JP2557312Y2 - Printed circuit board replacement structure for desktop electronic equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention comprises a main printed circuit board fixed in an equipment housing and a sub printed circuit board electrically connected to the main printed circuit board. The present invention relates to a desktop electronic device whose function can be changed by replacement, and more particularly to a replacement structure for replacing the sub-printed circuit board.

[0002]

2. Description of the Related Art FIG. 4 is a perspective view showing a tabletop electronic device having a conventional printed circuit board replacement structure. In the figure, reference numeral 20 denotes a device housing, and 21 denotes a main printed circuit board on which electronic components (not shown) are mounted. The main printed circuit board 21 is fixed in the device housing 20. A book post 23 is provided. Reference numeral 24 denotes a sub-printed circuit board on which electronic components (not shown) are mounted, and has a connector 25 on the lower surface side.

The sub-printed circuit board 24 is electrically connected to the main printed circuit board 21 by fitting a connector 25 on a lower surface side of the sub-printed circuit board 22 to the connector 22, and the four corners of the sub-printed circuit board 24 are screwed on the posts 23. By fixing, it is mechanically attached to the main printed circuit board 21. Reference numeral 27 denotes an upper cover having a U-shaped cross section.
1 and the device housing 2 so as to cover the sub-printed circuit board 24.
0 is fixed by a screw (not shown) or the like.

In such a desk-top electronic device, when replacing the sub-printed circuit board 24 to change its function, first remove the upper cover 27 from the device housing 20 and loosen the screws 26 to remove the sub-printed circuit board 24. Is released, and the connector 25 of the sub printed circuit board 24 is disconnected from the connector 22 of the main printed circuit board 21, and the electrical connection between the sub printed circuit board 24 and the main printed circuit board 21 is also released. After that, a connector of another sub-printed circuit board prepared in advance is fitted to the connector 22 of the main printed circuit board 21, and the four corners of the sub-printed circuit board are fixed on the posts 23 with screws 26. Similarly, the upper cover 27 is fixed to the device housing 20.

[0005]

However, in the above-described conventional structure, since the upper cover must be attached and detached when the sub-printed circuit board is replaced, workability at the time of sub-printed circuit board replacement is poor. There is a problem that. In addition, the sub-printed circuit board to be replaced or the sub-printed circuit board removed from the main printed circuit board has an adverse effect on the electronic parts during maintenance and transportation because the mounted electronic parts are exposed. Therefore, there is a problem that special packing is required and the time and effort required for packing are required.

The present invention has been made to solve such a problem, and is excellent in workability when replacing a sub-printed circuit board, and requires special packaging during maintenance or transportation of the sub-printed circuit board. It is an object of the present invention to realize a printed circuit board replacement structure for a desk electronic device that is not required.

[0007]

In order to achieve this object, the present invention provides a main printed circuit board fixed in an apparatus body, a sub-printed circuit board connected to the main printed circuit board, and both substrates. An upper cover fixed to the device main body so as to cover the device main body, wherein the function of the device can be changed by replacing the sub-printed circuit board in a printed circuit board replacement structure of a tabletop electronic device, An opening is provided in the peripheral surface, a connector is attached to the main printed circuit board so as to face the opening, the sub-printed circuit board is stored in the sub-printed circuit board storage case, and the sub-printed circuit board storage Attach a connector corresponding to the connector of the main printed circuit board to the housing, and connect this connector to the sub-printed circuit board by wiring. The main printed circuit board and the sub printed circuit board are electrically connected by inserting the sub-printed circuit board housing from the opening of the device main body and fitting the connectors together. Features.

[0008]

According to the present invention having such a configuration, when the sub-printed circuit board is replaced for changing the function of the tabletop electronic device, the sub-printed circuit board housing is pulled out from the opening of the device housing, and another sub-printed circuit board housing is removed. A new sub-printed circuit board housing housing the sub-printed circuit board is inserted from the opening, and the connector attached to the inserted new sub-printed circuit board housing is mounted on the main printed circuit board. The main printed circuit board and the sub printed circuit board are electrically connected by being fitted to the connector.

Therefore, according to this, it is possible to easily replace the sub-printed circuit board without attaching / detaching the upper cover, thereby improving the workability when replacing the sub-printed circuit board and improving the sub-printed circuit board. Since the circuit board is always housed in the sub-printed circuit board housing, there is no need for special packaging for protection of mounted electronic components even during maintenance and transportation.

