JP5360712B2 - Control device for gaming machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control device for a game machine, effectively preventing the situations such as fraudulent replacement and fraudulent remodeling of a control element. <P>SOLUTION: In a control device 1, right and left ones out of the respective screw holding parts 9, 9 ... provided on an upper cover 6 to be easily cut are screwed to screw engagement bodies 20, 20 of a lower cover 5 by screws 13, thereby joining the upper cover 6 and the lower cover 5. The respective screws 13, 13 utilize a one-way clutch mechanism, so that when a head part 15 is rotated in the normal direction, a needle built in the head part 15 transmits the turning force to a shaft member 14 to rotate the shaft member 14, and when the head part 15 is rotated in the reverse direction, the needle does not transmit the turning force to the shaft member 14, thus holding the shaft member 14 in a non-rotating state. Further, when the head part 15 is rotated in the normal direction with strong force, the needle is held without being pressed to the shaft member 14. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a control device for gaming machines used in gaming machines such as pachinko machines and slot machines.

  A pachinko machine, which is a type of gaming machine, is provided with a control device, and control elements such as a ROM and a CPU are installed on an internal substrate. Since such a control element controls the operation content of the pachinko machine, the pachinko machine may be illegally replaced or modified so that the pachinko machine operates conveniently for the player. For this reason, in order to prevent such injustice, the conventional control device for gaming machines includes an upper cover having a plurality of severable screw holding portions at both left and right edges, and a lower cover that matches the upper cover. To cover the substrate on which the control element is installed and to fix each of the left and right screw holding portions with a caulking screw (a surface perpendicular to the outer surface of the proximal end portion and an outer surface of the proximal end portion). And a screw projection having a slanted surface on the base end) and screwed to the lower cover so as not to be removed by a screwdriver or the like, so that the upper cover is removed unless the screw holding portion is cut. There is a configuration in which a trace of removal of the upper cover remains so that it cannot be performed (Patent Document 1).

  However, the control device for a gaming machine provided with the above-described severable screw holding portion can rotate the screw using the holes when the holes of the caulking screw are drilled with an electric drill or the like. Therefore, since the upper cover can be removed without cutting the screw holding portion, in recent years, it has been impossible to effectively prevent unauthorized replacement and unauthorized modification of the control element. Therefore, the applicant has proposed a gaming machine control device in which one of the left and right screw holding portions of the upper cover is screwed to the lower cover with screws using a so-called one-way clutch mechanism (Japanese Patent Application No. 2008- 143223).

  The screw using the one-way clutch mechanism has a cylindrical needle incorporated in the head portion for transmitting the rotational force to the head portion to the shaft member. When rotated, the needle is constrained by the wedge-shaped portion in the head portion and pressed against the shaft member so that the shaft member rotates. When the head portion is rotated in the reverse direction, the needle The pressing to the shaft member is released, so that the shaft member does not rotate. Therefore, according to the control device for gaming machine previously proposed by the applicant, even if a hole is drilled in the head of the screw with an electric drill or the like, the screw cannot be rotated using those holes, Since the upper cover cannot be removed without cutting the screw holding portion, it is possible to effectively prevent unauthorized replacement and unauthorized modification of the control element.

JP-A-11-000444

  However, in the gaming machine control device in which the upper cover and the lower cover are screwed together with screws using the above-described one-way clutch mechanism, when the screws are rotated in the forward direction with a very strong force, the needles are moved within the head portion. If the head is rotated in the opposite direction with respect to the shaft member after being fixed by the wedge-shaped portion, the shaft member rotates without releasing the pressing of the needle against the shaft member. There is a possibility that the upper cover can be removed without cutting the screw holding portion.

  An object of the present invention is to solve the problems of the above conventional control device for gaming machines, do not allow rotation of each screw in the reverse direction once screwed to the lower case, and illegally replace the control element. An object of the present invention is to provide a practical control device for a gaming machine that can prevent remodeling very effectively.

