JP4289952B2 - Electronic equipment unit - Google Patents

Description

  The present invention relates to an electronic device unit including a printed circuit board.

  Conventionally, most electronic device units (or electronic devices) are configured to store large electronic parts such as printed circuit boards and transformers in device cases that are the appearance of the product, but the finished product has a product name, product number, Lot No. Product labeling such as date of manufacture shall be made. Such product display is also performed on a printed circuit board for manufacturing control and quality control (see, for example, Patent Document 1).

  For example, as shown in FIG. 5, the CATV die-cast amplifier 101 includes an amplifier case 104 in which a first casing 102 and a second casing 103 are coupled so as to be openable and closable, and various electronic components are included in the amplifier case 104. Is stored. Specifically, a circuit unit 105 is accommodated in a first casing 102 attached to the messenger wire S, and an adjustment unit 106 (for example, an attenuator unit, a BON unit, an equalizer unit) as an electronic device unit is stored in the circuit unit 105. It comes to be installed.

  As shown in FIGS. 6 and 7, the circuit unit 105 includes a box-shaped casing 110 attached by a rotating frame 109 so that the bottom chassis 107 and the lid chassis 108 are spaced apart from each other. A printed circuit board 111 is attached and fixed between the chassis 107 and 108 in the casing 110. Then, the board receiving connector 112 is attached to the printed circuit board 111, and the unit connector 106a of the adjustment unit 106 is inserted (inserted) through the opening 108a of the lid chassis 108, whereby the unit connector 106a is connected to the board receiving connector 112. It is electrically connected so as to be detachable.

  By the way, since the adjustment of the adjustment unit 106 described above is performed while replacing the unit at the site where the die casting amplifier 101 is installed, a large number of units whose gains are adjusted to different values must be prepared. Don't be. When the three types of the attenuator unit, the BON unit, and the equalizer unit are combined, there are cases where the type is over 150 types. Of course, the adjustment value must be clearly displayed so that the user can know the adjustment value. Moreover, the shipment quantity is generally small.

  Such an adjustment unit is the most typical low-volume, multi-product product, and it is conceivable to share parts such as a unit case and a printed circuit board for cost reduction. If such a commonality is achieved, a completely different component is caused by a slight difference in components on the printed circuit board. In other words, it is a product that is prone to errors during assembly as a product.

In order to avoid such an assembly error, conventionally, not only the product display as described above is provided on the printed board, but also the product display is provided on the outer surface of the case for housing the product display.
Utility Model Registration No. 2512687 (paragraph numbers 0008 to 0010)

  In this way, since the display part is given to both the printed circuit board and its case, two or more display processes are required to produce one product, and the cost for display cannot be ignored. It is in.

  The inventor devised the position where the display unit is provided on the printed circuit board and the shape of the case so that the display unit applied to the printed circuit board is outside the case while the printed circuit board (electric circuit unit) is housed in the case. If it is made visible from the viewpoint, the product display on the case side can be omitted, and the present invention has been made based on the idea that the cost can be reduced.

  The invention of claim 1 includes a printed circuit board and a device case for housing the printed circuit board, and a printed circuit board is printed with a display section for specifying the electric circuit section together with an electric circuit section using printed wiring. An electronic device unit, wherein the electrical circuit unit is located inside the device case and the display unit is located outside the device case in a state where the printed circuit board is housed in the device case. . Here, the “display section” means the product name, product number, lot number. Means a part where information for identifying an electronic device unit is displayed, such as a manufacturing date.

  In this way, since the electrical circuit portion of the printed circuit board is located inside the device case and the display portion is located outside the device case, by visually observing the display portion located outside the case, Even if such a display unit is not provided on the outer surface of the device case, it is possible to immediately identify the electronic device unit used for what purpose.

  Therefore, since only the display part is provided on the printed circuit board, the combination of the printed circuit board and the device case can be combined at the time of assembly without incurring cost increase (no need to provide the display part on both the printed circuit board and the case). Manufacturing mistakes such as mistakes are reliably avoided.

  In addition, the display part of the printed circuit board is located outside the device case and is provided in a part that does not affect the performance and function of the printed circuit board. An insertion operation for attachment to another electronic device unit can be performed. Therefore, assembly work is facilitated.

