Prize acquisition device and prize acquisition game device

Abstract

A prize acquisition device and a prize acquisition game device are provided that enable efficient operation of a gripping arm and downsizing. [Solution] The gripping device 200 includes a gripping arm 203 for gripping a prize P, a swinging member 203c that pivots the gripping arm 203 so that it can swing up and down, an upper plate 231 for pushing the base end of the gripping arm 203 from above to swing the tip end of the gripping arm 203 upward, a lower plate 241 for pushing the base end of the gripping arm 203 from below to apply a gripping force to the gripping arm 203, and a drive device 220 that drives the upper plate 231 and the lower plate 241 so that they can be displaced up and down. The tip end of the gripping arm 203 swings downward due to its own weight while pivotally supported by the swinging member 203c.

Description

[Technical field]

[0001] The present invention relates to a prize acquisition device and a prize acquisition game device. [Background technology]

[0002] A prize-capturing game device, such as a crane game machine, is used by placing a large number of prizes in a play field formed inside a housing. A player can move a prize-capturing device having a gripping arm within the play field by using an operating means such as a lever or button. After moving the prize-capturing device to the position where a desired prize is placed, the player can grab the prize with the gripping arm and lift it up to the prize outlet in that state to acquire the prize.

[0003] The prize capturing device used in such a prize capturing game device is configured to capture prizes by opening and closing the gripping arms using a drive source such as a motor or an electromagnetic coil. In recent years, energy conservation has progressed, and therefore, efficient operation of multiple gripping arms using fewer drive sources has been considered.

[0004] To address such issues, for example, there is a configuration in which a U-shaped operating member is provided that presses the upper and lower parts of the base end of the gripping arm, and the gripping arm is opened and closed by driving a driving source such as a solenoid (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2004-105470 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, the prize acquisition device described in Patent Document 1 above requires a certain amount of spacing between the upper and lower flanges for pressing the upper and lower parts of the base end of the gripping arm in order to open and close the gripping arm using an operating member, and space is also required to allow the gripping arm to stroke in the up and down direction, resulting in the problem that the prize acquisition device becomes large.

[0007] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a prize acquisition device and a prize acquisition game device that can operate the gripping arm efficiently and enable miniaturization. [Means for solving the problem]

[0008] In order to achieve the above object, the present invention provides a prize acquisition device for acquiring a prize used in a prize acquisition game device, comprising: An arm for grasping a prize; a pivotal support portion that pivotally supports the arm so as to be swingable in the vertical direction; a first operating portion for pressing the base end portion of the arm from above to swing the tip end portion of the arm upward; a second operating portion for applying a gripping force to the arm by pressing the base end of the arm from below; a driving means for driving the first operating portion and the second operating portion so as to be displaceable in the up and down direction, The first operating portion and the second operating portion are configured to be displaceable while changing a relative positional relationship between them, The arm is characterized in that the tip portion of the arm swings downward due to its own weight while being pivotally supported by the pivot support portion.

[0009] The invention described in claim 2 is the prize acquisition device described in claim 1, the driving means includes a single driving source, a first link mechanism for transmitting a driving force of the driving source to the first operating portion, and a second link mechanism for transmitting a driving force of the driving source to the second operating portion; the first link mechanism and the second link mechanism are actuated in conjunction with each other by the drive source, The present invention is characterized in that the first link mechanism and the second link mechanism operate in conjunction with each other by driving the driving source, so that the first operating part and the second operating part are displaced while changing their relative positional relationship.

[0010] The invention described in claim 3 is the prize acquisition device described in claim 1, the first operating portion is displaceable between a first position where the base end of the arm is pressed from above to place the arm in an open state, and a second position which is higher than the first position and where the tip end of the arm swings downward due to its own weight to place the arm in a closed state; the second operating portion is displaceable between a third position where the second operating portion abuts against the base end portion of the arm in a closed state from below, and a fourth position where the second operating portion is lower than the third position and is not abutting against at least the base end portion of the arm in a closed state, The driving means is characterized in that after starting to displace the first operating part from the first position to the second position, it drives the first operating part and the second operating part so that it starts to displace the second operating part from the fourth position to the third position.

[0011] The invention described in claim 4 is the prize acquisition device described in claim 1, a biasing means for biasing the second operating portion upward with a biasing force corresponding to the driving force of the driving means, The gripping force of the arm can be changed by changing the biasing force of the biasing means on the second operating portion.

[0012] The invention described in claim 5 is the prize acquisition device described in claim 1, The arm is characterized by comprising an adjustment means for adjusting the position of the tip of the arm when the arm is in the closed state.

