JPH09266973A - Sealed structure of printed circuit board housing box in pachinko machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely sealing a printed circuit board housing box, by thermally caulking the tip part of a resin member bridged between covering and fixing cases in a case, drawn out from an opening formed on the case. SOLUTION: This printed circuit board housing box 21 is composed of a fixing side case 23 and a covering side case 24, protruding pieces 33 and 34 are formed on the fixing side case 23, and an engaging hole 33a is formed on the covering side case 24. Besides, notch parts 35 and 36 are formed corresponding to the protruding piece 33 and 34 onto the covering side case 24. A regulating piece 51 is formed extended on a sealing board 40 to be attached to the back face of the covering side case 24, and an engaging protrusion part is formed on the regulating piece 51. Thereby, when the covering side case 24 is assembled on to the fixing side case 23, the engaging protrusion part formed on the covering side case 24 protrudes outside the box 21 via the engaging hole 33a formed on the fixing side case 23. Thus, when the protrusion part is thermally caulked, the printed circuit housing box is sealed never to be opened unless the regulating piece 51 is cut or something.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing structure for a substrate storage box in a pachinko machine.

[0002]

2. Description of the Related Art Some pachinko machines are jackpots when a symbol variably displayed on a variable display device stops at a predetermined symbol. Such a pachinko machine is usually provided with a circuit board including a CPU or the like for controlling the variable display device. The circuit board is housed in a board housing box mounted on the back surface of the game board.
The substrate storage box is composed of a fixed side case and a covering side case that is covered with the fixed side case. However, it is required that the opening of the case be closely monitored so as to prevent unauthorized modification. Therefore, conventionally, a sealing paper has been attached to the mating surfaces of both cases.

[0003]

However, it is not possible to completely deny the possibility that even a sealing sheet may be peeled as it is without being broken. In the past, the only proof of sealing was whether or not the sealing paper was cut, and in the unlikely event that the sealing paper was skillfully peeled off, it was immediately exposed to the danger of unauthorized modification. . Therefore,
There was a need for more means of achieving the integrity of the seal. The present invention has been devised and devised in view of the above-mentioned conventional problems, and an object thereof is to provide a sealing structure capable of performing reliable sealing.

[0004]

The invention according to claim 1 for achieving the above object is a fixed side case for fixing a circuit board for controlling a game operation, and a covering side matching with the fixed side case. A structure for sealing and housing the circuit boards in both cases by a case and a resin member between the covering side case and the fixed side case in a space where the circuit boards are housed. And the ends are pulled out from an opening formed on at least one side of the two cases, and the ends are heat-crimped to seal the two cases. is there.

[0005]

According to the first aspect of the invention, the resin member is bridged in the case between the covering side and the fixed side, and the tip of the resin member is pulled out from the opening formed in the case. Since it is caulked with heat, even if you try to open the case as it is, the resin member resists this,
Therefore, the sealed condition of the case is maintained. That is, since the case cannot be opened unless the heat-crimped portion is broken or cut, it becomes clear that the seal is released by the traces of the breakage or the like.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] A first embodiment embodying a sealing structure for a substrate storage box in a pachinko machine according to the present invention will be described below with reference to FIGS. <Outline of Pachinko Machine> First, an outline of the pachinko machine will be briefly described. In FIG. 10 showing the front of the pachinko machine, a front frame 11 of the pachinko machine formed in a frame shape is
The metal frame 12 is fitted, and the lower opening portion of the opening of the metal frame 12 is closed by the front plate 13. The front plate 13 is provided with an upper tray 14 for storing hit balls and supplying the hit balls to a hit ball launching device (not shown). Further, the window frame 15 is fitted into the upper opening portion of the opening of the metal frame 12, and the transparent plate glass 16 is inserted therein.
Is fitted. Further, in the lower portion of the front plate 13 of the front frame 11, a lower tray 17 for storing prize balls and a handle 18 for operating a ball striking device are provided.

On the back side of the front frame 11, a game board 19 shown in FIG. 9 is mounted. As a result, a game area is formed in the window frame 15. That is, various winning ball receiving devices, a variable display device, a decorative lamp, and the like are arranged on the front surface of the game board 19. Also, game board 1
On the back side of 9, there is a prize ball cover 20 attached,
A substrate storage box 21 having the sealing structure of the present invention therein
Is attached. The control circuit board 22 for the variable display device or the like is sealed therein with a sealing structure so as not to be tampered with.

