JP2006149919A - Frame structure for pinball game machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a frame structure for the pinball game machines which can secure stable game actions by enabling the retaining and holding of the game board at the fixed position even against the repeated loading or unloading of the game board. <P>SOLUTION: The housing frame for housing detachably housing the game board 30 therein is provided with a positioning spindle 25 for positioning the game board 30 while having a turning spindle 51 extending longitudinally and retaining members 52 which are turnably mounted on the rear part of the rotary spindle and can get engaged with or disengaged from the rear surface of the face plate 31 and retaining/holding structures 50 for retaining and holding the game board 30 are installed at a plurality of locations surrounding the frame part. The plurality of retaining/holding structures 50 is so arranged that the individual retaining members 52 press the face plate 31 in the same direction within the plane orthogonal to the turning spindle when turned around the turning spindle 51 to be engaged with the rear surface of the face pate 31. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention provides a ball game machine provided with an accommodation frame for detachably accommodating a game board having a winning device into which a large number of game nails and game balls can be inserted on the front surface of a decorative board from the rear of the front frame. This relates to the frame structure.

  As a ball ball game machine provided with the above-mentioned storage frame, for example, a pachinko machine, a sparrow ball game machine, an arrange ball machine, etc. are widely known. In a pachinko machine that is a typical example of this type of gaming machine, a windmill, a fixed prize device, a symbol display device, various movable prize winning devices and movable decorations are mounted on the front surface of a decorative board, also called a veneer, together with a number of game nails. A game board to which game parts such as a device are attached is used, this game board is attached to a front frame which is an open / close mounting frame, and a ball processing mechanism board called a back mechanism board and a control device are attached to the rear thereof. An integrated pachinko machine is formed. In pachinko machines, the front frame and the back mechanism board, which are the bases of the machine body, are set with constant specifications for a certain period of time, while changing the production model at the manufacturing plant and so-called board change at the amusement facility can be performed easily. The front frame is formed with a housing frame that detachably accommodates the game board, and a game board formed with a different gauge setting for each model is accommodated and held in the housing frame to change the production model or the board surface. It is configured so that replacement can be easily performed.

  The housing frame is generally formed integrally with the front frame on the rear side or front side of the front frame, which is an open / close mounting frame, for example, a game board rear detachable configuration in which the game board is detached from the rear side of the front frame. The housing frame is mainly composed of a front support part in which a front support surface that supports the front surface of the decorative board is formed and a frame part that protrudes rearward from the front support part so as to surround the periphery of the decorative board. The Engagement holding structures that engage and disengage with a decorative plate housed inside the frame to lock and hold the game board in the housed state are provided at a plurality of locations around the frame portion on the outer periphery of the housing frame. . When the game board is housed in the frame part, the game frame (for example, a guide rail or a winning device) is provided on the front frame side when the game board is housed in the frame part. Some have a positioning structure for positioning the game board so as to be arranged in a certain positional relationship.

  As a locking holding structure for locking and holding the game board stored in the storage frame as described above, a rotating support shaft that protrudes rearward from the front support portion is provided on the outside of the frame wall of the storage frame, and its rear end A locking member that can be engaged with and disengaged from the rear surface of the decorative board is rotatably provided on the portion, and the game board is detachably locked and held by rotating the engaging member to engage and disengage from the rear surface of the decorative board. The configuration is widely used. In addition, as a positioning structure, a positioning pin that protrudes rearward from the front support portion is provided in the frame of the housing frame, and a positioning hole that can be fitted to and removed from the decorative plate is provided, and the game board is positioned by fitting these. It has been known. (For example, see Patent Document 1 and Patent Document 2).

JP-A-9-164254 JP 2003-325905 A

  However, in the conventional frame member, the locking holding structure is provided on the side of the left and right frame walls, and when the locking member is rotated from the release position to the locking position, the locking members are respectively left and right. It was configured to swing so as to project into the frame from the outside of the frame wall and engage with the back surface of the decorative plate. For this reason, the decorative plate engaged with each locking member is pressed forward in the front-rear direction and sandwiched between the front support surface, but the friction with the right locking member is within the vertical plane. While it is pressed leftward by the engagement, it is configured to be pressed rightward by frictional engagement with the left locking member (that is, a configuration pressed in the opposite direction).

  For this reason, the arrangement position and operation sequence of the locking structure provided on the left and right of the housing frame, the friction coefficient of the contact surface of the locking member and the decorative plate, the contact pressure between the locking member and the decorative plate, the front support surface, The latch holding position of the decorative plate has changed due to various factors such as the frictional resistance force held by the latch member. For example, when two places on the left side of the locking structure are locked first, the decorative plate is locked and held in contact with the right frame wall, and one place on the right side of the locking structure is locked first. When the two left-side locking structures are locked after being put into the state, the decorative plate is locked and held in contact with the right frame wall, and when the left and right are alternately locked. There is a problem that the holding position of the game board varies, for example, the decorative board is locked and held at the center of the frame portion.

