JP2010057763A - Pachinko machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a Pachinko machine suitably detecting fraud by a magnet. <P>SOLUTION: A plurality of reed switches 25 for detecting a magnet are disposed in the interior of a housing 26 and integrated together as a magnetic detection unit 22, the magnetic detection unit 22 is so mounted that the housing 26 is internally fitted in a mount hole 23 formed at the back surface of the game board 8, and the inner surface of the mount hole 23 is supported by the housing 26. This constitution can appropriately form the wide and thorough detection area by the plurality of reed switches 25 to surely prevent the fraud by the magnet. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a pachinko machine provided with a sensor for detecting fraud by a magnet, and more particularly to a machine using a reed switch as a sensor.

  Conventionally, in pachinko games, there has been a problem of fraud in which a game ball that rolls on the surface of a game board is guided or retained by using a magnet and excessive winnings are generated. In order to prevent such fraud, recent pachinko machines have taken measures such as a magnetic sensor arranged on the game board detecting this when a magnet is brought close to the game board surface and turning on a warning lamp. Inexpensive reed switches are widely used as such magnetic sensors. The reed switch is a saddle-like switch formed by attaching a contact point on a ferromagnetic lead and enclosing it in a glass tube, and is designed to operate when a magnetic field is applied from the outside. Conventionally, when such a reed switch is disposed on a game board, a non-penetrating mounting hole is formed on the back of the gaming board, and the reed switch is inserted and held in the mounting hole (see Patent Document 1). ).

  By the way, it is known that the detection area in which a reed switch can detect a magnet changes with the installation angle with respect to the game board surface. That is, as shown in FIG. 19 (a), when the reed switch is arranged so that the lengthwise direction of the reed switch is perpendicular to the game board surface as in the conventional pachinko machine, )), A detection area C is formed, and the reed switch 25 can detect the magnet B2 in front of the game board surface A. However, in such a case, since the detection region C is formed only in front of the reed switch 25, the magnets B1 and B3 that are located away from the front of the reed switch 25 cannot be detected.

  On the other hand, when the reed switch is arranged so that the lengthwise direction of the reed switch is parallel to the game board surface, the detection areas C and C are provided at both ends of the reed switch 25 as shown in FIG. The detection area C is formed in a wide range in front of the game board surface A. However, in such a case, the distance over which the detection area C extends forward (leftward in the figure) becomes short, and detection is not possible if the magnets B1 and B3 are spaced relatively far from the game board surface A. Further, the detection region C is not formed in front of the reed switch 25, and the magnet B2 in front of the reed switch 25 cannot be detected.

Japanese Utility Model Publication No. 54-119476 (Fig. 5)

  As described above, in a conventional pachinko machine, a reed switch is inserted and held in a non-penetrating mounting hole formed on the back surface of the game board. For this reason, the game board becomes thin at the mounting hole forming portion, resulting in insufficient strength, and the game board may be recessed or cracked by the impact of the game ball hitting the game board surface. To solve this problem, it is proposed to eliminate the lack of strength of the game board by attaching a reed switch to the back side of the game board without forming a mounting hole or by shallowing the mounting hole. In the configuration, since the reed switch has to be arranged behind the conventional configuration, the detection area of the reed switch is formed in the back, making it difficult to detect the magnet in front of the game board surface.

  An object of the present invention is to provide a pachinko machine capable of suitably detecting fraud due to a magnet while maintaining the strength of a game board.

  The present invention includes a magnetic detection unit in which a reed switch for magnetic detection is disposed inside a housing, and the magnetic detection unit is fitted into the mounting hole formed forward in the back of the game board. The pachinko machine is characterized in that the housing is fixed to the game board so as to support the back surface of the mounting hole from the back side. Here, the “back surface” of the mounting hole is a wall surface that forms a front end in the inner wall surface of the mounting hole.