Of the present invention, the invention described in claim 1 is such that the substrate on which the control element is installed is covered by the upper cover and the lower cover that matches the upper cover, and the screw that is screwed into the lower cover. A screw holding part that holds the screw is provided on the edge of the upper cover via a severable mounting piece, and the upper cover is lowered by screwing the screw held in the screw holding part with the lower cover. A control device for a gaming machine that holds the cover in a closed state and separates the upper cover and the lower cover by cutting the screw holding portion screwed with the lower cover from the upper cover, screws, provided with a one-way clutch mechanism, when rotating the head portion in the forward direction, in a state where the needle incorporated in the head portion is pressed against the shaft member, together with the shaft member head portion On the other hand, when the head portion is rotated in the reverse direction, the pressing state of the needle against the shaft member is released, and only the head portion rotates, and the head portion is moved in the forward direction with a strong force exceeding the threshold value. When the needle is rotated, the needle is held without being pressed against the shaft member, and only the head part rotates.

In the control device according to the present invention, the screw includes a shaft member provided with a thread groove for screwing with the lower cover at a tip, and a plurality of screws arranged around the shaft member along the axial direction of the shaft member. A cylindrical needle and a head portion provided with a needle housing cavity having a tapered horizontal cross section for housing each needle, and at the tip of each needle housing cavity of the head portion, Non-pressing state holding means for holding the needle in a state where it is not pressed against the shaft member may be provided .

Further, in the control device according to the present invention, the non-pressing state holding means may be a groove having an arcuate horizontal section provided outside the tip end of the needle housing cavity .

  The control device for a gaming machine according to claim 1 (hereinafter simply referred to as a control device) has a screw having a so-called one-way clutch mechanism, and when the head portion is rotated in the forward direction, the shaft member is the head portion. The upper cover and the lower cover can be screwed together. However, even if the head portion is rotated in the reverse direction, only the head portion is rotated in the reverse direction, and the screw shaft member is screwed into the lower cover. The combined state is reliably maintained. In addition, when the head portion is rotated in the positive direction with a strong force equal to or greater than the threshold value, when the head portion is rotated in the positive direction with a strong force equal to or greater than the threshold value, the rotational force of the head portion is adjusted to the shaft member. The needle that is transmitted to the shaft member is held in a state where it is not pressed against the shaft member, and only the head portion rotates, and the needle is not pressed against the shaft member. Therefore, according to the control device of claim 1, it is possible to effectively prevent a situation in which the upper cover is illegally removed without cutting the attachment piece, and the control element is illegally replaced or modified. can do.

By configuring the control device according to the present invention as in paragraph 0009 , when the head portion is rotated with a strong force in the forward direction, the needle for transmitting the rotational force of the head portion to the shaft member is not Since the pressing state holding unit holds the shaft member without contacting the shaft member, the rotational force is not transmitted to the shaft member, and the shaft member is held without rotating. Therefore, it is possible to very effectively prevent a situation in which the upper cover is illegally removed and the control element is illegally replaced or illegally modified without cutting the attachment piece.

By configuring the control device according to the present invention as in the paragraph 0010 , since the non-contact state holding means of the screw is a groove having an arcuate horizontal section provided outside the tip of the needle housing cavity, the head When the portion is rotated in the positive direction with a strong force, the needle fits smoothly into the groove which is the non-contact state holding means (that is, the non-contact state holding means functions effectively). Therefore, it is possible to very effectively prevent a situation in which the upper cover is illegally removed without cutting the mounting piece and the control element is illegally replaced or modified. In addition, it can be constructed at low cost.

It is a front view of the control device for gaming machines. It is explanatory drawing which shows the AA line cross section in FIG. 1 (b is an enlarged view of the wavy line part in a). It is the front view (a) and top view (b) of a screw. It is sectional drawing (AA sectional drawing in FIG. 3) of a screw (b is an enlarged view of the wavy line part in a). It is a disassembled perspective view which partially cuts and shows the head part of a screw. It is an exploded view of the shaft member of a screw. It is explanatory drawing which shows the front of the lower fixed wing | blade of a lower cover. It is explanatory drawing which shows the example of a change of a screw. It is explanatory drawing (plan view) which shows the example of a change of a control ring. It is explanatory drawing which shows the example of a change of a control ring. (A is a plan view and b to d are side views). It is explanatory drawing which shows the example of a change of a screw | thread (a shows the state which reversely rotates a head part, b shows the state which makes a head part rotate forward with strong force exceeding a threshold value. ).

