JP3358797B2 - Controller device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a controller device having improved noise resistance. More specifically, it relates to a field controller system.

[0002]

2. Description of the Related Art FIG. 6 is an explanatory view of the configuration of a conventional example generally used in the prior art.
formation "CENTUM CS Installation Guidance", page C2-8, date of issue: January 1996, 3rd edition, published by Yokogawa Electric Corporation.

In the figure, a basic unit rack 1 includes:
A power supply unit PSU, a central processing unit CPU, a communication unit CPL, and two input / output units IOU are mounted.

The basic unit rack 1, power supply unit PSU, central processing unit CPU, communication unit CP
A basic unit 2 is constituted by L and two input / output units IOU.

FIG. 7 shows a central processing unit CPU and two input / output units I among the components of the basic unit 2 of FIG.
FIG. 8 is an explanatory view of a main part configuration with the OU removed.
FIG. 9 is a side view of FIG.

In FIG. 1, a socket 11 is provided with a connector 12 of an input / output unit IOU. The mounting screw 14 of the input / output unit IOU is mounted in the screw hole 13.

FIG. 10 is an explanatory view of a main part of the input / output unit IOU. FIG. 11 is a plan view of FIG.
FIG. In the figure, as shown in FIG.
Is a hole through which a signal line from a sensor, a valve, or the like disposed outside is passed.

Returning to FIG. 6, the input / output expansion rack 3 is provided so as to be connected to the basic unit rack 1. In the input / output expansion rack 3, up to three input / output units IOU can be added and mounted.

[0009]

In order to achieve this object, the present invention provides a printed circuit board body, a nest provided on the circuit board body, and a central processing unit inserted and mounted in the nest. A first cover made of a shield material covering one surface of the printed circuit board body composed of one sheet, and a shield material covering the other surface of the printed circuit circuit board body. A second cover; and the first cover and the second cover provided on at least one of the first cover and the second cover.
Is provided continuously over the entire circumference of the joint
A cover overlapping portion made of a shielding material for enhancing a shielding property of the printed circuit board body; a mounting hole provided in the second cover to which a nest portion is mounted; a nest portion mounted in the mounting hole; The nest portion and the nest portion are provided at a joint portion of the portion with the second cover.
Overlap continuously over the entire circumference of the joint with the second cover
A controller device comprising: a nest overlapping portion provided together with the printed board circuit board main body to enhance a shielding property. (2) The controller device according to (1), further including a first cover made of an iron material, a second cover, and a cover overlapping portion. (3) a first cover frame provided on a peripheral portion of the first cover and a second cover frame provided on a peripheral portion of the second cover and overlapping the first cover frame; The controller device according to (1) or (2), further comprising a cover overlapping portion. (4) A cover overlapping portion having the first cover frame portion having a square frame shape and the second cover frame portion having a square frame shape is provided (1) or (2) or (3). The controller device according to (1). (5) A support bar attached from one end to the other end of the first cover or the second cover so as to enhance the strength of the cover (1).
Or the controller device according to (2) or (3) or (4). (6) In order to enhance the shielding performance of the printed circuit board of the CPU central processing unit, the printed circuit board is provided with heat radiation holes provided only in the nest portion in a direction perpendicular to the plate surface. (1)
Or the controller device according to (2) or (3) or (4) or (5). It is what constituted.

The power supply cable 5 is a power supply cable from the power supply 6 to the basic unit 2. The input / output expansion rack power supply cable 7 is a power supply cable from the basic unit 2 to the input / output expansion rack 3.

The input / output expansion rack signal cable 8 is a signal cable from the basic unit 2 to the input / output expansion rack 3. The input / output expansion rack communication cable 9 is a communication cable to the input / output unit IOU.

First printed board (shown by dotted line) 21
Is provided corresponding to a connector for connecting the central processing unit CPU with the power supply unit PSU, the communication unit CPL, and the two input / output units IOU.

The second printed board 22 includes a power supply unit P
It is provided corresponding to the SU and the communication unit CPL. The third printed board 23 is provided corresponding to a place where one end of the power cable 5 is attached.

The fourth and fifth printed boards 24 and 25 are provided corresponding to the input / output units IOU on the basic unit rack 1 side, respectively. Sixth printed board 26
Are provided corresponding to the locations of the sockets with respect to the connectors attached to the output side of the input / output expansion rack communication cable 8.

The seventh printed board 27 is provided corresponding to the location of the socket with respect to the connector attached to the input side of the input / output expansion rack communication cable 8.
The eighth, ninth, and tenth printed boards 28, 29, and 31
Three I / O units IOU on the I / O expansion rack 3 side
Are provided correspondingly.