  In the present invention, the game board can be reinforced by supporting the back surface of the mounting hole from the back side by the housing of the magnetic detection unit, so that the strength of the game board is not insufficient at the mounting hole forming portion, and the game ball The game board will not be damaged by the impact of hit. That is, according to the present invention, the back surface of the mounting hole can be formed close to the game board surface without deficient in the strength of the game board, and by arranging the magnetic detection unit near the game board surface, the reed switch There is an advantage that the detection region can be formed further forward. In particular, as described above, when the reed switch is arranged so that the lengthwise direction of the reed switch is parallel to the game board surface, the mounting hole is larger than the case where the reed switch is arranged vertically, and the detection area is forward. Therefore, if the configuration of the present invention is applied, a great effect can be obtained.

  In the present invention, a configuration is proposed in which the magnetic detection unit is formed by integrating a plurality of reed switches inside a housing. In such a configuration, a wide detection area without gaps can be formed by appropriately disposing each reed switch inside the housing. That is, as described above, with a single reed switch, there is a problem that the detection area becomes narrow due to the arrangement of the reed switch, or a gap that cannot be detected directly in front of the reed switch, and a sufficient detection area cannot be formed. However, according to the magnetic detection unit of the present invention, a combination of a plurality of reed switches can cover a required range and form a detection region without a gap. Such a magnetic detection unit is formed by arranging and integrating a plurality of reed switches inside the housing, so that it can be easily mounted in the mounting hole of the game board. Note that when multiple reed switches are unitized and mounted in the mounting holes, the mounting holes must be larger than when a single reed switch is mounted. However, in the present invention, the problem of insufficient strength of the game board can be solved by supporting the inner surface of the mounting hole with the housing.

  In the present invention, the game board is formed by attaching a resin cell board to the front surface of a wooden plywood, the mounting hole passes through the wooden plywood, and the inner surface of the mounting hole is the cell board. It is proposed to be constituted by the back side of In such a configuration, the magnetic detection unit can be arranged as far forward as possible without exposing the magnetic detection unit to the game board surface.

  In the present invention, it is proposed that the housing is fixed to the game board so as to support the inner peripheral surface of the mounting hole. Here, the “inner peripheral surface” of the mounting hole is a wall surface forming a portion excluding the “back surface” in the inner wall surface of the mounting hole. In such a configuration, the mounting hole can be appropriately formed in the vicinity of the game nail, and the degree of freedom of the arrangement position of the magnetic detection unit can be increased. In other words, in the case of a conventional mounting hole, if the mounting hole is formed in the vicinity of the game nail, the inner peripheral surface of the mounting hole may be damaged by a load applied during nail adjustment. If the inner peripheral surface of the hole is reinforced by supporting it with the housing, the possibility of damaging the mounting hole during adjustment of the nail is eliminated.

  The magnetic detection unit according to the present invention can form a wide detection area without gaps by appropriately arranging a plurality of reed switches in the housing. The optimal arrangement of the reed switch in the housing varies depending on the installation location of the magnetic detection unit, the sensitivity of the reed switch, etc., but is not uniquely determined. A configuration is proposed in which the reed switch is arranged in the housing so as to form a T shape with respect to a plane perpendicular to the game board surface. Further, a configuration is proposed in which two hook-shaped reed switches are arranged in the housing so as to form a V shape or a C shape with respect to a plane perpendicular to the game board surface. A configuration is also proposed in which two hook-shaped reed switches are arranged in the housing so as to form an X shape with respect to a plane perpendicular to the game board surface. In addition, a configuration is proposed in which two hook-shaped reed switches are arranged in the housing along a straight line parallel to the game board surface. Further, a configuration is proposed in which two hook-shaped reed switches are arranged in the housing so as to form a T shape with respect to the game board surface. In addition, a configuration is proposed in which three hook-shaped reed switches are arranged in the front and rear, left and right, and up and down directions within the housing.