[Control device structure]
Hereinafter, a control device according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of the control device 1, and FIG. 2 is an explanatory view showing a cross section taken along the line AA in FIG. 1 (note that FIG. (Enlarged) The control device 1 includes a substrate 4 on which various control elements such as a ROM 8 and a CPU are mounted, a transparent synthetic resin upper cover 6 and a lower cover 5.

The upper cover 6 is formed in a wide box shape, and upper fixed wings 16 and 16 having a vertically long rectangular outer shape (outer shape when viewed from the front) are provided on both left and right sides. A locking hole 12 is formed in the upper edge of each upper fixing wing 26, 26. Further, below the locking holes 12, 12, four substantially cylindrical screw holding portions 9, 9,... Are fixed to the upper and lower sides by detachable mounting pieces 10, 10, respectively, located on the left and right. The wings 16 are integrally connected to the front surface of the wing 16 and protrude rearward.

  Further, as shown in FIG. 2, a partition plate 35 is formed in the approximate center of each screw holding portion 9, and a screw insertion hole 18 is formed in the center of the partition plate 35. Further, on the back side of the partition plate 35, two elastic pieces 28 are provided so as to protrude rearward. And in each screw holding part 9, 9, ..., the screw 13 using what is called a one-way clutch mechanism is inserted in the screw insertion hole 18, and is hold | maintained in the state by which the front-end | tip was hold | gripped by the elastic pieces 28,28. .

  3A, 3B, and 4 are a front view, a plan view, and a horizontal cross-sectional view (cross-sectional view taken along line AA in FIG. 3) of the screw 13, respectively. And a head member 15 for rotating the shaft member 14 only in one direction. FIG. 5 is an exploded perspective view of the head portion 15, and the head portion 15 functions as a cap body 21 that functions as a housing, a core 22 that is incorporated inside the cap body 21, and a lower lid of the cap body 21. Only when the lid body 23 and the cap body 21 are rotated in a predetermined direction, the plurality of needles 31, 31... That transmit the rotational force to the shaft member 14 and the needles 31, 31. And a spring member 53 for the purpose.

  The cap body 21 is integrally formed of a synthetic resin in a shape like a ridge in which a spherical portion S is continuously provided outside the cylindrical portion T. A flat rectangular (planar view) thread groove 7 is formed on the outer surface in the diameter direction. Further, a plurality of convex portions 27, 27... For fixing the core 22 are formed inside the cylindrical portion T of the cap body 21. Further, a step 50 for positioning the built-in core 22 is provided at the boundary between the cylindrical portion T and the spherical portion S inside the cap body 21, and inside the center of the spherical portion S. A pressing projection 51 is provided for contacting the base end of the shaft member 14 when screwed.

  On the other hand, the needles 31, 31,... Are formed in a vertically long cylindrical shape from metal. The outer periphery is covered with a soft synthetic resin.

  The core 22 is formed in a flat cylindrical shape, and a plurality of concave portions 29, 29,... Meshing with the convex portions 27 of the cap body 21 are formed on the outer periphery. Further, a restriction hole 61 for restricting the relative distance between the needles 31, 31... And the shaft member 14 is provided at the center of the core 22. The regulation hole 61 is not circular, but is formed with a large diameter portion 62 having a long distance from the center and a small diameter portion 63 having a short distance from the center for each predetermined angle. Further, the inner wall of the restriction hole 61 has five spring storage bodies 66, 66,... Provided with a storage groove 65 having a U-shaped horizontal section for storing the tip of a spring portion 55 of the spring member 53 described later. Are fixed at regular intervals. And the shaft hole 30 for inserting the shaft member 14 is formed in the inner wall of these spring accommodating bodies 66, 66. Further, needle holes 32, 32, which are needle housing cavities for inserting the needle 31 are formed by the side walls along the axial direction of the spring housing bodies 66, 66,. It is in the state that was done.

In each of the needle holes 32, 32,..., The outer peripheral surface of the shaft member 14 inserted into the shaft hole 30 and the inner wall of the restricting hole 61 as the distance from the side closer to the storage groove 65 of the spring storage body 66 increases. It is in the state which inclined so that the distance of may become short. That is, the distance from the outer peripheral surface of the shaft member 14 to the portion of the inner wall of the restriction hole 61 closer to the storage groove 65 is longer than the diameter of the needle 31 and is far from the storage groove 65 of the inner wall of the restriction hole 61. In the side portion, the distance from the outer peripheral surface of the shaft member 14 is shorter than the diameter of the needle 31. In each needle hole 32, 32,..., A wedge-shaped sandwiching portion (shaded portion G in FIG. 4) is formed by the inner wall (that is, the inclined surface) of the restriction hole 61 and the outer periphery of the shaft member 14. .

