JP4274292B2 - Ball return prevention device for pachinko machines - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides a ball return in a pachinko machine that is mounted in the vicinity of the outlet in order to prevent flying balls released from the outlet at the end of the ball passage from returning to the ball passage. The present invention relates to a prevention device.
[0002]
In this specification, the terms “firing ball”, “flying ball”, and “returning ball” are used. The term “firing ball” refers to an internal and external 2 described later. A pachinko ball located in the ball passage formed in the overlapping part of the rails of the book, and the `` flying ball '' is released to the play area from the exit of the end of the ball passage, A pachinko ball jumping between them is shown, and the “return ball” indicates a pachinko ball that is about to return to the ball passage among the flying balls.
[0003]
[Prior art]
In the pachinko machine, as shown in FIG. 1, two rails R ₁ and R ₂ having a substantially arc shape are attached to the game board, and the two rails R ₁ and R ₂ are In a part (the left side of the board surface), the passage formed by the rails R ₁ and R ₂ inside and outside the overlapped portion is attached in a state of being overlapped at a predetermined interval, and the passage is launched from the launching device. A pachinko ball path 1 is formed. The pachinko ball fired from the launcher at the speed selected by the player is guided to the outer rail R ₂ out of the _two inner and outer rails R ₁ and R ₂ forming the ball path 1, and the inner rail It reaches the upper end (end) of R ₁ and is released from the outlet 2 of the part to the play area of the game board 3. In this manner, the flying ball released from the outlet 2 at the upper end (end) of the inner rail R ₁ collides with the play nail and jumps in the play area. Some flying balls return to the ball passage 1 from the outlet 2. In this case, the launch ball and the return ball collide with each other in the ball passage 1, and the pachinko ball cannot be released to a specific position in the play area desired by the player. Depending on the weight, it may be impossible to release the pachinko ball to the play area itself.
[0004]
In order to prevent the above-described problems, as disclosed in Japanese Utility Model Publication No. 3-30138, a tongue piece made of an elastic material is attached to the upper end portion of the inner rail forming the outlet of the pachinko ball. There is something. The tongue piece made of this elastic material has its upper half portion that has entered the outlet, and its lower half portion is fixed to the inner rail, and only the upper half portion is centered on the fixing portion. Is elastically deformable. For this reason, the presence of the tongue piece whose upper half has entered the outlet port prevents the return ball from entering the ball passage. It is elastically deformed to the side, and can be released to the play area. However, this tongue piece has a structure that is greatly elastically deformed and bent whenever the shot ball is released to the play area. Therefore, when the tongue piece is repeatedly bent, the elastic force is reduced, and there is a problem that the tongue piece is finally damaged.
[0005]
In order to prevent the above problems, a technique disclosed in Japanese Utility Model Laid-Open No. 6-15687 has been proposed. The ball return prevention device includes a case main body attached near the upper end of the inner rail, and a plate-shaped ball return prevention blade loosely fitted to a support nail provided in the case main body. The ball return prevention blade is provided above the loose-fit support portion that is loosely supported by the support nail and the loose-fit support portion. In order to maintain a partially closed state of the outlet 2 by closing a part of the inlet 2 and preventing the return ball from returning into the ball passage 1 and the outlet 2 by the blade. In addition, it is composed of three parts, a weight part provided below the loosely fitting support part, and only the blade plate part protrudes from the case body.
[0006]
The ball return prevention device requires a total of three parts including two resin parts, a case main body, a ball return prevention blade, and a support nail for loosely supporting the ball return prevention blade. In addition, a plurality of machine screws are required to fix the case body to the game board. For this reason, there is a problem that the number of components increases and the number of assembling steps increases, resulting in poor assembling workability.
[0007]
[Problems to be solved by the invention]
It is an object of the present invention to simplify the configuration and reduce the number of assembling steps by minimizing the number of parts constituting the ball return prevention device of the pachinko machine.