  This problem has the same tendency even with a housing frame having a positioning structure, although there is a difference in degree, for example, the position of the decorative board is displaced according to the dimensional difference between the positioning pin and the positioning hole, and the game board There was a problem that the locking holding position changed. When the game board locking / holding position changes each time the game board is attached / detached in this way, the ball jumping changes or the rolling state of the game ball in the winning device changes, so that the operation of the gaming machine itself also changes. There was a problem that it might fluctuate.

  The present invention has been made in view of the problems as described above, and it is possible to hold and hold the game board at a fixed position even when the game board is repeatedly attached and detached, and to ensure a stable game operation. An object is to provide a frame structure of a gaming machine.

  In order to achieve the above object, the present invention provides a ball game in which a front frame of a decorative board is provided with a storage frame for detachably storing a game board having a winning device into which a plurality of game nails and a game ball can be dropped. This relates to the frame member of the machine (for example, the front frame 2 in the embodiment). The housing frame in the frame member includes a front support portion in which a front support surface that supports the front surface of the decorative plate is formed, a frame portion that protrudes rearward from the front support portion so as to surround the decorative plate, and a front portion It is configured to have a positioning support shaft that positions and supports the game board by fitting with a support shaft receiving hole that protrudes rearward from the support portion and penetrates the decorative board in the front-rear direction. A rotating support shaft (for example, the clamp shaft 51 in the embodiment) provided to extend rearward from the front support portion, and a makeup that is rotatably attached to the rear portion of the rotation support shaft and accommodated in the frame portion A latch holding structure that has a rear surface of the board and a latch member that can be engaged and disengaged, and is capable of latching and holding the game board in the housed state by engaging the latch member with the rear surface of the decorative board. Provided. And each latching holding structure of a plurality of places, when each latching member is rotated around the pivotal support shaft and engaged with the rear surface of the decorative plate, each latching member is orthogonal to the pivotal support shaft. The decorative board is arranged so as to be pressed in the same direction within the surface to be constructed to constitute the frame structure of the ball game machine.

  In the frame structure described above, there are provided a plurality of locking holding structures that have locking members that can be engaged with and disengaged from the rear surface of the decorative plate at the frame portion of the storage frame and that can hold the game board in the storage state. The plurality of locking holding structures are configured so that each locking member is rotated within the plane orthogonal to the rotation support shaft when the lock member is rotated about the rotation support shaft and engaged with the rear surface of the decorative plate. It arrange | positions so that a decorative board may be pressed in the same direction. For this reason, when the plurality of locking members are rotated from the release position to the locking position, the decorative plate is pressed in the predetermined direction regardless of the operation order of the locking holding structure, and the decorative plate is locked. The holding position does not vary in the opposite direction.

  Further, in the frame structure of the present configuration, the housing frame is provided with a positioning support shaft that protrudes rearward from the front support portion, and is fitted with a support shaft receiving hole formed through the decorative plate in the front-rear direction. It is configured to position and support the board. For this reason, the decorative plate is pressed in the predetermined direction in a state where the decorative plate is positioned and supported by fitting the positioning support shaft and the support shaft receiving hole. This direction is a constant direction in a plane orthogonal to the rotation support shaft, that is, a direction orthogonal to the front-rear direction in which the positioning support shaft extends. Therefore, the decorative plate is positioned by fitting between the positioning support shaft and the support shaft receiving hole, and is pressed in one direction orthogonal to the direction in which the positioning support shaft extends, while being supported by the positioning support shaft. The displacement direction and the displacement amount are always in a certain direction and within a certain fitting tolerance.

  Therefore, according to the frame structure of the present invention, even when the game board is repeatedly attached and detached, the game board can be disposed and held at a fixed position, and the seat of the game ball launched from the game ball launching device can be held. It is possible to provide a frame structure of a ball game machine that can secure a stable game operation by making a rolling state in a winning device such as a position, a ball jump, and a clown constant.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings. As an example of a ball game machine equipped with a front frame of a frame structure according to the present invention, a pachinko machine in a game board rear detachable form is illustrated in each of FIGS. 1 to 3, and first refer to these drawings. The overall configuration of the pachinko machine PM will be briefly described. Here, FIG. 1 is a perspective view of the pachinko machine PM viewed obliquely from the front, FIG. 2 is a perspective view of the front glass door and the upper ball dish opened sideways, and FIG. 3 is a perspective view of the pachinko machine PM viewed from the diagonal rear. FIG.