  On the other hand, the spring member 53 is integrally formed of a metal plate, and has a substantially U-shaped tip on the surface of an annular connecting portion 56 having a through hole 40 through which the shaft member 14 is inserted. A plurality of spring portions 55, 55,... The lid body 23 is formed in a disc shape, and a bearing hole 24 for inserting the shaft member 14 is formed in the center. Furthermore, a protrusion 44 for fitting into the cap body 21 is formed on the surface.

  FIG. 6 shows a state in which the shaft member 14 is disassembled. The shaft member 14 includes a shaft body 43 formed in a long and substantially cylindrical shape, and a flange body formed in a wide disk shape. 41. A screw groove 45 for screwing the flange body 41 is formed in the center of the outer surface of the base end of the shaft main body 43, and a screw groove for screwing with the lower cover 5 on the outer periphery at the front end. 42 is provided around. In addition, a flat donut-shaped regulation ring 52 is fitted and crimped at a position slightly proximal from the center of the shaft main body 43, and protrudes outward from the shaft main body 43 with a constant width. Yes. Furthermore, a screw protrusion 46 for screwing onto the shaft body 14 is provided at the center of the back surface of the flange body 41.

The shaft member 14, the cap member 21, the core 22, the lid 23, when the needle 31 ... and the spring member 53 assembling the screw 13, first, the needle holes 32, 32 ..., the receiving groove 65 of the core 22 , 65 ..., The needles 31, 31... And the spring portions 55, 55... Of the spring member 53 are incorporated (the coupling portions 56 of the spring members 53 are incorporated so as to be positioned on the distal end side of the core 22). Thereafter, the lid body 23 is disposed on the distal end side of the core 22, and the shaft main body 43 of the shaft member 14 is inserted into the insertion hole 24 of the overlapping lid body 23 and the shaft hole 30 of the core 22 (the distal end of the shaft member 14. And the flange body 41 is screwed to the base end of the inserted shaft main body 14 (by assembling in such a manner, the shaft member 14 becomes the core 22, the spring member 53, and the cover). It will be in a state where it cannot be removed from the body 23). Further, the core 22 integrated with the shaft member 14 is fitted into the cap body 21 together with the flange body 41 of the shaft member 14 overlapped on the base end side (a concave portion 29 on the outer periphery of the core 22). 29,..., 29. Then, the cap body 21 is closed and fixed by the lid body 23 by fitting the projection 44 of the lid body 23 to the distal end side of the cap body 21 into which the core 22 is fitted. In the assembled screw 13, a predetermined amount (about 1.0 mm) of gap is formed between the pressing protrusion 51 inside the cap body 21 and the flange body 41.

In the screw 13 configured as described above, when the cap body 21 is rotated clockwise by a screwdriver using the screw grooves 7 and 7, the core 22 fitted to the cap body 21 has a shaft member. Rotate clockwise relative to 14 (X direction in FIG. 4A). When the core 22 rotates in this manner, the needles 31, 31... That are in contact with the shaft member 14 are caused to move into the storage groove 65 in the needle hole 32 by the frictional force with the shaft member 14 and the biasing force of the spring member 53. Is pushed out in the direction away from (ie, in the direction of the end face 38 of the spring housing 66). The pushed-out needles 31, 31,... Are sandwiched and fixed by a wedge-shaped sandwiching portion G formed by the inner wall of the restriction hole 61 and the outer periphery of the shaft member 14. When the needles 31, 31,... Are sandwiched between the sandwiching portions G, the pressing force of the needles 31, 31 ... on the shaft member 14 increases, and the core 22 cannot rotate relative to the shaft member 14. Therefore, the shaft member 14 rotates clockwise as the cap body 21 and the core 22 rotate clockwise (see FIG. 4A).

