JPH09162556A - Electronic circuit unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic circuit unit wherein assembly is very easy and a circuit board is not damaged. SOLUTION: An electronic circuit unit 1 is constituted by accommodating a circuit board 2 in a case 5. In the circuit board 2, a belt type region along the one long side of the upper surface of a rectangular printed board 3 is made the mounting region of an electric connection part 4, and the other region is made the mounting region of electronic circuit components. The case 5 is constituted of a case main body 6 having an upper surface aperture and a lid 7 capable of opening and shutting wherein one end edge is engaged and linked with the aperture edge of the case main body 6. The lid 7 consists of a lid plate part 8 which covers only the mounting region of electronic circuit components of the circuit board 2, and a bulkhead part 9 which is formed in a unified body with the front end edge of the lid part 8 and faces downward. The tip end edge of the bulkhead 9 abuts against the upper surface of the circuit board 2. The mounting region of the electronic circuit components is in the closed state, and the mounting region of connection terminals 4 is in the opened state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic circuit unit incorporated in, for example, an electronic game machine such as a slot machine or a pachinko game machine, and in particular, the present invention comprises a circuit board housed in a case. The present invention relates to an electronic circuit unit.

[0002]

2. Description of the Related Art Generally, an electronic game machine incorporates a circuit board on which electronic circuit components are mounted, and controls the operation of the game machine. By the way, it is necessary to control an electronic game machine such as a slot machine or a pachinko game machine, which is a business model for business manners, according to legal regulations, and the setting of the control state is carried out by each machine manufacturer. Therefore, it is illegal to arbitrarily adjust or modify the control circuit of the circuit board of the electronic game machine of this kind in the playground.

In order to prevent this illegal act, a method of incorporating a circuit board enclosed in a case into a machine has been devised, and the applicant of the present invention has previously proposed an electronic device suitable for such an application. A circuit unit was proposed (actual fairness 5-47510).

FIG. 7 and FIG. 8 show the electronic circuit unit 40. The circuit board 42 has a rectangular planar shape on the surface of which a large number of electronic circuit components 41 are mounted, and a plane which covers the circuit board 42. The case 43 has a rectangular shape.
The circuit board 42 has a width larger than that of the case 43, and a connection terminal 44 to an external connector is formed at one end edge in the width direction.

The circuit board 42 and the case 43 are in a state in which the connection terminals 44 of the circuit board 42 are projected from the front end surface of the case 43 to the outside of the case and both end edges are projected to the outside of the case 43 from both end surfaces of the case 43. Then, both ends of the circuit board, which are integrally fixed by the screw 45 and protrude from the case 43, are used as slide pieces 46.

FIG. 9 shows a state in which the electronic circuit unit 40 is incorporated in an electronic game machine 47 such as a slot machine. A housing 4 for incorporating the electronic circuit unit 40 in an appropriate place in the internal space of the electronic game machine 47.
8 is attached. A connector 49 is attached to the bottom of the housing 48, and a guide groove 50 for guiding the electronic circuit unit 40 to the connector 49 is formed at a position orthogonal to and opposite to the connector 49.

The connection terminals 44 of the electronic circuit unit 40 are opposed to the housing 48 in the electronic game machine 47, and the slide pieces 46, 46 are fitted into the upper and lower guide grooves 50, 50, and along the guide grooves 50, 50. The connection terminal 44
By inserting the electronic circuit unit 40 until the connector is connected to the connector 49.
Will be incorporated within.

[0008]

However, in this electronic circuit unit 40, since the circuit board 42 is clamped by the case 43 and both are integrally fixed by the screw 45, the case 43 is assembled when the electronic circuit unit 40 is assembled.
It is troublesome to position the circuit board 42 with respect to and to fix it with screws. Further, since the peripheral edges of the circuit board 42 such as the slide pieces 46, 46 and the connection terminals 44 are projected to the outside of the case 43, the peripheral edges of the circuit board 42 may be damaged during handling such as assembly and transportation, and attachment / detachment to / from the connector. There is.