In the above configuration, as shown in FIG.
The power supply unit PSU supplies power to the central processing unit CPU, the communication unit CPL, and the input / output unit IOU.

The input / output unit IOU transmits or receives analog or digital input / output signals to / from sensors, valves, etc., and transmits / receives signals to / from the central processing unit CPU. The central processing unit CPU receives a signal from the input / output unit IOU, calculates the signal, and sends the signal to the input / output unit IOU.

The communication unit CPL includes an operation monitoring device OP
The processing status of the central processing unit CPU is transmitted to S, and a signal from the operation monitoring device OPS is transmitted to the central processing unit CPU.

If it is necessary to add an input / output unit IOU due to the addition of a sensor or the like, the input / output unit IOU is attached to the input / output expansion rack 3.
Up to three can be added. Next, the power supply cable 7 for the input / output expansion rack and the communication cable 8 for the input / output expansion rack are attached.

[0020]

However, in such an apparatus, (1) the main components on the mounting side are:
Basic unit rack 1 and printed circuit board 6
Sheets 21 to 26 are required.

Furthermore, each printed circuit board is connected by a connector, a cable, or the like, which requires a large number of parts, requires a large number of assembling steps, increases manufacturing costs, and results in an expensive controller device.

(2) When a single printed circuit board is used, connectors and cables are not required, the number of parts is reduced, the number of assembling steps is reduced, the manufacturing cost can be reduced, and an inexpensive controller device can be obtained. If you connect the printed circuit board with a cable, you can use a shielded cable, but if you use a single printed circuit board, it will be easier to pick up external noise,
Poor noise resistance.

The present invention solves this problem. An object of the present invention is to provide a controller device with improved noise resistance.

[0024]

In order to achieve the above object, the present invention provides: (1) a printed circuit board main body, a nest provided on the circuit board main body, and a nest mounted on the nest. A controller including a central processing unit, a first cover made of a shielding material covering one side of the printed circuit board body;
A second cover made of a shielding material covering the other surface side of the printed circuit board body, and a shield provided on one or both of the first cover and the second cover to provide a shielding property of the printed circuit board body; A cover overlapping portion made of an enhanced shielding material, a mounting hole provided in the second cover to which a nest portion is mounted, a nest portion mounted in the mounting hole, and a joint portion of the nest portion with the second cover. And a nest overlapping portion provided on the printed circuit board for improving the shielding property of the printed circuit board body. (2) The controller device according to (1), further including a first cover made of an iron material, a second cover, and a cover overlapping portion. (3) a first cover frame provided on a peripheral portion of the first cover and a second cover frame provided on a peripheral portion of the second cover and overlapping the first cover frame; The controller device according to (1) or (2), further comprising a cover overlapping portion. (4) A cover overlapping portion having the first cover frame portion having a square frame shape and the second cover frame portion having a square frame shape is provided (1) or (2) or (3). The controller device according to (1). (5) A support bar attached from one end to the other end of the first cover or the second cover so as to enhance the strength of the cover (1).
Or the controller device according to (2) or (3) or (4). (6) In order to enhance the shielding performance of the printed circuit board of the CPU central processing unit, the printed circuit board is provided with heat radiation holes provided only in the nest portion in a direction perpendicular to the plate surface. (1)
Or the controller device according to (2) or (3) or (4) or (5). It is what constituted.

[0025]

In the above arrangement, the first cover covers one side of the printed circuit board body. The second cover covers the other surface of the printed circuit board body.

A part of the first cover and a part of the second cover overlap each other to form a cover overlapping part, and the shielding property of the printed circuit board body is enhanced. The nest portion is mounted in a mounting hole provided in the second cover.

In this state, the nest overlapping portion provided at the joint portion of the nest portion with the second cover enhances the shielding performance of the printed circuit board body 41. Hereinafter, a detailed description will be given based on embodiments.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory diagram of a main part of an embodiment of the present invention, and FIG. 2 is a detailed view of a main part of FIG. 1, showing a state where an input / output unit IOU is removed. FIG. 3 is an assembly view of a main part of FIG. 2, and FIGS. 4 and 5 are detailed views of a main part of FIG.

In the figure, the same symbols as in FIG. 6 indicate the same functions. Hereinafter, only differences from FIG. 6 will be described. As shown in FIG. 2, the printed circuit board body 41 has a nest 42 attached thereto.

The central processing unit CPU is inserted and attached to the nest section 42. As shown in FIG. 3, the first cover 43
Is formed of a shielding material covering one surface of the printed circuit board body 41. In this case, it is made of an iron material.

The second cover 44 covers the other surface of the printed circuit board main body 41 and is made of a shielding material. In this case, it is made of an iron material.

