JP3386422B2 - Pachinko ball backflow prevention structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pachinko ball backflow prevention provided on a carrier pipe arranged to lift a pachinko ball from a ball hoisting device to an upper tank installed above on a pachinko machine installation island. Regarding the improvement of the structure.

[0002]

2. Description of the Related Art A game machine installation island in a pachinko hall is usually composed of an elongated section, and many pachinko machines are arranged back to back around them in an orderly manner. The pachinko balls discharged from each pachinko machine are collected, and then are pumped to an upper ball tank by an appropriate ball hoisting device, and are supplied to each pachinko machine again.

The present applicants have developed a circulation path on a pachinko machine installation island as shown in FIG. That is, the pachinko balls discharged from each pachinko machine 11 are collected in a pool tank (not shown), and the balls carried out from the pool tank in a fixed amount pass through a ball supply guide trough 12 whose bottom surface is formed like a cage. It is supplied to the polishing device 13. Here, the balls are the endless belt rotating mechanism 13a and the polishing cloth spreading mechanism 13
Rolled and polished between b and fed to the doffing device 14 on the right side. Here, the polished balls are sent to the upper ball tank 16 by the ball hoisting device 14 via the conveying pipe 15, and the respective devices are arranged so as to be supplied from the upper ball tank 16 to the respective pachinko machines.

The carrier pipe 15 for lifting the pachinko balls upward from the ball hoisting device 14 as described above is a first carrier pipe 15a directly connected to the ball hoisting device 14 as illustrated in FIG.
And a second transport pipe 15b connected to the first transport pipe 15a and extending toward the upper tank. In the carrier pipe 15 configured in this way, the doffing device 1
When the connection between the first transfer pipe 15a and the second transfer pipe 15b is released due to the necessity of maintenance of 4 or the transfer pipe 15 itself, the pachinko balls staying in the second transfer pipe 15b flow backward due to their own weight. As a result, the problem of scattering around occurs.

The applicant of the present invention has proposed a backflow preventer suitable for preventing such a backflow phenomenon in Japanese Patent Application No. 10-252.
No. 151 (Patent No. 2931304). In this backflow preventer, an inclined branch pipe is provided in the middle of the conveying pipe, a stopper ball is elastically projected from the branch pipe at this intersection, and when the pachinko ball flows upward, the stopper ball retracts, The movement of the balls is not obstructed, and the stopper balls move forward to prevent the movement of the balls when trying to flow backward. Although this mechanism has the advantage that it does not require power and always has a function of automatically preventing backflow, it has a problem of high manufacturing cost due to its slightly complicated and precise structure.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and does not add a complicated mechanism to a conventional transport pipe, but has a simple jig structure. A pachinko ball backflow prevention structure that is extremely inexpensive and has a reliable backflow prevention effect.

[0007]

SUMMARY OF THE INVENTION The above-mentioned problems are caused by a plurality of pachinko balls arranged in an upper tank installed above the ball-lifting device while lifting the pachinko balls upward in a single row. Each of the same number of second transport pipes connected to the upper portion of the first transport pipe is provided with a pin insertion hole penetratingly aligned at right angles to the longitudinal direction, and a stopper pin is inserted to prevent the pachinko balls from moving. In the pachinko ball backflow prevention structure, the stopper pin is provided on the surface of the plate-like stopper fitting,
The plate-like stopper metal fittings are provided with bent pieces that are aligned so that they can be inserted into the pin insertion holes at intervals so that both ends of the second carrier pipe can be sandwiched between the bent pieces.
The problem can be solved by the pachinko ball backflow prevention structure of the present invention, characterized in that the bent piece is provided with means for making the plate-like stopper fitting detachable.

The present invention can be embodied as a pachinko ball backflow prevention structure in each of the following forms. (1) The detachable means connects the bent pieces of the plate-shaped stopper metal fitting with elongated metal fittings in a state where the plate-shaped stopper metal fitting is attached to the second conveying pipe, and the plate-shaped stopper metal fitting is detached. And the plate-shaped stopper metal fittings can be removed by disconnecting the elongated metal fittings. (2) The detachable means elastically biases the bent piece inward with the plate-shaped stopper metal fitting attached to the second transport pipe, and the second end is bent at the second end. A form in which the plate-shaped stopper metal fitting is prevented from coming off by elastically clamping it while the carrier pipe is locked, and the plate-shaped stopper metal fitting can be removed by pulling it out to the front.

(3) In each invention described in the preceding paragraph,
The pin insertion holes provided in each of the second carrier pipes are
A form in which the carrier tube is provided in a long hole shape having a length larger than the radius of the pachinko ball along the longitudinal direction. (4) In each invention described in the preceding paragraph, the pin insertion holes provided in each of the second transport pipes are transparently provided along the longitudinal direction of the transport pipe at a pitch smaller than the radius of the pachinko balls. A form having a plurality of circular holes. (5) In each of the above-mentioned inventions, the second carrier pipe is formed of a square pipe, and the pin insertion holes provided in each of the second carrier pipes are provided so as to be offset from the axis of the carrier pipe. .