<Structure of Substrate Storage Box> As shown in FIG. 1, the substrate storage box 21 is composed of a fixed side case 23 for fixing the circuit board 22 and a covering side case 24 for covering the circuit board 22. It Fixed case 23
As shown in FIG. 2, is made of a rectangular metal steel plate, and boss portions 25 (made of metal) are provided upright at its four corners. A screw hole is formed in each boss portion 25, and a screw 26 (made of metal) can be fastened therein. One long side portion (edge portion on the front side in FIG. 2) of the fixed side case 23 is slightly bent upward, and a board holding portion 28 is formed at a substantially central portion of the bent wall 27. Has been done. The board holding portion 28 is composed of a pair of board receiving portions 29, 29 and a board holding portion 30 arranged between the board receiving portions 29, 29. The board receiving portion 29 projects a predetermined portion of the bending wall 27 slightly upward, It is formed by being bent inward. Similarly to the substrate receiving portion 29, the substrate pressing portion 30 is also formed by projecting a part of the bending wall 27 and then bending it inward.
It is projected slightly higher than the board receiving portion 29. The edge of the circuit board 22 can be inserted and held with the difference in the projecting height between the board receiving portion 29 and the board pressing portion 30. Further, the long side portion (the rear side edge portion in FIG. 2) on the opposite side is also slightly bent upward, and a slender hook is provided on the portion from the bent wall 31 to the bottom plate 46. Four holes 32 are formed at appropriate intervals.

On the other hand, as shown in FIG. 3, the cover-side case 24 is formed by bending the peripheral edge of a rectangular steel plate downward. The dimension of the long side of the covering side case 24 is equal to the dimension of the corresponding side of the fixed side case 23, and the dimension of the short side is shorter than the corresponding side of the fixed side case 23. Further, both front and rear walls (right side and left side in FIG. 3) of the covering side case 24 project until the front edge in the figure becomes equal to the lateral width dimension of the fixed side case 23, and projecting pieces 24a, 24a. Are formed. Further, at the lower edge of the side wall of the covering side case 24 on the front side in the drawing, mounting pieces 37, 37 are formed by bending inside the both protruding pieces 24a. The attachment piece 3
7 are formed with mounting holes 37a, and the mounting holes 3a
The position of 7a is set on both boss portions 25 on one side (left side in FIG. 7) of the fixed side case 23 in a state where the covered side case 24 is covered with the fixed side case 23 (state shown in FIG. 7) as described later. The positions are aligned with each other. In addition, in the side wall (the front side wall in FIG. 4) opposite to the side where the mounting piece 37 is provided in the covering side case 24, four pieces are provided at the lower edge portion (upper edge portion in FIG. 4) thereof. The hooking pieces 38 are arranged at intervals corresponding to the hooking holes 32. This hooking piece 38 is formed by bending the lower edge portion of the side wall inward, and has a posture in which the covering side case 24 is opened approximately 90 degrees with respect to the fixed side case 23 (the posture shown in FIG. 6).
Then, it is fitted into the hooking hole 32 of the fixed case 23 from below. Further, thereafter, it is possible to rotate the covering side case 24 in the direction of covering the fixed side case 23 (the arrow direction in FIG. 6) with the hooking piece 38 engaged with the hooking hole 32. Has become.

Further, on the upper surface of the covering side case 24,
As shown in FIG. 3, a large rectangular window hole 39 is centered, and a plurality of slits 43 and the like are opened around the window hole 39.
On the other hand, a plastic closing plate 40 is attached to the back surface of the covering side case 24 so as to close each opening. However, the closing plate 40 is transparent so that the inside of the case can be seen through each opening. More specifically, closing the window 39 with the transparent closing plate 40 is the circuit board 2 housed in the board housing box 21.
This is so that the model number (for example, serial number or version number) of the ROM (read-only memory) mounted on the device 2 can be confirmed through the window hole 39. Further, a plurality of slits 48 are also formed on the long side wall of the covering-side case 24, but these slits function as heat dissipation holes, so these are not closed by the closing plate 40. A pair of lock receiving portions 41 for attaching the closing plate 40 are provided on the left and right inner wall surfaces of the covering-side case 24, respectively, and are formed by cutting and raising them inward.

