JP2012033629A - Electronic circuit board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic circuit board that can reduce man hours when electronic components are mounted on the electronic circuit board by inserting pins.SOLUTION: An electronic circuit board 1, on which electronic components 10 are mounted by inserting pins therein, includes a land part 2 to which solder 2a is applied, a slid-type mounting hole 3 whose one end is provided in the land part 2, and an opening part 4 which continuously opens to the other end of the mounting hole 3 and which is widen to the mounting hole 3.

Description

  The present invention relates to an electronic circuit board on which electronic components are mounted by pin insertion.

  A conventional electronic circuit board is disclosed in Patent Document 1. In this electronic circuit board, circular mounting holes for inserting a plurality of pins provided in an electronic component such as an IC are arranged in a line. The soldering surface of the electronic circuit board is provided with a land portion made of a conductor pattern around the mounting hole.

  The electronic circuit board is generally inserted into the mounting hole from the surface opposite to the soldering surface by a chip mounter or the like, transported to the DIP tank, and the land portion is immersed therein. Thereby, solder is applied to the land portion, and electronic components are pin-mounted on the electronic circuit board by solidification of the solder.

  Further, when the operator manually mounts the electronic component, solder is applied to the land portion of the electronic circuit board by immersion in a solder bath or the like. Thereafter, the pins of the electronic component are inserted into the mounting holes, and the pins are soldered by the solder of the land portion, and the electronic component is inserted and mounted.

Japanese Patent Laying-Open No. 2005-31146 (pages 4 to 6, FIG. 1)

  However, according to the above-described conventional electronic circuit board, since the pins of the electronic component are soldered by the solder of the land portion around the mounting hole when the electronic component is manually mounted, the gap between the mounting hole and the pin is formed small. For this reason, there is a possibility that the pin may be bent when the pin is inserted into the mounting hole, and there is a problem that man-hours are increased because careful work is required to avoid breakage of the pin. In particular, when inserting a plurality of pins into a plurality of mounting holes arranged in a line, it is necessary to perform the operation more carefully.

  An object of this invention is to provide the electronic circuit board which can reduce the man-hour at the time of pin insertion mounting of an electronic component.

  In order to achieve the above object, the present invention provides an electronic circuit board on which an electronic component is inserted by pin insertion, a land portion to which solder is applied, a slit-shaped mounting hole having one end arranged in the land portion, and the mounting An opening that is continuously open at the other end of the hole and is widened with respect to the mounting hole is provided.

  According to this configuration, the solder is applied to the land portion when the electronic component is manually mounted. Next, a pin provided in the electronic component is inserted into the wide opening, and the electronic component is slid to place the pin at one end of the slit-shaped mounting hole. Next, the pins are soldered by the solder of the land portion, and the electronic component is inserted and mounted on the electronic circuit board.

  According to the present invention, in the electronic circuit board configured as described above, the plurality of land portions and the mounting holes are arranged side by side in one direction, and the plurality of mounting holes are formed by the one opening formed in a long hole shape. It is characterized by being connected. According to this configuration, a plurality of slit-shaped mounting holes are extended from the elongated hole-shaped opening in the electronic circuit board. A plurality of pins arranged in a row provided in the electronic component are inserted into the elongated hole-shaped opening, and each pin is arranged at one end of the slit-shaped mounting hole by sliding the electronic component.

  According to the present invention, in the electronic circuit board configured as described above, a plurality of the land portions, the mounting holes, and the opening portions are arranged in one direction. According to this configuration, a plurality of pins arranged in a row provided in the electronic component are respectively inserted into the plurality of openings, and each pin is arranged at one end of the slit-shaped mounting hole by sliding the electronic component.

  According to the present invention, in the electronic circuit board configured as described above, the opening has an inclined surface extending from the mounting hole.