  In the present invention, the means for fixing the housing of the magnetic detection unit to the game board is not particularly limited. For example, the housing includes a flange portion that comes into contact with the back surface of the game board in a state of being fitted into the mounting hole. A configuration is proposed in which the flange portion is fixed to the game board surface by being screwed or nailed to the back surface of the game board.

  In addition, a configuration is proposed in which the housing is provided with an elastic material on the outer surface thereof and is fixed to the game board by elastically contacting the inner peripheral surface of the mounting hole via the elastic material. In such a configuration, since it is not necessary to fix the magnetic detection unit with a nail or a screw, the magnetic detection unit can be mounted on the game board very easily.

  A configuration is also proposed in which the housing is fixed to the game board by being bonded to the inner peripheral surface of the mounting hole. In such a configuration, the mounting hole and the housing can be brought into close contact with each other via the adhesive, so that the back surface and the inner peripheral surface of the mounting hole can be uniformly supported by the housing.

  In the present invention, the manner in which the plurality of reed switches are arranged in the housing is not particularly limited, but as a preferred embodiment, the magnetic detection unit is mounted with a reed switch and a connector electrically connected to the reed switch. A configuration is proposed in which the substrate is held inside the housing by fitting an end of the substrate into a holding groove formed inside the housing. In such a configuration, the reed switch can be arranged in various arrangements in the housing, and the reed switch can be easily accommodated in the housing. In addition, each reed switch can be easily connected to a control device or the like via a connector. As another configuration, a configuration is proposed in which a plurality of reed switches are previously accommodated in a case or solidified with a resin and integrated into a housing. In such a configuration, a plurality of reed switches can be freely arranged in the housing. Further, the reed switch may be directly held inside the housing without being attached to the substrate or the like in advance.

  In the present invention, a configuration is proposed in which a magnetic shield made of an endless annular ferromagnetic material is provided outside the housing of the magnetic detection unit. In such a configuration, magnetic noise can be blocked by the magnetic shield. Therefore, by properly arranging the magnetic shield, the magnetic noise generated by electronic devices such as solenoids arranged around the magnetic detection unit can be read. It is possible to prevent the switch from malfunctioning. As a result, the magnetic detection unit can be disposed closer to other electronic devices, and the degree of freedom in arranging the magnetic detection unit can be improved.

  As described above, according to the present invention, since the inner surface of the mounting hole is supported by the housing of the magnetic detection unit, the game board does not have insufficient strength at the portion where the mounting hole is formed. Further, this makes it possible to form the mounting hole close to the game board surface, so that the magnet in front of the pachinko machine can be detected more accurately by arranging the magnetic detection unit closer to the game board surface.

Embodiments of the present invention are described according to the following examples.
As shown in FIG. 1, the pachinko machine 1 according to the present embodiment is arranged in a rectangular outer frame 2 fixed to a game island (not shown) and an opening portion of the outer frame 2 so as to be opened and closed. The front frame 3 is provided. The outer frame 2 is formed by assembling a long plate piece, and pivotally supports the front frame 3 through a hinge member 4 provided on the left side thereof so that the front frame 3 can be opened in a single direction.

  On the other hand, the front frame 3 is formed of a rectangular resin plate having a substantially square game opening 5 formed in the upper center portion, and an upper plate 11 can be rotated on the front surface below the game opening 5. Furthermore, below the upper plate 11, there are provided a lower plate 12 for storing game balls and a launching handle 6 protruding to the right side of the lower plate 12.

  A rectangular board-like game board 8 is disposed in the game opening 5 so as to block the entire game opening 5 from behind, and the front of the game board 8 is shielded from the front of the game board 8 so as to be seen through. A gaming door 10 is provided. The gaming door 10 includes two transparent plates 9 in a substantially rectangular frame portion 15, and can be opened and closed by pivoting the left side portion of the frame portion 15 to the left edge of the game opening 5. It has become.