On the other hand, the closing plate 40 has a size enough to cover the back side of the upper wall surface of the covering-side case 24, and has a side edge shape that fits the R portion extending to the wall surface on the long side. ing. Further, locking piece portions 42 are formed on both left and right edges of the closing plate 40 so as to correspond to the locking receiving portions 41. Then, the window hole 3 is formed on the back surface side of the covering side case 24.
9. When the closing plates 40 are overlapped so as to close the slits 43 and the like, the respective locking piece portions 42 engage with the locking receiving portions 41, whereby the closing plate 40 is held in a state of closing the window holes 39 and the like. (See FIG. 5).

A circular through hole 44 is formed at one corner (upper left in FIG. 3) on the upper surface of the covering side case 24, and similarly, the closing plate 40 is also positioned at a position aligned with the through hole 44. A through hole 45 is formed. And each through hole 4
A key switch 50 (see FIG. 7) can be attached to the covering-side case 24 by using 4, 45.
The key switch 50 can be operated from outside the box 21 with the circuit board 22 housed in the board housing box 21, and by operating this, for example, the probability of a big hit can be changed. Further, a plurality of small holes 49 are formed in the closing plate 40 at positions aligned with the slits 43, and by aligning with the slits 43, they function as heat dissipation holes like the slit 48.

<Sealing Structure> Next, the sealing structure will be described. That is, projecting pieces 33 and 34 are bent upward at the central portion of the bending wall 31 of the fixed side case 23 and the central portion of one short side (right edge in FIG. 2) of the fixed side case 23, respectively. Has been formed. The protruding piece 33 protrudes higher than the bent wall 31, and a locking hole 33a formed in the shape of a long hole is bored at a substantially central portion thereof. Further, in the central portion of the side wall (front side wall in FIG. 4) opposite to the side where the mounting piece 37 is provided in the covering side case 24 and one short side part (right edge part in FIG. 4). Are formed with notches 35 and 36 corresponding to the protrusions 33 and 34, respectively. Then, when the covering-side case 24 is closed, the protruding pieces 3 formed in the fixed-side case 23 in the notches 35 and 36 thereof.
The reference numerals 3 and 34 are flush with each other and are aligned with each other.

Further, as shown in FIG. 11, a closing plate 40
One long side portion (the cutout portion 35 in the covering side case 24)
A regulation piece 51 is formed so as to extend downward and to be flexibly deformable in the central portion of the side that is aligned with the side on which is formed. A locking projection 51a is formed on the outer surface of the central portion of the lower end portion of the restriction piece 51, the locking projection 51a being substantially fit and fit into the locking hole 33a. The position of the locking projection 51a is a position which is arranged in the substantially central portion of the cutout portion 35 when the closing plate 40 is attached to the back surface of the covering side case 24,
The position is such that when the covering-side case 24 is closed, it fits into the locking hole 33a that is formed in the protruding piece 33 of the fixed-side case 23. Further, the projecting size of the locking projection 51a is set so that the tip slightly projects from the outer surface of the projecting piece 33 in a state of being fitted into the locking hole 33a, and the projecting part can be heat caulked. You can do it.

The circuit board 22 has a fixed case 23.
It has a slightly smaller square shape, and its four corners are
A fixing hole 22a is formed at a position corresponding to the boss portion 25. Printed wiring is provided on the circuit board 22, and a plurality of electric components such as CPU and ROM are soldered. Although not shown, lands forming the ground of the circuit are formed around each fixing hole 22a.

<Operation of First Embodiment> A procedure for housing and sealing the circuit board 22 in the board housing box 21 will be described. First, the circuit board 22 is fixed to the fixed case 2
3, the edge portion (left edge portion in FIG. 6) of the circuit board 22 is held by the board holding portion 28 and one side (in FIG. 6,
The fixing hole 22a (on the right side) is screwed to the boss portion 25. Further, in this state, the covering side case 24 is fixed to the fixed side case 2.
The case 2 that is open 90 degrees relative to
The hooking piece 38 of No. 4 to the hooking hole 3 of the fixed side case 23.
Insert it into 2 from below. (See FIGS. 1 and 6). Then, with the hooking piece 38 engaged with the hooking hole 32, the covering-side case 24 is rotated in the direction in which it is put on the fixed-side case 23 (the direction indicated by the arrow in FIGS. 1 and 6).