  In the pachinko machine PM, the front frame 2 for opening and closing mounted on the front surface of the outer frame 1 that is configured to have a rectangular frame size and forms a vertically fixed holding frame is arranged on the front surface of the opening and closing mounted to each other. The hinge mechanisms 3a and 3b arranged on the upper left and right sides of the front face are attached to the front so that they can be opened, closed and detached. The locking mechanism 4 provided on the right side of the front face is always used to engage and connect with the outer frame 1. Held closed.

  On the front side of the front frame 2, a rectangular glass door 5 and an upper ball tray 6 adapted to the front side area are assembled so as to be opened and closed laterally and detachable. The launching handle 8 is assembled, and the driving mechanism of the game ball launching device 9 is mounted on the lower rear side of the front frame 2. A storage frame 20 that will be described in detail later is formed integrally with the front frame 2 at the upper part of the front frame 2, and a game board 30 configured with a predetermined gauge setting can be attached to and detached from the storage frame 20 from the rear of the front frame. The game area PA on the front side of the game board faces the glass door 5 which is housed and held and locked using a lock holding structure 50 provided in the periphery, and is always closed and held. An auxiliary mechanism unit 10 called a game assisting board is provided below the housing frame 20, and a launching mechanism unit of the game ball launching device 9 and a lower speaker are provided on the front side thereof.

  The game board 30 includes, for example, an inner rail member 37 and a front frame attached to the front surface of the decorative board side 31 with a decorative board 31 that is a router processed by attaching cells to the surface of a laminated plywood having a thickness of about t = 19 mm. In the accommodated state of the game board 30, a substantially circular game area PA is formed by the inner and outer rail portions 21a and 21b formed in FIG. Although not shown in detail in the game area PA, a large number of game nails 32 (see FIGS. 6 to 8) are projected from the front surface of the decorative board 31 and fixed so that the game ball can be dropped. A winning device, an electric tulip-type or attacker-type movable winning device, a central ornament with a symbol display device that displays a symbol according to the game development status, etc. are attached, and a decorative board 31 is attached to the lower end of the game area PA. An out port 38 penetrating in the front-rear direction is formed.

  A back mechanism board is provided on the back side of the front frame 2. The back mechanism board is provided in an inverted L-shaped upper back mechanism board 41 provided in a height range above the lower end face of the decorative board 31 and in a height range below the lower end face of the decorative board 31. 3 which is horizontally long and is provided with a hinge mechanism provided on the right side of the back of the front frame 2 so as to be independently openable and closable and detachable. As shown, each of the decorative plates 31 and the game auxiliary board 10 is closed and held so as to cover the back.

  The upper back mechanism board 41 is mainly provided with a prize ball payout mechanism and a ball removal mechanism such as a ball storage tank 41 a and a ball payout device 41 b, and a safe discharged from the game board 30 on the front side of the lower back mechanism board 42. A game-completed ball discharge passage 42b (see FIG. 4) for guiding a game-completed ball such as a ball or out-ball to the collection device of the game facility, a main controller 43 for controlling the operation of the pachinko machine PM on the rear side, and a game ball payout Various control devices such as a ball payout control device 44 for controlling the operation and a power supply unit 45 for supplying electric power to each control device and electronic components are attached, and these are connected by a connector cable so that the pachinko machine PM can be operated. The

  The pachinko machine PM is provided for the game with the upper ball tray 6 and the glass door 5 closed and locked, and the game is started by storing the game ball in the ball tray of the upper ball tray 6 and operating the launch handle 8. Is done. When a launch operation is performed at the launch handle 8, the game balls stored in the upper ball tray 6 are sent to the game ball launcher 9 one by one, and are launched into the game area PA by the hammer of the game ball launcher to be played. Is expanded.

  In the pachinko machine PM configured as described above, a housing frame 20 for housing the game board is provided on the upper part of the front frame 2, and the game board 30 is detachably locked and held on the periphery of the housing frame. A locking holding structure 50 is provided. Hereinafter, the configuration of the storage frame 20 and the locking and holding structure 50 will be described in detail with reference to FIGS. 4 to 9 together.

  Here, FIG. 4 is a perspective view of a state in which the front frame 2 is opened to the front of the outer frame 1 and the upper and lower back mechanism boards 41 and 42 are opened to the rear of the front frame 2, and FIG. The perspective view from the rear of the front frame mainly showing the storage frame, FIGS. 6 to 8 are sectional views showing the state until the game board 30 is received and locked in the storage frame 20 in time series, and FIG. 7 is a cross-sectional view showing a state immediately before housing the board, FIG. 7 is a state in which the positioning support shaft and the support shaft receiving hole are fitted, and FIG. 8 is a state in which the decorative plate housed in the frame portion is fixed by the locking holding mechanism. (Cross-sectional view in the direction of arrow VIII to arrow in FIG. 4), FIGS. 9A and 9B are rear views showing the relationship between the decorative plate 31 and the locking member 52, and FIG. FIG. 5B shows a state in which the locking holding structure 50 is displaced from the releasing position to the locking position. In the following description, the left and right directions in the rear view are referred to as “left / right” in order to describe the housing frame 20 with reference mainly to the drawings when viewed from the rear.