[0013] The invention described in claim 6 is a prize acquisition game device, The present invention is characterized by comprising a prize acquisition device according to any one of claims 1 to 5. Effect of the Invention

[0014] According to the present invention, it is possible to provide a prize acquisition device and a prize acquisition game device that can operate the gripping arm efficiently and can be made compact. [Brief description of the drawings]

[0015] [Figure 1] 1 is a perspective view showing the appearance of a crane game machine according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a front view showing the appearance of the gripping device. [Diagram 3] FIG. 2A is a perspective view of the gripping device as viewed from above, and FIG. 2B is a perspective view of the gripping device as viewed from below. [Figure 4] FIG. 2 is an exploded perspective view illustrating a configuration of a gripping device. [Diagram 5] FIG. 2A is an exploded perspective view of the drive device as viewed from the front side, and FIG. 2B is an exploded perspective view of the drive device as viewed from the rear side. [Figure 6] 10A and 10B are diagrams illustrating an internal configuration of the gripping device when the gripping arms are in an open state. [Figure 7] 11A and 11B are diagrams illustrating the internal configuration of the gripping device when the gripping arms are in a closed state and no gripping force is being applied. [Figure 8] 13A and 13B are diagrams illustrating the internal configuration of the gripping device when the gripping arms are in a closed state and a weak gripping force is being applied. [Figure 9] 13A and 13B are diagrams illustrating the internal configuration of the gripping device when the gripping arms are in a closed state and a gripping force (strong) is being applied. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, a prize acquisition game device (e.g., a crane game machine) according to an embodiment of the present invention will be described with reference to the drawings. However, the scope of the invention is not limited to the illustrated examples. In the following description, parts having the same functions and configurations are given the same reference numerals and their description will be omitted.

[0017] First, the overall configuration of a crane game machine 100 as an example of a prize acquisition game device that can be applied to the present invention will be described with reference to Fig. 1. In the description of Fig. 1, left and right, front and rear, and up and down refer to left and right, front and rear, and up and down based on the state in which a player of the crane game machine 100 sees it from the front side.

[0018] The crane game machine 100 is formed, for example, in a vertically long rectangular parallelepiped shape, and an appropriate number of casters C are attached to the bottom surface. Therefore, the crane game machine 100 can be easily transported by pushing it by staff at an amusement facility such as a game center.

[0019] The crane game machine 100 includes a box-shaped base 1, a play field 2 formed above the base 1, and a ceiling portion 3 covering the play field 2 from above.

[0020] The base 1 houses, for example, a control board having a control unit that performs overall control of the crane game machine 100, and the inside can be accessed by opening an opening / closing door 1a provided on the right side of the front of the base 1. In addition, a money collection door 1b is provided at the bottom center of the front of the base 1 so as to be able to be opened and closed, for collecting coins and coins accepted by coin selectors 84a and 84b (described later).

[0021] The play field 2 has a bottom 2a on which many prizes P are placed, and an internal space is formed by a front plate 2b, a left side plate 2c, a right side plate 2d, a back plate 2e, and the above-mentioned ceiling part 3. The front plate 2b, the left side plate 2c, and the right side plate 2d are made of plate-like members made of transparent glass or resin, so that the internal space can be seen. The front plate 2b is made of, for example, a sliding door, and the inside of the play field 2 can be accessed by opening the sliding door.

[0022] A prize outlet 4 with a square opening is provided at the left front corner of the bottom 2a of the play field 2, and the prize P can be discharged downward. The prize P discharged from the prize outlet 4 falls to the prize removal chamber 6, and the prize P in the prize removal chamber 6 can be removed by opening a door body 7 provided on the left side of the front of the base 1. Here, the door body 7 is made of a plate-like member made of transparent glass or resin, and the inside can be seen through the door body 7. In addition, a partition plate 5 is erected on the bottom 2a so as to surround the right end and rear end of the prize outlet 4, and prevents the prize P placed or piled up on the bottom 2a from falling from the prize outlet 4.

[0023] Above the playfield 2, a gripping device 200 that functions as a prize capturing device is provided, and is suspended by a fixed rod 200a and an extendable rod 200b. Although not shown, two longitudinal rails are provided in parallel on the ceiling 3, extending in the front-rear direction near both the left and right ends, and one lateral rail is installed on the two longitudinal rails. The lateral rails are configured to be movable along the extension direction of the longitudinal rails by a longitudinal motor. A telescopic device that can extend and retract the telescopic rod 200b relative to the fixed rod 200a is provided on the lateral rail so as to be movable left and right along the extension direction of the lateral rail by the lateral motor. In addition, the telescopic device can displace the gripping device 200 attached to the tip of the telescopic rod 200b in the up and down direction by performing the telescopic operation of the telescopic rod 200b.