Further, when the cap body 21 is rotated clockwise with a strong force by a screwdriver, as shown in FIG. 4C, each needle 31 pushed out in the direction away from the storage groove 65 in the needle hole 32, Part of the surface 31 (. Soft synthetic resin P) (the portion in contact with the restriction hole 61 and the shaft member 14) collapses. Therefore, the needles 31, 31... Are not pressed against the shaft member 14, so that the core 22 can rotate relative to the shaft member 14. Therefore, even if the cap body 21 and the core 22 rotate, the shaft member 14 is held without rotating.

In addition, when the cap body 21 is rotated counterclockwise in a state where it is sandwiched by the sandwiching portion G to such an extent that the surfaces of the needles 31, 31... Do not collapse, they are fitted to the cap body 21. The core 22 rotates counterclockwise (Y direction in FIG. 4) with respect to the shaft member 14. When the core 22 rotates counterclockwise with respect to the shaft member 14, the needles 31, 31... That are in contact with the shaft member 14 are attached to the spring member 53 by the frictional force with the shaft member 14. Against the force, it is released from the restraint of the clamping part G and pushed out in the direction approaching the storage groove 65 in the needle hole 32. In each of the needle holes 32, 32,..., The distance between the inner wall of the restriction hole 61 on the side close to the storage groove 65 and the shaft member 14 is larger than the diameter of the needle 31, as described above. , 31... Can be kept out of contact with the shaft member 14 when pushed out in the needle hole 32 in a direction approaching the storage groove 65 . Therefore, since the core 22 can rotate relative to the shaft member 14, the shaft member 14 is held without rotating even when the cap body 21 and the core 22 rotate.

  As described above, in the screw 13 using the one-way clutch mechanism, when the cap body 21 is rotated clockwise, the rotational force is transmitted to the shaft member 14 to rotate the shaft member 14, and the cap body 21 is rotated. Is rotated counterclockwise, the rotational force is not transmitted to the shaft member 14, and the shaft member 14 is kept from rotating. In addition, when the cap body 21 is rotated clockwise with a strong force, the needles 31, 31,... Are not pressed against the shaft member 14, so that the rotational force is transmitted to the shaft member 14. The shaft member 14 is not rotated.

  On the other hand, as shown in FIG. 2, the lower cover 5 is formed to have the same width as the upper cover 6, and has a vertically long rectangular outer shape (like the upper fixing wings 16, 16 of the upper cover 6) on both the left and right sides. Lower fixed wings 17 and 17 having an outer shape when viewed from the front are provided continuously. And the latching protrusion 11 which the front-end | tip formed in the arrowhead shape is protrudingly provided by the upper-end edge of each lower fixed wing | blade 17 and 17, respectively. FIG. 7 shows the front surface of each lower fixed wing 17, and a screw hole is provided at a position corresponding to each screw holding portion 9 of the upper cover 6 of each lower fixed wing 17, 17. The screw engaging bodies 20, 20,... Formed by drilling 36 are provided in a state of being supported on the left and right wall plates 19, 19 by the support arms 33, 33 and the support ribs 34, 34.

  In a state where the substrate 4 is screwed onto the inner surface of the lower cover 5, the control device 1 superimposes the upper fixing wings 16, 16 of the upper cover 6 on the lower fixing wings 17, 17 of the lower cover 5, In a state where the projecting pieces 11 and 11 are locked in the respective locking holes 12 and 12, the screws 13 (the above-described screws are held on the uppermost screw holding portion 9 (screw holding portion 9 with “1” attached) on the left side. And a screw holding part 9 ("1" attached to the lowermost right side) and screwed to the uppermost screw engaging body 20 on the left side. The screw 13 held by the portion 9) (using the one-way clutch mechanism as described above) is rotated clockwise and screwed to the rightmost lower screw engaging body 20 to be assembled. And the board | substrate 4 which mounts various control elements, such as ROM8 and CPU, is the state covered with the upper cover 6 and the lower cover 5 (Note that the board | substrate 4 is a part of upper side like FIG. Only exposed). Note that the screwing amount of the screw 13 into the screw engaging body 20 is restricted to a predetermined amount (about 10 mm) by the restriction ring 52. Further, when the screw 13 in the screw holding portion 9 is screwed to the screw engaging body 20, the retaining protrusion 51 inside the cap body 21 comes into contact with the flange body 41 by elasticity, so that the cap body 21 is idle. Prevented with very high accuracy.