The cover overlapping portions 45 is provided in the first cover 43 both or one of the second cover 44, a first
Around the joint between the cover 43 and the second cover 44
The printed circuit board 41 is made of a shielding material which is provided so as to be continuously overlapped with each other. In this case, it is made of an iron material.

In this case, the cover overlapping portion 45 is provided on both the first cover 43 and the second cover 44. The cover overlapping portion 45 includes a first cover frame portion 451 having a rectangular frame shape provided on a peripheral portion of the first cover,
The first cover frame portion 451 is provided on a peripheral portion of the cover.
And a second cover frame portion 452 in the shape of a rectangular frame overlapping with the second cover frame portion 452.

The support bar 46 is attached from one end to the other end of the first cover 43 or the second cover 44 so as to enhance the strength of the cover. In this case, it is attached to the first cover 43.

The mounting hole 47 is provided in the second cover 44, and the nest 42 is mounted. The nest overlapping part 48
The nest portion 42 is provided at a joint portion between the nest portion 42 and the second cover 44, and is provided at a joint portion between the nest portion 42 and the second cover 44.
Are continuously provided over the entire circumference of the printed circuit board, and the shielding property of the printed circuit board body 41 is enhanced.

In this case, as shown by the hatched portions in FIGS. 4 and 5, a nest overlapping portion 48 is provided in the nest portion 42 at the joint portion with the second cover 44. Since the central processing unit CPU having a printed circuit board is inserted into the nest section 42, it is also taken into consideration to secure this shielding property.

The heat radiating holes 49 are provided only in the nest portion 42 in a direction perpendicular to the plate surface of the printed circuit board of the central processing unit CPU in order to enhance the shielding property of the printed circuit board of the central processing unit CPU. Is provided.

In this case, an iron material is used as the shield material. The angle A in FIG. 3 is for attaching the basic unit 2 to the basic unit truck 1.

In the above configuration, as shown in FIG. 3, one ends of a plurality of support rods 46 are attached to the first cover 43. The first cover 43 covers one side of the printed circuit board body 41.

A second cover 44 covers the other side of the printed circuit board body 41. The other ends of the plurality of support bars 46 are attached to the second cover 44.

In this state, the first cover frame 45
The first and second cover frame portions 452 overlap to form a cover overlap portion 45, and the printed circuit board body 4
1 is improved.

Mounting hole 47 provided in second cover 44
The nest 42 is attached to the nest. In this state, the nest overlapping portion 48 provided at the joint portion of the nest portion 42 with the second cover 44 enhances the shielding property of the printed circuit board body 41.

The nest overlapping section 48 includes:
Central processing unit CP having printed circuit board
Since U is inserted, consideration is given to ensuring this shielding property.

As a result, (1) the first cover 43, the second cover 44, the cover overlapping portion 45, the nest portion 42 and the nest overlapping portion 48
Printed circuit board body 41 and central processing unit C
Since the shielding effect of the PU and the housing structure are secured at the same time, a controller device that is inexpensive and has improved noise resistance can be obtained.

(2) Cover overlapping part 45 and nest overlapping part 4
Since the number 8 is provided, the shielding property is enhanced, and a controller device with further improved noise resistance can be obtained.

(3) If the first cover, the second cover, and the cover overlapping portion made of an iron material are used, a shield device can be secured and an inexpensive controller device can be obtained.

(4) If the first cover frame portion and the second cover frame portion overlapping the first cover frame portion are used, the printed circuit board main body 41 is connected to the first cover and the second cover frame. A controller device that can be compactly sandwiched between the cover and the device can be easily reduced in size.

(5) First cover frame portion 45 having a rectangular frame shape
If the cover overlapping portion 45 including the first cover frame portion 452 and the second cover frame portion 452 having a square frame shape is used, since the cover overlap portion 45 is square,
An easy-to-make and inexpensive controller device can be obtained.

(6) If a support rod 46 attached from one end to the other end of the first cover 43 or the second cover 44 is used so as to enhance the strength of the cover,
The first cover 43 and the second cover 44 can be made thin, and an inexpensive controller device can be obtained.

(7) If the heat radiating holes 49 are provided only on the nest portion 42 in the direction perpendicular to the board surface of the printed circuit board of the central processing unit CPU, the central processing unit C
A controller device that can enhance the shielding performance of the printed circuit board of the PU can also be obtained.

[0051]

As described above, according to the first aspect of the present invention,
According to (1) the first cover, the second cover, the cover overlapping portion, and the nest portion and the nest overlapping portion, the shielding effect and the housing structure of the printed circuit board body and the central processing unit can be simultaneously achieved. As a result, a controller device that is inexpensive and has improved noise resistance can be obtained.