The present invention has been made in view of the above problems, and is extremely easy to assemble and handle by devising a structure of a case for accommodating a circuit board and a mounting position of an electrical connection portion on the circuit board. It is an object of the present invention to provide an electronic circuit unit that does not damage a circuit board at times.

[0010]

According to the electronic circuit unit of the present invention, a circuit board on which an electric connection portion to the outside and an electronic circuit component are divided and mounted on the upper surface, and a mounting area of the electric connection portion are And a case for housing the entire circuit board in an open state and a sealed area for mounting the electronic circuit component. The case is composed of a case body having an upper surface opening, and an openable / closable lid whose one end edge is pivotally supported by the case body. The lid is integrally formed with a partition wall portion, which covers the mounting area of the electronic circuit component of the circuit board, on the lower surface of the lid plate portion, the front edge of which is in contact with the upper surface of the circuit board to seal the mounting area of the electronic circuit component. It consists of

[0011]

After the cover of the case is opened and the circuit board is installed in the case main body through the upper opening of the case main body, the cover is closed and the assembly of the electronic circuit unit is completed. At this time, the leading edge of the partition wall portion integrally formed on the lower surface of the lid plate portion abuts the upper surface of the circuit board to press and fix the circuit board. The mounting area of the circuit component is sealed by the cover plate portion and the partition wall portion. Further, in this electronic circuit unit, the entire circuit board is housed in the case, so the circuit board is protected from various external forces applied during handling.

[0012]

1 shows the appearance of an electronic circuit unit 1 according to an embodiment of the present invention, in which an entire circuit board 2 is housed in a case 5 made of an insulating material such as plastic. The circuit board 2 is a rectangular printed board 3
And various electrical circuit parts (not shown) such as ICs mounted on the upper surface of the printed circuit board 3 and an electrical connection portion 4 including a plurality of connectors. The strip-shaped area along the long side of the
And the other area is the mounting area of the electronic circuit component.

As shown in FIGS. 1 and 2, the case 5 is composed of a case body 6 having an upper surface opening, and an openable / closable lid 7 whose one end edge is pivotally connected to the case body 6. The case body 6 has a rectangular bottom plate portion 6a that fits the outer shape of the circuit board 2, and a front plate portion 6b, a rear plate portion 6c, and side plate portions that are integrally provided along each side of the bottom plate portion 6a. 6d and 6e, the circuit board 2 is housed and arranged in the case body 6 with the mounting area of the electrical connection portion 4 positioned on the front plate portion 6b side.

The lid 7 covers the electronic circuit component mounting area of the circuit board 2 only, and the lid plate 8
And a downwardly facing partition wall portion 9 integrally formed with the front edge of the. The lid 7 has its rear end edge supported by the upper end edge of the rear plate portion 6c of the case body 6 via a pair of pivotally supporting portions 10, 10, and when the lid 7 is closed, both side edges of the lid plate portion 8 are closed. Contacts the both side plate portions 6d and 6e of the case body 6, and the leading edge of the partition wall portion 9 contacts the upper surface of the circuit board 2.

When the lid 7 is closed, the mounting area of the electronic circuit components on the circuit board 2 includes the rear plate portion 6c and both side plate portions 6d and 6e of the case body 6, the lid plate portion 8 of the lid 7 and the partition wall. Although it is completely enclosed by the portion 9 and is in a sealed state, the mounting area of the electrical connection portion 4 of the circuit board 2 is located between the partition wall portion 9 of the lid 7 and the front plate portion 6c of the case body 6. Therefore, the upper side is opened, and thus it is possible to connect the electrical connecting part 4 with an electrical connecting tool from another device.