  The housing frame 20 includes a front support portion 21 in which a front support surface 22 that supports the front surface of the decorative plate 31 is formed, and a frame portion 23 that protrudes rearward from the front support portion 21 so as to surround the decorative plate 31. And a positioning support shaft 25 for positioning the game board by engaging with a support shaft receiving hole 35 provided so as to protrude rearward from the front support portion 21 and penetrating the decorative plate 31 back and forth. It is formed integrally with the frame 2.

  In the center of the front support portion 21, a window opening 21 w is formed which communicates with the front and rear and opens in a substantially circular shape. The window opening 21w is formed in a cylindrical shape that protrudes backward at a certain height from the front support portion 21, and receives the game ball launched from the game ball launcher 9 on the inner surface of the cylinder and guides it to the game area PA. An outer rail portion 21a and an inner rail portion 21b that extends downward from a return rubber (not shown) provided at the end of the outer rail portion are formed. The rear end portion of the window opening 21w is flatly molded to form a substantially annular front support surface 22, and the game board 30 is supported in the front-rear direction by abutting and supporting the front surface of the decorative board 31 accommodated and held in the accommodation frame 20. This is the reference plane for positioning.

  An outer shell square frame portion 23 is formed so as to protrude rearward from the front support portion 21 and is located outside the window opening 21w. The frame portion 23 is composed of an upper frame wall 23U, a lower frame wall 23D, a left frame wall 23L, and a right frame wall 23R, and the inner surface intervals of the upper and lower frame walls 23U and 23D and the left and right frame walls 23L and 23R are It is set somewhat larger than the upper, lower, left and right outer dimensions of the decorative plate 31. The projecting height in the front-rear direction of each frame wall is such that the height from the front support surface 22 to the rear end of the frame wall is the same as or slightly smaller than the thickness of the decorative board 31. When accommodated in the accommodation frame 20, the decorative plate 31 is accommodated in the frame portion 23, and the upper, lower, left, and right frame walls cover the periphery of the decorative plate 31. Reinforcing ribs 23b are formed at predetermined intervals on the lower surfaces of the upper and lower frame walls 23U and 23D.

  Speaker mounting portions for screwing the upper speaker are formed on the front side of the front support portion 21 on the upper left and right sides of the housing frame 20, and the rear portion of the upper speaker screwed on the rear surface side of the front support portion 21. A speaker housing portion 24 that surrounds the entire periphery is formed integrally with the frame portion 23 so that the reverse phase sound emitted to the back side of the speaker does not leak to the front side of the game board, that is, to the front of the gaming machine. The positive phase sound is reproduced with a clear pitch without distortion.

  On the other hand, the decorative plate 31 is formed to be slightly smaller than the outer shape of the decorative plate 31 in accordance with the shape of the frame portion 23 including the speaker accommodating portion 24, and aligned with positioning support shafts 25 and 25 described below. Support shaft receiving holes 35, 35 penetrating the plate surface are formed. The hole diameter of the support shaft receiving hole 35 is slightly larger than the shaft outer diameter of the fitting shaft portion 25b.

  Positioning support shafts 25, 25 are provided to protrude rearward from the front support portion 21 at two locations on the upper left side and lower right side inside the frame portion surrounded by the frame wall as described above. The positioning support shaft 25 includes a pedestal portion 25a having a relatively large diameter bulged rearward from the front support portion 21, and a fitting shaft portion 25b having a smaller diameter than the pedestal portion and projecting further rearward from the pedestal portion 25a. Considering the mass of the game board 30, for example, the outer diameter of the pedestal 25a is about 20 mm, the outer diameter of the fitting shaft 25b is about 10 mm, and the wall thickness is about 3 mm. Set to

  An annular front support surface 26 is formed at the rear end of the pedestal portion 25a (the base end of the fitting shaft portion 25b) on the same plane as the front support surface 22 formed at the rear end of the window opening 21w. The front surface of the decorative board 31 is abutted and supported together with the front support surface 22 surrounding the window opening 21w, and serves as a positioning reference in the front-rear direction of the game board 30. The two upper and lower positioning support shafts are a reference for defining the vertical / left / right position of the decorative board 31 and the rotational direction position about the axis orthogonal to the board surface. For example, the lower right positioning support shaft is the upper / lower position of the game board 30. The positioning reference in the left-right direction and the positioning support shaft in the upper left are used as the positioning reference in the rotation direction of the game board 30.