[0010]

Embodiment An embodiment will be described below with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a desktop electronic device having a printed circuit board replacement structure according to the present invention, and FIG. 2 is a side sectional view of a sub-printed circuit board housing used in the embodiment of FIG. FIG. 3 is a partially broken perspective view of the sub-printed circuit board housing of FIG. 2 as viewed from the bottom side. In the figure, reference numeral 1 denotes a device housing, and 2 denotes a main printed circuit board on which electronic components (not shown) are mounted. The main printed circuit board 2 is fixed in the device housing 1 and has a predetermined peripheral surface. An opening 3 for insertion and removal of a sub-printed circuit board housing, which will be described later, is provided at a location, for example, on the rear side, and the main printed circuit board 2 is inserted so as not to hinder the insertion.
Is partially cut away.

Reference numeral 4 denotes a connector, and the fitting direction of a sub-printed circuit board to be described later with the connector is the main printed circuit board 2.
It is mounted on the main printed circuit board 2 so as to face the opening 3 in a direction parallel to. 5a
Is a guide rail for guiding the insertion of a sub-printed circuit board housing to be described later.
The main printed circuit board 2 is fixed on the bottom surface of the device housing 1 by screws or the like (not shown) which are superposed on the main printed circuit board 2.

Reference numeral 5b denotes a guide rail formed on one side of the device housing 1 so as to form a pair with the guide rail 5a.
The two guide rails are located so as to extend in the front-rear direction with the connector 4 interposed therebetween. The guide rail 5b
Can be formed separately from the device housing 1 and can be fixed to the bottom surface of the device housing 1 with screws or the like like the guide rail 5a. Reference numeral 6 denotes a fixing member having a screw hole 7, and the connector 4 so as to be positioned on both sides of the main printed circuit board 2.
The main printed circuit board 2 is fixed on the bottom surface of the device housing 1 by screws or the like (not shown) which are superposed on the main printed circuit board 2.

Reference numeral 8 denotes a sub-printed circuit board on which electronic components (not shown) are mounted. The sub-printed circuit board 8 is fixed in a sub-printed circuit board housing 9. In the lower part on the rear surface side of the sub-printed circuit board housing 9, a wiring housing 1 is provided.
0 is formed so as to protrude, and guide grooves 11 corresponding to the guide rails 5a and 5b are formed on both side surfaces. Reference numeral 12 denotes a connector mounted on the front surface of the wiring storage unit 10. A connector 14 is connected to the connector 12 via a wiring 13 stored in the wiring storage unit 10 as shown in FIGS. And this connector 1
4 is fitted with a connector 15 provided on the lower surface of the sub-printed circuit board 8, whereby the sub-printed circuit board 8 is electrically connected to the connector 12.

Although the connectors 14 and 15 are used here to enable the sub-printed circuit board 8 to be attached to and detached from the sub-printed circuit board housing 9, the sub-printed circuit board 8 needs to be attached and detached. If not, the wiring 13 may be directly connected to the sub-printed circuit board 8 by soldering or the like so that the sub-printed circuit board 8 and the connector 12 are electrically connected to each other. Reference numeral 16 denotes a plurality of screws with knobs provided so as to penetrate the wiring housing portion 10 of the sub-printed circuit board housing 9.
Are located on the rear surface side of the wiring housing portion 10, and the screw portions 16 b project from both sides of the connector 12 to the front surface side of the wiring housing portion 10. Reference numeral 17 denotes an upper cover having a U-shaped cross section.

Next, the operation of the above configuration will be described. First, in order to assemble the device housing 1 to which the main printed circuit board 8 is fixed, the sub-printed circuit board storage case 9 to which the sub-printed circuit board 8 is fixed, and the upper cover 17, the sub-printed circuit board storage The front part of the housing 9 is inserted through the opening 3 provided in the equipment housing 1 to engage the guide rails 5a, 5b with the guide groove 11, and the guide rails 5a, 5b and the guide groove 11 are used as guides. Insert further.

The insertion of the connector 12 connected to the sub-printed circuit board 8 into the connector 4 provided on the main printed circuit board 2 is slightly before the tip of the threaded portion 16b of the screw 16 with thumb. Reaches the screw hole 7 of the fixing member 6 provided in the device housing 1. When the knob 16a of the screw 16 with the knob is pinched with a finger and turned in a predetermined direction, the screw 16b is screwed into the screw hole 7. To screw.