[0024] The gripping device 200 is configured to include a main body 200A to which an extendable rod 200b is attached, and one or more gripping arms 203 supported by the main body 200A. The gripping arms 203 are attached so as to be openable and closable by an actuator such as a motor provided on the main body 200A, and are capable of gripping the prize P with gripping claws 203a provided at the tip of the gripping device 200. The specific configuration of the gripping device 200 will be described later.

[0025] On the other hand, the operation unit 8 is provided in the center of the front surface of the base 1 and has a box-like shape. An operation lever 81, an operation button 82, and a display unit 83 are arranged on the upper surface of the operation unit 8. The operation lever 81 and the operation button 82 can be operated by the player, and the display unit 83 displays, for example, the remaining number of times that can be played and the remaining time for playing. The player can move the gripping device 200 to any position in the play field 2 by operating the operation lever 81, and can lower the gripping device 200 and perform a gripping operation by operating the operation button 82. When the gripping operation is completed, the gripping device 200 rises and moves above the prize discharge port 4 while maintaining the gripping arm 203 in a closed state, changing the gripping arm 203 to an open state. At this time, if the prize P is held by the holding device 200, the prize P falls toward the prize discharge outlet 4 and is guided to the prize removal chamber 6, so that the player can remove the prize P from the prize removal chamber 6.

[0026] In addition, two coin selectors 84a and 84b are arranged side by side on the front of the operation unit 8, and each of them can accept different types of coins and medals. In this embodiment, for example, the coin selector 84a is configured to be able to accept only 100 yen coins, and the coin selector 84b is configured to be able to accept only 500 yen coins, but this is not limited to this. The coins and medals accepted by the coin selectors 84a and 84b are collected in a collection box at the bottom of the base 1, for example, and can be collected by the manager of the amusement facility unlocking and opening the collection door 1b. In addition, the front of the operation unit 8 is configured to be openable and closable, and for example, the manager of the amusement facility unlocks and opens the front of the operation unit 8, so that maintenance of the operation unit 8 can be performed. In addition, instead of the coin selectors 84a, 84b, or in addition to the coin selectors 84a, 84b, a reader / writer device capable of reading payment information from an IC card or a two-dimensional code may be provided, and credit may be accepted based on the payment information read by the reader / writer device.

[0027] Next, the configuration of the gripping device 200 will be described with reference to FIGS.

[0028] 2 and 3, the gripping device 200 includes a thin disk-shaped main body 200A and a main body case including an upper cover 200c and a lower cover 200d that cover the main body 200A, and a rod attachment part 200e that is attached to a telescopic rod 200b is provided at the center of the upper surface of the main body 200A. A plurality of gripping arms 203 (for example, three) are provided on the side of the main body case so as to protrude at equal intervals in the circumferential direction. In addition, an adjustment screw 251 that regulates the swing range of each of the plurality of gripping arms 203 is provided on the upper surface of the main body case, and the angle of the gripping arms 203 in the closed state can be adjusted by using the adjustment screw 251.

[0029] Next, the internal configuration of the gripping device 200 will be described with reference to FIGS.

[0030] The gripping device 200 is made up of a base substrate 211, an upper plate 231, and a lower plate 241 arranged in this order from above, and is covered by an upper cover 200c and a lower cover 200d.

[0031] The base substrate 211 is formed in a thin disk shape. A rod attachment portion 200e (see FIG. 2) is provided to protrude upward from approximately the center of the upper surface of the base substrate 211. Four spacers 212 are provided at approximately equal intervals near the outer edge of the lower surface of the base substrate 211 so as to extend downward. The spacers 212 are screwed to the lower cover 200d, whereby the internal mechanism of the gripping device 200 is attached to the main body case.

[0032] Furthermore, a plurality of (for example, four) guide shafts 213 are protrudingly provided near the spacer 212 on the lower surface of the base substrate 211. A coil spring 213a is wound around each of the plurality of guide shafts 213. Each of the plurality of guide shafts 213 is inserted into an insertion hole 234 formed in an upper plate 231, which will be described later, and has a function of guiding the movement direction of the upper plate 231. The coil spring 213a is biased in the direction in which it extends, and has a function of pressing the upper plate 231 downward with respect to the base substrate 211.

[0033] Further, a plurality of mounting portions 214 for supporting and fixing the gripping arms 203 are provided on the lower surface of the base substrate 211. In this embodiment, the mounting portions 214 are arranged so that the three gripping arms 203 are attached at approximately equal intervals.