At this time, the restricting piece 51 is curved inward with the finger from the outside of the covering side case 24 through the notch 35 (see FIG. 12), and the covering side case 24 is rotated in the closing direction. The fixed side case 23 is inserted inside the protruding piece 33 (see FIG. 13). Then, the covering side case 2
4, the curved restricting piece 51 is gradually returned to its original state by the elastic force, and the locking projection 51a is protruded.
It moves over the upper edge part and moves inside the protruding piece 33. Then, when the covering-side case 24 is in a regular closed state with respect to the fixed-side case 23, the restricting piece 51 overlaps the inner side surface of the projecting piece 33, and the locking projection 51 a is the locking hole 33 of the projecting piece 33.
Insert into a. As a result, the locking protrusion 51 a provided on the covering side case 24 side is locked by the locking hole 33 of the fixed side case 23.
The tip thereof projects out of the substrate storage box 21 via a.

Then, the screw 26 is inserted into the mounting hole 37a and the fixing hole 22a, and the cover side case 24 and the circuit board 22 are inserted.
The other side of is fastened together with the boss portion 25, and the portion of the locking protrusion 51a protruding outside the substrate storage box 21 is caulked with heat (see FIG. 14). Further, the sealing paper 47 is attached so as to straddle the matching surface between the protruding piece 34 and the cutout portion 36, and the sealing paper 47 is also partially covered by heat with the matching surface between the protruding piece 33 and the cutout portion 35. Affix it so that it is in a closed state (see FIG. 15). As a result, the circuit board 2
2 is housed in the board housing box 21 and has a restricting piece 51.
And, it is sealed with the sealing paper 47.

<Effects of First Embodiment> As described above, in this embodiment, the restriction piece 51 is bridged from the covering side case 24 to the fixed side case 23 in the substrate storage box 21,
Also, the locking hole 3 whose tip is formed in the fixed case 23
Even if the board storage box 21 is to be opened as it is because it is protruded from 3a and further caulked by heat, the regulation piece 51 resists this and opens it unless the heat-crimped portion of the regulation piece 51 is destroyed or cut. I can't. Therefore, the sealed condition of the substrate storage box 21 is reliably maintained. Further, when the heat-crimped portion is destroyed or cut, it becomes clear that the seal is released by the traces of the destruction or the like. Further, a sealing paper 47 is attached to the matching surface between the fixed-side case 23 and the covering-side case 24, and in particular, one sealing paper 47 is attached so as to cover a part of the heat-crimped portion. Since the sealing paper 47 must be peeled off to destroy the heat-crimped portion, the sealing has a double structure, and the substrate storage box 21
Is more reliably prevented from being opened illegally.

[Second Embodiment] A second embodiment embodying the sealing structure of the substrate storage box in the pachinko machine of the present invention will be described below with reference to FIGS. 16 to 19. In the first embodiment described above, the restriction piece 5 in the sealing structure is used.
Although the locking protrusion 51a formed on the No. 1 is a mere protrusion, the notch is formed in the locking protrusion 61 in the present embodiment. Since the other components are the same as those in the first embodiment, the same parts are designated by the same reference numerals and the description thereof will be omitted.

That is, as shown in FIG. 16, the locking projection 6 is formed on the outer surface of the lower end portion of the restriction piece 51 as in the first embodiment.
1 is formed, and the locking protrusion 61 has a cylindrical shape. Further, as shown in FIG. 17, the protruding piece 33 of the fixed side case 23 is formed with a locking hole 33a corresponding to the locking projection 61, and the locking hole 33a is formed in the locking projection 6a.
The shape is set to be slightly larger than the shape of 1, and the locking projection 61 can be fitted therein. In addition, the projecting size of the locking projection 61 is set such that the tip of the locking projection 61 slightly projects from the locking hole 33a when fitted into the locking hole 33a. I am able to crimp. Further, a cross-shaped notch 62 is formed on the protruding surface of the locking protrusion 61, and the depth thereof reaches the portion reaching the surface of the restriction piece 51. As a result, the locking protrusion 61 is divided into four protrusions 63 having the same shape.