  As shown in FIG. 2, the game board 8 is formed by attaching a cell board 14 with a decoration on a plastic sheet to the entire front surface of a wooden plywood 13. A long metal rail 16 is bent and attached to the front surface of the game board 8, thereby forming a circular game area 7 and an arcuate guide passage 17, which are arranged on the lower right side of the game board 8. A game ball launched from a launching device (not shown) is released to the upper left portion of the game area 7 through the guide passage 17. Various game members such as game nails 18 are arranged in the game area 7, and the game balls released to the game area 7 roll down between the game members and are formed on the game board 8. It flows into the out port 20 and the winning port 19 and is discharged to the back side of the game board 8.

Below, the structure which concerns on the principal part of this invention is demonstrated in detail.
The magnetic detection unit 22 according to the present invention is attached from the back side of the game board 8 to a place where fraud with a magnet is easily performed, such as in the vicinity of the winning opening 19.

  As shown in FIGS. 3 and 4, the magnetic detection unit 22 is configured by mounting a substrate 27 to which two hook-shaped reed switches 25, 25 are attached inside a housing 26.

  The housing 26 is a resin-made rectangular parallelepiped box-shaped member, and an accommodating portion 31 that opens to the back side is formed inside the housing 26. A pair of left and right holding grooves 29, 29 are formed in the front-rear direction on the inner side surface of the accommodating portion 31, and both ends of the substrate 27 are fitted into the retaining groove 29 from the rear side, whereby the substrate 27 is placed inside the accommodating portion 31. Can be held horizontally. Further, a locking projection 30 is formed near the entrance of one holding groove 29, and when the substrate 27 is inserted all the way into the housing portion 31, the locking projection 30 is formed at a corner of the substrate 27. The substrate 27 is engaged with 35 and locked so as not to be pulled out. A pair of left and right flange portions 28 are formed on the rear end of the housing 26 so as to face outward. A through hole 33 is formed in each flange portion 28, and the housing 26 is fixed to the game board 8 by screwing or nailing the flange portion 28 to the back surface of the game board 8 (see FIG. 5).

  As the reed switch 25, a general-purpose product used for magnetic detection can be suitably used. These can also use what covered the part of the glass tube with resin, and what was accommodated in the case. Further, the two reed switches 25 may not be the same type.

  The board 27 is a general printed board, and is held horizontally inside the housing 26 by fitting both sides thereof with the holding grooves 29 of the housing 26 as described above. Two reed switches 25 are mounted on the upper surface of the substrate 27 so as to form a T shape, and the reed switch 25 constituting the “T” horizontal bar is positioned on the housing 26 so as to be located closer to the front. Retained. Each reed switch 25 is electrically connected to a connector 32 attached to the left rear end portion of the substrate 27 via wiring of the substrate 27, and a control device (not shown) of the pachinko machine 1 is connected via the connector 32. ).

  As shown in FIG. 5, the magnetic detection unit 22 is fitted in a mounting hole 23 formed forward on the back surface of the game board 8. The mounting hole 23 is drilled forward from the back of the wooden plywood 13 so that its back surface (front inner wall surface) is located near the game board surface A, and the magnetic detection unit 22 is mounted on the mounting board 23. It is formed in a shape that can be tightly fitted. That is, the front surface of the housing 26 is in close contact with the inner surface of the mounting hole 23 in a state in which the magnetic detection unit 22 is fitted to the back of the mounting hole 23, and the upper, lower, left, and right outer surfaces of the housing 26 are the inner periphery of the mounting hole 23. It is in contact with the surface (upper and lower inner walls). In this state, the flange portions 28 and 28 are in contact with the back surface of the game board 8 and are fixed by the fixing nails 37.

  In this configuration, when the magnet approaching the transparent plate 9 from the front enters the detection area C (see FIG. 6) of the reed switches 25 and 25, the reed switch 25 is turned on in response to the magnetism of the magnets. . Then, a control device (not shown) detects the ON operation and turns on the warning lamp. In addition, since the structure of a control apparatus and the warning aspect at the time of a magnetic detection can apply the structure of the existing pachinko machine, detailed description is abbreviate | omitted.