[0034] The arm support parts 203b are attached to the multiple mounting parts 214, respectively. A swing shaft 203f that pivotally supports the swing member 203c is formed at the lower part of the arm support part 203b. The swing member 203c is swingable around the swing shaft 203f, and an arm mounting part 203e for mounting the base end part 203d of the grip arm 203 is formed at the outer end part. Since the grip arm 203 is attached to the main body part 200A in this manner, it is supported so that the tip side (i.e., the side where the grip claw 203a is provided) is heavier than the base end part 203d side, and as a result, the grip arm 203 swings in the direction of closing by its own weight. Note that a biasing member such as a spring that biases the grip arm 203 in the direction of closing may be provided. Further, a plate-shaped blind 203g is engaged with the swinging member 203c to cover the cutouts formed in the upper cover 200c and the lower cover 200d, making it difficult to see inside the gripping device 200. Thus, in this embodiment, the arm support part 203b functions as a pivot part that pivotally supports the gripping arm 203.

[0035] A driving device 220 is attached via a mounting member 220a to an appropriate position on the lower surface of the base substrate 211. The driving device 220 opens and closes the gripping arm 203 by driving a motor 221 (see FIG. 5). The configuration of the driving device 220 will be described later with reference to FIG. 5.

[0036] The upper plate 231 disposed below the base substrate 211 is capable of being pressed by contacting the upper end of the inner end of the oscillating member 203c. A part of the upper plate 231 is cut out in a U-shape, and the driving device 220 is disposed in the cutout. In addition, an insertion hole 234 through which the guide shaft 213 of the base substrate 211 is inserted is provided in the outer peripheral edge of the upper plate 231, and the movement of the upper plate 231 in the vertical direction is guided. At this time, the coil spring 213a wound around the guide shaft 213 presses the lower surface of the base substrate 211 and the upper surface of the upper plate 231, so that the upper plate 231 is biased in a direction away from the base substrate 211. In this embodiment, the coil spring 213a is used to auxiliary separate the base substrate 211 and the upper plate 231, but the coil spring 213a may not be provided.

[0037] A plurality of (for example, four) guide shafts 232 are provided at appropriate positions on the lower surface of the upper plate 231 to protrude downward. A coil spring 232a is wound around each of the plurality of guide shafts. Each of the plurality of guide shafts 232 is inserted into an insertion hole 242 formed in a lower plate 241 (described later) and has a function of guiding the movement direction of the lower plate 241. The coil spring 232a is biased in the direction of extension and has a function of pressing the lower plate 241 downward with respect to the upper plate 231.

[0038] Moreover, a rectangular conversion member 233 is erected facing downward in front of the notch in the lower surface of the upper plate 231. A guide elongated hole 233a extending in the horizontal direction is formed in the conversion member 233, and a guide boss 225c (see FIG. 5) of the rotating member 225 constituting the drive device 220 is inserted through the guide hole 233a. Thus, in this embodiment, the upper plate 231 functions as a first operating part.

[0039] The lower plate 241 disposed below the upper plate 231 is capable of being pressed by contacting the lower end of the inner end of the swinging member 203c. The lower plate 241 is partially cut out in a U-shape, and is aligned with the position of the cutout of the upper plate 231 in the vertical direction, and the driving device 220 is disposed in this cutout portion. In addition, an insertion hole 242 through which the guide shaft 232 of the upper plate 231 is inserted is provided at an appropriate position of the lower plate 241, and the vertical movement of the lower plate 241 is guided. At this time, the coil spring 232a wound around the guide shaft 232 presses the lower surface of the upper plate 231 and the upper surface of the lower plate 241, so that the lower plate 241 is biased in a direction away from the upper plate 231. In this embodiment, the coil spring 232a is used to auxiliary separate the upper plate 231 and the lower plate 241, but the coil spring 232a may not be provided.

[0040] A contact area 243 with which lower plate support protrusion 225d of rotation member 225 constituting drive device 220 comes into contact is formed in front of the notch in the lower surface of lower plate 241, restricting downward movement of lower plate 241. Thus, in this embodiment, lower plate 241 functions as a second operating part.

[0041] As shown in FIGS. 5(a) and 5(b), the driving device 220 is configured to include a motor 221, a wheel portion 222, a main spring 223, a sub-spring 224, and a rotating member 225.