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of a pachinko ball backflow prevention structure of the present invention will be described with reference to FIGS. First, the pachinko ball backflow prevention structure of the present invention is, as illustrated in FIGS.
4, the same number of second transports connected to the upper portions of the plurality of first transport pipes 15a, which are arranged to lift the pachinko balls in one row while pushing them upward in the upper tank 16 installed above As shown in FIG. 2, the pipe 15b is intended for each of the second carrier pipes 15b, and the pin insertion holes 3a, 3b, 3c are aligned at right angles to the longitudinal direction.
(FIG. 2 illustrates five second carrier pipes and five pin insertion holes), and inserts elongated stopper-like stopper pins 41a, 41b, 41c to the inside of the pipe. It is premised on a structure that prevents the movement of the pachinko balls by projecting to the inside.

The feature of the present invention is that, as shown in FIG. 1, stopper pins 41a, 41b, 41c are provided.
On the surface of the plate-like stopper fitting 4, the pin insertion hole 3
A bent piece 42 is formed so as to be aligned and projected so as to be insertable into a, 3b, and 3c, and both end portions of the plate-like stopper fitting 4 can sandwich both side portions of the second transport pipe.
a and 42b are provided, and the bent pieces 42a and 42b are provided with means for detachably attaching the plate-shaped stopper fitting 4. For example, as the detachable means, as shown in FIG. 2, in the state where the plate-shaped stopper metal fitting 4 is attached to the second conveying pipe 15b, the tip end portions of the bent pieces 42a and 42b of the plate-shaped stopper metal fitting 4 are attached. Locking groove 43a of
43b between the engaging grooves 51 at both ends of the elongated connecting fitting 5
It is possible to apply a structure in which the plate-shaped stopper metal fitting 4 is detachable by connecting with a and 51b to prevent the plate-shaped stopper metal fitting 4 from falling off, and the elongated connecting metal fitting 5 is disconnected.

As the detachable means, as shown in FIG.
What is shown by -5 can be applied. That is, as the detachable means, the stopper pins 41a, 41b, 41c to the plate-like stopper metal fittings 4 are attached to the plate-shaped stopper metal fittings 4 with the plate-shaped stopper metal fittings 4 attached to the second conveying pipes 15b, 15b and 15b.
On the surface of the pin insertion holes 3a, 3b, 3c and so as to be aligned with intervals so that they can be inserted into the pin insertion holes 3a, 3b, 3c. Providable bending pieces 44a, 44b are provided, the bending pieces 44a, 44b are elastically biased inward, and are locked to both sides of the second transport pipe by the inwardly bent tip portions 45a, 45b. It has a structure in which the plate-shaped stopper metal fitting 4 is prevented from falling off by elastically sandwiching it, and is removable by pulling out the plate-shaped stopper metal fitting 4 toward you.

As shown in FIG. 4, if the plate-like stopper fitting 4 having the bent pieces 44a and 44b is pushed into the second conveying pipes 15b, 15b and 15b to be mounted as shown in FIG. With the stopper pins 41a, 41b, 41c-provided on the plate-shaped stopper fitting 4 inserted in the respective pin insertion holes 3a, 3b, 3c-of the second carrier pipe, the bent pieces 44a, 44b are provided inside. It is elastically biased to and is fixed to the second transfer pipes 15, 15, 15 to 15. If necessary, it can be pulled out and easily removed.

Thus, as shown in FIGS. 2 and 5,
By simply mounting the plate-shaped stopper metal fittings 4 on the second transfer pipes 15, 15, 15 to the stopper pins 41 in the passages of the respective transfer pipes.
It is possible to set a, 41b, 41c to project so that balls cannot pass through. Thus, according to the present invention, it is possible to prevent the backflow of the pachinko balls by a one-touch operation for a plurality of transport pipes as illustrated.

Next, a preferred embodiment of the pin insertion hole provided in the carrier pipe will be described. (1) As illustrated in FIG. 6, the pin insertion hole 3 provided in each of the second transfer pipes 15b is formed in the transfer pipe 15b.
It can be embodied in the form of a long hole having a length larger than the radius of the pachinko balls T along the longitudinal direction of b.

In this case, since the stopper pin 41 can be inserted into the carrier tube 15b at a position where the center of the pachinko ball T is removed, it is possible to avoid the inconvenience of hitting the center of the pachinko ball T and making it difficult to insert. it can. In FIG. 6, the carrier pipe is shown as a circular pipe, but it can be embodied as a rectangular pipe as shown in FIG. Also in this case, the pin insertion hole 3 having the long hole shape is formed.
Since the stopper pin can be inserted into the suitable insertion range x including the boundary between the two pachinko balls, the plate-shaped stopper fitting can be easily attached.

(2) As illustrated in FIG. 7, the pin insertion holes 3 provided in each of the second transport pipes 15b have a pitch smaller than the radius of the pachinko balls T along the longitudinal direction of the transport pipe. A plurality of circular holes 31, 32
It can be embodied in the form of 33. Also in this case, for example, as shown in FIG. 7C, it is difficult to insert the stopper pin into the circular hole 32, but the stopper pin 41 can be inserted into the circular hole 31 or 33. It is possible to avoid the inconvenience that it happens to hit the center of the pachinko ball T and it becomes difficult to insert it.