In the present embodiment as well, when the covering side case 24 is attached to the fixed side case 23 as in the first embodiment, the restricting piece 51 is bent and deformed so as to enter the inside of the protruding piece 33 of the fixed side case 23. . Then, the locking protrusion 61
Is fitted into the locking hole 33a as the fixed side case 23 and the covering side case 24 are brought into the regular closed state (see FIG. 17). After that, the portion projecting from the locking hole 33a is heat-crimped, but in the present embodiment, the tip of the heat-crimping jig 64 is substantially the center of the projecting surface of the locking projection 61, that is, the notch 62. Press on the center (see Figure 18). Then, the tip of the heat caulking jig 64 is cut into the cut portion 6
When the protrusions 63 are cut into the inside of the groove 2, the divided protrusions 63 are crushed so as to be opened, and are evenly spread over the opening peripheral edge of the locking hole 33a to be in a crimped state. Further, thereafter, a sealing paper 65 is attached so as to cover a part of the heat-crimped portion on the matching surface between the cutout portion 35 of the covering-side case 24 and the protruding piece 33 of the fixed-side case 23 (see FIG. 19).

By the way, in the case where the locking projection is not formed with a notch as in the present embodiment and is simply formed in the shape of a rod shaft, even if the locking projection is crushed while applying heat, the crushing direction, etc. It is not easy to crush and deform the locking hole with a uniform width due to variations in work. As a result, the caulking is often performed in a state of being biased to one side around the locking hole. On the other hand, in the case where the locking projection 61 is provided with a notch as in the present embodiment, when the crushing operation by the heat caulking jig 64 is performed, the four projecting pieces 63 are respectively tilted in the radial direction. However, since it is subjected to the crushing action, uneven distribution of the caulking portion is avoided and the caulking around the locking hole 33a becomes uniform. Therefore, in the case of the present embodiment, the heat staking is more reliable than in the case where the locking projection 61 is formed in a simple rod shaft shape as described above.

[Third Embodiment] A third embodiment embodying the sealing structure of the substrate storage box in the pachinko machine of the present invention will be described below with reference to FIGS. In the first embodiment, the sealing structure is the fixed side case 2
Projecting piece 3 projecting substantially in the center of the bent wall 31 in FIG.
Although it is configured by engaging the restricting piece 51 with respect to No. 3, in the present embodiment, it is configured by engaging the restricting piece 71 with the protruding piece 34 that protrudes to the short side portion of the fixed side case 23. Since the other components are the same as those in the first embodiment, the same parts are designated by the same reference numerals and the description thereof will be omitted.

That is, as shown in FIG. 20, a restricting piece 71 is formed so as to extend downward and to be flexibly deformable at a substantially central portion of one short side portion of the closing plate 40, and the lower end portion thereof is shown in FIG.
As shown in FIG. 1, it reaches the inside of the notch 36 of the covering side case 24. Further, a rectangular parallelepiped locking projection 72 is formed on the outer surface of the lower end of the restriction piece 71. The lower end of the locking projection 72 is notched in a taper shape and serves as a guide portion 72a for fitting into the locking hole 34a described below. On the other hand, in the projecting piece 34 projecting to one short side portion of the fixed side case 23, a locking hole 34a corresponding to the locking projecting portion 72 is formed at substantially the center thereof, and its size is It is formed slightly larger than the shape of the locking projection 72, and the locking projection 72 can be fitted therein. Also, the locking protrusion 72
The projecting dimension of is set to a dimension that slightly projects when fitted in the locking hole 34a, and the part that projects in the fitted state can be heat caulked.

Now, in the present embodiment, the covering side case 24
Is engaged with the fixed case 23 in an attitude of being opened approximately 90 degrees, and then the covered case 24 is rotated as it is in the closing direction (the arrow direction in FIG. 21) with respect to the fixed case 23. Then, as the covering-side case 24 is closed, the guide portion 72a of the locking projection 72 is pressed by the tip of the projecting piece 34, the restricting piece 71 bends inward, and the covering-side case 24 is removed. When the lid is in the normal closed state, the locking hole 3 of the protruding piece 34
The locking projection 72 is fitted into the 4a from the inside (see FIG. 22). Then, after that, a heat-crimping jig is pressed against the portion protruding from the locking hole 34a to heat-crimp, and a sealing sheet is formed so as to cover a part of the heat-crimped portion on the matching surface between the protruding piece 34 and the notch 36. 73 may be pasted (Fig. 2
2). As a result, the substrate storage box is sealed.