  As described above, in this embodiment, the magnetic detection unit 22 including the two reed switches 25 is mounted on the game board 8, so that the plurality of reed switches 25 can be configured with a simple configuration. It can be easily attached to the game board 8.

  Further, in this configuration, as shown in FIG. 5, the two reed switches 25 of the magnetic detection unit 22 are arranged in a T shape along a plane (horizontal plane) perpendicular to the game board surface A. . For this reason, as shown in FIG. 6, the detection area C1 of the reed switch 25 arranged in parallel with the game board surface A and the detection area C2 of the reed switch 25 arranged perpendicular to the game board surface A are combined. In front of the magnetic detection unit 22, a wide detection area C without a gap is formed. In particular, in the present embodiment, as shown in FIG. 5, of the two reed switches 25, the one parallel to the game board surface A is arranged forward, and the mounting hole 23 is further provided on the game board surface. Since the reed switch 25 is arranged near the game board surface A by forming it close to A, as shown in FIG. 6, the detection region C1 of the reed switch 25 is formed considerably forward of the transparent plate 9, The detection area C1 can appropriately detect fraud by a magnet.

  In the present embodiment, the magnetic detection unit 22 is fixed to the game board 8 with the front surface of the housing 26 in contact with the back surface of the mounting hole 23, and the back surface of the mounting hole 23 is viewed from the back side. I support it. For this reason, as shown in FIG. 5, even if the mounting hole 23 is formed up to the vicinity of the game board surface A and the strength of the game board 8 itself is insufficient at the portion where the mounting hole 23 is formed, the game board 8 is dented or damaged. There is nothing to do. In the present embodiment, the housing 26 of the magnetic detection unit 22 is fixed to the game board 8 in contact with the entire inner peripheral surface of the mounting hole 23, and also supports the inner peripheral surface of the mounting hole 23. ing. Therefore, as shown in FIG. 5, even if the game nail 18 is driven in the vicinity of the magnetic detection unit 22, there is no possibility that the inner peripheral surface of the mounting hole 23 is damaged by a load applied when adjusting the game nail 18. .

  Next, a modified example in which the configuration of the above embodiment is partially changed will be described. In the following description, the same reference numerals are used for portions common to the above-described embodiments, and the description is omitted.

  FIG. 7 shows a modification in which the configuration of the above embodiment is changed. In such a modification, the mounting hole 23a passes through the wooden plywood 13 constituting the game board 8, and the back surface (front inner wall surface) of the mounting hole 23a is formed by the back surface of the cell board 14, and the magnetic detection unit 22 Is fixed to the game board 8 with the front surface of the housing 26 in contact with the back surface of the cell plate 14. In such a configuration, as shown in FIG. 7, the magnetic detection unit 22 can be arranged as far forward as possible without exposing it to the game board surface A, so that the detection area of the reed switch 25 is further forward of the game board surface A. It becomes easy to detect the magnet in the position away from the game board surface A. Further, in this embodiment, the portion of the cell plate 14 that forms the inner surface of the mounting hole 23 is supported from the back side by the housing 26, so that the cell plate 14 is damaged even if it hits a game ball. It is not.

  8 and 9 show modifications in which the fixing mode of the magnetic detection unit is changed. In such a modification, rubber elastic members 40 are integrally joined to the left and right outer portions of the housing 26 of the magnetic detection unit 22a. A plurality of protrusions 41 projecting toward the rear are formed on the outer surface of the elastic member 40, and the magnetic detection unit 22 a is inserted into the mounting hole 23 while the elastic member 40 is pressed against the inner peripheral surface of the mounting hole 23. When inserted, the protrusion 41 elastically contacts the inner peripheral surface of the mounting hole 23 to fix the magnetic detection unit 22a. In such a configuration, it is not necessary to fix the magnetic detection unit 22a with a nail or a screw, so that the magnetic detection unit 22a can be easily attached to the game board 8. Further, since the housing 26 is in elastic contact with the inner peripheral surface of the mounting hole 23 via the elastic member 40, there is an advantage that the inner peripheral surface of the mounting hole 23 can be supported more firmly.