  The height of the positioning support shaft 25 is hj, which is the height from the front support surfaces 22 and 26 to the rear end of the fitting shaft portion 25b (hereinafter referred to as “fitting shaft height”). The height of the game nail 32 from the front surface of the decorative board to the front end (hereinafter referred to as “nail height”) is hk, and the height from the front support surfaces 22 and 26 to the rear end surface of the frame portion 23 (hereinafter referred to as “frame height”). )) Is set so that the fitting shaft height hj> the nail height hk and the fitting shaft height hj> the frame height hw. Further, when the depth of the support shaft receiving hole 35 from the front surface of the decorative plate (hereinafter referred to as “fitting hole depth”) is ha, the fitting shaft height hj> the fitting hole depth ha. It is set.

  Specifically, in the pachinko machine PM illustrated in each drawing, the fitting shaft height hj of the positioning support shaft 25 is 21 mm, the fitting hole depth ha of the support shaft receiving hole is 19 mm, and the frame height hw of the housing frame In addition, a configuration example in which the nail height hk of the game board is set to 18 mm is shown.

  Locking holding structures 50 for locking and holding the game board 30 in the storage state are provided at four locations on the outer side of the frame wall of the storage frame 20. The locking and holding structure 50 includes a clamp shaft 51 provided with a front end portion fixed to the front support portion 21 and a rear end portion extending rearward from the frame portion 23, and a proximal end side pivoted to the clamp shaft 51. A locking member 52 that is supported on and disengaged from the back surface of the decorative plate 31 accommodated in the frame portion 23, a coil spring 53 that biases the locking member forward, a plain washer 54, and a nut 55 for preventing loosening. And a cap nut 56 for locking the coil spring 53 in a compressed state.

  The clamp shaft 51 shows an example constituted by using, for example, a hexagonal bolt of about M6 × 55, and the support boss 27 that supports the clamp shaft 51 is formed on the front support portion 21. The spindle boss 27 has a side dimension slightly larger than the hexagonal shape of the bolt head and has a head receiving part 27a formed on the front side of the front support part 21 and the head receiving part 27a. Furthermore, it is formed of a boss portion 27b formed in a cylindrical shape with an inner diameter somewhat larger than the outer diameter of the shaft portion of the clamp shaft 51. The front frame protrudes rearward from the front support portion 21. 2 and one.

  The rearward projecting height of the support boss 27 is the height of the boss when hb is the height from the front support surfaces 22 and 26 to the rear end surface of the boss portion 27b (hereinafter referred to as “boss height”). More specifically, when the locking member 52 is engaged with the back surface of the decorative plate 31 such that the length hb is somewhat smaller than the plate thickness t of the decorative plate 31, the locking member 52 has a boss portion. 27b is set so as to be slightly lifted from the rear end face, and for example, hb = 18.5 mm is set in the illustrated embodiment.

  The locking member 52 includes an L-shaped lever portion 52a in cross-sectional view and a cylindrical spring accommodating portion 52b formed on the base end side of the lever portion 52a. For example, polyamide (PA) or polyacetal (POM) ) Or the like, and integrally formed by injection molding or the like, or a cylindrical spring accommodating portion is caulked and fixed to a lever portion obtained by press-molding a steel plate having a thickness of about 2 mm. A front end portion of the front side of the lever portion 52a that engages with and disengages from the rear surface of the decorative plate 31 is formed with an introduction portion 52c by obliquely chamfering an end surface corner portion, and the engaging member 52 is rotated to rotate the decorative plate 31. When engaged, the introduction portion 52 c is engaged so as to ride on the edge of the decorative plate 31, and the lower surface of the lever portion 52 a is smoothly engaged with the back surface of the decorative plate 31.

  A receiving seat is formed on the rear surface of the decorative plate 31 that engages with the locking member 52 (for example, the engaging portion with the locking member 52 is counterbored to be smaller than the plate thickness of the decorative plate 31, or A metal or resin receiving seat is formed on the rear surface of the decorative plate 31 with a screw or the like so as to be larger than the plate thickness), or a locking surface of the locking member 52 that engages the back surface of the decorative plate 31 (each figure). The front surface of the lever portion 52a may be offset back and forth from the front surface of the spring housing portion 52b. In such a case, the height hb of the support boss 27 may be When the engaging surface is engaged with the rear surface of the decorative plate 31 or the receiving seat, the spring accommodating portion 52b of the engaging member may be set in a dimensional relationship so as to slightly lift from the rear end surface of the boss portion 27b. In addition, regarding the relationship between the height position of the support boss 27 and the height position of the frame portion 23, the height of the frame wall is set so that the lever portion 52 a does not contact the frame wall 23 when the locking member 52 is turned. For example, the height of the frame wall 23 in the vicinity of the locking holding structure 50 may be configured to be partly lower according to the height of the locking surface of the locking member 52.