On the upper surface of the bottom plate portion 6a of the case main body 6, a projecting edge portion 19 for projecting and supporting the circuit board 2 slightly above the plate surface of the bottom plate portion 6a is provided. The ridge 1
9 is provided along the outer peripheral edge of the bottom plate portion 6a, and three pillar portions 22 having the same height as the projecting edge portion 19 are provided along the rear plate portion 6c.
The printed circuit board 3 is formed at the center of each upper surface.
A shaft-shaped protrusion 21 slightly longer than the thickness of the protrusion is provided.

When the circuit board 2 is housed and arranged in the case body 6, these protrusions 21 are engaged with through holes 30 formed at corresponding positions of the circuit board 2, as shown in FIG. Position and fix the circuit board 2.

On the inner surface of the front plate portion 6b of the case main body 6, a plurality of projecting pieces 24 are integrally projectingly provided above the projecting edge portion 19, and the projecting piece 24 and the projecting edge portion 19 are joined together. The edges of the printed circuit board 3 are sandwiched between them.

A mounting member 17 for mounting the electronic circuit unit 1 in a suspended state in an electronic game machine is integrally provided on the outer surface of the front plate portion 6b of the case main body 6, and the mounting member 17 is provided. A hook attached to the inside of the body of the electronic game machine is hooked on the formed attachment hole 18.

In FIGS. 1 and 2, 11 is a vent hole provided in the bottom plate portion 6a of the case body 6 and a large number of lid plate portions 8 of the lid 7, and 12 is a recess for hooking a finger at the time of opening / closing operation. Reference numerals 13 are reinforcing ribs projectingly provided in a grid pattern on the upper surface of the bottom plate portion 6a of the case body 6 and the lower surface of the lid plate portion 8 of the lid 7.

FIG. 3 shows the structure of a pivot portion 10 that pivotally connects the case body 6 and the lid 7, and (1) shows a state where the case body 6 and the lid 7 are separated, (2) Shows a state in which the case body 6 and the lid 7 are pivotally connected to each other. The pivotal support portions 10 are provided at symmetrical positions between the lid 7 and the case main body 6, respectively, and a pair of connecting shafts 26, 26 integrally provided at the rear end of the lid plate portion 8 of the lid 7. And the connecting shafts 26, 2 on the upper edge of the rear plate portion 6c of the case body 6.
6 and a pair of bearings 27, 27 that are integrally formed in correspondence with each other.

Each connecting shaft 26 projects in the opposite direction, each bearing 27 is open inward and downward, and each bearing 2
The lid 7 and the case body 6 are pivotally supported by engaging the connecting shafts 26, 26 from the open portions below the parts 7, 27, respectively. The end edge of the lid plate portion 8 where each connecting shaft 26 is located is cut out to form a recess 31. When the connecting shaft 26 and the bearing 27 are engaged with each other, the bearing 27 corresponds to the recess 31. To do.

As shown in FIG. 2, a pressing piece 14 and an engaging piece 15 are integrally projectingly provided on both side edges of the inner surface of the cover plate portion 8. The pressing piece 14 is for supporting the upper surface of the circuit board 2 housed in the case body 6, and includes the lid 7
When the is closed, as shown in FIG. 6, the projecting length is set so that the tip end thereof contacts the circuit board 2.

The engaging piece 15 is for engaging with the engaging holes 23 formed in the side plates 6d and 6e of the case body 6 to keep the lid 7 and the case body 6 in a closed state. , Fig. 4
The state where the engagement piece 15 and the engagement hole 23 are disengaged is shown in (1), and the state where the engagement piece 15 and the engagement hole 23 are engaged is shown in FIG. 4 (2). . An engaging protrusion 28 is integrally formed on the tip edge of the engaging piece 15 outwardly over the entire width, and when the lid 7 is closed, the engaging protrusion 28 engages with the engaging hole 23. , The lid 7 and the case body 6 are held in a closed state.