Therefore, in this embodiment, the fixed case 2
When the cover 3 is closed by the cover-side case 24, it is not necessary to force the control piece 71 to bend with a finger or the like, so the sealing operation is very easy. Note that, also in this embodiment,
If the notch as shown in the second embodiment is formed in the locking protrusion 72, the effect of certainty of heat staking is naturally obtained as in the second embodiment.

[Fourth Embodiment] A fourth embodiment, which embodies the sealing structure of the substrate storage box in the pachinko machine of the present invention, will be described below with reference to FIG. Instead of the form of the locking hole 33a in the first embodiment, it may be formed by cutting out as shown in FIG. That is, the cutout groove 81 is formed downward from the substantially central portion of the upper edge portion of the projecting piece 33, and the lower end portion thereof is cut out to a depth approximately in the middle of the projecting piece 33. Further, the opening edge portion of the cutout groove 81 is notched in a tapered shape to form a guide portion 81a, and the locking protrusion 51 is formed.
It is easy to fit a into the notch groove 81. Since the other components are the same as those in the first embodiment, the same parts are designated by the same reference numerals and the description thereof will be omitted.

As a result, when the covering-side case 24 is attached to the fixed-side case 23, the locking projection 51a has the protruding piece 3a.
After being engaged with the distal end of the groove 3, the groove 23 is guided into the cutout groove 81 and moves along the cutout groove 81 to almost the center of the projecting piece 33 as the cases 23 and 24 are closed. .
Therefore, unlike the first embodiment, when the locking projection 51a is fitted into the locking hole 33a, it is not necessary to force the tip of the projecting piece 33 to pass over, so that the sealing work can be performed smoothly. Furthermore, since the locking projection 51a is not pressed by the projecting piece 33 and the restricting piece 51 is largely bent and deformed, the damage of the restricting piece 51, the deformation of the projecting piece 33, and the like can be prevented. Of course, the invention of this embodiment can be applied to the second and third embodiments, and in particular, when applied to the third embodiment, the guide portion 72a of the locking projection 72 is unnecessary. You can

[Fifth Embodiment] A fifth embodiment embodying the sealing structure of the substrate storage box in the pachinko machine of the present invention will be described below with reference to FIGS. 24 and 25. As shown in FIG. 3, the restriction piece 5 in the first embodiment.
1 was formed by directly extending the curved lower side edge of the closing plate 40 downward. That is, the restriction piece 51 extends to the cutout portion 35 along the inner wall surface of the covering side case 24 after the side edge portion on the long side of the closing plate 40 is curved in conformity with the R portion of the covering side case 24. Has been formed. Therefore, in the first embodiment, the covering side case 2
4 and the fixed side case 23 are in the regular closed state,
As shown in FIG. 14, the restriction piece 51 is a protruding piece 33 of the fixed side case 23 that is aligned with the cutout portion 35 from the covering side case 24.
Extending in close contact with both inner wall surfaces, and the regulating piece 5
The locking protrusion 51a formed at the lower end of the No. 1 is fitted into the locking hole 33a of the protruding piece 33.

On the other hand, in the present embodiment, as shown in FIG. 24 and FIG. 25, the restricting piece 91 is the curved portion 4 of the closing plate 40.
It is formed by bending downward slightly from the inner part than 0a. That is, the regulating piece 91 is not curved so as to fit the R portion of the covering-side case 24 at a substantially central portion of the side edge portion of the closing plate 40, but is slightly bent between the regulating piece 91 and the inner wall surface of the covering-side case 24. It forms a space and is bent vertically downward. Further, the lower end portion 91a of the restriction piece 91 extends to the cutout portion 35 as in the first embodiment, but the lower end portion 91a is curved outwardly in a mountain shape. Therefore, the covering-side case 24 and the fixed-side case 23 are brought into the regular closed state, and the protruding piece 3 is provided in the notch 35.
When 3 is aligned, the lower end portion 91a of the restriction piece 91 is pressed against the inner wall surface of the protruding piece 33 with an elastic force. Also, the lower end portion 91a curved in the shape of the mountain
An engaging projection 92 is formed on the top of the engaging hole 33a so that it can be fitted into the engaging hole 33a of the protruding piece 33 in the normal closed state. Since the other components are the same as those in the first embodiment, the same parts are designated by the same reference numerals and the description thereof will be omitted.

