JP2009160319A - Drive mechanism for pachinko ball lifting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drive mechanism for a Pachinko ball lifting device, which prevents the device from being broken due to an overload. <P>SOLUTION: The drive mechanism for the Pachinko ball lifting device includes a main driving pulley 5 rotated by a drive source 9, a driven pulley 6 coupled up to a rotary body 14 for lifting Pachinko balls up and an endless belt 7 wound between the pulleys 5 and 6 and for transmitting rotations of the pulley 5 to the pulley 6. A rugged pattern 28 obliquely crossing a circumferential direction of the pulley 5 is formed on the outer periphery of the pulley 5. When the overload causes a slip on a contact face of the pulley 5 and the belt 7, the belt 7 is so guided by the pattern 28 as to be pushed out in an axial direction of the pulley 5, coming apart from the pulley 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a driving mechanism of a pachinko ball lifting device that lifts a pachinko ball to an upper tank of an island where a pachinko machine is installed, and more particularly, a pachinko ball lifting device that prevents the pachinko ball lifting device from being damaged by an overload. The present invention relates to a driving mechanism of a feeding device.

At the pachinko amusement hall, pachinko machine islands with many pachinko machines are formed, and when pachinko balls are discharged from each pachinko machine, they are collected for each pachinko machine island and then supplied to each pachinko machine again. Used repeatedly cyclically. At this time, dirt such as machine oil and hand dust adhering to the surface of the pachinko ball is washed by the polishing device, and the washed pachinko ball is moved to the upper tank of the pachinko machine installation island by the ball lifting device. . Such a pachinko ball lifting device is disclosed in the following patent document, for example.
Japanese Patent No. 2957578

  By the way, in the pachinko ball lifting device disclosed in the above-mentioned Patent Document 1, the drive shaft of the motor is directly connected to the rotating shaft of the rotating body provided in the lifting section, and the rotational movement of the motor is directly transmitted to the rotating body. ing. In the configuration as described above, for example, even if a foreign object is caught in the pumping unit and caught, and the rotation of the rotating body is hindered and overloaded, the motor continues to rotate without stopping. Rotational motion continues to be transmitted to the rotating body. Therefore, there has been a problem that the rotating body and its surrounding members are likely to be damaged. In addition, since the motor continues to rotate under the same overload, the motor itself may be damaged.

  In order to solve such a problem, for example, it is conceivable to monitor a load applied to the motor and introduce a motor with a brake device that automatically stops rotating when an overload condition occurs. However, since such a motor is often large in size, a large installation space is required, and the cost of equipment is increased because it is more expensive than a normal motor.

  Therefore, in order to solve the above-described problems, the drive mechanism of the pachinko ball lifting device according to claim 1 is connected to a main pulley that is rotated by a drive source and a rotating body that lifts the pachinko ball. A driven pulley, and an endless belt wound between the driven pulley and the driven pulley and transmitting the rotation of the driven pulley to the driven pulley, and obliquely intersecting the outer circumferential surface of the driven pulley with the circumferential direction When the contact surface between the main pulley and the endless belt slips due to overload, the endless belt is pushed out in the axial direction of the main pulley and is separated from the main pulley. It is characterized by doing.

  Moreover, the drive mechanism of the pachinko ball lifting device according to claim 2 is the drive mechanism of the pachinko ball lifting device according to claim 1, wherein the two main motions are rotated together by a single drive source. An endless belt is wound between the pulley and a driven pulley that rotates independently corresponding to each of the main pulleys, and the outer circumferential surface of the main pulley has an uneven pattern formed so as to be oblique to the circumferential direction. The direction of the main pulleys is opposite to each other, and the direction of detachment of the endless belt is an intermediate portion of the main pulleys.

