when the transmission shaft 23 rotates in the reverse direction (arrow), the engaging claw 113 idles against the projection pin 111 to be in a free state. ,
The standby state of the assembling mechanism 9 and the operating state of the transport belt 37 are secured respectively. Further, when the transmission shaft 23 rotates in the forward direction, that is, when the tiles are completely aligned with the assembling mechanism 9, the protrusion pin 11
The engaging claw 113 meshing with 1 rotates integrally with the transmission shaft 23 to ensure power transmission to the first and second power transmission systems 105, 105.

The alignment table 85 includes an outer member 115 on which the tiles P are placed and an inner member 1 slidably fitted and supported in the outer member 115.
17 and the outer member 115 has one hinge pin 119.
It is possible to move up and down with the fulcrum as a fulcrum. Outer member 11
A projecting tongue 121 is provided at the other end of the free end side of 5, and the lower edge 1 of the cutout window 123 provided in the frame 87 when descending.
It can come in contact with 25.

On the other hand, the inner member 117 is constantly urged toward the cutout window 123 by the urging spring 127, and the extension protrusion 129 provided at the end is in contact with the lower edge 125 of the cutout window 123. At this time, the outer member 115 is positioned so as to face the pedestal 47.

The extension protrusion 129 is pressed against the biasing spring 127 by being pushed by the tile P at the time of completion of alignment, the number of which reaches the specified number in the stopper 133 inserted from the opening of the outer member 115 into the setting hole 131 of the inner member 117. It retreats and comes off the lower edge 125 of the cutout window 123 and descends. At this time, the protruding tongue piece 121 comes into contact with the lower edge 125 of the cutout window 123 and is positioned at a height at which the tiles can be stacked in two stages. The stopper 133 is formed in a dogleg shape as shown in FIG. 15, and contacts the lower half of the stopper 133 when the one-step alignment is completed, and contacts the upper half of the stopper 133 when the two-step alignment is completed. The correct stacking condition is ensured. The aligning table 85 is a biasing spring (not shown) when the tiles aligned by the pushing mechanism 91 are pushed out to the elevating table 89.
It will be possible to return to the original position.

The pushing mechanism 91 includes a pushing plate 135 and a pair of first and second link arms 137 and 139, and the pushing plate 135 is arranged along the alignment table 85. The extruding plate 135 is formed in an angled cross section, and the extruding surface on the front surface is set to a length at which the two-tiered tiles P are extruded simultaneously. A pair of first link arms 137, 137 are provided on the left and right sides, one end of which is rotatably supported by the pushing plate 135 and the other end of which is rotatably supported by the frame 87.
The second link arms 139, 139 are provided in a pair on the left and right, one end of which is rotatably supported by a bracket 141 of the pushing plate 135 and the other end of which is rotatably supported by a side plate of the frame 87 and a rod 143 which is bridged between the side plates. As a result, a parallel link mechanism is formed, and the pushing plate 135 can be moved between the standby position (solid line in FIG. 13) and the pushing position (chain line in FIG. 13). Also, the second link arm 139
Is extended from the rod 143, and the extension 145 contacts the back surface of the operating member 93 to move the pushing plate 135 to the operating position via the second link arms 139 and 139 when the operating member 93 is at the lowest position. Function. In addition, stopper 133
A portion corresponding to is opened so that the operation of the pushing plate 135 is not hindered.

Note that FIG. 9 shows a stopper mechanism 147 that prevents the transfer of the tiles when the two-tier stacking alignment of each assembling mechanism 9 is completed.

The stopper mechanism 147 includes the first and second stoppers 149 and 151,
1, a driving mechanism 153 for operating the second stoppers 149 and 151, and the first stopper 149 is arranged above the conveyance end portion side of the conveyance belt 37, and the second stopper 151 is arranged above the conveyance start end side of the conveyance belt 37. With the stopper shaft 155 as a fulcrum, the conveyor belt 37 is rotatably supported in a state of protruding above the conveyor belt 37 (chain line) and in a retracted standby state (solid line). The respective stopper shafts 155, 155 are interlockingly connected by a connecting rod 161 connecting the first movable arm 157 and the second movable arm 159 fixed to the stopper shafts 155, 155, and the first movable arm 1
By pushing the operating rod 163 connected to 57 (arrow), it becomes possible to rotate. Further, the first movable arm 157 has an elongated hole 165.
Is provided, and the pin 171 of the rotating arm 169 pivotally supported by the mounting bracket 167 is engaged with the elongated hole 165. Pin 171
Is eccentrically provided and can be engaged with and disengaged from the first recess 173 and the second recess 174 formed in the mounting bracket 167, and the biasing spring 175 allows the first recess 173 and the second recess 174 side. The first concave portion 173 is normally exposed to the first concave portion 173. At this time, the tip of the rotating arm 169 retracts into the peripheral wall 13 and is positioned in the second recess 174, as shown by the chain line.
To project from.