[0042] The motor 221 as a drive source is, for example, a pulse motor, and a motor shaft 221a is provided protruding forward at a position slightly eccentric from the center of the tip. The motor shaft 221a can rotate in the forward and reverse directions by driving the motor 221. Note that, although a pulse motor is used as the actuator in this embodiment, something other than a pulse motor may be applied, for example, an actuator driven by an electromagnetic coil may be used.

[0043] The wheel portion 222 is attached to the motor 221 with the motor shaft 221a inserted through the center, and can rotate together with the motor shaft 221a. The wheel portion 222 has numerous slits formed on its outer periphery, and the amount of rotation can be detected, for example, by detecting the passage of the slits with a photosensor, and the motor 221 can be controlled based on this to open and close the arm 203. In other words, the wheel portion 222 functions as an encoder. In addition, a wheel-side boss 222a is provided eccentrically from the center of the wheel portion 222 and protrudes forward, supporting one end of the main spring 223 and the sub-spring 224.

[0044] The main spring 223 is made of a helical spring, and both ends are formed into a hook shape. One of the hook-shaped portions at both ends is a wheel-side engaging portion 223a that can be engaged with and disengaged from the wheel-side boss 222a, and the other is an operating portion-side engaging portion 223b that can be engaged with and disengaged from an operating portion-side boss 225b of the rotating member 225 described later.

[0045] The sub-spring 224 is made of a wound spring, and both ends are formed in a ring shape. One of the ring-shaped parts at both ends is a wheel-side holding part 224a inserted into the wheel-side boss 222a, and the other is an actuation part-side holding part 224b inserted into the actuation part-side boss 225b of the rotating member 225. In this embodiment, the main spring 223 is disposed on the inner periphery side of the sub-spring 224. In this case, the actuation part-side engaging part 223b of the main spring 223 is disposed outside the actuation part-side holding part 224b of the sub-spring 224, and the wheel-side engaging part 223a of the main spring 223 is disposed outside the wheel-side holding part 224a of the sub-spring 224. The arrangement of the main spring 223 and the sub-spring 224 is not limited to this, and can be set appropriately.

[0046] The main spring 223 and the sub spring 224 configured as described above are inserted through the motor shaft 221a, and are disposed around the axis of the motor shaft 221a.

[0047] Further, the sub-spring 224 applies a biasing force to the rotating member 225, but has a smaller spring constant than the main spring 223, that is, is configured to apply a smaller biasing force to the rotating member 225 than the main spring 223.

[0048] In this embodiment, the gripping force of the gripping arm 203 is adjusted using two springs, the main spring 223 and the sub spring 224, but a configuration in which only one of them is provided may also be used. In addition, it is preferable that the biasing forces of the main spring 223 and the sub spring 224 are appropriately set in accordance with the configuration of the gripping device 200.

[0049] The rotating member 225 is formed in a disk shape, and a support hole 225a is opened in the center, through which the tip of the motor shaft 221a is inserted. An operating part side boss 225b is protruding toward the rear side at a position eccentric from the center on the rear side of the rotating member 225, into which an operating part side engaging part 223b of the main spring 223 is engaged and into which an operating part side holding part 224b of the sub spring 224 is inserted. In addition, a guide boss 225c and a lower plate support protrusion 225d are protruding forward at an appropriate interval at a position eccentric from the center on the front side of the rotating member 225. The guide boss 225c is inserted into a guide long hole 233a of a conversion member 233 provided on the upper plate 231, and the lower plate support protrusion 225d abuts against an abutment area 243 of the lower plate 241 from below. Furthermore, a detection piece 225e is provided protruding from an appropriate position on the outer periphery of the rotating member 225. The detection piece 225e is detected by a photosensor (not shown), thereby making it possible to detect the position of the rotating member 225. In this manner, in this embodiment, the rotating member 225 is capable of displacing the upper plate 231 and the lower plate 241 while changing the relative positional relationship between them.

[0050] Since the driving device 220 is configured as described above, when the motor 221 is driven and the motor shaft 221a rotates in the clockwise direction, the wheel portion 222 rotates in the clockwise direction together with the motor shaft 221a. The wheel side boss 222a of the main spring 223 engages with the wheel side engaging portion 223a and is pressed, generating a biasing force in the clockwise direction. The wheel side boss 222a of the sub-spring 224 is also held and pressed by the wheel side holding portion 224a, generating a biasing force in the clockwise direction. Since the operating part side engaging portion 223b of the main spring 223 engages with the operating part side boss 225b of the rotating member 225, and the operating part side holding portion 224b of the sub-spring 224 is held by the operating part side boss 225b, the biasing forces of the main spring 223 and the sub-spring 224 generated by the clockwise rotation of the wheel portion 222 are applied to the rotating member 225. As a result, the rotating member 225 rotates in the clockwise direction.