  The locking and holding structure 50 is configured such that the clamp shaft 51 is inserted from the head housing portion 27a side of the front surface of the front frame so that the tip end side of the screw shaft protrudes from the boss portion 27b to the rear surface side of the front frame. 52, a coil spring 53, and a flat washer 54 are sequentially mounted, and a locking nut 55 and a cap nut 56 are screwed into a male screw portion at the rear end of the screw shaft, and the coil spring 53 is set to a predetermined compression length. By doing so, the front frame 2 is assembled.

  When the latch holding structure 50 is assembled, the latch member 52 is always urged forward by the spring force of the coil spring 53, and the spring accommodating portion 52b of the latch member abuts and supports the rear end surface of the boss portion 27b. In this state, it is rotatably supported around the clamp shaft 51 (see FIGS. 6 and 7). The locking and holding structures 50 are provided at four locations on the top, bottom, left and right so as to surround the frame portion 23, and each locking and holding structure 50 is rotated when the locking member 52 is rotated around the axis of the clamp shaft 51. In addition, the lever portion 52a is retracted outside the frame portion 23 or aligned with the notch portion 31k formed on the decorative board 31, so that the game board 30 can be freely attached and detached (FIGS. 6, 7 and 9). a)) and a locking position that protrudes inward of the frame portion 23 in the rear view and engages the rear surface of the decorative plate 31 to lock and hold the game board 30 in the housing frame 20 (FIGS. 8 and 9B). ) To be able to swing and displace.

  Now, with respect to the process of mounting the game board 30 on the housing frame 20 configured as described above, FIGS. 6 to 8 showing the mounting state of the game board in cross-sectional views, and the decorative board 31 in the release position and the locking position. The relationship with the locking member 52 will be described with reference mainly to FIG. First, the front frame 2 is opened to the front of the outer frame 1, and the upper and lower back set panels 41, 42 are opened to the rear of the front frame (see FIG. 4). The locking member 52 is set to the release position shown in FIG. 9A, and the game board 30 is inserted from the rear of the housing frame 20 as shown in FIGS.

  Then, the decorative plate 31 is brought close to the frame portion 23 while aligning the two upper and lower support shaft receiving holes 35 with the positioning support shaft 25, and the front end opening of the support shaft receiving hole 35 is moved to the rear end portion of the positioning support shaft 25. Engage with. The rear end portion of the fitting projection 25 (the rear end corner portion of the shaft portion 25b) is tapered, and the decorative plate 31 is guided by the guiding action of the tapered surface to fit the support shaft receiving hole 35. The mating protrusion 25 is smoothly fitted (FIG. 7).

  As described above, the fitting shaft height hj of the positioning support shaft 25 is configured to have a relationship of hj> hw with the frame height hw of the frame portion 23. For this reason, in the initial state in which the game board 30 is accommodated in the accommodation frame 20, the upper and lower support shaft receiving holes 35 are located behind the positioning support shafts 25 before the decorative plate 31 enters the frame of the frame portion 23. Engaging with the end portion, the decorative plate 31 is positioned at the appropriate reference position in the vertical and horizontal directions and in the rotational direction. When the upper and lower positioning support shafts 25 are not fitted into the support shaft receiving holes 35 and contact the front surface of the decorative plate 31, the decorative plate 31 has a relationship of fitting shaft height hj> frame height hw. It will be in the state which floated up without entering the inner side of the frame part 23. FIG. Accordingly, in any of the above cases, the peripheral corner portion of the decorative plate 31 does not hit the rear end of the frame portion 23.

  Next, in the state where the upper and lower positioning support shafts 25 are fitted to the front edge portions of the support shaft receiving holes 35 as described above, and the position of the decorative board 31 in the vertical and horizontal directions and the rotational direction is positioned, the game board 30 is Press forward. Then, the decorative plate 31 is guided by the fitting of the upper and lower positioning support shafts 25 and the support shaft receiving holes 35, and slides forward at the vertical and horizontal and rotational positions as they are, so that the front side of the decorative plate 31 is the frame portion 23. It enters the inside of the frame part 23 without hitting the rear end.

  Here, the fitting shaft height hj of the positioning support shaft 25 is configured to have a relationship of hj> hk with the nail height hk of the game nail 32. For this reason, in the process of housing the game board 30 in the housing frame 20, when the game nail 32 protruding from the front surface of the decorative board 31 enters the opening of the window opening 21w, the upper and lower positioning support shafts 25 are already present. And the support shaft receiving holes 35 are fitted to position the decorative plate 31 in the vertical, horizontal, and rotational positions, and the game nails to be disposed in the game area PA have already been opened on the opening surface of the window opening 21w. It is arranged at an appropriate position in the area. Therefore, when the decorative board 31 is slid forward, the game nail 32 does not collide with the front support surface 22 or the inner and outer rail portions 21a, 21b, and enters the opening surface area as it is.