  In the drive mechanism of the pachinko ball lifting device according to claim 1, for example, when foreign matter or the like is caught in the lifting unit and is caught and the rotational movement of the rotating body provided in the lifting unit is prevented, the main pulley And the contact surface of the endless belt slip. If it does so, an endless belt will be guide | induced to the uneven | corrugated pattern provided in the outer peripheral surface of a main pulley, will be extruded in the axial direction of this main pulley, and will detach | leave from a main pulley. Therefore, the rotational motion of the motor is not transmitted to the rotating body. Therefore, excessive force does not continue to act on the rotating body, and the rotating body and surrounding members can be prevented from being damaged. In addition, the motor itself does not continue to rotate and remain in an overloaded state, and damage to the motor can be prevented.

  Furthermore, in the drive mechanism of the pachinko ball lifting device according to claim 2, the two main pulleys are integrally rotated by a single drive source, and the pachinko balls are lifted corresponding to each of the main pulleys. Since the rotating bodies to be rotated are independently driven, the two rotating bodies are driven without increasing the number of drive sources, and the lifting ability of the pachinko balls can be doubled. Therefore, a single pachinko ball lifting device can obtain a lifting capacity equivalent to two, and a significant cost reduction can be realized.

  Even if one endless belt is detached from the main pulley due to overload, the other endless belt continues to transmit the rotational power to the driven pulley without being separated from the main pulley. Therefore, even if one rotating body stops, it is possible to prevent the pachinko ball from being lifted by the other rotating body and to completely stop the pachinko ball from being lifted.

  Furthermore, since the endless belt is removed from the intermediate direction of the main pulleys, the endless belts are separated from each other. Accordingly, the axial length of the main driving pulley can be made shorter and the space can be saved as compared with the case where the endless belt is separated from each main driving pulley separately. Further, by confirming which endless belt has been removed, it is possible to easily identify which stopped rotating body is.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing the internal structure of a pachinko machine installation island. The pachinko machine installation island 101 is formed by arranging a plurality of pachinko machines 102 arranged back to back, and the pachinko balls are circulated and used in the pachinko machine installation island 101. A ball polishing device 103 and a ball lifting device 104 are provided adjacent to each other at a substantially lower center of the pachinko machine installation island 101. The drive mechanism of the pachinko ball lifting device according to the present invention is incorporated in the ball lifting device 104. In addition, a lifting pipe 105 for lifting a pachinko ball is provided vertically above the ball lifting device 104. A ball tank 106 in which the raised pachinko balls are stored is installed at a substantially upper center of the pachinko machine installation island 101. Supply balls 107 that are inclined downward toward both ends of the pachinko machine installation island 101 are connected to the ball tank 106, and the pachinko balls flow down the supply rod 107 and are supplied to each pachinko machine 102. Further, a ball collecting basket 108 for collecting pachinko balls discharged from each pachinko machine 102 is provided below the pachinko machine installation island 101 so as to incline downward toward the ball polishing device 103.

  FIG. 2 is a front view of the ball polishing device and the ball lifting device. A ball box 109 is provided on the lower side of the ball polishing apparatus 103, and the pachinko balls that have flowed down the ball collecting bowl 108 are accommodated in the ball box 109. The pachinko balls are aligned in the ball box 109 and guided to the ball polishing device 103. The ball polishing device 103 is pulled out from a polishing cloth roll on a transport mechanism 110 in which a pachinko ball transport surface is formed by an endless belt wound around a pulley, and a pressing plate arranged to face the transport surface. And a polishing mechanism 111 laid with a polishing cloth. The ball polishing device 103 wipes off the dirt adhering to the surface of the pachinko ball. Further, a sphere passage 113 is provided in the upper part of the sphere polishing apparatus 103, and a storage tank 112 is provided at the end of the sphere passage 113. Pachinko balls polished by the ball polishing device 103 are temporarily stored in the storage tank 112. A ball lifting device 104 is installed below the ball passage 114 connected to the lower portion of the storage tank 112. Pachinko balls that have flowed into the ball lifting device 104 from the storage tank 112 via the ball passage 114 are transferred to the ball tank 106 on the upper part of the pachinko machine installation island 101 through the lifting pipe 105.