To assemble the electronic circuit unit having the above structure, the lid 7 of the case 5 is opened, the circuit board 2 is installed in the case body 6 through the upper opening of the case body 6, and then the lid 7 is closed. Assembly is completed with. At this time,
As shown in FIGS. 5 and 6, since the leading edge of the partition wall portion 9 of the lid plate portion 8 contacts the upper surface of the circuit board 2, the mounting area of the electronic circuit component 29 of the circuit board 2 is located behind the case body 6. The plate portion 6c and both side plate portions 6d and 6e, the cover plate portion 8 and the partition wall portion 9 of the lid 7 are completely enclosed to be in a sealed state, while
The mounting area of the electrical connection portion 4 of the circuit board 2 is located between the partition wall portion 9 of the lid 7 and the front plate portion 6c of the case body 6 and is open upward.

The circuit board 2 has a case body 6 at the front edge.
It is sandwiched between the projecting piece 24 of the front plate portion 6b and the projecting edge portion 19, and the rear end edge is located on the projecting edge portion 19 in a state where the through hole 30 is engaged with the projection 21 of the case body 6. While being supported, it is pressed and fixed from above by the partition 9 and the pressing piece 14 of the cover plate 8.

The electronic circuit unit 1 is installed in the machine body by hooking the attachment member 17 of the case body 6 to a hook provided in the electronic game machine and suspending it. However, the entire circuit board 2 is the case 5. Since it is housed inside, the circuit board 2 is protected from various external forces applied during handling. When the electronic circuit unit 1 is actually incorporated into the slot machine, a label for sealing is attached between the case body 6 and the lid 7 so as not to be peeled off from the outside.

[0028]

As described above, according to the present invention, the circuit board on which the external electric connection portion and the electronic circuit component are divided and mounted on the upper surface, and the mounting area of the electric connection portion are opened, The electronic circuit unit is configured by a case for housing the entire circuit board in a sealed area of the circuit parts, and the case has a case body with an upper surface opening, and one edge of the case body is pivotally supported. And a lid that can be opened and closed. The lid is mounted on the lower surface of the lid plate portion that covers the electronic circuit component mounting area of the circuit board, and the leading edge of the lid contacts the upper surface of the circuit board to mount the electronic circuit component. Since the partition wall part that seals the area is integrally formed, open the case lid,
After installing the circuit board in the case body from the top opening of the case body, you can easily assemble the electronic circuit unit by simply closing the lid. There is no trouble in stopping. Further, since the entire circuit board is housed in the case body, the circuit board is protected from various external forces, and there is no risk of the peripheral edge of the circuit board being damaged during handling.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an appearance of an electronic circuit unit according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which a case is opened.

FIG. 3 is a perspective view showing a pivotal support portion between a lid and a case body.

FIG. 4 is a perspective view showing an engaging portion between a lid and a case body.

FIG. 5 is a sectional view taken along the line AA of FIG. 1;

FIG. 6 is a sectional view taken along the line BB of FIG. 1;

FIG. 7 is a perspective view showing an appearance of a conventional electronic circuit unit.

FIG. 8 is a sectional view taken along line CC of FIG. 7;

FIG. 9 is a partially cutaway side view showing a state in which a conventional electronic circuit unit is incorporated in an electronic game machine.

[Explanation of symbols]

 2 circuit board 4 electrical connection part 5 case 6 case body 7 lid 8 lid plate part 9 partition wall part 29 electronic circuit component

Claims (1)

[Claims] 1. A circuit board in which an external electrical connection portion and an electronic circuit component are separately mounted on the upper surface, and a mounting region of the electrical connection portion is opened, and a mounting region of the electronic circuit component is sealed. And a case for accommodating the entire circuit board in a state, the case including a case body having an upper surface opening and an openable / closable lid pivotally supported at one end edge of the case body. Is formed on the lower surface of the lid plate portion overlying the mounting area of the electronic circuit component of the circuit board, a partition portion integrally forming the leading edge contact with the upper surface of the circuit board to seal the mounting area of the electronic circuit component. Electronic circuit unit consisting of.