[Operation contents of control device]
The control device 1 configured as described above is used in a state of being installed on a mechanism plate or the like on the back side of the pachinko machine. Then, the operation contents of the pachinko machine are controlled by various control elements such as the mounted ROM 8 and CPU.

  Since the screw holding portions 9 and 9 of the upper cover 6 and the screw engaging bodies 20 and 20 of the lower cover 5 are screwed by screws 13 and 13 using a one-way clutch mechanism, the screws 13 and 13 are screwed. It cannot be rotated in the opposite direction (counterclockwise) to that of wearing, and the screwed state between the screw holding portion 9 and the screw engaging body 20 cannot be released. Therefore, when the upper cover 6 is to be removed, the two attachment pieces 10, 10... Provided in front of the screw holding portions 9, 9 screwed to the screw engaging bodies 20, 20 can be removed with a tool such as a nipper. The upper cover 6 and the lower cover 5 must be separated by cutting and separating the screw holding portions 9 and 9 from the upper cover 6.

  When the upper cover 6 is reattached to the lower cover 5, the screw holding portions 9, 9 other than the uppermost screw engaging body 20 on the left side and the lowermost screw holding portion 9 (i.e., still screw What is necessary is just to screw the screw holding parts 9 and 9 which attached | subjected the same number which is not screwing with the engaging body 20 with the screw engaging bodies 20 and 20 of the same position by the screws 13 and 13, respectively. Therefore, even after the upper cover 6 and the lower cover 5 are once separated, the upper cover 6 can be attached to the lower cover 5 again. Wearing can be repeated four times.

[Effect of control device]
As described above, in order to separate the upper cover 6 from the lower cover 5, the control device 1 cuts the attachment pieces 10, 10... So as to be screwed to the screw engaging bodies 20, 20. , 9 must be separated from the upper cover 6, so that the traces always remain when the upper cover 6 is removed. Therefore, it is possible to easily grasp whether the upper cover 6 is opened or closed. Nevertheless, since the mounting pieces 10 and 10 have a structure that can be easily cut, the upper cover 6 can be easily removed by cutting the mounting pieces 10 and 10 with a tool such as a nipper. Thus, the contents of the control elements installed on the substrate 8 can be checked.

Further, as described above, in the control device 1, each of the screws 13 and 13 has a one-way clutch mechanism, and when the head unit 15 is rotated in the forward direction, the shaft member 14 rotates together with the head unit 15. Therefore, the upper cover 6 and the lower cover 5 can be screwed together, but even if the head portion 15 is rotated in the reverse direction, only the head portion 15 is rotated in the reverse direction and the shaft member 14 is not rotated. Held in. Further, the screws 13, 13 are in a state where the needles 31, 31,... Are not pressed against the shaft member 14 when the cap body 21 is rotated with a strong force in the positive direction. Is not transmitted to the shaft member 14, and the shaft member 14 is held without rotating. Therefore, the control device 1 can effectively prevent a situation in which the upper cover 6 is illegally removed without cutting the attachment pieces 10, 10. Therefore, according to the control device 1, unauthorized replacement and unauthorized modification of control elements such as the ROM 8 can be prevented very effectively.

[Control device change example]
The control device of the present invention is not limited to the aspect of the embodiment described above, and the configuration of the shape, structure, etc. of the board, the upper cover, the lower cover, the screw using the one-way clutch mechanism, etc. Changes can be made as appropriate without departing from the spirit of the invention.

  For example, the number of screw holding portions provided on each upper fixing wing of the upper cover and the number of mounting tabs provided on each of the lower fixing wings on the left and right of the lower cover are not limited to four, and may be three or less or five or more. good. Further, the number of attachment pieces for connecting each upper fixing blade and the screw holding portion is not limited to two, and may be one or three or more. Furthermore, the installation positions of the upper fixing wing and the lower fixing wing are not limited to the left and right end edges of the upper and lower covers, but may be the upper and lower end edges of the upper and lower covers.