  Next, the drive mechanism of the pachinko ball lifting device of the present invention incorporated in the ball lifting device 104 will be described. FIG. 3 is a plan view of the drive mechanism of the pachinko ball lifting apparatus according to the present invention, and FIG. 4 is a cross-sectional view. 5 is a cross-sectional view of the lifting section and the driven pulley of the pachinko ball lifting apparatus according to the present invention, and FIG. 6 is a cross-sectional view taken along line XX in FIG. The drive mechanism of the pachinko ball lifting device of the present invention includes a drive unit 1 that transmits the rotational power generated by the motor, and a pair of lift units 2 that lift the pachinko ball by the rotational power transmitted by the drive unit 1. 2 is generally composed.

  As shown in FIGS. 3 and 4, the driving unit 1 is wound around the main driving pulleys 5 and 5 and the driven pulleys 6 and 6 inside the frame 4 formed by the side plates 3 and 3. Endless belts 7 and 7 and tension pulleys 8 and 8 are provided, and a motor 9 is attached to the outside and is generally configured. The main pulleys 5 and 5 are driven to rotate by the rotation of the motor 9 so that the endless belts 7 and 7 travel. Then, rotational power is transmitted to the driven pulleys 6 and 6 by the travel of the endless belts 7 and 7.

  On the other hand, as shown in FIG. 5, the lifting portion 2 is rotatably supported by bearings 11, 11 provided on the side plate 3 and the outer plate 10, and is connected to the rotary shaft 12 of the driven pulley 6. The central shaft 13, five sprockets 14 provided on the central shaft 13, and a ball guide 15 provided so as to surround the sprocket 14. As shown in FIG. 6, the circular outer peripheral surface of the sprocket 14 has ball receiving recesses 16, 16,... Formed at regular intervals, and the lower half of the spherical guide 15 is the circular outer peripheral surface of the sprocket 14. An arcuate guide surface 17 is formed opposite to. The pachinko ball that has flowed into the lifting portion 2 from the ball passage 114 is fitted into the ball receiving recess 16 of the sprocket 14 via the ball biting prevention means 18 and is rolled along the guide surface 17. And it sends out to the said lifting pipe 105 via the backflow prevention means 19, and is pumped up so that the inside of the lifting pipe 105 may be pushed up from the bottom.

  First, the drive unit 1 will be described. The frame 4 has a pair of rectangular side plates 3, 3 erected in parallel at appropriate intervals, and two support rods 20, 20 and a support plate 21 are installed between the side plates 3, 3. It is formed. The support bars 20 and 20 are provided near the apex of one side 3 a of the side plate 3, and the support plate 21 is provided on the other side 3 b of the side plate 3. Inside the frame 4, a bearing (not shown) is provided so that the drive shaft 22 is placed horizontally between the side plates 3 and 3 at an intermediate portion between one side 3 a of the side plate 3 and the center 3 c of the side plate 3. ) To be pivotally supported via The drive shaft 22 is provided with two main driving pulleys 5 and 5 that are integrally rotated. These main driving pulleys 5 and 5 are positioned close to the both side plates 3 and 3 while being appropriately spaced apart from each other. The driven pulleys 6 and 6 corresponding to the main driving pulleys 5 and 5 are provided in the frame body 4 so as to be independently rotatable. The driven pulley 6 is positioned at an intermediate portion between the other side 3 b of the side plate 3 and the center 3 c of the side plate 3 and has a diameter larger than the diameter of the main driving pulley 5. And the rotating shaft 12 of the driven pulley 6 is connected with the center axis | shaft 13 provided in the said lifting part 2 rotatably.