[0051] On the other hand, in the driving device 220, when the motor 221 is driven and the motor shaft 221a rotates counterclockwise, the wheel section 222 rotates counterclockwise together with the motor shaft 221a. When the main spring 223 is in an extended state, the wheel side engaging section 223a is disengaged from the wheel side boss 222a of the wheel section 222, and the urging force of the main spring 223 is interrupted. On the other hand, the wheel side holding section 224a of the sub spring 224 continues to be held by the wheel side boss 222a, so that the urging force of the sub spring 224 is being transmitted. In this state, the urging force of the sub spring 224 generated by the counterclockwise rotation of the wheel section 222 is applied to the rotating member 225, and as a result, the rotating member 225 rotates counterclockwise.

[0052] In this manner, in this embodiment, the driving device 220 functions as a driving means. Also, in this embodiment, the wheel portion 222, the main spring, the sub-spring 224, and the rotating member 225 function as a first link mechanism and also function as a second link mechanism.

[0053] The operation of the gripping device 200 configured as above will be described with reference to Figures 6 to 9. For the sake of explanation, the upper cover 200c and the lower cover 200d are omitted in Figures 6 to 9.

[0054] FIG. 6 shows the gripping arm 203 in an open state. In the state shown in FIG. 6, the motor 221 is driven and the wheel portion 222 rotates counterclockwise. At this time, the engagement state between the main spring 223 and the wheel portion 222 is released, so the urging force of the main spring 223 against the rotating member 225 is cut off and only the urging force of the sub-spring 224 is transmitted to the rotating member 225. In the state shown in FIG. 6, the rotating member 225 rotates counterclockwise and the guide boss 225c inserted into the guide long hole 233a of the conversion member 233 is at approximately the 9 o'clock position. When the guide boss 225c rotates counterclockwise from the 12 o'clock position, the conversion member 233 is pushed down, and the upper plate 231 attached to the conversion member 233 also moves downward. Meanwhile, as the rotating member 225 rotates counterclockwise from the 6 o'clock position, the lower plate support protrusion 225d slides on the contact area 243 of the lower plate 241 and pushes up the lower plate 241. Thereafter, the lower edge of the conversion member 233 abuts against the upper surface of the lower plate 241, restricting the up-down movement of both the upper plate 231 and the lower plate 241. In this state, the upper plate 231 presses the upper edge of the swinging member 203c to which the gripping arm 203 is attached, and the gripping arm 203 is opened.

[0055] FIG. 7 shows a state in which the gripping arm 203 is in a closed state and gripping force is not applied by pressing the lower plate 241. In the state shown in FIG. 7, the motor 221 is driven, and the wheel portion 222 rotates clockwise from the state shown in FIG. 6. At this time, the wheel side engaging portion 223a of the main spring 223 engages with the wheel side boss 222a of the wheel portion 222, so that the main spring 223 applies a biasing force to the rotating member 225. However, the contraction force of the main spring 223 is in a small state. When the motor 221 is driven and the rotating member 225 rotates clockwise by the biasing forces of the main spring 223 and the sub spring 224, the guide boss 225c inserted in the guide long hole 233a of the conversion member 233 is at approximately the 11 o'clock position. As a result, the upper plate 231 reaches approximately the top dead center, and as a result, the swinging member 203c to which the gripping arm 203 is attached swings due to the weight of the gripping arm 203, and the gripping arm 203 is displaced to the closed state. Meanwhile, the lower plate support protrusion 225d of the rotating member 225 supporting the lower surface side of the lower plate 241 is at approximately the 7 o'clock position. As a result, the lower plate 241 is brought into contact with the lower plate support protrusion 225d by the biasing force of the coil spring 232a wound around the guide shaft 232 connecting the upper plate 231 and the lower plate 241, and the contact state between the lower end edge of the swinging member 203c and the lower plate 241 is released, and the gripping force of the gripping arm 203 by the driving device 220 is not generated. That is, in the state shown in FIG. 7, it can be said that the movement of the upper plate 231 from the lowest point to the top dead center is started.

[0056] In addition, in this embodiment, an adjustment screw 251 is provided corresponding to each of the three gripping arms 203, and by tightening the adjustment screw 251, the tip advances downward and abuts against the abutment portion 203h of the oscillating member 203c, pushing it downward, so that the angle of the gripping arm 203 when it is in the closed state can be changed.