  Further, the screw using the one-way clutch mechanism is not limited to the one that presses a plurality of needles built in the head portion against the shaft member as in the above-described embodiment, and is changed to one using another one-way clutch mechanism. Is also possible. In addition, when a one-way type screw using a one-way clutch mechanism that presses a plurality of needles against the shaft member as in the above-described embodiment is used, the spring for biasing the needle has two proximal ends. The shape is not limited to a folded shape, and may be a shape in which a mountain fold line and a valley fold line are continuous along the longitudinal direction of the shaft member. Further, the number of needles for fixing the shaft member is not limited to five, and can be changed to four or less or six or more. Furthermore, the cap body and the core of the screw head portion are not limited to those provided integrally, but can be changed to one configured by assembling a plurality of members.

  In addition, the screw using the one-way clutch mechanism is not limited to the one in which the core, the spring member, and the like are built in the housing constituted by the cap body and the lid body, as in the above embodiment. It is also possible to change to a configuration in which the head portion is constituted by a core and a cap body integrally provided with a lid. Further, when the spring member and the lid are integrally provided on the core as described above, columnar protrusions 61 and 61 are provided on the outer peripheral surface of the core 22 ′ and the cylinder of the cap body 21 as shown in FIG. It is also possible to configure so that the cap body 21 can be attached to the core 22 ′ by providing the columnar recesses 60, 60 in the cylindrical portion T and fitting the columnar protrusions 61, 61 into the columnar recesses 60, 60. In addition, when comprised in that way, it is also possible to abbreviate | omit the structure of the convex part provided in the recessed part provided in the outer peripheral surface of a core, or the inner peripheral surface of a cap body. Further, as shown in FIG. 8B, a circumferential protrusion 63 is provided on the outer peripheral surface of the core 22 ″, a circumferential recess 62 is provided in the cylindrical portion T of the cap body 21, and the circumferential protrusion 63 is replaced with the circumferential recess 62. It is also possible to configure so that the cap body 21 can be attached to the core 22 ″ by being fitted to the core 22 ″. In such a configuration, in order to prevent relative rotation of the cap body with respect to the core, a concave portion is provided on the outer peripheral surface of the core and a convex portion is provided on the inner peripheral surface of the cap body as in the above embodiment. It is necessary to adopt a configuration such as (or providing a convex portion on the outer peripheral surface of the core and providing a concave portion on the inner peripheral surface of the cap body). When the spring member and the lid are integrally provided in the core as described above, there is an advantage that it is very easy to assemble the screws at the time of manufacturing the game machine control device.

  Furthermore, the regulating ring to be fixed to the shaft member of the screw is not limited to the flat ring shape (disc shape with the center drilled in a circular shape) as in the above embodiment, but the E ring shape as shown in FIG. Alternatively, it can be changed to any shape that can be mounted on the outer periphery of the shaft member, such as a non-circular plate-like body having a circular center. In addition, the restriction ring is not limited to the one that is externally fitted to the shaft main body and is crimped as in the above embodiment, but may be formed integrally with the shaft main body, or may be fixed to the shaft main body by welding or adhesion. It is also possible to change to something.

Further, as shown in FIGS. 10 (a) and 10 (b), the regulating ring may be provided with protrusions (bites) 48, 48,. When such a configuration is adopted, the regulating ring can be screwed into the lower cover (mounting tab) and the back surface of the head (the surface on the tip side of the screw) can be brought into contact with the surface of the lower cover (mounting tab). Therefore, it is possible to effectively prevent an illegal act of injecting an adhesive from the back surface of the head portion into the gap between the head portion and the shaft member to fix them so that the screw can be removed from the lower cover. It becomes possible. Further, as shown in FIG. 10C, the regulating ring may be provided with protrusions (bites) 57, 57,... On the lower surface (the surface facing the mounting tab of the lower cover). In the case of adopting such a configuration, when screws are screwed onto the lower cover (mounting tab), traces (cut off by the protrusions 57, 57,...) Remain on the surface of the lower cover mounting tab, so that a regular screw is used. It is possible to more effectively prevent a fraud in which a fraudulently removed and replaced with another is effectively prevented. In addition, as shown in FIG. 10 (d), the restricting ring may be provided with protrusions (cutting tools) 58, 58, ... On the upper surface (the surface facing the mounting tab of the lower cover ) . In the case of adopting such a configuration, when the screw is firmly screwed to the lower cover (mounting tab), the regulating ring comes into contact with the back surface of the head portion and traces on the back surface (scraping by the protrusions 58, 58,...) Therefore, it is possible to more effectively prevent the unauthorized use of illegally removing the regular screw and replacing it with another one. In addition, when providing a protrusion (bite) on the outer periphery, lower surface, and upper surface of the restriction ring, the shape of the protrusion can be appropriately changed as necessary. In addition, the screw using the one-way clutch mechanism is a one-way type in which a plurality of screw projections having a contact surface that comes into contact with the driver only when the driver is rotated in a predetermined direction are provided at the base end of the cap body. It can also be a screw.