  The endless belt 7 is wound independently between the corresponding main driving pulley 5 and the driven pulley 6. Further, a tension pulley 8 is provided so as to come into contact with the upper end of the endless belt 7 from above. As shown in FIG. 4, the tension pulley 8 is rotatably supported by the bent portion of the bar 23 bent in a square shape, and is located near the center 3 c of the side plate 3 inside the frame body 4. Is done. One end of the bar 23 is pivotally supported by a support shaft 24 provided on the inner surface of the side plate 3 and above the main pulley 5, and the other end is close to the other side 3 b of the side plate 3. And is locked by an elastic body 26 made of a coil spring or the like to a projecting piece 25 projecting inwardly at the lower portion of the frame body 4. Thus, the bar 23 is biased by the tension force of the elastic body 26 in the direction in which the tension pulley 8 presses the endless belt 7 with the support shaft 24 as a fulcrum, and tension is appropriately applied to the endless belts 7 and 7.

  The motor 9 is provided outside the frame body 4 and outside the one side plate 3. The rotation of the motor 9 is transmitted to the drive shaft 22 while the direction of the rotation shaft is changed by the turning mechanism 27. Thus, the main driving pulley 5 is rotationally driven by the rotational movement of the motor 9.

  FIG. 7 is an enlarged view of the drive shaft and the main pulley. As shown in FIG. 7, a spiral groove 28 is formed on the outer peripheral surface of the main pulley 5 as an uneven pattern. The groove 28 is provided so as to be oblique to the circumferential direction while circling the outer peripheral surface of the main driving pulley 5, and proceeds in the axial direction like a screw when the main driving pulley 5 rotates. And the advancing direction of the groove | channel 28 of each main driving pulley 5 is formed so that it may become mutually opposite direction, and is orient | assigned to the intermediate direction of these main driving pulleys 5 and 5. That is, the groove 28 of one main driving pulley 5 is right-handed and the groove 28 of the other main driving pulley 5 is left-handed. Note that the groove 28 does not need to be formed continuously without interruption, and may be formed intermittently.

  Next, the pair of lifting units 2 and 2 will be described. As shown in FIG. 5, the lifting unit 2 is provided between the outer plate 10 and the side plate 3 erected in parallel to the side plate 3 outside the frame body 4, and the driven pulleys 6. , 6 are provided symmetrically on both sides of the frame body 4 so as to correspond respectively. In addition, both the pumping parts 2 and 2 are the same structures.

  Five sprockets 14 are connected in series so as to be integrally rotated with the central shaft 13, and are provided between the side plate 3 and the outer plate 10. The central shaft 13 is rotatably supported on the side plate 3 and the outer plate 10 via bearings 11, 11, and one end of the central shaft 13 is connected to the rotary shaft 12 of the driven pulley 6. .. Are formed at regular intervals on the outer peripheral surface of the sprocket 14 so that pachinko balls can be inserted and held.

  As shown in FIG. 6, the ball guide 15 is provided so as to surround the outer peripheral surface of the sprocket 14, and an inlet 29 and a outlet 30 of a pachinko ball are formed on the upper surface. The ball passage 114 is provided above the inflow port 29, and the pachinko ball whose surface is wiped off by the ball polishing device 103 is introduced from the storage tank 112. The lifting pipe 105 is connected to the upper side of the outlet 30, and the pachinko ball is provided above the pachinko machine installation island 101 so that the inside of the lifting pipe 105 is pushed upward from the bottom. It is lifted to the tank 106. Further, an arcuate guide surface 17 is formed in the lower half of the ball guide 15 so that a pachinko ball fitted in the ball receiving recess 16 is brought into contact with and held by the guide surface 17.

  The inside of the inflow port 29 is provided with a ball biting prevention means 18 comprising an inner guide piece 32 supported by a support shaft 31 so as to be tiltable and an outer guide piece 34 supported by a support shaft 33 so as to be tilted. It is done. An elastic body 35 made of a coil spring or the like is provided on the back surface of the outer guide piece 34, and the lower portion of the outer guide piece 34 is urged toward the sprocket 14. The pachinko balls flow down between the inner guide piece 32 and the outer guide piece 34 and fit into the ball receiving recess 16.