(2) Since the cover overlapping portion and the nest overlapping portion are provided, the shielding property is improved, and a controller device with further improved noise resistance can be obtained.

According to the second aspect of the present invention, since the first cover, the second cover, and the cover overlapping portion made of the iron material are used, the shield property is ensured and the controller device is inexpensive. can get.

According to the third aspect of the present invention, since the first cover frame portion and the second cover frame portion overlapping the first cover frame portion are used, the printed circuit board body can be connected to the first cover frame portion. The controller device can be compactly sandwiched between the cover and the second cover, and can be easily reduced in size.

According to the fourth aspect of the present invention, if a cover overlapping portion composed of the first cover frame portion having a square frame shape and the second cover frame portion having a square frame shape is used, the cover portion is rectangular. Therefore, an easy-to-make and inexpensive controller device can be obtained.

According to the fifth aspect of the present invention, the support rod attached from one end to the other end of the first cover or the second cover is used so as to enhance the strength of the cover. The cover and the second cover can be made thin, and an inexpensive controller device can be obtained.

According to the sixth aspect of the present invention, the heat radiation holes are provided only on the nest portion in the perpendicular direction on the board surface of the printed circuit board of the central processing unit. A controller device that can enhance the shielding performance of the circuit board can be obtained.

Therefore, according to the present invention, it is possible to realize a controller device with improved noise resistance.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a main part configuration of an embodiment of the present invention.

FIG. 2 is a detailed view of a main part of FIG. 1;

FIG. 3 is an assembly view of a main part of FIG. 2;

FIG. 4 is a detailed view of a main part of FIG. 3;

FIG. 5 is a detailed view of a main part of FIG. 3;

FIG. 6 is an explanatory diagram of a configuration of a conventional example generally used in the related art.

FIG. 7 is an explanatory view of parts shown in FIG. 6;

FIG. 8 is a plan view of FIG. 7;

FIG. 9 is a side view of FIG. 7;

FIG. 10 is an explanatory view of the parts in FIG. 6;

FIG. 11 is a plan view of FIG. 10;

FIG. 12 is a side view of FIG. 10;

FIG. 13 is an operation explanatory diagram of FIG. 6;

[Explanation of symbols]

 Reference Signs List 1 basic unit rack 2 basic unit 3 input / output expansion rack 4 expansion unit 5 power cable 6 power supply 7 input / output expansion rack power supply cable 8 input / output expansion rack signal cable 9 communication cable 11 socket 12 connector 13 screw hole 14 mounting screw 15 hole 41 printed circuit board main body 42 nest portion 43 first cover 44 second cover 45 cover overlapping portion 451 first cover frame portion 452 second cover frame portion 46 support rod 47 mounting hole 48 nest overlapping portion 49 Heat radiating hole 49 PSU power supply unit CPU central processing unit CPL communication unit IOU input / output unit

Claims (6)

(57) [Claims] And the printed board circuit board body [1 claim], and nested portion provided on the circuit board main body, the controller apparatus comprising a central processing unit mounted inserted in the nest part, printed circuit board made of a single A first cover made of a shielding material covering one surface of the circuit board body; a second cover made of a shielding material covering the other surface of the printed circuit board body; and the first cover and the second cover The first cover and the second cover are provided on both or one of the covers.
A cover overlapping portion made of a shielding material which is provided so as to be continuously overlapped over the entire periphery of the joining portion and which enhances a shielding property of the printed circuit board circuit body; and a nest portion provided on the second cover. An attachment hole to be attached; a nest portion attached to the attachment hole; and a nest portion provided at a joint between the nest portion and the second cover.
All around the joint between the nest and the second cover
And a nest overlapping portion provided continuously and continuously over the entire surface of the printed circuit board to enhance a shielding property of the printed circuit board body. 2. The apparatus according to claim 1, further comprising a first cover, a second cover, and a cover overlapping portion made of an iron material.
A controller device as described. 3. A first cover frame provided on a peripheral edge of the first cover and a second cover frame provided on a peripheral edge of the second cover and overlapping the first cover frame. The controller device according to claim 1, further comprising a cover overlapping portion having: 4. The apparatus according to claim 1, further comprising a cover overlapping portion having said first cover frame portion having a square frame shape and said second cover frame portion having a square frame shape. The controller device according to claim 3. 5. The first cover so as to enhance the strength of the cover.
5. The controller device according to claim 1, further comprising a support rod attached from one end to the other end of the cover or the second cover. 6. 6. The printed circuit board of the central processing unit is provided with a heat radiating hole provided only in the nest portion in a direction perpendicular to the plate surface of the printed circuit board in order to enhance the shielding property. Claim 1 or Claim 2 or Claim 3 or Claim 4 or Claim 5
A controller device as described.