As a result, the connector 12 is positioned with respect to the connector 4, and the screw portion 16b is further tightened into the screw hole 7, so that the connector 12 fits into the connector 4, and the main printed circuit board 2 is connected by the connectors 4 and 12. The sub-printed circuit board 8 is electrically connected to the sub-printed circuit board 8, and the sub-printed circuit board storage case 9 is fixed in the device case 1. Then, the assembly is completed by fixing the upper cover 17 to the device housing 1 with screws or the like (not shown) so as to cover the main printed circuit board 2 and the sub printed circuit board housing 9.

Next, when replacing the sub-printed circuit board 8 in order to change the function of the tabletop electronic device, the screw 16 with the knob is turned in the opposite direction to the above, so that the screw portion 16b of the fixing member 6 Connector 1 as it comes out of hole 7
Since the connector 2 comes out of the connector 4, the screw portion 16 b is completely removed from the screw hole 7, and then the sub-printed circuit board housing 9 is removed from the device housing 1.

Thus, the sub-printed circuit board 8 can be removed from the equipment housing 1 together with the sub-printed circuit board storage housing 9 without removing the upper cover 17 from the equipment housing 1. By inserting the circuit board housing 9 through the opening 3 of the equipment housing 1 and fixing the new sub-printed circuit board housing 9 in the equipment housing 1 in the same procedure as in the assembly, , Sub-printed circuit board 8 in sub-printed circuit board housing 9
Are electrically connected to the main printed circuit board 2.

In the embodiment described above, the screw 1
The sub-printed circuit board housing 9 is fixed to the device housing 1 by using the fixing member 6 having the screw hole 7 and the fixing member 6. However, the present invention is not limited to this. The sub-printed circuit board housing may be fixed to the device housing 1 by a combination of
However, in this case, consideration should be given to providing a guide pin and a guide hole so that the connector 12 connected to the sub-printed circuit board 8 can be smoothly fitted into the connector 4 provided on the main printed circuit board 2. Is desirable.

[0021]

As described above, according to the present invention, an opening is provided on the peripheral surface of the device body, a connector is attached to the main printed circuit board so as to face the opening, and the sub printed circuit board is connected to the sub printed circuit board. The sub-printed circuit board is housed in the printed circuit board housing, and a connector corresponding to the connector of the main printed circuit board is attached to the sub-printed circuit board housing, and this connector is electrically connected to the sub-printed circuit board by wiring. The sub-printed circuit board housing is inserted through the opening of the device body, and the main printed circuit board and the sub-printed circuit board are electrically connected by fitting the connectors together. When replacing the sub-printed circuit board to change the function of the device, pull out the sub-printed circuit board storage case from the opening of the device case, A new sub-printed circuit board housing housing housing the sub-printed circuit board is inserted from the opening, and the connector attached to the inserted new sub-printed circuit board housing is placed on the main printed circuit board. The main printed circuit board and the sub-printed circuit board are electrically connected to each other by being fitted into the connector.

Therefore, according to this, it is possible to easily replace the sub-printed circuit board without attaching / detaching the upper cover, and it is possible to obtain an effect that the workability when replacing the sub-printed circuit board is improved. In addition, since the sub-printed circuit board is always stored in the sub-printed circuit board storage case, there is an advantage that special packing for protecting mounted electronic components is not required during maintenance or transportation.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a desktop electronic device having a printed circuit board replacement structure according to the present invention.

FIG. 2 is a side sectional view of a sub-printed circuit board housing used in the embodiment of FIG. 1;

FIG. 3 is a partially broken perspective view of the sub-printed circuit board housing of FIG. 2 as viewed from the bottom surface side.

FIG. 4 is a perspective view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device housing 2 Main printed circuit board 3 Opening 4 Connector 5a, 5b Guide rail 8 Sub printed circuit board 9 Sub printed circuit board storage case 12 Connector 13 Wiring 14, 15 Connector 16 Screw with knob 17 Top cover

Claims (1)

(57) [Scope of request for utility model registration] 1. A main printed circuit board fixed in a device main body, a sub printed circuit board connected to the main printed circuit board, and an upper cover fixed to the device main body so as to cover the two substrates. In a printed circuit board replacement structure of a table-top electronic device, wherein the function of the device can be changed by replacing the sub-printed circuit board, an opening is provided on a peripheral surface of the device main body, and the opening is opposed to the opening. A connector is attached to the main printed circuit board so that the sub-printed circuit board is housed in the sub-printed circuit board housing, and the connector corresponding to the connector of the main printed circuit board is stored in the sub-printed circuit board housing. The connector is electrically connected to the sub-printed circuit board by wiring, and the sub-printer is Wherein the main printed circuit board and the sub printed circuit board are electrically connected by inserting the circuit board housing and fitting the connectors together. .