(3) As illustrated in FIG. 9, the second carrier pipe 15b is formed of a square pipe, and the pin insertion holes 3 provided in each of the second carrier pipes 15b are eccentric from the axis of the carrier pipe and are transparent. It can be embodied in the form in which it is provided. In the case of FIG. 9, the pin insertion hole 3 is formed in contact with the inner wall of the carrier tube. In this configuration, the stopper pin is not inserted into the pachinko ball T toward the center, and the preferable insertion range y including the boundary between the two pachinko balls can be seen through the elongated pin insertion hole 3. Since the width is relatively wide, the stopper pin can always be easily inserted, and the advantage of the present invention that the backflow can be prevented with one touch is further utilized.

[0019]

Since the pachinko ball backflow prevention structure of the present invention is constructed as described above, it does not add a complicated mechanism to the conventional transport pipe, but has a simple jig construction. Therefore, it is possible to provide an extremely inexpensive structure, and it is possible to provide a reliable structure for preventing the backflow of pachinko balls that can be operated with one touch. Therefore, the present invention, as a pachinko ball backflow prevention structure that solves the conventional problems,
Its industrial value is extremely high.

[Brief description of drawings]

FIG. 1 is a perspective view of a plate-shaped stopper fitting for explaining an embodiment of the present invention.

FIG. 2 is an explanatory view of mounting the plate-like stopper metal fitting of FIG.

FIG. 3 is a perspective view of a plate-shaped stopper fitting for explaining another embodiment.

FIG. 4 is an explanatory view of mounting the plate-shaped stopper metal fitting of FIG. 3.

FIG. 5 Same as above.

FIG. 6 is a front view (A) and a sectional view (A ′) (B) showing the form of a pin insertion hole.

FIG. 7 is a front view (A) similarly showing the form of the pin insertion hole.
Sectional views (A ') (B) (C).

FIG. 8 is a front view (A) showing a form of a pin insertion hole,
Sectional views (A ') (B) (C).

FIG. 9 is a front view (A) showing a form of a pin insertion hole,
Sectional views (A ') (B) (C).

FIG. 10 is a layout view of main parts for explaining a ball circulation path on an island where a pachinko machine is installed.

FIG. 11 is a main part layout view showing the layout of a doffing device and a transport pipe.

[Explanation of symbols]

14 doffing device, 15a first carrier pipe, 15b second
Conveyor pipe, 16 Upper tank, 3, 3a, 3b, 3c Pin insertion hole, 4 Plate stopper metal fittings, 41, 41a, 41
b, 41c Stopper pin, 42a, 42b Bending piece, 43a, 43b Locking groove, 5 Elongated connecting metal fitting, 51
a, 51b Locking groove, x, y Suitable insertion position.

Claims (6)

(57) [Claims] 1. An upper tank installed above the ball hoisting device, which is connected to the upper parts of a plurality of first carrier pipes arranged to lift and lift pachinko balls in a single row while pushing them upward. Each of the same number of second transport pipes has a pinch hole that is aligned at right angles to the longitudinal direction and has a pin insertion hole, and a stopper pin is inserted to prevent the pachinko ball from moving backwards. The stopper pins are provided on the surface of the plate-like stopper metal fitting so as to be aligned at intervals so that they can be inserted into the pin insertion holes, and at both ends of the plate-like stopper metal fitting, A pachinko ball backflow prevention structure characterized in that a bending piece capable of sandwiching both sides is provided, and a means for detachably attaching the plate-like stopper fitting to the bending piece is provided. 2. A plate-shaped stopper metal fitting, wherein the detachable means connects the bent pieces of the plate-shaped stopper metal fitting with an elongated metal fitting in a state where the plate-shaped stopper metal fitting is mounted on the second conveying pipe. 2. The pachinko ball backflow prevention structure according to claim 1, wherein the plate-shaped stopper metal fitting can be removed by preventing the falling of the metal fitting, and by removing the connection of the elongated metal fitting. 3. The detachable means elastically biases the bent piece inward with the plate-like stopper metal fitting attached to the second transport pipe, and a tip portion bent inwardly. The second transport pipe is locked and elastically clamped to prevent the plate-shaped stopper fitting from falling off, and the plate-shaped stopper fitting can be removed by pulling it toward you. Pachinko ball backflow prevention structure described. 4. The pin insertion hole provided in each of the second carrier pipes is formed in a long hole shape having a length larger than the radius of a pachinko ball along the longitudinal direction of the carrier pipe. The pachinko ball backflow prevention structure according to claim 1, 2 or 3. 5. The pin insertion holes provided in each of the second transfer pipes are a plurality of circular holes formed along the longitudinal direction of the transfer pipe at a pitch smaller than the radius of the pachinko balls. The pachinko ball backflow prevention structure according to claim 1, 2 or 3. 6. The first conveying pipe is formed of a square pipe, and the pin insertion holes provided in each of the second conveying pipes are provided so as to be offset from the axial center of the conveying pipe. The pachinko ball backflow prevention structure according to any one of 1.