In the present embodiment as well, in order to seal the substrate storage box, the restriction piece 9 is used as in the first embodiment.
The cover-side case 24 is attached to the fixed-side case 23 while bending and deforming 1. As a result, as the two cases 23, 24 are brought into the proper closed state, the restricting piece 91 is provided with the notch 35.
Enter the inside of the protruding piece 33 aligned with
1a to the locking hole 3 of the protruding piece 33
Lead to 3a.

By the way, when the covering side case 24 and the fixed side case 23 are in the closed state, the notch 3 is normally formed.
Although the protruding piece 33 that is aligned with the inside of the casing 5 and the inner wall surface of the covering-side case 24 are flush with each other, they may not be flush with each other due to an error in assembly or the like, and a step may occur. However, when this step difference occurs, for example, in the direction in which the projecting piece 33 is displaced outward from the inner wall surface of the covering-side case 24, the regulating piece 51 causes the covering-side case 24 to move as in the first embodiment. If it extends in close contact with the inner wall surface, the restriction piece 5
Therefore, a gap is created between 1 and the protruding piece 33, and the amount of protrusion of the locking projection 51a from the locking hole 33a becomes small. On the contrary, when the protruding piece 33 is displaced inward from the inner wall surface of the covering-side case 24, the lower end portion of the restricting piece 51 has the protruding piece 3
3 is pressed inward and deformed obliquely, and as a result, the locking projection 51a is not fitted into the locking hole 33a but remains caught on the opening edge.

However, in this embodiment, the restricting piece 91 extends downward while forming a slight space between the restricting piece 91 and the inner wall surface of the covering side case 24, and the lower end portion 91a is curved in a mountain shape. When the lids 23 and 24 are in the proper closed state, the lower end of the restriction piece 91 is pressed against the inner wall surface of the protruding piece 33. Therefore, even if the protruding piece 33 and the inner wall surface of the covering-side case 24 are slightly displaced and aligned, a gap is created between the lower end portion of the restricting piece 91 and the protruding piece 33, or the lower end portion of the restricting piece 91 is pressed. The locking projection 92 is pushed out and fitted into the locking hole 33a without being deformed obliquely.

Therefore, in this embodiment, both cases 23,
In the regular closed state of 24, the locking projection 92 is securely fitted into the locking hole 33a, and the tip of the locking projection 92 projects from the locking hole 33a so that it can be easily caulked by heat. The invention of the present embodiment can naturally be applied to the second, third and fourth embodiments. [Other Embodiments] The present invention can be variously modified, and the following modifications are also included in the technical scope of the present invention. (1) In each of the above-described embodiments, both the fixed side and the covering side cases 23 and 24 are made of metal, but the covering side case may be made of resin, and in such a case, the closing plate is used. Can be integrated with the case.

(2) Further, although the hinge is formed by the engagement of the hooking hole 32 and the hooking piece 38, the four corners of the covering side case are screwed to the fixed side case without forming such a hinge. It may be one.

(3) As in each of the above embodiments, the restricting pieces 51, 71, 91 do not necessarily have to be formed integrally with the closing plate 40, but may be formed by themselves. In this case, it is necessary to be able to fix it to the inner surface of the case by appropriate means. For example, in this way, the resin member may be extended from the fixed side case and heat-crimped on the outer surface of the covering side case.

(4) Further, a small hole is provided in each of the fixed side and the covering side, a resin member is bridged between the small holes, and both ends of the resin member are respectively passed through both small holes. The outer surface of the case may be heat crimped.

(5) The lower end portion of the locking projection 51a in the first embodiment may be cut out in a tapered shape, and the tapered surface may be engaged when the tip end of the protruding piece 33 is crossed over. As a result, the locking projection is smoothly guided to the locking hole, which facilitates the sealing work.