  According to the present invention, since it has an opening that is continuous with the slit-shaped mounting hole and is widened with respect to the mounting hole, the mounting hole is formed by inserting a pin provided in the electronic component into the opening and sliding the electronic component. Soldering can be performed by placing a pin at the end of the wire. Therefore, the pins can be easily inserted into the mounting holes, and the man-hours required for inserting and mounting the pins of the electronic component can be reduced.

Side surface sectional drawing which shows the electronic circuit board of 1st Embodiment of this invention. The top view which shows the soldering surface of the electronic circuit board of 1st Embodiment of this invention. Side surface sectional drawing which shows the state at the time of mounting the electronic component of the electronic circuit board of 1st Embodiment of this invention. Side surface sectional drawing which shows the state at the time of mounting the electronic component of the electronic circuit board of 1st Embodiment of this invention. The top view which shows the soldering surface of the electronic circuit board of 2nd Embodiment of this invention

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side cross-sectional view showing a state where electronic components of the electronic circuit board of the first embodiment are mounted. FIG. 2 is a plan view seen from the soldering surface of the electronic circuit board. On one surface of the electronic circuit board 1, a plurality of land portions 2 made of a conductor pattern are arranged in a line. The land 2 is coated with solder 2a as will be described later.

  The electronic circuit board 1 is formed with a plurality of slit-shaped mounting holes 3 and long hole-shaped openings 4 connecting the mounting holes 3 therethrough. One end of the mounting hole 3 is disposed in each land portion 2, and the other end of the mounting hole 3 is connected to the opening 4. Accordingly, the opening 4 is widened in the parallel arrangement direction with respect to the slit-shaped mounting hole 3, and a plurality of mounting holes 3 are extended from the opening 4. The opening 4 is provided with an inclined surface 4 a extending from the mounting hole 3. The opening 4 is gradually widened with respect to each mounting hole 3 by the inclined surface 4a.

  An electronic component 10 having a plurality of pins 10a is mounted on the electronic circuit board 1 by pin insertion. 1 and 2, an LCD 11 is provided as an example of the electronic component 10. The LCD 11 is held by the LCD holder 12, and a plurality of pins 10a arranged in a line formed by a lead frame or the like are led out. The pin 10 a is disposed at one end of each mounting hole 3 and is soldered by the solder 2 a applied to the land portion 2.

  When the operator manually mounts the electronic component 10, the solder 2 a is applied to the land portion 2 of the electronic circuit board 1 by dipping in a solder bath or the like. Next, as shown in FIG. 3, the pin 10 a provided on the electronic component 10 is inserted into the wide opening 4. Next, as shown in FIG. 4, the electronic component 10 is slid, and the pin 10a is guided to the slit-shaped mounting hole 3 through the inclined surface 4a. Thereby, the pin 10 a is arranged at one end in the land portion 2 of the mounting hole 3.

  Next, the pin 10 a is soldered by the solder 2 a of the land portion 2. At this time, the electronic component 10 may be urged in the direction from the opening 4 toward the mounting hole 3. As a result, the electronic component 10 is pin-mounted on the electronic circuit board 1 as shown in FIG.

  According to the present embodiment, since the opening portion 4 that is continuous with the slit-like mounting hole 3 and is widened with respect to the mounting hole 3 is provided, the pin 10a provided in the electronic component 10 is inserted into the opening portion 4, and the electronic component By sliding 10, the pin 10 a can be disposed at the end of the mounting hole 3 for soldering. Therefore, the pin 10a can be easily inserted into the mounting hole 3, and the man-hour at the time of pin insertion mounting of the electronic component 10 can be reduced.

  In addition, since the slit-shaped mounting hole 3 having one end arranged in the land portion 2 extends outward from the land portion 2, the solder hole 2a is prevented from being blocked by the solder 2a when the solder 2a is applied to the land portion 2. be able to. Thereby, the pin 10a can be easily arranged in the mounting hole 3. The mounting hole 3 may be disposed in the land portion 2 and the opening 4 may be formed to extend outward from the land portion 2.