When the tip of the rotating arm 169 protrudes from the peripheral wall 13, the tip of the rotating arm 169 is blown off by a plurality of protrusions 7a provided on the peripheral edge of the turntable 7 on the back surface side. As a result, the pin 1 is inserted into the second recess 174.
The movement of 71 moves the first movable arm 157 to move the first and second arms.
The stoppers 149 and 151 project above the conveyor belt 37, and the conveyance of the tile P is blocked.

On the other hand, the operating rod 163 is connected to the swing arm 177, and the swing arm 177 is linked and linked to a slide arm 179 slidably supported by the base plate 5. The protruding piece 181 of the slide arm 179 is located at a position corresponding to the vertical arm 183 that is perpendicular to the inner member 117 of the alignment table 85, and when the alignment table 85 descends, the protruding piece 181 and the vertical arm 183 contact each other. The interlocking state is ensured. Therefore, when the inner member 117 is moved, that is, when the tiles are completely aligned, the slide arm 1 is moved by the vertical arm 183.
By the movement of 79, the rotation of the first movable arm 157 of the drive mechanism 153 can be obtained via the swing arm 177 and the operating rod 163.

In the power transmission device configured as described above, the rotational power of the drive motor 33 is transmitted through the transmission shaft 23 to the turntable 7
Be transmitted to. Due to the rotation of the turntable 7, the remaining three transmission shafts 23, 23, 23 also rotate at the same time, and the power can be transmitted to the conveyor belt 37 and the assembling mechanism 9. At this time, since the four assembling mechanisms 9, 9, 9, 9 are in gear conduction with respect to the transmission shaft 23, no operation delay occurs and an accurate operating state can be obtained.

Therefore, a dedicated motor for driving the conveyor belt and the assembling mechanism becomes unnecessary.

In this embodiment, one transmission shaft 23 is connected to the drive motor 33.
The transmission shafts 23, 23 facing each other can be simultaneously driven by the drive motor 33. In this case, the drive motor can be downsized and a balanced drive torque can be obtained.

[Effects of the Invention] As described above, according to the power transmission device for an automatic mahjong table of the present invention, it is possible to drive the conveyor belt and the assembly mechanism by the drive motor that drives the turntable. This is extremely preferable in terms of assembling and cost reduction while making the entire apparatus compact.

[Brief description of drawings]

FIG. 1 is a schematic plan view of an automatic mahjong table according to the present invention,
2 is an enlarged sectional view taken along line II-II of FIG. 1, and FIG. 3 is of FIG.
III-III line sectional drawing, FIG. 4 is explanatory drawing of a regulation member, 5th
FIGS. 6, 6, 7 and 8 are explanatory views of the inversion part of the tile, FIG. 9 is a schematic plan view of the stopper mechanism of the tile, FIG. 10 is a plan view of the assembling mechanism, and FIG. 11 is The same rear view, FIG. 12 is a side view of the same, FIG. 13 is a sectional view taken along the line XIII-XIII of FIG. 10, FIG. 14 is an explanatory view showing the power transmission system of the operating member, and FIG. 15 is an alignment. It is explanatory drawing of a stand. 7 …… Turntable 9 …… Assembly mechanism 15 …… Ring gear 23 …… Transmission shaft 27 …… Drive pulley 29 …… Drive gear 33 …… Drive motor 37 …… Conveyor belt 93 …… Operating member 105… … Power transmission system 109… Input gear

Claims (1)

[Claims] 1. An assembling mechanism that moves up and down by an actuating member at four positions around a rotatable turntable equipped with a ring-shaped gear on the back side and four rotatable positions that mesh with the gears of the turntable. A transmission shaft is arranged respectively, and a vertical movement is given to each transmission shaft, a drive pulley around which a conveyor belt for tile transfer whose peripheral edge portion of the turntable faces a conveyor belt is wound, and an operating member of the assembling mechanism. A power transmission device for an automatic mahjong table characterized in that a drive gear that meshes with an input gear of a power transmission system is provided, and one of the transmission shafts is driven by a drive motor.