[0008]
[Means for Solving the Problems]
The invention according to claim 1 for solving the above-mentioned problem is a ball passage capable of passing a launch ball launched from the launcher unit side between an outer rail and an inner rail attached to a play area of a game board. A ball return prevention member for preventing the flying ball released to the play area from the outlet opened at the upper end of the ball passage from becoming a return ball and returning to the ball passage. A ball return prevention device that is rotatably mounted on and supported by a support pin made of the same nail as a play nail that is driven into and fixed to a play board in the vicinity of the outlet, wherein the ball return prevention member comprises: It is a synthetic resin integral molded product, and is provided in a slightly lower part than the center part in the up-down direction, and is fitted in a shaft part of the support pin in a lateral direction so as to be rotatably fitted and supported so as to be rotatable. A loosely-fitting support part, and provided above the loosely-fitting support part, A plate-shaped vane plate portion that can be received and a weight portion that is provided below the loose fitting support portion via a connecting plate portion are formed in series, and the loose fitting support portion includes the support pin. both the hole the fitting to be capable of freely fitted to the shaft portion is formed along the axial direction through the slit of the opening width narrower than the inner diameter of the hole the fitting該被is formed in the axial direction, The loose fitting support portion is configured to be deformable into a state in which the slit is elastically expanded and contracted in the inner and outer directions of the diameter using the slit, and the ball return prevention member is formed by the loose fitting support portion. The loose-fit support portion is elastically deformed and loosely supported by fitting the slit of the loose-fit support portion to the shaft portion of the support pin and fitting it sideways with the slit toward the inner rail. When the projecting ball is not passing, the weight plate closes the outlet by the weight portion. Each time the fired ball is released from the outlet into the play area, it is pushed open while abutting against the blade plate portion of the ball return prevention member and rotating the ball return prevention member. When the flying ball in the play area is returned to the outlet as the return ball, the return ball is released and closed in the closed state. It is configured such that it is brought into contact with the slats and rebounds inside the play area to prevent entry into the ball passage.
[0009]
Since the ball return prevention member is supported by being inserted into the support pin in a sideways manner in a loosely-fitted state at the part of the loose-fitting support part, when the slight force acts on the blade plate part, the loose-fitting support part When the force acting on the slats is released, the ball returns by the return action of the weight part provided below the loose-fit support part. The entire prevention member instantaneously returns to the original position (a position where the slats can enter the opening and prevent the ball from returning).
[0010]
For this reason, when the projecting ball that has risen up the ball passage collides with the blade plate portion of the ball return prevention member, the ball return prevention member is rotated clockwise (with the weight portion inside) around its own loose-fitting support portion. (In the direction approaching the rail) instantaneously, and immediately after the launch ball is released from the opening to the play area, the return to the weight part provided at the lower part of the ball immediately returns to the original position. It returns to a state where it can prevent the ball from returning. Further, since the slit formed in the axial direction in the loosely fitting support portion of the ball return preventing member is in a direction facing the inner rail in a state where the loosely fitted support portion is fitted in the support pin, the return ball Can be prevented from colliding with the slit portion of the loosely fitting support portion and the ball return preventing member from being detached from the support pin.
[0011]
The ball return prevention member constituting the ball return prevention device according to the present invention has a support pin that is the same as the play ball driven in a specific position in the vicinity of the outlet, and the loose-fitting support portion is placed sideways on the support pin. only fitting, it is possible to assemble with one touch, it improves the assembling workability. In addition, the component that substantially constitutes the ball return prevention device is only one component of the ball return prevention member in which the three parts of the loose fitting support portion, the blade plate portion, and the weight portion are integrally formed , The configuration is remarkably simple.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to examples. It should be noted that only the portions unique to the present invention will be described, avoiding duplication with the portions described in the section “Prior Art”. FIG. 1 is a front view of a pachinko machine equipped with the ball return prevention device S of the present invention, and FIG. 2 is a view of the ball return prevention device S showing a state in which the launch ball P ₁ is released from the outlet 2. FIG. 3 is an enlarged front view of the periphery, and FIG. 3 is an enlarged front view of the periphery of the ball return prevention device S showing a state in which the return ball P ₃ collides with the blade 12 of the ball return prevention member A to prevent the ball return. 4 is a perspective view showing the periphery of the ball return prevention device S, FIG. 5 is a perspective view of the ball return prevention member A and the support pin N ₁ into which the ball return prevention member A is fitted, and FIG. FIG. 7 is a perspective view of the ball return preventing member A as viewed from the outside, FIG. 7 is a side view of the state where the ball return preventing member A is fitted into the support pin N ₁ , and FIG. It is X-ray sectional drawing.