[0057] FIG. 8 shows a state in which the gripping arm 203 is in a closed state and a gripping force is applied by pressing the lower plate 241. In the state shown in FIG. 8, the motor 221 is driven, and the wheel part 222 rotates further in the clockwise direction from the state shown in FIG. 7. At this time, the main spring 223 and the sub spring 224 are contracted, and as a result, the urging force of the main spring 223 and the sub spring 224 against the rotating member 225 becomes large. Therefore, when the motor 221 is driven, the urging force of the main spring 223 and the sub spring 224 can rotate the rotating member 225 further in the clockwise direction. In the state shown in FIG. 8, the guide boss 225c inserted into the guide long hole 233a of the conversion member 233 is located at approximately the 1 o'clock position, while the lower plate support protrusion 225d is located at approximately the 9 o'clock position. As a result, the upper plate 231 is at approximately the top dead center position, while the lower plate 241 is pressed from the lower surface side by the lower plate support protrusion 225d, and the lower plate 241 moves upward against the urging force of the coil spring 232a wound around the guide shaft 232 connecting the upper plate 231 and the lower plate 241, and in the state shown in FIG. 8, the lower end edge of the swing member 203c to which the gripping arm 203 is attached is pressed upward by the lower plate 241. That is, in the state shown in FIG. 8, the upward movement of the lower plate 241 is restricted by the swing member 203c abutting against the upper plate 231, and thus the clockwise rotation of the rotating member 225 is also restricted. On the other hand, the wheel part 222 can rotate in the clockwise direction by the drive of the motor, and as a result, the main spring 223 and the sub spring 224 contract, the urging force on the rotating member 225 increases, and the gripping force of the gripping arm 203 increases. In other words, in the state shown in Figure 8, after the upper plate 231 starts moving from its lowest point to its top dead point, the lower plate 241 starts moving from its bottom dead point (the position where the lower plate support protrusion 225d is at 6 o'clock) to its top point.

[0058] 9 shows a state in which the gripping arm 203 is in a closed state and a gripping force greater than that in the state shown in FIG. 8 is applied. In the state shown in FIG. 9, the motor 221 is driven and the wheel part 222 is rotated further clockwise from the state shown in FIG. 8, while the movement of the rotating member 225 is still restricted. Therefore, the main spring 223 and the sub spring 224 are contracted more than in the state shown in FIG. 8, and as a result, the urging force of the main spring 223 and the sub spring 224 against the rotating member 225 is greater than in the state shown in FIG. 8. Therefore, the pressing force of the lower plate support protrusion 225d of the rotating member 225 against the lower plate 241 is increased, and the gripping force of the gripping arm 203 is greater than that in the state shown in FIG. 8.

[0059] In this manner, in this embodiment, it can be said that the upper plate 231 is capable of being displaced between a first position in which the base end of the gripping arm 203 is pressed from above to open the gripping arm 203, and a second position which is higher than the first position and in which the tip end of the gripping arm 203 swings downward due to its own weight to close the gripping arm 203.

[0060] In addition, in this embodiment, it can be said that the lower plate 241 is displaceable between a third position in which the lower plate 241 abuts the base end of the gripping arm 203 from below, and a fourth position in which the lower plate 241 is in a non-contact state with the base end of the gripping arm 203, which is at least in a closed state.

[0061] As described above, according to this embodiment, the gripping device 200 includes the gripping arm 203 for gripping the prize P, the swinging member 203c for pivotally supporting the gripping arm 203 so that it can swing up and down, the upper plate 231 for pushing the base end of the gripping arm 203 from above to swing the tip end of the gripping arm 203 upward, the lower plate 241 for pushing the base end of the gripping arm 203 from below to apply a gripping force to the gripping arm 203, and the drive device 220 for driving the upper plate 231 and the lower plate 241 so that they can be displaced up and down. The gripping arm 203 swings its tip downward by its own weight while pivotally supported by the swinging member 203c. As a result, the gripping arm can be operated efficiently and the prize acquisition device can be made smaller.

[0062] According to this embodiment, the drive device 220 has a motor 221, a wheel part 222, a main spring 223, a sub-spring 224, and a rotating member 225 (first link mechanism) for transmitting the driving force of the motor 221 to the upper plate 231, and a wheel part 222, a main spring 223, a sub-spring 224, and a rotating member 225 (second link mechanism) for transmitting the driving force of the motor 221 to the lower plate 241. The first link mechanism and the second link mechanism operate in conjunction with each other by driving the motor 221. The first link mechanism and the second link mechanism operate in conjunction with each other by driving the motor 221, so that the upper plate 231 and the lower plate 241 are displaced while changing their relative positional relationship. As a result, it is possible to suppress an increase in the number of parts and to miniaturize the prize acquisition device.