(6) In the second embodiment described above, the cross-shaped notch 62 is formed on the engaging projection 61, but a notch that divides the engaging projection into two parts vertically or horizontally is provided. It may be a notch that equally divides the locking protrusions at appropriate angles, that is, one in which the divided pieces (protrusions in the second embodiment) divided by the notches are uniformly pushed open. If

(7) Further, a conical taper surface formed by these may be set in the central portion where the projecting pieces are gathered together to facilitate introduction of the tip of the heat staking jig.

(8) In the third embodiment described above, the protruding piece 34 of the short side portion of the fixed case 23 is used, but the present invention is not limited to this, and the long side portion having a hooking hole or the like is formed. The opposite long side (in the first embodiment, the bent wall 27 side)
It is also possible to form a projecting piece and to provide a corresponding control piece on the covering side case. In addition, the present invention can be implemented with various modifications without departing from the scope.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire first embodiment.

FIG. 2 is a perspective view showing a fixed case in the same embodiment.

FIG. 3 is an exploded perspective view showing a cover-side case and a closing plate in the same embodiment.

FIG. 4 is a perspective view showing the cover-side case in the same embodiment by turning it over.

FIG. 5 is a cross-sectional view showing a state in which a closing plate is attached to the covering-side case in the same embodiment.

FIG. 6 is a cross-sectional view showing a state in which the hooking piece of the covering side case is engaged with the hooking hole of the fixed side case in the same embodiment.

FIG. 7 is a cross-sectional view showing a state in which the circuit board according to the same embodiment is housed.

FIG. 8 is a perspective view showing a state in which the circuit board according to the same embodiment is stored.

FIG. 9 is a rear view showing the back surface of the game board in the same embodiment.

FIG. 10 is a front view showing the front of the pachinko machine in the same embodiment.

FIG. 11 is a partially enlarged side view showing a restriction piece in the same embodiment.

FIG. 12 is a partial enlarged cross-sectional view showing a sealing process (a state where the restriction piece is curved) in the same embodiment.

FIG. 13 is a partially enlarged cross-sectional view showing a sealing process (a state in which the tip of the restriction piece enters the inside of the protruding piece) in the same embodiment.

FIG. 14 is a partially enlarged cross-sectional view showing a sealing process (sealed state) in the same embodiment.

FIG. 15 is a partially enlarged side view showing a state in which the sealing paper in the embodiment is attached.

FIG. 16 is a partially enlarged perspective view showing a locking protrusion in the second embodiment.

FIG. 17 is a partially enlarged side view showing a fitted state of the locking projection in the same embodiment.

FIG. 18 is a partially enlarged cross-sectional view showing a state of thermal staking in the same embodiment.

FIG. 19 is a partially enlarged side view showing a state in which the sealing paper in the embodiment is attached.

FIG. 20 is a partially enlarged perspective view showing a restriction piece in the third embodiment.

FIG. 21 is a side view showing a state before the lid is closed in the same embodiment.

FIG. 22 is a side view showing a closed state in the same embodiment.

FIG. 23 is a partially enlarged side view showing a protruding piece according to the fourth embodiment.

FIG. 24 is a partially enlarged perspective view showing a restriction piece according to a fifth embodiment.

FIG. 25 is a partially enlarged cross-sectional view showing a fitted state of the locking protrusion in the same embodiment.

[Explanation of symbols]

 21 ... Board storage box 22 ... Circuit board 23 ... Fixed side case 24 ... Covering side case 33a ... Locking hole (opening) 81 ... Notch groove (opening) 51, 71, 91 ... Restricting pieces 51a, 61, 72, 92 ... Locking protrusion (end)

Claims (1)

[Claims] 1. A fixed-side case for fixing a circuit board for controlling a game operation, and a covering-side case that is aligned with the fixed-side case. The circuit boards are sealed and housed in both cases. And a resin member is bridged between the covering-side case and the fixed-side case in a space in which the circuit board is housed, and an end portion of the resin member is provided on at least one side of the both cases. A board storage box sealing structure for a pachinko machine, characterized in that both cases are sealed by pulling out from the opening formed in and then crimping the ends.