[0013]
As shown in FIG. 5 and FIG. 6, the ball return prevention member A is an integrally molded product of resin, and a loose fitting support having a cylindrical shape with a slit in a portion slightly lower than the central portion in the vertical direction. A plate-like vane plate portion 12 is provided above the loose fitting support portion 11, and a weight portion 14 is provided below the loose fitting support portion 11 via a connecting plate portion 13. It is the structure which was made. This ball return prevention member A is supported in a loosely fitted state on the support pin N ₁ driven into the game board 3 at the portion of the loosely fitting support portion 11. The support pin N ₁ of this embodiment is composed of the same nails as the innumerable game nails N ₂ to be driven into the play area of the game board 3 and is simultaneously driven when the innumerable play nails N ₂ are driven. As shown in FIGS. 2 and 3, the support pin N ₁ is driven into a portion of the game board 3 that has entered the game area slightly from the upper end of the inner rail R ₁ .
[0014]
The loosely fitting support portion 11 constituting the ball return preventing member A has a configuration in which a slit 11a along the axial direction is provided at a specific portion in the circumferential direction of the cylindrical body, and the inner diameter of the insertion hole 11b is said support pin N has become slightly larger than the outer diameter of _1, is fitted to the support pin N ₁ into the hole 11b the fitting該被, fitting the loosely fitting support portion 11 on the outside of the support pins N ₁ In this state, as shown in FIG. 8, a loose fit is formed in which a slight gap is formed between the fit-in hole 11 b and the support pin N ₁ . With this structure, the ball return prevention member A is easily rotated with respect to the support pin N ₁ (the rotation resistance is reduced). The width of the slit 11a provided in the loosely fitting the support portion 11 is not smaller than the outer diameter of the support pins N _1, after the loosely fitting the support portion 11 to the support pins N ₁ is fitted, exit There is no structure. In addition, the slit 11a, in a state where the ball return preventing member A to the support pins N ₁ is loosely fitted support is provided on the side which faces the inner rail R _1. This structure is returned ball P ₃ collides with the portion of the slit 11a of the loosely fit support portion 11, by the impact force, thereby preventing the ball return preventing member A is disengaged from the support pins N _1.
[0015]
As for the slats 12 and the weight portion 14, as shown in FIG. 7, any even within the range of the length of the loose-fit support portion 11, anti-member A return balls to the support pins N ₁ is The dimensions of the end faces of the blade board 12 and the weight part 14 on the side of the game board 3 are designed so as not to contact the game board 3 when loosely supported. Since the slat 12 is molded into a thin plate shape with resin, it has a predetermined elasticity and slightly elastically deforms when the launch ball P ₁ collides. Thereby, it is considered that the impingement force with the launch ball P ₁ is relaxed so that the blade 12 is not damaged by the collision with the fire ball P ₁ repeatedly received.
[0016]
Moreover, the weight part 14 is formed in the cross-sectional substantially triangular shape, By providing this weight part 14, the whole gravity center of the ball | bowl return prevention member A is from the axial center of the cylindrical loose-fit support part 11. Also located below the heel. The weight portion 14 has a function of maintaining the state in which the slat plate portion 12 enters the outlet 2 at the upper end of the ball passage 1 (the state shown in FIG. 3), and causes the slat plate portion 12 to launch the firing ball P _1. A function of instantaneously returning the entire ball return prevention member A, which has been rotated in the clockwise direction upon collision, to the original position (a position where the slat 12 can enter the opening 2 to prevent the ball return). Have 6 and 8, reference numeral 16 denotes a rib for reinforcing the blade 12.
[0017]
As shown in FIG. 3, in a state where the fired ball P ₁ does not collide with the blade plate 12, the blade plate 12 has entered the outlet 2, and the return ball P ₃ has passed from the outlet 2. The ball path 1 cannot be returned. That is, the minimum distance between the tip of the blade 12 and the outer rail R ₂ when the firing ball P ₁ is not colliding is about (2/3) of the diameter of the pachinko ball, and the return ball P ₃ is It is no longer possible to enter the ball passage 1 from the play area. Further, when the shot ball P ₁ collides with the slat 12 at the position indicated by a two-dot chain line in FIG. 2, the ball return preventing member A is rotated clockwise by the collision force, and its lower end portion. The weight portion 14 is in contact with the outer surface of the inner rail R ₁ , so that the rotation of the ball return preventing member A in the clockwise direction is restricted.