  Therefore, when the game board 30 is further pressed forward and slid, the front surface of the decorative board 31 is formed at the rear end of the window opening, and the front support surface formed at the pedestal portion of the positioning support shaft 25. 26, a game area PA surrounded by inner and outer rail portions 21 a and 21 b is formed on the front side of the decorative plate 31, and the decorative plate 31 is accommodated in the frame portion 23.

  In the accommodated state, the rear end portion of the positioning support shaft 25 is disposed so as to protrude from the support shaft receiving hole 35 to the back side of the decorative plate 31, so that the operator can move the upper and lower positioning support shafts 25 (fitting shaft portions 25 b). By visually confirming whether or not the rear end portion protrudes to the back side of the decorative board 31, the storage state of the game board can be easily grasped. Since the game board 30 is supported by the entire length of the support receiving hole 35, the game board does not slide down even if the decorative board 31 is not always pressed forward. Therefore, when it is confirmed that the game board 30 is accommodated, a finger is put on the lever portion 52a of the locking member while gently supporting the back surface of the decorative board 31, and each locking member 52 is sequentially turned as shown in FIG. Operation.

  The locking member 52 is biased and supported in a state in which the locking member 52 is pressed forward by the coil spring 53 and the spring accommodating portion 52b is in contact with the boss portion 27b. When the side is rotated around the axis of the clamp shaft 51, the front side end of the lever portion 52 a comes into contact with the rear end corner of the decorative plate 31. A tapered introduction portion 52c is formed at the front side end portion of the lever portion 52a, and the locking member 52 is further rotated in a state where the introduction portion 52c is in contact with the rear end corner portion of the decorative plate 31. Then, the tapered introduction portion 52 c moves so as to ride on the edge of the decorative plate 31, and the front surface of the lever portion 52 a and the rear surface of the decorative plate 31 while pressing the decorative plate 31 forward by the elastic force of the coil spring 53. Engage. For this reason, the decorative board 31 is urged | biased ahead, is contact | abutted and supported by the front support surface 22, and is latched and hold | maintained in the state clamped between the front support surface 22 and the lever part 52a (FIG. 8).

  Here, in the locking process by the locking member 52, the front surface of the lever portion 52 a is rotated by the spring force of the coil spring 53 while being pressed against the rear surface of the decorative plate 31. A frictional force corresponding to the coefficient of friction and pressure between the rear surface of the decorative plate is generated. For this reason, in addition to the decorative plate 31 being pressed forward, which is the urging direction of the locking member 52, the decorative plate 31 is applied to the plate surface of the decorative plate 31 by the frictional force generated between the front surface of the lever portion and the rear surface of the decorative plate. It is pressed also in the displacement direction of each lever part 52a within the vertical plane along.

  In the frame structure of this configuration, when the locking holding structures 50 provided at the upper and lower four positions are respectively engaged with the rear surface of the decorative plate 31 by rotating the locking members 52, the locking members 52 are clamped. The decorative plate 31 is provided at a position where the decorative plate 31 is pressed in the same direction within a plane orthogonal to the shaft 51 (in a vertical plane along the plate surface of the decorative plate 31). That is, the frictional force generated between each locking member 52 and the decorative plate 31 when each locking member 52 is rotated from the release position toward the locking position as shown in FIG. Are provided at positions where the decorative plate 31 is pressed to the left. For this reason, when the four retaining holding structures 50 are sequentially rotated from the release position to the locking position, the decorative board 31 is indicated by a white arrow in the figure regardless of the operation order of the locking members 52 or the like. The latch holding position of the decorative board 31 does not fluctuate in the left and right direction each time the left side is pressed and the game board 30 is attached or detached.

  Furthermore, in the frame structure of this configuration, cylindrical positioning support shafts 25 that protrude rearward from the front support portion 21 are provided at two positions on the upper and lower sides of the housing frame 20, and circular holes that are formed through the decorative plate 31 in the front-rear direction. The game board 30 is configured to be positioned and supported by being fitted with a cylindrical support shaft receiving hole 35. For this reason, the decorative board 31 is pressed in a fixed direction (left direction) in a state where the decorative board 31 is positioned and supported by the fitting of the positioning support shaft 25 and the support shaft receiving hole 35. This direction is a constant direction in the vertical plane perpendicular to the direction in which the clamp shaft 51 extends, that is, the direction in which the positioning support shaft 25 extends. Accordingly, the decorative plate 31 is pressed in a fixed direction perpendicular to these fitting shafts while being positioned and supported by fitting the shaft pins of the positioning support shaft 25 and the support shaft receiving hole 35 with the shaft holes. The board 30 is always arranged at a fixed position in the left direction within a fixed fitting tolerance.