  FIG. 10 shows a modification in which the fixing mode of the magnetic detection unit is changed. In such a modification, the housing 26 of the magnetic detection unit 22b is integrally bonded to the inner surface and the inner surface of the mounting hole 23 by an adhesive 39 disposed on the outer surface thereof. In such a configuration, the mounting hole 23 and the housing 26 are brought into close contact with each other via the adhesive 39, so that the rear surface and the inner peripheral surface of the mounting hole 23 are uniformly supported by the housing 26 without unevenness.

  FIG. 11 shows a modification of the magnetic detection unit. The magnetic detection unit 22c of this modification is one in which two reed switches 25 are arranged in the housing 26a so as to form a T shape with respect to the game board surface A. Specifically, the housing 26a has a substantially cubic shape, and at its rear end, a pair of flange portions 28a, 28a to be nailed to the back surface of the game board 8 are formed outward. The housing part 31a of the housing 26a is open to the upper part and the rear part. Then, a pair of left and right holding grooves 29a, 29a are formed in the vertical direction on the left and right inner side surfaces of the accommodating portion 31a, and by fitting the both ends of the substrate 27a into the holding groove 29a, The board 27a is held in the accommodating portion 31a in a posture parallel to the game board surface A. The substrate 27a held in the accommodating portion 31a is substantially the same as the substrate 27 of the above embodiment, and two reed switches 25 are arranged in a T shape on the plate surface, and a connector 32a is attached to the lower left portion. It has been. Thus, in the above embodiment, the board is held horizontally in the housing. However, in the present invention, the angle at which the board is held is not particularly limited, and the board is parallel to the game board surface as in this modification. You can hold it.

  12 and 13 show a modification in which the arrangement of the reed switch 25 mounted on the substrate 27 is changed from the above embodiment. FIGS. 12A and 12B show a modification in which two reed switches 25 are arranged on a substrate 27 in a V shape or a C shape. In such a modification, the two reed switches 25 are inclined at different angles with respect to the game board surface A, so that a wide detection area is formed in front of the game board surface A. FIG. 13A shows a modification in which two reed switches 25 are arranged in an X shape by attaching reed switches 25 to both surfaces of the substrate 27. Even in this modification, the two reed switches 25 are inclined at different angles with respect to the game board surface A, so that a wide detection area is formed in front of the game board surface A. FIG. 13B shows a modification in which two reed switches 25 are arranged on the board 27 along a straight line parallel to the game board surface A. In this modification, the detection region C3 of one reed switch 25 and the detection region C4 of the other reed switch 25 are formed so as to eliminate the non-detection region directly in front of each other reed switch 25. As a whole, a detection area which is wide and has no gap is formed. As described above, in the above embodiment, the two reed switches 25 are arranged in a T shape with respect to the substrate 27. However, the number and arrangement of the reed switches 25 arranged on the substrate 27 are different from those of the magnetic detection unit. It can be changed as appropriate according to the location and sensitivity.