[0018]
Further, the ball return prevention device S of the present invention is such that the entire ball return prevention member A constituting the ball return prevention member A is exposed in the play area, so that the return ball P ₃ is the ball return prevention member A, particularly its weight portion. It is desirable to minimize the chance of hitting 14. Therefore, the arrangement of the game nail N ₂ with respect to the game board 3 is devised, and as shown in FIG. 3, a plurality of protections identical to the game nail N ₂ are provided on the side of the weight portion 14 of the ball return prevention member A. If the nail N ₃ is driven in, the return ball P ₃ can be prevented from colliding with the weight part 14 of the ball return preventing member A by the protective nail N ₃ as shown by a two-dot chain line in FIG. The original function of preventing ball return is ensured. This protective nail N ₃ is driven around an area where the return ball P ₃ arrives in a region around the ball return prevention device S and excluding the discharge passage of the shot ball P ₁ , and the return ball P ₃ is a ball. It is also effective to prevent the return preventing member A from colliding with the loosely fitting support portion 11 and the blade plate portion 12. In the example shown in FIG. 2, the two protective nails N ₃ are disposed in the radial direction of the inner and outer rails R ₁ and R ₂ on the side of the blade 12 at the original position of the ball return prevention member A. Has been driven along.
[0019]
Next, the operation of the ball return prevention device S according to the present invention will be described. The state indicated by the two-dot chain line in FIG. 2 is that the lower end portion of the connecting plate portion 15 connecting the blade plate portion 12 to the loosely fitting support portion 11 is the inner rail by the action of the weight portion 14 of the ball return preventing member A. In contact with the upper end of R ₁ , the entire blade plate portion 12 enters the outlet 2 at the upper end of the ball passage 1, and the ball return is prevented. The pachinko balls are fired one after another by the launching device of the pachinko machine, pass through the ball passage 1 while being guided to the outer rail R ₂ , and reach the outlet 2 at the upper end of the ball, the ball entering the part Colliding with the vane plate portion 12 of the return preventing member A, and by the collision force, the ball return preventing member A is rotated clockwise as shown by a solid line in FIG. By retreating from the mouth 2, the flying ball P ₂ is released to the play area of the game board 3. Immediately after the shot ball P ₁ is released from the outlet 2 into the play area, the ball return prevention member A rotated clockwise is instantaneously returned to the original position by the return action of the weight 14 at the lower end. Returned, fulfills the function of preventing ball return. In the same period as the pachinko ball firing cycle, the above action of the ball return preventing member A is continuously repeated to prevent the return ball P _{3 from} being released and returning to the ball passage 1 through the mouth 2. .
[0020]
Therefore, as shown in FIG. 3, even when the return ball P ₃ arrives at the portion of the discharge port 2 in the time zone when the discharge ball P ₁ is not discharged from the discharge port 2, It is reliably prevented from colliding with the slat 12 of the ball return preventing member A and returning to the ball passage 1.
[0021]
Further, regarding the ball return prevention member, a loosely fitted support portion loosely fitted to the support pin member, a blade plate portion provided above the loosely fitted support portion, and provided below the loosely fitted support portion. The structure of the embodiment is not limited as long as it has three parts including a weight part for maintaining the state where the blade plate part enters the outlet, and any structure is possible. Good. Further, with respect to the support pin member that is driven into the game board 3 in order to support the ball return prevention member A in a loosely fitted state, if a play nail is used as described above, it can be driven simultaneously when the play nail is driven. Thus, there is an advantage that the assembly workability as a whole of the pachinko machine is improved, but this support pin member is not limited to the play nail, and any member can be used as long as it can support the ball return prevention member A in a loosely fitted state. There may be.