  In addition, a screw using a one-way clutch mechanism is a screw that is held in a state where the needle is not pressed against the shaft member and only the head portion rotates when the head portion is rotated in the forward direction with a strong force exceeding a threshold value. (In other words, after the head portion is rotated in the forward direction with a strong force equal to or greater than the threshold value, only the head portion rotates (is idle) when rotated in the forward direction or the reverse direction) Well, as in the above embodiment, it is not limited to one in which a needle covered with a soft synthetic resin is incorporated in the head portion, but the surface layer portion on the base end side of the shaft member is changed to one formed from a soft metal. Is also possible. When such a configuration is adopted, when the head portion is rotated clockwise with a strong force, the surface layer portion of the shaft member is collapsed (scraped off, etc.) by each needle pushed away from the storage groove in the needle hole. Therefore, even if the head portion rotates, the shaft member is held without rotating. Therefore, as in the case of using the screw of the above embodiment, it is extremely effective to prevent the upper cover from being illegally removed and the control element to be illegally replaced or illegally modified without cutting the mounting piece. It becomes possible to prevent. Furthermore, the screw using the one-way clutch mechanism is limited to a screw that maintains the contact state between the needle and the shaft member even when the head portion is rotated in the forward direction with a strong force equal to or greater than a threshold value as in the above embodiment. Alternatively, when the head portion is rotated in the positive direction with a strong force equal to or greater than the threshold value, the needle and the shaft member can be kept in a separated state. When such a configuration is adopted, it is possible to prevent the situation where the upper cover is illegally removed without cutting the mounting piece and the control element is illegally replaced or modified with higher accuracy. It becomes possible.

  In addition, the screw using the one-way clutch mechanism is provided with a soft part on the inner wall of the restriction hole 61 adjacent to the clamping part G as shown in FIG. 11, and the head part 15 is rotated in a positive direction with a strong force. In this case, it is possible to change the needles 31, 31... So that a part of the needles 31, 31... Enters the soft part (that is, the inner wall of the restriction hole 61 is deformed). Even when such a configuration is adopted, when the head portion 15 is rotated with a strong force in the forward direction, the needles 31, 31... Are held without contacting the shaft member 14, as shown in FIG. Therefore, it is possible to very effectively prevent a situation in which the upper cover is illegally removed and the control element is illegally replaced or illegally modified without cutting the attachment piece.

  In addition, although the control apparatus used for the pachinko machine was demonstrated in the said embodiment, the game machines using the control apparatus of this invention may be game machines other than pachinko machines, such as a slot machine and a video game.

1 ・ ・ Control device 4a, 4b ・ ・ Board 5 ・ ・ Lower cover 6 ・ ・ Upper cover 7 ・ ・ Screw projection 8 ・ ・ Control element
9 .. Screw holding part 13 .. Screw 14 .... Shaft member 15 .... Head part 21 ... Cap body 31 ... Needle 32 ... Needle hole

Claims (1)

The upper cover and the lower cover that matches the upper cover cover the substrate on which the control element is installed,
A screw holding portion that holds a screw to be screwed with the lower cover is provided on an edge of the upper cover via a severable mounting piece,
The upper cover is held closed with respect to the lower cover by screwing the screw held in the screw holding part with the lower cover, and the screw holding part screwed with the lower cover is cut from the upper cover. A control device for a gaming machine that separates the upper cover and the lower cover,
The screw has a one-way clutch mechanism;
When the head portion is rotated in the forward direction, the needle built in the head portion is pressed against the shaft member , while the shaft member rotates with the head portion,
When the head portion is rotated in the reverse direction, the pressing state of the needle on the shaft member is released, and only the head portion rotates,
When the head portion is rotated in the positive direction with a strong force equal to or greater than a threshold value, the needle is held in a state where it is not pressed against the shaft member, and only the head portion rotates, and the control device for gaming machines .

Images