  FIG. 14 shows a modification of the magnetic detection unit. In the magnetic detection unit 22d of this modification, three hook-shaped reed switches 25 are arranged in the front and rear, left and right, and top and bottom in the housing 26b. More specifically, the housing 26b has a substantially rectangular parallelepiped shape, and a pair of flange portions 28b, 28b that are nailed to the back surface of the game board 8 are formed outward at the rear end. The housing part 31b of the housing 26b is open to the upper part and the rear part. A pair of holding grooves 29b and 29b are formed on the left and right inner side surfaces of the accommodating portion 31b so as to cross the center portion back and forth, and both end portions of the substrate 27b are fitted into the holding grooves 29b from the rear. Thus, the substrate 27b is held in a horizontal posture in the accommodating portion 31b. A pair of holding grooves 29c and 29c are formed in the vertical direction on the left and right inner side surfaces of the accommodating portion 31b, and both ends of the substrate 27c are fitted into the holding grooves 29c from above. As a result, the board 27c is held in front of the housing portion 31b in a posture parallel to the game board surface A. The substrate 27b held horizontally in the housing portion 31b has the same configuration as the substrate 27 of the above-described embodiment, and two reed switches 25 are arranged in a T shape on the upper surface thereof. On the other hand, a single reed switch 25 is mounted in a vertical direction on the board 27c held in parallel with the game board surface A, and a connector 32b electrically connected to the reed switch 25 is disposed on the upper right portion thereof. Is done.

  In this configuration, as shown in FIG. 15, two reed switches 25a and 25b mounted in a T-shape on a horizontal board 27b and a vertical direction mounted on a board 27c parallel to the game board surface A The reed switch 25c is disposed in the three axial directions of front and rear, left and right, and upper and lower, respectively. In such a configuration, the two reed switches 25b and 25c arranged vertically and horizontally are arranged so as to cross the game board surface A in a cross shape to form a wide detection area in front of the game board surface A. A single reed switch 25a arranged in front of and behind the up / down, left / right reed switches 25b, 25c forms a detection area directly in front of the up / down, left / right reed switches 25b, 25c, so that there is no gap as a whole. A detection area is formed.

  16 and 17 show another modification of the magnetic detection unit. In the magnetic detection unit 22e of this modification, a magnetic shield 42 is provided around the rear portion of the housing 26. The magnetic shield 42 is formed by molding a ferromagnetic material (iron) into an endless annular plate piece, and is externally fitted to the housing 26 so as to cover the rear portion of the housing 26 from the periphery. In such a configuration, due to the action of the magnetic shield 42, the magnetic detection unit is unlikely to malfunction due to magnetism generated by a solenoid or other electronic device formed around the magnetic detection unit 22e. For this reason, in such a configuration, the magnetic detection unit can be disposed closer to other electronic devices, and the degree of freedom of arrangement of the magnetic detection unit is improved.

  FIG. 18 shows another modification of the magnetic detection unit. The magnetic detection unit 22f according to this modification is obtained by directly arranging one reed switch 25 inside a cylindrical housing 26c. Specifically, a housing portion 31c that opens to the back side is formed inside the housing 26c, and the reed switch 25 is housed in the housing portion 31c and fixed with an adhesive (not shown). Each terminal of the reed switch 25 is drawn rearward from the opening on the back side of the housing portion 31c, and is connected to the control device via a lead wire (not shown). A flange portion 28c having a through-hole 33 is provided around the rear end of the housing 26c. Like the magnetic detection unit 22 of the above embodiment, the flange portion 28c is in a state where the housing 26c is closely fitted in the mounting hole. The housing 26c is fixed to the game board 8 by screwing or nailing to the back of the game board 8.

  In addition, the pachinko machine in this invention can add a various change in the range which does not deviate from the summary of not only the form of the said Example but this invention.

  For example, at least one magnetic detection unit according to the present invention may be provided in a pachinko machine, and may include a magnetic sensor having another configuration.

  Further, the constituent material of the housing is not limited to resin, and nonmagnetic metal may be used. In addition, a magnetic material may be used as a constituent material of the housing as long as the performance of the magnetic detection unit is not significantly impaired.

  In the above embodiment, a plurality of reed switches are mounted on the substrate and then housed in the housing. However, the present invention is not limited to this configuration, and the reed switches arranged in a T-shape or X-shape are solidified with resin and integrated. This may be accommodated in a housing, or a plurality of reed switches may be accommodated in a case, and the case may be accommodated in the housing.