  According to a second aspect of the present invention, a board connecting connector portion that is connectable to a receiving connector of another electronic device unit is provided in a portion of the device case that is different from the side where the display portion is located. It is desirable that the display unit be visible from the outside of the other electronic device unit in a state where the board connecting connector portion is connected to the receiving connector of the other electronic device unit.

  In this way, the display unit can be clearly seen not only in a state before being attached to another electronic device unit but also in a state after being attached, so what function the electronic device unit has. You can easily confirm whether it is a product that demonstrates it.

The inventions of claims 1 and 2 are mainly used for small electronic device units .

  Since it comprised as mentioned above, since this invention becomes unnecessary to provide a display part in an apparatus case, when assembling, the malfunction that the display content of the display part of an apparatus case and a printed circuit board differs is eliminated.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIGS. 1A and 1B are a perspective view and an exploded perspective view of an adjustment unit (for example, an attenuator unit, a BON unit, an equalizer unit) according to the present invention used for a CATV die-cast amplifier, and FIG. It is sectional drawing which shows a state.

  As shown in FIGS. 1A and 1B, the adjustment unit 1 that is an electronic device unit is detachably attached to the circuit unit 105 (other electric device unit) of the above-described CATV die-cast amplifier 101. A printed circuit board 2 and a unit case 3 (equipment case) for housing the printed circuit board 2 are provided. For the attenuator unit, BON unit, and equalizer unit that are the adjustment unit 1, the unit case 3 is a common component, and the printed circuit board 2 is also shared as much as possible to reduce the cost. These three types of units each have a gain and a tilt of the die casting amplifier 101 to correct the high frequency signal transmitted by the length of the cable connecting between the die casting amplifiers 101 and branching / distributing in the middle of the cable. , Used to adjust the frequency characteristics (F characteristics).

  The printed circuit board 2 is silk-printed with a product display section 2A for specifying the printed circuit board 2 (electric circuit section 2B) simultaneously with the electric circuit section 2B (printed wiring) of the printed circuit board 2, and the product display section 2A is a unit case. 3 is located outside. This eliminates the need for a special process for printing the product display portion 2A, and can be performed together with silk printing of the printed wiring of the printed circuit board 2.

  The unit case 3 has an upper case 3A and a lower case 3B. An engaging claw 3c is formed on the upper case 3A, and an engaging recess 3d is formed on the lower case 3B so that the engaging claw 3c is detachably engaged. The unit case 3 is provided with respect to the printed circuit board 2 so as to cover the electric circuit portion 2B of the printed circuit board 2 (that is, accommodated in the case). In this state, the engaging claw portion 3c is detachably engaged with the engaging recess 3d, the electric circuit portion 2B is located inside the unit case 3, and the product display portion 2A is located outside the unit case 3. .

  The lower case 3B is formed with pins 3a for positioning the printed circuit board 2, and the upper case 3A is formed with a notch 3b for protruding a part of the printed circuit board 2. On the opposite side of the electric circuit portion 2B from the product display portion 2A protruding to the outside of the printed circuit board 2, a substrate connecting connector portion 2C from which a plurality of connection pins 2a protrude is provided.

  Then, the connector portion 2C of the adjustment unit 1 is inserted (inserted) through the opening 108a of the lid chassis 108 (circuit unit 105), so that the connector portion 2C can be detached from the board receiving connector 112 of the printed board 111. Connected. The unit case 3 (upper case 3A) has a protrusion 3e for positioning when inserted into the opening 108a.

  Therefore, even after the adjustment unit 1 is attached to the circuit unit 105, the product display portion 2A can be visually observed, so that the adjustment unit 1 is a product that performs any function regardless of before and after the attachment. Can be easily confirmed (recognized).

  In addition, since all the display is performed on the printed circuit board 2 and the product display portion 2A is positioned outside the unit case 3 and no display is performed on the unit case 3, an error in the combination of the unit case 3 and the printed circuit board 2 itself. Disappears. Therefore, it is possible to omit the step of confirming whether an error has occurred. As a result, not only the display cost but also the cost necessary for production management can be reduced.