  In addition, since the plurality of mounting holes 3 are connected by the one opening 4 formed in the shape of a long hole, the plurality of pins 10 a arranged in a row can be easily inserted into the opening 4 and guided to the mounting hole 3.

  Further, since the opening 4 has the inclined surface 4 a extending from the mounting hole 3, the pin 10 a inserted into the opening 4 can be easily guided to the slit-shaped mounting hole 3. Although the inclined surface 4a extends from two opposing surfaces of the mounting hole 3, the inclined surface 4a may be formed by extending only from one surface.

  Next, FIG. 5 is a plan view showing a soldering surface of the electronic circuit board of the second embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. In the present embodiment, a plurality of openings 4 are provided corresponding to the mounting holes 3. Other parts are the same as those in the first embodiment.

  The electronic circuit board 1 has a plurality of openings 4 arranged in a line. Each opening 4 is connected to a plurality of slit-shaped mounting holes 3 and is widened in the juxtaposition direction with respect to the slit-shaped mounting holes 3. The opening 4 is provided with an inclined surface 4 a extending from the mounting hole 3. The opening 4 is gradually widened with respect to the mounting hole 3 by the inclined surface 4a.

  When the operator manually mounts the electronic component 10, the pins 10 a provided on the electronic component 10 are inserted into the wide opening portions 4 as in FIG. 3 described above. Next, as in FIG. 4 described above, the electronic component 10 is slid, the pin 10a is guided to the slit-shaped mounting hole 3 through the inclined surface 4a, and the pin 10a is disposed at one end of the mounting hole 3. Then, the pin 10a is soldered.

  According to the present embodiment, as in the first embodiment, since the opening portion 4 that is continuous with the slit-shaped mounting hole 3 and is widened with respect to the mounting hole 3 is provided, the pin 10a provided in the electronic component 10 is opened. By inserting into the part 4 and sliding the electronic component 10, the pin 10 a can be disposed at the end of the mounting hole 3 for soldering. Therefore, the man-hour at the time of pin insertion mounting of the electronic component 10 can be reduced.

  Further, since the plurality of lands 2, the mounting holes 3 and the openings 4 are arranged in one direction, the plurality of pins 10a arranged in a row can be easily inserted into the openings 4 and guided to the mounting holes 3. . Moreover, since the opening area of the opening part 4 is small compared with 1st Embodiment, the intensity | strength of the electronic circuit board 1 can be improved.

  In the present embodiment, the electronic component 10 has a plurality of pins 10a. However, even if a set of land portions 2, mounting holes 3, and openings 4 are provided for the electronic component 10 having one pin 10a. Good.

  In the first and second embodiments, the pin 10 a is provided along one side of the electronic component 10, but the pin 10 a may be provided along two opposite sides of the electronic component 10. At this time, by forming the mounting hole 3 and the opening 4 in the same direction from the land portions 2 corresponding to the two opposite sides, the man-hours for pin insertion mounting can be reduced as described above.

  According to the present invention, the electronic component can be used for an electronic circuit board on which a pin is inserted and mounted.

DESCRIPTION OF SYMBOLS 1 Electronic circuit board 2 Land part 2a Solder 3 Mounting hole 4 Opening part 10 Electronic component 10a Pin 11 LCD
12 LCD holder

Claims (4)

  In an electronic circuit board for inserting and mounting electronic components, a land portion to which solder is applied, a slit-shaped mounting hole having one end arranged in the land portion, and a continuous opening at the other end of the mounting hole An electronic circuit board comprising an opening widened with respect to the mounting hole.   The plurality of land portions and the mounting holes are juxtaposed in one direction, respectively, and the plurality of mounting holes are connected by the one opening portion formed in a long hole shape. Electronic circuit board.   The electronic circuit board according to claim 1, wherein a plurality of the land portions, the mounting holes, and the opening portions are arranged in one direction.   The electronic circuit board according to claim 1, wherein the opening has an inclined surface extending from the mounting hole.

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