It is a perspective view of the pachinko machine 1 of an Example. 2 is a perspective view of a game board 8. FIG. 3 is a perspective view of a magnetic detection unit 22. FIG. 3 is an exploded perspective view of a magnetic detection unit 22. FIG. 2 is a partial cross-sectional view of the game board 8 including a mounting portion of a magnetic detection unit 22. FIG. It is explanatory drawing which shows the detection area C of the magnetic detection unit 22. FIG. It is a partial cross section of game board 8 concerning a modification. It is a perspective view of the magnetic detection unit 22a which concerns on a modification. It is a partial cross section of game board 8 concerning a modification. It is a partial cross section of game board 8 concerning a modification. It is a disassembled perspective view of the magnetic detection unit 22c which concerns on a modification. It is explanatory drawing which shows another arrangement | positioning aspect of the reed switch. It is explanatory drawing which shows another arrangement | positioning aspect of the reed switch. It is a disassembled perspective view of the magnetic detection unit 22d which concerns on a modification. It is explanatory drawing which shows the arrangement | positioning aspect of the reed switch 25 which concerns on a modification. It is a perspective view of the magnetic detection unit 22e which concerns on a modification. It is a partial cross section of game board 8 concerning a modification. It is a perspective view of the magnetic detection unit 22f which concerns on a modification. 6 is an explanatory diagram showing a detection area C of the reed switch 25. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pachinko machine 8 Game board 9 Transparent board 13 Wooden plywood 14 Cell board 18 Game nail 22,22a, 22b, 22c, 22d, 22e, 22f Magnetic detection unit 23,23a Mounting hole 25,25a, 25b, 25c Reed switch 26, 26a, 26b, 26c Housing 27, 27a, 27b, 27c Substrate 28, 28a, 28b, 28c Flange 29, 29a, 29b, 29c Holding groove 31, 31a, 31b, 31c Housing 32, 32a, 32b Connector 39 Adhesive 40 Elastic material 42 Magnetic shield A Game board surface B Magnet C, C1, C2, C3, C4 Detection area

Claims (9)

A magnetic detection unit comprising a reed switch for magnetic detection arranged inside the housing,
The magnetic detection unit is mounted so that the housing is fitted into a mounting hole formed forward on the back of the game board,
The pachinko machine, wherein the housing is fixed to a game board so as to support the inner surface of the mounting hole from the back side.   The pachinko machine according to claim 1, wherein the magnetic detection unit is formed by integrating a plurality of reed switches inside a housing.   The game board is formed by attaching a resin cell board to the front surface of a wooden plywood, the mounting hole penetrates the wooden plywood, and the inner surface of the mounting hole is constituted by the back surface of the cell board. The pachinko machine according to claim 1 or 2, wherein the pachinko machine is provided.   The pachinko machine according to any one of claims 1 to 3, wherein the housing is fixed to a game board so as to support an inner peripheral surface of the mounting hole.   The housing includes a flange portion that comes into contact with the back surface of the game board in a state of being fitted into the mounting hole, and is fixed to the game board surface by screwing or nailing the flange portion to the back surface of the game board. The pachinko machine according to any one of claims 1 to 4, wherein the pachinko machine is provided.   5. The housing according to any one of claims 1 to 4, wherein the housing includes an elastic material on an outer surface thereof, and is fixed to the game board by elastically contacting the inner peripheral surface of the mounting hole via the elastic material. A pachinko machine according to claim 1.   The pachinko machine according to any one of claims 1 to 4, wherein the housing is fixed to the game board by being bonded to an inner peripheral surface of a mounting hole.   The magnetic detection unit includes a substrate on which a reed switch and a connector that is electrically connected to the reed switch are mounted, and the end of the substrate is fitted into a holding groove formed inside the housing. The pachinko machine according to any one of claims 1 to 7, wherein the pachinko machine is held inside the housing.   The pachinko machine according to any one of claims 1 to 8, wherein a magnetic shield made of an endless annular ferromagnet is provided outside the housing of the magnetic detection unit.

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