  On the other hand, a space portion 36 is formed inside the delivery port 30, and a backflow prevention means 19 is provided by an anti-back member 38 that is supported to be tiltable by a support shaft 37. Inside the anti-back member 38 is formed a through-duct 39 through which pachinko balls pass. An elastic body 42 made of a coil spring or the like is stretched between a locking piece 40 projecting from the anti-back member 38 in the space direction and a horizontal shaft 41 provided in the space. Is biased in the spatial direction. The pachinko balls that have been rolled along the guide surface 17 pass through the through duct 39 and are guided to the lift pipe 105.

  Next, the operation of the drive mechanism of the pachinko ball lifting device according to the present invention will be described. The direction of the rotating shaft of the motor 9 is changed by the turning mechanism 27, the rotating motion is transmitted to the drive shaft 22, and the main driving pulley 5 is rotated in the direction of arrow a in FIG. The rotation of the main pulley 5 is transmitted to the driven pulley 6 by the endless belt 7, the central shaft 13 connected to the rotating shaft 12 of the driven pulley 6 is rotated, and the sprocket 14 is driven to rotate in the direction of arrow b in FIG. Is done. Then, the pachinko ball that has flowed into the ball guide 15 from the ball passage 114 connected to the inlet 29 is guided to the sprocket 14 via the ball biting prevention means 18, and the ball receiving recesses 16, 16,. The ball guide 15 is rolled along the arcuate guide surface 17 while being fitted and held one by one. Then, the pachinko balls are discharged from the outlet 30 via the backflow prevention means 19 and conveyed upward in the lifting pipe 105. In this way, the pachinko balls are successively sent to the lifting tube 105 to form a ball train in the lifting tube 105, and are lifted to the ball tank 106 so as to be pushed up from below. .

  When the pachinko balls that have flowed in from the inlet 29 do not fit into the ball receiving recesses 16 of the sprocket 14 and the ball biting is likely to occur, the outer guide pieces 34 are moved by the pressing of the pachinko balls pushed outward by the sprocket 14. Tilt to the opposite side of the receiving recess 16 to prevent ball engagement. Then, the pachinko ball is smoothly guided to the next ball receiving recess 16 by the returning operation of the outer guide piece 34 by the extension force of the elastic body 35. Further, when the ball receiving recess 16 that does not hold the pachinko ball reaches the backflow prevention means 19, the anti-back member 38 tilts in the direction of the space 36 due to the tensile force of the elastic body 42. Then, the pachinko ball located at the lowermost part of the through-passage 39 of the anti-back member 38 is supported so as to ride on the bottom surface 43 of the space portion 36 of the ball guide 15 and the back flow of the pachinko ball is prevented.

  When the drive unit 1 and the pumping units 2 and 2 are operating in a normal state, as described above, the rotational movement of the main pulley 5 is transmitted to the driven pulley 6 by the endless belt 7, and the driven pulley 6 The pachinko ball is lifted by the rotation of the sprocket 14 connected to. On the other hand, when the rotational movement of the sprocket 14 is hindered due to foreign matters mixed in the ball guide 15 and clogged, the load applied to the driven pulley 6 connected to the sprocket 14 increases and an overload state occurs. As described above, since the diameter of the driven pulley 6 is larger than the diameter of the driven pulley 5, the contact area between the outer peripheral surface of the driven pulley 6 and the endless belt 7 is large, and the frictional force on the contact surface is large. Therefore, when the rotational speed of the driven pulley 6 decreases due to an increase in load, the travel of the endless belt 7 is braked accordingly, and the travel speed of the endless belt 7 decreases. On the other hand, since the contact area between the outer peripheral surface of the main pulley 5 and the endless belt 7 is narrow and the frictional force is small, the contact surface between the endless belt 7 and the outer peripheral surface of the main pulley 5 that has decreased in running speed slips. When the slip occurs, the endless belt 7 is pushed out in the axial direction of the main pulley 5 by being guided to a spiral groove 28 formed on the outer peripheral surface of the main pulley 5, and as shown in FIG. Leave. As the endless belt 7 is detached, the rotational movement of the main pulley 5 is not transmitted to the driven pulley 6, and the rotation of the sprocket 14 is stopped. In this way, excessive rotational force is not continuously transmitted to the sprocket 14 in spite of an overload state, and damage to the components constituting the lifting unit 2 such as the sprocket 14 and the ball guide 15 can be prevented. It becomes like this. Further, the motor 9 itself is not continuously driven to rotate in an overloaded state, and the motor 9 can be prevented from being damaged.