[0063] According to this embodiment, the upper plate 231 can be displaced between a first position where the base end of the gripping arm 203 is pressed from above to open the arm 203, and a second position where the tip of the gripping arm 203 swings downward under its own weight to close the arm. The lower plate 241 can be displaced between a third position where the base end of the gripping arm 203 in the closed state is abutted from below, and a fourth position where the base end of the gripping arm 203 in the closed state is not abutted from below, and a fourth position where the base end of the gripping arm 203 in the closed state is not abutted from below. The driving device 220 drives the upper plate 231 and the lower plate 241 so that the lower plate 241 starts to be displaced from the fourth position to the third position after starting to displace the upper plate 231 from the first position to the second position. As a result, the movable ranges of the first operating unit and the second operating unit can be made compact, and the prize acquisition device can be made smaller.

[0064] Furthermore, according to this embodiment, the main spring 223 and the sub spring 224 urge the lower plate 241 upward with a urging force corresponding to the driving force of the driving device 220. It is possible to change the gripping force of the gripping arm 203 by changing the urging force of the main spring 223 and the sub spring 224 against the lower plate 241. As a result, it becomes possible to adjust the gripping force with a simple configuration.

[0065] According to this embodiment, the adjustment screw 251 can adjust the positions of the tips of the gripping arms 203 when the gripping arms 203 are in a closed state. As a result, the state of the arms can be changed depending on the type of prize, which allows for variety in the game.

[0066] The actions and effects described in the embodiments of the present invention are merely a list of the most preferable actions and effects resulting from the present invention, and the actions and effects of the present invention are not limited to those described in the embodiments of the present invention. [Explanation of symbols]

[0067] 100 Crane game machine (prize-winning game device) 200 Grasping device (prize acquisition device) 203 Grasping Arm 203c Swinging member (support part) 220 Driving device (driving means) 221 Motor (drive source) 222 Wheel section (first link mechanism, second link mechanism) 223 Main spring (first link mechanism, second link mechanism, biasing means) 224 Sub-spring (first link mechanism, second link mechanism, biasing means) 225 Rotating member (first link mechanism, second link mechanism) 231 Upper plate (first operating part) 241 Lower plate (second operating part) 251 Adjustment screw (adjustment means)

Claims

1. A prize acquisition device for acquiring a prize used in a prize acquisition game device, comprising: An arm for grasping a prize; a pivotal support portion that pivotally supports the arm so as to be swingable in the vertical direction; a first operating portion for pressing the base end portion of the arm from above to swing the tip end portion of the arm upward; a second operating portion for applying a gripping force to the arm by pressing the base end of the arm from below; a driving means for driving the first operating portion and the second operating portion so as to be displaceable in the up and down direction, The first operating portion and the second operating portion are configured to be displaceable while changing a relative positional relationship between them, The prize acquisition device is characterized in that the arm is supported by the support portion and the tip thereof swings downward due to its own weight.

2. the driving means includes a single driving source, a first link mechanism for transmitting a driving force of the driving source to the first operating portion, and a second link mechanism for transmitting a driving force of the driving source to the second operating portion; the first link mechanism and the second link mechanism are actuated in conjunction with each other by the drive source, The prize acquisition device described in claim 1, characterized in that the first link mechanism and the second link mechanism operate in conjunction with each other by driving the driving source, thereby displacing the first operating part and the second operating part while changing their relative positional relationship.

3. the first operating portion is displaceable between a first position where the base end of the arm is pressed from above to place the arm in an open state, and a second position which is higher than the first position and where the tip end of the arm swings downward due to its own weight to place the arm in a closed state; the second operating portion is displaceable between a third position where the second operating portion abuts against the base end portion of the arm in a closed state from below, and a fourth position where the second operating portion is lower than the third position and is not abutting against at least the base end portion of the arm in a closed state, The prize acquisition device described in claim 1, characterized in that the driving means drives the first operating unit and the second operating unit so that after the first operating unit starts to displace from the first position to the second position, the second operating unit starts to displace from the fourth position to the third position.

4. a biasing means for biasing the second operating portion upward with a biasing force corresponding to the driving force of the driving means, 2. The prize acquisition device according to claim 1, wherein the gripping force of the arm can be changed by changing the biasing force of the biasing means on the second operating portion.

5. 2. The prize acquisition device according to claim 1, further comprising an adjustment means for adjusting the position of the tip of the arm when the arm is in a closed state.

6. A prize acquisition game device comprising the prize acquisition device according to any one of claims 1 to 5.

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