[0022]
【The invention's effect】
Since this invention is the said structure, compared with the conventional ball return prevention apparatus, the original effect as described below is show | played. (1) Since the ball return preventing member can be fitted from the side to the same support pin as the game ball driven into the game board with one touch, the assembly workability of the ball return preventing device is improved. (2) Since the component parts of the ball return prevention device are only the ball return prevention member in which the three parts of the loose- fitting support portion, the blade plate portion, and the weight portion are integrally formed, except for the support pin , The overall configuration is extremely simple .
[Brief description of the drawings]
FIG. 1 is a front view of a pachinko machine equipped with a ball return prevention device S of the present invention.
FIG. 2 is an enlarged front view of the periphery of a ball return prevention device S showing a state in which a projecting ball P ₁ is released from an outlet 2;
FIG. 3 is an enlarged front view of the periphery of a ball return prevention device S showing a state in which the return ball P ₃ collides with the blade plate portion 12 of the ball return prevention member A to prevent the ball return.
4 is a perspective view showing the periphery of a ball return prevention device S. FIG.
FIG. 5 is a perspective view of a ball return prevention member A and a support pin N ₁ into which the ball return prevention member A is fitted.
FIG. 6 is a perspective view of a ball return preventing member A viewed from the outside.
FIG. 7 is a side view showing a state in which a ball return preventing member A is fitted into the support pin N ₁ .
8 is a cross-sectional view taken along line XX in FIG.
[Explanation of symbols]
A: Ball return prevention member
N ₁ : Support pin
N ₂ : Play nails
N ₃ : Protective nail
P ₁ : Launch ball
P _2: Fly Ball
P ₃ : Return ball
S: Ball return prevention device
R ₁ : Inner rail
R ₂ : Outer rail
1: Jade passage
2: Outlet
3: Play board
11: Free fitting support part
11a: slit
11b: Insertion hole
12: Blades
14: Weight part

Claims (1)

Between the outer rail R ₂ and the inner rail R ₁ attached to the play area of the game board 3, a ball passage 1 is formed that can pass the shot ball P ₁ launched from the launcher unit side. A ball return preventing member for preventing the flying ball P ₂ released to the play area from the outlet 2 opened at the upper end of the ball passage 1 from returning to the ball passage 1 as a return ball P _3. A is a ball return prevention device S that is rotatably mounted on and supported by a support pin N ₁ that is the same nail as the play nail N _{2 that} is driven into and fixed to the game board 3 in the vicinity of the outlet 2. And
The ball return prevention member A is an integrally molded product of synthetic resin, and is provided at a slightly lower portion than the central portion in the vertical direction, and can be rotated by being fitted sideways into the shaft portion of the support pin N _1. A cylindrical loose-fit support portion 11 with a slit that is loosely supported, a plate-like blade plate portion 12 that is provided above the loose-fit support portion 11 and can receive the flying ball P ₂ , and the idle A weight portion 14 provided via the connecting plate portion 13 is formed in series below the fitting support portion 11 and can be loosely fitted to the shaft portion of the support pin N ₁ on the loose fitting support portion 11. The insertion hole 11b penetrates and is formed along the axial length direction, and a slit 11a having an opening width narrower than the inner diameter of the insertion hole 11b is formed in the axial length direction. 11 is a state in which the slit 11a is used to elastically expand and contract in the inner and outer diameter directions. Is deformable to became configuration,
The ball return preventing member A, the slit 11a of the loosely fit support portion 11 toward the side opposite to said rail R _1, the loosely slit of the support portion 11 relative to the shaft portion of the support pins N ₁ by Komu fitted sideways combined 11a, and is loosely fitted supported loosely fit support portion 11 is elastically deformed, when non-transmission of firing ball P _1, the vane plate 12 is the by the weight portion 14 It is held with the outlet 2 closed,
Each time the fired ball P ₁ is released from the outlet 2 to the play area, it pushes open while rotating the ball return preventing member A in contact with the slat 12 of the ball return preventing member A. while being Hoteki into play area as flying ball P ₂ Te, when the flying ball P ₂ of the game area is back toward the Hoteki port 2 as the return ball P ₃ is said return Ri ball P ₃ The pachinko machine is configured so that it is brought into contact with the slat 12 in the state in which the air outlet 2 is closed and is rebounded inside the play area to prevent entry into the ball path 1 Ball return prevention device.

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