The unit case 3 (equipment case) is provided with the connector part 2C for connecting the board on the side opposite to the side where the product display part 2A is present. If the connection of the connector part 2C is not affected, the unit case 3 (equipment case) can be provided in a part different from the side where the display part 2A is located.
(Second Embodiment)
FIGS. 3A and 3B are perspective views showing the appearance of a large electronic device unit (booster power supply device) according to the present invention, and FIG. 4 is an exploded perspective view thereof.

  As shown in FIGS. 3 and 4, the booster power supply device 11 which is an electronic device unit is configured such that the entire printed circuit board 13 is accommodated in an apparatus case 12 (equipment case) composed of an upper case 12A and a lower case 12B. It is said that.

  A display surface 12Aa on which a company name brand mark and a product name are displayed is formed on the upper surface of the upper case 12A, and the switch button 20 is provided so as to be able to appear and retract (can be turned on / off).

  On the lower surface side of the printed circuit board 13 (the lower side in the installed state), the product number, lot number. The product display section 13A such as the date of manufacture is silk-printed. The product display portion 13A is silk-printed together with the print pattern (electric circuit portion). A rectangular window portion 12Ba is opened at a position corresponding to the product display portion 13A of the lower case 12B, and the display content of the product display portion 13A can be easily viewed through the window portion 12Ba.

  Rubber legs 14 are provided at the four corners of the lower case 12B, and a fitting claw portion 15 is formed at the peripheral edge, and the device case 12 is configured by being fitted to the upper case 12A.

  The power supply cable 16 is connected to the printed circuit board 13 through the notch 12Aa of the upper case 12A, and the input cable 17 and the output cable 18 are connected through the fixture 19.

Since this booster power supply device 11 is a product used indoors, a company name logo mark, a product name, etc. that require designability are displayed on the upper case 12A by printing. Product number that does not require designability, lot number. The product display section 13A such as the date of manufacture is printed on the printed circuit board 13 together with the print pattern (electric circuit section), and the display section 13A provided on the printed circuit board 13 appears on the appearance. window 12 Ba is provided in the casing 12, or looked unnecessary portions, so that no touching finger live parts, the periphery of the window portion 12 Ba wall is provided.

  Needless to say, the display part of the printed circuit board on which the product number is displayed is devised on the printed pattern of the printed circuit board so that there is no risk of electric shock even if a finger touches it.

  The product display unit printed on the printed circuit board includes not only a display necessary for a product but also a part thereof.

(A) is a perspective view of an electronic device unit (for example, an attenuator unit, a BON unit, an equalizer unit) according to the present invention used in a CATV die-cast amplifier, and (b) is an exploded perspective view thereof. It is sectional drawing which shows the mounting state of an adjustment unit, and is a figure similar to FIG. (A) is the perspective view from the bottom face side of the electronic device unit of 2nd Embodiment, (b) is the perspective view from the upper surface side of the unit. It is the same exploded perspective view. It is a perspective view of the state which opened the cover body of the conventional die casting amplifier for CATV. It is explanatory drawing which shows a part of conventional die casting amplifier for CATV. It is sectional drawing in the AA of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Adjustment unit 2 Printed circuit board 2A Product display part 2B Electrical circuit part 2C Connector part for board connection 3 Unit case (equipment case)
11 Booster power supply device 12 Device case (equipment case)
12A Upper case 12B Lower case 12Ba Window part 13 Printed circuit board 13A Product display part 101 Die-cast amplifier for CATV 105 Circuit unit (other electronic equipment unit)
111 Printed circuit board 112 Board receiving connector

Claims (2)

An electronic device unit comprising a printed circuit board and a device case for storing the printed circuit board, and on the printed circuit board, together with an electric circuit unit by printed wiring, a display unit for specifying the electric circuit unit is printed,
An electronic device unit, wherein the electric circuit unit is located inside the device case and the display unit is located outside the device case in a state where the printed circuit board is housed in the device case. A board connecting connector portion that is connectable to a receiving connector of another electronic device unit is provided in a portion different from the side where the display portion is located of the device case,
The electronic device unit according to claim 1, wherein the display unit is visible from the outside of the other electronic device unit in a state in which the board connecting connector portion is connected to a receiving connector of the other electronic device unit.

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