  Therefore, according to the frame structure described above, the game board 30 can be locked and held at a fixed position of the housing frame 20 even if the game board 30 is repeatedly attached and detached, and the game ball launched from the game ball launching device 9 Stable game operation can be ensured by stabilizing the seating position, the ball jumping, and the rolling state of the winning device such as the croon.

  In the embodiment described above, as a configuration example of a frame structure in which a plurality of locking and holding structures 50 are arranged to press and hold the game board 30 in a certain direction, as shown in FIG. 9B. An example in which the locking holding structures 50 are provided at four positions in various arrangement positions and operation directions has been described. However, the present invention is not limited to such a configuration example, and can be changed as appropriate without departing from the spirit of the present invention. For example, as in the embodiment described above, as a configuration for pressing the decorative plate 31 leftward, as shown in the rear view in FIG. 10 or 11 with the same reference numerals as in FIG. The same effect can be obtained even if the decorative plate 31 is locked and held in the operation direction as shown in the figure. Further, the pressing direction of the decorative plate 31 may be rightward or downward in a plane orthogonal to the direction in which the positioning support shaft 25 extends, and the number of the locking holding structures 50 is locked without lifting the decorative plate 31. If possible, the structure provided in three places or five places or more may be sufficient.

It is the perspective view which looked at the pachinko machine shown as an example of the ball ball game machine to which the frame structure concerning the present invention is applied from diagonally forward. It is a perspective view of the said pachinko machine of the state which opened and opened the glass door and ball tray unit of the front side. It is the perspective view which looked at the said pachinko machine from diagonally backward. It is a perspective view of a state where the front frame is opened to the front of the outer frame and the upper and lower back mechanism boards are opened to the rear of the front frame. It is the perspective view from the front frame back which mainly shows a storage frame in the state which removed the game board. It is sectional drawing (1) which shows the state until a game board is accommodated in an accommodation frame and latching fixed, and is drawing which shows the state just before mounting | wearing a game board. It is sectional drawing (2) which shows the state until a game board is accommodated in an accommodation frame, and is locked and fixed in time series, It is drawing of the initial state which fitted the positioning support shaft and the protrusion receiving hole. It is sectional drawing (3) which shows the state until a game board is accommodated in an accommodation frame, and is locked and fixed in time series (3), Drawing which shows the state which fixed the decorative board accommodated in the frame part by the latching holding mechanism (FIG. 4 is a cross-sectional view in the direction of arrows VIII to 4 in FIG. It is a rear view which shows the relationship between a decorative board and the locking member of a locking holding structure, (a) is the state which has arrange | positioned the locking holding structure in a releasing position, (b) is displaced from a releasing position to a locking position. Indicates the state of the It is a rear view (back view similar to FIG.9 (b)) which shows the other structural example of the frame structure based on this invention. It is a rear view (back view similar to FIG.9 (b)) which shows the other structural example of the frame structure based on this invention.

Explanation of symbols

PA game area PM pachinko machine 1 outer frame 2 front frame 20 housing frame 21 front support portion 22 front support surface 23 frame portion 25 positioning support shaft 26 front support portion 30 game board 31 decorative board 32 game nail 35 support receiving hole 50 Stop holding structure 51 Clamp shaft (Rotating support shaft)
52 Locking member

Claims (1)

In a frame member of a ball game machine provided with a housing frame that detachably accommodates a game board having a winning device into which a large number of game nails and game balls can be dropped on the front surface of the decorative board,
The housing frame is
A front support portion formed with a front support surface that supports the front surface of the decorative plate, a frame portion that protrudes rearward from the front support portion so as to surround the periphery of the decorative plate, and a rear portion from the front support portion A positioning support shaft for positioning and supporting the game board by fitting with a support shaft receiving hole formed so as to protrude through the decorative plate and back and forth,
In the frame part,
A pivot shaft extending rearward from the front support portion and a rear surface of the decorative plate, which is pivotally attached to the rear portion of the pivot shaft and accommodated in the frame portion, can be engaged with and disengaged. A latch holding structure capable of latching and holding the game board in the housed state by engaging the latch member with the rear surface of the decorative plate,
Each locking holding structure provided in the plurality of locations is
When the locking member is rotated about the rotation support shaft and engaged with the rear surface of the decorative plate, each of the locking members is within the plane orthogonal to the rotation support shaft. A frame structure of a bullet ball game machine characterized by being configured to press in the same direction.

Images