  And since the two pumping parts 2 and 2 are driven by the one motor 9, a double pachinko ball pumping capability can be obtained without increasing the number of motors. Further, even if one endless belt 7 is detached from the main pulley 5, the other endless belt 7 continues to transmit the rotational movement to the driven pulley 6 without being separated from the main pulley 5, so that the pachinko ball is lifted. Can be prevented from stopping completely. Further, the spiral groove 28 formed on the outer peripheral surface of the main pulleys 5 and 5 advances in the right and left directions with respect to the axial direction of the main pulleys 5 and 5 and is intermediate between the main pulleys 5 and 5. Since it faces the direction, the place where the endless belt 7 is detached is an intermediate portion of the drive shaft 22 as shown in FIG. Therefore, the separation location of the endless belt 7 is shared by the main driving pulleys 5 and 5, and it is not necessary to provide a separation location for the endless belt 7 for each of the main driving pulleys 5 and 5. Therefore, the width between the main pulleys 5 and 5 can be shortened, and the width of the frame 4 can be made compact. Further, by checking which endless belt 7 is detached, the stopped rotating body can be easily identified, and the repair work can be quickly started.

Sectional drawing which shows the internal structure of a pachinko machine installation island. The front view of a ball polisher and a ball lifting device. The top view of the drive mechanism of the pachinko ball lifting device concerning the present invention. Sectional drawing of the drive mechanism of the pachinko ball lifting apparatus which concerns on this invention. The cross-sectional view of the lifting part and the driven pulley of the pachinko ball lifting device according to the present invention. XX sectional drawing in FIG. The enlarged view of a drive shaft and a main pulley. The top view which shows the state which the endless belt removed from the main pulley.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drive part 2 Lifting part 4 Frame 5 Main drive pulley 6 Driven pulley 7 Endless belt 8 Tension pulley 9 Motor 14 Sprocket 15 Ball guide 16 Ball receiving recessed part 17 Guide surface 18 Ball biting prevention means 19 Backflow prevention means 28 Groove 101 Pachinko machine Installed Island 102 Pachinko Machine 103 Ball Polishing Device 104 Ball Lifting Device 105 Lifting Pipe 106 Ball Tank

Claims (2)

  A driven pulley that is rotated by a drive source, a driven pulley that is connected to a rotating body that lifts pachinko balls, and the driven pulley that is wound between the driven pulley and the driven pulley to rotate the driven pulley. An endless belt that transmits to the outer peripheral surface of the main pulley, and an uneven pattern that obliquely intersects the circumferential direction is formed on the outer peripheral surface of the main pulley, and when the contact surface between the main pulley and the endless belt slips due to overload, the uneven pattern A drive mechanism for a pachinko ball lifting device, wherein the endless belt is pushed out in the axial direction of the main driving pulley and separated from the main driving pulley.   A drive mechanism of the pachinko ball lifting device according to claim 1, wherein two main pulleys that are integrally rotated by a single drive source, and a driven pulley that rotates independently corresponding to each main pulley. An endless belt is wound around each of the endless belts so that the direction of the uneven pattern formed on the outer peripheral surface of the main driving pulley to be oblique to the circumferential direction is reversed between the main driving pulleys. A drive mechanism for a pachinko ball lifting device, characterized in that a belt detaching direction is an intermediate portion of each of the main driving pulleys.

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